CARRIER Package Units(both Units Combined) Manual L0606342

48TM016-028 L0606342

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

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48TM016-028
Single-Package Rooftop Units
Electric Cooling/Gas Heating

Installation, Start-Up and Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ........................
1
INSTALLATION ..................................
2-32
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 ...............
11
Step 4 -- Make Unit Duct Connections
...........
11
Step 5 -- Install Flue Hood and Wind Baffle ...... 1;
Step 6 -- Trap Condensate Drain .................
11
Step 7 -- Orifice Change ..........................
12
Step 8- Install Gas Piping .......................
13
Step 9 -- Make Electrical Connections
...........
13
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
• OPTIONAL NON-FUSED DISCONNECT
• OPTIONAL CONVENIENCE OUTLET
Step 10- Make Outdoor-Air Inlet
Adjustments .....................................
16
• MANUAL OUTDOOR-AIR DAMPER
Step 11 -- Install Outdoor-Air Hood ..............
16
Step 12- Install All Accessories ...............
17
• MOTORMASTER® I CONTROL INSTALLATION
• MOTORMASTER V CONTROL INSTALLATION
Step 13- Adjust Factory-Installed Options ..... 19
• PREMIERLINK TM CONTROL
• ENTHALPY SWITCH/RECEIVER
• OUTDOOR ENTHALPY CONTROL
• DIFFERENTIAL ENTHALPY CONTROL
• OPTIONAL ECONOMISERIV AND ECONOMISER2
• ECONOMISERIV STANDARD SENSORS
• ECONOMISERIV CONTROL MODES
Step 14 -- Install Humidistat for
Optional MoistureMi$er TM Package ............
31
START-UP ....................................
33-43
SERVICE .....................................
43-50
TROUBLESHOOTING .........................
51-56
INDEX ...........................................
57
START-UP CHECKLIST ........................
CL-I
SAFETY

CONSIDERATIONS

Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electric_d components. Only trained and qualified service personnel should install, repaik or service ai>conditioning equipment.

Manufacturer

Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filtel.s. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, obselwe 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 _dl brazing operations.

Before performing service or maintenance
operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.

What to do if you smell gas:
1. DO NOT try to 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 neighbor's phone. Follow the gas supplier's instructions.
4.

No. 04-53480016-01

Printed in U,S.A,

If you cannot reach your gas supplier,
department.

c_fll the fire

Disconnect gas piping from 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 isohtted by
closing the manu_d gas valve(s).

limits are exceeded, the units will automatically
lock the
corupressor out of operation. Manual reset will be required
I IMPORTANT: Units have high ambient operating limits. If
to restart the compressor:

reserves the right to discontinue, or change at any time, specifications
Catalog

Improper installation, 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.
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.

or designs without notice and without incurring obligations.

Form 48TM-4SI

Pg 1

3-06

Replaces:

48TM-3SI

I
I

INSTALLATION
Inspect unit for transportation damage. If &_mage is found,
file any claim with the 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. I-2B. Install insulation,
cant strips, roofing, and counter flashing as shown. Ductwork
can be installed to roof curb or horizontal adapter roof curb before unit is set in place. Curb or a&tpter roof curb should be
level. This is necessary to permit unit drain to function properly. Unit leveling tolerance is + l/ir_ in. per linear fl in any direction. Refer to Accessory Roof Curb or Horizontal A&_pter
Roof Curb Inst_fllation 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. 2A and 2B. Improperly applied gasket can also
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. Support 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--

Level by using unit frmne as a reference; leveling tolenmce is _+
_/lr_in. per linem fl in any direction. See Fig. 3 for additional 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.
NOTE: On 48TM028 units, the lower forklift braces must
be removed prior to setting unit on roof curb.
POSITIONINGMaintain clearance, per Fig. 4-6, _u'ound
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 ventilation 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 Standards Institute).
Although unit is weatherproof,
higher level runoff and overhangs.

guard against

water from

Ix)cate mechanical di'aft system flue assembly at least 4 il
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 assembly must be at least 7 11 above grade. Ix)cate unit at least 10 1l
away from adjacent units.
ROOF MOUNT -bution requirements.
Table 1.

Check building codes for weight distriUnit operating weight is shown in
hlstructions

continued

on page ll.

Do not drop unit;

keep upright. Use spreader bars over unit to prevent sling or cable &image. Rollers may be used to move unit across a roof.

25% VENTAIR//
ECONOMIZER
HOOD

LOC -O P
I
I
I

///

HORIZONTAL
SUPPLY
CURB (CRRFCURB013A00)

TRANSITION

FULLYINSULATED
SUPPLYPLENUM

14-314 _

32_]
,

!t]//

143/4"/

2"uXI_)RTTYP.

11"11/NSUDL_TIsINy,
STI,IK PINN?D & _UED
Z

23"

12" WIDE STANDING
SEAM PANELS
ACCESSORY

CURB

PACKAGE NO.

HEIGHT.

CRRFCURB013A00]

Fig. 1 -- Horizontal Supply/Return

STITCH WELDED/

NOTE: CRRFCURB013A00
is a fully factory preassembled horizontal adapter and includes an insulated transition duct. The pressure drop through the adapter curb is negligible.
For horizontal return applications: The power exhaust and barometric relief dampers must be installed in the return air duct.

DUCT

(584)

DESCRIPTION

]

Pre-Assembled, Roof Curb,
Horizontal Adapter

Adapter Installation (48TM016-025)

NOTES_
1
BOBff CLJRB ACCBB (}BY /
Bi
PPLD O[ AS7 v:q F';.
2.
]NBUtA[ED
PANFL5_
I"
THICK
N_OPREkE
CBArLn
3
D]MFNSi0NS
IN
( ) AR _ iN Mil
]_ETEI_S_
4_ _:_:s_ DIRECT _0N OR A[i/
FI OW

i¸¸//2

'..,4

3/4"

(44J

/
/
/
/

NON.
/4"
X 4"
(32)
X (102)
IYP,
4 Pl C5
O"

] SUL/>YEO PANEL O7i
]DE
SUPPL Y AND RETURN
(CRRFCUR_B]
2AO0
ONLY}
i/4

_
FI

I
(44)

? i/[6
(i703_

Fig. 2A

Roof Curb Details

48TM016-025

{) SUI>L

DUCI
D

.....
,CAN/

SR]I
>
SUP>L [ED)

[}ENB[TY

ROOFCURB

CURB

A CESSOR,
NE,O.,
OESC I.ION
RR'CUROO
.SO,,,.AO0
H,OH

....
6

D 1/4"

'-I

DI'_END[ONS

(DECREES AND INCHES)

UNIT

DE6.

IN.

DEG.

IN.

ALL

.28

.45

.28

.43

MAX
FROM

CURB
EDGE

LEVELING
OF

UNIT

TOLERANCES:
TO

HORIZONTAL
_---COMPREBSOR AD
CO DENSER ENC

/ is/)6 t

i//0_
i122621

INSULA"_D

UPPLY

OPEN'NG

PANEl

CURB

7 17!16 '1
J

(584)
COR{)FNSATR BRAi_

_3/'D

?
(CAS KEEP
ENTRYTHIS
FOR ANEA
6AS CLEAR
F_REB

FOR
POWER_I_
ROOPTOPS/

NOTES:
I+ R_FCURB ACCESSORY IS SHIPPED DISASSEMBLED.
2. DIXENSlOUS IN (I ARE IN WILLIWETERS.
3. [222_DIRECTION
OF AIRFLOW.

(/321

NAIL

4. ROOF CURB: IG OA. )VA03-56} STEEL.
5. TO PREVENT TXE HAZARD OF STAONANT WATER BUILD-UP IN THE DRAIN PAN
OF fNZ INDOOR SECTION. UNIT CAN ONLY BE PITCHED AS SXOWU.
6. INSULATED PANELS: I" THICK NEOPRENE COATED 1-I12 LB DENSITY.

