Assessments - 4, GPA: 4
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All rights reserved. Text Box: FOR INSTALLERS AND SERVICE TECHNICIANS ONLY Text Box: August 2003 C-10100 Text Box: Sherwood Industries Ltd. ENVIRO 2003 Flowchart: Alternate Process: SUGGESTED TOOLS LIST FOR SERVICING GAS LEAK DETECTOR MANOMETER MULTIMETER CORDLESS DRILL WIRE STRIPPER/CRIMPER WRENCHES, STANDARD AND METRIC SCREWDRIVERS (TORX T20) METAL SNIPS JUMPER WIRES NUMBERED DRILLS ((DMS)) Flowchart: Alternate Process: TABLE OF CONTENTS PAGE 1) PILOT WILL NOT STAY LIGHT A) IGNITION SYSTEM………………………………………………………. 1 B) IGNITION SYSTEM OK BUT PILOT WILL NOT LIGHT……………... 3 2) PILOT WILL NOT STAY LIT……………………………………………………… 7 3) MAIN BURNERS WILL NOT LIGHT…………………………………………….. 9 4) MAIN BURNERS WILL NOT STAY LIT…………………………………………. 11 5) SOOTING (ALL MODELS)…………………………………………………….…. 15 6) FLAME LIFTING A) B-VENTED………………………………………………………………... 17 B) DIRECT VENTED………………………………………………………... 18 7) BLOWER OPERATION ………………………………………………………….. 19 8) ORIFICE SIZING CHART………………………………………………………… 20 9) STEP BY STEP SERVICE INSTRUCTIONS…………………………………… 21 10) GLOSSARY………………………………………………………………………. 23 Flowchart: Alternate Process: This is a service guide designed by SHERWOOD INDUSTRIES LTD. We hope this manual will assist you to identify and correct operational concerns you might experience in all ENVIROGAS appliances. This service guide is designed for TRAINED SERVICE TECHNICIANS AND INSTALLERS. This guide is NOT to be used by the homeowner. If after reading this guide and following our recommendations and the problem still excists, please do-not hesitate to call our technical department. Technical Division SHERWOOD INDUSTRIES LTD. Text Box: Sherwood Industries Ltd. ENVIRO PAGE 1 Flowchart: Alternate Process: IF IT FAILS, replace piezo ignitor. Flowchart: Alternate Process: Retighten hex nut on back of the ignitor and make sure bracket is secure on the valve. Flowchart: Alternate Process: Replace electrode. Flowchart: Alternate Process: IF IT DOES, replace electrode. Flowchart: Alternate Process: Replace with only manufactures parts Flowchart: Alternate Process: Make sure piezo ignitor is working properly. Place a screwdriver next to ignitor, and press ignitor. If it sparks, OK. Flowchart: Alternate Process: Make sure that wires are not broken, frayed and that all connections are tight at both the piezo ignitor and electrode. Flowchart: Alternate Process: Make sure that ceramic on the electrode is not broken. Carefully try to spin the porcelain. Flowchart: Alternate Process: Make sure a 1/8” (3.175mm) gap is maintained between electrode and pilot hood. SEE PAGE 2 FIGURE 1. Flowchart: Alternate Process: Make sure the piezo ignitor is not loose. Flowchart: Terminator: A) IGNITION SYSTEM Flowchart: Decision: 1(PILOT WILL NOT LIGHT NO SPARK Text Box: 3.175mm Text Box: Sherwood Industries Ltd. ENVIRO PAGE 2 Text Box: Sherwood Industries Ltd. ENVIRO PAGE 3 Flowchart: Alternate Process: Clean the pilot injector if necessary. Flowchart: Alternate Process: Wait 60 seconds for the safety to reset itself. Flowchart: Alternate Process: Use a match to see if air or gas comes from the pilot assembly. Flowchart: Alternate Process: Turn service valve to the “ON” position. Flowchart: Alternate Process: Correct if necessary. Flowchart: Alternate Process: Correct if necessary, test for gas leaks in an approved manner. Flowchart: Alternate Process: Make sure pilot injector is not clogged. Flowchart: Alternate Process: Make sure that the valve has not reset itself. (All valves have an interlock safety device.) Flowchart: Alternate Process: Test to make sure there is no air in the gas line. SEE PAGE 4 FIGURE 3. Flowchart: Alternate Process: Make sure the appliance service valve is in the “ON” position. SEE PAGE 4 FIGURE 3. Flowchart: Alternate Process: Make sure that the gas is “ON” (NG) Natural gas and (LP) Propane tanks are full. Flowchart: Alternate Process: Make sure all gas lines have been connected with no leaks. Flowchart: Terminator: B) PIEZO IGNITOR OK BUT PILOT WILL STILL NOT LIGHT Text Box: Sherwood Industries Ltd. ENVIRO PAGE 4 Text Box: EXPLODED VIEW S.I.T PILOT ASSEMBLY Text Box: PILOT HEAD THERMOPILE PILOT INJECTOR SPARK ELECTRODE THERMOCOUPLE Text Box: To remove pilot injector: Remove the two screws that hold the pilot assembly to the burner control assembly. Lift the assembly straight up being careful not to damage any components. Using a 10 mm wrench undo the securing nut on pilot tubing and pull tubing down to access injector. Being careful not to damage the ceramic spark electrode. Replace the injector and reinstall the pilot tubing, always to perform a gas leak test before lighting the pilot assembly. The number on the side of the injector will determine the size. This number is in millimeters. Text Box: SUPPLY PRESSURES NATURAL GAS PROPANE GAS 50% TURN DOWN MAX SUPPLY PRESSURE 7” wc 12” wc MIN SUPPLY PRESSURE 5” wc 11.5” wc 33% TURN DOWN MAX SUPPLY PRESSURE 7” wc 13” wc MIN SUPPLY PRESSURE 4.5” wc 10.5” wc Text Box: 3.5” wc BELOW 0 3.5” wc AB...