background image

13

68-0049—2

VR8205; VR4205

␣␣␣␣␣␣␣␣␣␣␣␣SERVICE

IF MAIN BURNER WILL NOT COME ON WITH
CALL FOR HEAT

1. Confirm that gas control knob is in the ON position.
2. Adjust thermostat several degrees above room tem-

perature.

3. Using ac voltmeter, measure voltage across MV

terminals at gas control.

4. If no voltage is present, check control circuit for

proper operation.

5. If proper control system voltage is present, replace

gas control.

INSTRUCTIONS TO THE HOMEOWNER
FOR YOUR SAFETY, READ BEFORE LIGHTING

WARNING

IF YOU DO NOT FOLLOW THE
WARNINGS BELOW AND THE
LIGHTING INSTRUCTIONS EXACTLY, A
FIRE OR EXPLOSION CAN RESULT
WITH PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE.
1. Before lighting, smell around the appliance

area for gas. If the appliance uses LP (bottled)
gas, be sure to smell next to the floor because
LP gas is heavier than air. If you smell gas,
immediately shut off the manual valve in the
gas piping to the appliance, or on LP, at the
tank
. Do not try to light any appliance. Do not
touch any electrical switch or use the phone.
Leave the building and call your gas supplier.
If your gas supplier cannot be reached, call the
fire department.

2. Do not force the gas control knob on the appli-

ance. Use only your hand to turn the gas con-
trol knob. Never use any tools. If the knob will
not operate by hand, replace the control using a
qualified service technician. Force or attempted
repair can result in fire or explosion.

3. The gas control must be replaced if it has been

flooded with water. Call a qualified service
technician.

4. The gas control is a safety device. It must be

replaced in case of any physical damage such
as bent terminals, missing or broken parts,
stripped threads, or evidence of exposure to
heat.

IMPORTANT: Follow the operating instructions pro-

vided by the manufacturer of your heating appliance.
The information below will be of assistance in a
typical control 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 main burner.

2. If the furnace does not come on when the thermostat

is set several degrees above room temperature, set the
thermostat to the bottom of its range to reset safety control.

3. Remove burner access panel if provided on your

appliance.

4. Turn the gas control knob (Fig. 5) clockwise

to

OFF.

5. Wait five minutes to allow any gas in the combustion

chamber to vent. If you then smell gas in the appliance area
or near the floor in an LP installation, immediately shut off
the manual valve in the gas piping to the appliance, or on
LP, at the tank
. Do not touch any electrical switch or use the
phone.  Leave the building and call your gas supplier. If
your gas supplier cannot be reached, call the fire depart-
ment. Failure to do so may result in fire or explosion.

6.  If you don’t smell gas, turn knob on gas control

counterclockwise

to ON.

7. Replace burner access panel.
8. Reset thermostat to desired temperature.
9. If burner does not come on when room temperature is

below thermostat setting, turn gas control knob to OFF and
contact a qualified service technician for assistance.

TO TURN OFF APPLIANCE

Turn gas control knob clockwise

to OFF.

!

Содержание VR8205

Страница 1: ...tomatic valve opens on thermostat call for heat and closes when call for heat ends Diaphragm operatedsecondautomaticvalveopensunder control of the regulator and closes if gas or power supply is interrupted Two positiongascontrolknobhasONandOFFpositions All adjustments and wiring connections accessible from top of the control Compact size Straight through body pattern right angle adapters available...

Страница 2: ...o provide ease of stocking ease of handling and maximum replacement value TRADELINE model specifications are the same as those of standard models except as noted below TRADELINE MODEL AVAILABLE VR8205A Dual Automatic Combination Gas Control for Direct Ignition Systems Models for natural or LP gas ADDITIONAL FEATURES 3 8 in bushing 3 4in straightflangeassembly withO ringandscrews Tool for flange he...

