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Bobcat Models B-120A and B-200A
23
Figure 17c. Multizoning of Bobcat boiler; pump zoning system using R882A/B relays.
LI
L2
1
DISCONNECT
SWITCH
120V/24V
T
RANSFORMER
FIELD WIRING
TERMINALS
ON BOILER
C
IRC.
ZONE 3
ZONE 3
THERMOSTAT
1
P
OWER SUPPLY, PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
MULTIZONING OF "BOBCAT" BOILER;
PUMP ZONING SYSTEM USING R882A/B RELAYS
C
IRC.
ZONE 2
R882A/B
R882A/B
ZONE 2
THERMOSTAT
C
IRC.
ZONE 1
R882A/B
ZONE 1
T
HERMOSTAT
120V/60HZ
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1
2
TT
3
4
56
LI
L2
1
1
POWER SUPPLY, PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
DISCONNECT
SWITCH
R845A
RELAY
THERMOSTAT
CIRCULATOR
FIELD WIRING
TERMINALS
ON BOILER
Figure 17d. Single zoning of Bobcat boiler; pump
zoning system using R845A relay.
Figure 17e. Single zoning of Bobcat boiler; pump zoning sys-
tem using R882A/B relay.
LI
L2
1
1
1 2 3 4 5 6 7 8
POWER SUPPLY, PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
DISCONNECT
SWITCH
THERMOSTAT
CIRCULATOR
R 882A/B
RELAY
120 V / 24 V
TRANSFORMER
FIELD WIRING
TERMINALS
ON BOILER