69-0444—10
5
T834B; T834C; T834J HEATING-COOLING THERMOSTATS
H1
TEMP. FALL
C1
L1
(HOT)
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
HEAT RELAY
COMPRESSOR
CONTACTOR
NO FAN
SWITCH
COOL
OFF
HEAT
COOL
OFF
HEAT
SYSTEM
SWITCH
C1
ANTICIPATOR
H1
ANTICIPATOR
M498
W
Y
R
H1
TEMP. FALL
C1
L1
(HOT)
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
ZONE VALVE
COMPRESSOR RELAY
FAN RELAY
COOL
OFF
HEAT
COOL
OFF
HEAT
SYSTEM
SWITCH
C1
ANTICIPATOR
H1
ANTICIPATOR
M6108A
W
Y
G
R
NO FAN
SWITCH
Fig. 10. Internal schematic and typical hookup for T834B in standard heating-cooling system
with no fan switching.
TEMP. FALL
C1
L1
(HOT)
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
COOL RELAY
"P" RELAY
FAN SWITCH
ON
AUTO
COOL
OFF
COOL
OFF
SYSTEM
SWITCH
C1
ANTICIPATOR
M6109A
Y
P
R
FAN RELAY
G
O
"O" RELAY
Fig. 11. Internal schematic and typical hookup for T834B in heating-cooling system with zone valve.
Fig. 12. Internal schematic and typical hookup for T834J cooling only system.
