Cleaning Pilot Orifice After use, cleaning of the pilot burner may be required for the proper flame. Also, cleaning of the pilot burner may be required due to spiders (spider webs). The pilot orifice can be cleaned with high pressure air or by placing under running water. Pilot orifice must be dry before replacement. Use a pipe cleaner to clean inside the pilot after the pilot orifice has been removed. Cleaning Combustion Chamber When the main burner and vent cap are removed, all internal areas of the combustion chamber are accessible for cleaning with a vacuum hose. TROUBLESHOOTING 1. Lit match goes out as it enters lighter port. a. Certain wind conditions will blow out match. Ignite match, and as it flares, thrust match through opening. b. Open nearby door or window and relight pilot. 2. Pilot flames but goes out when knob is released. a. See Lighting Instructions. Relight Pilot. b. Relight the pilot and hold knob down longer and harder. Close lighter hole cover just after igniting. Check for a good pilot flame. c. Defective thermopile or defective magnet in safety section of valve. Replace. 3. Yellow pilot flame a. Obstruction at pilot orifice. b. Clean pilot orifice. 4. Pilot and main burner go out during normal operation. a. Check millivolts. b. Check for proper size of pilot flame. c. Check for defective or weak thermopile. d. Check input, reduce as needed. e. Cover on pilot lighter hole must be air tight. f. Check for tight fit of air and flue tubes at both ends of vent assembly. No obstruction around vent that would prevent the wind from hitting all of the vent equally. 5. Thermostat does not turn the main burner on. a. Check wiring. b. Check all millivolt readings. c. Check for spider in main burner orifice. 6. Yellow main burner flame soot on the vent cap. a. See Page 12, "Primary Air Adjustment". b. Remove main burner to check for obstructions in throat and ports. c. Install new main burner orifice and pilot orifice. Refer to Parts List, page 14. 7. On Propane gas, if a whistling noise (resonation) occurs. a. See Page 12, "Primary Air Adjustment". b. Reduce manifold pressure. c. Size main burner orifice with a drill bit. For DV-25 use #54 drill bit. For DV-35 use #50 drill bit. 12434-8-0806 Page 13 HOW TO ORDER REPAIR PARTS Parts can be ordered only through your service person or dealer. For best results, the service person or dealer should order parts through the distributor. Parts can be shipped directly to the service person/dealer. All parts listed in the Parts List have a Part Number. When ordering parts, first obtain the Model Number from the name plate on your equipment. Then determine the Part Number (not the Index Number) and the Description of each part from the following appropriate illustration and list. Be sure to give all this information. Furnace Model Number Part Description Furnace Serial Number Part Number Type of Gas (Propane or Natural) Do not order bolts, screws, washers or nuts. They are standard hardware items and can be purchased at any local hardware store. Shipments contingent upon strikes, fires and all causes beyond our control. Empire Comfort Systems, Inc. Nine Eighteen Freeburg Ave. Belleville, IL 62222-0529 PARTS LIST PLEASE NOTE: When ordering parts, it is very important that part number and description of part coincide. Index Part No. Number Description Index Part No. Number Description 1 DV-769 2 DV-131 3 DV-548 4 DV-524 5 DV-757 6 DV-899 7 DV-900 8 DV-762 & DV-763 9 DV-951 10 DV-901 11 DV-902 11 15665 12 RH-705 13 712036 14 DV-903 14 DV-904 15 712098 16 DV-781 17 DV-064 18 DV-988 18 DV-990 19 672063 20 DV-1004 21 RH-238 22 DV-778 23 712051 Vent Cap Outside Mounting Plate Air Inlet Tube Flue Outlet Tube Vent Kit Wall Mounting Bracket Inlet Air Drop Chute Gasket - Air Drop Chute (2 Each Required) Casing Top Heat Shield Inner Casing (US version) Inner Casing (Canada version) Casing Side (2 Required) Gasket - Flue Outlet Support Combustion Chamber (DV-25) Combustion Chamber (DV-35) Gasket - Lighting Hole Lighting Hole Cover Assembly with Clear Mica Cover Plate Burner (DV-25) Burner (DV-35) Thermopile Pilot Tubing w/Ferrells Burner Door Gasket - Burner Door Gasket - Pilot Burner 24 25 25 26 27 28 28 28 28 29 30 31 31 32 33 34 35 Not Shown Not Shown Not Shown Not Shown Not Shown Not Shown Not Shown Not Shown Not Shown DV-994 R-2224 R-2223 DV-772 DV-913 742155 742238 P-86-38 742233 P-190 R-191 R-5600 R-5601 DV-1003 DV-764 & DV-765 DV-908 R-2313 742158 742266 662021 DV-885 922113 922217 652121 652211 13298 Pilot Shield Pilot Burner with Orifice (Nat) Pilot Burner with Orifice (LP) Electrode and Wire Casing Front Burner Orifice, (DV-25 Nat) Burner Orifice, (DV-25 LP) Burner Orifice, (DV-35 Nat) Burner Orifice, (DV-35 LP) Manifold Manifold Union Assembly Gas Valve (Nat) 7000 MVRLC Gas Valve (LP) 7000 MVRLC Valve Bracket Gasket - Chamber Support (2 Each Required) Valve Shield Piezo Ignitor Pilot Orifice (Nat) Pilot Orifice (LP) Wall Thermostat - Millivolt Hardware Package ...