Carrier 48Tj016 028 Users Manual

CARRIER Package Units(both units combined) Manual L0606341 CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides

2015-01-24

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48TJ016-028

Single-Package Rooftop Units

Electric Cooling/Gas Heating

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS ...................... l

INSTALLATION ................................ 2-31

Step 1 -- Provide Unit Support ................... 2

• ROOF CURB

• ALTERNATE UNIT SUPPORT

Step 2 -- Rig and Place Unit ..................... 2

• POSITIONING

• ROOF MOUNT

Step 3-- Field Fabricate Ductwork ............... 9

Step 4 -- Make Unit Duct Connections ........... 9

Step 5 -- Install Flue Hood and Wind Baffle ...... 9

Step 6 -- Trap Condensate Drain ................. 9

Step 7 -- Orifice Change ........................ 10

Step 8 -- Install Gas Piping ..................... 11

Step 9 -- Make Electrical Connections .......... 11

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

• OPTIONAL NON-FUSED DISCONNECT

• OPTIONAL CONVENIENCE OUTLET

Step 10 -- Make Outdoor-Air Inlet Adjustments.. 14

Step 11 -- Install Outdoor-Air Hood ............. 14

Step 12- Install All Accessories ............... 15

• MOTORMASTER® I CONTROL INSTALLATION

• MOTORMASTER V CONTROL INSTALLATION

Step 13- Adjust Factory-Installed Options ..... 17

• PREMIERLINK TM CONTROL

• ENTHALPY SWITCH/RECEIVER

• OUTDOOR ENTHALPY CONTROL

• DIFFERENTIALENTHALPY CONTROL

• ENTHALPY SENSORS AND CONTROL

• OPTIONAL ECONOMI$ERIV AND

ECONOMI$ER2

• ECONOMI$ERIV STANDARD SENSORS

• ECONOMI$ERIV CONTROL MODES

Step 14 -- Install Humidistat for

Optional MoistureMi$er TM Package ............ 29

START-UP .................................... 31-38

SERVICE ..................................... 39-47

TROUBLESHOOTING ......................... 48-52

INDEX ........................................... 53

START-UP CHECKLIST ........................ CL-I

SAFETY CONSIDERATIONS

Installation and selwicing of air-conditioning equipment can

be hazardous due to system pressure and electric_d compo-

nents. Only trained and qualified service personnel should in-

stall, repaiL or service ai>conditioning equipment.

Untrained personnel can perform basic maintenance func-

tions of cleaning coils and filters and replacing filters. All other

operations should be performed by trained service personnel.

When working on ai>conditioning equipment, observe

precautions in the literature, tags and labels attached to the unit,

and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations. Have

fire extinguishers available for all brazing operations.

Before perforlning service or maintenance operations on

unit, turn off main power switch to unit. Electrical shock

could cause personal injury.

1. Improper inst_dlation, adjustment, alteration, service,

or maintenance can cause property &image, personal

injury, or loss of life. Refer to the User's Information

Manual provided with this unit for more details.

2. Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any other

appliance.

What to do if you smell gas:

I. DO NOT Uyto light any appliance.

2. DO NOT touch any electrical switch, or use any

phone in your building.

3. IMMEDIATELY call your gas supplier from a neigh-

bor's phone. Follow the gas supplier's instructions.

4. If you cannot reach your gas supplier, czfll the fire

department.

Disconnect gas piping hom unit when pressure testing at

pressure greater than 0.5 psig. Pressures greater than

0.5 psig will cause gas valve damage resulting in haz_udous

condition. If gas valve is subjected to pressure greater than

0.5 psig, it must be replaced before use. When pressure

testing field-supplied gas piping at pressures of 0.5 psig or

less, a unit connected to such piping must be isolated by

closing the manual gas valve(s).

IMPORTANT: Units have high ambient operating lim- ]

its. If limits are exceeded, the units will automatically I

lock the compressor out of operation. Manu_d reset will

be required to restgu-tthe compressor.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53480009-01 Printed in U,S.A, Form 48TJ-22SI Pg 1 3-06 Replaces: 48TJ-21SI

INSTALLATION

Inspect unit for transportation dmnage. If &_mage is found,

file claim with transportation agency.

Step 1 -- Provide Unit Support

ROOF CURB -- Assemble and install accessory roof curb or

horizont_d a&tpter roof curb in accordance with instructions

shipped with this accessory. See Fig. 1 and 2. Install insulation,

cant strips, roofing, and counter flashing as shown. Ductwork

can be installed to roof curb or horizontal adapter roof curb be-

fore unit is set in place. Curb or a&tpter roof curb should be

level. This is necessary to permit unit drain to function proper-

ly. Unit leveling tolerance is + l/l(_ in. per linear fl in any direc-

tion. Refer to Accessory Roof Curb or Horizontal A&_pter

Roof Curb Installation Instructions for additional information

as required. When accessory roof curb or horizontal adapter

roof curb is used, unit may be installed on class A, B, or C roof

covering material.

IMPORTANT: The gasketing of the unit to the roof curb

or adapter roof curb is critical for a watertight se_d.

Inst_fll gasket with the roof curb or adapter as shown in

Fig. 2. Improperly applied gasket can _dso result in air

leaks and poor unit performance.

ALTERNATE UNIT SUPPORT -- When the curb or adapter

cannot be used, install unit on a noncombustible surface. Sup-

port unit with sleepers, using unit curb support area. If sleepers

cannot be used, support long sides of unit with a minimum of 3

equally spaced 4-in. x 4-in. pads on each side.

Step 2 -- Rig and Place Unit -- Do not diop unit;

keep upright. Use spreader bras over unit to prevent sling or

cable &image. Rollers may be used to move unit across a roof.

Level by using unit frame as a refelence; leveling tolerance is

_+1/1_in. per linear fl in any direction. See Fig. 3 for additiomfl

information. Unit operating weight is shown in Table 1.

Four lifting holes are provided in ends of unit base rails as

shown in Fig. 3. Refer to rigging instructions on unit.

POSITIONING- Maintain clearance, per Fig. 4 and 5,

around and above unit to provide minimum distance from

combustible materials, proper airflow, and service access.

Do not install unit in an indoor location. Do not locate unit

air inlets near exhaust vents or other sources of contmninated

all: For proper unit operation, adequate combustion and venti-

lation air must be provided in accordance with Section 5.3 (Air

for Combustion and Ventilation) of the National Fuel Gas

Code, ANSI Z223.1 (American National Stan&_rds Institute).

Although unit is weatherproof, guard against water from

higher level runoff and overhangs.

Ix)cate mechanical diaft system flue assembly at least 4 ft

from any opening through which combustion products could

enter the building, and at least 4 ft from any adjacent building.

When unit is located adjacent to public walkways, flue assem-

bly must be at least 7 ft above grade.

ROOF MOUNT-- Check building codes for weight distri-

bution requirements. Unit operating weight is shown in

Table 1.

hlstructions continued on page 9.

14-3/4_

NOTE: CRRFCURB013A00 is a fully factory preassembled hori-

zontal adapter and includes an insulated transition duct. The pres-

sure drop through the adapter curb is negligible.

For horizontal return applications: The power exhaust and baro-

metric relief dampers must be installed in the return air duct.

25% VENT AIR//

ECONOMIZER

HOOD

BLOCK-OFFJ___ i

PAN

A,R

OUT

HORIZONTALSUPPLY/

CURB (CRRFCURB013A00)

TRANSITION DUCT

FULLY INSULATED

SUPPLY PLENUM

1 1/2 # DENSITY,

STICK PINNED & GLUED

12" WIDE STANDING--

SEAM PANELS

ACCESSORY CURB

PACKAGE NO. HEIGHT

1'-11"

CRRFCURB013A00 (584

DESCRIPTION

Pre-Assembled, Roof Curb,

Horizontal Adapter

Fig. 1 -- Horizontal Supply/Return Adapter Installation

CURB

PKG. NO. REF. HEIGHT

CRRFCURBOIOAO0 1"- 2" (305)

CRRFCURBO11AO0 2'- 0" (610)

CRRFCURBO12AO0 2'- 0" (610)

DESCRIPTION

Standard Curb 14" High

Standard Curb for Units Requiring High Installation

Side Supply and Return Curb for High Installation

S'-I0 I/2" =I PLAN VIEW OF ROOF CURB

--OUTLINEGPUN,T

iBOHPRi5UPPL

IBECT. OPENING

CURB

G' 2 3/1S _

(1SSS)

(REF SUPPLY OPENING)

NO-E5_

1, ROOF CURB ACCESSORY IS SHIPPED DISASSEMBLED.

2. IN5ULATED PANEL5_ 1_ THICK NEOPRENE COATED I-I/2 LS DENSITY

3. DIMEN51ON5 iN ( ) ARE IN MILLIMETER5,

4. I:zZ_>DIRECTiON OF AIR FLOW

5, ROOFCURB= IS GA_ (VAO3-SS) 5TL,

6. A 90 DEGREE ELBOW MUST BE INBTALLEO ON THE SUPPLY DUCT

WORK BELOW THE UNIT DIgCHARGE FOR UNITS EQUIPPED WITH

ELECTRIC HEATERS.

NOTE_

TO PREVENT THE HAZARD OF STAGNANT WATER

BUILD-UP IN THE DRAIN PAN OF THE INDOOR

SECTION, UNIT CAN ONL V BE PITCHED AS SHOWN.

5'-9" i AND 1

(1753) 1 = CSMPRES50R

ENSi

)R CONDENSER I

KEEP THIS AREA CLEAR FOR AND i

COMPRESSOR J B_L

POWER (GAS ENTRY FOR GAS FIR D ROOFTOPS) END

_-o-s 3/s"

(132)

ATTACH DUCT TO ROOF CURB

DIMEN51ON5 (degPees ond ir/chetO

(310) (578)

UNIT LEVELING TOLERANCES

_Fro_ edge OF uniL to horizonLaL,

(Sl)

NOM, 514" X

(S2) X (102)

TYP. 4PLCS

O' 1

(44)

5'-7 1116"

(1703A

O'-S

I"-6 _ ,

_*_q(14s7 _0"_2 I/2 (CRRFCURSOI2AO0 ONLY)

(CRRFCURBOI2AO0 ONLY) (64)

HEIGHT

FROM TABLE

(75)

////_ _NAIL

GASKET _ j

COUNTER FLASHING

(FIELD SUPPLIED)

ROOFING FELT

DUCT (FIELD SUPPLIED)

(FIELD SUPPLIED) CANT 5TRP

(FIELD SUPPLIED)

ROOFING MATERIAL

(FIELD SUPPLIED)

UNIT OPENINGS

(421) (FIELD SUPPLIED)

RETURN _

i_ OPTIONAL

SUPPLY AIR RETUR AIR =SIDE SUPPLY

SECTION A-A

Fig. 2 -- Roof Curb Details

I0'-0"

(3048)

,SPREADERBARS "DETAIL A"

_ _RIGGINGHOOK

3'-7 112"

(t t 05)

UNIT BASE RAIL

SEE

"DETAIL A'

NOTES:

1. Dimensions in ( ) are in millimeters.

2. Refer to Fig. 4 and 5 for unit operating weights.

3. Remove boards at ends of unit and runners prior to rigging,

4. Rig by inserting hooks into unit base rails as shown. Use corner post from packaging to protect coil from

damage, Use bumper boards for spreader bars on all units.

5. Weights do not include optional economizer, Add 90 Ib (41 kg) for economizer weight,

6. Weights given are for aluminum evaporator and condenser coil plate fins.

All panels must be in place when rigging.

UNIT

48TJ

016

020

024

028

MAXIMUM

SHIPPING WEIGHT

Ib kg

1775 805

1875 850

1985 900

2135 988

DIMENSIONS

A B

R-in. mm Ft-in. mm

6-111_ 2121 3-5 1041

6-111_ 2121 3-3 991

6-111_ 2121 3-2 985

Fig. 3 -- Rigging Details

STD UNIT ECONOMIZER CORNER CORNER CORNER CORNER

UNIT WEIGHT WEIGHT A B C D

Ib kg Ib kg Ib kg Ib kg Ib kg Ib kg

48TJD,

TJF016 1650 748 90 41 423 192 386 175 403 183 438 199

48TJD,

TJF020 1800 816 90 41 432 196 410 186 461 209 472 214

DIM A DIM B DIM C

ft-in, mm if-in, mm ft-in, mm

3-5 1041 3-5 1041 1-10 559

3-3 991 3-7 1092 1-8 508

NOTES:

1. Refer to print for roof curb accessory dimensions.

2. Dimensions in ( ) are in millimeters.

3. _ Center of Gravity.

4. E_ Direction of airflow.

5. Ductwork to be attached to accessory roof curb only.

6. Minimum clearance:

• Rear: T-O" (2134) for coil removal. This dimension can be reduced to

4'-0" (1219) if conditions permit coil removal from the top.

• 4'-0" (1219) to combustible surfaces, all four sides (includes between

units).

• Left side: 4'-0" (1219) for proper condenser coil airflow.

• Front: 4'-0" (1219) for control box access.

• Right side: 4'-0" (1219) for proper operation of damper and power

exhaust if so equipped.

• Top: 6'-0" (1829) to assure proper condenser fan operation.

• Bottom: 14" (356) to combustible surfaces (when not using curb).

• Control box side: 3'-0" (914) to ungrounded surfaces, non-combustible.

• Control box side: 3"-6" (1067) to block or concrete walls, or other

grounded surfaces.

• Local codes or jurisdiction may prevail.

7. With the exception of clearance for the condenser coil and the damper/

power exhaust as stated in Note #6, a removable fence or barricade

requires no clearance.

8. Dimensions are from outside of corner post. Allow 0'-s/l_" (8) on each side

for top cover drip edge.

CORNER CS 3" S

iT6)

LEFT SIDE

(lt43}

3/8" OIA CONCENTRIC K.O.

(35)

TOP

iS1)

FRONT

0 3 //8"_

_0"11 _5/I_CORNER B t791

(3031

r[LTERS

ACCESSFARS]OE

VIEW Z-Z

BAROMETRIC RELIEF/POWER EXHAUST

(ACCESSORY ONLY)

SECTION A+A

Fig. 4- Base Unit Dimensions; 48TJ016,020

BTD UNIT ECONOMIZER CORNER CORNER CORNER CORNER

UNIT WEIGHT WEIGHT A B C D

Ib kg Ib kg Ib kg Ib kg Ib kg Ib kg

48TJD,

TJF024 1850 839 90 41 443 201 406 184 476 216 525 238

48TJ D,

TJF028 2000 907 90 41 471 214 428 194 526 239 574 260

DIM A DIM B DIM C

ft-in, mm ft-in, mm ft-in, mm

3-2 965 3-5 1041 1-8 508

3-2 965 3-8 1041 1-8 508

TYPICAL 4CORNERS

NOTES:

1. Refer to print for roof curb accessory dimensions.

2. Dimensions in ( ) are in millimeters•

3. _ Center of Gravity.

4. E_ Direction of airflow•

5. Ductwork to be attached to accessory roof curb only.

6. Minimum clearance:

• Rear: 7'-0" (2134) for coil removal• This dimension can be reduced to

4'-0" (1219) if conditions permit coil removal from the top.

• 4'-0" (1219) to combustible surfaces, all four sides (includes between

units).

• Left side: 4'-0" (1219) for proper condenser coil airflow.

• Front: 4'-0" (1219) for control box access•

• Right side: 4'-0" (1219) for proper operation of damper and power

exhaust if so equipped.

• Top: 6"-0" (1829) to assure proper condenser fan operation•

• Bottom: 14" (356) to combustible surfaces (when not using curb).

• Control box side: 3'-0 _"(914) to ungrounded surfaces, non-combustible.

• Control box side: 3'-6" (1067) to block or concrete walls, or other

grounded surfaces•

• Local codes or jurisdiction may prevail•

7. With the exception of clearance for the condenser coil and the damper/

power exhaust as stated in Note #6, a removable fence or barricade

requires no clearance•

8. Dimensions are from outside of corner post. Allow O'-S/16" (8) on each

side for top cover drip edge.

L£rT SIDE

3'11 1/4'

t12002

(51 I

OIA HOLE (20Z)_

I-_o, 11 lJ,,o COHRER6trg2

13031

SECTION A-A

Fig. 5 -- Base Unit Dimensions; 48TJ024,028

Table 1 -- Physical Data

016D/F

UNIT 48TJ 020D/F 024D/F 028D/F

208/230, 460 v I 575 v

NOMINAL CAPACITY (tons) 15 18 20 25

OPERATING WEIGHT (Ib) 1650 1800 1850 2000

Economizer 90 90 90 90

Roof Curb 200 200 200 200

COMPRESSOR Scroll

1...SM120, 1...SM120, 1...SM161,

Quantity,.,Model (Ckt 1, Ckt 2) 2_.SR*942AE 1_.SR*782AE 1._SM110 1_.SM120

Number of Refrigerant Circuits 2 2 2 2

Oil (oz) (Ckt 1, Ckt 2) 90, 90 110, 72 110,110 112, 110

Stages of Capacity Control (%) 50/50 60/40 52/48 56/44

REFRIGERANT TYPE R-22

Expansion Device TXV

Operating Charge (Ib-oz)

c,rcu,t,* 10-13 I 15-2I 16-3 I 21-0Circuit 2 10-5 11-5 14-8 15-4

CONDENSER COIL Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced,

Aluminum Pre-Coated, or Copper Plate Fins

Rows...Fins/in. 2...17 I3_.15 I3...15 I 4...15

Total Face Area (sq ft) 21.7 21.7 21.7 21.7

CONDENSER FAN Propeller Type

Nominal Cfm 10,400 9300 13,700 12,500

Quantity,..Diameter (in.) 3...22 3..,22 2...30 2...30

Motor Hp...Rpm V2...1050 V2._1050 1..,1075 1.,.1075

Watts Input (Total) 1100 1100 3400 3400

EVAPORATOR COIL Cross-Hatched 3/8-in. Copper Tubes, Aluminum Lanced or

Copper Plate Fins, Face Split

2...17 I3...15 I3_.15 I4_.15

17.5 17.5 17.5 17.5

Centrifugal Type

Rows...Fins/in.

Total Face Area (sq ft)

EVAPORATOR FAN

Quantity...Size (in.)

Type Drive

Nominal Cfm

Motor Hp

Motor Nominal Rpm

Maximum Continuous Bhp

Motor Frame Size

Nominal Rpm High/Low

Fan r/s Range

Motor Bearing Type

Maximum Allowable Rpm

Motor Pulley Pitch Diameter

Min/Max (in.)

Low-Medium Static

High Static

Nominal Motor Shaft Diameter (in.)

Fan Pulley Pitch Diameter (in,)

Nominal Fan Shaft Diameter (in,)

Belt, Quantity...Type...Length (in.)

Pulley Center Line Distance (in.)

Speed Change per Full Turn of

Movable Pulley Flange (rpm)

Movable Pulley Maximum Full Turns

From Closed Position

Factory Speed

Factory Speed Setting (rpm)

Low-Medium Static

High Static

Low-Medium Static

High Static

Low-Medium Static

High Static

Low-Medium Static

High Static

Low-Medium Static

High Static

Fan Shaft Diameter at Pulled/lin.t

LEGEND

Bhp -- Brake Horsepower

TXV -- Thermostatic Expansion Valve

*Circuit 1 uses the lower portion of condenser coil and lower portion of evap-

orator coils; and Circuit 2 uses the upper portion of both coils.

tRollout switch is manual reset.

2,..10 x 10

Belt

6000

3.7

1725

4.25

56H

891-1179

1227-1550

Ball

1550

3.1/4.1

3.7/4.7

7/8

6.0

5.2

13/16

1,..BX_,42

13.5-15.5

3.5

1035

1389

13/16

2,.,10 x 10

Belt

6000

3,0

1725

3,45

56H

1159-1429

Ball

1550

4.3/5,3

6,4

13/16

1,..BX..,45

13.5-15.5

2...12 x 12

Belt

7200

1745

5.90

184T

910-1095

1069-1287

Ball

1550

4.9/5.9

1V8

9,4

8,0

17/16

1.-BX,..50

1.-BX-.48

13.3-14.8

2...12 x 12

Belt

8000

7.5

1745

8.7 [208/230,575 v]

9.5 [460 v]

213T

1002-1225

1193-1458

Ball

1550

5,4/6,6

13/8

9.4

7.9

17/16

1-.BX-.54

1...BX-.50

14.6-15,4

2._12x12

Belt

10,000

1740

10.2 [208/230, 575 v]

11,8 [460 v]

215T

1066-1283

1332-1550

Ball

1550

4,9/5.9

lS/s

8.0

6,4

17/16

2..,BX,..50

2..,BX,..47

14.6-15,4

5 5 5 5

3.5 3.5 3.5 3.5

1296 1002 1120 1182

-- 1178 1328 1470

13/16 17/16 17/16 17/16

**The 48TJ028 units requires 2-in. industrial-grade filters capable of handling

face velocities of up to 625 ft/min (such as American Air Filter no. 5700 or

equivalent).

NOTE: The 48TJ016-028 units have a low-pressure switch (standard) located

on the suction side.

Table 1 -- Physical Data (cont)

UNIT 48TJ

FURNACE SECTION

Rollout Switch Cutout Temp (F)t

Burner Orifice Diameter (in....drill size)

Natural Gas

Thermostat Heat Anticipator Setting (amps)

208/230, 575 Stage 1

460 v

Gas Input

Stage 2

Stage 1

Stage 2

Stage 1

Stage 2

Efficiency (Steady State) (%)

Temperature Rise Range

Manifold Pressure (in. wg)

Natural Gas

Gas Valve Quantity

Field Gas Connection Size (in.-FPT)

HIGH-PRESSURE SWITCH (psig)

Cutout

Reset (Auto)

LOW-PRESSURE SWITCH (psig)

Cutout

Reset (Auto)

FREEZE PROTECTION THERMOSTAT (F)

Opens

Closes

OUTDOOR-AIR INLET SCREENS

Quantity...Size (in.)

016D/F O20D/F 024D/F 028D/F

190

0.1285-.30/0.136-.29

0.98

0.44

0.80

0.44

172,000/225,000

230,000/300,000

15-45/20-50

3.3

3/4

190

0.1285.-30/0.136-.29

0.98

0.44

0.80

0.44

206,000/270,000

275,000/360,000

15-45/20-50

3.3

3/4

190

0.1285.-30/0.136-.29

0.98

0.44

0.80

0.44

206,000/270,000

275,000/360,000

15-45/20-50

3.3

3/4

190

0.1285_.30/0.136...29

0.98

0.44

0.80

0.44

206,000/270,000

275,000/360,000

15-45/20-50

426

32O

3O-+5

45-+5

Cleanable

2...20 x 25 x 1

1...20 x 20 x 1

RETURN-AIR FILTERS Throwaway**

Quantity.,.Size (in.) 4_.20 x 20 x 2

4...16 x 20 x 2

POWER EXHAUST V2 Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)

3.3

3/4

LEGEND

Bhp -- Brake Horsepower

TXV -- Thermostatic Expansion Valve

*Circuit 1 uses the lower portion of condenser coil and lower portion of evap-

orator coils; and Circuit 2 uses the upper portion of both coils.

tRollout switch is manual reset.

**The 48TJ028 units requires 2-in. industrial-grade filters capable of handling

face velocities of up to 625 ft/min (such as American Air Filter no. 5700 or

equivalent).

NOTE: The 48TJ016-028 units have a low-pressure switch (standard) located

on the suction side.

Step 3 -- Field Fabricate Ductwork -- Secure all

ducts to building structure. Use flexible duct connectors be-

tween unit and ducts as required. Insulate and weatherproof all

external ductwork, joints, and roof openings with counter

flashing and mastic in accordance with applicable codes.

