Carrier 50Tfq008 012 Users Manual

50TFQ008-012 to the manual 8109643d-3fdb-4527-ae38-6cf01a39272b

2015-01-24

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

Catalog No. 04-53500019-01 Printed in U.S.A. Form 50TFQ-9SI Pg 1 9-05 Replaces: 50TFQ-7SI

Book 1 4

Tab 5a 5 a

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS .........................1

INSTALLATION ...................................1-43

Step 1— Provide Unit Support .......................1

• ROOF CURB

• SLAB MOUNT

• ALTERNATE UNIT SUPPORT

Step 2 — Field Fabricate Ductwork ..................3

Step 3 — Install Condensate Drain Line

and External Trap .................................3

Step 4 — Rig and Place Unit .........................3

• POSITIONING

Step 5 — Make Electrical Connections ..............7

• FIELD POWER SUPPLY

• FIELD CONTROL WIRING

• DEFROST BOARD

• HEAT ANTICIPATOR SETTINGS

Step 6 — Adjust Factory-Installed Options .........12

• DISCONNECT SWITCH

• CONVENIENCE OUTLET

• NOVAR CONTROLS

• MANUAL OUTDOOR-AIR DAMPER

• PREMIERLINK™ CONTROL

• OPTIONAL ECONOMI$ER IV AND ECONOMI$ER2

• ECONOMI$ER IV STANDARD SENSORS

• ECONOMI$ER IV CONTROL MODES

Step 7 — Adjust Indoor-Fan Speed .................25

PRE-START-UP .....................................44

START-UP .......................................44-47

SERVICE ........................................47-49

TROUBLESHOOTING ............................49-53

INDEX ..............................................54

START-UP CHECKLIST .......................... CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should

install, repair, or service air-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 air-conditioning equipment, observe precau-

tions 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 extinguisher available for all brazing operations.

INSTALLATION

Unit is shipped in the vertical configuration. To convert to

horizontal configuration, remove side duct opening covers. Us-

ing the same screws, install covers on vertical duct openings

with the insulation-side down. Seals around duct openings

must be tight.

Step 1 — Provide Unit Support

ROOF CURB — Assemble and install the accessory roof curb

in accordance with instructions shipped with the curb. See

Fig. 1. Install insulation, cant strips, roofing felt, and counter

flashing as shown. Ductwork must be attached to curb. If

electric or control power will be routed through the basepan,

use the proper accessory kit listed in Fig. 1, available from your

local distributor. Attach the accessory thru-the-bottom service

connections to the basepan in accordance with the accessory

installation instructions. Connections must be installed before

the unit is set on the roof curb.

The roof curb should be level. Unit leveling tolerances are

shown in Fig. 2. This is necessary for the unit drain to function

properly. Refer to Accessory Roof Curb Installation Instruc-

tions for additional information as required.

Before performing service or maintenance operations on

unit, turn off main power switch to unit and install lockout

tag. Ensure voltage listed on unit data plate agrees with

electrical supply provided for the unit. Electrical shock

could cause personal injury.

IMPORTANT: The gasketing of the unit to the roof curb is

critical for a water-tight seal. Install gasket supplied with

the roof curb as shown in Fig. 1. Improperly applied gasket

can also result in air leaks and poor unit performance.

50TFQ008-012

Single-Package Rooftop

Heat Pump Units

Fig. 1 — Roof Curb Details

SLAB MOUNT (Horizontal Units Only) — Provide a level

concrete slab that extends a minimum of 6 in. beyond the unit

cabinet on all sides. Install a gravel apron in front of the

outdoor coil air inlet to prevent grass and foliage from obstruct-

ing airflow.

NOTE: Horizontal units may be installed on a roof curb if

required.

ALTERNATE UNIT SUPPORT — When the curb or

adapter cannot be used, support unit with sleeper rails using

unit curb or adapter support area. If sleeper rails cannot be

used, support the long sides of the unit with a minimum of

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

Step 2 — Field Fabricate Ductwork — On verti-

cal discharge units, secure all ducts to the roof curb and building

structure. Do not connect ductwork to the unit. For horizontal

applications, field-supplied flanges should be attached to

horizontal discharge openings and all ductwork attached to the

flanges. Insulate and weatherproof all external ductwork, joints,

and roof openings with counter flashing and mastic in accor-

dance with applicable codes.

Ducts passing through an unconditioned space must be

insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return

should be ducted through the roof deck to comply with applica-

ble fire codes.

A minimum clearance is not required around ductwork.

Cabinet return-air static pressure (a negative condition) should

not exceed 0.35 in. wg with economizer, or 0.45 in. wg without

economizer.

Step 3 — Install Condensate Drain Line and

External Trap — Condensate drain connections are locat-

ed at the bottom and end of the unit. Unit discharge connec-

tions do not determine the use of drain connections;

either drain connection can be used in vertical or horizontal

applications.

When using the standard end drain connection, make sure

the plug in the alternate bottom connection is tight before in-

stalling the unit.

To use the bottom drain connection for a roof curb installa-

tion, relocate the factory-installed plug from the bottom connec-

tion to the end connection. The center drain plug looks like a star

connection, but can be removed with a 1/2-in. socket drive exten-

sion. See Fig. 3. The piping for the condensate drain and external

trap can be completed after the unit is in place.

All units must have an external trap for condensate drain-

age. Install a trap at least 4-in. deep and protect against freeze-

up. If drain line is installed downstream from the external trap,

pitch the line away from the unit at 1/4-in. per ft of run. Do not

use a pipe size smaller than the unit connection. See Fig. 4.

Step 4 — Rig and Place Unit — Inspect the unit for

transportation damage. File any claim with the transportation

agency. Keep the unit upright and do not drop it. Spreader bars

are not required if top crating is left on the unit. Rollers may be

used to move the unit across a roof. Level by using the unit

frame as a reference. See Table 1 and Fig. 5 for additional

information. Operating weight is shown in Table 1 and Fig. 5.

Lifting holes are provided in the base rails as shown in

Fig. 5 and 6. Refer to rigging instructions on the unit.

POSITIONING — Maintain clearance around and above the

unit to provide proper airflow and service access. See Fig. 6.

Position the unit on the roof curb so that the following clear-

ances are maintained: 1/4-in. clearance between the roof curb

and base rails on each side and in front of the unit; 35/16-in.

clearance between the roof curb and the outdoor fan end of the

unit (see Fig. 1, section C-C).

Do not install the unit indoors. Do not locate the unit air

inlet near exhaust vents or other sources of contaminated air.

Although the unit is weatherproof, guard against water from

higher level runoff and overhangs.

After the unit is in position, remove the polyethylene ship-

ping wrapper and rigging skid.

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B B-C A-C

0.5 1.0 1.0

Fig. 2 — Unit Leveling Tolerances

DRAIN PLUGHORIZONTAL

DRAIN OUTLET

NOTE: Drain plug is shown in factory-installed position.

Fig. 3 — Condensate Drain Pan (Side View)

NOTE: Trap should be deep enough to offset maximum unit static

difference. A 4-in. trap is recommended.

Fig. 4 — Condensate Drain Piping Details

NOTES:

1. Dimension in ( ) is in millimeters.

2. Hook rigging shackles through holes in base rail, as shown in detail “A.”

Holes in base rails are centered around the unit center of gravity. Use

wooden top skid when rigging to prevent rigging straps from damaging

unit.

3. Unit weights do not include economizer. See Table 1 for economizer

weights.

All panels must be in place when rigging. Unit is not designed for handling

by a fork truck. Damage to unit may result.

Fig. 5 — Rigging Details

50TFQ WEIGHT A B C

Lb Kg in. mm in. mm in. mm

008 940 426 77.42 1966.5 41.5 1054 42.12 1070

009 965 438 77.42 1966.5 41.5 1054 42.12 1070

012 1015 460 77.42 1966.5 41.5 1054 42.12 1070

Table 1 — Physical Data

LEGEND

Bhp — Brake Horsepower

*Weightof14-in.roofcurb.

UNIT SIZE 50TFQ 008 009 012

NOMINAL CAPACITY (tons) 71/281/210

OPERATING WEIGHT (lb)

Unit 940 965 1015

Economizer

EconoMi$er IV 75 75 75

Roof Curb* 143 143 143

COMPRESSOR (Hermetic) Reciprocating Scroll

Quantity 222

Oil (oz) 45 ea 54 ea 54 ea

REFRIGERANT TYPE R-22

Operating Charge (lb-oz)

Circuit 1 5-14 8- 6 7-14

Circuit 2 5-13 8-13 8- 3

OUTDOOR COIL Enhanced Copper Tubes, Aluminum Lanced Fins, Acutrol™ Feed Device

Rows...Fins/in. 1...17 2...17 2...17

Total Face Area (sq ft) 20.50 18.00 18.30

OUTDOOR FAN Propeller Type

Nominal Cfm 6500 6500 6500

Quantity...Diameter (in.) 2...22 2...22 2...22

Motor Hp...Rpm 1/4...1100 1/4...1100 1/4...1100

Watts Input (Total) 500 500 500

INDOOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol Feed Device

Rows...Fins/in. 3...15 3...15 3...15

Total Face Area (sq ft) 8.0 8.0 11.1

INDOOR FAN Centrifugal Type

Quantity...Size (in.) Std 1...15 x 15 1...15 x 15 1...15 x 15

Alt 1...15 x 15 — 1...15 x 15

High-Static 1...15 x 15 1...15 x 15 1...15 x 15

Type Drive Std Belt Belt Belt

Alt Belt — Belt

High-Static Belt Belt Belt

Nominal Cfm 3000 3600 4000

Maximum Continuous Bhp Std 2.40 2.40 2.40

Alt 2.40 — 2.90

High-Static 3.70 3.70 5.25

Motor Frame Size Std 56 56 56

Alt 56 — 56

High-Static 56 56 56

Nominal Rpm Std ———

Alt ———

High-Static 1725 1725 1725

Fan Rpm Range Std 590- 840 685- 935 685- 935

Alt 685- 935 — 835-1085

High-Static 860-1080 860-1080 830-1130

Motor Bearing Type Ball Ball Ball

Maximum Allowable Rpm 2100 2100 2100

Motor Pulley Pitch Diameter Min/Max (in.) Std 2.4/3.4 2.8/3.8 2.8/3.8

Alt 2.8/3.8 — 3.4/4.4

High-Static 4.0/5.0 4.0/5.0 2.8/3.8

Nominal Motor Shaft Diameter (in.) Std 5/85/85/8

Alt 5/8—7/8

High-Static 7/87/87/8

Fan Pulley Pitch Diameter (in.) Std 7.0 7.0 7.0

Alt 7.0 — 7.0

High-Static 8.0 8.0 5.8

Belt, Quantity...Type...Length (in.) Std 1...A...53 1...A...48 1...A...49

Alt 1...A...49 — 1...A...51

High-Static 1...A...65 1...A...53 1...BX...48

Pulley Center Line Distance (in.) Std 16.75-19.25 16.75-19.25 15.85-17.50

Alt 16.75-19.25 — 15.85-17.50

High-Static 16.75-19.25 16.75-19.25 15.85-17.50

Speed Change per Full Turn of

Moveable Pulley Flange (rpm)

