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Bobcat Models B-120A and B-200A
22
1
END
SWITCH
T
H-TR
MOTOR
2
T
TT T TT TT TT TT T TT
T
T
3
456
S
PA CE
HEATING
S
YSTEM
CIRCULATOR
END
S
WITCH
TH-TR
MOTOR
Z
ONE 2
THERMOSTAT
V8043E/F
END
S
WITCH
T
H-TR
MOTOR
ZONE 3
THERMOSTAT
V8043E/F
1 2 3 4 5 6 7 8
FIELD WIRING
T
ERMINALS
O
N BOILER
JUMPER
R
845A
R
ELAY
LI
L2
1
ZONE 1
THERMOSTAT
120V/24V
T
RANSFORMER
1
POWER SUPPLY, PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
MULTIZONING OF "BOBCAT" BOILER;
ZONE VALVE SYSTEM USING V8043E/F ZONE VALVES AND R845A RELAY
DISCONNECT
SWITCH
V8043E/F
Figure 17a. Multizoning of Bobcat boiler; zone valve system.
Figure 17b.
Multizoning of Bobcat boiler;
pump zoning system using R845A rela
y
.
1 23 4 56 78
FIELD WIRING
TERMINALS
ON BOILER
1
2
TT
3456
TT TT
LI
L2
DISCONNECT
SWITCH
1
R845A
RELAY ZONE 3
CIRC.
ZONE 3
R845A
RELAY ZONE 2
CIRC.
ZONE 2
R845A
RELAY ZONE 1
CIRC.
ZONE 1
ZONE 3
THERMOSTAT
ZONE 2
THERMOSTAT
ZONE 1
THERMOSTAT
1
POWER SUPPLY, PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
MULTIZONING OF "BOBCAT" BOILER;
PUMP ZONING SYSTEM USING R845A RELAY
1
23456
1
23456