Type 36C67 - climate.emerson.com

1 Printed in NO. 37-5838 BReplaces 37-5838A0024 WHITE-RODGERSCONTENTSD escription .. 1 Specifications .. 1 Precautions .. 2 installation .. 3 Main Piping ConnectionPilot Gas ConnectionThermocouple ConnectionSystem WiringEnergy Cut Off ( ) ConnectionAdjustment .. 4 Pilot Gas AdjustmentPilot Lighting Instructions and Precautions .. 5 WHITE-RODGERS DIVISIONEMERSON ELECTRIC REAVIS ROADST. LOUIS, MISSOURI 63123-5398 Operator: Save these instructions for future use!FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFOREINSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURYAND/OR PROPERTY 36C67 complete gas control combines into a singlecompact package the functions of 3-position Gas Cock,pressure regulator, 100% shut-off automatio pilot, mainoperator and Natural-LP Gas Circuit Current (24 V Model) AmpsPilot Gas Outlet:Located at outlet end of the valveType of Gas:Suitable for all domestic heating gasesPressure Rating:1 2 PSIA mbient Temperature:-40 to 175 FThermocouple:Use W-R Type HO6 SPECIFICATIONSPIPE SIZES/CAPACITIESPipe Size(inches)Capacity (BTU/hr) at1" pressure drop across valve1/2" x 3/8"1/2" x 1/2"1/2" x 3/4"3/4" x 3/4"100,000230,000230,000280,000162,0003 72,600372,600453,600 Nat.

2 Gas(1000 BTU/cu. ft.,64 Sp. Gr.)LP Gas(2500 BTU/cu. ft., Sp. Gr.) INLET BOSSUP OR DOWN UPRIGHT LEFT OR RIGHTU pright, 90 from upright or verticalNOTE: Control shown may not be identicalto replacement INSTRUCTIONSType 36C67 Combination Gas Valve(24 Volt Models)OFFPILOTON2 MAIN PIPING CONNECTIONSAll piping must comply with local codes, ordinances,and/or national fuel gas Turn off electrical power to the system at the fuse boxor circuit breaker. Also turn off the main gas If replacing an existing valve, disconnect all plumbingand electrical connections from the old The valve may be installed in any position exceptupside down. The arrow on the bottom plate indi-cates the direction of gas flow through the You should use new pipe that is properly chamfered,reamed, and free of burrs and chips.

3 If you are usingold pipe, be sure it is clean and free of rust, scale,burrs, chips, and old pipe joint NOT BEGIN installation UNTIL YOU READTHE FOLLOWING Failure to turn off electric or main gas supplyto heating system could cause personal in-jury and/or property damage by shock, gassuffocation, fire, and/or Do not use this control on circuits exceedingspecified voltage. Higher voltage will dam-age the control and may cause shock or NEVER USE FLAME OR ANY KIND OF SPARKTO CHECK FOR GAS LEAKS COULD CAUSEFIRE AND/OR DO NOT USE WIRE JUMPER on pilot sys-tems, such as standing pilot, proven pilot, orspark-to-pilot ignition a fire and/or explo-sion may Do not use a control set for natural gas withLP gas, or a control set for LP gas withnatural gas. Personal injury and/or propertydamage, gas suffocation, fire, and/or explo-sion may Do not short out terminals on gas valve orprimary control to test.

4 Short or incorrectwiring can cause equipment damage, prop-erty damage, and/or personal This control is not intended for use in loca-tions where it may come in direct contactwith water. Suitable protection must be pro-vided to shield the control from exposure towater (dripping, spraying, rain, etc.).WARNING!If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury or loss of !NOTE5. Apply pipe joint compound (pipe dope) or teflon tapethat is approved for all gases, only to the malethreads of the pipe joints. DO NOT apply com-pound or teflon tape to the first two threads (see fig. 2for typical piping connections).6. If you are using a vise or open-end wrench to hold thevalve while installing piping, do not tighten exces-sively, as this may damage the See SYSTEM WIRING when making electrical con-nections.

