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