Ducts passing through an unconditioned space must be in-

sulated and covered with a vapor barrie];

Step 4 -- Make Unit Duct Connections -- Unit

is shipped for thru-the-bottonl duct connections. Ductwork

openings are shown in Fig. 1, 4, and 5. Duct connections are

shown in Fig. 6. Field-fabricated concentric ductwork may be

connected as shown in Fig. 7 and 8. Attach all ductwork to roof

curb and roof CUlb basepans.

Step 5 -- Install Flue Hood and Wind Baffle --

Flue hood and wind baffle are shipped secured under main

control box. To install, secure flue hood to access panel. See

Fig. 9. The wind baffle is then installed over the flue hood.

NOTE: When properly installed, flue hood will line up with

combustion fan housing. See Fig. 10.

Step 6 -- Trap Condensate Drain -- See Fig, 11

for drain location. One 3/4-in. half coupling is provided inside

unit evaporator section for condensate drain connection. An

81/2-in. x 3/4-in. diameter and 2-in. x 3/4-in. diameter pipe nip-

ple, coupled to standard 3/4-in. diameter elbows, provide a

straight path down through hole in unit base rails (see Fig. 12).

A trap at least 4-in. deep must be used.

HEAT

SEE NOTE

[_AIR

OUT

NOTE: Do not drill in this area; damage to basepan may result in

water leak.

Fig. 6 -- Air Distribution -- Thru-the-Bottom

I'-O1

24"MIN.

BAFFLE

NOTE: Dimensions A, A', and B' are obtained from field-supplied

ceiling diffuser.

Shaded area indicates block-off panels.

Fig. 8- Concentric Duct Details

NOTE SEE NOTE

AIR OUT AIR IN AIR OUT

NOTE: Do not drill in this area; damage to basepan may result in

water leak.

Fig. 7 -- Concentric Duct Air Distribution

\\J

WIND

BAFFLE

FLUE

HOOD

\ ii

,.ii

/\N\

COMBUSTION [l

FANHOUSING [l

(INSIDE) [

[

WIND BAFFLE

MOUNTING HOLES

Fig. 9 -- Flue Hood Location

INDUCED DRAFT

MOTOR

COMBUSTION MAIN BURNER HEAT EXCHANGER

FAN HOUSING SECTION SECTION

Fig. 10- Combustion Fan Housing Location

3/4" FPT DRAIN 1-3/8"

CONNECTION DRAIN HOLE

Fig. 11 -- Condensate Drain Details

(48TJ016 Shown)

3/4 -IN. FPT

DRAIN CONNECTION

(HALF CO_--

BASE RAIL _@_

____. (FIELD-SUPPLIED)NIPPLE

81/2-1N. (FIELD ....

SUPPLIED) NIPPLE

Fig. 12- Condensate Drain Piping Details

Step 7 -- Orifice Change -- This unit is factory as-

sembledfor heating operation using natund gas at an elevation

from sea level to 2000 ft. This unit uses orifice type

LH32RFnnn, where "nnn" indicates the orifice size based on

drill size diameter in thousands of an inch.

HIGH ELEVATION (Above 2000 ft) -- Use accessory high

altitude kit when inst_dling this unit at an elewttion of 2000 to

7000 ft. For elevations above 7000 ft, refer to Table 2 to identi-

fy the correct orifice size for the elevation. See Table 3 for the

number of orifices requiled for each unit size. Purchase these

orifices from your local Carrier dealel: Follow instructions in

accessory Installation Instructions to install the correct orifices.

Table 2 -- Altitude Compensation*

ELEVATION (ft)

0-1,999

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

10,000

NATURAL GAS ORIFICE]-

Low Heat High Heat

30 29

31 30

32 31

33 31

35 32

*As the height above sea level increases, there is less oxygen per

cubic foot of air. Therefore, heat input rate should be reduced at

higher altitudes. Includes a 4% input reduction per each 1000 ft.

1-Orifices available through your Carrier dealer.

Table 3 -- Orifice Quantity

UNIT ORIFICE QUANTITY

48TJD016 5

48TJD020,

48TJD024, 6

48TJD028,

48TJF016

48TJF020,

48TJF024, 7

48TJF028

CONVERSION TO LP (Liquid Propane) GAS -- Use acces-

sory LP gas conversion kit when converting this unit for use

with LP fuel usage for elevations up to 7000 ft. For elevations

above 7000 ft, refer to Table 4 to identify the correct orifice

size for the elewttion. See Table 3 for the number of orifices

required for each unit size. Purchase these orifices from your

loc_fl Carrier dealel: Follow instructions in accessory Installa-

tion Instructions to inst_dl the correct orifices.

Table 4 -- LP Gas Conversion*

ELEVATION (ft)

0-1,999

2,000

3,000

4,000

5,000

6,000

7,000

8,000

0,000

10,000

LP GAS ORIFICE]"

*As the height above sea level increases, there is less oxygen per

cubic foot of air. Therefore, heat input rate should be reduced at

higher altitudes. Includes a 4% input reduction per each 1000 ft.

1-Orifices available through your Carrier dealer.

Step 8 -- Install Gas Piping -- Unit is equipped for

use with natured gas. Installation must conform with loc_d

building codes or. in the absence of loc_d codes, with the

National Fuel Gas Code, ANSI Z223.1.

Install field-supplied manu_d gas shutoff valve with a lh-in.

NPT pressme tap for test gage connection at unit. Field gas pip-

ing must include sediment trap and union. See Fig. 13.

Tlansformer no. 1 is wired for 230-v unit. If 208/230-v unit

is to be run with 208-v power supply, the transformer must be

rewired as follows:

1. Remove cap fiom red (208 v) wire.

2. Remove cap from orange (230 v) spliced wire.

3. Replace orange wire with led wire.

4. Recap both wires.

Do not pressure test gas supply while connected to unit.

Always disconnect union before servicing. Exceeding

maximum manifold pressure may cause explosion and

injury.

I IMPORTANT: Natural gas pressure at unit gas connec-

tion must not be less than 5.5 in. wg or greater than

13.5 in. wg.

Size gas-supply piping for 0.5-in. wg maximum pressure

drop. Do not use supply pipe sm_dler than unit gas connection.

MANUAL SHUTOFF

(FIELD SUPPLIED) _FT'I

__GAS

PRESSURE TAP

(1/8" NPT PLUG)

UNIT _

o& •---- SEDIMENTTRAP

Fig. 13 -- Field Gas Piping

Step 9 -- Make Electrical Connections

FIELD POWER SUPPLY- Unit is factory wiled for volt-

age shown on nameplate.

When inst_dling units, provide a disconnect per NEC (Na-

tional Electrical Code) of adequate size (Table 5).

All field wiring must comply with NEC and local

requirements.

Route power ground lines through control box end panel or

unit basepan (see Fig. 4 and 5) to connections as shown on unit

wiring diagram and Fig. 14.

The correct power phasing is critical in the operation of the

scroll compressol,s. An incorrect phasing will cause the

compressor to rotate in the wrong direction. This may lead

to premature compressor failure.

The unit must be electrically grounded in accor&mce with

local codes and NEC ANSI/NFPA 70 (National Fire Pro-

tection Association) to protect against fire and electric

shock.

Field wiring must confirm to temperature limitations for

type "T" wire. All field wiring must comply with NEC and lo-

cal requirements.

Be certain unused wires ale capped. Failure to do so may

&_magethe transformers.

Operating voltage to compressor must be within voltage

range indicated on unit nameplate. On 3-phase units, voltages

between phases must be balanced within 2%.

Unit failure as a result of operation on improper line voltage

or excessive phase imbalance constitutes abuse and may cause

&Lmage to electrical components.

FIELD CONTROL WIRING -- Install a Carrier-approved

accessory thermostat assembly according to installation in-

structions included with accessory. Ix)cate thermostat assembly

on a solid interior wall in the conditioned space to sense aver-

age temperature.

Route thermostat cable or equivalent single leads of

colored wire from subbase termimds through conduit in unit to

low-voltage connections as shown on unit label wiring diagram

and in Fig. 15.

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American

Wire Gage) insulated wire (35 Cminimum). For 50 to 75 ft,

use no. 16 AWG insulated wire (35 Cminimum). For over

75 ft, use no. 14 AWG insulated wire (35 Cminimum). All

wire larger than no. 18 AWG cannot be directly connected at

the thermostat and will require a junction box and splice at the

thermostat.

Set heat anticipator settings as follows:

VO LTAGE W 1 W2

208/230,575 0.98 0.44

460 0.80 0.44

Settings may be changed slightly to provide a greater degree

of comfort for a particuku installation.

----1 TBI

II FIELD i _

i_II III I III II_

[POWER I _

=U.l ....... SUP_PLY

z z

iI-IN

l EQUIP GND

.............. ]

LEGEND

EQUIP -- Equipment

GND -- Ground

NEC -- National Electrical Code

TB -- Terminal Block

NOTE: The maximum wire size for TB1 is 2/0.

Fig. 14- Field Power Wiring Connections

OPTIONAL NON-FUSED DISCONNECT -- On units with

the optiomfl non-fused disconnect, incoming power will be

wired into the disconnect switch. Refer to Fig. 16 for wiring

for 100 and 200 amp disconnect switches. Units with an

MOCP under 100 will use the 100 amp disconnect switch.

Units with an MOCP over 100 will use the 200 amp discon-

nect switch. Refer to the applicable disconnect wMng diagram.

To prevent breakage during shipping, the disconnect handle

and shaft are shipped and packaged inside the unit control box.

Install the disconnect handle before unit operation. To install

the handle and shaft, perform the following procedure:

1. Open the control box door and remove the handle and

shaft from shipping location.

2. Ix_osen the Allen bolt located on the disconnect switch.

The bolt is located on the square hole and is used to hold

the shaft in place. The shaft cannot be inserted until the

Allen bolt is moved.

3. Insert the disconnect shaft into the squae hole on the dis-

connect switch. The end of the shaft is specially cut and

the shaft can only be inserted in the correct orientation.

4. Tighten the Allen bolt to lock the shaft into position.

5. Close the control box dool:

6. Attach the handle to the external access door with the two

screws provided. When the handle is in the ON position,

the handle will be vertical. When the handle is in the OFF

position, the handle will be horizontal.

7. Turn the handle to the OFF position and close the dool:

The handle should fit over the end of the shaft when the

door is closed.

8. The handle must be in the OFF position to open the con-

trol box dool:

OPTIONAL CONVENIENCE OUTLET-- On units with

optiomfl convenience outlet, a 115-v GFI (ground fault inter-

rupt) convenience outlet receptacle is provided for field wiring.

Field wiring should be run through the 7Is-in. knockout pro-

vided in the basepan near the return air opening.

THERMOSTAT ASSEMBLY

_ Z Z

Lu q z cc o _, cc

cc m a_ o_m m

Fig. 15 -- Field Control Thermostat Wiring

UNIT WIRING 6T3 4T2 2T1 LOAD

lO0 BLK, YEL. BLU.

AMP I

[NON_:EPDOWDEIRsCONNE_T _-- _ _ OA: '

I ;_ ;__T2Ej

FIELD POWER SUPPLY 5L3 3L2 1L1 LINE

UNIT WIRING

200 BLK. YEL. BLU,

AMP 4--+--t--- '

[NON FUSED DISCONNECT __i _i_ Lli E j

FIELD POWER SUPPLY

NOTE: The disconnect takes the place of TB-1 as shown on the unit wiring

diagram label and the component arrangement label.

Fig. 16- Optional Non-Fused Disconnect Wiring

Table 5 -- Electrical Data

UNIT

48TJ

016

(15 Tons)

020

(18 Tons)

O24

(20 Tons)

028

(28 Tons)

NOMINAL VOLTAGE COMPRESSOR OFM

VOLTAGE RANGE No. 1 No, 2

(3Ph, 60Hz) Min Max RLA LRA RLA LRA Q_ Hp FLA(ea) Hp

208/230

460

575

208/230

460

575

208/230

460

575

208/230

46O

575

POWER COMBUSTION

IFM EXHAUST FAN MOTOR

FLA FLA LRA FLA

187 253 25.6 190 25.6 190 3 0.5 1.7 3.7 10.5/11.0 4.6 18.8

414 508 13.5 95 13.5 95 3 0.5 0.8 3.7 4.8 2.3 6.0

518 632 10.2 75 10.2 75 3 0.5 0.8 3.0 3.9 2.1 4.8

187 253 33 237 23 184 3 0.5 1.7 5.0 15.8/15.8 4.6 18.8

414 508 16.2 130 10.2 90 3 0.5 0.8 5.0 7.9 2.3 6.0

518 632 12.7 85 9 73 3 0.5 0.8 5.0 6.0 2.1 4.8

187 253 33 237 29.5 237 2 1 6.6 7.5 25.0/25.0 4.6 18.8

414 508 16.2 130 14.1 130 2 1 3.3 7.5 13.0 2.3 6.0

518 632 12.7 85 11.3 85 2 1 3.4 7.5 10.0 2.1 4.8

187 253 47.5 265 33 237 2 1 6.6 10.0 28.0/28.0 4.6 18.8

414 508 22.9 145 16.2 130 2 1 3.3 10.0 14.6 2.3 6.0

518 632 17.9 102 12.7 85 2 1 3.4 10.0 13.0 2.1 4.8

POWER

SUPPLY

MCA MOCP*

0.57 74/74 90/90

0.57 79/79 100/100

0.30 38 50

0.30 40 50

0.57 30 35

0.57 32 40

0.87 88/88 110/110

0.57 90/90 110/110

0,30 41 80

0.30 43 50

0,87 33 45

0.57 35 45

0.57 109/109 125/125

0.57 114/114 125/125

0.30 54 70

0.30 56 70

0.57 44 80

0.57 46 50

0.87 134/134 178/175

0.57 138/138 175/175

0,30 66 80

0.30 68 90

0.57 55 70

0.57 57 70

LEGEND

FLA -- Full Load Amps

HACR -- Heating, Air Conditioning and Refrigeration

IFM -- Indoor (Evaporator) Fan Motor

LRA -- Locked Rotor Amps

MCA -- Minimum Circuit Amps

MOCP -- Maximum Overcurrent Protection

NEC -- National Electrical Code

OFM -- Outdoor (Condenser) Fan Motor

RLA -- Rated Load Amps

*Fuse or HACR circuit breaker.

cCt os

NOTES:

1. In compliance with NEC requirements for multimotor and combination load

equipment (refer to NEC Articles 430 and 440), the overcurrent protective

device for the unit shall be fuse or HACR breaker. Canadian units may be

fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where, a phase imbalance in supply voltage is

greater than 2_, Use the following formula to determine the percent of volt-

age imbalance,

% Voltage Imbalance

= 100 x max voltage deviation from average voltage

average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v

A B C BC = 464 v

(_ AC =455 v

Average Voltage 482 + 464 + 488

1371

=-- 3

= 457

Determine maximum deviation from average voltage.

(AB) 487 - 482 = 8 v

(BC) 464 - 487 = 7 v

(AC) 487 - 488 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x 487

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum

allowable 2%.

I IMPORTANT: If the supply voltage phase imbalance is more than I

2%, contact your local electric utility company immediately. I

Step 10 -- Make Outdoor-Air Inlet Adjust-

ments

MANUAL OUTDOOR-AIR DAMPER -- All units (except

those equipped with a factory-inst_dled economizer) have a

manual outdoor-air &tmper to provide ventilation ail:

Damper can be preset to admit up to 25% outdoor air into

return-tdr compartment. To adjust, loosen secunng screws and

move &tmper to desired setting, then retighten screws to secure

dmnper (see Fig. 17).

OUTDOOR-AIR HOOD AND

MOUNTING BRACKETS

÷I

25% ADJUSTABLE

AIR DAMPER

o g

SECURING SCREWS

Fig. 17 -- Standard 25% Outdoor-Air

Section Details

BASE

UNIT

F[_ER

PACKAGEAN[

HOOD

COMPONENTS

RETURN-AIRFILTE}

ACCESS PANEL

Fig. 18- Outdoor-Air Hood Component Location

PANEL

Step 11 -- Install Outdoor-Air Hood

IMPORTANT: If the unit is equipped with the optional I

EconoMiSerIV. move the outdoor air temperature sensor I

prior to installing the outdoor air hood. See the Optional

EconoMiSerIV and EconoMiSer2 section for more details.

The outdoor- air hood is common to 25% air ventilation and

economizel: If EconoMiSerIV is used, all electrical connec-

tions have been made and adjusted at the factoly. Assemble

and install hood in the field.

NOTE: The hood top panel, upper and lower filter retainel_,

hood drain pan, baffle (size 024 and 028), and filter support

bracket me secured opposite the condenser end of the unit. The

screens, hood side panels, remaining section of tilter support

bracket, seal strip, and hmdware are in a package located

inside the return-air filter access panel (Fig. 18).

1. Attach seal strip to upper filter retainer. See Fig. 19.

2. Assemble hood top panel, side panels, upper filter retain-

el: and dnun pan (see Fig. 20).

3. Secure lower filter rettuner and support bracket to unit.

See Fig. 20. Leave screws loose on size 024 and 028

units.

4. Slide bafile (size 024 and 028) behind lower filter retainer

and tighten screws.

5. Ix_osen sheet metal screws for top panel of base unit

located above outdoor-air inlet opening, and remove

screws for hood side panels located on the sides of the

outdoor-air inlet opening.

6. Match notches in hood top panel to unit top panel screws.

|nsert hood flange between top panel fange and unit.

Tighten screws.

7. Hold hood side panel flanges flat against unit, and install

screws removed in Step 5.

8. Insert outdoor-air inlet screens and spacer in channel cre-

ated by lower filter retainer and filter support bracket.

UPPER

RETAINER PAN

SEAL;

Fig. 19- Seal Strip Location

BAFFLE

LOWER FILTER

RETAINER

HOOD SIDE

PANELS (2)

BAFFLE

. (024 TO

028 ONLY)

LOWER

FILTER

RETAINER

FILTER SUPPORT

BRACKET

HOOD DRAIN PAN

UPPER FILTER RETAINER

Fig. 20 -- Outdoor-Air Hood Details

Step 12 -- Install All Accessories-- Install all

field-installed accessories. Refer to the accessoly installation

instructions included with each accessory.

MOTORMASTER® I CONTROL INSTALLATION

(48TJ016,020 UNITS)

Install Field-Fabricated Wind Baffles -- Wind baffles must

be field-fabricated for all units to ensure proper cooling cycle

operation at low ambient temperatures. See Fig. 21 for baffle

details. Use 20-gage, galvanized sheet metal, or similar

conosion-resistant metal for baffles. Use field-supplied screws

to attach baffles to unit. Screws should be 1/4-in. diameter and

5/8-in. long. Drill required screw holes for mounting baffles.

To avoid dmnage to the refiigemnt coils and electric_d com-

ponents, use recommended screw sizes only. Use care

when drilling holes.

) MIN

BAFFLE TOP VIEW 1" (25) MIN--_

78.12" -+0.125"

0984 -+3)

.j \

3/4"(19)0-¥P)--'_

BAFFLE FRONT VIEW

NOTE: Dimensions in ( ) are in mm.

I 10" (254)

_..]--" _¥p)

-- 40"

' 1016

_10" (254)

+"-- = ffYP)

""-'--I 15" (381)

-4i----,i 1_ (TYP)

_"_ "1" (25) MIN

Fig. 21 -- Wind Baffle Details

Install Motormaster [Controls -- Only one Motormaster I

control is required per unit. The Motormaster I control must be

used in conjunction with the Accessory 0° F Ix_w Ambient Kit

(purchased separately). The Motormaster [ device controls out-

door fan no. 1 while outdoor fans no. 2 and 3 are sequenced off

by the Accessory 0 ° F Low Ambient Kit.

Accessoiw 0°FDin' Ambient Kit -- Inst_dl the Accessory 0° F

Ix_w Ambient Kit per instruction supplied with accessory.

Sensor Assembly -- Install the sensor assembly in the location

shown in Fig. 25_

Motor Mount- To ensure proper fan height, replace the exist-

ing motor mount with the new motor mount provided with

accessory.

Tran._fiwmer (460 and 575-v Units On@) -- On 460 and 575-v

units, a transhmner is required. The transformer is provided

with the accessory and must be field-installed.

Motormaswr I Control -- Recommended mounting location is

on the inside of the panel to the left of the control box. The

control should be mounted on the inside of the panel, verti-

cally, with leads protruding from bottom of extrusion.

SENSOR

LOCATION

_Oo

_:tOo°

_:toO°

_:to°

_o°

_:_o°

_$o°

_o°

_:to°

€:to°

_o°

_1_oo°

_:_o°

_o°

_oOO°

HAIRPIN END

48TJ016

_o°

SENSOR _ ,_ o

LOCATION _ o

_o°

HAIRPIN END

48TJ020

NOTE: All sensors are located on the eighth hairpin up from the

bottom.

Fig. 22 -- Motormaster I Sensor Locations

MOTORMASTER® V CONTROL INSTALLATION

(48TJ024,028 UNITS)

Install Field-Fabricated Wind Baflles -- Wind baflles must

be field-fabricated for all units to ensure proper cooling cycle

operation at low ambient temperatures. See Fig. 21 for baflle

details. Use 20-gage, galvanized sheet metal, or similar corro-

sion-resistant metal for baffles. Use field-supplied screws to at-

tach baffles to unit. Screws should be l/4-in, diameter and

5/8-in. long. Drill required screw holes for mounting baffles.

To avoid dmnage to the refligerant coils and electrical com-

ponents, use lecommended screw sizes only. Use cme

when &'illing holes.

Install Motormaster V Controls -- The Motormaster V

(MMV) control is a motor speed control device which adjusts

condenser fan motor speed in response to declining liquid le-

frigerant pressure. A properly applied Motormaster V control

extends the operating range of air-conditioning systems and

permits operation at lower outdoor ambient temperatures.

The minimum mnbient temperatures at which the unit will

operate are:

TEMPERATURE OPERATING LIMITS -- F°

Standard Unit with I Unit with

Unit Low Ambient Kit I MMV Control40 25 -20

To operate down to the ambient temperatures listed,

Motormaster V controls (Fig. 23) must be added. Field-fabricat-

ed and installed wind baffles gue _dso required for _dl units (see

Fig. 21). The Motormaster V control permits operation of the

unit to an ambient temperature of-20 IF.The control regulates the

speed of 3-phase fan motors that gue compatible with the control.

These motors me factory installed.

See Table 6 for the Motormaster V control accessory pack-

age usage. Table 7 shows applicable voltages and motors.

Replacement of motor or fan blade IS NOT REQUIRED ON

CURRENT PRODUCTION UNITS since the control is

compatible with the factory-installed fan motors. Only field

wiring control is required.

Inst_dl the Motormaster V control per instructions supplied

with accessory.

TO PRESSURE

TRANSDUCER

FROM FUSE BLOCK

10 o---1

>- ca

u1.2 1.3

13B

ooo

TO MOTOR(S)

Fig. 23 -- Motormaster V Control

Table 6 -- Motormaster VControl Package Usage

UNIT I VOLTAGE

208/230

48TJ024,028 460

575

ITEM DESCRIPTION

CRLOWAMB015A00

CR LOWAMB016A00

CRLOWAMB017A00

Table 7 -- Applicable Voltages and Motors

VOLTAGE COMPATIBLEMOTOR

208/230-3-60 HD52AK654

480-3-60 HD52AK654

575-3-60 HD52GE576

Step 13 --Adjust Factory-Installed Options

PREMIERLINK TM CONTROL -- The PrelnierLink control-

ler is available as a special order from the facto Uand is com-

patible with the Ctmier Comfort Network® (CCN) system.

