Honeywell Aquastat L8148A Product Data page 10

L8148A,E,J AQUASTAT® RELAYS
L8148E (STANDARD MODELS)
4
G
L1
1
L2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
REMOVE PLUG ONLY IF USING VENT DAMPER. WITH PLUG REMOVED AND VENT DAMPER CONNECTED, FUSE BLOWS
2
WHEN THERMOSTAT FIRST CLOSES. THEN MODULE OPERATES ONLY WHEN VENT DAMPER IS CONNECTED.
3 CAREFULLY FOLLOW WIRING; MISWIRING COULD RESULT IN CONSTANT ON.
4
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. USE GROUNDING SCREW PROVIDED.
5
B1 IS 1/4 IN. TAB TERMINAL.
Fig. 11. Wiring L8148E with S8610A,F Intermittent Pilot Ignition Module with
D892/M892
POLARIZED 4-PRONG
MALE MOLEX PLUG AND
4-PRONG FEMALE
MATING PLUG ON CABLE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
2 REMOVE PLUG-IN THAT JUMPERS PINS 2 AND 3 WHEN USING VENT
DAMPER.
AFTER VENT DAMPER IS PLUGGED INTO L8148E, FUSE BLOWS
3
WHEN THERMOSTAT FIRST CLOSES. AFTER FUSE BLOWS, L8148E
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. 12. Wiring L8148E with internal plug directly to D892/M892 Vent Damper in hydronic intermittent pilot system.
60-2278—9
THERMOSTAT
HIGH LIMIT
1K2
R
B
Z W T
1K
TV
3
automatic vent damper plug and Honeywell D892/M892 Vent Damper.
4 197516A
CABLE
4
3
2
1
S8610
GND
MV MV/PV PV (BURNER)
1K1
5
B1 C1
VR8304
B2
C2
L8148E
4
2
2
3
FUSE
3
5
1
6-PRONG FEMALE MOLEX
B1
RECEPTACLE IN L8148E
AND 5-PRONG MALE
5
MOLEX PLUG ON CABLE
24V GND
24V
10
VENT
24V
DAMPER
GND 24V TH-W PLUG
2
PV
PV
WIRING
MV
HARNESS
MV
D892/M892
M2298D
24 VAC
THERMOSTAT
TV T
W
1K
Z
HIGH LIMIT
CONTROLLER
R
1K2
B
C1 C2
1K1
B2 L1
L2
CIRCULATOR
1
L1
L2
(HOT)
M1624C
S8600
SPARK