Std 50 50 50

Alt 50 — 50

High-Static 60 60 60

Moveable Pulley Maximum Full Turns

From Closed Position

Std 555

Alt 5—5

High-Static 556

Factory Setting Std 555

Alt 5—5

High-Static 555

Factory Speed Setting (rpm) Std 590 685 685

Alt 685 — 835

High-Static 860 880 887

Fan Shaft Diameter at Pulley (in.) 111

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief (Differential) 450 ± 50

Cutout 428

Reset (Auto.) 320

LOSS-OF-CHARGE (LOW-PRESSURE) SWITCH (psig)

Cutout 7±3

Reset (Auto.) 22 ± 5

FREEZE PROTECTION THERMOSTAT (F)

Opens 30 ± 5

Closes 45 ± 5

OUTDOOR-AIR INLET SCREENS Cleanable.

Screen quantity and size vary based on options selected.

RETURN-AIR FILTERS Throwaway

Quantity...Size (in.) 4...16 x 20 x 2 4...16 x 20 x 2 4...20 x 20 x 2

Fig. 6 — Base Unit Dimensions

Step 5 — Make Electrical Connections

FIELD POWER SUPPLY — All units except 208/230-v

units are factory-wired for the voltage shown on the unit name-

plate. If the 208/230-v unit is to be connected to a 208-v power

supply, the transformer must be rewired by disconnecting the

black wire from the 230-v 1/4-in. male spade terminal on the

transformer and connecting it to the 208-v 1/4-in. male spade

terminal from the transformer.

Refer to the unit label diagram for additional information.

Pigtails are provided for field wire connections. Use factory-

supplied splices or a UL (Underwriters’ Laboratories) approved

copper/aluminum connector.

When installing units, provide a disconnect per the NEC.

All field wiring must comply with the NEC and local re-

quirements. In Canada, electrical connections must be made in

accordance with CSA (Canadian Standards Association) C22.1

Canadian Electrical Code Part One.

Install field wiring as follows:

1. Install conduit through the side panel openings. For units

without electric heat, install conduit between the discon-

nect and control box.

2. Install power lines to terminal connections as shown in

Fig. 7.

3. For units with electric heat, refer to Table 2 and Accessory

Installation Instructions.

During operation, voltage to compressor terminals must be

within range indicated on unit nameplate (see Tables 3A and

3B). On 3-phase units, voltages between phases must be bal-

anced within 2%, and the current within 10%. Use the formula

shown in Tables 3A and 3B, Note 2 on page 11 to determine

the percentage of voltage imbalance. Operation on improper

line voltage or excessive phase imbalance constitutes abuse

and may cause damage to electrical components. Such opera-

tion would invalidate any applicable Carrier warranty.

Unit cabinet must have an uninterrupted, unbroken electri-

cal ground to minimize the possibility of personal injury if

an electrical fault should occur. This ground may consist of

electrical wire connected to unit ground lug in control com-

partment, or conduit approved for electrical ground when

installed in accordance with NEC (National Electrical

Code) ANSI (American National Standards Institute)/

NFPA (National Fire Protection Association) 70 latest year

and local electrical codes. Failure to follow this warning

could result in the installer being liable for personal injury

of others.

LEGEND

Fig. 7 — Power Wiring Connections

C—Contactor

COMP — Compressor

IFC — Indoor-Fan Contactor

NEC — National Electrical Code

TB — Terminal Block

Field Wiring

Factory Wiring

Splice Connection

(Factory-Supplied)

208/230-3-60

460-3-60

575-3-60

Table 2 — Electric Heating Capacities

*Two heater packages required to provide kW indicated.

†Use CRSINGLE008A00 for units with an electrical convenience outlet.

NOTES:

1. The rated heater voltage is 240, 480, and 575 v. If power distribution voltage varies from rated heater voltage, heater kW will vary accordingly.

2. To determine heater kW at voltages other than those shown in table, use the following formula:

Heater kW new = Heater kW rated x (unit power distribution voltage/rated heater voltage)2

As an example:

For a 16 kW heater rated at 240 v with a power distribution voltage of 215 v

kW new = 16 kW (215/240)2

kW new = 12.8 kW (rating at 215 v)

Table 3A — Electrical Data (Units Without Electrical Convenience Outlet)

NOTE: Legend and Notes for Electrical Data are on page 11.

50TFQ

UNIT SIZE

UNIT VOLTAGE

(60 Hz)

ACCESSORY

ELECTRIC HEATER

PART NUMBER

CRHEATER---A00

SINGLE POINT BOX

PAC KAGE NO.

CRSINGLE---A00

008, 009

208/230/240

(3 phase)

7.8/ 9.6/10.4

12.0/14.7/16.0

18.6/22.8/24.8

24.0/29.4/32.0

31.8/39.0/42.4*

017

010

011

012

012 and 017

007

009

013

460/480

(3 phase)

12.8/13.9

15.2/16.5

25.6/27.8

30.4/33.0

38.4/41.7*

016

013

014

015

014 and 016

006

008

010

575

(3 phase)

17.0

34.0

018

019

006

006†

012

208/230/240

(3 phase)

7.8/ 9.6/10.4

12.0/14.7/16.0

24.0/29.4/32.0

31.8/39.0/42.4*

37.6/46.2/50.0*

017

010

012

012 and 017

010 and 012

012

015

017

460/480

(3 phase)

15.2/16.5

25.6/27.8

30.4/33.0

38.4/41.7*

45.9/50.0*

013

014

015

014 and 016

013 and 015

011

014

016

575

(3 phase)

17.0

34.0

51.0*

018

019

018 and 019

011

014

016

50TFQ

UNIT SIZE

NOMINAL

V-PH-Hz

IFM

TYPE

VOLTAGE

RANGE

COMPRESSOR

(each) OFM

FLA

IFM

FLA

ELECTRIC HEAT* POWER SUPPLY DISCONNECT

SIZE†

Min Max RLA LRA Nominal

kW** FLA MCA MOCP FLA LRA

008

(71/2Tons)

208/230-3-60

STD 187 254 13.4 91.0 1.4 5.8

— — 38.8/ 38.8 40/ 40†† 41/ 41 229/229

7.8/10.4 21.7/ 25.0 65.9/ 70.0 70/ 70 66/ 69 251/254

12.0/16.0 33.3/ 38.5 80.4/ 86.9 90/ 90 79/ 85 262/268***

18.6/24.8 51.6/ 59.7 103.3/113.4 110/125 100/109 281/289***

24.0/32.0 66.6/ 77.0 122.0/135.0 125/150 117/129 296/306***

31.8/42.4 88.3/102.0 149.1/166.3 150/175 142/158 317/331***

HIGH-STATIC 187 254 13.4 91.0 1.4 10.6

— — 43.6/ 43.6 45/ 45†† 46/ 46 273/273

7.8/10.4 21.7/ 25.0 70.7/ 74.8 80/ 80 71/ 75 294/298

12.0/16.0 33.3/ 38.5 85.2/ 91.7 90/100 85/ 91 306/311***

18.6/24.8 51.6/ 59.7 108.1/118.2 110/125 106/115 324/332***

24.0/32.0 66.6/ 77.0 126.8/139.8 150/150 123/135 339/350***

31.8/42.4 88.3/102.0 153.9/171.1 175/175 148/164 361/375***

460-3-60

STD 414 508 6.7 42.0 0.7 2.6

— — 19.1 20†† 20 108

13.9 16.7 40.0 40†† 39 124

16.5 19.8 43.8 45†† 43 128

27.8 33.4 60.8 70 58 141

33.0 39.7 68.7 70 66 147

41.7 50.2 81.8 90 78 158

HIGH-STATIC 414 508 6.7 42.0 0.7 4.8

— — 21.3 25†† 23 130

13.9 16.7 42.2 45†† 42 146

16.5 19.8 46.0 50†† 45 149

27.8 33.4 63.0 70 61 163

33.0 39.7 70.9 80 68 169

41.7 50.2 84.0 90 80 180***

575-3-60

STD

518 632 5.4 39.0 0.7

2.6

— — 15.4 20†† 16 97

17.0 17.1 36.7 40†† 36 114

34.0 34.1 58.0 60†† 55 131

HIGH-STATIC 4.8

— — 17.1 20†† 18 114

17.0 17.1 38.5 40†† 38 132

34.0 34.1 59.7 60†† 57 149

Table 3A — Electrical Data (Units Without Electrical Convenience Outlet) (cont)

NOTE: Legend and Notes for Electrical Data are on page 11.

