Vermont Casting DV580, DV360 Injector Orifice Size Matrix, Conversion to Natural Gas, Input BTU/hr

unfastening the screw on the tray to the right side of the orifice. Slide the bracket/gasket assembly over the fitting on the manifold toward the back with the gasket to the right. Secure the bracket/gasket as- sembly using the screw removed earlier. (Fig. 67a)

5.Replace the orifices according to the table on Page 42.

6.Replace the mixing tube on the burner housing by removing the two (2) screws that secure the mixing tube to the burner housing assembly. Remove the old gasket behind the mixing tube. (Fig. 68) NOTE:

The mixing tube for propane gas has only two bimetallic springs that are in the closed position at cold start. The mixing tube for natural gas has two spring/shutter collar assemblies that are in the closed position at cold start. Make sure the correct mixing tube is used for conversion.

7.Use the new gasket supplied in the conversion kit and proper mixing tube and replace in reverse order.

8.Reassemble the burner housing assembly, the burner tube assembly and the fettle in reverse order.

DV580

1.Remove manifold mounting screw from burner. (Fig. 69)

2.Remove burner orifice from manifold assembly using 3/8” wrench. (Fig. 70)

3.Install conversion orifices in place of orifices just removed.

4.Remove air shutters from burner pan by removing shutter retaining screw then air shutter. (Fig. 71)

5.Replace only the rear air shutters. Natural Gas: Rear air shutter, fully open.

	Front air shutter, fully open.
LP:	Rear air shutter, fully open.
	Front air shutter, fully open.

6. Re-install manifold to burner pan.

Pilot Orifice Conversion

NOTE: It is not necessary to remove the pilot tube for conversion.

1.Loosen pilot hood turning counterclockwise using a 7/16” wrench. (Fig. 76)

DV360/580 Series Direct Vent Gas Fireplace

2.Remove pilot orifice with needlenose pliers. (Fig. 77)

3.Install conversion pilot orifice.

4.Reinstall pilot hood. Be sure to align pilot hood with index marks.

	Pilot Hood
Index
Marks
	Pilot
	Bracket
	CO105
Fig. 76	Remove pilot hood.

	Pilot
	Orifice
	CO106
Fig. 77	Remove pilot orifice.

5.Turn the gas supply valve and gas valve on and test for leaks. Use a 50/50 solution of liquid soap and water to test for leaks at gas fittings and joints. Apply water/soap solution with brush only - do not over ap- ply. NEVER test with an open flame.

6.Follow procedure on rating plate to light the pilot. Check for leaks.

7.Turn main burner on and check for leaks.

8.Install logs. Refer to Page 25 for proper log place- ment.

Installation complete.

Table 1 Injector Orifice Size Matrix

Conversion to Natural Gas

			Burner Orifice				Input (BTU/hr)
Kit #	Model	Front	Part #	Rear		Part #	Minimum	Maximum
20010751	DV360RP/RFP	#53	20007347	#43	30000512		18,500	30,000
		(.0595”)		(.089”)
		Conversion to LP
			Burner Orifice				Input (BTU/hr)
Kit #	Model
		Front	Part #	Rear		Part #	Minimum	Maximum
20010752	DV360RN/RFN	#64	20010935	#54		20000130	17,000	30,000
20011025	DV360EN		(.036”)			(.055”)

20010667 43