Product Data

3
Accessories
65345 4-3/4” X 4-3/4” adapter plate.
65406 Remote or changeover sensor, 60" leads 10k Ω @ 77°F (25°C).
65409 Fahrenheit set point dial 50 to 90°F
65410 Celsius set point dial, 10 to 32°C.
65170 Warmer/cooler set point dial.
65860 Set point dial stop kit. Limits dial travel in 2F degree increments.
680-243-5 Auto seasonal changeover switch.
680-243-6 Auto seasonal changeover switch.
Wiring
4
3
2
1
1
2
3
TB1
TB3
L1 (HOT)
COOLING
VALVE
L2 OR NEUTRAL
TA155-018
(FOR HEATING ONLY, WIRE TO TB3, #1)
4
3
2
1
1
2
3
1
2
3
4
5
TB1
TB2
TB3
HEATING
/
COOLING
VALVE
L2 OR NEUTRAL
TA155-017
680-243
CHANGEOVER
THERMOSTAT
PIPE MOUNTED
WHT
BLK
BLU
LOW
MED
L1 (HOT)
FAN
HI
Figure-1 Typical 2-Pipe Cooling or Heating Only.
No Fan Connections.
Figure-2 Typical 2-Pipe Heating/Cooling/Continuous Fan
with System Switch off, Fan is Off.
4
3
2
1
1
2
3
1
2
3
4
5
TB1
TB2
TB3
COOLING
VALVE
HEATING
VALVE
L2 OR NEUTRAL
TA155-010
LOW
MED
L1 (HOT)
FAN
HI
FAN
RELAY
FAN
RELAY
4
3
2
1
1
2
3
TB1
TB3
L1 (HOT)
COOLING
VALVE
HEATING
VALVE
L2 OR NEUTRAL
TA155-015
Figure-3 Typical 4-Pipe Heating/Cooling Fan cycles with
Demand for Heating or Cooling. With System Switch Off,
Fan is Off.
Figure-4 Typical 4-Pipe Heating/Cooling.
No Fan Connections.
4
3
2
1
1
2
3
1
2
3
4
5
TB1
TB2
TB3
HEATING/
COOLING
VALVE
L2 OR NEUTRAL
TA155-017
680-243
CHANGEOVER
THERMOSTAT
PIPE MOUNTED
WHT
BLK
BLU
LOW
MED
L1 (HOT)
FAN
HI
FAN
RELAY
4
3
2
1
1
2
3
1
2
3
4
5
TB1
TB2
TB3
HEATING
/
COOLING
VALVE
L2 OR NEUTRAL
TA155-017
680-243
CHANGEOVER
THERMOSTAT
PIPE MOUNTED
WHT
BLK
BLU
LOW
MED
L1 (HOT)
FAN
HI
Figure-5 Typical 2-Pipe Heating/Cooling Fan Runs
with System Switch On or Off.
Figure-6 Typical 2-Pipe Heating/Cooling Fan Cycles
with Demand for Heating or Cooling.
With System Switch Off, Fan is Off.