Honeywell V4944 manual

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Table of contents for the manual

  • Page 1

    PRODUCT DATA 65-0214-08 V4943/V8943B,C,N; V4944/V8944B,C,L,N Regulating Diaphra gm Gas V alves APPLICATION The V4943/V8943B and N (single stage) and V49 44/V8944B and N (two stage) are solenoid-operated diaphragm valves suitable f or natural gas only . The V4943/V8943C and V4944/V8944C and L are solenoid-ope rated diaphragm valv es suitable f or Li[...]

  • Page 2

    V4943/V8943B,C ,N; V4944/V8944B,C,L, N REGULATI NG DIAPHRAGM GA S V ALVES 65-0214—0 8 2 OR DERING INF ORMATION When purchasing replacement and moder nizat ion products from your TRADELINE® wholesaler or distributor , ref er to the TRADELINE® Catalog or pri ce sheets for complete order ing number . If y ou hav e additional que stions, need fur t[...]

  • Page 3

    V4943/V8943B,C ,N; V4944/V8944B,C ,L,N REGULATING DIAPHRAGM GAS V ALV ES 3 65-0214—0 8 Pressure Reference P ort Vent: 5/16–24 UNF inter nal tapping. Standard F actory Settings: See T able 3. Dimensions: See Fig. 1. We i g ht : 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 V4943 is a single-stage valv e, pleas[...]

  • Page 4

    V4943/V8943B,C ,N; V4944/V8944B,C,L, N REGULATI NG DIAPHRAGM GA S V ALVES 65-0214—0 8 4 Fig. 1. V4943/44 and V8943/4 4 dimensions in in. (mm). Gas V alve Sizing 1. Chec k the b urner namepl ate f or: a. the type of gas used, and b . the gas flow capacity . The capacity will be listed in British ther mal units per hou r (Btuh) or in cubic feet per[...]

  • Page 5

    V4943/V8943B,C ,N; V4944/V8944B,C ,L,N REGULATING DIAPHRAGM GAS V ALV ES 5 65-0214—0 8 Fig. 3. C apacity vs. pres sure dr op of Natural Gas curves for 1-1/4 in. v alve. Fig. 4. C apacity vs. pres sure dr op of Natural Gas curves for 1-1/2 in. v alve. Fig. 5. Capacity vs. pres sure drop of Natural Gas curves for 2 in. valve. Fig. 6. Capacity vs. p[...]

  • Page 6

    V4943/V8943B,C ,N; V4944/V8944B,C,L, N REGULATI NG DIAPHRAGM GA S V ALVES 65-0214—0 8 6 Fig. 7. Capacity vs. pr essure drop of LP Gas curves for 1-1/4 in. v alve. Fig. 8. Capacity vs. pr essure drop of LP Gas curves for 1-1/2 in. v alve. Fig. 9. Capacity vs. pressure drop of LP Gas curves for 2 in. valve. T o size tw o identical v alves piped in [...]

  • Page 7

    V4943/V8943B,C ,N; V4944/V8944B,C ,L,N REGULATING DIAPHRAGM GAS V ALV ES 7 65-0214—0 8 When Installing this Pr oduct... 1. Read these instructions carefully . F ailure to follo w them could damage the product o r cause a hazardo us condition. 2. Check the r atings given in the instructions and on the product to make sure the product is suitable f[...]

  • Page 8

    V4943/V8943B,C ,N; V4944/V8944B,C,L, N REGULATI NG DIAPHRAGM GA S V ALVES 65-0214—0 8 8 Fig. 10. Preparing the pipi ng and in stalling the v alve. Wiring WARNING Electrical Shock Hazar d. Can cause serious injury , de ath or equipment damage . Disconnect the power supply before making connections to prev ent electrical shock and equipment damage.[...]

  • Page 9

    V4943/V8943B,C ,N; V4944/V8944B,C ,L,N REGULATING DIAPHRAGM GAS V ALV ES 9 65-0214—0 8 Fig. 11. T ypical wirin g diagram for V4943B,N. Fig. 12. T ypical wiring diag ram for V8943B,C,N. Fig. 13. T ypical wiri ng diagram for V4944B,C,L,N with three leadwire electrical termination. Fig. 14. T ypical wiring diagra m for V8944B,C,L,N with three leadwi[...]

  • Page 10

    V4943/V8943B,C ,N; V4944/V8944B,C,L, N REGULATI NG DIAPHRAGM GA S V ALVES 65-0214—0 8 10 Operation of the V4943B,C,N/ V8943B,N The V4943/V8943B,C,N V alves are combination gas controls that include a single stage of pressure regula tion in addition to the shut-off function. They hav e a single solenoid and a single regulating diaphragm. When the [...]

  • Page 11

    V4943/V8943B,C ,N; V4944/V8944B,C ,L,N REGULATING DIAPHRAGM GAS V ALV ES 11 65-0214—0 8 Chec kout 1. V alve outlet pressure measurements are made a t a point appro ximately fiv e pipe diameters downstream from the valv e outlet. Consider pressure measurements made at the outlet pressure tap as ref erence measurements o nly , because turbulence an[...]

  • Page 12

    V4943/V8943B,C ,N; V4944/V8944B,C,L, N REGULATI NG DIAPHRAGM GA S V ALVES Automation and Control Solu tions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 customer.honeywell.com ® U .S. Re gistered T rademark © 2011 Hone ywell International Inc. 65-0214—08 M.S. Re v . 09-11 Printe d in United St ates T roub leshoo[...]