This control is designed to allow usel_ the access and ability to

change factoly-defined settings, thus expanding the function of

the standard unit control board. Carrier's diagnostic stan&ud

tier display tools such as Navigator r_'_ device or Scrolling

Marquee can be used with the PremierLink controller.

The PremierLink controller (see Fig. 24) requires the use of

a C;urier electronic themiostat or a CCN connection for time

broadcast to initiate its internal timeclock. This is necessmy for

broadcast of time of day functions (occupied/unoccupied). No

sensors are supplied with the field-mounted PremierLink con-

trol. The factou-installed PremierLink control includes only

the supply-tfir temperature (SAT) sensor and the outdoor air

temperature (OAT) sensor as standmd. An indoor air quality

(CO2) sensor can be added as tin option. Refer to Table 8 for

sensor usage. Refer to Fig. 25 for PremierLink controller wir-

ing. The PremierLink control may be mounted in the control

panel or an men below the control panel.

NOTE: PremierLink controller version 1.3 and later is shipped

in Sensor mode. If used with a thermostat, the PremierLink

controller must be configured to Thermostat mode.

Install the Supply Air Temperature (SAT) Sensor -- When

the unit is supplied with a factou-mounted PremierLink con-

trol, the supply-air temperature (SAT) sensor (33ZCSENSAT)

is factory-supplied and wired. The wiring is muted from the

PlemierLink control over the control box, through a grommet,

into the fan section, down along the back side of the fan, and

_dong the fan deck over to the supply-air opening.

The SAT probe is wire-tied to the supply-air opening (on the

horizontal opening end) in its shipping position. Remove the

sensor for installation. Re-position the sensor in the flange of

the supply-air opening or in the supply air duct (as required by

local codes). Drill or punch a l/2-in, hole in the flange or duct.

Use two field-supplied, self-drilling screws to secme the sensor

probe in a horizontal orientation.

NOTE: The sensor must be mounted in the dischmge airstream

downstream of the cooling coil and any heating devices. Be

sure the probe tip does not come in contact with any of the unit

or heat surfaces.

Outdoor Air Temperature (OAT) Sensor -- When the unit is

supplied with a factoly-mounted PremierLink control, the

outdoor-air temperature sensor (OAT) is factory-supplied and

wired.

Install the Indoor Air Quality (CO2) Sensor -- Mount the

optional indoor air quality (CO2) sensor according to manufac-

turer specifications.

A sepmate field-supplied transformer must be used to

power the CO2 sensoc

Wire the CO2 sensor to the COM and IAQI terminals of J5

on the PremierLink controflec Refer to the PremierLink Instal-

lation, Start-up, and Configuration Instructions for detailed

wiring and configuration information.

HVACSENSOR INPUTS 0

SPACE TEMP ,_ [TT_

SET POINT _ t"1

SUPPLY AIR TEMP _ Nil

OUTDOOR TEMP _ ]1il

INDOOR AIR QUALITY _ ETa'

OUTDOOR AIR QUALITY _ 1! [

DUAL MODE SENSOR (STAT) ]Jr_

TH:I

COMP SAFETY (Y1) "J_ H ; I

FIRE SHUTDOWN (Y2) _

SUPPLY PAN STATUS (Wl) "'_[1 i ]

NOT USED (W2) ""I"13 • I

ENTHALPY STATUS (ENTH) /.._]__ttol

CCN/LEN

PORT

0¢

...........................

_ _ , Rm Numt_e 33CSP_lEML_

i2;_1_ PremlerZ_nk .....

....._,___._!.,.a_ _, : -/_

_o_ i ea

I._o'1 I<,<>,<,_/" \ L_I..,,..'It '<I =I If,= _1 '[ '1

/ t 4 20MA/ t_ _

NAVIGATOR -INDOOR COMPR HEAT EXHAUST

PORT ECONOMIZER FAN MOTOR 1 & 2 LOW/HIGH RVSVALVE

OUTPUTS

Fig. 24 -- PremierLink Controller

SAT

GRN

WHT

BLU

_] BLUE

(_ BRN

(_ BLK

BRN

i ORN

BRN • BRN

VlO • VlO

[_ BRN

OAT PNK

RED

BRN

BLU

GRN

YEL

BLU

RED

_Lu

RRN

BLK

COM

BRN CO_'_

w• _

BRN COM

RED _

COM

DDC

CONF{OL

GRN_

RED _

YEL

RED _

BLU

RED FT FsD

PremierLink

Control

(_-- WNT

CL01

DDC CONTROL R TSTAT CONTROL

CMP SAFE Y1 Y1

FSD Y2 Y2

SFS Wl Wl

NOT USED W2 W2

RMTOCC G G

c c c

x x x

TB2t

w2=_-T_

q I

I '

TB_1 I I

i 7 II_

I IL

I I

LWriT WHT _

RED RED T _

PNK RED C_ ]

_ORN ORN _ _' NOT ]

__ RED _ _ ECONO USED ] RELAYS

IIII IIIII IIIIIIII IIIIIIIIIIIIII

I RJo "

,RA , II R,O, REDRED ,RED

'w.z /

J_ _'"EO BLUW_T_1_O_,NR_o

_F,ELD [_ _ GRINYEL/ _

"(_ PL1 TRANSFORMER BOR FpR1OM8 FROM FGRC_M MFGRv(wM2 FGROM

_PL FROM

IGC-G

ECONOMIZER LEGEND

(_ 50TJ401148

(CRECOMZROIOBO0) CLO -- Compressor Lockout

CMP -- Compressor

WNTI _2 ECONO-- Economizer

I 4-20ma

ECONO ENTH -- Enthalpy Sensor

MOTOR IGC -- Integrated Gas Unit Controller

MGV -- Main Gas Valve

OAT -- Outdoor Air Temperature Sensor

PL -- Plug

SAT -- Supply Air Temperature Sensor

SPT -- Space Temperature Sensor

TB -- Terminal Block

*If PremierLink control is in thermostat mode.

1-TB2 terminal designations for 24 vac discrete inputs. Default is for DDC control.

L_ RED

Fig. 25 -- PremierLink TM Controls Wiring

Table 8 -- PremierLink TM Sensor Usage

OUTDOOR AIR RETURN AIR OUTDOOR AIR RETURN AIR

APPLICATION TEMPERATURE SENSOR TEMPERATURE SENSOR ENTHALPY SENSOR ENTHALPY SENSOR

DifferentialDryBulb

Temperature with Required --

PremierLink* Included-- 33ZCT55SPT -- --

(PremierLink HH79NZ039 or Equivalent

requires 4-20mA

Actuator)

Single Enthalpy with Required --

PremierLink* 33CSENTHSW

(PremierLink Included -- -- (HH57ZC003) --

requires 4-20mA NotUsed or

Actuator) HH57AC077

Differential Enthalpy Required -- Required --

with PremierLink* Included-- 33CSENTHSW 33CSENTSEN

(PremierLink NotUsed -- (HH57ZC003) or

requires 4-20mA or HH57AC078

Actuator) HH57AC077

*PremierLink control requires supply air temperature sensor 33ZCSENSAT and

outdoor air temperature sensor HH79NZ039 -- included with factory-installed PremierLink control;

field-supplied and field-installed with field-installed PremierLink control.

NOTES:

1. CO2 Sensors (Optional):

33ZCSENCO2 -- Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.

33ZCASPCO2 -- Aspirator box used for duct-mounted CO2 room sensor.

33ZCT55CO2 -- Space temperature and CO2 room sensor with override.

33ZCT56CO2 -- Space temperature and CO2 room sensor with override and setpoint.

2. All units include the following Standard Sensors:

Outdoor-air sensor -- 50HJ540569 -- Opens at 67 F,closes at 52 F,not adjustable.

Mixed-air sensor -- HH97AZ001 -- (PremierLink control requires supply air temperature sensor 33ZCSENSAT

and outdoor air temperature sensor HH79NZ039)

Compressor lockout sensor -- 50HJ540570 -- Opens at 35 E closes at 50 E

ENTHALPY SWITCH/RECEIVER -- The accessory en-

thalpy switclffreceiver (33CSENTHSW) senses temperature

and humidity of the air surrounding the device and calculates

the enthalpy when used without an enth_dpy sensol: The relay is

energized when enthalpy is high and deenergized when en-

thalpy is low (based on ASHRAE [American Society of Heat-

ing, Refrigeration and Air Conditioning Engineersl 90.1 crite-

ria). If an accessory enthalpy sensor (33CSENTSEN) is at-

tached to the return air sensor input, then differential enth_dpy is

calculated. The relay is energized when the enthalpy detected by

the return air enth_dpy sensor is less than the enthalpy at the en-

thalpy switch/receivel: The relay is deenergized when the en-

thalpy detected by the return air enthalpy sensor is greater than

the enthalpy at the enthalpy switch/receiver (differential en-

thalpy control). See Fig. 26 and 27.

OUTDOOR ENTHALPY CONTROL (Fig. 28) -- Outdoor

enthalpy control requires only an enthalpy switclffreceiver

(33CSENTHSW). The enthalpy switclffreceiver is mounted in

the outdoor air inlet and calculates outdoor air enthalpy. The

enthalpy switch/receiver energizes the relay output when the

outdoor enthalpy is above 28 BTU/Ib OR @ bulb tempera-

ture is above 75 F and is deenergized when the outdoor

enthalpy is below 27 BTU/Ib AND dry bulb temperature is

below 74.5 IF.The relay output is wired to the unit economizer

which will open or close depending on the output of the

switch.

NOTE: The enthalpy calculation is done using an average alti-

tude of 1000 ft above sea level.

Mounting -- Mount the enthalpy switch/receiver in a location

where the outdoor air can be sampled (such as the outdoor air

intake). The enthalpy switch/receiver is not a NEMA 4

(Natiomd Electrical Manufacturers Association) enclosure and

should be mounted in a location that is not exposed to outdoor

elements such as rain or snow. Use two field-supplied no. 8 x

3/4-in. TEK screws. Insert the screws through the holes in the

sides of the enthalpy switchheceiver

Wiring -- Cmrier recommends the use of 18 to 22 AWG

(American Wire Gage) twisted pair or shielded cable for all

wiring. All connections must be made with l/4-in, female spade

connectors.

A 24-vac transformer is required to power the enthalpy

switch/receiver; as shown in Fig. 29, the PremierLink TM board

provides 24 vac. Connect the GND and 24 VAC terminals on

the enthalpy switclffreceiver to the terminals on the transform-

er. On some applications, the power from the economizer har-

ness can be used to power the enthalpy switclffreceivel: To

power the enthalpy switclffreceiver from the economizer har-

ness, connect power of the enthalpy switclffreceiver to the red

and brown wires (1 and 4) on the economizer hmness.

For connection to rooftop units with PlemierLink TM control,

connect the LOW Enthalpy terminal on the enthalpy switch/re-

ceiver to J4 -- pin 2 of the PremierLink control on the HVAC

unit. The switch can be powered through the PremierLink con-

trol board if desired. Wire the 24 VAC terminal on the enthalpy

switch/receiver to J4 -- pin 1 on the PremierLink control. Wile

the GND terminal on the enthalpy switch/receiver to Jl --

pin 2 on the PremierLink control. The HI Enthalpy terminal is

not used. See Fig. 28.

Thermistor

fSensor

Fig. 26 -- Enthalpy SwitchlReceiver Dimensions

(33CSENTHSW)

Thermistor _ S Humidi_ Sensor

Fig. 27 -- Enthalpy Sensor Dimensions

(33CSENTSEN)

....... _(OR UNIT GROUND)

*Used with Differential Enthalpy Control only,

Fig. 28 -- Typical Wiring Schematic -- Carrier Rooftop Unit with PremierLink Controls

DIFFERENTIAL ENTHALPY CONTROL (Fig. 29) --

Diffemntifd enthalpy control mquiles both fin enthalpy switch/

receiver (33CSENTHSW) and fin enthalpy sensor

(33CSENTSEN). The enthalpy switchkeceiver is mounted in

the outdoor air inlet and calculates outdoor air enthalpy. Tile

enthalpy sensor is mounted in the return airstream and cfflcu-

lates the enthalpy of the indoor all:

The enthalpy switclffleceiver energizes the HI Enthalpy re-

lay output when the outdoor enthalpy is greater than file indoor

enthalpy. The LOW Enthalpy terminal is energized when the

outdoor enthalpy is lower than the indoor enthalpy. The relay

output is wired to the unit economizer which will open or close

depending on the output of the switch.

NOTE: The enthalpy calculation is done using an average alti-

tude of 1000 fl above sea level.

Mounting -- Mount the enthalpy switch/receiver in a location

where the outdoor air can be sampled (such as the outdoor air

intake). The enthalpy switch/receiver is not a NEMA 4 enclo-

sure fred should be mounted in a location that is not exposed to

outdoor elements such as rain, snow. or dilect sunlight. Use

two field-supplied no. 8 x 3/4-in. TEK screws. Insert the screws

through the holes in the sides of the enthalpy switclffreceivel:

Mount the enthalpy sensor in a location whele the indoor air

can be smnpled (such as the return air duct). The enthalpy

sensor is not a NEMA 4 enclosure and should be mounted in a

location that is not exposed to outdoor elements such as rain or

snow. Use two field-supplied no. 8 x 3/4-in. TEK screws. Insert

the screws through the holes in the sides of the enthalpy sensol:

Wiring -- Carrier recommends the use of 18 to 22 AWG

twisted pair or shielded cable for all wiring. All connections

must be made with I/4-in. female spade connectors.

The PlemierLink TM board provides 24-vac to power the

enthfflpy switch/receivel: Connect the GND and 24 VAC termi-

nals on the enthfflpy switch/receiver to the terminals on

the transformer On some applications, the power from the

economizer hmness can be used to power the enthalpy switch/

leceivel: To power the enthalpy switchkeceiver from the

economizer harness, connect power of the enthalpy switch/

receiver to the led and brown wires (1 and 4) on the econo-

mizer harness.

Connect the LOW Enthalpy terminal on the enthalpy

switch/receiver to J4 -- pin 2 of the PlemierLink control on the

HVAC unit. The switch can be powered through the Premier-

Link control board if desired. Wire file 24VAC terminal on the

enthalpy switclffreceiver to J4 -- pin 1 on the PremierLink

control. Wire the GND terminal on the enthalpy switch/

receiver to Jl -- pin 2 on the PremierLink control. The HI

Enthalpy terminal is not used. See Fig. 28.

Connect the 4-20 mA IN terminal on the enthalpy switch/

receiver to the 4-20 mA OUT terminal on the return air en-

thalpy sensor. Connect the 24-36 VDC OUT terminfd on the

enthalpy switch/leceiver to the 24-36 VDC IN terminal on the

return air enthalpy sensor. See Fig. 29.

Enthalpy Switch/Receiver Jumper Settings -- There are two

jumpers. One jumper determines the mode of the enthalpy

switch/receivel: The other jumper is not used. To access the

jumpers, lemove the 4 screws holding the cover on the

enthalpy switclffreceiver find then remove the covel: The fac-

tory settings for the jumpers me M I and OFE

The mode jumper should be set to M2 for differential en-

thalpy control. The factory test jumper should remain on OFF

or the enthalpy switch/receiver will not calculate enthalpy.

120 VAC

LINE VOLTAGE

_jk.jM.Z.__/ ]

24 VAC OUTPUT FROM N/C CONTACT WHEN THE

OUTDOOR ENTHALPY IS LESS THAN THE f

INDOOR ENTHALPY ,i ORN

24 VAC OUTPUT FROM N/O CONTACT WHEN THE 4--

INDOOR ENTHALPY IS GREATER THAN THE

OUTDOOR ENTHALPY

HI LOW GND 24

ENTHALPY VAC

33CSENTHSW

4-20 24-36

mA VDC

IN OUT

fj!

24-36 4-20

VDC mA

IN OUT

33CSENTSEN

LEGEND

N/C -- Normally Closed

N/O -- Normally Open

JUMPER SETTINGS FOR 33CSENTHSW JUMPER SETTINGS FOR 33CSENTSEN

O o on

[l°°°l

O0 000

Fig. 29 -- Differential Enthalpy Control Wiring

Enthalpy Sensor Jumper Settings -- There me two jumpers.

One julnper determines the mode of the enthalpy sensor. The

other jumper is not used. To access the jumpers, relnove the

4 screws holding the cover on the enthalpy sensor and then re-

move the covel: The factory settings for the jumpers are M3

and OFF.

The mode jumper should be set to M3 for 4 to 20 mA

output. The factory test jumper should remain on OFF or the

enthalpy sensor will not calculate enth_dpy.

ENTHALPY SENSORS AND CONTROL -- The enthalpy

control (HH57AC077) is supplied as a field-installed accessory

to be used with the EconoMiSer2 &unper control option. The

outdoor air enthalpy sensor is part of the enthalpy control. The

separate field-installed accessory return air enthalpy sensor

(HH57AC078) is required for differential enthalpy control.

NOTE: The enthalpy control must be set to the "D" setting for

differenti_d enthalpy control to work properly.

The enthalpy control receives the indoor and return

enthalpy from the outdoor and return air enthalpy sensol_ and

provides a dry contact switch input to the PremierLink TM

controllel: Locate the controller in place of an existing econo-

mizer controller or near the actuatol: The mounting plate may

not be needed if existing bracket is used.

A closed contact indicates that outside air is preferred to the

return air An open contact indicates that the economizer

should remain at minilnuln position.

Outdoor Air Enthalpy Sensor/Enthalpy Controller

(HH57AC077) -- To wire the outdoor air enthalpy sensor,

perform the following (see Fig. 30 and 31 ):

NOTE: The outdoor air sensor can be removed froln the back

of the enth_dpy controller and mounted relnotely.

1. Use a 4-conductol, 18 or 20 AWG cable to connect the

enthalpy control to the PremierLink controller and power

tl_dnsformel:

2. Connect the following 4 wires fiom the wire h_uness

located in rooftop unit to the enthalpy controller:

a. Connect the BRN wire to the 24 vac terminal (TRI)

on enthalpy control and to pin 1 on 12-pin harness.

b. Connect the RED wire to the 24 vac GND terminal

(TR) on enthalpy sensor and to pin 4 on 12-pin

harness.

c. Connect the GRAY/ORN wire to J4-2 on Premier-

Link controller and to terminal (3) on enthalpy

sensor.

d. Connect the GRAY/RED wire to J4-1 on Premier-

Link controller and to terminal (2) on enthalpy sensol:

NOTE: If installing in a Carrier rooftop, use the two gray wires

provided fiom the control section to the economizer to connect

PrelnierLink controller to terminals 2 and 3 on enth_dpy sensol:

Return Air Enthalpy Sensor -- Mount the return-air enthalpy

sensor (HH57AC078) in the return-air duct. The return air

sensor is wired to the enthalpy controller (HH57AC077). The

outdoor enth_dpy changeover set point is set at the controller.

To wire the return air enthalpy sensol; perform the follow-

ing (see Fig. 30):

1. Use a 2-conductor, 18 or 20 AWG, twisted pair cable to

connect the return air enthalpy sensor to the enthalpy

controller.

2. At the enthalpy control remove the factory-installed

resistor fi_m the (SR) and (+) terminals.

3. Connect the field-supplied RED wire to (+) spade

connector on the return air enthalpy sensor and the (SR+)

terminal on the enthalpy controllel: Connect the BLK

wire to (S) spade connector on the return air enthalpy

sensor and the (SR) terminal on the enthalpy controller.

ENTHALPY CONTROLLER RED

TR r_ TRI_"" BRN

A( CSOD+rn--

SRI-h+ID-

LED

/OUTDOOR[

AIR

ENTHALPY

BLK SENSOR)

RED

___]1 F[S (RETURN AIR I

[] + ENTHALPY

SENSOR

GRAY/ORN

LWIRE HARNESS

GRAY/RED JIN UNIT

NOTES:

1. Remove factory-installed jumper across SR and + before con-

necting wires from return air sensor,

2. Switches shown in high outdoor air enthalpy state. Terminals 2

and 3 close on low outdoor air enthalpy relative to indoor air

enthalpy.

3. Remove sensor mounted on back of control and locate in out-

side airstream.

Fig. 30 -- Outdoor and Return Air Sensor Wiring

Connections for Differential Enthalpy Control

HH57AC077

ENTHALPY

CONTROL AND

OUTDOOR AIR

ENTHALPY SENSOR

HH57AC078 ENTHALPY

SENSOR (USED WITH

ENTHALPY CONTROL

FOR DIFFERENTIAL

ENTHALPY OPERATION)

÷ ÷

MOUNTING PLATE

Fig. 31 -- Differential Enthalpy Control,

Sensor and Mounting Plate (33AMKITENT006)

OPTIONAL ECONOMISERIV AND ECONOMISER2 --

See Fig. 32 and 33 for EconoMiSerIV component locations.

See Fig. 34 for EconoMi$er2 component locations.

NOTE: These instructions are for installing the optional

EconoMiSerIV and EconoMiSer2 only. Refer to the accessory

EconoMiSerIV or EconoMiSer2 installation instructions when

field installing an EconoMi$erIV or EconoMiSer2 accessory.

To complete inst_fllation of the optional EconoMiSerIV. per-

form the following procedure.

1. Remove the EconoMiSerIV hood. Refer to Step 11 -- In-

stall Outdoor-Air Hood on page 14 for information on

removing and installing the outdoor-air hood.

2. Relocate outdoor air temperature sensor from shipping

position to operation position on EconoMiSerIV. See

Fig. 32.

IMPORTANT: Failure to relocate the sensor will result in

the EconoMiSerIV not operating properly.

SCREWS ECONOMI$ERIV

OUTDOOR AIR

TEMPERATURE SENSOR

FRAME SCREWS (INSTALLED OPERATION

IUb' POSITION)

LOW TEMPERATURE

COMPRESSOR

LOCKOUT SWITCH

Fig. 32--EconoMiSerlVComponent Locations--

End View

3. Reinstall economizer hood.

4. Install _dl EconoMiSerIV accessories. EconoMiSerlV

wiring is shown in Fig. 35. EconoMi$er2 wiring is shown

in Fig. 36.

Outdoor air leakage is shown in Table 9. Return air pressure

drop is shown in Table 10.

Table 9 -- Outdoor Air Damper Leakage

DAMPER STATIC PRESSURE (in. wg)

0.2 0.4 0.6 0.8 1.0 1.2

LEAKAGE (cfm) 35 53 65 75 90 102

Table 10 -- Return Air Pressure Drop (in. wg)

CFM

4500 5000 5400 6000 7200 7500 9000 10,000 11,250

0.040 0.050 0.060 0.070 0.090 0.100 0.110 0.120 0.140

FRAME ECONOMISER2 SCREWS

SCREWS.

i_ 7

ju/J N2

Fig. 34- EconoMi$er2 Component Locations

SUPPLY AIR

TEMPERATURE SENSOR

LOCATION

ECONOMI$ERIV

FLANGE

(HIDDEN)

[

Fig. 33 -- EconoMi$erlV Component Locations-

Side View

L1 _4

L1 -S

- (NOT BSEDI

L1-9 m

PLI _8

TO MAIN PLI _5

CONTROL /_ I

BOX PL1-6

PLI-II 1

PLI*I

PLI _R

PL1-10

(NOT USED)

LEGEND

DCV -- Demand Controlled Ventilation

IAQ --Indoor Air Quality

LALS I Low Temperature Compressor

Lookout Switch

OAT IOutdoor_Air Temperature

POT -- Potentiometer

-- ORN

(FIE£B

ACCESSORY}

REMOTE MIN

POSITION POT

_E_T[ POT (ISS_hmT "

DISCHARGE AIR

SENSOR (Bk Ohm)

BLK_I_EO -

1 fIELD INSTALLED _IA_

FIAO SENSORI .....

