T812 & TS812 Installation Instructions

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
RW
1
TH
TR
TR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
M2043
7
LIMIT FAN
T812A
THERMOSTAT
GAS VALVE
COMBINATION FAN
AND LIMIT CONTROL
FAN
MOTOR
TRANSFORMER
M20438
A
TH1 TH2 PP PP
LIMIT
CONTROL
PILOT CONTROL
(IF USED)
MILLIVOLT
GENERATOR
RW
TS812
THERMOSTAT
1
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
M2043
9
TO 12 Vdc
POWER SUPPLY
GAS VALVE
WR
T812B
THERMOSTAT
HEAT
L2
L1
1
M2044
0
FAN
COOL
1
POWER SUPPLY. PROVIDE DISCONNECT MEAN
S
AND OVERLOAD PROTECTION AS REQUIRED.
R
W Y G
T812C
THERMOSTAT
COOL
L2
L1
1
M2044
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEAN
S
AND OVERLOAD PROTECTION AS REQUIRED.
RY
T812D
THERMOSTAT