Honeywell Chronotherm III T8602A Installation Instructions Manual page 4

T8602A,B,C,D AND TS8602A,C Chronotherm
MV
MV/PV
VR8345
DUAL VALVE COMBINATION
GAS CONTROL
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2
ALTERNATE LIMIT CONTROLLER LOCATION.
3
MAXIMUM CABLE LENGTH 3 FT (0.9M ).
4
CONTROLS IN 24V CIRCUIT MUST NOT BE
GROUND LEG TO TRANSFORMER.
5
LEAVE VENT DAMPER PLUG CONNECTED.
6
REMOVE JUMPER AND CONNECT SENSE
TERMINAL ON TWO ROD APPLICATION ONLY.
Fig. 9. T8602A,B heating-only circuit in a Honeywell Intermittent Pilot Gas Burner Ignition System.
ZONE 1
HEATING ONLY WALLPLATE
2
R8239A1052
C
W Y
L2
1
L1
(HOT)
3
ZONE 1
VALVE OR
DAMPER
MOTOR
Fig. 10. T8602A,B circuit for controlling incompatible or three-wire zone valves or dampers. Heating or cooling
equipment is operated by an end switch on the zone valve or motor, or by a thermostat in a master zone.
69-0309—9
MV
IGNITER
PILOT GAS
SUPPLY
ZONE 2
HEATING ONLY WALLPLATE
R
W
R8222B1067
R G
3
ZONE 2
VALVE OR
DAMPER
MOTOR
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
®
III FUEL SAVER THERMOSTATS
GND
24V
(BURNER)
MV MV/PV PV GND
SENSOR
1
PILOT
BURNER
GROUND
ZONE 3
HEATING ONLY WALLPLATE
R
W
R8222B1067
3
ZONE 3
VALVE OR
DAMPER
MOTOR
4
S8610U
5
VENT
DAMPER
24V TH-W
PLUG
AIR
PROVING W R
SWITCH
COMBUSTION
AIR BLOWER
RELAY
L2
L1
COMBUSTION
(HOT)
AIR BLOWER
MOTOR
L2 L1
1
(HOT)
CONTROLLER
ZONE 4
HEATING ONLY WALLPLATE
R
W
3
ZONE 4
VALVE OR
DAMPER
MOTOR
2 USE ONE R8239 FOR EVERY FOUR ZONES.
3 USE FOR 3-WIRE ZONE VALVE OR DAMPER.
SPARK
SENSE
6
3
THERMOSTAT
2
4
LIMIT
CONTROLLER
M8600
R
W
R8222B1067
M2921