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Vermont Castings Radiance Vent-Free Gas Heater
20004555
Glass & Catalyst Installation
CAUTION: Air shutter must be removed
when installing glass and catalyst for
proper operation.
1. Remove left and right log bracket assembly by
unfastening the two screws which hold the burner in
place. Loosen the screw on the rear log bracket and
remove the bracket.
2. Hold the burner at the right hand side and lift to clear
the right burner leg. Then pull to the right to clear the
injectors on the left hand side.
3. Turn burner upside down and remove air shutter.
Discard air shutter. (Fig. 18)
OFF
ON
Therm
opile
Black
Black
TP/TH
TP
TH
Thermostat
(Optional)
Thermopile
Black
Black
TP/TH
TP
TH
On/Off Switch Wiring
Optional Thermostat Wiring
ST124b
ST124c
90¡
Left Burner Leg
Injector Orifices
ST353a
Fig. 19 Be sure injector orifices remain at 90° to the base.
4. Replace burner. Slide the burner in at an angle with
left side lower than the right side. Slide the left side
onto the injectors, making sure the burner leg remains
at a 90° angle to the base. (Fig. 19) Lower the right
hand side down in to place. Make sure the burner is as
far left as possible and the injector shoulders are inside
the burner.
5. Replace left and right log bracket assembly, tighten
rear log bracket, and replace logs.
6. Latches provided in catalyst kit must be installed on
top of firebox. Use two phillips screws to secure in
place. (Fig. 20)
7. Slide catalyst between top plate and firebox. Allow
catalyst to “fall” into hole on top of firebox. Secure with
two screws as shown in Figure 21.
Phillips
Screws
Phillips Screws
ST671
Fig. 20 Attach glass latches.
Catalyst Location
Air Shutter (Remove and Discard)
Bottom of Burner Pan
ST667
Fig. 18 Remove air shutter and discard.
ST201
Fig. 21 Install catalytic combustor.