Vermont Casting 3340 Injector Orifice Size Matrix, Air Shutter Adjustment, Input BTU/h, 20004409

Radiance Natural Vent Gas Heater

12.Insert blue painted screw when converting to natural gas and red painted screw when converting to LP.

13.Tighten screw (do not over tighten), replace cap.

14.Locate pilot. (Fig. 38)

15.Replace pilot orifice.

•Remove pilot hood by lifting up. (Fig. 41) NOTE: It is not necessary to remove the pilot tube for conver- sion.

Pilot Hood

Pilot

Bracket

CO105a

Fig. 41 Remove pilot hood.

•Remove pilot orifice with allen wrench. (Fig. 42)

•Install the conversion orifice.

•Reinstall pilot hood. Be sure to align hood with index tab.

Index Tab	Allen Wrench
Snap Ring
CO106a

Fig. 42 Remove pilot orifice.

16.Air shutter adjustment. The unit is shipped from the factory with the air shutter open 1”. For LP units only, the air shutter could be closed further. Refer to Table 3 for minimum air shutter opening. The air shutter is located on the bottom of the burner to the left. (Fig.

43)

17.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. 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.

NOTE: It is very critical to keep the left burner leg, which holds the injectors, at a 90° angle to the base. (Fig. 39) This keeps the orifices aligned with the tubes inside burner. Failure to do so could affect the flame appearance and performance of the unit.

18.Place conversion label on valve.

19.Reinstall the right and left log bracket assembly. 20.Reinstall the rear log bracket.

21.Replace logs.

22.Replace glass and stove front. Conversion is complete.

Refer to Table 2 Bottom of Burner Pan

ST667

Fig. 43 Adjust air shutter on bottom of heater, Refer to Table 2 for correct position.

Table 2. Injector Orifice Size Matrix

		Conversion to Natural Gas						Input (BTU/h)
Kit #	Front		Part #	Rear		Part #		Minimum	Maximum
000-5009	#51		30000449	#40	20004263		25,000		35,000
			Conversion to LP					Input (BTU/h)
Kit #	Front		Part #	Rear		Part #		Minimum	Maximum
000-5010	#57		20004587	#54		20000130		27,500	35,000

Table 3. Air Shutter Adjustment

Model

RNVOD

Natural Gas	LP
1¹⁄₂”	Fully Closed

Minimum rear injector air inlet openings.

20 20004409