White Rodgers 36C94-303 User's Manual
Contents
1. www white rodgers com www emersonclimate com rS EMERSON2. 36C D E F G H J valves Regulation range 7 0 to 12 0 W C PRECAUTIONS DO NOT BEGIN INSTALLATION UNTIL YOU READ THE FOLLOWING PRECAUTIONS PRINT IN ey Me If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life Failure to turn off electric or main gas supply to heating system could cause personal injury and or property damage by shock gas suffocation fire and or explosion Do not use this control on circuits exceeding specified voltage Higher voltage will damage the control and may cause shock or fire hazard NEVER USE FLAME OR ANY KIND OF SPARK TO CHECK FOR GAS LEAKS COULD CAUSE FIRE AND OR EXPLOSION Do not use a control set for natural gas with LP gas or a control set for LP gas with natural gas Personal injury and or property damage gas suffocation fire and or explosion may result EMERSON Climate Technologie www white rodgers com www emersonclimate com PART NO 37 7086B Replaces 37 7086A 1024 PRECAUTIONS Do not short out terminals on gas valve or primary control to test Short or incorrect wiring can cause equipment damage property damage and or personal injury This control is not intended for use in locations where it may come in direct contact with water Suitable protection must be provided to shield the control from exposure to water dripping spraying rain etc A WARNING Befo
3. USTED PRESSURE ADJUSTING INLET 3 89 SCREW IS BENEATH A 2 THE BARBED le are NPT REF HOSE FITTING PRESSURE TAP 46 z OUTLET gt INLET 1 2 14 N P T oF eno Ne 2 9 THDS WITH SCREEN T j FF s _108 O PILOT GAS OUTLET CONNECTION ON s F Y FOR 1 4 O D TUBE S __ 15 a X 3 16 l ii PILOT ADJUSTING 58 EE E OUTLET 3 4 14 N P T COVER SCREW TERMINAL 4 00 La 1 44 gt THDS WITH SCREEN ber ADAPTER Figure 5 Gas Valve Top 4 53 Figure 6 Gas Valve Side Figure 7 Gas Valve Outlet Side LIGHTING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE OPERATING A WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life This appliance is equipped with an intermittent ignition device which automatically lights the appliance Do not try to light the pilot by hand BEFORE OPERATING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor FOR YOUR SAFETY WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance e Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department C Do not use this ap
4. White y Rodgers 36C94 303 Delay Opening Combination Gas Valve INSTALLATION INSTRUCTIONS FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND OR PROPERTY DAMAGE 36C94 303 is a direct replacement for 36C 94 302 36E93 301 36E93 302 36E93 303 and 36E93 304 The 36C94 303 com bination gas valve is designed for intermittent ignition system applications The valve is equipped with a redundant solenoid Type of Gas Natural gas LP gas use conversion kit Pressure Regulator Adjustment Range Nat Gas 2 5 to 5 0 W C L P Gas 7 0 to 12 W C Pipe Size Inlet 1 2 NPT Outlet 3 4 NPT Capacity 1 pressure drop across valve 230 000 BTU HR of 0 64 SP GR 1 000 BTU CU FT gas Ambient Temperature 40 to 175 F 40 to 79 C Pressure Rating 14 W C 1 2 PSI max Electrical Rating 24 VAC 60 Hz 0 6A DESCRIPTION valve that controls gas flow to the pilot and main burners a main valve that controls gas flow to the main burner a pressure regula tor to maintain a constant outlet pressure integral gas pressure switch and a two position on off switch for electrical shutoff SPECIFICATIONS Parts and Accessories F92 0656 LP to Natural Gas Conversion Kit for use on Single Stage 36C D E F G H J valves Regulation range 2 5 to 5 0 W C F92 0659 Natural to Regulated LP Gas conversion Kit for use on Single Stage
5. nd the limits that it can easily be adjusted Inlet Outlet pressure test ports are 1 8 NPT see Fig 7 For testing pressure the outlet pressure tap plug will need to be removed and a separate hose fitting installed After testing pres sure with a manometer remove hose fitting and re install plug Tighten to 60 in lb max 1 Attach the manometer to the outlet pressure tap of the valve 2 Energize system to ignite main burner 3 Remove barbed hose fitting 4 To DECREASE outlet pressure turn the adjusting screw beneath the barbed hose fitting counterclockwise To INCREASE ouilet pressure turn the adjusting screw clockwise 5 Replace the barbed hose fitting Cycle the valve two or three times to verify regulator setting Pilot Gas Adjustment This control was factory preset and will not normally require additional adjustment of pilot flame If the pilot flame requires adjustment remove the pilot adjusting cover screw and gasket see Fig 5 To REDUCE pilot flame turn the pilot adjust screw beneath the cover screw clockwise To INCREASE pilot flame turn the pilot adjust screw counter clockwise Replace gasket and tighten cover screw 4 00 R SWING RADIUS BARBED HOSE FITTING MUST BE REINSTALLED IF REGULATOR ta IS READJ
6. pliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water OPERATING INSTRUCTIONS STOP Read the safety information above on this page Set the thermostat to lowest setting Turn off all electric power to the appliance This appliance is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand Remove control access panel Push On Off switch to OFF Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above If you don t smell gas go to the next step Push On Off switch to ON Replace control access panel Turn on all electric power to the appliance Set thermostat to desired setting If the appliance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier TO TURN OFF GAS TO APPLIANCE Set the thermostat to lowest setting Turn off all electric power to the appliance if service is to be performed 3 Remove control access panel 4 Push On Off switch to OFF 5 Replace control access panel White y White Rodgers is a division of Emerson Electric Co The Emerson logo is a trademark and service mark of Emerson Electric Co Rodgers
7. re beginning any modification be sure ALL electrical disconnects are in the OFF position TAG THE DISCON NECT SWITCHES WITH A SUITABLE WARNING LABEL Electrical shock can cause personal injury or death INSTALLATION 1 Shut off power to the unit and install Lock Out tag on all 8 Install gas valve by holding inlet boss with adjustable disconnects and breakers wrench Do not tighten excessively as this may damage 2 T inot main dae supply line valve the valve Torque 375 in lb maximum Do not cross i g PPly thread during installation as this may damage the valve 3 Mark all wires going to the old valve with the terminal description that they are attached to 9 Ifthe original gas valve has a barbed hose fitting install pressure tube on barbed hose fitting of the replacement 4 If replacing an existing valve disconnect all plumbing and valve Ensure that the pressure tube will not kink electrical connections trom the old control 10 Do not remove barbed hose fitting from replacement valve 5 The control may be installed in any orientation except even if the original valve does not have it upside down see figure 1 The arrow on the valve indi cates the direction of gas flow through the control 11 Some applications will require modification of the pilot tube 12 See SYSTEM WIRING when making electrical connections Connect wires per Fig 3 Diagram and Fig 4 Chart 6 You should use new pipe that is properly chamfe
8. red reamed and free of burrs and chips If you are using old pipe be sure it is clean and free of rust scale burrs chips and old pipe joint compound 13 After installation is complete check the operation of the unit and with main burners firing check all joints for leaks using a soap and water solution Retighten all joints where bubbles appear DO NOT USE OPEN FLAME TO CHECK FOR LEAKS 7 Apply pipe joint compound pipe dope that is approved for all gases only to the male threads of the pipe joints DO NOT apply compound to the first two threads see figure 2 for typical piping connections Drop Horizontal iy s Upright 90 from upright or vertical O l NLET BOSS UPRIGHT UP OR DOWN ae I LEFTORRIGHT I NOTE Riser 4 ft I I Always Include Sin 1 dO I A Drip Leg In Piping minimum I I l E l La Tubing Gas 1 da a iE Supply l I Horizontal _ l l l l NOTE Control shown may not be identical to replacement control Figure 1 Mounting positions Gas Valve 3 in minimum i Piped Gas l Piped Gas Supply Supply Figure 2 Typical Gas Valve Piping SYSTEM WIRING REFERTO AND FOLLOW THE APPLIANCE MANUFACTUR ER S WIRING DIAGRAM REFER TO FIG 3 FOR TERMINAL IDENTIFICATION NOTE All wiring should be installed in accordance with local and na tional electrical codes and ordinances Always check that the electrical power supply used agrees wi
9. th the voltage and frequency shown on the gas control ON OFF SWITCH i 36C c TA MAIN See ere PILOT FLAME 1 REDUNDANT ISWITCH WTC mH PRESSURE SWITCH oy ELECTRICAL SCHEMATIC 36C94 303 VALVE WIRING Figure 3 Valve Wiring l Q 0 ii 36E93 36CC94 Terminal Panel Terminal Panel 36E93 301 36E93 302 36E93 303 Description Term and Size 36C94 303 36E93 304 36C94 302 Old Terminals New Terminals Pilot 5 Redundant 1 4 Male Spade 3 Coil 1 Main Coil 1 4 Male Spade 1 Brese te 1 4 Male Spade 4 Switch with 1 4 x 3 16 4 adapter installed F Common 1 4 Male Spade 2 Figure 4 Terminal Connection Old New INSTALLATION Pilot Gas Connection Install fitting into pilot gas outlet see Fig 7 turning until finger tight Insert clean deburred tubing all the way through the fitting While holding the tubing securely slowly tighten fitting until you feel a slight give Tighten the fitting an additional 1 1 2 turns Conversion from Natural to L P Gas Refer to conver sion kit installation instructions Outlet Pressure Adjustment This control is shipped from the factory with the regulator set to 3 5 W C Natural gas full flow If required the regulator can be adjusted for outlet pressures normally ranging from 2 5 to 5 W C natural gas or 7 5 to 12 W C L P gas Do not force the adjusting screw beyo
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