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V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES
65-0214—08 8
Fig. 10. Preparing the piping and installing the valve.
Wiring
WARNING
Electrical Shock Hazard.
Can cause serious injury, death or equipment
damage.
Disconnect the power supply before making
connections to prevent electrical shock and equipment
damage.
1. All wiring must comply with applicable electrical codes,
ordinances and regulations. Use NEC Class 1 (line
voltage) wiring.
2. For normal installations, use moisture-resistant No. 14
wire suitable for at least 167°F (75°C) when using a
flame safeguard primary control, or for at least 194°F
(90°C) when using a flame safeguard programming
control.
3. For high temperature installations, use
moisture-resistant No. 14 wire selected for a temperature
rating above the maximum operating temperature.
4. Check the power supply circuit. The voltage and
frequency must match those of the valve.
5. See Fig. 11 through 14 for typical field wiring
connections. Follow the burner manufacturer wiring
diagram, if provided.
6. Make wiring connections at the electrical wires provided
at the top of the valve.
CAUTION
Equipment Damage Hazard.
Miswiring can cause equipment damage.
1. Label all wires prior to disconnection when servicing
valves. Wiring errors can cause damage to the
equipment through improper and dangerous
operation.
2. Verify proper operation after servicing.
3. After the installation is complete, cycle the valve
several times with the manual fuel shutoff cock
closed. Make sure the valve and actuator function
properly.
4. If the installation is gas tight and functioning properly,
proceed to the Checkout section.
CORRECT
WRENCH
CORRECTLY
APPLIED NEXT
TO PIPE BEING
INSERTED
INCORRECT
CORRECT
TWO CLEAN
THREADS,
MODERATE
AMOUNT
OF DOPE
EXCESS DOPE CAN PUSH DISK
OFF THE
VALVE
SEAT
LOOSE
CHIPS
NORMAL
FULL
THREAD
CORRECT
CORRECT
NORMAL
FULL THREAD
REAM PIPE,
BLOW OUT CHIPS (THAT
CAN LODGE ON SEAT)
TOO LONG;
DISTORTS
VALVE SEAT
INCORRECT
TOO LONG,
DISTORTS
VALVE SEAT
AVOID
USING
VALVE AS
HANDLE
VISE GRIPS
END NEXT
TO PIPE
BEING
INSERTED
INCORRECT
WRENCH
HERE STRAINS
VALVE BODY
M6877