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Checking the Gas Inlet Pressure The gas inlet pressure can be measured by connecting a test gauge to the connection provided on the gas valve. (Figure 8 - A) Once installation is complete, the gas inlet pressure must be checked. The minimum gas inlet pressure must be as shown in “Technical Data”. After checking the gas inlet pressure, disconnect the test gauge and firmly tighten the screw of the gauge connection, then check for gas leaks. Correct any gas leaks before operating the furnace. Checking the Gas Manifold Pressure The gas manifold pressure can be measured by connecting a test gauge to the connection provided on the gas valve. (Figure 8 - B). The furnace comes set from the factory at the correct manifold gas pressure. After the installation is completed, the gas manifold pressure must be checked both in Hi and Lo input. Turn the control knob to switch the unit from Hi to Lo input. The position of the knob in which this occurs depends on the actual room temperature. The gas manifold pressure must be as shown in “Technical Data”. Differences of plus or minus 0.1 in. w.c. are acceptable. If the Hi or Lo gas manifold pressures are different from the values given in the “Technical Data” or are more than 0.1 in. w.c., shut off the furnace and contact a qualified service technician for correction. For instructions about adjustment of the manifold Hi and Lo pressures, see the "Servicing” section. After checking the gas manifold pressure, disconnect the test gauge and firmly tighten the screw of the gauge connection, then check for gas leaks from it. Correct any gas leaks before operating the furnace. Figure 8 Text Box: A. Test gauge connection for gas inlet pressure B. Test gauge connection for gas manifold pressure C. Nut for Hi pressure adjustment (pressure regulator) D. Screw for Lo pressure adjustment (Hi-Lo operator) E. Electric clamp connection F. Gas supply inlet A B CD F EA. Test gauge connection for gas inlet pressure B. Test gauge connection for gas manifold pressure C. Nut for Hi pressure adjustment (pressure regulator) D. Screw for Lo pressure adjustment (Hi-Lo operator) E. Electric clamp connection F. Gas supply inlet EV2 Hi-Lo Flame Operator Operateur Haute-Basse F M Fan Motor Moteur du Ventilateur M1Overheat ThThermostat de Surchau M2 Fan Thermostat Thermostat de Ventilation M9 Mains Fuse – 5x2Pressostat de Circuit De Co RP8Flame Sensor Electrode de Detection de Flamme RP7 Spark Igniter (n.Electrode D’Allumage S Combustion Blower Motor Moteur du Ventilateur de Combustion SFFlame View Lamp (green lamLampe de Presence de Flamme (Verte SB Lock-Out Lamp (red lamp) Lampe de Verrouillage (Rouge) TR Current Transformer 120-24Transformateur 120-24 V Z1 Reset and Summer – Winter SwRearmement et Bouton Et Z2 Hi-Lo Flame and Fan Speed Switch Bouton Haute-Basse Flamme – Vite Z3 Manual – Program Mode Switch Bouton Manuel – Programme’ Z8 Programmable Timer Interrupteur Horaire Z9 Room Thermostat Thermostat D’Ambiance L1 Supply Line – Live Wire Allimentation - Phase L2 Supply Line – Neutral WiAlimentation - Neutre GNDSupply Line – Ground Wire Alimentation - Masse ad carefully all warnings and sa FOR YOUR SAFETY READ BEFORE OPERATING A.This appliance does not have a pilot which mustFollow the gas supplier's instructions. be lighted by means of the piezo igniter installed- If you cannot reach your gas supplier, call the fireon the furnace. Do not try to light the pilot bydepartment. hand. C.Use only your hand to push in or turn the gas control B.BEFORE LIGHTING, smell all around theknob. Never use tools. If the knob will not push in orappliance area for gas. Be sure to smell nextturn by hand, do not try to repair it, call a qualifiedto the floor because some gas is heavier thanservice technician. Force or attempted repair may resultair and will settle on the floor.in a fire or explosion. WHAT TO DO IF YOU SMELL GAS:D.Do not use this appliance if any part has been under- Do not try to light any appliancewater. Immediately call a qualified service technician- Do not touch any electric switchto inspect the appliance and to replace any part of the- Do not use any phone in your buildingcontrol system and any gas control which has been- Immediately call your gas supplier from aunder water. neighbor's phone. OPERATING INSTRUCTIONS 1. 2. completely. Do not force. 3.Turn off all electric power to appliance. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.If the appliance will not operate, follow the instructions below "To Turn Off Gas Of Appliance" and call your 14. 15. the switch back to the WINTER position (button up). The appliance will attempt to relight afterapproximately 40 seconds. During these 40 seconds the red lamp will be lit. If the second attempt isSTOP! Read the safety information above on this label. Set the thermostat to the lowest setting by turning it counterclockwiseThis appliance is equipped with an ignition device that automatically lights theburner. Do not try to light the burner by hand. Turn off gas supply t...

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