Vermont Castings TP-250 - Manual (Page 2)

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CO134
AF pilot orifice
3/07
Index Tab
Snap Ring
Allen Wrench
CO134
Fig. 5 Remove pilot orifice.
CO133
pilot hood
3/07
Pilot
Bracket
Pilot Hood
CO133
Fig. 4 Remove pilot hood.
FP1476
bracket screws
4/04 djt
Hex Nuts
FP1476
Fig. 3 Use a 3/8” socket to remove hex nuts holding burner
legs.
burner assembly on both sides. Remove burner
tubes.
b. Remove two (2) hex nuts holding the left burner
leg. Remove burner leg. (Fig. 3)
c. Remove two (2) screws holding the pilot assem-
bly to the burner assembly. Move the pilot assem-
bly toward the back.
d. Slide the burner housing assembly to the left and
away.
e. Replace the four (4) injectors. Refer to Table 3.
5. Remove pilot orifice with 5/32” Allen wrench. (Fig. 5)
6. Install the conversion orifice.
7. Reinstall pilot hood. Be sure to align hood with index
tab.
Valve Conversion
1. Remove two (2) screws holding the pilot assembly
to the burner assembly. Move the pilot assembly
toward the back wall.
2. Using a back-up wrench, disconnect the gas supply
fitting near the right rear corner of the firebox.
3. Remove four (4) screws holding the burner assem-
bly to the firebox floor.
4. Carefully slide the burner assembly out of the way.
5. Remove 13 screws around the perimeter holding
large access panel on the of the firebox.
6. Carefully pull back the panel just enough to gain
access to control box.
7. Locate the black plastic cap on the gas valve. (Fig.
6) Remove the black cap by pulling the cap straight
off. Note the position of the marker on the top of
the rotary knob. This marker will point to NAT or LP.
(Fig. 7)
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Black Plastic Cap
Minimum Rate
Screw
CO138
Fig. 6 AF4000 Valve in place.
Front of Fireplace
Replace Pilot Orifice
4. Remove pilot hood by lifting up. (Fig. 4) NOTE: It is
not necessary to remove the pilot tube for conver-
sion.
8. To convert the valve from NG to LP, push in the
knob and rotate 90° (1/4 turn). NOTE: The shaft
should point to LP. The shaft will remain pushed-in.
9. Remove the slotted brass minimum rate screw
located in the valve next to the motor drive. (Fig. 7)
10. Replace the minimum rate screw with the one
provided in the LP conversion kit supplied with this
fireplace. Ensure the screw is fully installed.
11. Install the enclosed identification label to the valve
body where it can be easily seen.
12. Reinstall steel panel.