Carrier 50TFQ008-012 Dimensions and installation guide

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

2
Fig. 1 — Roof Curb Details

3
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

4
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

5
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

6
Fig. 6 — Base Unit Dimensions

7
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

8
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
kW
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
007
009
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
006
008
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
012
015
017
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
014
016
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

9
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***

10
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

11
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
3
=1371
3
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local
electric utility company immediately.
7
457

12
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
TO
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
G
W/W1
Y/Y2
O/W2
R
C
S1
S2
THERMOSTAT DIPSWITCH SETTINGS
R
G
Y1
Y2
W1
W2
C
IPD/X
ON
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
W2
C
Y1
G
R
Y2
W1
C
G
R
Y2
W1
X
W2
C
Y1
G
R
Y2
W1
X
24 VAC
RMTOCC
CMPSAFE
FSD
NOT USED
C
X
SFS
THERMOSTAT CONTROL
CONNECTION
BOARD
BOARD
CONNECTION
CONTROL
Fig. 9 — Typical Field Control Wiring Raceway
Fig. 8B — Low Voltage Connections
(Units with PremierLink™ Controls)

13
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

14
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
HOOD
SCREEN
LOCATION
(SCREEN
NOT
SHOWN)
Fig. 13 — Optional Manual Outdoor-Air
Damper with Hood Attached
Fig. 14 — Outdoor Air Damper Position Setting

15
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

16
TB-1
R
Y1
Y2
W1
W2
G
C
X
1
2
3
4
5
6
7
8
TB-3
1
2
3
4
5
6
7
8
TB-2
1
2
3
4
5
6
7
8
J6
ANAL OG
J5
0-20mAIN
J4
DISCRETE
J1
PWR
J2
COMMS
J9
0-20 mA
J8
Relays
HK50AA039
BRN
BRN WHT
WHT
RED
PNK
PNK
ORNORN
ORN
ORN
GRA
GRA
ORN
RED
J7
PP/MP
WHT
BLK
RED
RED
PNK
WHT
BLK
PNK
WHT
BLU
ORN
YEL
GRN
BRN
BRN
RED
RED
BRN
BRN
BLK
BLK
BRN
BRN
BLU
BLU
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
PNK
PNK
VIO
VIO
GRA
ORN
PNK
PNK
GRA
GRA
GRA
SAT
BRN
ORN
BLK
RED
Space Temp./ Set
Point Adjustment
Indoor Air
Quality Sensor
OAT
PNK
VIO
YEL
YEL
BLU
BLU
Economi$er2
4 - 20mA
BLK
RED
WHT
PremierLink
GRN
YEL
BLU
BLU
BLU
Outdoor Air
Quality Sensor
Power Exhaust/Energy Recycler
CCN
Comm.
RMTOCC
SFS
CMPSAFE
FSD
RTU Terminal
Board
TR TR1
SR
23
+
+
S
RED
BRN
BLK
RED
GRAY
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)

17
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
D
TR TR1
SO
SR
2
3
1
+
+
BRN
RED
GRAY/ORN
GRAY/RED
WIRE HARNESS
IN UNIT
BLK
RED
S
+
(RETURN AIR
ENTHALPY
SENSOR)
S
+
(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

18
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

19
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$er2 wiring is shown
in Fig. 27.
Barometric flow capacity is shown in Fig. 28. Outdoor air
leakage is shown in Fig. 29. Return air pressure drop is shown
in Fig. 30.
B
TOP
PANEL
INDOOR COIL
ACCESS PANEL
24 9/16”
SCREW
HOOD DIVIDER
LEFT
HOOD
SIDE
40 3/8”
Fig. 24 — Outdoor-Air Hood Construction
22 1/4”
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER FILTER
HOOD
FILTER
CLIP
OUTSIDE
AIR
Fig. 25 — Filter Installation
FOR OCCUPANCY CONTROL
REPLACE JUMPER WITH
FIELD-SUPPLIED TIME CLOCK
LEGEND
DCV— Demand Controlled Ventilation
IAQ — Indoor Air Quality
LA — Low Ambient Lockout Device
OAT — Outdoor-Air Temperature
POT— Potentiometer
RAT — Return-Air Temperature
Potentiometer Defaults Settings:
Power Exhaust Middle
Minimum Pos. Fully Closed
DCVMax. Middle
DCVSet Middle
Enthalpy C Setting
NOTES:
1. 620 ohm, 1 watt 5%resistor should be removed only when using differential
enthalpy or dry bulb.
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3. For field-installed remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT. to the minimum
position.
Fig. 26 — EconoMi$er IV Wiring

20
4
3
5
2
8
6
7
1
10
11
9
12
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
2
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
0
500
1000
1500
2000
2500
0.05 0.15 0.25
STATIC PRESSURE (in. wg)
FLOW IN CUBIC FEET PER MINUTE (cfm)
0
5
10
15
20
25
30
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)
0
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)