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R845
RELAY
L1
(HOT)
1
L2
L8148A
G
L2
L1
2
C1
C2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
2
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. USE GROUNDING SCREW PROVIDED.
3
B1 IS 1/4 IN. TAB TERMINAL.
Fig. 5. Wiring L8148A in oil-fired, forced hot water, tankless, zoned, pump system.
D892/M892
POLARIZED 4-PRONG
MALE MOLEX PLUG AND
4-PRONG FEMALE
MATING PLUG ON CABLE
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
REMOVE PLUG-IN THAT JUMPERS PINS 2 AND 3 WHEN USING VENT
DAMPER.
3
AFTER VENT DAMPER IS PLUGGED INTO L8148E1265, FUSE BLOWS
WHEN THERMOSTAT FIRST CLOSES. AFTER FUSE BLOWS, L8148E1265
OPERATES ONLY WHEN VENT DAMPER IS CONNECTED.
4
SEE VENT DAMPER PRODUCT SPECIFICATIONS FOR INTERNAL
SCHEMATICS.
5
B1 IS 1/4 IN. TAB TERMINAL.
Fig. 6. Wiring L8148E1265 with internal plug directly to vent damper in hydronic intermittent pilot system.
T87F
T
T
4
1
2
3
6
5
PUMP
T
T
3
C554
B2
B1
4
197516A
CABLE
4
3
2
1
T87F
R845
T
T
4
1
2
3
5
PUMP
F
F
T
T
R8184G
L8148E1265
4
2
2
3
FUSE
3
5
1
6-PRONG FEMALE MOLEX
B1
RECEPTABLE IN L8148E
AND 5-PRONG MALE
5
MOLEX PLUG ON CABLE
24V GND
24V
5
L8148A,E,J AQUASTAT® RELAYS
T87F
T
T
6
1
2
3
PUMP
ORANGE
WHITE
BLACK
BURNER
AND
IGNITION
24 VAC
THERMOSTAT
TV
T
W
1K
Z
HIGH LIMIT
CONTROLLER
R
1K2
B
C1
C2
1K1
B2
L1
L2
1
L1
L2
(HOT)
S8600
M2763C
R845
4
6
5
M2843A
CIRCULATOR
95-6940—12
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