(SUPPLIED

6ASEET
WITH CURB)
.COUNTER
(FIELD

FLASHING
SUPPLIEOi

ROOFING
FELT
/(FIZLD
SUPPLIED}

FIELD SUPPLIED
_-CANT
(FIELD

STRIP
SUPPLIEOi

ROOFING
MATERIAL
/(FIELD

i14'
/32)

HEIGHT FRO_ TABLE

(2262)_

NOM

5/4"

X 41'

(iBB6/

TYP _ PLACES

Fig. 2B -- Roof Curb Details -- 48TM028

SUPPLIED)

"DETAIL A"

SPR D
RIGGING HOOK

3'-7 1/2"

UNIT BASE RAIL

NOTES:
1. Dimensions in ( ) are in millimeters.
2. Refer to Fig. 4-6 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
48TM
016
020
025
028

DIMENSIONS

MAXIMUM
SHIPPING WEIGHT
Ib
1875
1925

kg
850
873

2035
2445

923
1109

ft-in,

6-111_

2121

4-0

1219

6-111_

2121

3-2

964

6-111_

2121

3-4

1016

6-111_

2121

3-4

1016

Fig. 3 -- Rigging Details

........
CO'_UERO
(99)
O"

i _

/_._

20t

Z/_'DA
7

[

3/15"

:_i"

(04

4 5/

X+AI_HO

@fi_i"

4 /

[

4_])

[

...........
,
l

[

......
////_

/_'_',",

"---

....

_llk'lx/_i]/X

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

6>0"

j
z

/s/SC'S

3 15/

;j._

I _ _ - - --

_i ;+

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

@"
'

[

15/5"

(1)

....

-+_ i -°,o

8i1

})0_

4 ,/1[ 09

:
l

[

J _............/_.._'_
/,,I
•

/1_*
(1707

.....
0[_3_

.........
_

',"_"

i
_
VO\/i
_-_

_iKJ N

J
+

;

J
J

?I
"

1 ./s
°

! !

hO[

+m _2,
, ii |

825

Oi_S

:i
_

i
j

_'_i

(21

/_+
/
'
H_lq

7)
4

COR\ER5

B+i

(i)
\

<@ [228

(61)

(070)

i5 )

-j

O!
A

D R

1-0 E_S)RY
RE 0

F OPO

(

OxY

T 05

3'0

DiMNS]ONS
#i/
ALL)W 0
5/_"

(

(JR[

TIIS

]

9/45
0

O\[Y.

PER"

E-]Oq

T 0

LOK

B£

CO.

UN[

[

NAY P_EVA[

AIR

[+Od.

0> RA] ]0
(J
iPP
CO O.
DE!OER
SN
VR AOI5
WEN

TO U

L EMOW_L

OU_ ;:,s
!N

[OR PR(P[_
(00[NI
(0
]RO
lOX
'_OC[{J

J} _
4"0"
I/ _)
Oz_ P (P
AO _ POWER
T
50
EQ
8"0
(1829 EX"*M
TO ASOL,R
PROPER
:
14 + (3)
TO DOt'SJ
+:1[

EX EPI]ON
OAMPER/>OdER
_ NC
OR

RO0

AL.

s: U,_AC.,
g}

][):

)]M:Ns

ZIPS.

COL

21g

r coM,

W TM
_B
TE
[<[O'AB!

4'0 +
19}

AItD

1:
54)

• [ [
mJ_](NJ;

[} :
/;'0"

• O)KTRO[
OX
]D:
i'6"
Oil
R GROUN) [ SLRIA
}S.
• iO(A
(0
b OR JJR S} C]

"_"

/
;_x_

ROOF: CURB ACC:,
S[_Z

RECI]O

"00N
_'OINoF
)MiLE,OX

J
:

:OR
(

° '°"
,w h

• lOT
CAL

• RIOHJ
DAMP
"TOP:

/
TYP

TO PRINT

_SIONS

REDU EO TO+o.
,+o_
4"0"

/
I

}:
i

_EF R
)In

.
D{UI_(RK
0 [l
. .R_R:
]N[
Uq 7"0 [£ARA
+ (2

I?_3
1

"h
J .

ii)
'_/.....

18i K
"

?
"

;_(g

i IU

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

_'J

Y
_

41 <

I O_

.
.is

_
"

OPER,STIOP.
\0
[;1\6

5URFA

CUR)

ES,

COCR

[{ WA[

LEA /-!1 E OR
IME
ONDE/',
R tOiL
EX AUST _
SATED
k fOE
# +
/q_(IC_,D
RGJRE5
sO Cl AW41
_

FI/O_

!IOE
#OH

CORN
FO_

[

_ >_
0 ) COVER

[R[

) E DE,

0'2"($/)
S
/
I(i2F)
k_O'-ll
(303)

OORNI!R

_ (?÷}

5/I[5"
(339)

j
O"

5 _/

_e
z
]

,%,

_[_@

'NO_CR

/4
kz_

;;/i

:?
_R

/
's

OO]L

i IA
_I

\ tOq
ON

:
Y

,,,,
lv.,

(466)

+,:DwZ Z
B_ROHETR

RFLTEF/>OWER
C
"
y
EIsS } "
N(

FX
-

AUST

_}÷A+\

o"
_7/;'

_ ........................................................"

Fig. 4 -- Base Unit Dimensions J 48TM016,020

_o_,,"

:::: s :::h, _........................
l

\, ,,,'o,,O,E
_

.to,

L_N

/
_/

........................................................
4

t
_)

FCORNERA

CORNER8
TYP
O'-3

(4)
PLC5
7/B"
{££}
7!

(206)

]......
I......
I_ IolcIol

UNIf

5TD. UNIT ECON_EZER

CORNER

DIM A

I I I
OlM B

DIM C

ro._s18,io,
t .....
,T,o
.....
i,,
L....
oI....
].....
I.....
I_;#_i]......
I.....
I
......
,oLD...................
3._7-,._o-

I
0"-4

5/16

"
|

I J]_

,50

81A

-|
I ]

HOLE_

2 " DO

2.
OIMENSION5
IN {)FOR ARE
MILLIMETERS.
NOT_'REFER
TO PRINT
ROOFIN CUR3
ACCESSORY
3,
_
CENTER OF GRAVITY,
4.
_
DIRECTION
OF AIR FLOW.

DIMENSIONS.

3
|l_

TYPICAL
/

_.)

_
S'-11
7/8
(13275_.1[ .

5"-7
3/16"
(1707)

BECTIOI
-

(1753)

TYPICAL

I
I

....
z -z

'
[,_._x_]
)_
I

4"3 _ (1213)
TO COMBUSTIBLE
FRoMREDUCED
REMOVALTHE
TO
TOP,
4"0"
(1213)
IF
BETWEEN
UN
T5

ALL FOUR SIDES
PERMIT
COIL

TOP_
G'O"
(1823)
3OTTOM_
14"
(356)

POWER EXHAUST
(ACCESSORY
ONLY)

SURFACES,
CONSITIONS

COIL
OF

CAN BE

(INCLUDES

AIR

FLOW.

TO ASSURE PROPER CONDENSER FAN OPERATION,
TO COMBUSTIBLE
SURFACES
(WHEN NOT USING

NON-COMBUSTIBLE,
CONTROL
3'6"
(057)
TO UNGROUNDED
BLOCK OR CONCRETE
CONTROL 30X
30X SIDE:
51DE!
3"0"
(314)
TO
SURFACES, WALL5_
OTHER
GROUNDED SURFACES,
LOCAL CODES OR JURISOtCTION
MAY PREVAIL.
WITH THE EXCEPTION
OF CLEARANCE
FOR THE CONDENSER COIL
AND THE DAMPER/POWER
EXHAUST
AS 5TATEO
IN NOTE #6,
A
81MENSIONS
ARE FROM OUTSI3E
OF CORNER POST,
ALLOW 0'-5/16"
(B)
ON EACH SIDE
FOR TOP COVER DRIP

CURB),

EOOE,

3/15"

O'-lO

ROOF
CURB ONLY.
THIS
DIMENSION

OAMPERANOPOWEREX.AUS

4 CORNERS

I
I

DUCTWORK CLEARANCE:
MINIMUM
TO BE ATTACHED
TO ACCESSORY
REAR:
7'0"
(2134)
FOR COIL REMOVAL.

FRONT:
4"0"
(1219)
FOR CONTROL
BOX ACCESS,
LEFT SIDE:
4"0"
(1219)
FOR PROPER
R]GHT
SLOE:
4'3"
(1213)FOR
PROPER CONDENSER
OPERATION

(2187)
7"-2
1/8"

I_1
I
I

6.
S,

TYPICAL
1/4"
D A HOLE
_11 l/_yp

....

--------

--.

