Carrier CRHEATER136A00, CRHEATER137A00, CRHEATER138A00, CRHEATER139A00, CRHEATER141A00 Installation Instructions Manual
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Cancels: IIK 542F-150-4 IIK 542J-150-13
1/15/99
Installation Instructions
Part No. CRHEATER136A00 through CRHEATER143A00
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment
can be hazardousdue to system pressure and electrical components. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions 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 precautions in the literature, tags and labels attached
to the unit, and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
GENERAL
This installation instructioncovers accessory electric heater
package numbers CRHEATER136A00,CRHEATER137A00,
CRHEATER138A00, CRHEATER139A00, CRHEATER140A00, CRHEATER141A00, CRHEATER142A00, and
CRHEATER143A00. See Table 1 for kit contents. See
Tables 2-4 for unit electrical data and kit usage.
NOTE: All units with electric heat require a field-supplied
90-degree elbow. The elbow must be installed in the supply
ductwork below the unit discharge connection.
NOTE: Accessory heater package numbers
CRHEATER142A00 and CRHEATER143A00 require an
accessory electric heat box. Contact your distributor for more
details.
Table 1 — Package Contents
QUANTITY ITEM
1 Heater Module
1 Heater Track
2
7
⁄8-in. Bushing
2 2-in. Bushing
7 No. 10 Screw
6 Plate Washer
6 Lock Nut
3
3
⁄8-in. Ring Terminal*
2 Spacer
*Ring terminals are included in package numbers CRHEATER137A00 and
CRHEATER138A00 only and are only used on heat pump units.
INSTALLATION
NOTE: A minimum ductwork clearance of 1 in. is required for the first 24 in. of ductwork on 15 to 25 ton units
with electric heat.
1. Turn off power to the unit.
2. Remove control box access panel and electric heater access panel. See Fig. 1.
3. Remove cover plates from both ends of electric heater
compartment and save screws.
4. Install heater track from accessory package into heater
compartment to facilitate installation of heater assembly.See Fig. 2. Locate track in compartment at side nearest indoor blower section. Secure track to basepans with
field-supplied screws.
5. Install factory-supplied spacers at both sides of electric
heater compartment. See Fig. 2 and 3.
6. Remove 2 knockouts (one
7
⁄8in. and one 2 in.) from the
partition between electric heater compartment and control box section. Insert bushings provided into the holes.
See Fig. 2.
7. Install electric heater assembly (Fig. 4) into heater
compartment.
8. Feed electric heater control wires through
7
⁄8-in. bushing and feed power wires through 2-in. bushing in partition and into the electric heat control box section.
9. Match the holes at the top of the heater assembly with
the baffle at the end of the unit opposite the control section. See Fig. 5.
10. Reinstall cover plate over heater control section. To do
so, line up cover plate, heater assembly, and baffle holes.
Fasten heater assembly to unit with two no. 10 screws
provided in accessory kit. Fasten bottom of cover plate
to basepan with two no. 10 screws provided.
11. Fasten electric heat control box to baffle using remaining no. 10 screws provided in accessory kit. See Fig. 5.
Large Packaged Rooftop Units
121⁄2to 25 Tons
Accessory Electric Heater Packages
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1144
Tab 1b5a5a6b
PC 111 Catalog No. 565-058 Printed in U.S.A. Form 50H,T-1SI Pg 1 1-99 Replaces: 50-5SI
ELECTRIC HEATER
ACCESS PANEL
UNIT CONTROL BOX
ACCESS PANEL
NOTE: Typical unit shown with electric heater access panel removed.
Fig.1—Typical Unit Physical Details (13 to 18 Ton Unit Shown)
*Kit numbers CRHEATER142A00 and CRHEATER143A00 only.
Fig. 2 — Component Location — Electric Heat
2
Table 2 — Standard Efficiency Packaged Rooftop Units,
Electrical Data and Electric Heater Package Usage
UNIT 50TJ
and 559F
NOMINAL VOLTAGE
(3 Ph, 60 Hz)
ACCESSORY HEATER
PART NO. CRHEATER
IFM
ACCESSORY
ELECTRIC HEAT
POWER SUPPLY
Hp FLA kW MCA MOCP
15 Tons
208/240
141A00
3.7
72/ 82 26/34 103/116 150/150
142A00 117/135 42/56 155/148 175/150
143A00 156/180 56/75 169/193 175/200
380
137A00
3
32 21.6 55 80
138A00 54 37.2 76 80
480
137A00
3.7
39 32 55 70
138A00 66 55 72 80
139A00 96 80 102 110
18 Tons
208/240
141A00
5
72/ 82 26/34 110/122 110/125
142A00 117/135 42/56 166/155 175/175
143A00 156/180 56/75 176/200 200/225
480
137A00 39 32 59 60
138A00 66 55 76 80
139A00 96 80 106 110
20 Tons
208/240
141A00
7.5
72/ 82 26/34 121/134 150/150
142A00 117/135 42/56 178/166 200/175
143A00 156/180 56/75 187/211 200/225
480
137A00 39 32 65 70
138A00 66 55 82 90
139A00 96 80 112 125
25 Tons
208/240
141A00
10
72/ 82 26/34 137/138 175/175
142A00 117/135 42/56 181/170 200/175
143A00 156/180 56/75 191/215 200/225
380
137A00 32 21.6 80 100
138A00 54 36 93 100
480
137A00 39 32 70 90
138A00 66 55 84 90
139A00 96 80 114 125
LEGEND
FLA — Full Load Amps
IFM — Indoor-Fan Motor
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NOTE: Control circuit is 24 v.
