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Table of Contents
APPLICATION
The V48 and V88 are solenoid-operated diaphragm valves
suitable for LP (Liquefied Petroleum), natural, and
manufactured gases. They are normally used on atmospheric
boilers, commercial water heaters, and rooftop heaters.
® U.S. Registered Trademark
© 2004 Honeywell International Inc.
All Rights Reserved
V48A,F,J; V88A,J
Diaphragm Gas Valves
FEATURES
• 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.
• V48J, V88J rated for 150°F (66°C) 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).
• One model for natural and LP gases.
• Wide range of sizes and capacities.
• Firm closing; diaphragm is both weight and spring
loaded.
• Valve closes on power failure; recommended for final
shutoff service.
• Adjustable or fixed bleed orifices available for
installation by OEM.
• Valve position indicator on 1-1/4 in. V48A2227 and 2 in.
V48F1103 Valves.
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Wiring ...............................................................................
Operation ..........................................................................
Checkout and Troubleshooting .........................................
Service Information .......................................................... 10
PRODUCT DATA
Contents
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60-2080—9
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Table of Contents
Related Manuals for Honeywell V48F
Summary of Contents for Honeywell V48F
- Page 1 • Two second maximum closing time. • V48J, V88J rated for 150°F (66°C) 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.
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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 Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care... - 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...
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Page 4: Installation
V48A,F,J; V88A,J DIAPHRAGM GAS VALVES Accessories: 5. The second valve will be the same size as the first Transformer AT72D: (40 VA) for all V88 models. valve. 126590 Adjustable Bleed Valve Assembly: Consists of adjustable bleed valve with sleeve and compression nut for INSTALLATION connecting to 1/4 in. - Page 5 V48A,F,J; V88A,J DIAPHRAGM 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. 668 cf/h [1.0] 4 1 IN.
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Page 6: Wiring
V48A,F,J; V88A,J DIAPHRAGM GAS VALVES EXCESS DOPE MAY BLOCK 2 CLEAN DISC OFF WRONG THREADS, VALVE MODERATE NEVER USE VALVE SEAT AMOUNT AS A HANDLE OF DOPE LOOSE CHIPS RIGHT WRONG TOO LONG, NORMAL FULL DISTORTS VALVE THREAD SEAT WRONG RIGHT REAM PIPE, BLOW OUT... - Page 7 V48A,F,J; V88A,J DIAPHRAGM GAS VALVES 3. For normal installations, use moisture-resistant No. 14 connection. Then alternately energize and de-energize the wire suitable for at least 167°F (75°C) if using a flame valve actuator, and adjust the screw on the bleed valve for the safeguard primary control, or for at least 194°F (90°C) if desired valve opening time.
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Page 8: Operation
V48A,F,J; V88A,J DIAPHRAGM GAS VALVES OPERATION Operation of the V48 and V88 Valves (Fig. 10) When the controller is not calling for heat, the coil is de-energized. The plunger in the 3-way actuator is in the DOWN position so the bleed port is closed and the supply port BLEED TAPPING is open. -
Page 9: Checkout And Troubleshooting
V48A,F,J; V88A,J DIAPHRAGM GAS VALVES CHECKOUT AND TROUBLESHOOTING of the valve flows out through the bleed port. This reduces the pressure on top of the diaphragm, allowing the gas pressure below to lift the diaphragm and open the valve. WARNING When all the gas has bled off the top of the diaphragm, the valve is fully open, permitting gas flow to the main burner. -
Page 10: Service Information
V48A,F,J; V88A,J DIAPHRAGM GAS VALVES 4. If there is still no voltage at the actuator, make sure all 3. Disconnect the external wires from the two internal the appropriate contacts in the thermostat (or black leadwires (Fig. 12). controller), limit(s), and flame safeguard control are 4. - Page 11 V48A,F,J; V88A,J DIAPHRAGM GAS VALVES WRAPAROUND METAL COVER HOLDING NUT COIL ASSEMBLY COIL ASSEMBLY CARDBOARD INSULATOR HOOKED TOGETHER GROUNDING SCREW CARDBOARD INSULATOR METAL BASE ACTUATOR HOUSING M7304 BLACK LEADWIRES 2 TORX 20 SCREWS HOLDING Fig. 15. Coil assembly, insulator, and cover. ACTUATOR HOUSING M7301 CAUTION...
- Page 12 V48/V88 valve is to be 9. Slowly open the test petcock (F). checked for tightness of closure. Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422...