Vermont Castings TP-250 Manuale Utente

1

20012371  11/07  Rev. 3

Installation Instructions

This kit is designed for conversion of the Direct Vent 
Gas Heater Models DVT38, DVT44 and DVT38S2 
equipped with the American Flame AF-4000 Series 
valve.

Tools required for conversion: TORX T20 Security Tee 
bit, 3/8” and 1/2” deep well socket, Phillips or Robertson 
screwdriver, 5/32” allen wrench, small flat blade screw-
driver, 7/16” nut driver or socket.

Compare contents of Figure 1 with actual parts re-
ceived. If any parts are missing or damaged, contact 
your dealer before starting conversion.

Allow unit to cool if it has been operating.
Before proceeding with conversion shut off fireplace 
and turn gas supply OFF. Turn OFF any electricity that 
may be going to appliance. 

1.  Remove glass frame. Refer to Homeowner’s Manual. 
2.  Remove lava rock, volcanic rock, embers and logs. 

Carefully remove brick panels.

a.  With a Phillips or Robertson screwdriver, remove 

the two (2) screws holding the fettle to the burner 
assemblies. With a hex, remove the two (2) hex 
nuts holding the burner tube to the front of the 
burner assembly. Remove burner tube.

b.  With the 3/8” socket remove two (2) hex nuts 

holding the left burner leg. Remove burner leg. 
(Fig. 2)

FP1559a
remove nuts
3/05

Hex Nuts

FP1559a

Fig. 2  Use 3/8” socket to remove hex nuts holding left burner 
leg.

c.  Slide the burner housing assembly to the left and 

away. Adjust air shutter setting. Pull burner tube 
assembly forward and out. Adjust air shutter set-
ting. Refer to Table 2.

d.  Remove two (2) screws holding the pilot as-

sembly to the burner assembly.  Move the pilot 
assembly toward the back.

e.  Slide the burner housing assembly to the left and 

away.

f.  With the 1/2” socket, replace the three (3) injec-

tors. Refer to Table 1.

a.  With a Phillips or Robertson screwdriver, remove 

the four (4) nuts holding the fettle to the burner 
assemblies. With a hex, remove the two (2) hex 
nuts holding each burner tube to the front of the 

CAR205

DVTIN

fuel conversion

5/07  djt

Burner Orifice (3 or 4)

(Refer to Table 1  or 3 

to Confirm Sizes)

CAR205

Fig. 1  Carton contents.

Pilot Orifice

Label

Valve Minimum 

Rate Screw

(DVT44,DVT38S2)

Pressure 
Test Adapter

Valve Minimum 

Rate Screw 

(LP) (DVT38)