Honeywell VR4300 Manual Download Page 2

Installation

WHEN INSTALLING THIS PRODUCT…

1. Read these instructions carefully. Failure to follow

them could damage the product or cause a hazardous condi-
tion.

2. Check the ratings given in the instructions and on the

product to assure the product is suitable for your application.

3. Assure installer is a trained, experienced service tech-

nician.

4. After installation is complete, use these instructions to

check out product operation.

WARNING

FIRE OR EXPLOSION HAZARD CAN
CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH

Follow these warnings exactly:
1. Disconnect power supply before wiring to prevent

electrical shock or equipment damage.

2. To avoid dangerous accumulation of fuel gas,

turn off gas supply at the appliance service valve
before starting installation, and perform Gas
Leak Test after completion of installation.

3. Do not bend pilot tubing at gas control or pilot burner

after compression fitting has been tightened because
gas leakage at the connection can result.

4. Always install sediment trap in gas supply line

to prevent contamination of gas control.

5. Do not force the gas control knob. Use only your

hand to push down the reset button or turn the
gas control knob. Never use any tools. If the gas
control knob or reset button will not operate by
hand, replace the gas control using a qualified
service technician. Force or attempted repair can
result in fire or explosion.

CAUTION

Never apply a jumper across or short the valve coil
terminals. This may burn out the heat anticipator in
the thermostat.

IMPORTANT:

1. These gas controls are shipped with protective seals

over inlet and outlet tappings. Do not remove seals
until ready to connect piping.

2. When a gas control is installed external to the appli-

ance, a conduit cover MUST be installed. Make sure
that condui

t cover is placed over the flange before

rotating conduit cover into position.

Follow the appliance manufacturer’s instructions if avail-

able; otherwise, use the instructions provided below.

CONVERTING BETWEEN NATURAL AND LP GAS

WARNING

FIRE OR EXPLOSION HAZARD CAN
CAUSE PROPERTY DAMAGE, SEVERE
INJURY, OR DEATH

Do not use a gas control set for natural gas on LP gas
or a gas control set for LP gas on natural gas.

To convert a gas control from natural gas to LP gas or

from LP gas to natural gas, contact your Honeywell
representative.

Convert standard- or slow-opening gas controls from

one gas to another with a conversion kit (ordered sepa-
rately). Order part number 393691 to convert from natural
to LP gas. Order part number 394588 to convert from LP
to natural gas. Step-opening gas controls cannot be con-
verted.

INSTALL ADAPTERS TO CONTROL

If adapters are to be installed on the gas control, mount

them as follows:

Flanges

1. Choose the appropriate flange for your application.
2. Remove seal over gas control inlet or outlet.
3. Assure the O-ring is fitted in the groove of flange. If

the O-ring is not attached or is missing, do not use flange.

4. With O-ring facing gas control, align the screw

holes on the gas control with the holes in the flange. Insert
and tighten the screws provided with the flange. See Fig.
1. Tighten the screws to 25 inch pounds of torque to
provide a gas-tight seal.

Bushings

1. Remove seal over gas control inlet or outlet.
2. Apply moderate amount of good quality pipe com-

pound to bushing, leaving two end threads bare. On LP
installation, use compound resistant to LP gas. Do 

not 

use

Teflon tape.

3. Insert bushing in gas control and thread pipe care-

fully into bushing until tight.

Complete instructions below for piping, installing gas

control, connecting pilot tubing, thermocouple and wir-
ing. Make certain the leak test you perform on the control
after completing the installation includes leak testing the
adapters and screws. If you use a wrench on the valve after
flanges are installed, use the wrench on only the flange,
not on the control.

USING ADAPTERS TO SOLVE SWING RADIUS
PROBLEMS

In some field service applications, it is difficult or

impossible to thread the gas control onto the gas supply
pipe because of space limitations. This problem can be
resolved in many applications by using an adapter. Install
the adapter on the end of the supply pipe in place of the gas

2

M3098A

VALVE OUTLET

FLANGE

9/64 INCH HEX SCREWS (4) 

1

DO NOT OVERTIGHTEN SCREWS.
TIGHTEN TO 25 INCH POUNDS.

