Vermont Casting SDV30 Injector Orifice Size Matrix, Models 3940, 3950 RF Models Only, All Models

Stardance Direct Vent/Natural Vent Gas Heater

Models 3940, 3950 (RF Models) Only

16.Follow procedure for pilot type 2 to replace pilot orifice.

17.Remove and replace plug on lower right hand side of the valve; Red for LP and Blue for NG. (Page 26, Fig. 49)

18.Remove motor top cap. Depress and turn center plunger until arrow points to correct screw. Red for LP and Blue for NG. NOTE: Plunger will “snap” into NG position when arrow is close to blue screw. It will not “snap” at LP (Red) position. (Fig. 61)

19.Insure manifold pressure remains between 3.2”

-3.5” w.c. for NG and 9,5” - 10” w.c. for LP. To adjust the manifold pressure, for NG, using a torque #10 key turn the blue screw clockwise to increase the manifold pressure. Turn the screw counterclockwise to decrease the pressure. Use the red screw to adjust LP.

20.Replace motor top cap.

		Motor Top Cap
Center
Plunger
		Valve
Blue - NG	Red - LP	LOCAL
		FP1037b

Fig. 61 Depress and turn center plunger.

All Models

21.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. 62) This keeps the orifices aligned with the tubes inside burner. Failure to do so could affect the flame appearance and performance of the unit.

22.Place conversion label on valve.

23.Reinstall the right and left log bracket assembly.

24.Reinstall the rear log bracket.

25.Replace logs.

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

Left Burner Leg

Injector Orifice

90°

ST353a

Fig. 62 Remove and replace injector orifices.

Table 2. Injector Orifice Size Matrix

	Conversion to Natural Gas				Input (Btu/h)
Kit #	Front	Part #	Rear	Part #	Minimum	Maximum
000-5021	#54 / .055”	30000514	#44 / .086”	30000334	19,000	28,000
000-5011
		Conversion to LP			Input (Btu/h)
Kit #	Front	Part #	Rear	Part #	Minimum	Maximum
000-5022	#69 / .029”	30000513	#54 / .055”	30000514	20,000	28,000
000-5012

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