VIEW
BAROMETRIC

Z-Z

RELIEF/POWER
(ACCESSORY

EXHAUST

ONLY)

TYP
//

\\
._
_ _
\"\_s,8-_,
_,3-O,ACONCENTR,C_O(B_)
_(_S)
(F,ELD
POWER) /--_O'-_FI

O'-lO(260) 1/4"/_L_

(457)

0'-2

_;°'

{73)

0"-2
(51)

COIL

3/4"
(27)

FPT
FAR

DRAIN
SlOE

(102)
ALTERNATE
CONNECTION
ONLY

0'-3
RETURN

71B_

(SB)
l'-3/1G_
(310}
0'-2
liB'
(54)

,,_.DIA
,.o.{GAS
ENTRY)
_,0"
NPT]\ 3/
\_7,BOIAK.O.
(CONTROL)__
(_8)_,_
8IANOLE
_
\1

0/0_)
"I

(22)

(SB)

Fig. 5 -- Base Unit Dimensions i

5"-6"
(1676)

48TM025

5ECTION

A-A

O'-B

15/16"

_"I_

Z'U2"
O0

4 T

2270 L8

90 LB

532 LB

526 LB

569 LB

593 L8

4*-6"

-7

I/4"

'-I

I/4

I'-7
(504)

k.__.

NOTES

48TH028

1, :REFER
TO PRINT
2, DIMENSIONB
IN

FOR ROOF CURB
ACCESBORY
( ) ARE IN MILLIMETERS.

DIMENSIONS,

,\,SOBIA
DLE
3. CENTENOFBOAV,TY.
--..q
__L. ...... s.O00TNOR<
TO
OE
ATTAC.EO
TO
A=SSOOY
ROOF
CUBO
ONLY.
4.

TYPICAL

•
TYPICAL

"'fYPTCAL

.....

4 CORNERS

0"-3"

0i2o2)
7'-2

1/8"

(2187)

SECTION

A-A

LY
B.

0"-4"_
(102)
DIA
(127)

HOLE

(22)

0'-2_

(303)
'-II

ACCESS

(567)

AIR

r_1,1o

DIRECTION

AIR

FLOW,

YO
813)

(51)
0"-3

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 BIDES
(INCLUDES
BETWEEN UNITS.
LEFT
510E_
4"0*
(1219)
FOR PROPER CONDEN5ER COIL
AIR FLOW.
FRONT:
4"0"
(1219)
FOR CONTROL BOX ACCESS.
RIGHT
SIDE=
4"0"
(1219)
FOR PROPER OPERATION
OF
DAMPER AND POWER EXHAUST
IF SO EOUIPPED.
TOP:
S'O*
(1829)
TO ASSURE PROPER CONDENSER FAN OPERATION.
8OTTO\:
14"
(355)
TO COMBUSTIBLE
SURFACES
(WHEN NOT USING CURB).
CONTROL BOX SLOE!
3"0"
(914)
TO UNGROUNDED SURFACE5,
NON-COMBUSTIBLE.
CONTROL BOX SIDE_
3"6*
(1067)
TO BLOCK OR CONCRETE WALLS,
OR
OTHER GROUNDED SURFACES.
LOCAL CODES OR JURISDICTION
MAY PREVAIL.
WITH THE EXCEPTION
OF CLEARANCE
FOR THE CONDEN5ER COIL
AND THE DAMPER/POWER
EXHAUST
AS STATED
IN NOTE _6,
A
REMOVABLE
FENCE OR BARRICADE
REOUIRE5
NO CLEARANCE.
DIMENSIONS
ARE FROM OUTSIDE
OF CORNER POST.
ALLOW 0'-5/16"
(8)
ON EACH 51DE FOR TOP COVER DRIP EDGE.

ECONOMIZER

2'-1

OPENING

•

OR (79)
HOOD

1'-1

1/8 *_

5115"

(339)

,._s(2#;

i
_-

0"-3
(87)

7/16"

FO'

-3'

c467)

(lO2)
(99)
TYP

3/4"
(4)

0"-2"
(51)

TYP

(27)

FPT

DRAIN

FAR

51DE

-ALTERNATE
CONNECTION
ONLY

Fig. 6

O'-IO
l 14" _--_
(260)

0"-2
7/B _
(73)
0"-3
7/B_
RETURN

(98)
1'-3/15%
(310)
0"-2
ltB
(54)

_718921_1
_1
-

B,O"
<,3,B"
O,A
CONCENTR,C
<.O.
p
# K!3O_)

1,2172DIA
(38)

((EFoINFTLRDoL
pOWER)

(GAS

ENTRY)

5" -6"
(1576)

"_j

Base Unit Dimensions i

K.O+

48TM028

314"

0;53"

NPT

"1(31/4

DIA

HOLE

ONLY)

UNIT WIRING
100
AMP

Insert the disconnect shaft into the squme hole on the disconnect switch. The end of the shaft is specially cut and
the shaft can only be inserted in the correct orientation.

Fig. 16 -- Field Control Thermostat Wiring

Tighten the Allen bolt to lock the shaft into position.
Close the control box dool:

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.

4.
5.

ASSEMBLY

JUMPER

r
[ NON

200
AMP

FUSED

BLK.

WIRING
YEL,

,tt,
DISCONNECT

BLU,

,
LINE

FIELD

POWER

[

5UPPLY

NOTE The disconnect takes the place of TB-1 as shown on the unit wiring dia
gram label and the component
arrangement
label.

Fig. 17 -- Optional

The handle must be in the OFF position to open the control box door

OPTIONAL
CONVENIENCE
OUTLET-On units with
optional convenience
outlet, a 115-v GFI (ground fault interrupt) convenience outlet receptacle is provided for field wiring.
Field wiring should be run through the 7/8-in. knockout provided in the basepan near the return air opening.

Non-Fused

Disconnect

Wiring

Table 5 -- Electrical Data
NOMINAL
VOLTAGE

UNIT
48TM

VOLTAGE
RANGE

(3 Ph, 60 Hz)

025

RLA

LRA

RLA

LRA

FLA leal

FLA

253

32.1

195

20.7

156

0.5

1.7

5.0

15.8/15.8

460

414

508

16.4

0.5

0.8

5.0

7.9

575

518

633

8.2

0.5

0.75

5.0

6.0

187

253

30.1

225

28.8

195

0.5

1.7

5.0

460

414

508

15.5

114

14.7

0.5

0.8

5.0

7.9

575

518

632.5

12.1

10.7

0.5

0.75

5.0

6.0

187

253

239

33.6

225

6.6

7.5

460

414

508

19.2

125

17.3

114

3.3

7,5

13.0

575

518

633

13.8

80.0

13.5

80.0

1.0

3.4

7.5

10.0

187.2

253

20.7

156

20.7

156

47.1

245

0.5

1.7

10.0

460

414

508

19.6

125

0.5

0.8

10.0

14.6

575

517.5

632.5

8.2

15.8

100

0.5

0.8

10.0

13.0

208/230

028

LRA

Qt_/ Hp

LEGEND
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
OFM
RLA

----------

POWER
EXHAUST

IFM

Max

208/230

RLA

OFM

No, 2

187

208/230

020

COMPRESSOR
No. 1A

Min

208/230

016

No, 1

EXAMPLE:

Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
MinimumCircuitAmps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps

15.8/15.8

25.0/25.0

28.0/28.0

4.6
2.3
2.1
4.6
2.3
2.1
4.6
2.3
2.1
4.6

LRA
18.8
6.0
4.8
18.8
6.0
4.8
18.8
6.0
4.8
18.8

2.3
2.1

6
4.8

POWER
SUPPLY

FLA

MCA

MOCP*

0.57

82/82

110/110

0.57

86/86

110/110

0.30

0.57

87/87

110/110

0.57

92/92

110/110

0.30

0.57

124/124

150/150

0.57

129/129

150/150

0.30

0.57

138/138

175/175

0.57

143/143

150/175

0.30

0.57

Supply voltage is 460-3-60.
C

AB = 452 v
AC = 455 v
Average Voltage =
BC = 464 v

=--

*Fuse or HACR circuit breaker.
Determine maximum
(AB) 457 - 452 =
(BC) 464 - 457 =
(AC) 457 - 458 =
Maximum deviation

c t oo

452 + 464 + 455
3
1371
3

= 457
deviation from average voltage.
8 v
7 v
2 v
is 7 v.

Determine

percent voltage imbalance.
7
= 100 x--457
= 1.53%
This amount of phase imbalance is satisfactory
allowable 2%.