3
Table 3 — High Efficiency Packaged Rooftop Units
Electrical Data and Electric Heater Package Usage
UNIT 50HJ
and 551A
ELECTRIC HEATER RATING
VOLTAGE (3 Ph, 60 Hz)
ACCESSORY HEATER
PACKAGE NO. CRHEATER
IFM
ACCESSORY
ELECTRIC HEAT
POWER SUPPLY
Hp FLA kW MCA MOCP
13 Tons
208/240
140A00
3.7
39/ 45 14/19 88/ 88 100/100
141A00 72/ 82 26/34 103/116 110/125
142A00 117/135 42/56 159/148 175/175
380 137A00 3 32 21.6 52 60
480
136A00
3.7
18 15 39 45
137A00 39 32 55 60
138A00 66 55 72 80
15 Tons
208/240
141A00
5
72/ 82 26/34 111/122 125/125
142A00 117/135 42/56 167/154 175/175
143A00 156/180 56/75 177/199 200/200
480
137A00 39 32 58 60
138A00 66 55 76 80
139A00 96 80 106 110
20 Tons
208/240
141A00
10
72/ 82 26/34 129/138 150/150
142A00 117/135 42/56 185/170 200/175
143A00 156/180 56/75 195/215 225/225
380
137A00 32 21.6 71 90
138A00 54 36 89 90
480
137A00 39 32 66 70
138A00 66 55 83 90
139A00 96 80 113 125
LEGEND
FLA — Full Load Amps
IFM — Indoor-Fan Motor
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NOTE: Control circuit is 24 v.
Table 4 — Packaged Heat Pump Units
Electrical Data and Electric Heater Package Usage
UNIT
50HJQ and
542J
ELECTRIC HEATER
RATING VOLTAGE (3 Ph, 60 Hz)
ACCESSORY HEATER
PACKAGE NO. CRHEATER
IFM
ACCESSORY
ELECTRIC HEAT
POWER
SUPPLY
Hp FLA kW MCA MOCP
12.5 Tons
208/240
140A00
3.7
39/ 45 14/19 114/123 125/150
141A00 72/ 82 26/34 155/168 175/175
142A00 117/135 42/56 211/200 225/225
480
136A00 18 15 54 60
137A00 39 32 81 90
138A00 66 55 98 110
15 Tons
208/240
141A00
5
72/ 82 26/34 174/187 175/200
142A00 117/135 42/56 231/219 250/225
480
137A00 39 32 91 100
138A00 66 55 108 110
LEGEND
FLA — Full Load Amps
IFM — Indoor-Fan Motor
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NOTE: Control circuit is 24 v.
4
UnitsNot RequiringAccessoryElectric HeatBox
(Accessory Kit Numbers CRHEATER136A00,
137A00, 138A00, 139A00, 140A00, 141A00)
1. Remove the 2-in. knockout from the bottom of the unit
control box, and install a 2-in. bushing (provided) in the
hole.
2. On heat pump units using number CRHEATER137A00
or CRHEATER138A00 accessory kits, remove the factorysupplied power wire terminals, and crimp the
3
⁄8-in. ring
terminals (supplied in accessory kit) onto the ends of the
power wires.
3. Route power wires fromthe electric heat control boxthrough
the bushing, and into the unit control box.
4. Attach power wiring to the terminal block (TB) as shown
in Fig. 6.
Units Requiring Accessory Electric Heat Box
(Fig. 7) (Accessory KitsCRHEATER142A00and
CRHEATER143A00)
1. Remove field power supply wiring from terminal block
in base unit control box, and remove the wiring from the
box.
2. Remove the 2-in. knockout from the bottom of the unit
control box, and install a 2-in. bushing (provided) in the
hole.
3. Install accessory electric heat box (Fig. 7) under the unit
control box (Fig. 8). The holes in the accessory electric
heat box align with the knockouts in the partition and the
bottom of the unit control box.
4. Install field power supply wiring in accessory electric heat
box and connect it to TB (see Fig. 8 and label diagram on
the unit).
