Smith Cast Iron Boilers GB100W User Manual
Page 16
Page 16
GB100W NATURAL OR PROPANE BOILER
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 17: Multi Zone Diagram
CIRCULATOR
ZONE 2
LINE VOLTAGE
LOW VOLTAGE
CIRCULATOR
ZONE 1
R882C
ZONE 1
THERMOSTAT
R882C
ZONE 2
THERMOSTAT
CIRCULATOR
ZONE 3
R882C
ZONE 3
THERMOSTAT
1
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
Y
G
W
L2
L1
1
POWER
SUPPLY
C
R
W
1
3
BK
R8285D
1
L1
L2
POWER
SUPPLY
2
W
BK
2
1
24
VAC
N.O.
N.C.
COM.
N.O.
N.C.
COM.
W
B
W
B
N.O.
N.C.
COM.
N.O.
N.C.
COM.
W
B
N.O.
N.C.
COM.
N.O.
N.C.
COM.
SIZE ADDITIONAL TRANSFORMER 15VA PER EACH R882C ZONE RELAY THAT IS REQUIRED.
Figure 15: Multi Zone Diagram
Figure 16: Multi Zone Diagram
TH-TR
END SWITCH
TH
TR
TH-TR
END SWITCH
TH
TR
TH-TR
END SWITCH
TH
TR
(HOT)
1
L2
L1
CIRCULATOR
POWER
SUPPLY
2
V8043F
V8043F
V8043F
T87F ZONE 1
T87F ZONE 2
T87F ZONE 3
1
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
SIZE ADDITIONAL TRANSFORMER 8VA PER EACH V8043F ZONE VALVE THAT IS REQUIRED.
LINE VOLTAGE
LOW VOLTAGE
L2
L1
1
POWER
SUPPLY
Y
G
W
C
R
W
1
3
BK
R8285D
LINE VOLTAGE
LOW VOLTAGE
CIRCULATOR
ZONE 1
2
1
3
4
5
6
R845A RELAY
ZONE 1
TO ADDITIONAL
R845A RELAYS
FOR OTHER ZONES
LOW
VOLTAGE
THERMOSTAT
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
1
R8285D
Y
G
W
L
2
L
1
1
POWER
SUPPLY
C
R
W
1
3
BK