Honeywell VR8305, Quick Manual, Page: 7 / 16

VR8305
INSTALLATION
7 68-0109—3
1. This gas control can be mounted 0-90 degrees, in any
direction including vertically, from the upright position of the
gas control knob.
2. Mount the gas control so gas flow is in the direction of
the arrow on the bottom of the control.
3. Thread pipe the amount shown in Table 4 for insertion
into the gas control. DO NOT THREAD PIPE TOO FAR.
Valve distortion or malfunction may result if the pipe is
inserted too deeply into the gas control.
4. Apply a moderate amount of good quality pipe com-
pound (do not use Teflon tape) to pipe only, leaving two end
threads bare. On LP installations, use compound resistant to
LP gas. Refer to Fig. 6.
5. Remove seals over gas control inlet and outlet if
necessary.
6. Connect pipe to gas control inlet and outlet. Use
wrench on the square ends of the gas control. If an adapter is
used, place wrench on adapter rather than gas control. Refer
to Figs. 2 and 7.
WIRING
Follow the wiring instructions furnished by the appliance
manufacturer, if available, or use the general instructions
provided below.
All wiring 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 valve and ensure
it matches the available supply. Install transformer, thermo-
stat, and other controls as required.
2. Connect control circuit to gas control terminals. See
Figs. 2, 8 and 9.
3. Adjust thermostat heat anticipator to 0.70 rating
stamped on valve operator.
Fig. 8—VR8305 Wiring Connections in S87
Direct Ignition System.
Fig. 9—VR8305 Wiring Connections in S89C
Direct Ignition System.
24V
24V (GND)
S87 CONTROL MODULE
ALARM
VALVE
VALVE
GND
TEMPERATURE
CONTROLLER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
ALTERNATE LIMIT CONTROLLER LOCATION.
MAXIMUM IGNITER-SENSOR CABLE LENGTH: 3 ft. [.9 m] OR LESS.
3A REPLACEABLE FUSE.
ALARM TERMINAL PROVIDED ON SOME MODELS.
M9043
MV
MV
L1
(HOT)
L2
1
2
1
2
3
DUAL VALVE
COMBINATION
GAS CONTROL
Q347 IGNITER-SENSOR
BURNER
4
4
5
IGNITER-SENSOR AND
BURNER GROUND
3
5
ALARM, IF USED
HOT SURFACE
IGNITER-SENSOR
VALVE
VALVE (GND)
24V
24V (GND)
S89/S890 HOT SURFACE
IGNITION CONTROL
L2
HSI
L1
HSI
LIMIT
CONTROLLER
BURNER
GROUND
THERMOSTAT
OR CONTROLLER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED. MAKE SURE L1 AND L2 ARE NOT
REVERSED; THIS WOULD PREVENT FLAME DETECTION.
ALTERNATE LIMIT CONTROLLER LOCATION.
SEN TERMINAL AND Q354 FLAME SENSOR ON D MODELS ONLY.
M1508
L1
(HOT)
L2
1
2
1
2
3
3
3
SEN
Q354 FLAME
SENSOR
MV
MV
VR8305
COMBINATION
GAS CONTROL