5 After all gas and electrical connections arecompleted, turn gas on and check for gas leaks withleak detection solution or soap suds. Bubbles formingindicate a leak. SHUT OFF GAS AND FIX ALLLEAKS (cont)HorizontalDropPiped GasSupplyGas Valve3 ValveRiserPiped GasSupply3 ValveTubing GasSupply3 : Always IncludeA Drip Leg In PipingFigure 2. Typical gas valve pipingSYSTEM WIRINGREFER TO AND FOLLOW THE APPLIANCEMANUFACTURER S WIRING DIAGRAM. REFER TOFIG. 4 FOR TERMINAL wiring should be installed in accordance with local andnational electrical codes and check that the electrical power supply used agreeswith the voltage and frequency shown on the gas CUT OFF ( )CONNECTIONA five-function valve uses the 2 terminals that areconnected to the magnetic assembly where the thermo-couple connects to the 36C valve line interrupter.

6 Device is mounted in furnace near the limit controland a lead assembly is connected to the terminalson the 36C GasOutletGas Outlet PRESS TAP PILOTF igure 3. Gas valve side viewNOTELineHighlimit24 VACHotTHTH-TRTRT hermostatTransformerGas ValveTerminal PanelFigure 4. Wiring diagramPILOT GAS CONNECTIONI nstall fitting into pilot gas outlet (see fig. 3), turning untilfinger-tight. Insert clean, deburred tubing all the waythrough the fitting. While holding the tubing securely,slowly tighten fitting until you feel a slight give . Tightenthe fitting an additional 11 2 TERMINALSF igure 5. Wiring for Energy Cut-Off ( ) connectionTHERMOCOUPLE CONNECTIONThe thermocouple connection should be clean to ensuregood electrical the thermocouple nut into the power unit tapping asfar as possible by hand.

7 Then use a small wrench to setthe nut with a 1 4 to 1 2 additional turn. Do not leds from terminals to device onfurnace. Test for continuity. If there is no continu-ity, power unit will not hold the furnace does not have an device, use thejumper provided in the AdjustCover ScrewGasketPilotAdjustScrewFigure 6. Pilot flame adjustmentPILOT GAS ADJUSTMENTIf the pilot flame is low and does not engulf the bulb of themercury flame sensor, the system will not energize themain valve. If pilot gas pressure is too high, gas will sputterpast the ignition electrode, and may not ignite. High pilotgas pressure may also cause the flame to lift off theburner, causing the flame sensor bulb to sense "low" adjust the pilot gas pressure, remove the cover screw(see fig. 6). To REDUCE pilot pressure, turn the pilotadjust screw (beneath the cover screw) clockwise.

8 ToINCREASE pilot pressure, turn the pilot adjust screwcounterclockwise. Replace and tighten cover LIGHTING INSTRUCTIONSAND PRECAUTIONSFOR YOUR SAFETY READ BEFORE LIGHTINGWARNING!If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of This appliance has a pilot that must be lighted by lighting the pilot, follow these instructions LIGHTING, smell all around the appliance areafor gas. Be sure to smell next to the floor because somegas is heavier than air and will settle on the YOUR SAFETY WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance. Do not touch any electrical switch; do not use anyphone in your building. Immediately call you gas supplier from a neighbor sphone. Follow the gas supplier s instructions.

9 If you cannot reach your gas supplier, call the Use only your hand to push in or turn the gas control use tools. If the knob will not push in or turn byhand, don t try to repair it; call a qualified service techni-cian. Force or attempted repair may result in a fire Do not use this appliance if any part has been under call a qualified service technician to inspectthe appliance and to replace any part of the control systemand any gas control that has been under ! Read the precautionary information Set the thermostat to lowest Turn off all electrical power to the Depress gas control knob slightly and turn clockwise toOFF (see fig. 6). If knob is in ON, turn clockwise to PILOT,then depress knob slightly and turn clockwise to : Knob cannot be turned from PILOT to OFF unlessknob is depressed slightly.

10 Do not use tools or Wait five (5) minutes to clear out any gas. If you then smellgas, STOP! Follow B in the precautionary informationabove. If you don t smell gas, go to next Remove the pilot access panel(s) located under the gascontrol Find pilot - follow small metal tubes fromgas Turn knob on gas control counterclockwise to Depress control knob all the way and hold in. Immediatelylight the pilot with a match. Continue to hold the controlknob down for about one (1) minute after the pilot is knob and it will pop back up. Pilot should remainlit. If it goes out, repeat steps 4, 5, 8, and 9. If knob does not pop up when released, turn clockwise toOFF, stop and immediately call your service technician orgas supplier. If the pilot will not stay lit after several tries, turn the gascontrol knob to OFF and call your service technician or Replace pilot access panel(s).