T812, TS812 THERMOSTATS
3
69-1606ESF-3
Fig. 4. T812A in typical gas heating system.
Fig. 5. Typical hookup to TS812A in millivolt system.
Fig. 6. T812B in 12 Vdc application.
Fig. 7. T812C in heating and cooling system.
Fig. 8. T812D in cooling only application.
TH
L1
(HOT)
L2
R
W
1
TH
TR
TR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
M20437
LIMIT
FAN
T812A
THERMOSTAT
GAS VALVE
COMBINATION FAN
AND LIMIT CONTROL
FAN
MOTOR
TRANSFORMER
M20438A
TH1
TH2
PP
PP
LIMIT
CONTROL
PILOT CONTROL
(IF USED)
MILLIVOLT
GENERATOR
R
W
TS812
THERMOSTAT
1
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
M20439
TO 12 Vdc
POWER SUPPLY
GAS VALVE
W
R
T812B
THERMOSTAT
HEAT
L2
L1
1
M20440
FAN
COOL
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
R W Y G
T812C
THERMOSTAT
COOL
L2
L1
1
M20441
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
R
Y
T812D
THERMOSTAT