Honeywell Electronic Aquastat L7148F Manual page 9

4
D892/D896/M892/M896
4
3
2
1
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.
AFTER VENT DAMPER IS PLUGGED INTO L7148F, FUSE BLOWS WHEN THERMOSTAT FIRST
3
CLOSES. AFTER FUSE BLOWS, L7148F OPERATES ONLY WHEN VENT DAMPER IS CONNECTED.
4 SEE VENT DAMPER PRODUCT SPECIFICATIONS FOR INTERNAL SCHEMATICS.
5
S1 IS A 3/16 INCH QUICK CONNECT TERMINAL; S2 IS 1/4 INCH.
THIS DEVICE HAS AMP © PLUGS.
6
7
C, COM, Z, B2, G ARE ALL CONNECTED INSIDE DEVICE.
8
FOR EXTERNAL TRANSFORMER VA REQUIREMENTS, REFER TO APPLICATION SECTION.
Fig. 9. Wiring L7148F with AMP plug connections and internal plug directly to
D892/D896/M892/M896 Vent Damper in hydronic intermittent pilot system.
DISCONNECT
SWITCH
L1
1
L2
L7148F
CABLE
4
2
FUSE
2
3
3
5
1
6-PRONG FEMALE MOLEX
RECEPTACLE IN L7148F
AND 5-PRONG MALE
MOLEX PLUG ON CABLE
9
L7148F ELECTRONIC AQUASTAT
S8600
CIRCULATOR
7
6
C1 G
L2X
L1X
L1 C2 L2
HIGH LIMIT DIAL
HIGH LIMIT CONTACTS
7
COM
7
DATA
PORT
C W
TO ADVANCED
FEATURE
MODULE
COM
®
CONTROLLER
8
L2X
R
C
L1X
6
7 7
C
B2
B1
R
R
6
3
5
S1 S2
R
TO BOILER
SENSOR
24V THERMOSTAT
M11480B
68-0189—2