I I OAT TEWPI L

I 1 ENTHALPY SENSOR

I I _Lu-

I I .T--

RETURN AIR TEHP!

1 ENTRALPY SEICSOR

IT _---

I I

1 l BLU

I l PNK--_

I I RED LALS

I I FIELD SPLICE

,_I aR.

FIELD SPLICE

ECONOMIZER MOTOR

Potentiometer Default Settings: NOTES:

Power Exhaust Middle

Minimum Pos. Fully Closed

DCV Max, Middle

DCV Set Middle

Enthalpy C Setting

YEL

PNK

-8LU

RED

EXH

I_ 1 [_ SET

BLK BV IOV

POS

OPEN

2v IBv

_so. N _ SET

_v lov

/BC

[COBOMISER il

BOARD

1, 620 ohm, 1 watt 5% resistor should be removed only when using differential

enthalpy or dry bulb.

2, If a separate field-supplied 24 v transformer is used for the IAQ sensor power

supply, it cannot have the secondary of the transformer grounded.

3, For field-installed remote minimum position POT, remove black wire jumper

between P and P1 and set control minimum position POT to the minimum

position,

Fig. 35 -- EconoMi$erlV Wiring

NOTE 1

NOTE 2

50HJ540573

ACTUATOR

ASSEMBLY

RUN

DIRECT DRIVE

ACTUATOR

500 OHM

RESISTOR- "L_

OAT

RED

PINK

BLUE

BLACK

WHITE

ECONOMI$ER2 PLUG

LEGEND

OAT -- Outdoor Air Temperature Sensor

NOTES:

1. Switch on actuator must be in run position for economizer to operate.

2. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

Fig. 36 -- EconoMi$er2 Wiring

ECONOMISERIV STANDARD SENSORS

Outdoor Air Temperature (OAT) Sensor -- The outdoor air

temperature sensor (HH57AC074) is a 10 to 20 mA device

used to measure the outdoor-air temperature. The outdoor-air

temperature is used to determine when the EconoMiSerIV can

be used for free cooling. The sensor must be field-relocated.

See Fig. 32. The operating range of temperature measurement

is 40 to 100E

Supply Air Temperature (SAT) Sensor -- The supply air

temperature sensor is a 3 K tl_ermistor located at the inlet of the

indoor fan. See Fig. 33. This sensor is factory inst_flled. The op-

erating range of temperature measurement is 0° to 158 E See

Table 11 for sensor temperature/resistance values.

The temperature sensor looks like an eyelet terminal with

wires running to it. The sensor is located in the "crimp end"

and is settled from moisture.

Low Temperature Compressor Lockout Switch -- The

EconoMiSerIV is equipped with an ambient temperature lock-

out switch located in the outdoor airstrealn which is used to

lockout the compressols below a 42 F ambient temperature.

See Fig. 32.

Table 11 -- Supply Air Sensor Temperature/

Resistance Values

TEMPERATURE (F) RESISTANCE (ohms)

-58 200,250

-40 100,680

-22 53,010

-4 29,091

14 15,590

32 9,795

50 5,970

68 3,747

77 3,000

86 2,416

104 1,597

122 1,080

140 745

158 525

176 376

185 321

194 274

212 203

230 153

248 115

257 102

266 89

284 70

302 55

ECONOMI$ERIV CONTROL MODES

IMPORTANT: The option_d EconoMi$er2 does not include

a controllel: The EconoMiSer2 is operated by a 4 to 20 mA

signal from an existing field-supplied controller (such as

PrelnierLink TM control). See Fig. 36 for wiring information.

Determine the EconoMiSerlV control mode befole set up of

the control. Some modes of operation may lequire diffelent sen-

sors. Refer to Table 12. The EconoMi$erlV is supplied from the

factory with a supply air temperature sensor, a low temperature

complessor lockout switch, and an outdoor air temperature

sensol: This allows for operation of the EconoMi$erIV with

outdoor air diy bulb changeover control. Additional accesso-

ries can be added to _dlow for different types of changeover

control and operation of the EconoMiSerlV and unit.

Table 12 -- EconoMi$erlV Sensor Usage

APPLICATION

Outdoor Air

Dry Bulb

Differential Dry Bulb

Single Enthalpy

Differential Enthalpy

CO2 for DCV Control

using aWall-Mounted

CO2 Sensor

CO2 for DCV Control

using a Duct-Mounted

CO2 Sensor

ECONOMISERIV WITH OUTDOOR AIR

DRY BULB SENSOR

Accessories Required

None. The outdoor air dry bulb sensor

is factory installed.

CRTEMPSN002A00*

HH57AC078

and

CRENTDIF004A00*

33ZCSENCO2

33ZCSENCO2t

and CRCBDiOX005A00tt

33ZCASPCO2**

*CRENTDiF004A00 and CRTEMPSN002A00 accessories are used on

many different base units. As such, these kits may contain parts that

will not be needed for installation.

1-33ZCSENCO2 is an accessory CO2 sensor.

**33ZCASPCO2 is an accessory aspirator box required for duct-

mounted applications.

1-1-CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2

and 33ZCASPCO2 accessories.

Outdoor DLy Bulb Changeover -- The standard controller is

shipped from the factory configured for outdoor &y bulb

changeover control. The outdoor air and supply air temperature

sensors me included as standard. For this control mode, the

outdoor temperature is compmed to an adjustable set point se-

lected on the control. If the outdoor-air temperature is above

the set point, the EconoMiSerIV will adjust the outdoor-air

dampers to minimum position. If the outdoor-air temperature is

below the set point, the position of the outdoor-air dampers will

be controlled to provide free cooling using outdoor ail: When

in this mode, the LED next to the free cooling set point potenti-

ometer will be on. The changeover temperature set point is

controlled by the free cooling set point potentiometer located

on the control. See Fig. 37. The sc_fle on the potentiometer is A,

B, C, and D. See Fig. 38 for the corresponding temperature

changeover values.

Differential Dry Bulb Control -- For differential dry bulb

control the standard outdoor @ bulb sensor is used in conjunc-

tion with an additional accessory return air sensor (part number

CRTEMPSN002A00). The accessory sensor must be mounted

in the return airstream. See Fig. 39.

In this mode of operation, the outdoor-air temperature is

compared to the return-air temperature and the lower tempera-

ture airstream is used for cooling. When using this mode of

changeover control, turn the free cooling/enthalpy set point

potentiometer fully clockwise to the D setting. See Fig. 37.

EXHAUST

FAN SET POINT

LED LIGHTS

WHEN EXHAUST

CONTACT IS MADE

MINIMUM DAMPER

POSITION SETTING

MAXIMUM DAMPER

DEMAND CONTROL

VENTILATION SET POINT

LED LIGHTS WHEN

DEMAND CONTROL

VENTILATION iNPUT

IS ABOVE SET POINT

DEMAND CONTROL

VENTILATION SET POINT

LED LIGHTS WHEN

OUTDOOR AIR IS

SUITABLE FOR

FREE COOLING

FREE COOLING /ENTHALPY

CHANGEOVER SET POINT

Fig. 37 -- EconoMi$erlV Controller Potentiometer

and LED Locations

16-

E14

LED ON

-- - LED OFF

45 50 55

_ED ON

LED O;

_< LED ON-- --

"t,4

I LED OFF

{

65 70 75 80 85 90 95 100

DEGREES FAHRENHEIT

Fig. 38 -- Outside Air Temperature

Changeover Set Points

Outdoor Enthalpy Changeover -- For enthalpy control, tic-

cessoq enthalpy sensor (part number HH57AC078) is

required. Replace the stan&ud outdoor dry bulb temperature

sensor with the accessory enthalpy sensor in the same mount-

ing location. See Fig. 32. When the outdoor tfir enthalpy rises

above the outdoor enth_@y changeover set point, the outdoor-

air damper moves to its minimum position. The outdoor

enthalpy changeover set point is set with the outdoor enthalpy

set point potentiometer on the EconoMiSerIV controllel: The

set points are A, B, C, and D. See Fig. 40. The factory-installed

620-ohm jumper must be in place across terminals SR and SR+

on the EconoMiSerIV controllel: See Fig. 32 and 41.

Differential Enthalpy Control -- For differential enthalpy

control, the EconoMiSerIV controller uses two enthalpy sen-

sors (HH57AC078 and CRENTDIF004A00), one in the out-

side air and one in the return airstream or the EconoMiSerIV

frmne. The EconoMiSerIV controller compares the outdoor tfir

enthalpy to the return tfir enthalpy to determine EconoMiSerIV

use. The controller selects the lower enthalpy air (return or out-

door) for cooling. For example, when the outdoor air has a low-

er enthalpy than the return air and is below the set point, the

EconoMiSerIV opens to bring in outdoor air for free cooling.

Replace the standard outside air ch_ bulb temperature sen-

sor with the accessory enth_dpy sensor in the same mounting

location. See Fig. 32. Mount the return air enthalpy sensor in

the return airstream. See Fig. 39. The outdoor enthalpy

changeover set point is set with the outdoor enth_flpy set point

potentiometer on the EconoMiSerIV controllel: When using

this mode of changeover control, turn the enth_flpy set point

potentiometer fiJlly clockwise to the O setting.

NOTE: Remove 620-ohm resistor if differential enthalpy sen-

sor is installed.

Indoor Air Quality (IAQ) Sensor [nput -- The IAQ input

can be used for demand control ventilation control based on the

level of CO2 measured in the space or return air duct.

Mount the accessory IAQ sensor according to manufacturer

specifications. The IAQ sensor should be wired to the AQ and

AQI terminals of the controllel: Adjust the DCV potentiome-

ters to correspond to the DCV voltage output of the indoor tfir

quality sensor at the user-determined set point. See Fig. 42.

If a sepmate field-supplied transformer is used to power the

IAQ sensor, the sensor must not be grounded or the

EconoMiSerlV control bomd will be damaged.

Exhaust Set Point Adjustment -- The exhaust set point will

determine when the exhaust fan runs based on dmnper position

(if accessory power exhaust is installed). The set point is modi-

fied with the Exhaust Fan Set Point (EXH SET) potentiometel:

See Fig. 37. The set point represents the cktmper position above

which the exhaust fan will be turned on. When there is a

c_dl for exhaust, the EconoMiSerIV controller provides a

RETURN AIR

IAQ TEMPERATURE

SENSOR OR ENTHALPY

SENSOR

Fig. 39 -- Return Air Temperature or

Enthalpy Sensor Mounting Location

45 _+15 second delay before exhaust fan actiw_tion to allow the

dampers to open. This delay _fllows the damper to reach the

appropriate position to avoid unnecessary fan overload.

Minimum Position Control -- There is a minimum damper

position potentiometer on the EconoMi$erIV controllel: See

Fig. 37. The minimum dmnper position mainttfins the mini-

mum airflow into the building during the occupied period.

When using demand ventilation, the minimum &tmper po-

sition represents the minimum ventilation position for VOC

(volatile organic compound) ventilation requirements. The

maximum demand ventilation position is used for fully occu-

pied ventilation.

When demand ventilation control is not being used, the

minimum position potentiometer should be used to set the oc-

cupied ventilation position. The maximum demand ventilation

position should be turned fully clockwise.

Adjust the minimum position potentiometer to _fllow the

minimum amount of outdoor air. as required by local codes, to

enter the building. Make minimum position adjustments with

at least 10° F temperature difference between the outdoor and

return-air temperatures.

To determine the minimum position setting, perform the

following procedure:

1. Calculate the appropriate mixed-air temperature using the

following formula:

OA + (TR RA

(To x l-T-if(]-) x _ ) = TM

To = Outdoor-Air Temperature

OA = Percent of Outdoor Air

TR = Return-Air Temperature

RA = Percent of Return Air

TM = Mixed-Air Temperature

As an example, if local codes require 10% outdoor air

during occupied conditions, outdoor-_fir temperature is

60 IF.and return-air temperature is 75 IF.

(60 x. 10) + (75 x .90) = 73.5 F

CONTROL CONTROL POINT

CURVE APPROX. °F (°C)

AT 50% RH

A 73 (23)

B 70 (21)

C 67/19)

D 63 (17)

85 90 95 100 105 110

(29) (32) (35) (38) (41) (43)

\1 /I \

XI IX _

35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110

(2) (4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)

APPROXIMATE DRY BULB TEMPERATURE-- °F (°C)

Fig. 40 -- Enthalpy Changeover Set Points

CURVE

DCV

2OV

...........................................TRr_'_ TR1

AOlI'_ocv_

_AO_ DCV

so+N '

SO_l_JI

SR+ tee

sR_1__1_7 °

..... ..... ....

EF1

Fig. 41 -- EconoMi$erlV Controller

6000

5000

iO4000

3000

,7-

:_ 1000

CO 2 SENSOR MAX RANGE SETTING

2345678

DAMPER VOLTAGE FOR MAX VENTILATION RATE

Fig. 42 -- 002 Sensor Maximum Range Setting

2. Disconnect the supply-air sensor from termimds T and

TI.

3. Ensure that file factory-installed jumper is in place across

terminals P and PI. If remote damper positioning is being

used, make sure that file tenninals are wired according to

Fig. 35 and that the minimum position potentiometer is

turned fully clockwise.

4. Connect 24 vac across terminals TR and TRI.

5. Carefiflly adjust the minimum position potentiometer

until the measured mixed-air temperature matches the

c_dculated value.

6. Reconnect the supply-air sensor to terminals T and TI.

Remote control of the EconoMiSerIV damper is desilable

when requiring additional tempormy ventilation. If a

field-supplied remote potentiometer (Honeywell part number

$963B1128) is wired to the EconoMiSerIV controllek the min-

imum position of the damper can be controlled from a remote

location.

To control the minimum damper position lemotely, remove

the factory-installed jumper on the P and Pl terminals on the

EconoMi$erIV controllec Wire the field-supplied potentiolne-

ter to the P and Pl terminals on the EconoMiSerIV controllec

See Fig. 41.

Damper Movement -- Damper movement from full open to

full closed (or vice velsa) takes 21/2 minutes.

Thermostats -- The EconoMiSerIV control works with con-

ventional thermostats that have a YI (cool stage 1), Y2 (cool

stage 2), WI (heat stage 1), W2 (heat stage 2), _md G (fan). The

EconoMiSerIV control does not support space temperature

senso_.s. Connections are made at the thermostat terminal con-

nection board located in the main control box.

Occupancy Control -- The factory default configuration for

the EconoMiSerIV control is occupied mode. Occupied status

is provided by the red jumper from terminal 9 to terminal 10 on

TB2. When unoccupied mode is desired, install a field-

supplied timeclock fimction in place of the jumper between ter-

minals 9 and 10 on TB2. See Fig. 35. When the timeclock

contacts me closed, file EconoMiSer[V control will be in

occupied mode. When the timeclock contacts are open (remov-

ing the 24-v signal from termimd N), the EconoMiSerlV will

be in unoccupied mode.

Demand Controlled Ventilation (DCV) -- When using the

EconoMiSerlV for demand controlled ventilation, there me

some equipment selection criteria which should be considered.

When selecting the heat capacity and cool capacity of the

equipment, the maximum ventilation rate must be evaluated for

design conditions. The maximum damper position must be c_d-

culated to provide the desired fresh ail:

Typically file maximum ventilation rate will be about 5 to

10% more than the typical cfm required per pel.son, using

normal outside air design criteria.

A proportional anticipatory strategy should be taken with

the following conditions: a zone with a large area, varied occu-

pancy, and equipment that cannot exceed the required ventila-

tion rate at design conditions. Exceeding the required ventila-

tion rate means the equipment can condition air at a maximum

ventilation rate that is greater than the required ventilation rate

for maximum occupancy. A proportional-anticipatory strategy

will cause file fresh air supplied to increase as the room COz

level increases even though the CO2 set point has not been

reached. By the time the CO2 level reaches the set point, the

dmnper will be at maximum ventilation and should maintain

the set point.

In order to have the CO2 sensor control the economizer

dmnper in this manner, first determine the damper voltage out-

put for minimum or base ventilation. Base ventilation is the

ventilation required to remove contmninants during unoccu-

pied periods. Tile following equation may be used to determine

the percent of outside-air entering the building for a given

damper position. For best results there should be at least a

10 degree difference in outside and return-air temperatures.

OA RA

(To x l---ff_)+ (TR x _ ) = TM

To = Outdoor-Air Temperature

OA = Percent of Outdoor Air

TR = Return-Air Telnperature

RA = Percent of Return Air

TM = Mixed-Air Temperature

Once base ventilation has been determined, set the mini-

mum damper position potentiometer to the correct position.

The same equation can be used to determine the occupied or

maximum ventilation rate to the building. For example, an out-

put of 3.6 volts to the actuator provides a base ventilation rate

of 5% and an output of 6.7 volts provides the maximum venti-

lation rate of 20% (or base plus 15 cfm per person). Use Fig. 42

to determine the maximum setting of file CO2 sensoc For ex-

ample, a 1100 ppm set point relates to a 15 cfm per person de-

sign. Use the 1100 ppm curve on Fig. 42 to find the point when

the CO2 sensor output will be 6.7 volts. Line up the point on the

graph with the left side of the chart to determine that the range

configuration for the CO2 sensor should be 1800 ppm. The

EconoMiSerIV controller will output the 6.7 volts fiom the

CO2 sensor to the actuator when the CO__concentration in the

space is at 1100ppm. The DCV set point may be left at 2 volts

since the CO2 sensor voltage will be ignored by the

EconoMiSerIV controller until it rises above the 3.6 volt setting

of the minimum position potentiomete_:

Once the fully occupied dmnper position has been deter-

mined, set file maximum dmnper demand control ventilation

potentiometer to this position. Do not set to the maximum posi-

tion as this can result in over-ventilation to the space and poten-

tial high-humidity levels.

CO2_Sensor Configuration -- The CO2 sensor has preset

standard voltage settings that can be selected anytime after the

sensor is powered up. See Table 13.

Use setting 1 or 2 for Carrier equipment. See Table 13.

1. Press Clear and Mode buttons. Hold at least 5 seconds

until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear

3. Use the Up/Down button to select the preset numbel: See

Table 13.

4. Press Enter to lock in file selection.

5. Press Mode to exit and resume norm_d operation.

The custom settings of the CO2 sensor can be changed any-

time after the sensor is energized. Follow the steps below to

change file non-stan&trd settings:

1. Press Clear and Mode buttons. Hold at least 5 seconds

until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appem:

3. Use the Up/Down button to toggle to the NONSTD menu

and press Entel:

4. Use the Up/Down button to toggle through each of the

nine variables, starting with Altitude, until file desired set-

ting is reached.

5. Press Mode to move through the variables.

6. Press Enter to lock in the selection, then press Mode to

continue to the next vmiable.

Table 13 -- 002 Sensor Standard Settings

ANALOG

OUTPUT

SETTING

EQUIPMENT

Interface with Standard

Building Control System

Economizer

Health & Safety

9Parking/Air Intakes/

Loading Docks

LEGEND

ppm -- Parts Per Million

OUTPUT

Proportional

Exponential

Proportional

Exponential

Proportional

VENTILATION

RATE

(cfm/Pereon)

Any

0-10V

4-20 mA

2-10V

7-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

002

CONTROLRANGE

(ppm)

0-2000

0-1100

0- 900

0-1100

0- 900

0-9999

0-2000

OPTIONAL

RELAY SETPOINT

(ppm)

1000

1100

900

1100

900

5000

700

RELAY

HYSTERESIS

(ppm)

50O

Dehumidification of Fresh Air with DCV Control -- Infor-

mation flom ASHRAE indicates that the largest humidity load

on any zone is the flesh air introduced. For some applications,

a field-installed energy recovely unit can be added to reduce

the moisture content of file fiesh tfir being brought into the

building when the enthalpy is high. In most cases, the normal

heating and cooling processes are more than adequate to re-

move the humidity loads for most commerci_d applications.

If nonnal rooftop heating and cooling operation is not ade-

quate for the outdoor humidity level, an enel_y recovery unit

and/or a dehumidification option should be considered.

Step 14 -- Install Humidistat for Optional

MoistureMi$er TM Package-- MoistureMi$er dehu-

midification package operation can be controlled by field in-

stallation of a Canier-approved humidistat. To install the humi-

distat perform the following procedure:

1. Locate humidistat on a solid interior wall in the condi-

tioned space. Location should be a well ventilated area

to sense average humidity.

2. Route thermostat cable or equivalent single leads of col-

ored wire from Humidistat terminals through conduit in

unit to the low voltage connection on the 2-pole terminal

strip (TB3) as shown in Fig. 43 and Fig. 44. See Fig. 45

for operation_d diagram.

MOISTUREMI$ER

_-_YEL-

BLK

?-_ BLK_

YEL

TRANt 2_4_

GRN-YEL

LEGEND

CB -- Circuit Breaker

LLSV -- Liquid Line Solenoid Valve

LPS -- Low-Pressure Switch

TB -- Terminal Block

TRAN -- Transformer

TRAN

24V

GRN-YEL

TO CRANKCASE

1HEATER CIRCUITS

BLK

LLSVksv__

S-LPS1

CB4 TB3

BLK--

3.2 AMPS S LPS2 L

FACTOR

(OR HUMIDISTATIF USED)

Fig. 43- Typical MoistureMi$er TM Dehumidification Package

Humidistat Wiring Schematic (460 V Unit Shown)

f I[L D CONTROL

FACTORY _RSIALLEO JURPER

(REMOVE IF RUM_OISTAT IS USED)

Fig. 44 -- Typical MoistureMi$er Dehumidification

Package Control Box

CONDENSER COiL ,

SUCTION

l DISCHARGE

F CCH

CRANKCASE

HEATER

OUTDOOR AiR

EVAPORATOR

COIL

S-LPS J

SUB COOLERCONTROL

LOW PRESSURESWITCH

TXV

SUBCOOLER /

COIL

EQUALIZER

LINE

INDOOR AIR

3-WAY

VALVE

TXV -- Thermostatic Expansion Valve

Fig. 45 -- MoistureMi$er TM Dehumidification Package Operation Diagram

START-UP

Use the following information and Start-Up Checklist on

page CL-I to check out unit PRIOR to start-up.

Unit Preparation -- Check that unit has been installed in

accordance with these installation instructions and all applica-

ble codes.

COMPRESSOR MOUNTING -- Do not loosen or remove

complessor holddown bolts.

REFRIGERANT SERVICE PORTS -- Each reh'igerant sys-

tem has a total of 3 Schrader-type service gage ports. One port

is located on the suction line, one on the compressor discharge

line, and one on the liquid line. In addition Schmder-type

valves are located underneath the low-pressme switches. Be

sure that caps on the polls are tight.

COMPRESSOR ROTATION

48TJ016 and 020 Only -- The unit is equipped with a Phase

Monitor Relay (PMR) board located in the control box. The

PMR device will not allow the unit to run if field power is con-

nected incorrectly. To determine if the Phase Monitor Relay is

preventing the unit from starting, check to see if the red LED is

blinking, ff the LED is blinking, the 3-phase field power has

been wiled incorrectly. A solid light means that field power

connections are correct.

48TJ024 and 028 Only -- It is important to be certain the

compressors are rotaing in the proper direction. To determine

whether or not compressoB are rotaing in the proper direction:

I. Connect service gages to suction and discharge pressure

fittings.

2. Energize the compressoc

3. The suction pressure should &op and the discharge pres-

sure should rise, as is normal on any start-up.

