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Honeywell V48F Manual

Diaphragm gas valves
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The V48 and V88 are solenoid-operated dia-
phragm valves suitable for LP (Liquefied Petro-
leum), natural, and manufactured gases. They are
normally used on atmospheric boilers, commercial
water heaters, and rooftop heaters.
Line voltage, 2-wire thermostat or controller used
with a V48; V88 used with 24V thermostat.
Valves provide slow opening and fast closing.
Two second maximum closing time for 2 through
3 in. valves.
One second maximum closing time for 3/4 through
1-1/2 in. valves.
V48J, V88J rated for 150° F ambient temperature.
V48F rated for 5 psi (lb. per sq in.) [34.5 kPa].
V48A and V88A rated for either 1/2 or 1 psi [3.4 or
6.9 kPa], depending on model. V48J and V88J rated
for 1 psi [6.9 kPa].
V48A,F,J; V88A,J
Diaphragm Gas Valves
One model for natural and LP gases.
Wide range of sizes and capacities.
Firm closing; diaphragm is both weight and spring
Valve closes on power failure; recommended for
final shutoff service.
Adjustable or fixed bleed orifices available for in-
stallation by OEM.
Valve position indicator on 1-1/4 in. V48A2227 and
2 in. V48F1103 Valves.
Specifications ............................................... 2
Ordering Information .................................. 2
Installation ................................................... 5
Operation ..................................................... 8
Checkout and Troubleshooting ................... 9
Service Information ................................... 10
F.P. • Rev. 9-94 • ©Honeywell Inc. 1994 • Form Number 60-2080-8



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  Summary of Contents for Honeywell V48F

  • Page 1: Table Of Contents

    V48J, V88J rated for 150° F ambient temperature. stallation by OEM. V48F rated for 5 psi (lb. per sq in.) [34.5 kPa]. Valve position indicator on 1-1/4 in. V48A2227 and V48A and V88A rated for either 1/2 or 1 psi [3.4 or 2 in.
  • Page 2: Specifications

    If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Home and Building Control Sales Office (check white pages of phone directory). 2. Home and Building Control Customer Logistics Honeywell Inc., 1885 Douglas Drive North...
  • Page 3 120V, 60 Hz 3/4, 1, 1-1/4, 1-1/2 1, 1-1/4, 1-1/2, 2, 2-1/2, 3 220V, 50 Hz 1, 1-1/4, 1-1/2, 2, 3 BSP.PI 240V, 50 Hz V48F 120V, 60 Hz 34.5 V48J 120V, 60 Hz 3/4, 1, 1-1/4, 1-1/2, 2 110V, 50 Hz...
  • Page 4 V48A,F,J; V88A,J SPECIFICATIONS TABLE 2—EXTENDING VALVE OPENING TIME BY ADDING A BLEED ORIFICE. Valve Opening Time (sec) Orifice no. 122160, Orifice no. 124674, Valve Size (in.) No. Orifice 0.018 in. [0.46 mm] 0.011 in. [0.28 mm] 1-1/4 1-1/2 2-1/2 Time to reach 80% gas flow at fully open position. Inlet pressure; 4.2 in. wc [1.05 kPa] for 1 to 2 in. valves; 5 in. wc [1.25 kPa] for 2-1/2 and 3 in.
  • Page 5: Installation

    V48A,F,J; V88A,J SPECIFICATIONS • INSTALLATION Fig. 2—Pressure drop vs. capacity chart for sizing gas valves. PRESSURE DROP VS. CAPACITY [2.5] 10 FOR 0.64 SP GR. GAS [2.0] 8 A.G.A.RATING FOR [1.5] 6 0.64 SP. GR. GAS AT 1 IN. PRESSURE DROP VALVE SIZE CAPACITY 3/4 IN.
  • Page 6 V48A,F,J; V88A,J INSTALLATION 3. Apply good quality pipe dope, putting a moderate CAUTION amount on the male threads only. If pipe dope lodges on the valve seat, it will prevent proper closure. If using liquefied 1. Turn off gas supply before starting installation. petroleum (LP) gas, use pipe dope resistant to action of LP 2.
  • Page 7 V48A,F,J; V88A,J INSTALLATION CONNECT PILOT AND BLEED GAS TUBING b. If a conduit is required, run the conduit through the (FIG. 4) opening in the actuator housing, and run the external 1. Square off and remove burrs from end of the tubing. wires through the conduit.
  • Page 8: Operation

    V48A,F,J; V88A,J INSTALLATION • OPERATION INSTALLATION OF AN OPTIONAL ADJUSTABLE INSTALLATION OF AN OPTIONAL BLEED BLEED VALVE (FIG. 8) ORIFICE (FIG. 9) NOTE: This device is not available for valves with BSP.PI NOTE: The orifice tool cannot be used on valves with threads.
  • Page 9: Checkout And Troubleshooting

    V48A,F,J; V88A,J OPERATION • CHECKOUT AND TROUBLESHOOTING In the event of a power failure during automatic opera- tion, all V88 and V48 valves will close. Normal operation Fig. 10—Operation of V48 and V88 diaphragm will be resumed upon power restoration. gas valves.
  • Page 10: Service Information

    V48A,F,J; V88A,J CHECKOUT AND TROUBLESHOOTING • SERVICE INFORMATION CHECKOUT 3. For a V88 only: If a line voltage power is okay, check Start the system and observe its operation through at the transformer. Replace it if necessary. least one complete cycle to be sure the valve functions as 4.
  • Page 11 V48A,F,J; V88A,J SERVICE INFORMATION 17. Replace the housing cover, and tighten the cover screw holding it to the actuator housing (Fig. 12). Fig. 14—Coil assembly fits on plunger tube 18. Close the master switch. assembly 19. Test the valve to make sure it opens and closes as COIL ASSEMBLY described in the Operation section.
  • Page 12 Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 QUALITY IS KEY 60-2080—8 Printed in U.S.A.

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