50TFQ

UNIT SIZE

NOMINAL

V-PH-Hz

IFM

TYPE

VOLTAGE

RANGE

COMPRESSOR

(each) OFM

FLA

IFM

FLA

ELECTRIC HEAT* POWER SUPPLY DISCONNECT

SIZE†

Min Max RLA LRA Nominal

kW** FLA MCA MOCP FLA LRA

009

(81/2Tons)

208/230-3-60

STD 187 254 16.0 137.0 1.4 5.8

— — 44.6/ 44.6 45/ 45†† 47/ 47 321/321

7.8/10.4 21.7/ 25.0 71.7/ 75.9 80/ 80 72/ 75 343/346

12.0/16.0 33.3/ 38.5 86.2/ 92.7 90/100 85/ 91 354/360***

18.6/24.8 51.6/ 59.7 109.1/119.2 110/125 106/115 373/381***

24.0/32.0 66.6/ 77.0 127.9/140.9 150/150 123/135 388/398***

31.8/42.4 88.3/102.0 155.0/172.1 175/175 148/164 409/428***

HIGH-STATIC 187 254 16.0 137.0 1.4 10.6

— — 49.4/ 49.4 50/ 50†† 52/ 52 365/365

7.8/10.4 21.7/ 25.0 76.5/ 80.7 80/ 90 77/ 81 386/390***

12.0/16.0 33.3/ 38.5 91.0/ 97.5 100/100 91/ 96 398/403***

18.6/24.8 51.6/ 59.7 113.9/124.0 125/125 112/121 416/424***

24.0/32.0 66.6/ 77.0 132.7/145.7 150/150 129/141 431/442***

31.8/42.4 88.3/102.0 159.8/176.9 175/200 154/170 453/467***

460-3-60

STD 414 508 8.3 69.0 0.7 2.6

— — 22.7 25†† 24 162

13.9 16.7 43.6 45†† 43 178

16.5 19.8 47.4 50†† 46 182

27.8 33.4 64.4 70 62 195

33.0 39.7 72.3 80 69 201

41.7 50.2 85.4 90 81 212***

HIGH-STATIC 414 508 8.3 69.0 0.7 4.8

— — 24.9 25†† 26 184

13.9 16.7 45.8 50†† 45 200

16.5 19.8 49.6 50†† 49 203

27.8 33.4 66.6 70 65 217

33.0 39.7 74.5 80 72 223

41.7 50.2 87.6 90 84 234***

575-3-60

STD

518 632 6.4 58.0 0.7

2.6

— — 17.6 20†† 18 135

17.0 17.1 39.0 40†† 38 152

34.0 34.1 60.2 70†† 58 169

HIGH-STATIC 4.8

— — 19.4 20†† 20 152

17.0 17.1 40.7 45†† 40 170

34.0 34.1 62.0 70 60 187

012

(10 Tons)

208/230-3-60

STD 187 254 17.2 124.0 1.4 5.8

— — 47.3/ 47.3 50/ 50†† 49/ 49 295/295

7.8/10.4 21.7/ 25.0 74.4/ 78.6 80/ 80 74/ 78 317/320

12.0/16.0 33.3/ 38.5 88.9/ 95.4 90/100 88/ 94 328/334***

24.0/32.0 66.6/ 77.0 130.6/143.6 150/150 126/138 362/372***

31.8/42.4 88.3/102.0 157.7/174.8 175/175 151/167 383/397***

37.6/50.0 104.4/120.3 177.8/167.6 200/175 170/188 399/415***

ALT 187 254 17.2 124.0 1.4 7.5

— — 49.0/ 49.0 50/ 50†† 51/ 51 314/314

7.8/10.4 21.7/ 25.0 76.1/ 80.8 80/ 90 76/ 80 336/389***

12.0/16.0 33.3/ 38.5 90.6/ 97.1 100/100 90/ 96 347/353***

24.0/32.0 66.6/ 77.0 132.3/145.3 150/150 128/140 381/391***

31.8/42.4 88.3/102.0 159.4/176.5 175/200 153/169 402/416***

37.6/50.0 104.4/120.3 179.5/169.3 200/200 171/190 418/434***

HIGH-STATIC 187 254 17.2 124.0 1.4 15.0

— — 56.5/ 56.5 60/ 60†† 60/ 60 362/362

7.8/10.4 21.7/ 25.0 83.6/ 87.8 90/ 90 85/ 89 384/387***

12.0/16.0 33.3/ 38.5 98.1/104.6 100/110 98/104 395/401***

24.0/32.0 66.6/ 77.0 139.8/152.8 150/175 137/149 429/439***

31.8/42.4 88.3/102.0 166.9/184.0 175/200 162/177 450/464***

37.6/50.0 104.4/120.3 187.0/176.8 200/200 180/198 466/482***

460-3-60

STD 414 508 8.6 59.6 0.7 2.6

— — 23.4 25†† 24 143

16.5 19.8 48.1 50†† 47 163

27.8 33.4 65.1 70 63 176

33.0 39.7 73.0 80 70 183

41.7 50.2 86.1 90 82 193***

50.0 60.1 83.5 90 93 203***

ALT 414 508 8.6 59.6 0.7 3.4

— — 24.2 25†† 25 182

16.5 19.8 48.9 50†† 48 202

27.8 33.4 65.9 70 64 216

33.0 39.7 73.8 80 71 222

41.7 50.2 86.9 90 83 233***

50.0 60.1 84.3 90 94 243***

HIGH-STATIC 414 508 8.6 59.6 0.7 7.4

— — 28.2 30†† 30 176

16.5 19.8 52.9 60†† 53 196

27.8 33.4 69.9 70 68 210

33.0 39.7 77.8 80 76 216

41.7 50.2 90.9 100 88 227***

50.0 60.1 88.3 100 99 237***

575-3-60

STD 518 632 6.9 49.4 0.7 2.6

— — 18.7 20†† 20 118

17.0 17.1 40.1 45†† 39 135

34.0 34.1 61.4 70 59 152

51.0 51.2 69.9 70 78 169

ALT 518 632 6.9 49.4 0.7 3.4

— — 19.4 20†† 20 149

17.0 17.1 40.7 45†† 40 166

34.0 34.1 62.0 70 60 183

51.0 51.2 70.6 80 79 201***

HIGH-STATIC 518 632 6.9 49.4 0.7 7.4

— — 22.6 25†† 24 145

17.0 17.1 43.9 45†† 44 162

34.0 34.1 65.2 70 63 179

51.0 51.2 73.8 80 83 196***

Table 3B — Electrical Data (Units With Electrical Convenience Outlet)

NOTE: Legend and Notes for Electrical Data are on page 11.

50TFQ

UNIT SIZE

NOMINAL

V-PH-Hz

IFM

TYPE

VOLTAGE

RANGE

COMPRESSOR

(each) OFM

FLA

IFM

FLA

ELECTRIC

HEAT* POWER SUPPLY DISCONNECT

SIZE†

Min Max RLA LRA Nominal

kW** FLA MCA MOCP FLA LRA

008

(71/2Tons)

208/230-3-60

STD 187 254 13.4 91.0 1.4 5.8

— — 43.6/ 43.6 45/ 45†† 46/ 46 234/234

7.8/10.4 21.7/ 25.0 70.7/ 74.8 80/ 80 71/ 75 256/259

12.0/16.0 33.3/ 38.5 85.2/ 91.7 90/100 85/ 91 267/272***

18.6/24.8 51.6/ 59.7 108.1/118.2 110/125 106/115 285/294***

24.0/32.0 66.6/ 77.0 126.8/139.8 150/150 123/135 300/311***

31.8/42.4 88.3/102.0 153.9/171.1 175/175 148/164 322/336***

HIGH-STATIC 187 254 13.4 91.0 1.4 10.6

— — 48.4/ 48.4 50/ 50†† 52/ 52 277/277

7.8/10.4 21.7/ 25.0 75.5/ 79.6 80/ 80 77/ 81 299/302***

12.0/16.0 33.3/ 38.5 90.0/ 96.5 90/100 90/ 96 311/316***

18.6/24.8 51.6/ 59.7 112.9/123.0 125/125 111/120 329/337***

24.0/32.0 66.6/ 77.0 131.6/144.6 150/150 128/140 344/354***

31.8/42.4 88.3/102.0 158.7/175.9 175/200 153/169 366/379***

460-3-60

STD 414 508 6.7 42.0 0.7 2.6

— — 21.3 25†† 23 110

13.9 16.7 42.1 45†† 42 127

16.5 19.8 46.0 50†† 45 130

27.8 33.4 63.0 70 61 143

33.0 39.7 70.9 80 68 150

41.7 50.2 84.0 90 80 160***

HIGH-STATIC 414 508 6.7 42.0 0.7 4.8

— — 23.5 25†† 25 132

13.9 16.7 44.3 45†† 44 148

16.5 19.8 48.2 50†† 48 151

27.8 33.4 65.2 70 63 165

33.0 39.7 73.1 80 71 171

41.7 50.2 86.2 90 83 182***

575-3-60

STD 518 632 5.4 39.0 0.7 2.6

— — 17.1 20†† 18 99

17.0 17.1 38.5 40†† 38 116

34.0 34.1 59.7 60†† 57 133

HIGH-STATIC 518 632 5.4 39.0 0.7 4.8

— — 18.9 20†† 20 116

17.0 17.1 40.2 45†† 40 133

34.0 34.1 61.5 70 59 150

009

(81/2Tons)

