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ELECTRICAL DATA (cont)
ELECTRIC HEATER STATIC PRESSURE DROP (in. wg)
NOTE:
Above electric heaters are
not
UL or CSA listed for use with optional high-static evaporator-fan motor (048, 060 units only).
TYPICAL WIRING SCHEMATICS
ELECTRIC HEATER
UNIT 88EN
UNIT
502A
MIN
CFM
UNIT CFM
600 800 1000 1200 1400 1600 1800 2000 2200
0050CA01
024, 036
1-stage
heat
400 .02 .04 .06 .10 —————
0075CA01
510 .03 .06 .10 .16 —————
0115CA01
620
.04 .08 .13 .19 —————
0075EA01
320
1150EA01
720
0100EA01
048, 060
2-stage
heat
970
———.04 .06 .08 .12 .15 .17
0150EA01
1240
0200EA01
1350
———.08 .11 .14 .18 .22 .26
0300EA01
1220
0300CA01
1220
0100FA01
1130
———.04 .06 .08 .12 .15 .17
0150FA01
1360
0200FA01
1350
———.08 .11 .14 .18 .22 .26
0300FA01
1270
NOTES:
1. Compressor and fan motors are thermally protected 3-phase motors protected against
primary single-phase condition.
2. If any original wires furnished must be replaced, it should be replaced with 90 C or its
equivalent.
3. Numbers indicate the line location of used contacts. A bracket over 2 numbers signi-
fies a single-pole double-throw contact. An underlined number signifies a normally
closed contact.
4. Must use thermostat HH07AT170, 172 or 174 with subbase HN63AZ176, 177 or 178.
5. Separate field power supply required for electric heater accessory.
6. CLO locks out the compressor to prevent short cycling on compressor overloads and
safety devices. Before replacing CLO check devices.
LEGEND
AHA —
Adjustable Heat Anticipator
BKR W/AT —
Brakes with Amp Turns
C —
Contactor Compressor
CB —
Circuit Breaker
CC —
Cooling Compensator
CLO —
Compressor Lockout
CT —
Current Transformer
EQUIP GND —
Equipment Ground
HPS —
High-Pressure Switch
HR —
Heater Relay
IFC —
Indoor (Evaporator) Fan Contactor
IFR —
Indoor (Evaporator) Fan Relay
JB —
Junction Box
L —
Light
LOR —
Lockout Relay
Terminal Block
Field Splice
Splice (Marked)
Factory Splice
Factory Wiring
Accessory or Optional Wiring
Field Control Wiring
Field Power Wiring
To indicate common potential
only, not to represent wiring
LPS —
Low-Pressure Switch
NEC —
National Electrical Code
PL —
Plug Assembly
TB —
Terminal Block
TC —
Thermostat-Cooling
TH —
Thermostat-Heating
TRAN —
Transformer
Marked Wire
Denotes connection point between
subbase and thermostat
Terminal (Marked)
Terminal (Unmarked)
502A036,048,060, 208/230-3-60, 460-3-60; and 502A036, 208/230-1-60