1

6/32 INCH ROUND
SCREWS (1) 

CONDUIT
COVER

Fig. 1—Install flange to gas control.

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Summary of Contents for VR4300

Page 1: ...ontinuous pilot gas controls are used in gas fired applianceswithcapacitiesupto300feet3 houratoneinchwc pressure drop 5 7 meters3 hour at 0 25 kPa on natural gas They include a manual valve safety shutoff two automatic operators a pressure regulator pilot adjustment and a con duit cover See Table 1 for temperature ranges and regulator types BODY PATTERN Straight through body pattern INLET X OUTLET...

Page 2: ...gascontrolsetfornaturalgasonLPgas or a gas control set for LP gas on natural gas To convert a gas control from natural gas to LP gas or from LP gas to natural gas contact your Honeywell representative Convert standard or slow opening gas controls from one gas to another with a conversion kit ordered sepa rately Order part number 393691 to convert from natural to LP gas Order part number 394588 to ...

Page 3: ...as Control 1 Mount the gas control 0 90 degrees in any direction including vertically from the upright position of the gas control knob 2 Mount the gas control so gas flow is in the direction of the arrow on the bottom of the gas control 3 Thread pipe the amount shown in Table 4 for inser tion into gas control Do not thread pipe too far Valve distortion or malfunction may result if the pipe is ins...

Page 4: ...ply before making wiring con nections to prevent electrical shock or equipment damage 1 Checkthepowersupplyratingonthegascontroland assure it matches the available supply Install thermostat and other controls as required 2 When the gas control is installed external to the appliance install the conduit cover on the conduit fitting Do not secure conduit cover at this time 3 Connect control circuit t...

Page 5: ...Inches Meters Inches Meters Inches Meters 12 0 3 47 1 2 30 0 8 18 0 5 18 0 5 41 1 0 26 0 7 16 0 4 24 0 6 35 0 9 22 0 6 14 0 4 30 0 8 29 0 8 18 0 5 11 0 3 36 0 9 23 0 6 15 0 4 9 0 2 40 1 0 19 0 5 12 0 3 7 0 2 48 1 2 11 0 3 7 0 2 60 1 5 Do not use Fig 7 Installing thermocouple to the power unit Fig 8 Wiring connections for 120 volt control 5 69 0683 1 120V THERMOSTAT POWER SUPPLY PROVIDE DISCONNECT ...

Page 6: ...ascontrolknobdownaboutoneminute then release If the pilot flame goes out turn the gas control knob clockwise to OFF and repeat steps 1 through 3 If pilot flame remains lit turn the gas control knob counterclockwise to ON ADJUST THE PILOT BURNER FLAME The pilot flame should envelop 3 8 to 1 2 inch 10 to 13 millimeters of the thermocouple tip Refer to Fig 9 To adjust the pilot flame 1 Remove the pil...

Page 7: ...er operation 4 If desired outlet pressure or flow rate cannot be achieved by adjusting the gas control check the inlet pressure using a manometer at inlet pressure tap or up stream of the gas control If the inlet pressure is in the normalrange refertoTable7or8 replacetheexistinggas control Otherwise take the necessary steps to provide proper gas pressure to the gas control 5 Carefully check main b...

Page 8: ...e energizing step opening model to assure lightoff at step pressure IFTHEPILOTBURNERFLAMEWILLNOTLIGHT 1 Assure the main gas supply valve is open and the pilot gas supply line is purged of air 2 Attempt to light pilot burner flame following proce dures in Light the Pilot Burner Flame page 6 If pilot burner flame still will not light a Check the pilot gas adjustment screw If closed readjust the pilo...

Page 9: ...c power to the appliance 3 Remove the gas control access panel 4 Push in the gas control knob slightly and turn clock wise to OFF NOTE The gas control knob cannot be turned from PILOT to OFF unless it is pushed in slightly Do not force the gas control knob 5 Wait five minutes to clear out any unburned gas If you then smell gas STOP Follow step 3 in the Warnings above If you do not smell gas contin...

Page 10: ...nd Building Control Helping You Control Your World Honeywell Inc Honeywell Limited Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley Minnesota 55422 Scarborough Ontario M1P 2V9 QUALITY IS KEY Printed in U S A ...

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