208/230-3-60

STD 187 254 16.0 137.0 1.4 5.8

— — 49.4/ 49.4 50/ 50†† 52/ 52 326/326

7.8/10.4 21.7/ 25.0 76.5/ 80.7 80/ 90 77/ 81 348/351

12.0/16.0 33.3/ 38.5 91.0/ 97.5 100/100 91/ 96 359/364

18.6/24.8 51.6/ 59.7 113.9/124.0 125/125 112/121 377/386

24.0/32.0 66.6/ 77.0 132.7/145.7 150/150 129/141 392/403

31.8/42.4 88.3/102.0 154.8/176.9 175/200 154/170 414/428

HIGH-STATIC 187 254 16.0 137.0 1.4 10.6

— — 54.2/ 54.2 60/ 60†† 58/ 58 369/369

7.8/10.4 21.7/ 25.0 81.3/ 85.5 90/ 90 83/ 86 391/394***

12.0/16.0 33.3/ 38.5 95.8/102.3 100/110 96/102 403/408***

18.6/24.8 51.6/ 59.7 118.7/128.8 125/150 117/126 421/429***

24.0/32.0 66.6/ 77.0 137.5/150.5 150/175 134/146 436/446***

31.8/42.4 88.3/102.0 164.6/181.7 175/200 159/175 458/471***

460-3-60

STD 414 508 8.3 69.0 0.7 2.6

— — 24.9 25†† 26 164

13.9 16.7 45.7 50†† 45 181

16.5 19.8 49.6 50†† 49 184

27.8 33.4 66.6 70 65 197

33.0 39.7 74.5 80 72 204

41.7 50.2 87.6 90 84 214***

HIGH-STATIC 414 508 8.3 69.0 0.7 4.8

— — 27.1 30†† 29 186

13.9 16.7 47.9 50†† 48 202

16.5 19.8 51.8 60†† 51 205

27.8 33.4 68.8 70 67 219

33.0 39.7 76.7 80 74 225

41.7 50.2 89.8 90 86 236***

575-3-60

STD 518 632 6.4 58.0 0.7 2.6

— — 19.3 20†† 20 137

17.0 17.1 40.7 45†† 40 154

34.0 34.1 62.0 70 60 171

HIGH-STATIC 518 632 6.4 58.0 0.7 4.8

— — 21.1 25†† 22 154

17.0 17.1 42.5 45†† 42 171

34.0 34.1 63.7 70 62 188

Table 3B — Electrical Data (Units With Electrical Convenience Outlet) (cont)

LEGEND

*Heaters are field installed only.

†Used to determine minimum disconnect size per NEC.

**Heater capacity (kW) is based on heater voltage of 208 v, 240 v, 480 v, and 575 v. If

power distribution voltage to unit varies from rated heater voltage, heater kW will vary

accordingly.

††Fuse or HACR circuit breaker.

***Optional disconnect switch is unavailable.

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.

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 voltage imbalance.

%Voltage Imbalance

Example: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

= 457

Determine maximum deviation from average voltage.

(AB)457–452=5v

(BC) 464 – 457 = 7 v

(AC) 457 – 455 = 2 v

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

%Voltage Imbalance = 100 x

=1.53%

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

2%.

50TFQ

UNIT SIZE

NOMINAL

V-PH-Hz

IFM

TYPE

VOLTAGE

RANGE

COMPRESSOR

(each) OFM

FLA

IFM

FLA

ELECTRIC

HEAT* POWER SUPPLY DISCONNECT

SIZE†

Min Max RLA LRA Nominal

kW** FLA MCA MOCP FLA LRA

012

(10 Tons)

208/230-3-60

STD 187 254 17.2 124.0 1.4 5.8

— — 52.1/ 52.1 60/ 60†† 55/ 55 300/300

7.8/10.4 21.7/ 25.0 79.2/ 83.4 80/ 90 80/ 84 322/325***

12.0/16.0 33.3/ 38.5 93.7/100.2 100/110 93/ 99 333/338***

24.0/32.0 66.6/ 77.0 135.4/148.4 150/150 132/144 366/377***

31.8/42.4 88.3/102.0 162.5/179.6 175/200 157/172 388/402***

37.6/50.0 104.4/120.3 182.6/172.4 200/200 175/193 404/420***

ALT 187 254 17.2 124.0 1.4 7.5

— — 53.8/ 53.8 60/ 60†† 57/ 57 319/319

7.8/10.4 21.7/ 25.0 80.9/ 85.1 90/ 90 82/ 86 341/344***

12.0/16.0 33.3/ 38.5 95.4/101.9 100/110 95/101 352/357***

24.0/32.0 66.6/ 77.0 137.1/150.1 150/175 134/145 385/396***

31.8/42.4 88.3/102.0 164.2/181.3 175/200 158/174 407/421***

37.6/50.0 104.4/120.3 184.3/174.1 200/200 177/195 423/439***

HIGH-STATIC 187 254 17.2 124.0 1.4 15.0

— — 61.3/ 61.3 70/ 70 66/ 66 367/367

7.8/10.4 21.7/ 25.0 88.4/ 92.6 90/100 91/ 94 389/392***

12.0/16.0 33.3/ 38.5 102.9/109.4 110/110 104/110 400/405***

24.0/32.0 66.6/ 77.0 144.6/157.6 150/175 142/154 433/444***

31.8/42.4 88.3/102.0 171.7/188.8 175/200 167/183 455/459***

37.6/50.0 104.4/120.3 191.8/181.6 200/200 186/204 471/487***

460-3-60

STD 414 508 8.6 59.6 0.7 2.6

— — 25.5 30†† 27 145

16.5 19.8 50.3 60†† 50 165

27.8 33.4 67.3 70 65 178

33.0 39.7 75.2 80 73 185

41.7 50.2 88.3 90 85 195***

50.0 60.1 85.6 90 96 205***

ALT 414 508 8.6 59.6 0.7 3.4

— — 26.3 30†† 28 185

16.5 19.8 51.1 60†† 51 204

27.8 33.4 68.1 70 66 218

33.0 39.7 76.0 80 73 224

41.7 50.2 89.1 90 86 235***

50.0 60.1 86.4 90 97 245***

HIGH-STATIC 414 508 8.6 59.6 0.7 7.4

— — 30.3 35†† 32 179

16.5 19.8 55.1 60†† 55 198

27.8 33.4 72.1 80 71 212

33.0 39.7 80.0 80 78 218

41.7 50.2 93.1 100 90 229***

50.0 60.1 90.4 100 102 239***

575-3-60

STD 518 632 6.9 49.4 0.7 2.6

— — 20.5 25†† 22 120

17.0 17.1 41.8 45†† 41 137

34.0 34.1 63.1 70 61 154

51.0 51.2 71.7 80 80 171***

ALT 518 632 6.9 49.4 0.7 3.4

— — 21.1 25†† 22 151

17.0 17.1 42.5 45†† 42 168

34.0 34.1 63.7 70 62 185

51.0 51.2 72.3 80 81 202***

HIGH-STATIC 518 632 6.9 49.4 0.7 7.4

— — 24.3 25†† 26 146

17.0 17.1 45.7 50†† 46 163

34.0 34.1 66.9 70 65 180

51.0 51.2 75.5 80 85 198***

FLA — Full Load Amps

HACR — Heating, Air Conditioning and Refrigeration

IFM — Indoor Fan Motor

LRA — Locked Rotor Amps

MCA — Minimum Circuit Amps

MOCP — Maximum Overcurrent Protection

NEC — National Electrical Code

OFM — Outdoor Fan Motor

RLA — Rated Load Amps

= 100 x max voltage deviation from average voltage

average voltage

Average Voltage = 452 +464 +455

=1371

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local

electric utility company immediately.

457

FIELD CONTROL WIRING — Install a Carrier-approved

accessory thermostat assembly according to the installation

instructions included with the accessory. Locate the thermostat

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

age temperature in accordance with the thermostat installation

instructions.

NOTE: If using a Carrier electronic thermostat, set the thermo-

stat configuration for “non-heat pump operation.” This family

of products does not require an O terminal to energize the

reversing valve.

Route the thermostat cable or equivalent single leads of

colored wire from the subbase terminals to the low-voltage

connections on the unit (shown in Fig. 8A and 8B) as described

in Steps 1 through 4 below.

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

Wire Gage) insulated wire (35 C minimum). For 51 to 75 ft,

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

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

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

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

thermostat.

1. If the unit is mounted on the roof curb and the accessory

thru-the-curb service plate connection is used, route wire

through the connection plate.

2. Pass control wires through the hole provided on the unit

(see connection D in Connection Sizes table in Fig. 6).

3. Feed wire through the raceway built into the corner post to

the 24-v barrier located on the left side of the control box.

See Fig. 9. The raceway provides the UL required clear-

ance between the high-voltage and low-voltage wiring.

4. Connect the thermostat wires to the screw terminals of

the low-voltage connector (see Fig. 8A and 8B).

NOTE: If the unit is mounted on a roof curb and electrical

power will be run up “thru-the-bottom,” use accessory kit

number CRBTMPWR002A01. This kit, available from your

local distributor, ensures a watertight seal. Refer to the acces-

sory installation instructions for information on power wiring.

Refer to Fig. 6 for drilling holes in basepan.

DEFROST BOARD — The defrost board timer cycle is set to

30 minutes. To change the cycle time, turn off power to the

unit and install lockout tag. Remove the wire from defrost

board connected to the 30 minute quick-connect. See Fig. 10.

Connect the wire to the 50 or 90 minute quick-connects on the

defrost board, depending on the desired defrost time.

HEAT ANTICIPATOR SETTINGS — For units with electric

heat, set heat anticipator settings as shown in Table 4.

Step 6 — Adjust Factory-Installed Options

DISCONNECT SWITCH — The optional disconnect switch

is non-fused. The switch can be locked in place for safety

purposes.

WIRE

CONNECTIONS

LOW-VOLTAGE

SECTION

(CONNECTION

BOARD)

COOL STAGE 1

FAN

HEAT STAGE 1

COOL STAGE 2

HEAT STAGE 2

24 VAC HOT

24 VAC COM

N/A

OUTDOOR AIR

SENSOR

Y1/W2

W/W1

Y/Y2

O/W2

THERMOSTAT DIPSWITCH SETTINGS

IPD/X

OFF

ABCD

LEGEND

NOTE: Underlined letter indicates active thermostat output when

configured for A/C operation.