5. Route 1/0 wire with pigtails from the accessory electric
heat box into base unit control box.
6. Fasten the pigtails to TB1 in the unit control box as shown
in Fig. 8.
7. Install electric heater power wiring from the electric heat
control box to TB in accessory electric heat box as shown
in Fig. 8. Fasten wires with plate washers and lock nuts
provided. When running power wiring through unit corner post, install a field-supplied watertight connector.
All Units
1. Remove knockout in base unit control box below the lowvoltage barrier.
2. Install a
7
⁄8-in. bushing (provided).
3. Feed control wiringfrom electric heater controlbox through
hole and secure to TB2 or TB3 as shown in Fig. 6 and 8.
4. Mark the space on the unit nameplate labelled ‘‘Check
Here’’ with appropriate unit minimum circuit amps and
overcurrent protection device.
5. Set heat anticipator settings according to Table 5.
6. Replace all panels.
7. Turn on power to the unit.
ELECTRIC
HEATER
COMPARTMENT
SPACER
ELECTRIC
HEATER
CONTROL
BOX
CONTROL BOX COMPARTMENT
ELECTRIC HEATER
POWER WIRING
ELECTRIC
HEATER
CONTROL
WIRING
ELECTRIC HEATER ELEMENTS
Fig. 3 — Accessory Electric Heater Installation
HEATER
ELEMENTS
ELECTRIC HEATER
CONTROL BOX
HEATER POWER WIRING
HEATER CONTROL
WIRING
Fig. 4 — Accessory Electric Heater Assembly
5
ELECTRIC HEATER ASSEMBLY
(UNIT END OPPOSITE CONTROL SECTION)
BASEPAN
BAFFLE
ELECTRIC HEATER
CONTROL BOX
SPACER
BAFFLE
Fig. 5 — Electric Heater Installation Details
LEGEND
ASY — Assembly
TB — Terminal Block
Fig. 6 — Accessory Electric Heat — Wiring Connection Diagram,
Package Numbers CRHEATER136A00, 137A00, 138A00, 139A00, 140A00, 141A00
6
DOOR
FIELD
POWER
SUPPLY
WIRING
ELECTRIC HEATER POWER WIRING
TO TB1 (BASE UNIT CONTROL BOX)
LEGEND
TB — Terminal Block
NOTE: This accessory is only required for accessory electric heater
kit part numbers CRHEATER142A00 and CRHEATER143A00.
Fig. 7 — Accessory Electric Heat Box
NOTE: Route heater control wiring outside of accessory electricheat
box. Secure withfield-suppliedwiretiestobaseunitcontrolbox.Control wiring must clear hinged door on electric heat box.
LEGEND
ACY — Accessory
ASMLY — Assembly
EQUIP — Equipment
FU — Fuse
GND — Ground
TB — Terminal Block
Fig. 8 — Electric Heater Wiring Connections Using Accessory Electric Heat Box
(Accessory Electric Heat Kit Numbers CRHEATER142A00 and CRHEATER143A00)
7
Table 5 — Heat Anticipator Settings
UNIT VOLTAGE HEATER kW* STAGE 1 STAGE 2
50TJ/559F
15 to 25 Tons
208/230
26/34 0.40 0.66
42/56
0.66
0.40
56/75 0.66
380
21.6†
0.40
0.40
36** 0.66
37.2†† 0.66
460
32
0.40
0.40
55
0.66
80 0.66
50HJ/551A
13 Tons
208/230
14/19
0.40
—
26/34
0.40
42/56 0.66
380 21.6 0.40 0.40
460
15
0.40
—
32 0.40
55 0.66
50HJ/551A
15 and 20 Tons
208/230
26/34 0.40 0.66
42/56
0.66
0.40
56/75 0.66
380\
21.6
0.40
0.40
36 0.66
460
32
0.40
0.40
55
0.66
80 0.66
50HJQ/542J
12.5 and 15 Tons
208/230
14/19¶
1.0
0.26
26/34 0.52
42/56 0.78
460
15¶
1.0
0.26
32 0.52
55 0.78
*Heater capacity (kW) is based on heater voltage of 208 V, 240 v,
380 v, or 480 v. Heaters are rated at 240 v and 480 v. If distribution
voltage to unit power varies from rated heater voltage, heater kW
will vary accordingly.
†Only available on 50TJ/559F, 15 and 25 ton units.
**Only available on 50TJ/559F, 25 ton units.
††Only available on 50TJ/559F, 15 ton units.
\ Only available on 50HJ/551A, 20 ton units.
¶Only available on 50HJQ/542J, 12.5 ton units.
Copyright 1999 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1144
Tab 1b5a5a6b
PC 111 Catalog No. 565-058 Printed in U.S.A. Form 50H,T-1SI Pg 8 1-99 Replaces: 50-5SI
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