Filter
Top Products
T8624D CHRONOTHERM
®
IV DELUXE PROGRAMMABLE MULTISTAGE THERMOSTATS
3 69-1412—1
Fig. 3. Typical hookup of T8624D
in a heat pump system.
Fig. 4. Correct wiring technique.
Mounting Thermostat
1. Engage tabs at the top of the thermostat and wall-
plate. See Fig. 5.
2. Press lower edge of case to close and latch.
NOTE: To remove the thermostat from the wall, first pull
out at the bottom of the thermostat; remove top
last.
Fig. 5. Mounting thermostat on wallplate.
W2
L1
(HOT)
L2
M11309
FAN
RELAY
Y1 G C
THERMOSTAT
RC
HEAT
RELAY
1
RW1
L1
(HOT)
L2
COMPRESSOR
CONTACTOR 1
Y2
COMPRESSOR
CONTACTOR 2
HEATING
TRANSFORMER
COOLING
TRANSFORMER
HEAT
RELAY
2
OT
OTB
HEAT
DAMPER
OUTDOOR
SENSOR
COOL
DAMPER
O
2
2
3
3
3
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
JUMPER RC TERMINAL TO R TERMINAL WHEN INSTALLED ON A
ONE TRANSFORMER SYSTEM.
CAN BE USED FOR CHANGEOVER VALVE ON HEAT
PUMP SYSTEMS.
1
1
M4826
FOR WRAPAROUND
INSERTION STRIP
7/16 IN. (11 MM).
FOR STRAIGHT INSERTION
STRIP 5/16 IN. (8 MM).
M14628
PRESS LOWER
EDGE OF CASE
TO LATCH.
ENGAGE TABS
AT TOP OF
THERMOSTAT
AND WALLPLATE.
A.
B.