Fig. 8A — Low-Voltage Connections With or

Without Economizer or Two-Position Damper

Field Wiring

COMPRESSOR

NO. 2

DISCONNECT

BOARD

DISCONNECT

SWITCH

(OPTIONAL)

RACEWAY

HOLE IN

END

PANEL

COMPRESSOR NO. 1

CONVENIENCE

OUTLET

24 VAC

RMTOCC

CMPSAFE

FSD

NOT USED

SFS

THERMOSTAT CONTROL

CONNECTION

BOARD

CONNECTION

CONTROL

Fig. 9 — Typical Field Control Wiring Raceway

Fig. 8B — Low Voltage Connections

(Units with PremierLink™ Controls)

Table 4 — Heat Anticipator Settings

*kW is based on 240, 480, or 575 v.

CONVENIENCE OUTLET — An optional convenience out-

let provides power for rooftop use. For maintenance personnel

safety, the convenience outlet power is off when the unit dis-

connect is off. Adjacent unit outlets may be used for service

tools. An optional “Hot Outlet” is available from the factory as

a special order item.

NOVAR CONTROLS — Optional Novar controls (ETM 3051)

are available for replacement or new construction jobs.

MANUAL OUTDOOR-AIR DAMPER — The outdoor-air

hood and screen are attached to the basepan at the bottom of

the unit (for shipping).

Assembly:

1. Determine the amount of ventilation required for build-

ing. Record the amount for use in Step 8.

2. Remove the filter access panel by raising the panel and

swinging it outward. The panel is now disengaged from

the track and can be removed. No tools are required to re-

move the filter access panel. Remove the outdoor-air

opening panel. Save the panels and screws. See Fig. 11.

3. Separate the hood and screen from the basepan by remov-

ing the screws and brackets securing them. Save all

screws and discard the brackets.

4. Replace the outdoor air opening panel.

5. Place the hood on the front of the outdoor air opening

panel. See Fig. 12 for hood details. Secure the top of the

hood with the 6 screws removed in Step 3. See Fig. 13.

6. Remove and save the 8 screws (4 on each side) from the

sides of the manual outdoor-air damper.

7. Align the screw holes on the hood with the screw holes

on the side of the manual outdoor-air damper. See Fig. 12

and 13. Secure the hood with the 8 screws from Step 6.

8. Adjust the minimum position setting of the damper blade

by adjusting the manual outdoor-air adjustment screws on

the front of the damper blade. See Fig. 11. Slide the blade

vertically until it is in the appropriate position determined

by Fig. 14. Tighten the screws.

9. Remove and save the screws currently on the sides of

hood. Insert the screen. Secure the screen to the hood

using the screws. See Fig. 13.

10. Replace the filter access panel. Ensure that the filter

access panel slides along the tracks and is securely

engaged.

UNIT

UNIT VOLTAGE

208/230 460 575

Heater

kW*

Configuration Heater

kW*

Configuration Heater

kW*

Configuration

1-Stage 2-Stage 1-Stage 2-Stage 1-Stage 2-Stage

Stage 1 Stage 2 Stage 1 Stage 2 Stage 1 Stage 2

50TFQ

10.4, 16.0 0.3 NA NA 13.9, 16.5

27.8, 33.0 0.3 NA NA 17.0, 34.0 0.3 NA NA

24.8, 32.0 0.6 0.3 0.3

42.4, 50.0 0.9 0.6 0.3 41.7, 50.0 0.6 0.3 0.3 51.0 0.6 0.3 0.3

Fig. 10 — Defrost Board

SCREWS

(SIDE)

MANUAL

OUTDOOR-AIR

ADJUSTMENT

SCREWS DAMPER

BLADE

FILTER

ACCESS

PANEL

OUTDOOR AIR

OPENING

PANEL

Fig. 11 — Damper Panel with Manual

Outdoor-Air Damper Installed

PREMIERLINK™ CONTROL — The PremierLink control-

ler is compatible with Carrier Comfort Network® (CCN)

devices. This control is designed to allow users the access and

ability to change factory-defined settings, thus expanding

the function of the standard unit control board. Carrier’s diag-

nostic standard tier display tools such as Navigator™ module

or Scrolling Marquee can be used with the PremierLink

controller.

The PremierLink controller (see Fig. 15A and 15B) requires

a Carrier electronic thermostat or a CCN connection for time

broadcast to initiate its internal timeclock. This is necessary for

broadcast of time of day functions (occupied/unoccupied). Re-

fer to Fig. 16. The PremierLink control may be mounted in the

control panel or an area below the control panel.

NOTE: PremierLink versions 1.3 and later are shipped in Sen-

sor mode. If used with a thermostat, the PremierLink control

must be configured to Thermostat mode.

The PremierLink control includes a supply-air temperature

sensor (SAT) and an outdoor-air temperature sensor (OAT) as

standard. An indoor-air quality (CO2) sensor can be added as

an option. Refer to Table 5 for sensor usage.

Install the Supply Air Temperature (SAT) Sensor —When

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

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

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

PremierLink control over the control box, through a grommet,

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

along 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 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 1/2-in. hole in the flange or duct. Use two field-

supplied, self-drilling screws to secure the sensor probe in a

horizontal orientation.

NOTE: The sensor must be mounted in the discharge airstream

downstream of the cooling coil and any heating devices. Be

sure that 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 factory-mounted PremierLink control, the

outdoor-air temperature (OAT) sensor 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 separate field-supplied transformer must be used to pow-

er the CO2sensor.

Wire the CO2sensor to the COM and IAQI terminals of J5

on the PremierLink controller. Refer to the PremierLink Instal-

lation, Start-up, and Configuration Instructions for detailed

wiring and configuration information.

Fig. 12 — Outdoor-Air Hood Details

SCREW

HOLES

(TOP)

HOOD

SCREEN

LOCATION

(SCREEN

NOT

SHOWN)

Fig. 13 — Optional Manual Outdoor-Air

Damper with Hood Attached

Fig. 14 — Outdoor Air Damper Position Setting

Table 5 — PremierLink™ Sensor Usage

*PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and

Outdoor Air Temperature Sensor HH79NZ017 — Included with factory-installed PremierLink control;

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

NOTES:

1. CO2Sensors (Optional):

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

33ZCASPCO2 — Aspirator box used for duct-mounted CO2room sensor.

33ZCT55CO2 — Space temperature and CO2room sensor with override.

33ZCT56CO2 — Space temperature and CO2room sensor with override and set point.

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 HH79NZ017)

Compressor Lockout Sensor — 50HJ540570 — Opens at 35 F, closes at 50 F.

APPLICATION OUTDOOR AIR

TEMPERATURE SENSOR

RETURN AIR

TEMPERATURE SENSOR

OUTDOOR AIR

ENTHALPY SENSOR

RETURN AIR

ENTHALPY SENSOR

Dry Bulb

Temperature with

PremierLink™*

(PremierLink

requires4-20mA

Actuator)

Included —

HH79NZ017 ———

Differential Dry Bulb

Temperature with

PremierLink*

(PremierLink

requires4-20mA

Actuator)

Included —

HH79NZ017

Required —

33ZCT55SPT

or Equivalent

——

Single Enthalpy with

PremierLink*

(PremierLink

requires4-20mA

Actuator)

Included —

Not Used —Required —

HH57AC077 —

Differential Enthalpy

with PremierLink*

(PremierLink

requires4-20mA

Actuator)

Included —

Not Used —Required —

HH57AC077

Required —

HH57AC078

Fig. 15A — PremierLink Controller

TB-1

TB-3

TB-2

ANAL OG

0-20mAIN

DISCRETE

PWR

COMMS

0-20 mA

Relays

HK50AA039

BRN

BRN WHT

WHT

RED

PNK

ORNORN

ORN

GRA

ORN

RED

PP/MP

WHT

BLK

RED

PNK

WHT

BLK

PNK

WHT

BLU

ORN

YEL

GRN

BRN

RED

BRN

BLK

BRN

BLU

PNK

VIO

GRA

ORN

PNK

GRA

SAT

BRN

ORN

BLK

RED

Space Temp./ Set

Point Adjustment

Indoor Air

Quality Sensor

OAT

PNK

VIO

YEL

BLU

Economi$er2

4 - 20mA

BLK

RED

WHT

PremierLink

GRN

YEL

BLU

Outdoor Air

Quality Sensor

Power Exhaust/Energy Recycler

CCN

Comm.

RMTOCC

SFS

CMPSAFE

FSD

RTU Terminal

Board

TR TR1

RED

BRN

BLK

RED

GRAY

OUTDOOR AIR

ENTHALPY SENSOR

RETURN AIR

ENTHALPY

SENSOR

PREMIERLINK

CONTROL

PREMIERLINK

COVER

HINGED

DOOR

PANEL

LEGEND

COMMS — Communications

OAT — Outdoor Air Temperature Sensor

PWR — Power

SAT — Supply Air Temperature Sensor

Fig. 16 — Typical PremierLink Controls Wiring

Fig. 15B — PremierLink™ Controller (Installed)

Enthalpy Sensors and Control — The enthalpy control

(HH57AC077) is supplied as a field-installed accessory to be

used with the economizer damper 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

differential enthalpy control to work properly.

The enthalpy control receives the indoor and return

enthalpy from the outdoor and return air enthalpy sensors and

provides a dry contact switch input to the PremierLink™

controller. Locate the controller in place of an existing econo-

mizer controller or near the actuator. 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 minimum position.

Outdoor Air Enthalpy Sensor/Enthalpy Controller

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

perform the following (see Fig. 17 and 18):

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

of the enthalpy controller and mounted remotely.

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

enthalpy control to the PremierLink controller and power

transformer.

2. Connect the following 4 wires from the wire harness

located in rooftop unit to the enthalpy controller:

a. Connect the BRN wire to the 24 vac terminal (TR1)

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 sensor.

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

provided from the control section to the economizer to connect

PremierLink controller to terminals 2 and 3 on enthalpy sensor.

If NOT using Carrier equipment, wires may need to be field

supplied and installed.

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 enthalpy changeover set point is set at the controller.