_IST_O

% Voltage Imbalance

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 wbere a pbase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percent
voltage imbalance.
% Voltage Imbalance
= 100 x

FLA

COMBUSTION
FAN MOTOR

max voltage deviation from average voltage
average voltage

as it is below the maximum

contact
your local
company
IMPORTANT:
If theelectric
supply utility
voltage
phase immediately.
imbalance is more than 2%,

I
I

Step 10 -ments

Make

Outdoor-Air

Inlet

Adjust-

OUTDOOR-AIR
HOOD AND
MOUNTING BRACKETS

MANUAL OUTDOOR-AIR
DAMPER -- All units (except
those equipped with a factory-inst_dled economizer)
have a
manual outdoor-air &lmper to provide ventilation ail:
Damper can be preset to admit up to 25% outdoor air into
return-air compartment. To adjust, loosen securing screws and
move &tmper to desired setting, then retighten screws to secure
damper (Fig. 18).
25% ADJUSTABLE
AIR DAMPER

FILTER
PACKAGE ANE
HOOD
COMPONENTS
RETURN-AIR
ACCESS PANEL

BASE
UNIT

Fig. 19 -- Outdoor-Air

.HOOD

Hood Component

Location

TOP PANEL

L_
SECURING

Fig. 18-

SCREWS

Standard 25% Outdoor-Air
Section Details
UPPER FILTER.

Step 11 -- Install Outdoor-Air

PAN

Hood
RETAINER

IMPORTANT:
If the unit is equipped with the optional
EconoMiSerIV component, move the outdoor-air temperature sensor prior to installing the outdoor-air hood. See the
Optional EconoMiSerIV
and EconoMiSer2
section for
more information.

SEAL B

Fig. 20 -- Seal

The outdoor-air hood is common to 25% air ventilation,
EconoMiSerIV
and EconoMiSer2.
If EconoMiSerIV
or
EconoMiSer2
is used, all electric¢fl connections have been
made and adjusted at the factory. Assemble and install hood in
the field.

Strip

BAFFLE

NOTE: The hood top panel, upper and lower filter retainel_,
hood &'ain pan, baffle (sizes 025 and 028), and filter support
bracket me secured opposite the condenser end of the unit. The
screens, hood side panels, remaining section of tilter suppori
bracket, seal strip, and htudware me in a package located
inside the return-air filter access panel (Fig. 19).
1. Attach seal strip to upper filter retainer. See Fig. 20.
2.
3.
4.
5.

7.
8.

Location

LOWER FILTER
RETAINER

FILTER SUPPORT
BRACKET

Assemble hood top panel, side panels, upper filter retainel: and drgdn pan (see Fig. 21).
Secure lower filter retainer and support bracket to unit.
See Fig. 21. Leave screws loose on 025 and 028 units.
Slide baffle (sizes 025 and 028) behind lower filter retainer and tighten sclews.
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.

\
\

HOOD SIDE
PANELS (2)

HOOD TOP
PANEL

BAFFLE
(025 AND
028 ONLY)

Match notches in hood top panel to unit top panel screws.
Insert hood flange between top panel flange and unit.
Tighten screws.
Hold hood side panel flanges flat against unit, and inst_fll
screws removed in Step 5.
Insert outdoor-air
inlet screens and spacer in channel
created by lower filter retainer and filter support bracket.

LOWER
FILTER
RETAINER

BRACKET

HOOD DRAIN PAN
UPPER FILTER RETAINER

Fig. 21 -- Outdoor-Air
16

Hood Details

Step 12 -- Install All Accessories

After ;dl the

Accessoiw 0 ° F D_w Ambient Kit -- Install the accessory
low mnbient kit per instruction supplied with accessory.

factory-installed
options have been adjusted, inst;dl all fieldinstalled accessories.
Refer to the accessory
installation
instructions included with each accessory.
MOTORMASTER®
I
CONTROL
INSTALLATION
(48TM016,020,
and 028)
Install Field-Fabricated
Wind Baffles -- Wind baftles must
be field-fabricated
for all units to ensure proper cooling cycle
operation at low mnbient temperatures. See Fig. 22 for baffle
dettfils. Use 20-gage,
galvanized
sheet metal, or similar
conosion-resistant
metal for baftles. Use field-supplied sclews
to attach baffles to unit. Screws should be 1/4-in. diameter and
-s/s-in. long. Drill required screw holes for mounting baffles.

Sensor Assembly -- Install the sensor assembly
shown in Fig. 23.

Motormaster 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, vertically, with leads protruding from bottom of extrusion.

i:I;o°o
i::_oO
o°
i::_ooo
°
:_:_
o°o
l::_oO
o°
:_:_
o°o
l:l;ooo
°
:_:_o
o°o
i:I;ooo
°

i::_o
o°o
SENSOR--I:_o°O
° SENSOR-LOCAT,ON
:_:_o
CoLOCATION
l:I:o°
o°
I::_
o°o
i::_o°o
°
:_:_o
o°o
i:I:o°O
°

WIND

BAFFLE __

BREAK

BAFFLETOP VIEW 1" (25)MIN--_

80-+.02:(2o62
t_°_----4
/

HAIRPIN END
_--Tt10"

48TM016

(254)

40"

(1016

(254)

;(rYP)
"-_-_I_15" (361)
3/4"(19)(YYP)-_
BAFFLEFRONTVIEW
NOTE: Dimensions in ( ) are in ram.
Fig. 22 --

Wind

Baffle

HAIRPIN

END

48TM020

Fig. 23 -- Motormaster®

_10"

SENSOR
LOCATION

HAIRPIN END

48TM028
(Circuits 1and 2)

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

(TYP)
--

----..._.

Install Motormaster
I Controls -- Only one Motormaster
I
control is required for 48TM016 and 020 units. The 48TM028
requires 2 Motormaster
I controls -- one for circuit 1 and
one for circuit 2. The Motormaster I control must be used in
conjunction
with the accessory
0° F low ambient
kit
(purchased sep_uately). The Motorlnaster
[ device controls
outdoor fan no. 1 (and 4 on size 028 units) while outdoor fans
no. 2 and 3 (and 5 and 6 on 028 units) are sequenced off by the
Accessory 0 ° F Low Ambient Kit.

in the location

Motor MountTo ensure proper fan height, leplace the existing motor mount with the new motor mount provided with
accessory.
Trun._wmer (460 and 575-v Units On@) -- On 460 and 575-v
units, a transformer is required. The transformer is provided
with the accesso U and must be field-installed.

To avoid dmnage to the refiigelant coils and electric_d components, use recommended
screw sizes only. Use care
when drilling holes.

___CROSS

0° F

(rYp)

"1" (25) MIN

Details

I Sensor Locations

MOTORMASTER®
V
CONTROL
INSTALLATION
(48TM025 Only)
Install Field-Fabricated
Wind Baftles -- Wind baftles must
be tield-fabricated
for all units to ensure proper cooling cycle
operation at low ambient temperatures. See Fig. 22 for baffle
details. Use 20-gage,
galvanized
sheet metal, or similar
corrosion-resistant
metal for baffles. Use field-supplied screws
to attach baffles to unit. Screws should be l/4-in, diameter and
s/g-in, long. Dill required screw holes for mounting baffles.

FROM FUSE BLOCK

60606
ii

1.2

i,,i

o
o

To avoid dmnage to the refiigerant coils and electrical components, use recommended
screw sizes only. Use cme
when di'illing holes.

B
13B
12

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
refrigerant 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
operate are:

mnbient temperatures

Unit
40
(4)

13C

_'oc_ooo

TOPRESSURE.
TRANSDUCER

m[
GI_)I/y[[

at which the unit will
TO MOTOR(S)

TEMPERATURE
Standard

13A I

OPERATING
Unit with

Low Ambient
25 (-4)

Kit

LIMITS -I
I

Fig. 24 -- Motormaster®

F° (C °)
Unit with
MMV
-20 Control
(-29)

Table 6 --

To operate down to the ambient
telnpemtures
listed,
Motorlnaster
V controls (Fig. 24) must be added. Fieldfabricated and inst_dled wind baffles are also required for all units
(see Fig. 22). The Motormaster V control permits operation of
the unit to an ambient temperature of-20 F (-29 C). The control
regulates the speed of 3-phase fan motors that are compatible
with rite control. These motol_ zue factory installed.

UNIT

48TM016-028

V control

per instructions

V Control

VOLTAGE
208/230-3-60
460-3-60
575-3-60

supplied

Package

Usage

VOLTAGE

ITEM DESCRIPTION

208/230

CRLOWAMB015AOO

460

CRLOWAMB016A0O

575

CRL©WAMBO17AOO

Table 7 -- Applicable

See Table 6 for the Motorlnaster
V control accessory
package usage. Table 7 shows applicable voltages and motors.
Replacement
of fan motor 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
with accessory.

