Honeywell V88A

1 60-2080—8
V48A,F,J; V88A,J
Diaphragm Gas Valves
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.
CONTENTS
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
■ 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].
■ 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 in-
stallation by OEM.
■ Valve position indicator on 1-1/4 in. V48A2227 and
2 in. V48F1103 Valves.

Honeywell V88A Specifications

General

Brand	Honeywell
Model	V88A
Category	Control Unit
Language	English

Summary

Honeywell V48 A,F,J; V88 A,J Diaphragm Gas Valves

Specifications

Ordering Information

Guidance on how to purchase replacement and modernization products, including order number and specifications.

Accessories

Details on optional accessories like transformers and adjustable bleed valve assemblies for V48/V88 valves.

Gas Valve Sizing

Procedure and chart for determining the correct gas valve size based on capacity and pressure drop.

Installation

Connecting Pilot and Bleed Gas Tubing

Instructions for connecting pilot and bleed gas tubing to the valve, including pipe preparation.

Wiring

Guidelines for electrical wiring connections, including safety precautions and typical diagrams.

Operation

Operation of the V48 and V88

Explanation of how the valve opens and closes based on controller signals and gas pressure.

Valve Position Indicator

Description of the optional valve position indicator and how to interpret its display.

Checkout and Troubleshooting

Checkout

Steps to verify valve functions through at least one complete operating cycle.

Troubleshooting

Guidance for diagnosing and resolving common issues when the valve does not open or close.

Service Information