To wire the return air enthalpy sensor, perform the follow-

ing (see Fig. 17):

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 from 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 controller. Connect the BLK

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

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

BRACKET

C7400A1004

Fig. 18 — Differential Enthalpy Control,

Sensor and Mounting Plate (33AMKITENT006)

HH57AC077

ENTHALPY

CONTROL AND

OUTDOOR AIR

ENTHALPY

SENSOR

HH57AC078 ENTHALPY

SENSOR (USED WITH

ENTHALPYCONTROL

FOR DIFFERENTIAL

ENTHALPYOPERATION)

MOUNTING PLATE

LED

ABC

TR TR1

BRN

RED

GRAY/ORN

GRAY/RED

WIRE HARNESS

IN UNIT

BLK

RED

(RETURN AIR

ENTHALPY

SENSOR)

(OUTDOOR

AIR

ENTHALPY

SENSOR)

ENTHALPY CONTROLLER

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-

door airstream.

Fig. 17 — Outdoor and Return Air Sensor Wiring

Connections for Differential Enthalpy Control

OPTIONAL ECONOMI$ER IV AND ECONOMI$ER2 —

See Fig. 19 for EconoMi$er IV component locations. See

Fig. 20 for EconoMi$er2 component locations.

NOTE: These instructions are for installing the optional

EconoMi$er IV and EconoMi$er2 only. Refer to the accessory

EconoMi$er IV or EconoMi$er2 installation instructions when

field installing an EconoMi$er IV or EconoMi$er2 accessory.

1. To remove the existing unit filter access panel, raise the

panel and swing the bottom outward. The panel is now

disengaged from the track and can be removed. See

Fig. 21.

2. The box with the economizer hood components is

shipped in the compartment behind the economizer. The

EconoMi$er IV controller is mounted on top of the

EconoMi$er IV in the position shown in Fig. 19. The

optional EconoMi$er2 with 4 to 20 mA actuator signal

control does not include the EconoMi$er IV controller.

To remove the component box from its shipping position,

remove the screw holding the hood box bracket to the top

of the economizer. Slide the hood box out of the unit. See

Fig. 22.

3. The indoor coil access panel will be used as the top of the

hood. Remove the screws along the sides and bottom of

the indoor coil access panel. See Fig. 23.

4. Swing out indoor coil access panel and insert the hood

sides under the panel (hood top). Use the screws provided

to attach the hood sides to the hood top. Use screws pro-

vided to attach the hood sides to the unit. See Fig. 24.

5. Remove the shipping tape holding the economizer baro-

metric relief damper in place.

IMPORTANT: If the power exhaust accessory is to be

installed on the unit, the hood shipped with the unit will not

be used and must be discarded. Save the aluminum filter

for use in the power exhaust hood assembly.

ECONOMI$ER2

PLUG

BAROMETRIC

RELIEF

DAMPER

OUTDOOR

AIR HOOD

HOOD

SHIPPING

BRACKET

GEAR DRIVEN

DAMPER

Fig. 19 — EconoMi$er IV Component Locations

ECONOMI$ER IV

CONTROLLER

OUTSIDE AIR

TEMPERATURE SENSOR

LOW AMBIENT

SENSOR

ACTUATOR

WIRING

HARNESS

Fig. 20 — EconoMi$er2 Component Locations

FILTER ACCESS PANEL

INDOOR COIL ACCESS PANEL

Fig. 21 — Typical Access Panel Locations

HoodBox

HOOD BOX

BRACKET

Fig. 22 — Hood Box Removal

SIDE

PANEL

INDOOR

COIL

ACCESS

PANEL

INDOOR

COIL

ACCESS

PANEL

CAULK

HERE

TOP

SIDE

PANEL

Fig. 23 — Indoor Coil Access Panel Relocation

6. Insert the hood divider between the hood sides. See

Fig. 24 and 25. Secure hood divider with 2 screws on

each hood side. The hood divider is also used as the bot-

tom filter rack for the aluminum filter.

7. Open the filter clips which are located underneath the

hood top. Insert the aluminum filter into the bottom filter

rack (hood divider). Push the filter into position past the

open filter clips. Close the filter clips to lock the filter into

place. See Fig. 25.

8. Caulk the ends of the joint between the unit top panel and

the hood top. See Fig. 23.

9. Replace the filter access panel.

10. Install all EconoMi$er IV accessories. EconoMi$er IV

wiring is shown in Fig. 26. EconoMi$er2 wiring is shown

in Fig. 27.

Barometric flow capacity is shown in Fig. 28. Outdoor air

leakage is shown in Fig. 29. Return air pressure drop is shown

in Fig. 30.

TOP

PANEL

INDOOR COIL

ACCESS PANEL

24 9/16”

SCREW

HOOD DIVIDER

LEFT

HOOD

SIDE

40 3/8”

Fig. 24 — Outdoor-Air Hood Construction

22 1/4”

DIVIDER

BAROMETRIC

RELIEF

CLEANABLE

ALUMINUM

FILTER FILTER

HOOD

FILTER

CLIP

OUTSIDE

AIR

Fig. 25 — Filter Installation

FOR OCCUPANCY CONTROL

REPLACE JUMPER WITH

FIELD-SUPPLIED TIME CLOCK

LEGEND

DCV— Demand Controlled Ventilation

IAQ — Indoor Air Quality

LA — Low Ambient Lockout Device

OAT — Outdoor-Air Temperature

POT— Potentiometer

RAT — Return-Air Temperature

Potentiometer Defaults Settings:

Power Exhaust Middle

Minimum Pos. Fully Closed

DCVMax. Middle

DCVSet Middle

Enthalpy C Setting

NOTES:

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. 26 — EconoMi$er IV Wiring

PINK

VIOLET

BLACK

BLUE

YELLOW

NOTE 1

NOTE 3

RUN

500 OHM

RESISTOR

OPTIONAL CO

SENSOR4-20mA

OUTPUT

50HJ540573

ACTUATOR

ASSEMBLY

RED

WHITE

ECONOMISER2 PLUG

DIRECT DRIVE

ACTUATOR

NOTES:

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

2. PremierLink™ control requires that the standard 50HJ540569 outside-air sensor be replaced by either the CROASENR001A00 dry bulb sensor or HH57A077

enthalpy sensor.

3. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

Fig. 27 — EconoMi$er2 with 4 to 20 mA Control Wiring

Fig. 28 — Barometric Flow Capacity

Fig. 29 — Outdoor-Air Damper Leakage

Fig. 30 — Return-Air Pressure Drop

500

1000

1500

2000

2500

0.05 0.15 0.25

STATIC PRESSURE (in. wg)

FLOW IN CUBIC FEET PER MINUTE (cfm)

0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50

STATIC PRESSURE (in. wg)

FLOW IN CUBIC FEET PER MINUTE (cfm)

1000

2000

3000

4000

5000

6000

0.05 0.10 0.15 0.20 0.25 0.30 0.35

STATIC PRESSURE (in. wg)

FLOW IN CUBIC FEET PER MINUTE (cfm)

ECONOMI$ER IV 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 EconoMi$er IV can

be used for free cooling. The sensor is factory-installed on the

EconoMi$er IV in the outdoor airstream. See Fig. 19. The op-

erating range of temperature measurement is 40 to 100 F.

Supply Air Temperature (SAT) Sensor — The supply air

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

indoor fan. See Fig. 31. This sensor is factory installed. The op-

erating range of temperature measurement is 0° to 158 F. See

Table 6 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 sealed from moisture.

Table 6 — Supply Air Sensor Temperature/

Resistance Values

Outdoor Air Lockout Sensor — The Economi$er IV is

equipped with an ambient temperature lockout switch located

in the outdoor air stream which is used to lockout the compres-

sors below a 42 F ambient temperature. See Fig. 19.

ECONOMI$ER IV CONTROL MODES

Determine the EconoMi$er IV control mode before set up of

the control. Some modes of operation may require different sen-

sors. Refer to Table 7. The EconoMi$er IV is supplied from the

factory with a supply air temperature sensor and an outdoor air

temperature sensor. This allows for operation of the

EconoMi$er IV with outdoor air dry bulb changeover control.

Additional accessories can be added to allow for different types

of changeover control and operation of the EconoMi$er IV and

unit.

Table 7 — EconoMi$er IV Sensor Usage

*CRENTDIF004A00 and CRTEMPSN002A00 accessories are

used on many different base units. As such, these kits may con-

tain parts that will not be needed for installation.

†33ZCSENCO2 is an accessory CO2sensor.

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

mounted applications.

††CRCBDIOX005A00 is an accessory that contains both

33ZCSENCO2 and 33ZCASPCO2 accessories.

Outdoor Dry Bulb Changeover — The standard controller is

shipped from the factory configured for outdoor dry bulb

changeover control. The outdoor air and supply air temperature

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

outdoor temperature is compared to an adjustable set point

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

the set point, the EconoMi$er IV 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 air. 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. 32. The scale on the potentiometer is A,

B, C, and D. See Fig. 33 for the corresponding temperature

changeover values.

TEMPERATURE (F) RESISTANCE (ohms)

–58 200,250

–40 100,680

–22 53,010

–4 29,091

14 16,590

32 9,795

50 5,970

68 3,747

77 3,000

86 2,416

104 1,597

122 1,080

140 746

158 525

176 376

185 321

194 274

212 203

230 153

248 116

257 102

266 89

284 70

302 55

IMPORTANT: The optional EconoMi$er2 does not

include a controller. The EconoMi$er2 is operated by a 4 to

20 mA signal from an existing field-supplied controller

(such as PremierLink™ control). See Fig. 27 for wiring

information.

APPLICATION

ECONOMI$ER IV WITH OUTDOOR AIR

DRY BULB SENSOR

Accessories Required

Outdoor Air

Dry Bulb

None. The outdoor air dry bulb sensor

is factory installed.

