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13

68-0047—2

Fig. 13—Position of gas control components during burner on cycle.

VR8204; VR4204

OPERATION • SERVICE

Service

WARNING

FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE,
SEVERE INJURY OR DEATH
Do not disassemble the gas control; it contains no
replaceable components. Attempted disassembly
or repair may damage the control.

CAUTION

Do not apply a jumper across (or short) the valve
coil terminals, even temporarily. Doing so may
burn out the heat anticipator in the thermostat or
damage the electronic module.

IMPORTANT: Allow 60 seconds after shutdown before

re-energizing step-opening model to ensure lightoff
at step pressure.

IF MAIN BURNER WILL NOT COME ON WITH
CALL FOR HEAT

1. Confirm that the gas control knob is in the ON

position.

2. Adjust thermostat several degrees above room tem-

perature.

3. Using ac voltmeter, check for voltage at gas control.

• If pilot lights, measure across MV/PV and MV.
• If pilot does not light, measure across MV/PV and

PV before safety lockout occurs.

4. If voltage is incorrect or not present, check control

circuit for proper operation.

5. If voltage is present, replace gas control.

!

!

FIRST 
AUTOMATIC
VALVE 
SOLENOID

CONTROL
KNOB

GAS 
CONTROL 
INLET

SECOND AUTOMATIC
VALVE OPERATOR

SECOND 
AUTOMATIC
OPERATOR 
SOLENOID

SECOND 
AUTOMATIC
OPERATOR 
VALVE DISC

SERVO PRESSURE 
REGULATOR

GAS 
CONTROL 
OUTLET

SECOND AUTOMATIC
VALVE DIAPHRAGM  

FIRST AUTOMATIC VALVE

NOTE:  SECOND AUTOMATIC VALVE OPERATOR AND 
SERVO PRESSURE REGULATOR SHOWN OUTSIDE 
GAS CONTROL FOR EASE IN TRACING GAS FLOW.

SLOW-OPENING GAS CONTROL HAS A GAS FLOW RESTRICTOR IN THIS PASSAGE.

M9125

1

1

PILOT 
GAS 
OUTLET

Содержание TRADELINE VR8204A

Страница 1: ...supply is interrupted Two position gas control knob has ON and OFF posi tions All adjustments and wiring connections are accessible from top of the control Compact size Straight throughbodypattern rightangleadaptersavail able for inlet and outlet 1 2 in inlet and 1 2 in outlet adapters available for 3 8 or 3 4 in Adjustable servo regulator effectively maintains almost constant gas output pressure ...

Страница 2: ...dling and maximum replacement value TRADELINE model specifications are the same as those of standard models except as noted below TRADELINE MODEL AVAILABLE VR8204A Dual Automatic Combination Gas Control for Intermittent Pilot Systems Models for natural or LP gas TABLE 1 MODEL SPECIFICATIONS Model No Opening Charac Type Standard Factory Regulator Settings Optional Factory Regulator Settings Range o...

Страница 3: ...G Can be mounted 0 to 90 degrees in any direction including vertically from the upright position of the gas control knob TEMPERATURE RATING VR8204A C H and VR4204H 0 F to 175 F 18 C to 79 C VR8204M P K and VR4204M P 40 F to 175 F 40 C to 79 C DIMENSIONS See Fig 1 APPROVALS AmericanGasAssociationdesigncertificate L2025006 CanadianGasAssociationdesigncertificate L2025006 Australian Gas Association d...

Страница 4: ...MAGE SEVERE INJURY OR DEATH 1 Do not use a gas control set for natural gas on an LP gas system or a gas control set for LP gas on a natural gas system 2 When making conversion main pilot burner orifices must be changed to meet appliance manufacturer specifications Refer to appliance manufacturer instructions for orifice specifications and changeover procedure Gas controls are factory set for natur...

Страница 5: ...inances or with the National Fuel Gas Code ANSI Z223 1 NFPA No 54 whichever applies Tubing installation must com ply with approved standards and practices 1 Use new properly reamed pipe free from chips If tubing is used make sure the ends are square deburred and clean All tubing bends must be smooth and without defor mation 2 Run pipe or tubing to the control If tubing is used obtain a tube to pip...

Страница 6: ...IS USED M3079 Connect Pilot Gas Tubing 1 Cut tubing to desired length and bend as necessary for routing to pilot burner Do not make sharp bends or deform the tubing Do not bend tubing at control after compression nut has been tightened because this may result in gas leakage at the connection 2 Square off and remove burrs from end of tubing 3 Unscrew brass compression fitting from the pilot outlet ...

Страница 7: ...ig 2 5 Adjust thermostat heat anticipator as instructed in the appliance manual i e usually 0 1A for VR4204 0 5A for VR8204 Fig 8 Wiring connections for 24 volt control in intermittent ignition system with S8600 MV MV PV PV GND BURNER 24V GND 24V SPARK S8600 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ALTERNATE LIMIT CONTROLLER LOCATION MAXIMUM WIRE LENGTH 3 ft 9 m CO...

Страница 8: ... main burner in operation paint pipe joints including adapters and control inlet with rich soap and water solution 5 If another leak is detected tighten adapter screws joints and pipe connections 6 Replace part if leak cannot be stopped ADJUST PILOT FLAME The pilot flame should envelop 3 8 to 1 2 in 10 to 13 mm of the tip of the igniter sensor See Fig 10 To adjust pilot flame 1 Remove pilot adjust...

Страница 9: ...ired outlet pressure or flow rate cannot be achieved to adjusting the gas control check gas control inlet pressure using a manometer at the gas control inlet pressure tap If inlet pressure is in the nominal range see Table 4A or 4B replace gas control Otherwise take the necessary steps to provide proper gas pressure on the control Slow opening and Step opening Pressure Regulators 1 Check the full ...

Страница 10: ...stem should be replaced if It does not perform properly on checkout or trouble shooting The gas control knob is hard to turn The gas control is likely to have operated for more than 200 000 cycles Operation The VR8204 VR4204 gas controls provide ON OFF manual control of gas flow In the OFF position gas flow to both pilot and main burners is mechanically blocked In the ON position gas flows to the ...

Страница 11: ...servo pressure regulator pro vides close control of outlet pressure even if inlet pressure and flow rate vary widely Any outlet pressure change is immediately reflected back to the pressure regulator dia phragm which repositions to change the flow rate through the regulator valve and thus through the automatic valve If outlet pressure begins to rise the pressure regulator diaphragm moves slightly ...

Страница 12: ...outlet pressure as described for the standard regulator The step model requires approximately 60 seconds to reset once the main burner goes off If it is re energized within 60 seconds it may bypass or shorten the length of the low pressure step The burner may relight at the full flow rate WHEN THE CALL FOR HEAT ENDS When the call for heat ends the first automatic valve and the second automatic val...

Страница 13: ...at the gas control knob is in the ON position 2 Adjust thermostat several degrees above room tem perature 3 Using ac voltmeter check for voltage at gas control If pilot lights measure across MV PV and MV If pilot does not light measure across MV PV and PV before safety lockout occurs 4 If voltage is incorrect or not present check control circuit for proper operation 5 If voltage is present replace...

Страница 14: ...l application but the specific controls used and the procedures outlined by the manufac turer of your appliance may differ requiring special instructions TO TURN ON FURNACE STOP Read the safety information above 1 The lighting sequence on this appliance is automatic do not attempt to manually light the pilot 2 If the furnace does not come on when the thermostat is set several degrees above room te...

Страница 15: ...15 68 0047 2 ...

Страница 16: ...d 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 Printed in U S A ...

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