Page 2 - TABLE OF CONTENTS; PILOT WILL NOT STAY LIGHT; Sherwood
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 b...
Page 5 - B) PIEZO IGNITOR OK BUT PILOT WILL STILL NOT LIGHT
B) PIEZO IGNITOR OK BUT PILOT WILL STILL NOT LIGHT Make sure all gas lines have been connected with no leaks. Make sure that the gas is “ON” (NG) Natural gas and (LP) Propane tanks are full. Make sure the appliance service valve is in the “ON” position. SEE PAGE 4 FIGURE 3. Test to make sure there i...
Page 6 - To remove pilot injector; Sherwood Industries Ltd.
EXPLODED VIEW S.I.T PILOT ASSEMBLY 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 t...
Page 7 - SUPPLY PRESSURES
3.5” wc BELOW 0 3.5” wc ABOVE 0 INLET GAS PRESSURE 7” wc (NG) NATURAL GAS 1.75” wc BELOW 0 1.75” wc ABOVE 0 OUTLET GAS PRESSURE 3.5 “ wc (NG) NATURAL GAS NO PRESSURE 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 DO...
Page 12 - MAIN BURNERS WILL NOT LIGHT CON’T.
MAIN BURNERS WILL NOT LIGHT CON’T. Bypass spill switch with a jumper wire as shown. If the unit starts, replace the spill switch. DO NOT LEAVE BY PASSED IN. Check spill switch operation on B-vented models only SEE PAGE 10 FIGURE 9. Check the “ON-OFF” switch and thermostat for proper operation. Use a...
Page 20 - B) DIRECT VENT MODELS
B) DIRECT VENT MODELS Check air shutter on the burner tube (venturi). Adjust air shutter. Close until flame sits onto the burner ports. Seal exhaust tube with high temperature silicone. Also make sure that combustion air pipe is sealed. Make sure there are no leaks in the venting system. Make sure t...
Page 21 - ALL MODELS
Check to make sure that the fan is plugged in. 7) BLOWER DIAGNOSIS ALL MODELS Make sure the fan control knob is in the “ON” position. Make sure the two wires are connected to the fan temperature sensor. Make sure that the two wires are connected to the blower. Make sure there are no broken, damaged ...
Page 23 - STEP BY STEP SERVICE INSTRUCTIONS; in
STEP BY STEP SERVICE INSTRUCTIONS These appliances do require to be serviced. Our best recommendation is that the appliance be serviced (1) once a year, maybe just before the heating season starts. Annual service should and inspection should include: ⇒ Open the two side panels or remove the face fra...
Page 24 - CLEANING THE APPLIANCE; Only use a very soft cloth an a non abrasive cleaner,; use any alcohol’s, mineral; DO NOT
⇒ Turn the switch to the “ON” position; check the millivolt readings at the thermopile make sure that the readings meet manufacters specifications. Turn the unit “OFF”. ⇒ Install a manometer on the inlet side of the gas valve marked (E), re light the appliance make sure that the inlet pressure meets...
Page 25 - improper
10) GLOSSARY B-VENTED SYSTEM A venting system using only approved double wall pipe and approved B-vent components. This system also uses room air for proper venting action through the dilution air inlet mounted on the back of the unit. CONTINUITY TEST By using a multimeter set on OHMS, is determined...