Installation - Hunter 44760 Owner's Manual

41652_model44760_web.pmd
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INSTALLATION

TERMINAL
LABELS
R 24V AC supply
Y1 Compressor stage 1
W2 Auxiliary heating
E Emergency heating
O Reversing valve
(cooling mode)
B Reversing valve
(heating mode)
G Fan
L System monitor
C 24V AC common
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HUNTER
TERMINALS CARRIER
R R
Y1 Y or Y1
W2 W2
E E
O O
B
G G
L L or F
C C
NOTE: If your heat pump thermostat does not have an E wire, use the provided jumper wire to connect the E terminal to
the W2 terminal, as shown in three examples above. Refer to the Wiring Diagram on page 52.
TABLE A – TERMINAL DESCRIPTIONS
FUNCTION
(HEAT PUMP)
Hot wire of 24VAC transformer. Powers the thermostat & system.
Activates the 1st stage compressor. (Heat or Cool for Heat Pumps)
Activates the 2nd stage (auxiliary) heating when required.
Activates Emergency heating ONLY when the System Switch is in Emergency (em) Mode.
Activates reversing valve in COOL mode. ALWAYS ON in COOL MODE.
Activates reversing valve in HEAT mode. ALWAYS ON in HEAT MODE.
Activates the system Fan. (Can be Auto, On, or Program controlled)
Activates System Check LED on the front of thermostat.
(Controlled by the system, not the thermostat.)
Common wire of 24V AC transformer. REQUIRED for thermostat operation.
HEAT PUMP CROSS-REFERENCE CHART
EXAMPLES OF DIFFERENT SYSTEM TERMINALS
COLEMAN COMFORTMAKER
R R
Y Y
W2 W1
E jumper
to W2
O
B
G G
L L or X
X C, X, X1 C, C1, X1
Note: W2 wires
no connection
COMMENTS
TABLE B
BRYANT, RHEEM- TRANE,
PAYNE RUUD WEATHERTRON
R R R
Y Y Y
W2 W2 W
E E X2
O O
B
G G G
L L
X B
Note: T wire
no connection
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13
YORK LENNOX (1) LENNOX (2)
R R V-VR
Y Y M
W W1 Y
jumper E E
to W2
O O R
G G F
X L
B C X