Lennox International Inc. 61H42 Heat Pump User Manual


 
TOP VIEW FRONT VIEW
REPLACEMENT
BOARD
_J
f
REMOVE
EXISTING BOARD
Use existing hole to
install replacement board
I
®1
DEFROST TIME
INTERVAL JUMPER
9O
6O
0 _o
RST
HLD
24V
OUT
COM
_ INTERNAL
JUMPER
Drill new hole into
control box panel
FIGURE 1
_] HIGH
PRESSURE
SWITCH
LOSS OF
, CHARGE
._ SWITCH
DEFROST
BOARD
COMPRESSOR
CONTACTOR
RST 0
HLD
24V * _)-
OUT (_
tOM9
TYPICAL WIRING
DEFROST THERMOSTAT
OUTDOOR FAN AND
DEFROST RELAY
EXISTING TRANSFORMER
COMMON YELLOW WIRE
EXISTING TRANSFORMER
24V POWER BLUE WIRE
DEFROST HIGH
PRESSURE
SWITCH
*NO TE-- No external/umper ts requtred for
24VAC terminals. The 2,4V terminals are
jumpered lnternal/}z Either termina/ may be
connected to defrost thermostat•
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