Страница 3: ...m the upright position of the gas control knob including vertically TEMPERATURE RATING VR8205A C H VR4205H 0 F to 175 F 18 C to 79 C VR8205M P K VR4205M P 40 F to 175 F 40 C to 79 C DIMENSIONS See Fig 1 APPROVALS AmericanGasAssociationdesigncertificate L2025006 CanadianGasAssociationdesigncertificate L2025006 Australian Gas Association design certificate 4214 Approved for Delta C applications ACCE...

Страница 4: ...r 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 natural and manufactured or LP gas Do not attempt to use a control...

Страница 5: ...essive heat To assure proper operation follow these guidelines Locate gas control in a well ventilated area Mount gas control high enough above the cabinet bottom to avoid exposure to flooding or splashing water Assure the ambient temperature does not exceed the ambient temperature ratings for each component Cover gas control if appliance is cleaned with water steam or chemicals or to avoid dust a...

Страница 6: ...ntrol inlet and outlet if neces sary 6 Connect pipe to control inlet and outlet Use wrench on the square ends of the control If an adapter is used place wrench on adapter rather than on control Refer to Figs 5 and 6 TWO IMPERFECT THREADS GAS CONTROL THREAD PIPE THE AMOUNT SHOWN IN TABLE 4 FOR INSERTION INTO GAS CONTROL APPLY A MODERATE AMOUNT OF PIPE COMPOUND TO PIPE ONLY LEAVE TWO END THREADS BAR...

Страница 7: ...ition system Fig 8 Wiring connections for 24 volt control in S87 Direct Ignition System IGNITION MODULE L1 HOT L2 LIMIT CONTROLLER Q347 IGNITER SENSOR 120V GND VALVE VALVE GND POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ALTERNATE LIMIT CONTROLLER LOCATION M3090A BURNER 120V VR4205 DUAL VALVE COMBINATION GAS CONTROL L2 L1 2 1 1 2 WHITE BLUE BLACK BLUE HOT SURFACE IGNIT...

Страница 8: ...inburner is properly adjusted for complete combustion Follow appliance manufacturer instructions 2 IF CHECKING GAS INPUT BY CLOCK ING GAS METER Make certain there is no gas flow through the meter other than to the appliancebeingchecked Otherappliancesmust remain off with their pilots extinguished or their consumption must be deducted from the meter reading Convert flow rate to Btuh as describedinf...

Страница 9: ...aracteristics TABLE 5A PRESSURE REGULATOR SPECIFICATION PRESSURES in wc Model Type Nominal Inlet Factory Set Nominal Outlet Pressure Setting Range Type of Gas Pressure Range Step Full Rate Step Full Rate Standard Natural 5 0 7 0 3 5 3 0 5 0 slow opening LP 12 0 14 0 10 0 8 0 12 0 Step opening Natural 5 0 7 0 0 9 3 5 3 0 5 0 LP 12 0 14 0 2 2 10 0 8 0 12 0 TABLE 5B PRESSURE REGULATOR SPECIFICATION P...

Страница 10: ...tor is de energized closing the channel to the pressure regulator and opening a channel to the under side of the second automatic valve operator valve dia phragm The combination of spring pressure under the second automatic valve diaphragm and lack of outlet pres sure holds the diaphragm firmly closed Gas flow to the main burner is blocked by both valves Regular preventive maintenance is important...

Страница 11: ...gmoregasflowto the gas control outlet This decreases gas pressure under the second automatic valve diaphragm and repositions the valve disc further from the seat Thus flow of gas through the second automatic valve is increased and outlet pressure rises to the desired level Fig 10 Position of gas control components during thermostat off cycle Slow Opening Regulation Slow opening gas controls functi...

Страница 12: ...ressurecloses the second automatic valve to provide a second barrier to gas flow Fig 11 Position of gas control components during burner on cycle 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...

Страница 13: ...e It must be replaced in case of any physical damage such as bent terminals missing or broken parts stripped threads or evidence of exposure to heat IMPORTANT Follow the operating instructions pro vided by the manufacturer of your heating appliance The information below will be of assistance in a typical control application but the specific controls used and the procedures outlined by the manufac ...

Отзывы: