Vermont Casting 3033 - Manual (Page 21)

21
Vermont Castings UVS27 Vent-Free Gas Heater
20005004
Catalytic Combustor
The combustor should be cleaned annually to ensure
optimal performance. Follow the procedure below.
Remove the Combustor Module
1. Be sure the heater is COLD.
2. Remove the top grille, screen and top plate. (Fig. 35)
3. Use the phillips screwdriver to remove the two sheet
metal screws and washers that secure the combus-
tor to the top of the firebox. (Fig. 36)
Clean the Combustor Module
1. Clean the outer surface of the filter with the brush
attachment of your vacuum cleaner to remove loose
dirt.
2. Submerge the filter in a mild soapy water solution.
Rinse thoroughly with distilled water.
3. Replace in heater when dry.
Replace The Combustor Module
1. Set combustor on top of flat surface of firebox.
Secure with the two sheet metal screws and wash-
ers.
2. Replace the top plate, screen and grille.
ST114a
Fig. 35 Remove top plate, grille and screen.
ST709a
Fig. 36 Remove the catalytic combustor module.