Évaluations - 3, GPA: 3.7
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I CAUTION! If the gas input to the furnace is too great because of excessive gas pressure, wrong size orifice, high altitude, etc., the burnerflame will be sooty and may produce carbon monoxide, which could result in unsafe operation, explosion, and/ or fire or asphyxiation. A dirt leg may be required by some local cedes to trap moisture and contaminations. 035-16328-002 Rev. C (0902) For natural gas operation, the furnace is designed for 7" W.C. inlet gas pressure. Pressure to main burner is then reduced to 3 1/2" W.C. For Propane gas operation, the furnace is designed for 11" W.C. inlet gas pressure. Pressure to main burner is then reduced to 10" W.C. IMPORTANT -When converting gas valve from or to Propane gas, it will be necessary to change main burner orifice to prevent an underfired or overfired condition. See label inside lower furnace door for complete instructions. Pilot Adjustment On models equipped with standing pilot ignition, the pilot should be adjusted so that the flame is approximately 1" in height (500 BTU / hr.). This will allow proper burner ignition without excessive fuel usage. The pilot adjustment screw is located on the top of the gas valve. Observing Burner Operation 1, Observe burner to make sure it ignites. Observe color of flame. On natural gas the flame will burn blue with appreciably yellow tips. On Propane gas a yellow flame may be expected. If flame is not the proper color call a qualified service technician for service. 2, 3. Let furnace heat until blower cycles on. Turn thermostat down. 4. Observe burner to make sure it shuts off. 5. Let the furnace cool and blower cycle off. kWARNING] Should overheating occur, or the gas supply fail to shut off, shut off the manual gas valve to the furnace and allow bomer to run until furnace cools down and blower shuts off before shutting off the electdcal supply. If any abnormalities are observed when checking for correct operation, such as burner failing to ignite or to turn off, sooty flame, etc., call your nearest authorized service technician as shown in the Service Center List included in the home owner envelope with the furnace. If Furnace Fails to Operate Properly 1. Check setting of thermostat -and position of HEAT/ COOL switch if air conditioning is installed. If a set-back type thermostat is employed be sure that the thermostat is in the correct operating mode. 2. Check to see that electrical power is ON. 3. Check to see that the knob or switch on the gas control valve is in the full ON position. 4. Make sure filters are clean, return gdfies are not obstructed, and supply registers are open. 5. Be sure that furnace flue piping is open and unobstructed. If the cause for the failure to operate is not obvious, do not attempt to service the furnace yourself. Call a qualified service agency or your gas supplier. Unitary Products Group 035-16328-002C(0902) Rev. FINAL PROCEDURE INSTALL FURNACE DOORS Install the lower door first by sliding the bottom of the door down until the tabs on the casing base engage the slots in the bottom door end cap. Then push the top of the lower door in until the door clips snap into place. Install the upper door in a similar manner, first engaging the slots in the top of the upper door on the tabs on the casing top. Then snap the bottom of the upper door into place against the casing. FINISH AND TRIM Alcove and Closet Installations may now be finished and trimmed as necessary. / AUTOMATIC DAMPER FURNACE BASE DUCT CONNECTOR NOTE: FOR BEST AIR DELIVERY INSTALL DAMPER WITH BLADES PARALLEL TO SUPPLY DUCT. FIGURE...
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