If the suction pressure does not drop and the discharge pres-

sure does not rise to normal levels:

1. Note that the evaporator fan is probably also rotating

in the wrong direction.

2. Turn off power to the unit.

3. Reverse any two of the incoming power leads.

4. Turn on power to the unit.

5. Energize each compressoc

The suction and discharge pressure levels should now move

to their normtd start-up levels.

NOTE: When compressors are rotating in the wrong direction,

the unit will have increased noise levels and will not provide

heating and cooling.

After a few minutes of reverse operation, the scroll com-

pressor intermfl overload protection will open, which will acti-

vate the unit's lockout and requires a manual reset. Reset is

accomplished by turning the thermostat on and off.

INTERNAL WIRING -- Check all electrical connections in

unit control boxes; tighten as required.

CRANKCASE HEATER (SIZE 028 AND UNITS WITH

MOISTUREMI$ER TM DEHUMIDIFICATION PACKAGE

ONLY) -- Crankcase heater(s) is energized as long as there is

power to the unit and the compressor is not operating.

IMPORTANT: Unit power must be on for 24 houB prior to Istart-up. Otherwise, &mmge to the compressor may result. I

EVAPORATOR FAN- Fan belt and vmiable pulleys are

factory-installed. Remove tape from the fan pulley. See

Tables 14-19 for fan performance data. Be sure that fans rotate

in the proper direction. See Table 20 for air quantity limits. See

Tables 21-23 for static pressure information for accessories and

options. See Table 24 for fan rpm tit motor pulley settings. See

Tables 25 and 26 for evaporator-fan motor data and evaporator-

fan motor efficiency. To alter fan performance, see Evaporator

Fan Perforlnance Adjustment section on page 40.

NOTE: A 31/2-in. bolt and threaded plate are included in the

installer's packet for 48TJ020-028 units. They can be added to

the motor support channel below the motor mounting plate to

aid in raising the fan motor

AIRFLOW

(cfm)

4500

4800

5100

5400

5700

6000

6300

6600

6900

7200

7500

Table 14 -- Fan Performance -- 48TJD016 (Low Heat Units)

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

0.2 0.4 0,6 0,8 1.0 1.2

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

809 1.83 1317 906 1.74 1502 994 1.96 1690 1078 2.18 1882 1156 2.41 2077 1230 2,64 2275

850 1.76 1516 942 1,98 1706 1027 2.20 1899 1107 2.43 2094 1183 2,66 2293 1255 2,89 2495

892 2.01 1733 979 2.24 1928 1061 2,46 2125 1138 2.70 2325 1211 2,93 2528 1281 3,17 2733

934 2.28 1970 1017 2.52 2169 1096 2,75 2371 1170 2.99 2575 1241 3.22 2781 1309 3,47 2990

976 2.58 2225 1058 2,82 2429 1132 3,06 2635 1204 3.30 2843 1272 3.54 3053 1338 3,79 3266

1019 2.90 2500 1096 3,14 2709 1168 3,38 2919 1238 3.63 3131 1304 3.88 3345 1368 4,13 3562

1063 3.24 2795 1136 3,49 3008 1206 3,74 3223 1273 3,99 3439 1337 4.24 3657 -- -- --

1106 3.61 3111 1177 3,86 3329 1244 4,11 3547 1309 4.37 3767 ......

1150 4.00 3448 1218 4,26 3670 ............

AIRFLOW

(cfm)

4500

4800

5100

5400

5700

6000

6300

6600

6900

7200

7500

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

1,4 1.6 1,8 1.9 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1301 2.87 2477 1369 3,11 2683 1434 3,35 2891 1497 3.47 2997 1497 3,80 3103

1324 3.13 2700 1390 3,37 2909 1454 3,62 3120 1515 3.74 3226 1515 3,87 3334

1349 3.41 2942 1413 3,88 3153 1475 3,90 3367 1535 4.03 3475 1535 4,18 3584

1374 3.71 3202 1437 3,96 3418 1498 4,21 3633 ......

1402 4.04 3481 1463 4.29 3699 .........

LEGEND

Bhp -- Brake Horsepower

FlOP -- Factory-Installed Option

Watts -- Input Watts to Motor

NOTES:

1, Standard low-medium static drive range is 891 to 1179 rpm (for 208/230

and 460-v units) or 1159 to 1429 rpm (for 575-v units). Alternate high-

static drive range is 1227 to 1550 (for 208/230 and 460-v units), The

alternate high-static drive is not available for 48TJ016 575-v units. Other

rpms require a field-supplied drive,

2, Maximum continuous bhp is 4.25 (208/230 and 460 v) or 3,45 (575 v)

and the maximum continuous watts are 3775 (208/230 and 460 v) or

3065 (575 v). Do not adjust motor rpm such that motor maximum bhp

and/or watts is exceeded at the maximum operating cfm.

3. Static pressure losses (i.e., economizer) must be added to external static

pressure before entering Fan Performance table.

4. Interpolation is permissible. Do not extrapolate.

5. Fan performance is based on wet coils, clean filters, and casing losses.

See Tables 21-23 for accessory/FlOP static pressure information.

6. Extensive motor and drive testing on these units ensures that the full

horsepower and watts range of the motor can be utilized with confi-

dence. Using fan motors up to the watts or bhp rating shown will not

result in nuisance tripping or premature motor failure. Unit warranty will

not be affected.

7. Use of a field-supplied motor may affect wiring size. Contact your Carrier

representative for details.

Table 15 -- Fan Performance -- 48TJD020 and 024 (Low Heat Units)

AIRFLOW

(cfm)

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

0,2 0,4 0,6 0,8 1.0 1,2

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

5,500 755 2,27 1908 831 2.58 2171 901 2.91 2443 968 3.24 2723 1031 3.58 3009 1091 3,93 3302

6,000 810 2,72 2287 881 3.04 2556 947 3.37 2833 1010 3,71 3118 1070 4.05 3408 1127 4,40 3702

6,500 868 3,22 2710 932 3.55 2985 994 3.88 3288 1054 4,23 3554 1111 4.57 3847 1166 4,93 4148

7,000 923 3,78 3177 985 4.11 3458 1044 4.45 3744 1100 4.80 4036 1155 5,15 4333 1207 5,51 4635

7,500 980 4,39 3690 1038 4.73 3976 1094 5.07 4267 1148 5.43 4564 1200 5.78 4864 1250 6,15 5170

8,000 1038 5,08 4251 1093 5.40 4542 1148 5.75 4838 1197 6.11 5138 1248 6.47 5443 1294 6,84 5752

8,500 1096 5.78 4859 1148 6.13 5156 1198 8.49 5458 1247 6.85 5761 1294 7.22 6070 1340 7,59 6382

9,000 1154 6,56 5517 1204 6.92 5818 1251 7,28 6123 1298 7.65 6432 1343 8.02 6745 1388 8,40 7062

9,500 1213 7.40 6224 1260 7.77 6531 1306 8.13 6840 1350 8.51 7154 1394 8.88 7471 1436 9,26 7791

10,000 1272 8,30 6983 1317 8.67 7294 1360 9.05 7608 1403 9.43 7926 1445 9.81 8247 1486 10.19 8570

AIRFLOW

(cfm)

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

AVAILABLE EXTERNAL STATIC PRESSURE(in. wg)

1.4 1.6 1,8 1.9 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Wat_

1149 4.28 3602 1204 4,65 3907 1258 5,02 4217 1284 5,20 4375 1309 5,39 4533

1183 4.76 4003 1238 5,13 4310 1288 5,50 4622 1313 5.68 4780 1337 5,87 4939

1219 5.29 4450 1270 5,66 1459 1320 6,03 5073 1344 6.22 5232 1368 6,41 5391

1258 5.88 4942 1307 6,25 5253 1355 6,62 5569 1378 6,81 5729 1402 7,00 5890

1299 6.52 5480 1346 6,89 5794 1392 7,27 6113 1415 7,46 6273 1437 7.65 6435

1341 7.21 6065 1387 7,59 6383 1392 7,97 6704 1453 8,16 6866 1475 8,36 7028

1385 7.97 6699 1429 8,35 7019 1472 8,73 7343 1493 8,93 7506 1514 9,12 7670

1431 8.78 7382 1473 9,15 7705 1515 9,55 8032 1535 9,75 8196 -- -- --

1478 9.65 8114 1519 10,04 8441 .......

LEGEND

Bhp -- Brake Horsepower

FlOP -- Factory-Installed Option

Watts -- Input Watts to Motor

NOTES:

1, Standard low-medium static drive range for the 020 size is 910 to

1095 rpm. Standard low-medium static drive range for the 024 size is

1002 to 1225 rpm. Alternate high-static drive range for the 020 size is

1069 to 1287, Alternate hig h-static drive range for the 024 size is 1193 to

1458 rpm. Other rpms require a field-supplied drive,

2, Maximum continuous bhp for the 020 size is 5,90. Maximum continuous

bhp for the 024 size is 8.7 (208/230, 575 v) or 9.5 (460 v). The maximum

continuous watts for the 020 size is 5180. The maximum continuous

watts for the 024 size is 7915 (208/230, 575 v) or 8640 (460 v). Do not

adjust motor rpm such that motor maximum bhp and/or watts is

exceeded at the maximum operating cfm.

3. Static pressure losses (i.e., economizer) must be added to external static

pressure before entering Fan Performance table.

4. Interpolation is permissible. Do not extrapolate.

5. Fan performance is based on wet coils, clean filters, and casing losses.

See Tables 21-23 for accessory/FlOP static pressure information.

6. Extensive motor and drive testing on these units ensures that the full

horsepower and watts range of the motor can be utilized with confi-

dence. Using fan motors up to the watts or bhp rating shown will not

result in nuisance tripping or premature motor failure. Unit warranty will

not be affected.

7. Use of a field-supplied motor may affect wiring size. Contact your Carrier

representative for details.

Table 16 -- Fan Performance -- 48TJD028 (Low Heat Units)

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(cfrn) 0.2 0.4 0.6 0.8 1.0 1.2

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

7,000 941 3,35 2769 1002 3.60 3140 1061 4,27 3528 1117 4.76 3934 1171 5.27 4356 1224 5.60 4794

7,500 999 4,05 3346 1057 4.53 3742 1112 5,02 4152 1166 5.54 4579 1218 6.07 5020 1266 6.63 5478

8,000 1056 4,85 4007 1113 5.35 4424 1165 5,87 4856 1216 6.41 5304 1266 6,97 5766 1314 7.55 6243

8,500 1117 5,74 4750 1169 6.28 5190 1219 6,83 5645 1268 7.40 6114 1315 7,98 6597 1361 6.58 7094

9,000 1177 6,75 5583 1226 7.31 6047 1274 7,89 6524 1320 8.48 7015 1365 9,09 7520 1410 9.72 8037

9,500 1237 7,98 6511 1284 8.46 6999 1329 9,07 7499 1374 9.69 8012 1417 10,33 8538 1459 10.98 9076

10,000 1297 9,12 7450 1342 9.74 8051 1385 10,37 8574 1428 11.02 9110 1469 11,68 9657 1510 12.36 10217

10,500 1358 10,49 8674 1400 11.14 9209 1442 11,80 9755 1483 12.47 10314 1523 13,16 10883 -- -- --

11,000 1418 12,00 9919 1459 12.67 10478 ............

11,250 1449 12,80 10585 ...............

AIRFLOW

(cfm)

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,250

AVAILABLE EXTERNAL STATIC PRESSURE (in, wg)

1,4 1,6 1,8

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1274 6.35 5248 1323 6,92 5718 1371 5.54 6204

1316 7.20 6960 1364 7,79 6437 1410 6.41 6939

1360 8.14 6734 1406 8,76 7239 1450 7.40 7759

1406 9.20 7605 1449 9,83 8129 1492 8.48 8666

1453 10,36 8568 1495 11.02 9111 1536 9.69 9667

1501 11,64 9627 1541 12,32 10190 -- -- --

LEGEND

Bhp -- Brake Horsepower

FlOP -- Factory-Installed Option

Watts -- Input Wattsto Motor

NOTES:

1. Standard low-medium static drive range is 1066 to 1283 rpm, Alternate

high-static drive range is 1332 to 1550. Other rpms require a field-

supplied drive,

2. Maximum continuous bhp is 10.2 (208/230, 575 v) or 11.8 (460 v) and

the maximum continuous watts are 9510 (208/230, 575 v) or 11,000

(460 v). Do not adjust motor rpm such that motor maximum bhp and/or

watts is exceeded at the maximum operating cfm.

3. Static pressure losses (i,e., economizer) must be added to external static

pressure before entering Fan Performance table,

4. Interpolation is permissible. Do not extrapolate,

5. Fan performance is based on wet coils, clean filters, and casing losses.

See Tables 21-23 for accessory/FlOP static pressure information,

6. Extensive motor and drive testing on these units ensures that the full

horsepower and watts range of the motor can be utilized with confi-

dence, Using fan motors up to the watts or bhp rating shown will not

result in nuisance tripping or premature motor failure. Unit warranty will

not be affected.

7. Use of a field-supplied motor may affect wiring size. Contact your Carrier

representative for details,

AIRFLOW

(cfm)

4500

4800

5100

5400

5700

6000

6300

6600

6900

7200

Table 17 -- Fan Performance -- 48TJF016 (High Heat Units)

AVAILABLE EXTERNAL STATIC PRESSURE (in, wg)

0,2 0,4 0.6 0,8 1.0 1.2

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

819 1,55 1335 914 1,76 1518 1001 1,98 1705 1083 2.20 1894 1160 2,42 2088 1234 2,65 2284

861 1,78 1538 951 2,00 1726 1035 2,22 1916 1113 2.45 2110 1188 2,68 2307 1259 2,91 2507

904 2,04 1759 989 2,26 1952 1069 2,49 2147 1145 2,72 2345 1218 2,95 2545 1287 3,17 2749

947 2,32 1999 1028 2,55 2197 1105 2,78 2396 1179 3,01 2598 1248 3,25 2802 1315 3,49 3009

990 2,62 2259 1068 2,85 2461 1142 3,09 2665 1213 3,33 2871 1280 3,57 3079 1345 3,81 3289

1034 2,94 2539 1109 3,18 2745 1180 3,42 2953 1248 3.67 3163 1313 3,91 3375 1376 4,16 3589

1078 3,29 2840 1150 3,54 3050 1218 3,78 3262 1284 4.03 3476 1348 4,28 3692 -- -- --

1123 3,67 3161 1192 3,91 3376 1258 4,16 3592 .........

1167 4,06 3504 1234 4,32 3723 ............

AIRFLOW

(cfm)

45OO

4800

5100

5400

5700 1408 4,06 3503 1468 4,31 3718 --

6000 .......

6300 .......

6600 .......

6900 .......

7200 .......

LEGEND

Bhp -- Brake Horsepower

FlOP -- Factory-Installed Option

Watts -- Input Wattsto Motor

AVAILABLE EXTERNAL STATIC PRESSURE (in, wg)

1.4 1.6 1.8 1.9 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1304 2.88 2484 1371 3.12 2688 1435 3.36 2895 1467 3,48 2999 1497 3.60 3104

1327 3,14 2711 1393 3,38 2917 1456 3,62 3126 1486 3,75 3232 1517 3.87 3338

1353 3,43 2955 1417 3,67 3165 1478 3,92 3377 1508 4,04 3484 1537 4.16 3592

1380 3,73 3219 1442 3,98 3432 1502 4,23 3646 1531 4,35 3755

NOTES:

1. Standard low-medium static drive range is 891 to 1179 rpm (for 208/230

and 460-v units) or 1159 to 1429 rpm (for 575-v units). Alternate high-

static drive range is 1227 to 1550 (for 208/230 and 460-v units). The

alternate high-static drive is not available for 48TJ016 575-v units, Other

rpms require a field-supplied drive,

2. Maximum continuous bhp is 4,25 (208/230 and 460 v) or 3.45 (575 v)

and the maximum continuous watts are 3775 (208/230 and 460 v) or

3065 (575 v). Do not adjust motor rpm such that motor maximum bhp

and/or watts is exceeded at the maximum operating cfm,

3. Static pressure losses (i,e., economizer) must be added to external static

pressure before entering Fan Performance table,

4. Interpolation is permissible. Do not extrapolate,

5. Fan performance is based on wet coils, clean filters, and casing losses.

See Tables 21-23 for accessory/FlOP static pressure information,

6. Extensive motor and drive testing on these units ensures that the full

horsepower and watts range of the motor can be utilized with confi-

dence, Using fan motors up to the watts or bhp rating shown will not

result in nuisance tripping or premature motor failure, Unit warranty will

not be affected.

7. Use of a field-supplied motor may affect wiring size. Contact your Carrier

representative for details,

.3.3

Table 18 -- Fan Performance- 48TJF020 and 024 (High Heat Units)

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(cfm) 0.2 0.4 0.6 0.8 1.0 1.2

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

5_500 795 2.43 2043 866 2.74 2306 934 3.07 2578 998 3.40 2856 1059 3.74 3142 1117 4.08 3434

6,000 854 2.92 2452 921 3.24 2722 984 3.57 3998 1044 3.90 3281 1102 4.25 3570 1158 4.60 3865

6,500 914 3.46 2909 977 3.79 3184 1036 4.12 3465 1093 4.46 3752 1148 4.81 4045 1201 5.16 4343

7,000 975 4.06 3414 1034 4.39 3695 1090 4.73 3981 1144 5.08 4272 1196 5.43 4569 1246 5.79 4870

7,500 1037 4.72 3969 1092 5.06 4255 1145 5.41 4546 1196 5.76 4842 1256 6.12 5142 1294 6.48 5447

8,000 1099 5.44 4575 1150 5.79 4866 1201 6.14 5162 1249 6.50 5462 1297 6.86 5766 1343 7.22 6075

8,500 1161 6.22 5232 1210 6.57 5529 1258 6.93 5829 1304 7.29 6134 1349 7.66 6443 1393 8.03 6755

9,000 1223 7.07 5943 1270 7.43 6245 1315 7.79 6550 1360 8.16 6869 1403 8.53 7171 1445 8.90 7487

9,500 1286 7.98 6708 1331 8.34 7014 1374 8.71 7324 1416 9.08 7638 1457 9.46 7954 1498 9.84 8274

10,000 1349 8.95 7528 1392 9.32 7839 1433 9.70 8154 1473 10.07 8471 ......

AIRFLOW

(cfm)

5,500

6,000

6,500

7,000

7,500

8,000

8,500

9,000

9,500

10,000

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

1.4 1,6 1,8 1,9 2,0

Rpm Bhp W_ Rpm Bhp Watts Rpm Bhp Wat_ Rpm Bhp Watts Rpm Bhp Watts

1173 4.44 3732 1227 4.80 4036 1279 5.17 4345 1304 5.35 4502 1329 5.54 4629

1211 4.95 4165 1263 5.32 4471 1313 5.69 4782 1337 5.87 4939 1361 6.06 5097

1252 5.53 4646 1302 5.89 4954 1350 6.26 5267 1373 6.56 5425 1396 6.64 5584

1295 6.16 5176 1343 6.52 5487 1389 6.90 5802 1412 7.09 5961 1434 7.28 6121

1340 6.85 5756 1386 7.22 6070 1431 7.60 6387 1452 7.79 6547 1474 7.98 6709

1388 7.60 6388 1431 7.97 6704 1474 8.35 7024 1495 8.54 7186 1516 8.74 7348

1436 8.41 7071 1478 8.79 7390 1520 9.17 7713 1540 9.37 7876 -- -- --

1486 9.28 7807 1527 9.67 8130 .........

1538 10.22 8597 ............

LEGEND

Bhp -- Brake Horsepower

FlOP -- Factory-Installed Option

Watts -- Input Watts to Motor

NOTES:

1. Standard low-medium static drive range for the 020 size is 910 to

1095 rpm. Standard low-medium static drive range for the 024 size is

1002 to 1225 rpm. Alternate high-static drive range for the 020 size is

1069 to 1287. Alternate hig h-static drive range for the 024 size is 1193 to

1458 rpm. Other rpms require a field-supplied drive.

2. Maximum continuous bhp for the 020 size is 5.90. Maximum continuous

bhp for the 024 size is 8.7 (208/230, 575 v) or 9.5 (460 v). The maximum

continuous watts for the 020 size is 5180. The maximum continuous

watts for the 024 size is 7915 (208/230, 575 v) or 8640 (460 v). Do not

adjust motor rpm such that motor maximum bhp and/or watts is

exceeded at the maximum operating cfm.

3. Static pressure losses (i.e., economizer) must be added to external static

pressure before entering Fan Performance table.

4. Interpolation is permissible. Do not extrapolate.

5. Fan performance is based on wet coils, clean filters, and casing losses.

See Tables 21-23 for accessory/FlOP static pressure information.

6. Extensive motor and drive testing on these units ensures that the full

horsepower and watts range of the motor can be utilized with confi-

dence. Using fan motors up to the watts or bhp rating shown will not

result in nuisance tripping or premature motor failure. Unit warranty will

not be affected.

7. Use of a field-supplied motor may affect wiring size. Contact your Carrier

representative for details.

Table 19 -- Fan Performance -- 48TJF028 (High Heat Units)

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW 0.2 0.4 0.6 0.8 1,0 1.2

(cfm) Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

7,000 992 4.05 3,348 1051 4.44 3,668 1106 4.83 3995 1160 5.24 4331 1212 5.65 4675 1262 6.08 5026

7,500 1055 4.77 3,947 1110 5.17 4,277 1162 5.58 4615 1214 6.00 4960 1263 6.43 5312 1311 6.86 5672

8,000 1118 5.58 4,610 1170 5.99 4,950 1220 6.41 5298 1268 6.84 5653 1315 7.27 6014 1361 7.72 6382

8,500 1182 6.46 5,339 1231 6.88 5,690 1278 7.31 6047 1324 7.75 6411 1369 8.20 6782 1413 8.66 7158

9,000 1246 7.42 6,136 1292 7.86 6,498 1337 8.30 6865 1381 8.75 7239 1424 9.21 7618 1466 9.68 8003

9,500 1310 8.47 7,005 1354 8.92 7,377 1397 9.38 7754 1439 9.84 8137 1480 10.31 8525 1520 10.79 8918

10,000 1374 9.61 7,947 1416 10.07 8,329 1457 10.54 8715 1497 11.02 9107 1537 11.50 9504 -- -- --

10,500 1439 10.84 8,964 1479 11.32 9,356 1518 11.79 9752 .........

11,000 1503 12.17 10,059 1542 12.65 10,460 ............

11,250 1536 12.86 10,636 ...............

AIRFLOW

(cfm)

7,000

7,500

8,000

8,500

9,000

9,500

10,000

10,500

11,000

11,250

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6 1.8

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1311 6.51 5385 1359 6.96 5751 1405 6.00 6124

1358 7.30 6039 1403 7.76 6412 1448 6.84 6792

1406 8.17 6767 1560 8.63 7137 1492 7.75 7524

1456 9.12 7541 1498 9.59 7929 1539 8.75 8323

1507 10.15 8393 1548 10.63 8790 -- -- --

LEGEND

Bhp -- Brake Horsepower

FlOP -- Factory-Installed Option

Watts -- Input Watts to Motor

NOTES:

1. Standard low-medium static drive range is 1066 to 1283 rpm. Alternate

high-static drive range is 1332 to 1550. Other rpms require a field-

supplied drive.

2. Maximum continuous bhp is 10.2 (208/230, 575 v) or 11.8 (460 v) and

the maximum continuous watts are 9510 (208/230, 575 v) or 11,000

(460 v). Do not adjust motor rpm such that motor maximum bhp and/or

watts is exceeded at the maximum operating cfm.

