L2 LI
[L
CIRCUIT
,,I
HEAT ELEMENT #I
CIRCUIT BREAKERS OR
TERMINAL BLOCK
GROUND
K32
HEAT RELAY 'I
_TBI
K3 INDOOR
BLOWER RELAY
fuse
c_ TRANSFORMER
FUSE
TERMINAL /_
BLOCK _=_
I I
I I
J
HEAT PUMP APPLICATION
WITH ELECTRIC HEAT
I
$23
OUTDOOR
THERMOSTAT
(IF USED)
CLASS 2 VOLTAGE FIELD INSTALLED
NEC/CEC
NOTE-ALL REMAINING WIRES FACTORY INSTALLED
//_ THERMOSTAT HEAT ANTICIPATION SETTING 0.4
AMP ELECTRIC HEAT
//_ FACTORY INSTALLED JUMPERS
SI
THERMOSTAT Z_
EM _I2E2ATRELAY_ ,Z_(_
I
]
5
z
o
o
DD
o
oo
i,,I,
rqE]D
[ I
I
J I
I
/_ WHEN OUTDOOR THERMOSTAT IS USED, CONNECT LEADS TO TERMINALS "R" AND "W2" (M If
AND REMOVE JUMPER BETWEEN TERMINALS "R' AND "W2." U3
_2
//_ EMERGENCY HEAT RELAY (USED ONLY IF OUTDOOR T'STAT IS USED) FIELD PROVIDED AND _I:_-
INSTALLED NEW INDOOR UNIT. 24VAC 5VA MAX NEC/CEC CLASS 2 (J¢r
/_ USING SERVICE LIGHT OPTION ($54)WITH SOME ELECTRONIC THERMOSTATS MAY RE- I_ _--
QUIRE MOVING $54 COMMON WIRE TO Y1 IN HEAT PUMP UNIT. "5::1h
A
COMMON USED ONLY ON SOME THERMOSTATS. I--_-
//_ Y2 USED ONLY WHEN TWO SPEED COMPRESSOR IS USED (HP21). --
HIC
//_ AMBIENT COMPENSATING THERMISTOR CONNECTION USED ONLY ON SOME THERMOSTATS.
Figure 8. Heat Pump Applications with Electric Heat
Page 10
505340M 07/07
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