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
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