Differential

Dry Bulb CRTEMPSN002A00*

Single Enthalpy HH57AC078

Differential

Enthalpy

HH57AC078

and

CRENTDIF004A00*

CO2for DCV

Control using a

Wall-Mounted

CO2Sensor

33ZCSENCO2

CO2for DCV

Control using a

Duct-Mounted

CO2Sensor

33ZCSENCO2†

and

33ZCASPCO2**

CRCBDIOX005A00††

SUPPLY AIR

TEMPERATURE

SENSOR

MOUNTING

LOCATION

SUPPLY AIR

TEMPERATURE

SENSOR

Fig. 31 — Supply Air Sensor Location

Differential Dry Bulb Control — For differential dry bulb

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

tion with an additional accessory dry bulb sensor (part number

CRTEMPSN002A00). The accessory sensor must be mounted

in the return airstream. See Fig. 34. Wiring is provided in the

EconoMi$er IV wiring harness. See Fig. 26.

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 enthalpy set point potentiometer

fully clockwise to the D setting. See Fig. 32.

Outdoor Enthalpy Changeover — For enthalpy control, ac-

cessory enthalpy sensor (part number HH57AC078) is re-

quired. Replace the standard outdoor dry bulb temperature sen-

sor with the accessory enthalpy sensor in the same mounting

location. See Fig. 19. When the outdoor air enthalpy rises

above the outdoor enthalpy 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 EconoMi$er IV controller. The

set points are A, B, C, and D. See Fig. 35. The factory-installed

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

on the EconoMi$er IV controller. See Fig. 19 and 36.

Differential Enthalpy Control — For differential enthalpy

control, the EconoMi$er IV controller uses two enthalpy sen-

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

side air and one in the return air duct. The EconoMi$er IV

controller compares the outdoor air enthalpy to the return air

enthalpy to determine EconoMi$er IV use. The controller

selects the lower enthalpy air (return or outdoor) for cooling.

For example, when the outdoor air has a lower enthalpy than

the return air, the EconoMi$er IV opens to bring in outdoor air

for free cooling.

Replace the standard outside air dry bulb temperature sen-

sor with the accessory enthalpy sensor in the same mounting

location. See Fig. 19. Mount the return air enthalpy sensor in

the return air duct. See Fig. 34. Wiring is provided in the

EconoMi$er IV wiring harness. See Fig. 26. The outdoor en-

thalpy changeover set point is set with the outdoor enthalpy set

point potentiometer on the EconoMi$er IV controller. When

using this mode of changeover control, turn the enthalpy set-

point potentiometer fully clockwise to the D setting.

Indoor Air Quality (IAQ) Sensor Input — The IAQ input

can be used for demand control ventilation control based on the

level of CO2measured 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

AQ1 terminals of the controller. Adjust the DCV potentiome-

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

quality sensor at the user-determined set point. See Fig. 37.

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

IAQ sensor, the sensor must not be grounded or the

EconoMi$er IV control board will be damaged.

Fig. 32 — EconoMi$er IV Controller Potentiometer

and LED Locations

LED ON

LED OFF

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

DEGREES FAHRENHEIT

Fig. 33 — Outside Air Temperature

Changeover Set Points

ECONOMI$ER IV

CONTROLLER

GROMMET

RETURN AIR

SENSOR

RETURN DUCT

(FIELD-PROVIDED)

Fig. 34 — Return Air Temperature or Enthalpy

Sensor Mounting Location

CONTROL

CURVE

CONTROL POINT

APPROX. °F (°C)

AT 50% RH

73 (23)

70 (21)

67 (19)

63 (17)

12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46

100

ENTHALPY—BTU PER POUND DRY AIR

(29) 90

(32) 95

(35) 100

(38) 105

(41) 110

(43)

(2)

(4)

105

(41) 110

(43)

(7)

(10)

(13)

(16)

(18)

(21)

(24)

(27)

(29) 90

(32) 95

(35) 100

(38)

APPROXIMATE DRY BULB TEMPERATURE— °F (°C)

RELATIVE HUMIDITY (%)

HIGH LIMIT

CURVE

TR1

24 Vac

COM

Vac

HOT

EF EF1

EXH

2V 10V

EXH

Set

2V 10V

DCV

Free

Cool

SO+

SR+

AQ1

DCV

Min

Pos

Open

Max

1000

2000

3000

4000

5000

6000

2345678

800 ppm

900 ppm

1000 ppm

1100 ppm

RANGE CONFIGURATION (ppm)

DAMPER VOLTAGE FOR MAX VENTILATION RATE

CO SENSOR MAX RANGE SETTING

Fig. 35 — Enthalpy Changeover Set Points

Fig. 36 — EconoMi$er IV Control

Fig. 37 — CO2Sensor Maximum Range Setting

Exhaust Set Point Adjustment — The exhaust set point will

determine when the exhaust fan runs based on damper position

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

fied with the Exhaust Fan Set Point (EXH SET) potentiometer.

See Fig. 32. The set point represents the damper position above

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

for exhaust, the EconoMi$er IV controller provides a 45 ± 15

second delay before exhaust fan activation to allow the damp-

ers to open. This delay allows the damper to reach the appro-

priate position to avoid unnecessary fan overload.

Minimum Position Control — There is a minimum damper

position potentiometer on the EconoMi$er IV controller. See

Fig. 32. The minimum damper position maintains the mini-

mum airflow into the building during the occupied period.

When using demand ventilation, the minimum damper 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 allow 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:

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-air temperature is

60 F, and return-air temperature is 75 F.

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

2. Disconnect the supply air sensor from terminals T and

T1.

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

terminals P and P1. If remote damper positioning is being

used, make sure that the terminals are wired according to

Fig. 26 and that the minimum position potentiometer is

turned fully clockwise.

4. Connect 24 vac across terminals TR and TR1.

5. Carefully adjust the minimum position potentiometer

until the measured mixed-air temperature matches the

calculated value.

6. Reconnect the supply air sensor to terminals T and T1.

Remote control of the EconoMi$er IV damper is desirable

when requiring additional temporary ventilation. If a

field-supplied remote potentiometer (Honeywell part number

S963B1128) is wired to the EconoMi$er IV controller, the

minimum position of the damper can be controlled from a re-

mote location.

To control the minimum damper position remotely, remove

the factory-installed jumper on the P and P1 terminals on the

EconoMi$er IV controller. Wire the field-supplied potentiome-

ter to the P and P1 terminals on the EconoMi$er IV controller.

See Fig. 36.

Damper Movement — Damper movement from full open to

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

Thermostats — The EconoMi$er IV control works with con-

ventional thermostats that have a Y1 (cool stage 1), Y2 (cool

stage 2), W1 (heat stage 1), W2 (heat stage 2), and G (fan). The

EconoMi$er IV control does not support space temperature

sensors. Connections are made at the thermostat terminal con-

nection board located in the main control box.

Occupancy Control — The factory default configuration for

the EconoMi$er IV control is occupied mode. Occupied status

is provided by the black jumper from terminal TR to terminal

N. When unoccupied mode is desired, install a field-supplied

timeclock function in place of the jumper between TR and N.

See Fig. 26. When the timeclock contacts are closed, the

EconoMi$er IV control will be in occupied mode. When the

timeclock contacts are open (removing the 24-v signal from

terminal N), the EconoMi$er IV will be in unoccupied mode.

Demand Controlled Ventilation (DCV) — When using the

EconoMi$er IV for demand controlled ventilation, there are

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 cal-

culated to provide the desired fresh air.

Typically the maximum ventilation rate will be about 5 to

10% more than the typical cfm required per person, 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 the fresh air supplied to increase as the room CO2

level increases even though the CO2set point has not been

reached. By the time the CO2level reaches the set point, the

damper will be at maximum ventilation and should maintain

the set point.

In order to have the CO2sensor control the economizer

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

put for minimum or base ventilation. Base ventilation is the

ventilation required to remove contaminants during unoccu-

pied periods. The 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.

TO= Outdoor-Air Temperature

OA = Percent of Outdoor Air

TR= Return-Air Temperature

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. 37

to determine the maximum setting of the CO2sensor. For ex-

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

sign. Use the 1100 ppm curve on Fig. 37 to find the point when

the CO2sensor 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 CO2sensor should be 1800 ppm. The

EconoMi$er IV controller will output the 6.7 volts from the

(TOxOA )+(TRxRA )=T

100 100

(TOxOA )+(TRxRA )=T

100 100

CO2sensor to the actuator when the CO2concentration in the

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

since the CO2sensor voltage will be ignored by the

EconoMi$er IV controller until it rises above the 3.6 volt set-

ting of the minimum position potentiometer.

Once the fully occupied damper position has been deter-

mined, set the maximum damper 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.

CO2Sensor Configuration —TheCO

2sensor has preset

standard voltage settings that can be selected anytime after the

sensor is powered up. See Table 8.

Use setting 1 or 2 for Carrier equipment. See Table 8.

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 number. See

Table 8.

4. Press Enter to lock in the selection.

5. Press Mode to exit and resume normal operation.

The custom settings of the CO2sensor can be changed any-

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

change the non-standard 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 appear.

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

and press Enter.

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

nine variables, starting with Altitude, until the 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 variable.

Dehumidification of Fresh Air with DCV Control — Infor-

mation from ASHRAE indicates that the largest humidity load

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

a device such as a 62AQ energy recovery unit is added to re-

duce the moisture content of the fresh air 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 commercial applications.

If normal rooftop heating and cooling operation is not ade-

quate for the outdoor humidity level, an energy recovery unit

and/or a dehumidification option should be considered.

Step 7 — Adjust Indoor-Fan Speed — Adjust the

indoor-fan speed to meet jobsite conditions.

For units with electric heat, required minimum cfm is 2250

for 50TFQ008, 2550 for 50TFQ009 and 3000 for 50TFQ012

with the following exceptions:

Table 9 shows indoor-fan motor data. Table 10 shows fan

rpm at motor pulley settings for standard and alternate motors.

Tables 11A and 11B show static pressure for accessories. Refer

to Tables 12-27 to determine fan speed settings. Fan motor

pulleys are factory set for speed shown in Table 1.

To change fan speeds:

1. Shut off the unit power supply and tag disconnect.

2. Loosen the belt by loosening the fan motor mounting

nuts. See Fig. 38 and 39.