3. Static pressure losses (i.e., economizer) must be added to external static

pressure before entering Fan Performance table.

4. Interpolation is permissible. Do not extrapolate.

5. Fan performance is based on wet coils, clean filters, and casing losses.

See Tables 21-23 for accessory/FlOP static pressure information.

6. Extensive motor and drive testing on these units ensures that the full

horsepower and watts range of the motor can be utilized with confi-

dence. Using fan motors up to the watts or bhp rating shown will not

result in nuisance tripping or premature motor failure. Unit warranty will

not be affected.

7. Use of a field-supplied motor may affect wiring size. Contact your Carrier

representative for details.

UNIT

48TJ

016

020

024

028

Table 20 -- Air Quantity Limits

MINIMUM

COOLING

CFM

4500

5400

6000

7000

MINIMUM

HEATING CFM

Low Heat High Heat

3800 3800

4750 5450

MAXIMUM

CFM

7,500

9,000

10,000

11,250

Table 21 -- Accessory/FlOP Static Pressure*

(in. wg) -- 48TJ016

4500 CFM

COMPONENT 5000 6000 7200 7500

Economizer 0.04 0.05 0.07 0.09 0.10

LEGEND

FlOP -- Factory-Installed Option

*The static pressure must be added to external static pressure. The sum and the

evaporator entering-air cfm should then be used in conjunction with the Fan Per-

formance tables to determine blower rpm and watts.

Table 22 -- Accessory/FlOP Static Pressure*

(in. wg) -- 48TJ020-028

CFM

COMPONENT 5000 6000 7200 9000 10,000 I 11,250

Economizer 0.06 0.07 0.09 0.11 0.12 I 0.14

LEGEND

FlOP -- Factory-Installed Option

*The static pressure must be added to external static pressure, The sum and the

evaporator entering-air cfm should then be used in conjunction with the Fan Perfor-

mance tables to determine blower rpm and watts.

Table 23 -- MoistureMi$er TM Dehumidification

Package Static Pressure Drop (in. wg)

UNIT SIZE

48TJ016

48TJ020

48TJ024

48TJ028

UNIT NOMINAL

TONS

300

.040

.058

.071

.111

CFM PER TON

4OO

.071

.102

.126

.197

500

.111

.160

.197

.308

Table 24 -- Fan Rpm at Motor Pulley Settings*

UNIT MOTOR PULLEY TURNS OPEN

48TJ 0lr2 1 11/2 22112 3 31/2 4 41/2 5 5112 6

016 (208/230, 460 v)t tt tt 1179 1150 1121 1093 1064 1035 1006 978 949 920 891

016 (208/230, 460 v)** 1-t 1-t 1559 1522 1488 1455 1422 1389 1356 1323 1289 1256 1227

016 (575 v)l" 1-t 1-t 1429 1403 1376 1349 1323 1296 1269 1242 1215 1188 1159

0201" 1-t 1-t 1095 1077 1058 1040 1021 1002 984 965 947 928 910

020** tt 1-t 1287 1265 1243 1222 1200 1178 1156 1134 1112 1091 1069

0241" 1-t 1-t 1225 1209 1187 1165 1143 1120 1098 1076 1053 1031 1002

024** tt 1-t 1456 1434 1407 1381 1354 1326 1301 1275 1246 1222 1193

0281" 1-t 1-t 1283 1269 1247 1225 1203 1182 1160 1136 1116 1095 1066

028** 1-t 1-t tl- tl- 1551 1524 1497 1470 1443 1415 1386 1361 1332

*Approximate fan rpm shown. NOTE: For speeds not listed above, field-supplied drives are

l-Indicates standard drive package, required.

**Indicates alternate drive package.

ttDue to belt and pulley size, pulley cannot be set to this number of

turns open.

UNIT UNIT

48TJ VOLTAG E

208/230

016 460

575

208/230

020 460

575

208/230

024 460

575

208/230

028 460

575

LEGEND

BHP -- Brake Horsepower

BkW -- Brake Kilowatts

Table 25 -- Evaporator-Fan Motor Data

MAXIMUM MAXIMUM MAXIMUM

ACCEPTABLE ACCEPTABLE ACCEPTABLE

CONTINUOUS BHP* CONTINUOUS BkW* OPERATING WATTS

4.25 3.17 3,775

3.45 2.59 3,065

5.90 4.40 5,180

8.70 6.49 7,915

9.50 7.08 8,640

8.70 6.49 7,915

10.20 7.61 9,510

11.80 8.80 11,000

10.20 7.61 9,510

*Extensive motor and electrical testing on these units ensures that the full horsepower (brake kilowatt)

range of the motors can be utilized with confidence. Using your fan motors up to the horsepower (brake

kilowatt) ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit

warranty will not be affected.

NOTE: All indoor-fan motors 5 hp and larger meet the minimum efficiency requirements as established by

the Energy Policy Act of 1992 (EPACT) effective October 24, 1997.

MAXIMUM

AMP DRAW

10.5

4.8

3.9

15.8

7.9

6.0

22.0

13.0

10.0

28.0

14.6

13.0

Table 26 -- Evaporator-Fan Motor Efficiency

UNIT 48TJ MOTOR EFFICIENCY (%)

016 (3.0 Hp) 81.7

016 (3.7 Hp) 65.6

020 (5 Hp) 67.5

024 (7.5 Hp) 66.5

028 (10 Hp) 69.5

NOTE: All indoor-fan motors 5 hp and larger meet the minimum effi-

ciency requirements as established by the Energy Policy Act of 1992

(EPACT) effective October 24, 1997.

CONDENSER-FANS AND MOTORS -- Condenser fans

and motol.'s am factol T set. Refer to Condenser-Fan Adjustment

section (page 42) as required. Be sure that fans rotate in the

proper direction.

RETURN-AIR FILTERS- Check that correct filtel.s are

installed in filter tracks (see Table 1). Do not operate unit with-

out return-air filters.

OUTDOOR-AIR INLET SCREENS -- Outdoor-air inlet

screens must be in place before operating unit.

GAS HEAT -- Verify gas pressmes before turning on heat as

follows:

1. Turn off manual gas stop.

2. Connect pressure gage to supply gas pressure tap (see

Fig. 13).

3. Connect pressure gage to manifold pressure tap on gas

valve.

4. Turn on manual gas stop and set thermostat to HEAT

position. Adjust set point to several degrees above the

current room temperature to ensure a heat demand. After

the unit has mn for sevend minutes, verify that incoming

pressure is 5.5 in. wg or greater, and that the manifold

pressure is 3.3 in. wg. If manifold pressure must be ad-

justed, refer to Gas Valve Adjustment section on page 43.

5. After unit has been in operation for 5 minutes, check tem-

perature rise across the heat exchangers. See unit infor-

mative plate for correct rise limits of the heat supplied.

Air quantities may need to be adjusted to bring the actual

rise to within the zdlowable limits.

Operating Sequence

COOLING, UNITS WITHOLTT ECONOMIZER -- When

thermostat calls for cooling, terminals G and Y I are energized.

The indoor (evaporator) fan contactor (IF(?_), compressor con-

tactor no. 1 (CI) and outdoor-fan contactor (OFC) are ener-

gized, and evaporator-fan motor, compressor no. 1, and both

condenser fans stall. The condenser-fan motors mn continuous-

ly while unit is cooling. If the thermostat calls for a second stage

of cooling by energizing Y2, compressor contactor no. 2 (C2) is

energized and compressor no. 2 starts.

When the thermostat is satisfied, CI and C2 tue deener-

gized and the compressors and outdoor (condenser) fan motors

(OFM) shut off. After a 30-second delay, the indoor (evapora-

tor) fan motor (IFM) shuts off. If the thermostat fan selector

switch is in the ON position, the evaporator-fan motor will run

continuously.

HEATING. UNITS WITHOUT ECONOMIZER -- When

the thermostat calls for heating, terminal WI is energized. In

order to prevent thermostat short-cycling, the unit is locked

into the Heating mode for at least 1 minute when WI is ener-

gized. The induced-draft motor (IDM) is then energized and

the burner ignition sequence begins. The indoor (evaporator)

fan motor (IFM) is energized 45 seconds after a fame is

ignited. On units equipped for two stages of heat, when addi-

tional heat is needed, W2 is enelgized and the high-fire sole-

noid on the main gas valve (MGV) is energized. When the

thermostat is satisfied and WI and W2 are deenergized, the

IFM stops after a 45-second time-off delay.

COOLING. UNITS WITH ECONOMISERIV -- When free

cooling is not available, the compressol_ will be controlled by

the zone thermostat. When free cooling is available, the

outdoor-air &unper is modulated by the EconoMiSerIV control

to provide a 50 to 55 F supply-air temperature into the zone. As

the supply-air temperature fluctuates above 55 or below 50 IF.

the &lmpers will be modulated (open or close) to bring the

supply-air temperature back within the set point limits.

For EconoMiSerIV operation, there must be a thermostat

call for the fan (G). This will move the damper to its minimum

position during the occupied mode.

Above50Fsupply-airtemperature,thedmnperswillmodu-

latefrom100%opentotheminimumopenposition.From50F

to 45F supply-airtemperature,the&tmperswill maintain

attheminimumopenposition.Below45Fthe&lmperswill

becompletelyshut.Asthesupply-airtemperaturerises,the

damperswillcomebackopentotheminimumopenposition

oncethesupply-airtemperatmerisesto48IF.

If optionalpowerexhaustisinst_dled,astheoutdoor-air

damperopensandcloses,thepowerexhaustfanwillbeener-

gizedanddeenergized.

If field-installed accessory COz sensors are connected to the

EconoMiSerIV control, a demand controlled ventilation strate-

gy will begin to operate. As the CO2 level in the zone increases

above the CO2 set point, the minimum position of the &_mper

will be increased proportionally. As the CO2 level decreases

because of the inclease in fresh aik the outdoor-air damper will

be proportionally closed. Daraper position will follow the high-

er demand condition from DCV mode or free cooling mode.

Damper movement from full closed to lifll open (or vice

veLsa) will take between 11/2and 21/: minutes.

If free cooling can be used as determined from the appropri-

ate changeover command (switch, diy bulb, enthalpy curve,

differential dry bulb, or differential enthalpy), a call for cooling

(YI closes at the thermostat) will cause the control to modulate

the &tmpeLs open to maintain the supply air temperature set

point at 50 to 55 E

As the supply-air temperature diops below the set point

range of 50 to 55 E the control will modulate the outdoor-air

dampers closed to maintain the proper supply-air temperature.

HEATING, UNITS WITH ECONOMISERIV -- When the

room thermostat calls for heat, the heating controls are ener-

gized as described in the Heating, Units Without Economizer

section. When the indoor fan is energized, the economizer

damper moves to the minimum position. When the indoor fan

is off. the economizer dmnper is fully closed.

COOLING. UNITS WITH ECONOMISER2, PREMIER-

LINK TM CONTROL AND A THERMOSTAT -- When free

cooling is not available, the compressoLs will be controlled by

the PremierLink control in response to the YI and Y2 inputs

from the thermostat.

The PremierLink control will use the following information

to determine if free cooling is available:

• Indoor fan has been on for at least 30 seconds.

• The SPT. SAT. and OAT inputs must have valid readings.

• OAT must be less than 75 F.

• OAT must be less than Sir[ '.

• Enthalpy must be LOW (may be jumpered if an enthalpy

sensor not available).

• Economizer position is NOT forced.

Pre-cooling occurs when the is no call fi_m the thermostat

except G Pre-cooling is defined as the economizer modulates

to provide 70 F supply air

When free cooling is available the PremierLink control will

control the compressors and economizer to provide a supply-

air tempemtme determined to meet the YI and Y2 c_dls from

the thermostat using the following three routines. The three

control routines are based on OAT.

The 3 routines ;ue based on OAT where:

SASP = Supply Air Set Point

DXCTLO = Dilect Expansion Cooling Ix_ckout Set Point

PID = Proportional Integral

Routine 1 (OAT < DXCTLO)

YI energized - economizer maintains a SASP =

(SATLOI + 3).

Y2 energized - economizer maintains a SASP =

(SATLO2 + 3).

Routine 2 (DXCTLO < OAT < 68 F)

• If only YI energized, the economizer maintains a SASP

= (SATLOI + 3).

• If SAT > SASP + 5 and economizer position > 80%,

economizer will go to minimum position for 3 minutes or

until SAT > 68 IF.

• First stage of mechanical cooling will be energized.

• Integrator resets.

• Economizer opens again and controls to current SASP

after stage one on for 90 seconds.

• With YI and Y2 energized economizer maintains an

SASP = SATLO2 + 3.

• If SAT > SASP + 5 and economizer position >80%,

economizer will go to minimum position for 3 minutes or

until SAT > 68 E

• If compressor one is on then second stage of mechanical

cooling will be energized. Otherwise the first stage will

be energized.

• Integrator resets.

• Economizer opens again and controls to SASP after

stage one on for 90 seconds.

Routine 3 (OAT > 68)

• Economizer is opened 100%.

• Compressors 1 and 2 are cycled based on YI and Y2

using minimum on and off times and watching the sup-

ply air temperature as compared to SATLOI and

SATLO2 set points.

If optiomd power exhaust is installed, as the outdoor-air

&tmper opens and closes, the power exhaust fans will be ener-

gized and deenergized.

If field-installed accessory CO2 sensors me connected to the

PremierLink control, a PlD-controlled demand ventilation

strategy will begin to operate. As the CO2 level in the zone

increases above the CO2 set point, the minimum position of the

&_mper will be increased proportionally. As the COz level

decreases because of the increase in fresh air, the outdoor-air

&tmper will be proportionally closed.

HEATING, UNITS WITH ECONOMISER2, PREMIERLINK

CONTROL AND A THERMOSTAT -- When the thermostat

calls for heating, terminal Wl is energized. The PremierLink

control will move the economizer damper to the minimum

position if there is a call for G and closed if there is a call for

WI without G In order to prevent thermostat from short cy-

cling, the unit is locked into the heating mode for at least

10 minutes when WI is energized. The induced-di'aft motor is

then energized and the burner ignition sequence begins.

On units equipped for two stages of heat, when additional

heat is needed, W2 is energized and the high-fire solenoid on

the main gas valve (MGV) is energized. When the thermostat

is satisfied and WI is deenergized, the IFM stops after a

45-second time-off delay unless G is still maintained.

COOLING, UNITS WITH ECONOMISER2, PREMIER-

LINK CONTROL AND A ROOM SENSOR -- When free

cooling is not available, the compressors will be controlled by

the PremierLink controller using a PID Enor reduction calcula-

tion as indicated by Fig. 46.

The PremierLink controller will use the following informa-

tion to determine if free cooling is available:

• Indoor fan has been on for at least 30 seconds.

• The SPT. SAT. and OAT inputs must have valid readings.

• OAT must be less than 75 E

• OAT must be less than SPT.

• Enthalpy must be LOW (may be jumpered if and

enthalpy sensor is not available).

• Economizer position is NOT forced.

When free cooling is available, the outdoor-air damper is

positioned through the use of a Proportional Integral (PID)

control process to provide a calculated supply-air temperature

intothezone.Thesupplyairwillmaintainthespacetempera-

turebetweentheheatingandcoolingsetpointsasindicatedin

Fig.47.

ThePremierLinkTM will integrate the compressol_ stages

with the economizer based on similar logic as the three routines

listed in the previous section. The SASP will float up and down

based on the error reduction calculations that compare space

temperature and space set point.

When outdoor-air temperature conditions require the econo-

mizer to close for a compressor stage-up sequence, the econo-

mizer control integrator is reset to zero after the stage-up se-

quence is completed. This prevents the supply-tOT temperature

from &'opping too quickly and creating a freeze condition that

would make the compressor turn off prematurely.

The high space set point is used for DX (direct expansion)

cooling control, while the economizer space set point is a

c:dculated value between the heating and cooling set points.

The economizer set point will always be at least one degree

below the cooling set point, allowing for a smooth transition

from mechanical cooling with economizer assist, back to

economizer cooling as the cooling set point is achieved.

The compressors may be used for initkd cooling then the

PremierLink controller will modulate the economizer using an

enor reduction calculation to hold the space temperature

between the heating and cooling set points. See Fig. 47.

The controller uses the following conditions to determine

economizer cooling:

• Enthalpyis Low

• SAT reading is available

• OAT reading is available

• SPT reading is available

• OAT < SPT

• Economizer Position is NOT forced

If any of the above conditions me not met, the economizer

submaster reference (ECSR) is set to maximum limit and the

dmnper moves to minimum position. The operating sequence

is complete. The ECSR is recalculated every 30 seconds.

If an optional power exhaust is inst:dled, as the outdoor-air

dmnper opens and closes, the power exhaust fans will be

energized and deenergized.

If field-installed accessory CO2 sensors are connected to

the PlemierLink control, a PID-controlled demand ventilation

strategy will begin to operate. As the CO2 level in the zone

increases above the CO2 set point, the minimum position of the

dmnper will be increased proportionally. As the CO2 level

decreases because of the increase in fresh all: the outdoor-air

dalnper will be proportionally closed.

HEATING. UNIT WITH ECONOMI$ER2, PREMIERLINK

CONTROL AND A ROOM SENSOR -- Every 40 seconds

the controller will calculate the required heat stages (maximum

of 3) to maintain supply air temperature (SAT) if the following

qualifying conditions are met:

• Indoor fan has been on for at least 30 seconds.

• COOL mode is not active.

• OCCUPIED, TEMRCOMPENSATED START or HEAT

mode is active.

• SAT reading is available.

• Fire shutdown mode is not active.

If all of the above conditions m'e met, the number of heat

stages is c_dculated; otherwise the required number of heat

stages will be set to 0.

If the PremierLink controller detemfines that heat stages are

required, the economizer dalnper will be moved to minimum

position if occupied and closed if unoccupied.

Staging should be as follows:

If Heating PID STAGES=2

• HEAT STAGES=I (75% capacity) will energize HSI

• HEAT STAGES=2 (100% capacity) will energize HS2

In order to prevent short cycling, the unit is locked into the

Heating mode forat least 10 minutes when HSI is deenergized.

When HSI is energized the induced-di'aft motor is then

energized and the burner ignition sequence begins. On units

equipped for two stages of heat, when additional heat is need-

ed, HS2 is energized and the high-fire solenoid on the main gas

valve (MGV) is energized. When the space condition is satis-

fied and HSI is deenergized the IFM stops after a 45-second

time-off delay unless in the occupied mode. The fan will run

continuously in the occupied mode as lequired by nafiomd

energy and fiesh air standards.

TEMPERATURE CONTROL

w75,

•_ 73

w 72 ............................................... """ SET POINT

2: 71 -- TEMPERATURE

_- 70

694

cO 68J

TIME

NOTE: PremierLink control performs smart staging of 2 stages of DX

cooling and up to 3 stages of heat.

Fig. 46 -- DX Cooling Temperature

Control Example

TEMPERATURE CONTROL

741_ "

72 ......... _ .................................... ------ COOL SETPOINT

71 t _ /j X_"_H%_,_-_'- -- TEMPERATURE

704 ........ _ .......................... -- - HEAT SETPOINT

TIME

Fig. 47 -- Economizer Temperature

Control Example

SERVICE

Before performing service or maintenance operations on

unit, turn off main power switch to unit and install lockout

tag on disconnect switch. Electrical shock could cause per-

sonal injury.

Cleaning- Inspect unit interior at beginning of each

heating and cooling season and as operating conditions require

(see Fig. 48). Remove unit top panel and/or side panels for ac-

cess to unit interioc

COIL MAINTENANCE AND CLEANING RECOMMEN-

DATION -- Routine cleaning of coil surfaces is essential to

maintain proper operation of the unit. Elimination of contmni-

nation and remowd of harmful residues will greatly increase

the life of the coil and extend the life of the unit. The following

maintenance and cleaning procedures are recommended as part

of the routine maintenance activities to extend the life of the

coil.

INDUCED DRAFT INTEGRATED GAS

MOTOR UNIT CONTROLLER

(HIDDEN)

VIEW CONTROL BOX

PORT ACCESS PANEL

ilGC

FAULT

COMBUSTION MAIN BURNER FLUE BOX MAIN GAS

FAN HOUSING SECTION COVER VALVE

Fig. 48 -- Typical Gas Heating Section

Remove Surface Loaded Fibers -- Surface loaded fibers or

dirt should be removed with a vacuum cleanel: If a vacuum

cleaner is not available, a soft non-metallic bristle brush may

be used. In either case, the tool should be applied in the direc-

tion of the fins. Coil surfaces can be easily &_maged (fin edges

can be easily bent over graddamage to the coating of a protect-

ed coil) if the tool is applied across the fins.

NOTE: Use of a water stream, such as a garden hose, against a

surface loaded coil will drive the fibers and diri into the coil.

This will make cleaning efforts morn difficult. Surface loaded

fibeL'smust be completely removed prior to using low velocity

clean water nnse.

Periodic Clean Water Rinse --A periodic clean water rinse is

veUbeneficial for coils that am applied in coastal or industrial

environments. HoweveL it is very important that the water

rinse is made with veqlow velocity water stream to avoid

damaging the fin edges. Monthly cleaning as described below

is recommended.

Routine Cleaning of Coil Surfaces -- Monthly cleaning with

Totaline® environmentally sound coil cleaner is essential to

extend the life of coils. This cleaner is available from Cmrier

Replacement parts division as part number P902-0301 for a

one gallon containel; and pmt number lX)02-0305 for a 5 gallon

containel: It is recommended that all coils, including stan&trd

aluminum, pro-coated, copper/copper or E-coated coils be

cleaned with the Totaline environmentally sound coil cleaner

as described below. Coil cleaning should be part of the unit's

reguhuty scheduled maintenance procedures to ensure long life

of the coil. Failure to clean the coils may result in reduced du-

rability in the environment.

Avoid the use of:

• Coil brighteners

• Acid cleaning prior to painting

• High pressure washers

• Poor quality water for cleaning

Totaline environmentally sound coil cleaner is non-flamma-

ble, hypoallergenic, nonbacterial, and a USDA accepted biode-

gradable agent that will not harm the coil or surrounding com-

ponents such as electrical wiring, painted metal surfaces, or in-

sulation. Use of non-recommended coil cleaners is strongly

discouraged since coil and unit durability could be affected.

Totaline Environmentally Sound Coil Cleaner Al)l)lRz_tion

Equipment

• 21/2 gallon garden sprayer

• Water rinse with low velocity spray nozzle

Harsh chemicals, household bleach or acid or basic clean-

ers should not be used to clean outdoor or indoor coils of

any kind. These cleaners can be very difficult to rinse out

of the coil and can accelerate corrosion at the fin/tube inter-

face where dissimilar materials are in contact. If there is

dirt below the surface of the coil, use the Totaline environ-

mentally sound coil cleaner as described above.

High velocity water fi'om a pressure washeL garden hose,

or compressed air should never be used to clean a coil. The

force of the water or air jet will bend the fin edges and

increase airside pressure drop. Reduced unit performance

or nuisance unit shutdown may occm:

Totaline Environmentally Sound Coil Cleaner Al)l)fi{zaion

Instructions

1. Proper eye protection such as safety glasses is recom-

mended during mixing and application.

2. Remove all surface loaded fibers and dirt with a vacuum

cleaner as described above.

3. Thoroughly wet finned surfaces with clean water and a

low velocity garden hose, being careful not to bend fins.

4. Mix Totaline environmentally sound coil cleaner in a

2V2 gallon gmden sprayer according to the instructions

included with the cleanel: The optimum solution temper-

ature is 100E

NOTE: Do NOT USE water in excess of 130 F. as the enzy-

matic activity will be destroyed.

