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Connect Pilot Gas Tubing
1. Cut tubing to desired length and bend as necessary
for routing to pilot burner. Do not make sharp bends or
deform the tubing. Do not bend tubing at gas control or
pilot burner after compression fitting has been tightened
because this can result in gas leakage at the connection.
2. Square off and remove burrs from end of tubing.
3. Unscrew compression fitting from the pilot outlet
(Fig. 3). Slip the compression fitting over the tubing and
slide out of the way.
NOTE: When replacing a entire gas control, cut off old
compression fitting and replace with the new compres-
sion fitting provided on the gas control. Never use the
old compression fitting because it may not provide a
gas-tight seal.
4. Push tubing into the pilot gas tapping on the outlet
end of the control until it bottoms. While holding tubing all
the way in, slide compression fitting into place, engage
threads and turn until finger tight. Then tighten one more
turn with wrench. Do not over tighten. Refer to Fig. 5.
5. Connect other end of tubing to pilot burner according
to pilot burner manufacturer instructions.
WIRING
Follow the wiring instructions furnished by the appliance
manufacturer, if available, or use the general instructions
provided.
Fig. 6—VR8404 wiring connections in intermittent ignition system with S86.
1
L1
L2
(HOT)
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
ALTERNATE LIMIT CONTROLLER LOCATION.
3
MAXIMUM CABLE LENGTH 3 FEET [0.9 METER].
4
CONTROLS IN 24V CIRCUIT MUST NOT BE IN GROUND LEG TO TRANSFORMER.
69-0814—1
2
THERMOSTAT OR
CONTROLLER
S86F,H/S860D
24V
(1) (GND)
24V
(2)
AIR PROVING
SWITCH
(BURNER)
COMBUSTION
AIR BLOWER
RELAY
COMBUSTION
AIR BLOWER
MOTOR
Q345, Q364, Q348, Q362,
Q381 PILOT BURNER/
IGNITER-SENSOR
3
4
Fig. 5—Always use new compression fitting.
GAS CONTROL BODY
TIGHTEN NUT ONE TURN
BEYOND FINGER TIGHT
FITTING BREAKS OFF AND CLINCHES
TUBING AS NUT IS TIGHTENED
All wiring including insulated quick connect terminals
must comply with applicable electrical codes and ordinances.
Disconnect power supply before making wiring connec-
tions to prevent electrical shock or equipment damage.
1. Check the power supply rating on the gas control and
make sure it matches the available supply. Install trans-
former, thermostat, and other controls as required.
2. Connect control circuit to gas control terminals. See
Figs. 3 and 6 or 7.
3. Adjust thermostat heat anticipator to 1.4A rating
stamped on gas control.
LIMIT
CONTROLLER
L1
(HOT)
4
L2
QUICK
CONNECTS
3
MV
MV
MV/PV
MV/PV
PV
PV
GND
PILOT
BURNER
GROUND
PILOT GAS
SUPPLY
TO
BURNER
M3076A
1
VR8404
GAS
CONTROL
M8055
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