3. Loosen the movable pulley flange setscrew (see Fig. 40).

4. Screw the movable flange toward the fixed flange to

increase speed or away from the fixed flange to decrease

speed. Increasing the fan speed increases the load on the

motor. Do not exceed the maximum speed specified in

Table 1.

5. Set the movable flange at nearest keyway of the pulley

hub and tighten the setscrew. (See Table 1 for speed

change for each full turn of the pulley flange.)

Table 8 — CO2Sensor Standard Settings

LEGEND

ppm — Parts Per Million

UNIT UNIT

VOLTAGE

HEATER

UNIT

CONFIG-

URATION

REQUIRED

MINIMUM

CFM

50TFQ012

208/230 42.4 Horizontal 3200

208/230 50.0 Horizontal 3200

460 50.0 Horizontal or

Vertical 3200

575 17.0 Horizontal or

Vertical

2800

51.0 2350

SETTING EQUIPMENT OUTPUT

VENTILATION

RATE

(cfm/Person)

ANALOG

OUTPUT

CO2

CONTROL RANGE

(ppm)

OPTIONAL

RELAY SETPOINT

(ppm)

RELAY

HYSTERESIS

(ppm)

Interface w/Standard

Building Control System

Proportional Any 0-10V

4-20 mA 0-2000 1000 50

2Proportional Any 2-10V

7-20 mA 0-2000 1000 50

3Exponential Any 0-10V

4-20 mA 0-2000 1100 50

Economizer

Proportional 15 0-10V

4-20 mA 0-1100 1100 50

5Proportional 20 0-10V

4-20 mA 0- 900 900 50

6Exponential 15 0-10V

4-20 mA 0-1100 1100 50

7Exponential 20 0-10V

4-20 mA 0- 900 900 50

8Health &Safety Proportional — 0-10V

4-20 mA 0-9999 5000 500

9Parking/Air Intakes/

Loading Docks Proportional — 0-10V

4-20 mA 0-2000 700 50

To align the fan and motor pulleys:

1. Loosen the fan pulley setscrews.

2. Slide the fan pulley along the fan shaft.

3. Make angular alignment by loosening the motor from the

mounting plate.

To adjust belt tension:

1. Loosen the fan motor mounting nuts.

2. Sizes 008 and 009 — Slide the motor mounting plate

away from the fan scroll for proper belt tension (1/2-in.

deflection with 5 to 10 lb of force) and tighten the mount-

ing nuts (see Fig. 38).

Size 012 — Slide the motor mounting plate downward to

tighten belt tension (1/2-in. deflection with 5 to 10 lb of

force). Secure the motor mounting plate nuts. See Fig. 39.

3. Adjust the bolt and nut on the mounting plate to secure

the motor in fixed position.

Table 9 — Fan Motor Performance

LEGEND

BHP — Brake Horsepower

*Extensive motor and electrical testing on these units ensures that the full horsepower range of the

motors can be utilized with confidence. Using fan motors up to the horsepower ratings shown in

this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be

affected.

UNIT

50TFQ

INDOOR-FAN

MOTOR

UNIT

VOLTAGE

MAXIMUM ACCEPTABLE

CONTINUOUS BHP*

MAXIMUM ACCEPTABLE

OPERATING WATTS

MAXIMUM

AMP DRAW

008

Standard,

Alternate

208/230

2.40 2120

6.0

460 3.0

575 3.0

High Static

208/230

3.70 3313

11.7

460 5.5

575 5.5

009

Standard

208/230

2.40 2120

6.0

460 3.0

575 3.0

High Static

208/230

3.70 3313

11.7

460 5.5

575 5.5

012

Standard

208/230

2.40 2120

6.0

460 3.0

575 3.0

Alternate

208/230

2.90 2615

8.6

460 3.9

575 3.9

High Static

208/230

5.25 4400

17.3

460 8.5

575 8.5

MOTOR MOUNTING

PLATE NUTS

Fig. 38 — Typical Belt-Drive Motor Mounting for

Size 008 and 009

Fig. 39 — Typical Belt-Drive Motor Mounting for

Size 012

Fig. 40 — Indoor-Fan Pulley Adjustment

Table 10 — Fan Rpm at Motor Pulley Settings*

*Approximate fan rpm shown.

†Indicates standard motor and drive package.

**Indicates alternate drive package only.

††Indicates high-static motor and drive package.

Table 11A — Electric Heater Static Pressure* (in. wg) — 50TFQ008-012

*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 Performance tables to deter-

mine blower rpm and watts.

Table 11B — EconoMi$er IV and EconoMi$er2 Static Pressure* (in. wg) — 50TFQ008-012

*The static pressure must be added to external static pressure. The sum and the outdoor

entering-air cfm should then be used in conjunction with the Fan Performance tables to

determine blower rpm and watts.

UNIT

50TFQ

MOTOR PULLEY TURNS OPEN

01/211

1/222

1/233

1/244

1/255

1/26

008† 840 815 790 765 740 715 690 665 635 615 590 — —

008** 935 910 885 860 835 810 785 760 735 710 685 — —

008†† 1080 1025 1007 988 970 952 933 915 897 878 860 — —

009† 935 910 885 860 835 810 785 760 735 710 685 — —

009†† 1080 1025 1007 988 970 952 933 915 897 878 860 — —

012† 935 910 885 860 835 810 785 760 735 710 685 — —

012** 1085 1060 1035 1010 985 960 935 910 885 860 835 — —

012†† 1130 1112 1087 1062 1037 1012 987 962 937 912 887 862 830

COMPONENT CFM

2250 2500 3000 3500 4000 4500 5000 5500 6000 6250

1 Heater Module 0.02 0.03 0.05 0.07 0.08 0.10 0.12 0.14 0.16 0.17

2 Heater Modules 0.03 0.05 0.07 0.09 0.12 0.14 0.16 0.19 0.21 0.20

COMPONENT CFM

2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 6250

Vertical EconoMi$er IV and EconoMi$er2 0.06 0.075 0.09 0.115 0.13 0.15 0.17 0.195 0.22 0.25 0.285 0.325 0.36 —

Horizontal EconoMi$er IV and EconoMi$er2 — 0.1 0.125 0.15 0.18 0.21 0.25 0.275 0.3 0.34 0.388 — — —

Table 12 — Fan Performance, 50TFQ008 — Vertical Discharge Units; Standard Motor and Drive*

LEGEND

*Motor drive range: 590 to 840 rpm. All other rpms require field-

supplied drive.

Refer to page 43 General Fan Performance Notes.

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

AIRFLOW

(Cfm)

EXTERNAL STATIC PRESSURE (in. wg)

0.2 0.4 0.6 0.8 1.0

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

2250 511 0.58 538 591 0.75 697 660 0.93 864 722 1.12 1041 779 1.32 1228

2300 519 0.61 567 597 0.78 729 666 0.97 900 727 1.16 1079 784 1.36 1268

2400 534 0.68 630 611 0.86 798 678 1.04 974 739 1.24 1158 794 1.45 1352

2500 550 0.75 698 624 0.93 872 690 1.13 1053 750 1.33 1243 805 1.55 1441

2550 557 0.79 733 631 0.98 910 697 1.17 1095 756 1.38 1287 811 1.60 1488

2600 565 0.83 770 638 1.02 950 703 1.22 1138 762 1.43 1333 816 1.65 1536

2700 581 0.91 848 652 1.11 1034 716 1.32 1228 774 1.53 1428 828 1.75 1636

2800 597 1.00 932 667 1.21 1124 729 1.42 1323 786 1.64 1529 839 1.87 1742

2900 613 1.09 1020 681 1.31 1220 743 1.53 1425 799 1.75 1636 851 1.99 1855

3000 629 1.20 1115 696 1.42 1321 756 1.64 1532 812 1.88 1749 863 2.12 1973

3100 646 1.30 1217 711 1.53 1428 770 1.76 1645 825 2.00 1869 875 2.25 2098

3200 662 1.42 1324 726 1.65 1542 784 1.89 1765 838 2.14 1994 888 2.39 2229

3300 679 1.54 1438 741 1.78 1663 798 2.03 1892 851 2.28 2126 —— —

3400 695 1.67 1558 756 1.92 1790 812 2.17 2025 — — — — — —

3500 712 1.81 1686 772 2.06 1923 827 2.32 2165 — — — — — —

3600 729 1.95 1820 787 2.21 2065 — — — — — — — — —

3700 746 2.10 1962 803 2.37 2213 — — — — — — — — —

3750 754 2.18 2036 — — — — — — — — — — — —

AIRFLOW

(Cfm)

EXTERNAL STATIC PRESSURE (in. wg)

1.2 1.4 1.6 1.8 2.0

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

2250 831 1.53 1423 880 1.74 1627 927 1.97 1840 971 2.21 2061 —— —

2300 836 1.57 1465 885 1.79 1671 931 2.02 1886 975 2.26 2109 —— —

2400 846 1.67 1554 895 1.89 1764 941 2.13 1982 984 2.37 2209 —— —

2500 856 1.77 1647 905 2.00 1862 950 2.24 2085 —— — —— —

2550 862 1.82 1697 910 2.05 1913 955 2.29 2138 —— — —— —

2600 867 1.87 1747 915 2.11 1966 960 2.35 2193 —— — —— —

2700 878 1.99 1852 925 2.23 2076 —— — —— — —— —

2800 889 2.11 1963 936 2.35 2192 —— — —— — —— —

2900 900 2.23 2080 ————————————

3000 912 2.36 2204 ————————————

3100 ————— — —— — —— — —— —

3200 ————— — —— — —— — —— —

3300 ————— — —— — —— — —— —

3400 ————— — —— — —— — —— —

3500 ————— — —— — —— — —— —

3600 ————— — —— — —— — —— —

3700 ————— — —— — —— — —— —

3750 ————— — —— — —— — —— —

Bhp — Brake Horsepower Input to Fan

Watts — Input Watts to Motor

Table 13 — Fan Performance, 50TFQ008 — Vertical Discharge Units; Alternate Motor and Drive*

LEGEND

*Motor drive range: 685 to 935 rpm. All other rpms require field-