5. Thoroughly apply Totaline environmentally sound coil

cleaner solution to all coil surfaces including finned area,

tube sheets and coil headers.

6. Hold garden sprayer nozzle close to finned areas and ap-

ply cleaner with a vertical, up-and-down motion. Avoid

spraying in horizontal pattern to minimize potential for

fin damage.

7. Ensure cleaner thoroughly penetrates deep into finned

gueas.

8. Interior and exterior finned meas must be thoroughly

cleaned.

9. Finned surfaces should remain wet with cleaning solution

for 10 minutes.

10. Ensure surfaces are not allowed to &y before rinsing.

Reapplying cleaner as needed to ensure 10-minute satura-

tion is achieved.

11. Thoroughly rinse _dl surfaces with low velocity clean

water using downward rinsing motion of water spray

nozzle. Protect tins from &_mage from the spray nozzle.

CONDENSATE DRAIN- Check and clean each year at

sttut of cooling season. In wintel, keep &ains and traps dry.

During periods of low outdoor temperatures, add anti-freeze

solution to the drain to prevent freeze up. Follow _dl precau-

tions on anti-freeze labeling.

FILTERS -- Clean or replace at start of each heating and cool-

ing season, or more often if operating conditions require. Refer

to Table 1 for type and size.

OUTDOOR-AIR INLET SCREENS -- Clean screens with

steam or hot water and a mild detergent. Do not use throwaway

filteL's in place of screens. See Table 1 for quantity and size.

MAIN BURNER -- At the beginning of each heating season,

inspect for deterioration or blockage due to corrosion or other

causes. Observe the main burner flames. Refer to Main Burn-

eLs section on 43.

FLUE GAS PASSAGEWAYS -- The flue collector box and

heat exchanger cells may be inspected by removing heat ex-

changer access panel (see Fig. 4 and 5), flue box cover, and

main burner assembly. Refer to Main Burners section on

page 43 for burner removal sequence. If cleaning is required,

remove heat exchanger baffles and clean tubes with a wire

brush.

Use caution with ceramic heat exchanger baffles. When in-

st_dling retaining clip, be sure the center leg of the clip extends

inward toward baffle. See Fig. 49.

CERAMIC

BAFFLE

CLIP_

HEAT EXCHANGER

TUBES

NOTE: One baffle and clip will be in each upper tube of the heat

exchanger.

Fig. 49 -- Removing Heat Exchanger Ceramic

Baffles and Clips

COMBUSTION-AIR BLOWER -- Clean periodically to as-

sure proper airflow and heating efficiency. Inspect blower

wheel evely fall and periodically during heating season. For the

fiLst heating season, inspect blower wheel bi-monthly to deter-

mine proper cleaning frequency.

To inspect blower wheel, remove heat exchanger access

panel. Shine a flashlight into opening to inspect wheel. If clean-

ing is required, remove motor and wheel assembly by remov-

ing screws holding motor mounting plate to top of combustion

fan housing. The motor and wheel assembly will slide up and

out of the fan housing. Remove the blower wheel from the mo-

tor shaft and clean with a detergent or solvent. Replace motor

and wheel assembly.

Lubrication

COMPRESSORS- Each compressor is ch_uged with the

correct amount of oil at the factory. Conventional white oil

(Sontext 200LT) is used. White oil is compatible with 3GS oil,

and 3GS oil may be used if the addition of oil is required. See

compressor nameplate for origimd oil charge. A complete re-

ch_uge should be four ounces less than the origimd oil charge.

When a compressor is exchanged in the field it is possible that

a major portion of the oil from the replaced compressor may

still be in the system. While this will not affect the reliability of

the replacement compressor, the extra oil will add rotor drag

and increase power usage. To remove this excess oil, an access

valve may be added to the lower portion of the suction line at

the inlet of the compressol: The compressor should then be mn

for 10 minutes, shut down, and the access valve opened until

no oil flows. This should be repeated twice to make sure the

proper oil level has been achieved.

FAN SHAFT BEARINGS -- For size 016 units, bearings are

permanently lubricated. No field lubrication is required. For

size 020-028 units, lubricate bearings at least every 6 months

with suitable bearing grease. Extended grease line is provided

for far side fan bearing (opposite drive side). Typical lubricants

are given below:

MANUFACTURER LUBRICANT

Texaco Regal AFB-2*

Mobil Mobilplex EP No. 1

Sunoco Prestige 42

Texaco Multifak 2

*Preferred lubricant because it contains rust and oxidation inhibitors.

CONDENSER AND EVAPORATOR-FAN MOTOR

BEARINGS -- The condenser-fan and evaporator-fan motors

have permanently sealed bearings, so no field lubrication is

necessaq.

Evaporator Fan Performance Adjustment

(Fig. 50-52) -- Fan motor pulleys are factory set for speed

shown in Table 1.

To change fan speeds:

1. Shut off unit power supply.

2. a. Size 016 Only: Loosen belt by loosening carriage

nuts holding motor mount assembly to fan scroll

side plates (A and B).

b. Size 020-028 Only: Loosen nuts on the 2 carriage

bolts in the motor mounting base. Install jacking

bolt and plate under motor base (bolt and plate are

shipped in installer's packet). Using bolt and plate,

raise motor to top of slide and remove belt. Secure

motor in this position by tightening the nuts on the

carriage bolts.

3. Loosen movable-pulley flange setscrew (see Fig. 50).

4. Screw movable flange toward fixed flange to increase

speed and away from fixed flange to decrease speed. In-

creasing fan speed increases load on motor Do not ex-

ceed maximum speed specified in Table 1.

See Table 20 for air quantity limits.

5. Set movable flange at netuest keyway of pulley hub and

tighten setscrew. (See Table 1 for speed change for each

full turn of pulley flange.)

6. Replace and tighten belts. See Belt Tension Adjustment

section on page 42.

To align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley _dong fan shaft.

3. Make angular alignment by loosening motor from

mounting plate.

Evaporator Fan Service and Replacement

48TJ016 UNITS (See Fig. 51 )

NOTE: To lemove belts only. follow Steps 1-6.

1. Remove filter and supply-air section panels.

2. Remove unit top panel.

3. Loosen carriage nuts A and B holding motor mount

assembly to fan scroll side plates.

4. Loosen screw C.

5. Rotate motor mount assembly (with motor attached) as

far as possible away from evaporator coil.

6. Remove belt.

7. Rotate motor mount assembly back past original position

toward evaporator coil.

8. Remove motor mounting nuts D and E (both sides).

9. Lift motor up through top of unit.

10. Reverse above procedure to leinstall motol:

11. Check and adjust belt tension as necessary.

48TJ020-028 UNITS (See Fig. 52) -- The 48TJ020-028 units

use a fan motor mounting system that features a slide-out

motor mounting plate. To replace or service the motor, slide

out the bracket.

1. Remove the evaporator-fan access panel and the heat-

ing control access panel.

2. Remove the center post (located between the evaporator

fan and heating control access panels) and all screws

securing it.

3. Loosen nuts on the 2 carriage bolts in the motor mounting

base.

4. Using jacking bolt under motor base, raise motor to top of

slide and remove belt. Secure motor in this position by

tightening the nuts on the cturiage bolts.

5. Remove the belt drive.

6. Remove jacking bolt and tapped jacking bolt plate.

7. Remove the 2 screws that secure the motor mounting

plate to the motor support channel.

8. Remove the 3 screws from the end of the motor support

channel that interfere with the motor slide path.

SECOND BELT

ON 10 HP MOTOR

ONLY

j,MOTOR

MOTOR UNIT TOP PANEL

PULLEY D A

FAN

PULLEY

FAN SCROLL

SIDE PLATES

DRAIN

CONNECTION

Fig. 51 -- 48TJ016 Evaporator-Fan

Motor Adjustment

FAN PULLEY_

BELT,

STRAIGHTEDGE MUST

PARALLEL

WITH BELT

MOTOR PULLEY

PULLEY ENSURE PROPER

CLEARANCE BETWEEN

BELT(_ AND FAN

.SUPPORT NOTCH

PULLEY MOTOR AND FAN

\ SHAFTS MUST BE

PARALLEL

MOVABLE

FLANGES

SETSCREWS

FIXED FLANGE

SINGLE-GROOVE

SLIDING MOTOR

PLATE

MOTOR

PLATE

-JACKING PLATE

MOTOR SUPPORT

CHANNEL JACKING BOLT

NOTE: A 31/2-in. bolt and threaded plate are included in the

installer's packet. They should be added to the motor support chan-

nel below the motor mounting plate to aid in raising the motor. The

plate part number is 50DP503842. The adjustment bolt is 3/8-16 x

13/4 in. LG.

Fig. 52 -- 48TJ020-028 Evaporator-Fan

Motor Section

Fig. 50 -- Evaporator-Fan Pulley and Adjustment

9. Slide out the motor and motor mounting plate.

10. Disconnect wiring connections and remove the 4 mount-

ing bolts.

11. Remove the motol:

12. To inst;dl the new motor, revel.se Steps 1-11.

Belt Tension Adjustment -- To adjust belt tension:

1. Loosen fan motor bolts.

2. a Size 016 Units:

Move motor mounting plate up or down for proper

belt tension (1/2 in. deflection with one finger).

b. Size 020-028 Units:

Turn motor jacking bolt to move motor mounting

plate up or down for propel belt tension (3/8 in.

deflection at midspan with one finger [9 lb force]).

3. Tighten nuts.

4. Adjust bolts and nut on mounting plate to secure motor in

fixed position.

Condenser-Fan Adjustment

48TJ01 (7,020 UNITS (Fig. 53)

1. Shut off unit power supply.

2. Remove access panel(s) closest to the fan to be adjusted.

3. Ix)osen fan hub setscrews.

4. Adjust fan height on shaft using a strtdghtedge placed

across the fan orifice.

5. Tighten setscrews and replace panel(s).

6. Turn on unit powec

48TJ024,028 UNITS (Fig. 54)

1. Shut off unit power supply.

2. Remove fan top-grille assembly and loosen fan hub

screws.

3. Adjust fan heigN on unit, using a straightedge placed

across the Nn orifice.

4. Tighten setscrews and replace rubber hubcap to prevent

hub from rusting to motor shaft.

5. Fill hub recess with permagum if robber hubcap is

missing.

Power Failure -- Dampers have a spring return. In event

of power failme, dampers will return to fully closed position

until power is restored. Do not manual@ ol)eraw economizer

mo_ol_

Refrigerant Charge -- Amount of refligerant chmge is

listed on unit nameplate and in Table 1. Refer to Carrier

_f =....N

NOTE: Dimensions are in inches.

Fig. 53 -- Condenser Fan Adjustment, 48TJ016,020

RAIN

SHIELD

NOTE: Dimensions are in inches.

Fig. 54 -- Condenser-Fan Adjustment, 48TJ024,028

GTAC II; Module 5; Charging, Recovery. Recycling, and

Reclamation section for chguging methods and procedures.

Unit panels must be in place when unit is operating during

chguging procedure.

NOTE: Do not use recycled refrigerant as it may contain

contaminants.

NO CHARGE -- Use standard evacuating techniques. After

ewtcuating system, weigh in the specified amount of refriger-

ant (refer to Table 1).

LOW CHARGE COOLING -- Using cooling charging chart

(see Fig. 55), add or remove refrigerant until conditions of the

chart are met. Note that ch_uging ch_ut is different from those

nominally used. An accurate pressure gage and temperature-

sensing device is required. Charging is accomplished by ensur-

ing the proper amount of liquid sub-cooling. Measure liquid

line pressure at the liquid line service valve using pressure

gage. Connect temperature sensing device to the liquid line

ne;u the liquid line service valve and insulate it so that outdoor

ambient temperature does not affect reading.

TO USE THE COOLING CHARGING CHART -- Use the

above temperature and pressure readings, and find the intersec-

tion point on the cooling charging chin1. If intersection point

on chart is above line, add refrigerant. If intel.section point on

chtut is below line, carefully recover some of the charge.

Recheck suction pressure as charge is adjusted.

NOTE: Indoor-air cfm must be within normal operating range

of unit. All outdoor fans must be operating.

The TXV (thermostatic expansion valve) is set to maintain

between 15 and 20 degrees of supefl]eat at the compressors.

The valves are factory set and should not require re-adjustment.

MOISTUREMISER TM SYSTEM CHARGING -- The sys-

tem charge for units with the MoistureMiSer option is greater

than that of the standard unit _done. The chtuge for units with

this option is indicated on the unit nameplate &awing. To

chm:ge systems using the MoistureMiSer dehumidification

package, fully evacuate, recover, and re-chtuge the system to

the nameplate specified charge level. To check or adjust

refrigerant charge on systems using the MoistureMiSer dehu-

midification package, charge per the standard subcooling

chtuts. The subcooler MUST be deenergized to use the chalg-

ing chmts. The charts reference a liquid pressure (psig) and

temperature at a point between the condenser coil and the sub-

cooler coil. A tap is provided on the unit to measure liquid

pressure entering the subcooler (leaving the condenser).

BOTH CIRCUITS

ALL OUTDOOR FANS MUST BE OPERATING

_140,

_12°1I I 'Abd_HAR'G'E'I_AB'Ot/&CORV'E

Illll lllllllll llllll i

soolillilillilili ililli I

IIIIIIIIIIIIIIIIII1 t"

011111111IIIIIIIIJ,Z'II

lili ilili iliiJZliliiI

III II III IIJZI"I4Eb6&&&.'ARGE,FBELowCURVE

LU 60 IIIIIIIL/IIII

III1 11 III

50 100 150 200 250 300 350 400

LIQUID PRESSURE AT LIQUID VALVE (PSIG)

Fig. 55- Cooling Charging Chart

Gas Valve Adjustment

NATURAL GAS- The gas valve ()pens and closes in re-

sponse to the thermostat or limit control.

When power is supplied to valve terminals DI and C2, the

m;dn v_dve opens to its preset position.

The regular factory setting is stamped on the v;dve body

(3.3 in. wg).

To adjust regulator:

1. Set thermostat at setting for no call for heat.

2. Turn main gas valve to OFF position.

3. Remove l/s-in, pipe plug from manifold or gas v;dve

pressure tap connection. Install a suitable pressure-

measuring device.

4. Set main gas valve to ON position.

5. Set thennostat at setting to call for heat.

6. Remove screw cap covering regulator adjustment sclew

(see Fig. 56).

7. Turn adjustment screw clockwise to increase pressure or

counterclockwise to decrease pressure.

8. Once desired pressure is established, set thermostat set-

ting for no call for heat, turn off main gas valve, remove

pressure-measuring device, and replace I/s-in. pipe plug

and screw cap.

REGULATOR

..-----"ADJUSTMENT

SCREW

(REMOVE

COVER)

Fig. 56 -- Gas Valve

Main Burners -- For all applications, main burners are

factory set and should require no adjustment.

MAIN BURNER REMOVAL

1. Shut off (field-supplied) manual main gas v;dve.

2. Shut off power to unit.

3. Remove unit control box access panel, burner section ac-

cess panel, and center post (see Fig. 4 and 5).

4. Disconnect gas piping from gas valve inlet.

5. Remove wires from gas valve.

6. Remove wires from rollout switch.

7. Remove sensor wire and ignitor cable from [GC board.

8. Remove 2 screws securing manifold bracket to basepan.

9. Remove 2 screws that hold the burner support plate

flange to the vestibule plate.

10. Lift burner assembly out of unit.

CLEANING AND ADJUSTMENT

1. Remove burner rack from unit as described in Main

Burner Removal section above.

2. Inspect burners, and if dirty, remove burners fiom rack.

3. Using a soft brush, clean burners and crossover port as

required.

4. Adjust spark gap. See Fig. 57.

5. Reinst_dl burners on rack.

6. Reinstall burner rock as described above.

Filter Drier- Replace whenever refrigerant system is

exposed to atmosphere.

Protective Devices

COMPRESSOR PROTECTION

Phase Protection -- On 48TJ016 and 020 units, the phase

monitor relay (PMR) will monitor the sequence of the 3-phase

electric_d system to provide phase reversal protection. The

PMR will also monitor the 3-phase voltage inputs to provide

phase loss protection for the 3-phase device.

Overcurrent -- Each compressor has internal line break motor

protection, except the circuit no. 1 on the 48TJ028 units. Com-

pressor no. 1 on the 48TJ028 unit uses an electronic module,

located with the compressor junction box, to provide motor

protection. This electronic module monitors winding and dis-

chtuge temperatures. If these temperatures reach the trip val-

ues, the module interrupts the control line and causes the

compressor to switch off.

Crankcase Heater -- Only the 48TJ028 unit and units with

optional MoistureMiSer TM dehumidification system are

equipped with a 70-watt crankcase heater to prevent absorption

of liquid refrigerant by oil in the crankcase when the compres-

sor is idle. The crankcase heater is energized whenever there is

a main power to the unit and the compressor is not energized.

IIMPORTANT: After a prolonged shutdown or servicing, I

energize the crankcase heaters for 24 houLs before stmt- I

ing the compressors.

Compressor Lockout -- If any of the safeties (high-pressure,

low-pressure, freeze protection thermostat, compressor internal

thermostat) trip, or if there is loss of power to the compressors,

the cooling lockout (CLO) will lock the compressors off. To

reset, manually move the thermostat setting.

EVAPORATOR-FAN MOTOR PROTECTION -- A man-

ual reset, calibrated trip, magnetic circuit bleaker protects

against overcurrent. Do not bypass connections or increase the

size of the breaker to correct trouble. Determine the cause and

correct it before resetting the breakel:

CONDENSER-FAN MOTOR PROTECTION -- Each

condenser-fan motor is internally protected against

overtemperature.

HIGH-PRESSURE AND LOW-PRESSURE SWITCHES --

If either switch trips, or if the compressor overtemperature

switch activates, that refrigerant circuit will be automatically

locked out by the CLO. To reset, manually move the thermo-

stat setting.

FREEZE PROTECTION THERMOSTAT (FPT) -- An FPT

is located on the top and bottom of the evaporator coil. They

detect frost build-up and turn off the compressol: allowing the

coil to clem: Once the frost has melted, the compressor can be

reenergized by resetting the compressor lockout.

Relief Devices -- All units have relief devices to protect

against damage from excessive pressures (i.e., fire). These

devices protect the high and low side.

Control Circuit, 24-7--This control circuit is pro-

tected against overcurrent by a 3.2 amp circuit breakec

Bre;_ker can be reset. If it trips, determine cause of trouble

before resetting. See Fig. 58 and 59 for typical wiring diagram

and component ;urangement.

Replacement Parts -- A complete list of replacement

parts may be obtained from any Carrier distributor upon

request.

Diagnostic IGC Control LEDs-- The IGC bom'd

has LEDs for diagnostic purposes. Refer to Troubleshooting

section on page 48.

Optional Hinged Access Doors --When the optional

service package is ordered or the if the hinged access doors

option is ordered, the unit will be provided with external and

internal hinged access dool_ to facilitate service.

Four external hinged access doors are provided. All extern;d

doors _ue provided with 2 large 1/4 turn latches with folding

bail-type handles. (Compressor access doors have one latch.) A

single door is provided for filter and drive access. One door is

provided for control box access. The control box access door is

interlocked with the non-fused disconnect which must be in the

OFF position to open the dool: Two doors are provided for ac-

cess to the compressor compartment.

Two internal access doors are provided inside the filter/

drive access dool: The filter access door (on the left) is secured

by 2 small 1/4 turn latches with folding bail-type handles. This

door must be opened prior to opening the drive access dool:

The &ive access door is shipped with 2 sheet metal screws

holding the door closed. Upon initial opening of the dooL these

screws may be removed and discarded. The door is then held

shut by the filter access door, which closes over it.

SEE

"C"

,@ •

@ @

48TJD016

@ @ @

,@ @

48TJD020-028 AND 48TJF016

o(_o

@o_o @

48TJ F020-028

SPARK GAP .120" TO .140"

1 _RK IAP .181"

DETAIL"C"

Fig. 57 -- Spark Gap Adjustment

A_TO

-k_:,

°AUTO

SCHEMATIC

L_ B _ CAP_

CAP2gff__ gg£ OrMZ

__ __ % -- -- ORN_.._ ,<]D

4i ......

[12® -._

y_4t J® _ .... ,

GROUNOZO

?_RU STAWO0_

IFC

ore

IELD THERMOSTAT....... ___t_tu ! TO _CONO"IZ_R O_IIO"/_CC_SSOR_

"X_,'_ -- O_C,p,wr_P" K |TO gCONOI_IZER OPTIOR/aCCZSSO_y

R D PL1-12

L__o,,-<_o. /

Fig. 58 -- Typical Wiring Schematic (48TJ016, 208/230-V Shown)

LEO

IG¢

COMPONENT ARRANGEMENT

CONTROL BOX 0

®@@

II--_LK

OFMI ,2,3

_Lt,R

•II..Iii ii__ i

IIII

o_, --I I II.=,

GAS SECTION

BtK

2v _Ov

[_pt p_ _x_ [ .........80AeO

[]_" 0

_1011

,IOli

,1Oll

,IOll

PL_

Fig. 59 -- Typical Component Arrangement (48TJ016 Unit Shown)

LEGEND AND NOTES FOR FIG. 58 AND 59

LEGEND

AHA -- Adjustable, Heat Anticipator SN -- Sensor

BKR W/AT -- Breaks with Amp Turns TB -- Terminal Block

C -- Contactor, Compressor TC -- Thermostat Cooling

CAP -- Capacitor TH -- Thermostat Heating

CB -- Circuit Breaker TRAN -- Transformer

CC -- Cooling Compensator

CLO -- Compressor Lockout _ Terminal (Marked)

COMP -- Compressor Motor O Terminal (Unmarked)

DM -- Damper Motor

DU -- Dummy Terminal _ Terminal Block

EQUIP -- Equipment

FPT -- Freeze Protection Thermostat • Splice

FU -- Fuse Factory Wiring

GND -- Ground

HPS -- High-Pressure Switch _ m-- Field Control Wiring

IAQ -- Indoor Air Quality Sensor Accessory or Optional Wiring

IDM -- Induced-Draft Motor

IFM -- Indoor-Fan Motor ......m_ To indicate common potential only;

not to represent wiring.

IGC -- Integrated Gas Unit Controller

L -- Light _ Economizer Motor

LED -- Light Emitting Diode

LPS -- Low-Pressure Switch _ Remote POT Field Accessory

LS -- Limit Switch

MGV -- Main Gas Valve OAT Sensor

NEC -- National Electrical Code

OAT -- Outdoor Air Temperature Sensor _ Disch Air Sensor

OCCUP -- Occupancy Sensor RAT Accessory Sensor

OFC -- Outdoor-Fan Contactor

OFM -- Outdoor-Fan Motor Low Ambient Lockout Switch

PL -- Plug Assembly

PMR -- Phase Monitor Relay

QT -- Quadruple Terminal

RAT -- Return Air Temperature Sensor

RS -- Rollout Switch

NOTES:

1. Compressor and/or fan motor(s) thermally protected three phase motors protected against primary

single phasing conditions.

2. If any of the original wire furnished must be replaced, it must be replaced with Type 90 ° C or its

equivalent.

3. TRAN1 is wired for 230-v operation. If unit is 208 v, disconnect the black wires from the ORN TRAN

wire and reconnect to the RED TRAN wire. Apply wirenuts to wires.

4. CB1,2 Must Trip Amps are equal to or less than 156% FLA. IFCB 140%.

5. The CLO locks out the compressor to prevent short cycling on compressor overload and safety devices;

before replacing CLO check these devices.