Motormaster

V Control

Voltages

and Motors

COMPATIBLE MOTOR
HDS2AK654
HD52AK654
HD52GE576

Step 13 --Adjust

Factory-Installed

Options

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 file 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.

PREMIERLINK
TM CONTROL
-- The PrelnierLink controller is available as a special order from the facto U and is
compatible with the Carrier Comfort Network® (CCN) system. This control is designed to allow usel_ the access and abilfly to change factou-defined
settings, thus expanding the function of the standmd unit control bomd. CmTier's diagnostic
standard tier display tools such as Navigator r_'_ device or
Scrolling
Marquee
can be used with file PremierLink
controllel:

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.

The PremierLink controller (see Fig. 25) requires the use of
a CmTier electronic thermostat or a CCN connection for time
broadcast to initiate its internal timeclock. This is necessa U for
broadcast of time of day functions (occupied/unoccupied).
No
sensors are supplied with the field-mounted
PremierLink
control. The factory-installed
PremierLink
control includes
only the supply-air temperature (SAT) sensor and the outdoor
air temperature (OAT) sensor as standard. An indoor air quality
(CO2) sensor can be added as an option. Refer to Table 8 for
sensor usage. Refer to Fig. 26 for PremierLink
controller
wiring. The PremierLink
control may be mounted in the
control panel or an area below the control panel.

Outdoor Air Temperature
(OAT) Sensor -- When the unit is
supplied with a factory-mounted
PremierLink
control, the
outdoor-air temperature sensor (OAT) is factory-supplied
and
wired.
Install the Indoor Air Quality (CO2) Sensor -optional indoor air quality (CO2) sensor according
turer specifications.

A sepmate field-supplied
transformer
must be used to
power the CO2 sensol:
Wire the C(_ sensor to the COM and IAQI terminals of J5 on
file PremierLink controflel: Refer to file PremierLink Installation, Start-up, and Configuration Instructions for detailed wiring
and configuration information.

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 control, the supply-tdr temperature (SAT) sensor (33ZCSENSAT)
is factory-supplied
and wired. The wiring is routed fi_m the
PremierLink control over the control box, through a grommet,

HVACSENSOR INPUTS

SPACE'rEMP
_ h'q'

Mount the
to manufac-

................................
TS_T_

SET POINT -._._ L=]_ I
SUPPLY AIR TEMP _
OUTDOOR

TEMP _

_lil

INDOOR

AIR QUALITY

LT_

OUTDOOR

AIR QUALITY

_!]

DUAL MODE SENSOR (STAT)

IJ_

7H: I
COMP SAFETY (Y1) /'_H
FIRE SHUTDOWN

_.2_.,

Premiertink

Ili]

; ]

_' I

°°' -

(Y2) /

SUPPLY

FAN STATUS (Wl) Ja"H
i I
NOT USED (W2) "/'r Iq • I

ENTHALPY

STATUS (ENTH) ../_]_ltot

....

[--]

, ,r"l ,o i-Ior__ ,,= . I ,,-°_-- I I
I [] FTfil U'_l-GqEZZ]hi"W'q_t_'T_q-_f!

,/i1[=-°. --toltio-q.t

CCN/LEN
PORT

)I
NAVIGATOR
PORT

4 20MA/
ECONOMIZER

t
INDOOR
FAN MOTOR

'_
COMPR
1& 2

OUTPUTS

Fig. 25 -- PremierLink Controller

"_._

'_
HEAT
LOW/HIGH

EXHAUST
RVS VALVE

e
,_

BLUE

_LU

BRN

_RN

BLK
GRN .....

PL1 - 5

BRN

PL1 - 6

VIO

PremierLink
Control

_LK
COM

BRN

• ORN

BRN

_R_

SAT

CON

VIO
BRN

BRN

tOM

RE_ _

RED --

COM

[oc
CONTROL

OAT

GRN_
RED
--

Pi K

YEL
GRN

iRED

YEL
RED

RED

BLu

....
BLO
BLU

_LU
£EO FT

RED

FSD

WHT
WHT

RED T

RED

PNK

CLO1

CONTROL

CMP

SAFE

TB2

TSTAT

FSD

SFS

CONTROL

ni!
IlLUL
U

'_THEFIELDTAT

_ ]

RMTCCC

FRONM]_4V

=_)
NOT USED

NOT[

USED

.....

DDC

ECONO

OaN
RED

RED

ECONOMIZER
50TJ401148
(CRECOMZROIOB00)

TB21-

4-20rr_
ECONO

MOTOR

F!R_1i

FROM
_Qc-a
CLO
-CMP
-ECONO-ENTH
-IGC
-MGV
-OAT
-PL
-SAT
-SPT
-TB
--

Fii i

iiiM_r

rviRvl_O_2

_C'_DR

LEGEND
Compressor Lockout
Compressor
Economizer
Enthalpy Sensor
Integrated Gas Unit Controller
Main Gas Valve
Outdoor Air Temperature Sensor
Plug
Supply Air Temperature Sensor
Space Temperature Sensor
Terminal Block

*If PremierLink control is in thermostat mode.
1-TB2 terminal designations for 24 vac discrete
inputs. Default is for DDC control.

Fig. 26 -- Typical PremierLink

Controls Wiring

Table 8 -- PremierLink
APPLICATION

OUTDOOR AIR
TEMPERATURE SENSOR

Differential Dry Bulb
Temperature with
PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Single Enthalpy with
PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Differential Enthalpy
with PremierLink*
(PremierLink
requires 4-20 mA
Actuator)

Sensor

Usage

RETURN AIR
TEMPERATURE SENSOR

OUTDOOR AIR
ENTHALPY SENSOR

RETURN AIR
ENTHALPY SENSOR

Required -33ZCT55S PT

Required -33CSENTHSW
(HH57ZC003)
or
HH57AC077

Required33CSENTSEN
or
HH57AC078

Included -HH79NZ039

or Equivalent

Included -Not Used

*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 F, closes at 50 E

ENTHALPY SWITCH/RECEIVER
-- The accessory
enthalpy switch/receiver
(33CSENTHSW)
senses temperature
and humidity of the air surrounding the device trod calculates
the enthalpy when used without an enthalpy sensol: The relay is
energized when enth_flpy is high and deenergized
when
enthalpy is low (based on ASHRAE [American Society of
Heating, Refrigeration and Air Conditioning Engineersl 90.1
criteria). If an accessory enthalpy sensor (33CSENTSEN)
is
attached to the return air sensor input, then differential enthalpy
is c_flculated. The relay is energized when the enthalpy detected
by the leturn air enthalpy sensor is less than the enth_flpy at the
enthalpy switchheceivel:
The relay is deenergized when the
enth_flpy detected by the leturn air enthalpy sensor is gleater
than the enthalpy at the enflmlpy switch/receiver
(differential
enth_flpy control). See Fig. 27 and 28.

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 switch/receivel:
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 switch/receiver to the terminals on the transformer. On some applications,
the power from the economizer
harness can be used to power the enthalpy switch/receivel:
To
power the enthalpy
switch/receiver
from the economizer
harness, connect power of the enthalpy switch/receiver
to the
red and brown wires (1 and 4) on the economizer harness.

OUTDOOR
ENTHALPY
CONTROL
(Fig. 29) -Outdoor enthalpy control lequires only an enth_flpy switch/
receiver (33CSENTHSW).
The enthalpy switch/receiver
is
mounted in the outdoor air inlet and c_dculates outdoor air
enthalpy. The enthalpy switch/receiver
energizes the relay
output when the outdoor enth_flpy is above 28 BTU/Ib OR din
bulb temperature
is above 75 F and is deenergized
when
the outdoor enthalpy is below 27 BTU/Ib AND dry bulb
temperature is below 74.5 E 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
altitude of 1000 ft above sea level.

is done

For connection to rooftop units with PremierLink TM control,
connect the LOW Enthalpy terminal on the enthalpy switch/
receiver to J4 -- pin 2 of the PremierLink
control on the
HVAC unit. The switch can be powered through the PremierLink control board if desired. Wire the 24 VAC termimfl on the
enth_flpy switch/receiver
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
Enth_flpy terminal is not used. See Fig. 29.

using an average

Mounting -- Mount the enthalpy switch/receiver
in a location
where the outdoor air can be sampled (such as the outdoor air

4253"
(108 03mm)

4 253"
(I 08 03rnm)

25"---_.35rnm)

,25"
(6.35mm)
2_

Fig. 27 -- Enthalpy Switch/Receiver
(33CSENTHSW)

Dimensions

Fig. 28 -- Enthalpy Sensor Dimensions
(33CSENTSEN)

O €
{..........................
I
I
TS_A_r
C_
i

__
BLU
Bu SASP + 5 and economizer
position > 80%,
economizer will go to minimum position for 3 minutes or
until SAT > 68 F.
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 IF.
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)
•
•

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 initial cooling then the
PremierLink controller will modulate the economizer using an
error reduction calculation to hold the space temperature
between the heating and cooling set points. See Fig. 48.

