Filter
Top Products
4
1 2 L L
1
B2
C1 C2
T
2
B1
T
FD
FD
1
B2
C1 C2
2
B1
FD
T
T1T2
1
B2
C1 C2
2
B1
C1
B1 B2
C2
T1
T2
1 2
4
56
4
56
4
56
4
56
4
56
1
2
3
452
6
1
2
3
452
6
1
2
3
452
61
2
3
452
61
2
3
452
6
DIAGRAM FOR SYSTEMS WHERE INTERNAL TRANSFORMER OF RELAY-HOT WATER CONTROL
SUPPLIES POWER FOR ZONE VALVES
1
V2
C1 C2
T1
2
V1
T2
T3
4
56
4
56
4
56
4
56
4
56
1
2
3
452
6
1
2
3
452
6
1
2
3
452
61
2
3
452
61
2
3
452
6
1
V2
C1 C2
T1
2
V1
T2
Z
B
V3
W
CIRCULATOR
MOTOR
3
5
1
}
TO ZONE
VALVES
TO 24 VAC
GAS VALVE
Alternate Connections
For Type 8F42A
N
LINE
HOT
DIAGRAM FOR SYSTEMS WHERE EXTERNAL TRANSFORMER REQUIRED FOR POWERING ZONE
Fig. 10
OPEN
1
V2
C1 C2
T1
2
V1
T2
Z
3
5
1
}
TO ZONE
VALVES
TO 24 VAC
GAS VALVE
Alternate Connections
For Type 8F43A
TYPE 8F43A
CIRCULATOR
MOTOR
TYPE 8F42A
TO ZONE
VALVES
2
3
{
CIRCULATOR
MOTOR
TO LOW VOLTAGE
GAS VALVE
TYPE 842A-16
HOT
LINE
N
ADDITIONAL
ZONES
Fig. 8 Diagram for Gas-Fired
System using 842A-16
N
LINE
HOT
WIRING – Continued
power is resumed, valve will automatically return to command of
room thermostat.
Use manual operator only in case of power failure, or for testing
system prior to wiring. If power fails, valve may be in either
“Open” or “Closed” position.
If in “Open” position, valve will remain open until power is
resumed.
If in “Closed” position, valve may be opened by turning dial
clockwise with your thumb until word “Open” appears. When
MANUAL OPERATION
2
3
{
TO ZONE
VALVES
TYPE 8B42A
OR 8B43A
N
LINE
HOT
CIRCULATOR
MOTOR
BURNER
MOTOR
IGN.
TRANS.
Alternate Connections
For Type 8B42A or 8B43A
ADDITIONAL
ZONES
TRANSFORMER
TYPE 842A OR
843A
CIRCULATOR
MOTOR
BURNER
CONTROL
HOT
LINE
N
THERM
1
6
3
4
5
2
TYPE 829A RELAY
Alternate Connections
For Type 829A Relay
TO GAS VALVE AND
TRANSFORMER OR
OIL BURNER
CONTROL
CIRCULATOR
MOTOR
HOT
LINE
N
TYPE 6C92 OR 6C93
OIL BURNER
HOT WATER CONTROL
TYPE 956
FLAME DETECTOR
HOT
LINE
N
BURNER
MOTOR
CIRCULATOR
MOTOR
2
3
{
TO ZONE
VALVES
IGN.
TRANS.
Alternate Connections
For Type 6C92 or 6C93
IGN.
TRANS.
HOT
LINE
N
TYPE 692 OR 693
OIL BURNER
HOT WATER CONTROL
TYPE 956
FLAME DETECTOR
BURNER
MOTOR
CIRCULATOR
MOTOR
2
3
{
TO ZONE
VALVES
Alternate Connections
For Type 692 or 693
HOT
LINE
N
CIRCULATOR
MOTOR
TO GAS VALVE
AND TRANSFORMER
OR OIL BURNER
CONTROL
Alternate Connections
For Type 809A Relay
TYPE 809 RELAY
2
3
{
TO ZONE
VALVES
Fig. 9 Diagram for Gas-Fired System using
842A-1 or 843A-1