6. Jumpers are omitted when unit is equipped with economizer.

7. Number(s) indicates the line location of used contacts. A bracket over (2) numbers signifies a single

pole, double throw contact. An underlined number signifies a normally closed contact. Plain (no line)

number signifies a normally open contact.

8. Remove jumper between RC and RH.

9. 620 Ohm, 1 watt, 5% resistor should be removed only when using differential enthalpy or dry bulb.

10. If a separate field-supplied 24 v transformer is used for the IAQ sensor power supply, it cannot have the

secondary of the transformer grounded.

11. OAT sensor is shipped inside unit and must be relocated in the field for proper operation.

12. For field-installed remote minimum position POT. remove black wire jumper between P and P1 and set

control minimum position POT to the minimum position.

TROUBLESHOOTING

Unit Troubleshooting- Refer to Tables 27-29 and

Fig. 60.

EconoMi$erlV Troubleshooting-- See Table 30

for EconoMi$erlV logic.

A limctional view of the EconoMiSerlV is shown in Fig. 61.

Typic_d settings, sensor ranges, and jumper positions ale also

shown. An EconoMiSerIV simulator program is available from

Ctuder to help with EconoMi$erIV training and troubleshooting.

ECONOMISERIV PREPARATION -- This procedure is

used to prepare the EconoMiSerIV for troubleshooting. No

troubleshooting or testing is done by performing the following

procedure.

NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm

resistol, and a 5.6 kilo-ohln resistor which are not supplied

with the EconoMiSerlV.

[IMPORTANT: Be sure to record the positions of aH poten- ]tiometers before starting troubleshooting.

1. Disconnect power at TR and TRI. All LEDs should be

off. Exhaust fan contacts should be open.

2. Disconnect device at P and PI.

3. Jumper P to PI.

4. Disconnect wires at T and TI. Place 5.6 kilo-ohm resistor

across T and TI.

5. Jumper TR to 1.

6. Jumper TR to N.

7. If connected, remove sensor from termimds So and +.

Connect 1.2 kilo-ohm 4074EJM checkout resistor across

terminals So and +.

8. Put 620-ohm resistor across terminals SR and +.

9. Set minimum position, DCV set point, and exhaust

potentiometers fully CCW (counteMockwise).

10. Set DCV maximum position potentiometer fully CW

(clockwise).

11. Set enthalpy potentiometer to D.

12. Apply power (24 vac) to terminals TR and TRI.

DIFFERENTIAL ENTHALPY-- To check differential

enthalpy:

1. Make sure EconoMiSerIV prep_uation procedure has

been performed.

2. Place 620-ohm resistor across So and +.

3. Place 1.2 kilo-ohm resistor across SR and +. The Free

Cool LED should be lit.

4. Remove 620-ohm resistor across So and +. Tile Free

Cool LED should turn off.

5. Return EconoMiSerIV settings and wiring to normal

after completing troubleshooting.

SINGLE ENTHALPY -- To check single enthalpy:

1. Make sure EconoMiSerIV prepmation procedure has

been performed.

2. Set the enthalpy potentiometer to A (fully CCW). The

Free Cool LED should be lit.

3. Set the enth_flpy potentiometer to D (fully CW). The Free

Cool LED should turn off.

4. Return EconoMiSerlV settings and wiring to normal

after completing troubleshooting.

DCV (Demand Controlled Ventilation) AND POWER

EXHAUST -- To check DCV and Power Exhaust:

1. Make sure EconoMiSerIV prepmation procedure has

been performed.

2. Ensure terminals AQ and AQI _ue open. The LED for

both DCV and Exhaust should be off. The actuator

should be fldly closed.

3. Connect a 9-v battery to AQ (positive node) and AQI

(negative node). The LED for both DCV and Exhaust

should turn on. The actuator should &ive to between 90

and 95% open.

4. Turn the Exhaust potentiometer CW until the Exhaust

LED turns off. The LED should turn off when the

potentiometer is approximately 90%. The actuator should

remain in position.

5. Turn the DCV set point potentiometer CW until the DCV

LED turns off. The DCV LED should turn off when the

potentiometer is approximately 9-v. Tile actuator should

drive fully closed.

6. Turn the DCV and Exhaust potentiometers CCW until

the Exhaust LED turns on. The exhaust contacts will

close 30 to 120 seconds after the Exhaust LED turns on.

7. Return EconoMi$erIV settings and wiring to normal

after completing troubleshooting.

DCV MINIMUM AND MAXIMUM POSITION -- To check

the DCV minimum and maximum position:

1. Make sure EconoMiSerIV preparation procedure has

been perforlned.

2. Connect a 9-v battery to AQ (positive node) and AQI

(negative node). The DCV LED should turn on. The

actuator should drive to between 90 and 95% open.

3. Turn the DCV Maximum Position potentiometer to mid-

point. The actuator should drive to between 20 and 80%

open.

4. Turn the DCV Maximum Position potentiometer to lidly

CCW. The actuator should drive fully closed.

5. Turn the Minimum Position potentiometer to midpoint.

The actuator should drive to between 20 and 80% open.

6. Turn the Minimum Position Potentiometer lully CW. The

actuator should drive fully open.

7. Remove the jumper from TR and N. The actuator should

drive fully closed.

8. Return EconoMiSerIV settings and wiring to norm¢fl

after completing troubleshooting.

SUPPLY-AIR [NPUT -- To check supply-air input:

1. Make sure EconoMiSerIV preparation procedure has

been performed.

2. Set the Enthalpy potentiometer to A. The Free Cool LED

turns on. The actuator should drive to between 20 and

80% open.

3. Remove the 5.6 kilo-ohm lesistor and jumper T to TI.

The actuator should drive fidly open.

4. Remove the jumper across T and TI. The actuator should

drive fully closed.

5. Return EconoMiSerlV settings and wiring to normal

after completing troubleshooting.

ECONOMISER IV TROUBLESHOOTING COMPLE-

TION -- Tiffs procedure is used to return the EconoMiSerIV

to operation. No troubleshooting or testing is done by perform-

ing the following procedure.

1. Disconnect power at TR and TRI.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position potentiometer to previous

setting.

4. Set minimum position, DCV set point, and exhaust

potentiometers to previous settings.

5. Remove 620-ohm resistor fix_m terminals SR and +.

6. Remove 1.2 kilo-ohln checkout resistor from terminals So

and +. If used, reconnect sensor fix_mterminals So and +.

7. Remove jumper from TR to N.

8. Remove jumper from TR to 1.

9. Remove 5.6 kilo-ohm resistor from T and TI. Reconnect

wires at T and TI.

10. Remove jumper from P to PI. Reconnect device at P and

PI.

11. Apply power (24 vac) to termimds TR and TRI.

Table 27 -- Cooling Service Analysis

PROBLEM CAUSE REMEDY

Compressor and Power failure. Call power company.

Condenser Fan Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.

Will Not Start. Defective thermostat, contactor, transformer, or control Replace component.

relay.

Insufficient line voltage. Determine cause and correct.

Incorrect or faulty wiring. Check wiring diagram and rewire correctly.

Thermostat setting too high. Lower thermostat setting below room temperature.

Three phase power incorrectly connected (sizes 016 and Correct field power phasing.

020 only). Indicated by flashing red LED on Phase Moni-

tor Relay (PMR) board (see Control Box Component

Arrangement for location).

Compressor Will Not Faulty wiring or loose connections in compressor circuit. Check wiring and repair or replace.

Start but Condenser Fan Compressor motor burned out, seized, or internal over- Determine cause. Replace compressor.

Runs. load open.

Defective overload. Determine cause and replace.

Compressor locked out Determine cause for safety trip and reset lockout.

One leg of 3-phase power dead. Replace fuse or reset circuit breaker.

Determine cause.

Compressor Cycles Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and recharge

(other than normally to nameplate.

satisfying thermostat). Defective compressor. Replace and determine cause.

Insufficient line voltage. Determine cause and correct.

Blocked condenser. Determine cause and correct.

Defective overload. Determine cause and replace.

Defective thermostat. Replace thermostat.

Faulty condenser-fan motor. Replace.

Restriction in refrigerant system. Locate restriction and remove.

Compressor Operates Dirty air filter. Replace filter.

continuously. Unit undersized for load. Decrease load or increase unit size.

Thermostat set too low. Reset thermostat.

Low refrigerant charge. Locate leak, repair, and recharge.

Air in system. Recover refrigerant, evacuate system, and recharge.

Condenser coil dirty or restricted. Clean coil or remove restriction.

Excessive Head Dirty air filter. Replace filter.

Pressure. Dirty condenser coil. Clean coil.

Refrigerant overcharged. Recover excess refrigerant.

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to

suction line.

2. Replace TXV if stuck open or closed.

Air in system. Recover refrigerant, evacuate system, and recharge.

Condenser air restricted or air short-cycling. Determine cause and correct.

Head Pressure Too Low. Low refrigerant charge. Check for leaks, repair, and recharge.

Restriction in liquid tube. Remove restriction.

Excessive Suction High heat load. Check for source and eliminate.

Pressure. Faulty TXV. 1. Check TXV bulb mounting and secure tightly to

suction line.

2. Replace TXV if stuck open or closed.

Refrigerant overcharged. Recover excess refrigerant.

Suction Pressure Too Dirty air filter. Replace filter.

Low. Low refrigerant charge. Check for leaks, repair, and recharge.

Metering device or low side restricted. Remove source of restriction.

Faulty TXV. 1. Check TXV bulb mounting and secure tightly to

suction line.

2. Replace TXV if stuck open or closed.

Insufficient evaporator airflow. Increase air quantity. Check filter and replace if

necessary.

Temperature too low in conditioned area. Reset thermostat.

Field-installed filter drier restricted, Replace.

LEGEND

TXV -- Thermostatic Expansion Valve

Table 28 -- Heating Service Analysis

PROBLEM CAUSE

Burners Will Not Misaligned spark electrodes.

Ignite.

No gas at main burners.

Water in gas line.

No power to furnace.

No 24 v power supply to control circuit.

Miswired or loose connections.

Burned-out heat anticipator in thermostat.

Broken thermostat wires.

Inadequate Heating, Dirty air filter.

Gas input to unit too low.

Unit undersized for application.

Restricted airflow.

Blower speed too low.

Limit switch cycles main burners.

Too much outdoor air.

Poor Flame

Characteristics. Incomplete combustion (lack of combustion air)

results in:

Aldehyde odors, CO, sooting flame, or floating flame.

Burners Will Not Turn Unit is locked into Heating mode for a one minute

Off. minimum.

Table 29 -- MoistureMi$er TM Dehumidification Subcooler Service Analysis

PROBLEM CAUSE

Subcooler Will Not Energize No power to subcooler control transformer.

REMEDY

Check flame ignition and sensor electrode positioning.

Adjust as needed.

Check gas line for air; purge as necessary. After purging

gas line of air, allow gas to dissipate for at least 5 min-

utes before attempting to relight unit.

Check gas valve.

Drain water and install drip leg to trap water.

Check power supply, fuses, wiring, and circuit breaker.

Check transformer. Transformers with internal overcur-

rent protection require a cool-down period before

resetting. Check 24-v circuit breaker; reset if necessary.

Check all wiring and wire nut connections.

Replace thermostat.

Run continuity check. Replace wires if necessary.

Clean or replace filter as necessary.

Check gas pressure at manifold. Check gas meter for

input. If too low, increase manifold pressure or replace

with correct orifices.

Replace with proper unit or add additional unit.

Clean filter, replace filter, or remove any restrictions.

Install alternate motor, if applicable, or adjust pulley to

increase fan speed.

Check rotation of blower, thermostat heat anticipator set-

tings, and temperature rise of unit. Adjust as needed.

Adjust minimum position.

Check economizer operation.

Check all screws around flue outlets and burner com-

partment. Tighten as necessary.

Cracked heat exchanger.

Overtired unit -- reduce input, change orifices, or adjust

gas line or manifold pressure.

Check vent for restriction. Clean as necessary.

Check orifice to burner alignment.

Wait until mandatory one-minute time period has

elapsed or cycle power to unit.

Subcooler Will Not Deenergize

Low System Capacity

No power from subcooler control transformer to

liquid line three-way valve.

Liquid line three-way valve will not operate.

Liquid line three-way valve will not close.

Low refrigerant charge or frosted coil.

REMEDY

Check power source. Ensure all wire connections

are tight.

1. Fuse open; check fuse. Ensure continuity of wiring.

2. Subcooler control low-pressure switch open.

Cycle unit off and allow low-pressure switch

to reset. Replace switch if it will not close.

3. Transformer bad; check transformer.

1. Solenoid coil defective; replace.

2. Solenoid valve stuck closed; replace.

Valve is stuck open; replace.

1. Check charge amount. See system charging

section.

2. Evaporator coil frosted; check and replace

subcooler control low-pressure switch if necessary.

I_-INDO(:W_FANI)EI.AY J___(HEATING)

2_S - OFmNING OF LIMffSWRCH

3_S -_ 81_813f1

IN_CATES FLAME WITH

CLOSED C:':':':':':':':':_VALVE

4FI.ASI'E8 - LIW_ SWITCH

CYCLED 4 TIMES ON SINGLE

CALL FOR HEAT

(No _ wth_ 15 _)

6FI.ASHES-iNDUCED DRAFT

MOTORFAULT

(NOsigr_ frem f_'_ _ !_t

8enm:,rforB0 mKx_,es)

I 7 _ - OPtENING OFROLLCtrr 8_MICH

SOFTWARE FAULT

I 9 FLASHES - SOFTWARELOCKOUT

I , I

I_ OU113OOR FAN MOTOR

STeEr I_TELY

I. I , ,FOR iNDOOR FAN I

I COOLING DEMAND

OUIDOOR F/M_STOP

IMMEDIATELY

I;GC SAFELY LOGIC WILL SHUT

OFF GAS VALVE AND sPARK

LEGEND

IGC -- Integrated Gas Unit Controller

NOTE: Thermostat Fan Switch in the "AUTO"

position.

--_ OFF YES IGC BOARD

I,BLOWN 5AMP FUSE

2. DEFECTIVE _V TRANS.

& BROKB_ V_IRE

1L & NO POWB_ TO U_T

HEATING

'Wl' FROM BASE CONTROL BOARD ENERGIZES 'W'

ON IGC - 1 MINUTE LOCK-ON

RELAY ON _C BEN_

1__ B_N.o ATCO_-CT_ (ATLEA-__0.P_, _L I

EE--CT 8EN8OR SENDS CORRECT 81GNAL TO _ 'Jf ON K3C

F LIMIT swrrcH AND ROLLOUT

9A,TI'CH ARE CLOSED, IGC _

LOGIC _ INITIATIE IGNITION

SEQUENCE

_ _I"ES A

10,000 Vt3LT 8PN_K FO_ 5

Yes

I _FrER_OONI_(O_LESS.:T_ETI_e I

H_S BEEN R_ D_J_ TO _ 81/_TCH

TRIPS) tGC _MLL B_ERGIZE BLOWISR RELAY

I _3c SAFEW LO_C OPENS GAS

VALVE FOR 5 SEONOS

I_,, s_.._Er_ LO_C_._rsOFF_ VALVE I

I 45 SECOND BLOWER SHUTOFF DELAY I

(DELAY _ BY 5 880OND8 FOR ESE;H UMfr 8w_roH TRP -

MAXIMUM DELAY: 3 MINLrlEs)

SUBTRACT 5 S_CONDS (OR J

5_:CONDS) FROM J

_DOOR F_ ON TIME DE_AY

Fig. 60 -- IGC Control (Heating and Cooling)

Table 30 -- EconoMi$erlV Input/Output Logic

Demand Control

Ventilation (DCV)

Below set

(DCV LED Off)

Above set

(DCV LED On)

INPUTS

Enthalpy* Compressor

Outdoor Return Y1 Y2 Stage Stage

1 2

High Low On On On On

(Free Cooling LED Off) On Off On Off

Off Off Off Off

Low High On On On Off

(Free Cooling LED On) On Off Off Off

Off Off Off Off

High Low On On On On

(Free Cooling LED Off) On Off On Off

Off Off Off Off

Low High On On On Off

(Free Cooling LED On) On Off Off Off

Off Off Off Off

*For single enthalpy control, the module compares

enthalpy to the ABCD set point.

tPower at N terminal determines Occupied/Unoccupied

24 vac (Occupied), no power (Unoccupied).

**Modulation is based on the supply air sensor signal.

1-tModulation is based on the DCV signal.

OUTPUTS

NTerminalt

Occupied

Minimum position

Modulating** (between rain.

position and full-open)

Minimum position

Modulating1-1- (between min.

position and DCV maximum)

Modulating***

Unoccupied

Dam )er

Closed

Modulating** (between

closed and full-open)

Closed

Modulatingtl- (between

closed and DCV

maximum)

Modulatingtl-t

outdoor

setting:

***Modulation is based on the greater of DCV and supply air sensor

signals, between minimum position and either maximum position

(DCV) or fully open (supply air signal).

ttl-Modulation is based on the greater of DCV and supply air sen-

sor signals, between closed and either maximum position (DCV)

or fully open (supply air signal).

Fig. 61 -- EconoMiSerlV Functional View

Altitude compensation lO

Burner spark gap 44

Carrier Comfort Network@ 17

Changeover set points 26

Charging chart, ret_igerant 42

Clearance 5, 6

CO2 sensor

Configuration 28

Settings 27, 29

Combustion blower wheel 40

Compressor

Lubrication 40

Mounting 31

Rotation 31

Concentric duct 9

Condensate drain

Cleaning 40

Location 9, 10

Condenser coil 7

Cleaning 39

Condenser fan 7

Adjustment 42

Control circuit

Wiring 11

Convenience outlet 12

Crankcase heater .31,43

Demand control ventilation 28'

Dehumidification 29

Dimensions 3-6

Ductwork 9

EconoMiSerlV 23-29

Control mode 25

Controller wiring 24

Demand ventilation control 28

Dry bulb changeover 25

Enthalpy sensor 26

Troubleshooting 4& .52

Usage 25

Wiring 24

EconoMi$er2 23, 24

Electrical connections l]

Electrical data 13

Enthalpy changeover set points 27

Error codes 51

Evaporator coil 7

Cleaning 39

Evaporator fan motor

Lubrication 40

Motor data 36

Mounting 41

Performance 32-34

Pulley adjustnlent 41

Pulley setting 7, 35

Speed 7

Filter

Cleaning 40

Size 8

Filter drier 43

Flue collector box 40

Flue gas passageways 40

Flue hood 9

Freeze protection thermostat 8

Gas connection 8

Gas input 8

Gas piping 11

Gas pressure 1, &11

Heat anticipator settings 8, 11

High-pressure switch 8, 43

Hinged access doors 44

Horizontal adapter roof curb 2

Humidistat 29

Indoor air quality sensor 17

Integrated gas controller 51

Error codes 51

Liquid propane 10

Ix_w-pressure switch 8, 43

Main burners 40, 43

Manual outdoor air damper 14

INDEX

MoistureMiSer TM

dehumidification 29-31,3.5,42, 50

Motormaster@ I control 15

Motormaster V control 16

Mounting

Compressor .31

Unit 2

Natnral gas 8,43

Non-fused disconnect 12

Operating limits 16

Operating sequence 36-38

Cooling 36

EconoMi$erlV 36, 37

EconoMi$er2 with

PremierLink TM control 37,38'

Heating 36, 37

Outdoor air hocKt 14

Outdoor air temperature sensor 17,25

Outdoor air inlet screens

Cleaning 40

Dimensions 8

Physical data Z 8

Power supply 11

Wiring 11

PmmierLink controls 17-20

Pressure, drop

Economizer 35

MoistureMi$er 35

Pressure switches

High pressure 8

Low pressure 8

Refrigerant

Charge Z 42

Type 7

Refrigerant selwice ports 31

Replacement parts 43

Return air filter &36

Return air temperature sensor 26

Rigging unit 2,4

Roof curb

Assembly 2

Dimensions 2, 3

Leveling tolerances 2,3

Weight 7

Safety considerations 1

Ser_,ice .39-47

Start-up 31-38

Start-up checklist CL-]

Supply-air temperature sensor 17,25

Thermostat 12

Troubleshooting 48-.52

Weight

Corner .5,,5

EconoMi$erlV 5-7

Maximum 4

Unit 5-7

Wind baffle 15,16

Wiring

EconoMiSerlV 24

EconoMi$er2 24

Humidistat 30

Non-fused disconnect 12

Power connections l]

PremierLink 18,20

Thermostat 12

Unit 4.5,4'5

SERVICE TRAINING

Packaged Service Training programs tue an excellent way to increase your knowledge of the equipment

discussed in this manual, including:

• Unit Familiarization

• [nstallation Overview

• Maintenance

• Opel_ting Sequence

A large selection of pl_duct, theory, and skills programs are available, using popular video-based formats

and materials. All include video and/or slides, plus companion book.

Classroom Service Training which includes "hands-on" experience with the products in our labs can

mean increased confidence that really pays dividends in faster troubleshooting and fewer c_fllbacks. Course

descriptions and schedules tue in our catalog.

CALL FOR FREE CATALOG 1-800-644-5544

] Packaged Selvice Training [] Classroom Service Training

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53480009-01 Printed in U.S.A. Form 48TJ-22SI Pg 54 3-06 Replaces: 48TJ-21SI

START-UP CHECKLIST

MODEL NO.: SERIAL NO.:

DATE: TECHNICIAN:

PRE-START-UP

[] VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

[] VERIFY INSTALLATION OF INDOOR FAN MOTOR ADJUSTMENT BOLT AND PLATE (48TJ020-028 ONLY)

[] VERIFY INSTALLATION OF OUTDOOR-AIR HOOD

[] VERIFY INSTALLATION OF FLUE HOOD AND WIND BAFFLE

[] VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS

[] VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT

[] CHECK GAS PIPING FOR LEAKS

[] CHECK THAT FILTERS AND SCREENS ARE CLEAN AND IN PLACE

[] VERIFY THAT UNIT IS LEVEL

[] CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SETSCREW

IS TIGHT

[] VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED

[] VERIFY THAT SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION

[] VERIFY THAT CRANKCASE HEATER HAS BEEN ENERGIZED FOR 24 HOURS (SIZE 028 AND UNITS WITH

MOISTUREMISER T:'IDEHUMIDIFICATION SYSTEM ONLY)

START-UP

ELECTRICAL

SUPPLY VOLTAGE

COMPRESSOR AMPS COMPRESSOR NO. 1

COMPRESSOR NO. 2

SUPPLY FAN AMPS

LI-L2 L2-L3 L3-LI

LI L2 L3

EXHAUST FAN AMPS

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

RETURN-AIR TEMPERATURE

COOLING SUPPLY AIR

GAS HEAT SUPPLY AIR

F DB (Dry-Bulb)

F DB

F WB (Wet-Bulb)

PRESSURES

GAS INLET PRESSURE

GAS MANIFOLD PRESSURE

REFRIGERANT SUCTION

REFRIGERANT DISCHARGE

IN. WG

STAGE NO. 1 IN. WG

CIRCUIT NO. 1 PSIG

STAGE NO. 2 IN. WG

CIRCUIT NO. 2 PSIG

[] VERIFY REFRIGERANT CHARGE USING CHARGING CHART ON PAGE 42.

GENERAL

[] ECONOMIZERMINIMUMVENTAND CHANGEOVERSETFINGSTOJOB REQUIREMENTS

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 14 Catalog No. 04-53480009-01 Printed in U.S.A. Form 48TJ-22SI Pg CL-1 3-06 Replaces: 48TJ-21Sl

Tab 1a 16a

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Carrier 48Tj016 028 Users Manual

CARRIER Package Units(both units combined) Manual L0606341 CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides

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