Economizer
is opened 100%.
Compressors
1 and 2 are cycled based on YI and Y2
using minimum on and off times and watching the supply air tempemtme
as compared
to SATLOI
and
SATLO2 set points.

If optional power exhaust is installed, as the outdoor-_fir
damper opens and closes, the power exhaust fans will be energized and deenergized.
If field-inst_dled accessory CO2 sensors are connected to the
PremierLink TM 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
dmnper will be proportionally closed.
HEATING. UNITS WITH ECONOMISER2,
PREMIERLINK
CONTROL AND A THERMOSTAT -- When the thermostat
c_dls for heating, terminal WI is energized. The PremierLink
control will move the economizer dmnper to the minimum
position if there is a c_dl for G and closed if there is a call for
WI without G In order to prevent thermostat from short cycling, the unit is locked into the heating mode for at least
10 minutes when WI is energized. The induced-draft motor is
then energized and the burner ignition sequence begins.

The controller uses the following
economizer cooling:
•
•
•
•
•
•

to determine

Enthalpy is 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 are not met, the economizer
submaster reference (ECSR) is set to maximum limit and the
damper moves to minimum position. The operating sequence
is complete. The ECSR is recalculated every 30 seconds.
If an optional power exhaust is installed, as the outdoor-air
damper opens and closes, the power exhaust fans will be
energized and deenergized.
If field-installed
accessory CO2 sensors me connected to
the PremierLink 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
damper will be increased proportionally.
As the CO2 level
decreases because of the increase in flesh all: the outdoor-air
damper will be proportionally closed.

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,
PREMIERLINK CONTROL
AND A ROOM SENSOR -- When free
cooling is not available, the compressors will be controlled by
the PremierLink controller using a PID Error reduction c_dculation as indicated by Fig 47.

TEMPERATURE

CONTROL

75,
744

The PremierLink controller will use the following information to determine if fiee 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 SPT.
• Enthalpy
must be LOW (may be jumpered
if and
enthalpy sensor is not available).
• Economizer
position is NOT forced.

734
724

...... SET

POINT

71 4
I-W

--TEMPERATURE

704
694

68 J
TIME

NOTE: PremierLink control performs smart staging of 2 stages of DX
cooling and up to 3 stages of heat.

When free cooling is av_filable, the outdoor-air damper is
positioned through the use of a Proportional
Integral (PID)
control process to provide a calculated supply-air temperature
into the zone. The supply air will maint_fin the space temperature between the heating and cooling set points as indicated in
Fig. 48.

Fig. 47 --

The PremierLink will integrate the compressors 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 enor reduction calculations that compare space
temperature and space set point.

DX Cooling Temperature
Control
Example

TEMPERATURE

QC
W

When outdoor-air temperature conditions require the economizer to close for a compressor stage-up sequence, the economizer control integrator is reset to zero after the stage-up
sequence is completed. This prevents the supply-air 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
cooling control, while the economizer space set
c_dculated value between the heating and cooling
The economizer set point will always be at least

conditions

741
73
72

......... _

71t

704 ........

o
69
co

CONTROL

j
_

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

------COOL SETPOINT

TEMPERATURE

---

HEAT

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

TIME

expansion)
point is a
set points.
one degree

Fig. 48 --

Economizer
Temperature
Control Example

SETPOINT

HEATING.
UNITWITHECONOMISER2,
PREMIERLINK
CONTROL
ANDA ROOMSENSOR
-- Every40 seconds
thecontroller
willcalculate
therequired
heatstages
(maximum
of3)tomaintain
supply
airtemperature
(SAT)if thefoflowing
qu_flifying
conditions
alemet:
• Indoorfanhasbeenonforatleast30seconds.
• COOLmodeisnotactive.
• OCCUPIED,
TEMRCOMPENSATED
START
orHEAT
modeisactive.
• SATreading
isavailable.
• Fireshutdown
modeisnotactive.
If alloftheaboveconditions
aremet,thenumber
ofheat
stages
is c_dculated; otherwise file required number of heat

CERAMIC
BAFFLE

CLIP_

stages will be set to 0.

If the PremierLink controller determines that heat stages are
required, the economizer damper will be moved to minimum
position if occupied and closed if unoccupied.

HEAT EXCHANGER
TUBES

NOTE: One baffle and clip will be in each uppertube
exchanger.

Staging should be as follows:
HEAT STAGES=I
HEAT STAGES=2

ofthe

heat

Fig. 49 -- Removing Heat Exchanger Ceramic
Baffles and Clips

If Heating PID STAGES=2
•
•

(75% capacity) will energize HSI
(100% capacity) will energize HS2

In order to prevent short cycling, the unit is locked into the
Heating mode for at least 10 minutes when HS 1 is deenergizedi
When HSI is energized the induced-_,-°
@

Low Ambient Lockout Switch

Terminal (Unmarked)

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, Jumpers are omitted when unit is equipped with economizer,
4, IFCB must trip amps is equal to or less than 140% FLA,
5, On TRAN1 use BLK lead for 460-v power supply and ORN lead for 575-v power supply.
6, The CLO locks out the compressor to prevent short cycling on compressor overload and safety devices; before replacing CLO check these devices.
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, 620 Ohm, 1 watt, 5% resistor should be removed only when using differential enthalpy or dry bulb.
9, 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.
10, OAT sensor is shipped inside unit and must be relocated in the field for proper operation.
11, 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. 59.

EconoMi$erlV

Troubleshooting--

See Table 30

for EconoMiSer IV logic.
A functional view of the EconoMiSerlV
is shown in
Fig. 60. Typic;d settings, sensor ranges, and jumper positions
are also shown. An EconoMiSerIV
simulator proglam is
available from Carrier to help with EconoMiSerIV tlaining 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-ohln
resistol: and a 5.6 kilo-ohm resistor which are not supplied
with the EconoMiSerlV.

Ensure terminals AQ and AQI are open. The LED for
both DCV and Exhaust should be off. The actuator
should be fully closed.
Connect a 9-v batte q to AQ (positive node) and AQI
(negative node). The LED for both DCV and Exhaust
should turn on. The actuator should drive to between 90
and 95% open.
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
_emain in position.
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. The actuator should
chive fully closed.
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.

IMPORTANT:
tiometers
before Bestarting
sure totroubleshooting.
record the positions

Return EconoMiSerlV
settings and wiring to norlnal
after completing troubleshooting.
DCV MINIMUM AND MAXIMUM POSITION -- To check
the DCV minimum and maximum position:

of all poten-

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.

1. Make sure EconoMiSerlV
preparation
procedure
has
been performed.
2. Connect a 9-v batte q 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 midpoint. The actuator should drive to between 20 and 80%
open.
4. Turn the DCV Maximum Position potentiometer to fully
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 fully CW. The
actuator should drive fully open.
7. Remove the jumper from TR and N. The actuator should
chive fully closed.
8. Return EconoMi$erIV
settings and wiring to normal
after completing troubleshooting.

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. [f connected, remove sensor from terminals So and +.
Connect 1.2 kilo-ohm 4074EJM checkout resistor across
terminals So and +.
8. Put 620-ohm resistor across terminals SR and +.
9.
10.

Set minimum position, DCV set point, and exhaust
potentiometers fully CCW (counterclockwise).
Set DCV maximum
position potentiometer
lially CW
(clockwise).

11. Set enthalpy potentiometer to D.
12. Apply power (24 vac) to termimds TR and TRI.
DIFFERENTIAL
ENTHALPY-To check
differential
enthalpy:
1. Make sure EconoMiSerIV
preparation
procedure
has
been performed.
2. Place 620-ohm resistor across So and +.
3. Pkice 1.2 kilo-ohm resistor across SR and +. The Free
Cool LED should be lit.
4.

Remove 620-ohm resistor
Cool LED should turn off.

across

Return EconoMiSerlV
settings
after completing troubleshooting.

So and +. The Free

and

wiring

Set the enthalpy potentiometer
Cool LED should turn off.

