Honeywell VR8200A User Manual

G.S. • Rev. 1-94 • ©Honeywell Inc. 1994 • Form Number 68-0046—4
CONTENTS
Specifications ................................................2
Ordering Information .................................... 2
Installation .................................................... 4
Startup and Checkout ....................................9
Maintenance ................................................ 12
Operation .................................................... 12
Service ......................................................... 15
VR8200; VR4200
Combination Gas Controls
VR4200
VR8200
(TRADELINE)
The VR8200 Continuous Pilot Dual Automatic
Valve Combination Gas Controls are used in gas-
fired, standing pilot appliances. They include safety
shutoff, a manual valve, two automatic operators, a
pressure regulator, a pilot adjustment, and a conduit
cover (VR4200 only).
■ VR8200 for use with 24 Vac heating appliances and
VR4200 for use with 120 Vac heating appliances
that burn natural or liquefied petroleum (LP) gas.
■ Capacity rated at 130 feet
3
/hour at 1 inch wc pres-
sure drop [3.7 m
3
/hr at 0.25 kPa]. Maximum regu-
lated capacity is 200 feet
3
/hour [5.7 meter
3
/hour].
Minimum regulated capacity is 20 feet
3
/hour
[0.6 meter
3
/hour].
■ Solenoid-operated first automatic valve opens on
thermostat call for heat and closes when call for
heat ends.
■ Diaphragm-operated second automatic valve opens
under control of the regulator and closes if gas or
power supply is interrupted.
■ Three-position manual gas control knob has ON,
OFF, and PILOT positions.
■ Separate reset button must be held down to permit
gas flow while lighting pilot; can be pushed down
only in PILOT position.
■ All adjustments, wiring connections and pilot out-
let are accessible from the top of the gas control.
■ Compact size.
■ Straight-through body pattern; right angle adapters
available for inlet and outlet
■ 1/2 in. inlet and 1/2 inch outlet; adapters available
for 3/8 or 3/4 inch.
■ Adjustable servo regulator effectively maintains
almost constant gas output pressure under wide
fluctuation in gas supply pressure.
■ Inlet and outlet screens included.
■ Pilot filter included.
■ Wiring terminal block color-coded beige to identify
standing pilot models.
■ May be installed at any angle between 0 and 90 degrees
from the upright position, including vertically.
■ 1/4-inch male quick-connect terminals for electri-
cal connections. Combination screw and quick-
connect terminals on TRADELINE
®
models.
■ 0° F to +175° F [-18° C to +79° C] temperature
range standard; -40° F to +175° F [-40° C to 79° C]
available.
■ ECO connector included with some models: also
available as accessory.
■ Inlet and outlet pressure taps included; both taps
accessible from top of gas control.
■ Standard-, slow- and step-opening models available.
■ Natural to LP gas conversion kit included with
TRADELINE standard and slow-opening models.
Natural to LP gas conversion kit available for non-
TRADELINE standard and slow-opening models.
■ LP to natural gas conversion kit available for stan-
dard and slow-opening models.
This is a legacy product document supported by
Resideo. This product is no longer manufactured.

Honeywell VR8200A Specifications

General

Voltage Rating	24 VAC
Type	Gas Valve
Gas Type	Natural Gas
Voltage	24 VAC
Frequency	60 Hz

Summary

Product Specifications

Standard Model Specifications

Details standard VR8200/VR4200 specs, voltage, power, and thermocouple.

Model-Specific Tables and Ordering

Model specs, gas capacity, flange data, and ordering information tables.

Installation Procedures

General Warnings, Prep, and Gas Conversion

Crucial safety warnings, prep, and procedures for gas type conversion.

Pressure, Mounting, Location, Options, and Accessories

Details on pressure, mounting, location, approvals, options, and accessories.

Bushings, Flanges, and Conversion Kits

Instructions for installing bushings, flanges, and conversion kits.

Adapters, Piping, and Control Mounting

Guidance on adapters, location, piping, and control mounting.

Thermocouple and Pilot Tubing Installation

Instructions for installing thermocouple and pilot gas tubing.

Electrical Wiring and Connections

General instructions and diagrams for wiring the gas control.

Startup and Checkout

Knob Settings and Gas Leak Test

Knob settings explanation and critical gas leak test procedure.

Pilot Burner Ignition and Adjustments

Step-by-step pilot lighting, adjustment, and main burner checks.

Safety Shutdown Performance Check

Essential steps to verify the safety shutdown functionality of the control.

Maintenance

Preventive Maintenance Importance

Discusses the importance of regular preventive maintenance for the gas control.

Operation Modes

Valve Position During Thermostat Off Cycle

Describes valve positions when the thermostat is not calling for heat.

Operation When Thermostat Calls for Heat

Explains how the control operates when a call for heat is received.

Standard Pressure Regulation

Details servo pressure regulator for consistent main burner flow.

Slow/Delayed Opening Regulation

Explains the operation of slow-opening and delayed gas controls.

Step-Opening Pressure Regulation

Describes the dual-stage pressure regulation in step-opening models.

Operation When Call for Heat Ends

Details control's operation when the thermostat call for heat ceases.

Safety Shutoff Operation

Explains the safety shutoff mechanism and its triggering conditions.

Gas Control Knob to OFF

Describes the effect of turning the gas control knob to the OFF position.

Pilot Flame Extinguishment Reaction

Explains how the control reacts when the pilot flame extinguishes.

Service and Troubleshooting

Pilot Burner Ignition Issues

Troubleshooting steps for a pilot burner that fails to ignite or stay lit.

Main Burner Operation Issues

Troubleshooting steps for main burner failure to come on or overfiring.

Homeowner Safety and Lighting Instructions

Essential safety warnings and operating instructions for homeowners.

Appliance Shutdown Procedures

Procedures for turning off the appliance for vacation or complete shutdown.