Page 3 - CAUTION
V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES 3 65-0214—08 Pressure Reference Port Vent: 5/16–24 UNF internal tapping. Standard Factory Settings: See Table 3. Dimensions: See Fig. 1. Weight: 1 in., 1-1/4 in. valves: 4 lb (1.8 kg). 1-1/2 in., 2 in. valves: 5 lb (2.3 kg). a V494...
Page 4 - Gas Valve Sizing
V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES 65-0214—08 4 Fig. 1. V4943/44 and V8943/44 dimensions in in. (mm). Gas Valve Sizing 1. Check the burner nameplate for: a. the type of gas used, and b. the gas flow capacity. The capacity will be listed in British thermal units per ...
Page 6 - To size two identical valves piped in series:; INSTALLATION; WARNING
V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES 65-0214—08 6 Fig. 7. Capacity vs. pressure drop of LP Gas curves for 1-1/4 in. valve. Fig. 8. Capacity vs. pressure drop of LP Gas curves for 1-1/2 in. valve. Fig. 9. Capacity vs. pressure drop of LP Gas curves for 2 in. valve. To ...
Page 8 - Wiring
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 elec...
Page 9 - OPERATION; General
V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES 9 65-0214—08 Fig. 11. Typical wiring diagram for V4943B,N. Fig. 12. Typical wiring diagram for V8943B,C,N. Fig. 13. Typical wiring diagram for V4944B,C,L,N with three leadwire electrical termination. Fig. 14. Typical wiring diagram...
Page 10 - Valves; CHECKOUT AND
V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES 65-0214—08 10 Operation of the V4943B,C,N/ V8943B,N The V4943/V8943B,C,N Valves are combination gas controls that include a single stage of pressure regulation in addition to the shut-off function. They have a single solenoid and a...
Page 11 - Checkout
V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES 11 65-0214—08 Checkout 1. Valve outlet pressure measurements are made at a point approximately five pipe diameters downstream from the valve outlet. Consider pressure measurements made at the outlet pressure tap as reference measur...
Page 12 - Troubleshooting; SERVICE INFORMATION; Scheduled Inspection and
V4943/V8943B,C,N; V4944/V8944B,C,L,N REGULATING DIAPHRAGM GAS VALVES Automation and Control Solutions Honeywell International Inc.1985 Douglas Drive NorthGolden Valley, MN 55422customer.honeywell.com ® U.S. Registered Trademark© 2011 Honeywell International Inc.65-0214—08 M.S. Rev. 09-11 Printed in ...