Remove the jumper across T and TI. The actuator should
&ive fully closed.
5. Return EconoMiSerIV
settings and wiring to normal
after completing troubleshooting.
ECONOMISERIV
TROUBLESHOOTING
COMPLETION -- This procedure is used to return the EconoMiSerlV
to operation. No troubleshooting or testing is done by performing the following procedure.

to normal

SINGLE ENTHALPY
-- To check single enth;dpy:
1. Make sure EconoMiSerIV
preparation
procedure
been performed.
2. Set the enthalpy potentiometer to A (fully CCW).
Free Cool LED should be lit.
3.

SUPPLY-AIR INPUT -- 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 resistor and jumper T to TI.
The actuator should drive fully open.

has
The

1. Disconnect

to D (fully CW). The Free

2.
3.

Return EconoMiSerIV
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
been performed.

preparation

procedure

4.
5.
6.

has

power at TR and TRI.

Set enthalpy potentiometer to previous setting.
Set DCV maximum position potentiometer
to previous
setting.
Set minimum position, DCV set point, and exhaust
potentiometel5 to previous settings.
Remove 620-ohm resistor from terminals SR and +.
Remove 1.2 kilo-ohm checkout lesistor from terminals
So and +. [fused, reconnect sensor from tenninals So and

7. Remove jumper fiom 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
PI.

fiom P to PI. Reconnect

device a P and

11. Apply power (24 vac) to termimds TR and TRI.

Table 27 -- Cooling Service Analysis
PROBLEM

CAUSE

Compressor and
Condenser Fan
Will Not Start.

REMEDY

Power failure.
Fuse blown or circuit breaker tripped.
Defective thermostat,
relay.
Insufficient

Compressor
Will Not
Start but Condenser Fan
Runs.

Compressor
Cycles
(other than normally
satisfying thermostat).

Call power company.
Replace fuse or reset circuit breaker.

contactor, transformer,

line voltage.

Determine cause and correct.
Check wiring diagram and rewire correctly.

Thermostat

Lower thermostat setting below room temperature.

setting too high.

Faulty wiring or loose connections in compressor circuit.
Compressor motor burned out, seized, or internal overload open.

Check wiring and repair or replace.
Determine cause. Replace compressor.

Defective overload.

Determine cause and replace.

Compressor

Determine cause for safety trip and reset lockout.

locked out

One leg of 3-phase power dead.

Replace fuse or reset circuit breaker.
Determine cause.

Refrigerant

Defective compressor.

Recover refrigerant, evacuate system, and recharge
to nameplate.
Replace and determine cause.

Insufficient line voltage.
Blocked condenser.

Determine cause and correct.
Determine cause and correct.

Defective overload.

Determine cause and replace.

overcharge or undercharge.

Faulty condenser4an
Operates

Replace thermostat.
motor.

Replace.

Restriction in refrigerant system.

Locate restriction and remove.

Dirty air filter.
Unit undersized for load.

Replace filter.
Decrease load or increase unit size.

Thermostat

Reset thermostat.

set too low.

Low refrigerant charge.

Excessive
Pressure.

Head

Locate leak, repair, and recharge.

Air in system.

Recover refrigerant,

Condenser coil dirty or restricted.

Clean coil or remove restriction.

Dirty air filter.
Dirty condenser

Replace filter.
Clean coil.

Refrigerant

coil.

overcharged.

Excessive
Pressure.

Suction
Low.

Suction

Pressure Too

1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.

Air in system.

Recover refrigerant,

Condenser air restricted or air short-cycling.

Determine cause and correct.

Low refrigerant charge.

Check for leaks, repair, and recharge.

Restriction in liquid tube.

Remove restriction.

High heat load.
Faulty TXV.

Check for source and eliminate.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.

Refrigerant

Recover excess refrigerant.

overcharged.

evacuate system, and recharge.

Dirty air filter.
Low refrigerant charge.

Replace filter.
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.

Temperature too low in conditioned
Field-installed

Increase air quantity. Check filter and replace if
necessary.
area.

Reset thermostat.

filter drier restricted.

Replace.

LEGEND
TXV -- Thermostatic

evacuate system, and recharge.

Recover excess refrigerant.

Faulty TXV.

Head Pressure Too Low.

Replace component.

Incorrect or faulty wiring.

Defective thermostat.

Compressor
continuously.

or control

Expansion Valve

Table 28 -- Heating Service Analysis
PROBLEM
Burners Will Not
Ignite.

CAUSE

REMEDY

Misaligned spark electrodes.

Check flame ignition and sensor electrode positioning.
Adjust as needed.

No gas at main burners.

Check gas line for air; purge as necessary. After purging
gas line of air, allow gas to dissipate for at least 5 minutes before attempting to relight unit.
Check gas valve.

Inadequate

Heating.

Poor Flame
Characteristics.

Water in gas line.

Drain water and install drip leg to trap water.

No power to furnace.
No 24 v power supply to control circuit.

Check power supply, fuses, wiring, and circuit breaker.
Check transformer. Transformers with internal overcurrent protection require a cool-down period before
resetting. Check 24-v circuit breaker; reset if necessary.

Miswired or loose connections.

Check all wiring and wire nut connections.

Burned-out heat anticipator in thermostat.
Broken thermostat wires.

Replace thermostat.

Dirty air filter.

Clean or replace filter as necessary.

Gas input to unit too low.

Check gas pressure at manifold. Clock gas meter for
input. If too low, increase manifold pressure or replace
with correct orifices.

Unit undersized for application.
Restricted airflow.

Replace with proper unit or add additional unit.

Blower speed too low.

Install alternate motor, if applicable, or adjust pulley to
increase fan speed.

Limit switch cycles main burners.

Check rotation of blower, thermostat heat anticipator settings, and temperature rise of unit. Adjust as needed.

Too much outdoor air.

Adjust minimum position.

Incomplete combustion
results in:

Run continuity check. Replace wires if necessary.

Clean filter, replace filter, or remove any restrictions.

(lack of combustion

Check economizer operation.
Check all screws around flue outlets and burner com)artment. Tighten as necessary.

air)

Aldehyde odors, CO, sooting flame, or floating flame.

Cracked heat exchanger.
Overtired unit -- reduce input, change orifices, or adjust
as line or manifold pressure.
Check vent for restriction.

Clean as necessary.

Check orifice to burner alignment.
Burners Will Not Turn
Off.

Unit is locked into Heating mode for a one minute
minimum.

Wait until mandatory one minute time period has
elapsed or power to unit.

LEGEND
GR -- Ground

Table 29 -- MoistureMiSer
PROBLEM
Subcooler Will Not Energize

Dehumidification

CAUSE

REMEDY

No power to subcooler control transformer.
No power from subcooler control transformer
liquid line three-way valve.

Liquid line three-way valve will not operate.
Subcooler

Will Not Deenergize

Low System

Capacity

Subcooler Service Analysis

Liquid Line three-way valve will not close.
Low refrigerant charge or frosted coil.

Check power source. Ensure all wire connections
are tight.
to

1. Fuse open; check fuse. Ensure continuity of wiring.
2. Subceoler 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.

Table 30 -- EconoMi$erlV

Input/Output

Logic

INPUTS
Demand Control
Ventilation (DCV)
Below set
(DCV LED Off)

Above set
(DCV LED On)

OUTPUTS

Enthalpy*
Outdoor

N Terminalt

Compressor
Return

Stage
1

High
(Free Cooling LED Off)

Low

On
On

On
Off

On
On

On
Off

Off

Low
(Free Cooling LED On)

High

On
On

On
Off

Off

On
On

High
(Free Cooling LED Off)

Low

Low
(Free Cooling LED On)

High

Stage
2

Occupied

Unoccupied
Dam )er

Minimum position

Closed

Off
Off

Modulating** (between min.
position and full-open)

Modulating** (between
closed and full-open)

Off

Minimum position

Closed

On
Off

On
On

On
Off

Modulating1-1- (between min.
position and DCV maximum)

Off

Modulatingtl(between
closed and DCV
maximum)

On
On

On
Off

Off
Off

Modulating***

Modulatingtl-t

Off

*For single enthalpy control, the module compares outdoor
enthalpy to the ABCD set point.
tPower at N terminal determines Occupied/Unoccupied
setting:
24 vac (Occupied), no power (Unoccupied).
**Modulation is based on the supply air sensor signal.
1-1-Modulation is based on the DCV signal.
***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).
1-tl-Modulation
is based on the greater of DCV and supply-air
sensor signals, between closed and either maximum position
(DCV) or fully open (supply-air signal).

