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L8104A,B,C,D
INSTALLATION
Fig. 5—L8104A with board-mounted potentiometer in a standing pilot application.
Q308
1
L1
(HOT)
L2
Fig. 6—L8104A with remote potentiometer in an electronic ignition application.
S8600F,H,M;
S8610F,H
MV MV/PV PV
1
L1
(HOT)
L2
68-0063—3
L8104A
COM.
2
RELAY
NO
2
ECO
CONNECTOR
VR8200
TH
TR
GAS VLAVE
24V
L8104A
POT
COM.
4
RELAY
NO
4
VENT
GND
24V
TH-W
DAMPER
(BURNER)
GND 24V
(OPT)
PLUG (OPT)
24V
BLACK
3
SEN-1
BLACK
3
LOWER
3
24V
HOT
2
ONLY
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
2
1/4 IN. TAB TERMINALS (3).
3/16 IN. TAB TERMINALS (3).
3
1
2
3
3
BLACK
5
SEN-1
BLACK
5
LOWER
5
24V
PILOT
HOT
VALVE
4
ONLY
1ST
OPERATOR
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
SPARK
2
GAS CONTROL
VR844, VR8440
3
FACTORY INSTALLED JUMPER; DO NOT
REMOVE.
4
1/4 IN. TAB TERMINALS (3).
3/16 IN. TAB TERMINALS (3).
5
6
SENSING BULB WITH
ECO SWITCH
M131C
SETPOINT
POTENTIOMETER
(SHOWN FROM BACK)
SENSING BULB WITH
ECO SWITCH
MAIN
COM
VALVE
VR8440 OR
2ND
VR844
OPERATOR
2
TERMINAL DESIGNATIONS
PILOT
COM
MAIN
TH
TH-TR
TR
M128B
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