- INOO(O
(HEATrNG)
FAN DELAY

i _

2 R._S

_TES
_O_D

_I--

UMrr

_
WITH
GAS VALVE

CYCLED 4 _S

ON SINGLE

HEA'nNG

MOTOR FAULT
Owo slgnalfrom _'w_,
H_I Effect
,_
toteo se(:on¢_)

'Wl' IGC
FROM
BASE CONTROL
ON
- 1 MINUTE
LOCK-ON BOARD

ENERGIZES

RELAY ON IGC B E_

'W'

9AqTCH OF
7 _SROt.LOUT
- OPENIF_

FALI.T

8 FLASI-IES - _

9 FLASHES
LOCKOUT
- SOFTWARE

(:_

I_ _

Ii-

IGC S_
LOGIC V_ILL SHUT
OFF GAS VALVE AND SPARK

EXCHANGER
20 _K;OND
PDRGE OF HEAT

Y"
HAS BEEN REDUCED DUE TO UM_ SWffCH
AFllSR 45
SECONDS
IF THE TIMING
TRIPS)
IGC
WILL _ (OR LE_ BLOhlBR
RELAY

SU_
5 SECONDS (OR
ANOI]-IE_ 5 SL=CONDS) FROM
INDOOR FAN ON TIME I:t_AY

Yes

(5IGNITION
RASheS LOCKOLrr
OF LED)

I
j

LEGEND
IGC -- Integrated Gas Unit Controller
NOTE: Thermostat Fan Switch in the "AUTO"
position.

I
I
I

_ING

SA_

I,
_

STOPS, SAP-ETY LOGIC SHUI_

(DBJ_Y EXI_

Fig. 59 -- IGC Control

OFF GAS VALVE

BY 5 _
FOR _
UMIT _/£qlCH TRIP MAXIMUM DELAY: 3 MINLrFEs)

(Heating and Cooling)

t
I

Fig. 60 -- EconoMiSerlV Functional View

INDEX
Air quality limits 40
Altitude compensation
12
Burner section
12
Burner spark gap 47
Carrier Comtbrt Networked) 19
Charging chart, refrigerant
45
Clearance
6-8
CO2 sensor
Configuration
30
Settings
29, 30
Combustion blower wheel 43
Compressor
Lockout
25, 46
Lubrication
43
Mounting
33
Rotation
33
Concentric duct
11
Condensate drain
Cleaning
43
Location
11, 12
Condenser coil 9
Cleaning
43
Condenser fan 9
Adjustment
45
Control circuit 46
Wiring
13
Convenience outlet 14
Crankcase heater 33, 46
Demand control ventilation 28
Dehunfidification
30
Dimensions
3, 4, 6-8'
Ductwork
11
EconoMiSerlV
24-.¢0
Control mode 27
Controller wiring 26
Damper movement
28
Demand ventilation control 28
Troubleshooting
51, .52,.54
Usage
27
Wiring 26
EconoMiSer2
24-26
Electrical connections
13
Electrical data
15
Enthalpy changeover set points 29
Error codes 4Z .5.5
Evaporator coil O
Cleaning
43
Ewtporator fun motor
Efficiency 40
Lubrication
44
Motor data 40
Pertbrmance
34-39
Pulley adjustment 44
Pulley setting 9, 40
Speed O
Filter
Cleaning
43
Size 10
Filter drier 4_
Flue collector box 43
Flue gas passageways
43
Flue hood
11
Freeze protection thermostat
10,46
Gas connection
10
Gas input 10
Gas piping 13, 33
Gas pressure
1, 10
Heat anticipator settings 10, 13
High-pressure switch
10,46
Hinged access doors 47
Horizontal adapter roof curb 2
Humidistat
31
Indoor air quality sensor 19
Integrated gas controller
Error codes 55
Liquid propane
10, 12
Lx_w-pressure switch
10, 46
Main burners
43, 46

Manual outdoor air damper
16
MoistureMiSer dehumidification
package 31, .¢2,45, 53
MotorMaster® I control
17
Motonnaster V control
18
Mounting
Compressor
.¢3
Unit 2
Natural gas 10
Non-fused disconnect
14
Operating limits 18
Operating sequence 41-43
Cooling 41-43
EconoMiSerlV
41
EconoMi$er2 with
PmmierLink control 41-43
Heating 41-4.€
Outdoor air hood 16
Outdoor air temperature sensor 19,25
Outdoor air inlet screens
Cleaning
43
Dimensions
10
Physical data O,10
Power supply
13
Wiring 13
PremierLink controls
19-22
Pressure, drop
EconoMiSerlV
40
MoistureMi$er
40
Pressure switches
High pressure 10
Low pressure
10
Refrigerant
ChaNe 45
Type O
Refrigerant selwice ports .¢3
Replacement parts 46
Return air filter
10,33
Returu air temperature sensor 27
Rigging unit 2, 5
Roof curb
Assembly
2
Dimensions
3, 4
Leveling tolerances 2-4
Safety considerations
1
Sew,ice 43-50
Serqce ports 33
Start-rip 33-43
Start-rip checklist
CL-1
Supply-air temperature sensor
19, 25
Thermostat
14,28
Troubleshooting
51-.%
Weight
Corner 6-8
EconoMiSerlV
6-9
Maximum
5
MoistnreMi$er
9
Unit 6-9
Wind baffle 11, 1Z 18
Wiring
4 to 20 mA control 24
EconoMi$erlV
26
EconoMi$er2
26
Humidistat 31
Power connections
13
PremierLink
20
Thermostat
14
Unit 48, 49

SERVICE

Packaged
discussed

Service Training programs _ue an excellent
in this manual, including:

TRAINING

way to increase your knowledge

• Unit Familitu'ization

• Maintenance

• Installation

• Operating

Overview

A large selection of product, theory, and skills programs am available,
and materials. All include video and/or slides, plus companion book.

of the equipment

Sequence
using popular video-based

formats

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 callbacks. Course
descriptions and schedules ale in our catalog.

CALL FOR FREE CATALOG 1-800-644-5544
[

] Packaged Service Training

[

] Classroom Service Training

Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications
Catalog No. 04-53480016-01

Printed in U.S.A.

or designs without notice and without incurring obligations.

Form 48TM-4SI

Pg 58

3-06

Replaces:

48TM-3SI

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
[] 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
LU

[] CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SETSCREW
IS TIGHT

2:
d3

[] VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED

I--

[] VERIFY THAT SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION

[] VERIFY THAT CRANKCASE HEATER HAS BEEN ENERGIZED FOR 24 HOURS

o,
<
I-

START-UP

ELECTRICAL
SUPPLY VOLTAGE
COMPRESSOR

AMPS -- COMPRESSOR NO. 1
COMPRESSOR NO. 2

SUPPLY FAN AMPS

LI-L2

L2-L3

L3-LI

EXHAUST FAN AMPS

TEMPERATURES
OUTDOOR-AIR TEMPERATURE

F DB (Dry-Bulb)

RETURN-AIR TEMPERATURE

F DB

COOLING SUPPLY AIR

GAS HEAT SUPPLY AIR

F WB (Wet-Bulb)

2:
rm
LU

I-d3

PRESSURES

GAS INLET PRESSURE
GAS MANIFOLf) PRESSURE STAGE NO. 1
REFRIGERANT SUCTION
CIRCUIT NO. 1
REFRIGERANT DISCHARGE CIRCUIT NO. 1
[]

VERIFY

REFRIGERANT

CHARGE

USING

IN. WG
IN. WG
PSIG
PSIG
CHARGING

CHART

o,
STAGE NO. 2
CIRCUIT NO. 2
CIRCUIT NO. 2

<
I-

IN. WG
PSIG
PSIG

ON PAGE 45.

GENERAL
[] ECONOMIZERMINIMUM VENT AND CHANGEOVERSETTINGSTO JOB REQUIREMENTS

Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications
Book

1 14

Tab

1a 16a

Catalog No. 04-53480016-01

Printed in U.S,A,

or designs without notice and without incurring obligations.

Form 48TM-4SI

Pg CL-1

3-06

Replaces:

48TM-3SI

Source Exif Data:

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File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 60
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 3, 2, 1, 4
Create Date                     : Fri Apr 20 14:39:55 2007
Author                          : 
Title                           : 
Subject                         :

EXIF Metadata provided by EXIF.tools

CARRIER Package Units(both Units Combined) Manual L0606342

48TM016-028 L0606342

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