Vermont Castings TP-250 User's Manual
Contents
1. 043 073 po Conversionto Natural Gas 9 Conversion to Natural Gas Oa l om a Eee Se ee Front Part Middle Part Rear Part Minimum Maximum 46 000 059 055 128 20013199 DVT44IN 53 20007347 40 20004263 23 20009044 37 000 60 000 059 098 154 Table 2 Air Shutter Settings Conversion to LP or Natural Gas Burner Tube Burner Housing Air Shutter Setting Air Shutter Setting DVT38IP Fully open n a DVT44IP Fully open Table 3 DVT38S2 Injector Orifice Size Matrix Conversion to LP KiT Burner 20012368 Burner Housing Burner Burner Input BTU hr Model Housing Pilot Part Tube Tube Part Min Max 052 055 043 043 Conversion to Natural Gas KiT Burner P 20013196 Burner Housing Burner Burner Input BTU hr Model Housing Part Pilot Part Tube Tube Part Min Max DVT38S2IN 38 20009310 38 20009310 45 20010169 45 20010169 38 000 56 000 101 101 082 082 Table 4 Valve Minimum Rate Screw Drill Size ID Stamp DVT38IP 31 120 20012364 DVT44IP No Shank 20012264 DVT38S2IP Screw DVT38IN DVT44IN No Shank 20013198 DVT38S2IN Screw CFM Corporation 2695 Meadowvale Blvd Mississauga Ontario Canada L5N 8A3 800 668 5323 www cfmcorp com CFM Corporation2. Fuel Conversion Kit Installation Instructions Kits Natural to LP 20011992 20012367 20012368 LP to Natural 20013200 20013199 20013196 for Models DVT38IN DVT44IN DVT38S2IN WARNING The installation of this conversion kit must only be undertaken by a qualified certified gas appliance installer 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 Check Contents of Shipping Carton Compare contents of Figure 1 with actual parts re ceived If any parts are missing or damaged contact your dealer before starting conversion Conversion Precautions 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 Conversion Procedure 1 Remove glass frame Refer to Homeowner s Manual 2 Remove lava rock volcanic rock embers and logs Carefully remove brick panels Burner Orifice 3 or 4 Refer to Table 1 or 3 to Confirm Sizes Pilot Orifice vst Pressure Valve Minimum Rate Screw Test Adapter DVT44 DVT38S2 7 Label Valve Minimum iene Rate Screw AN
3. 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 Pilot Hood Allen Wrench Fig 5 Remove pilot orifice 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 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 Black Plastic Cap Minimum Rate Screw Front of Fireplace Fig 6 AF4000 Valve in place
4. LP DVT38 CAR205 Fig 1 Carton contents A CAUTION Logs may be hot 3 Models DVT38 DVT44 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 Hex Nuts 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 3 Model DVT38S2 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 20012371 11 07 Rev 3 1 Hex Nuts 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
5. 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 Pilot Adjustment Screw Gas Type Marker Minimum Rate Screw Fig 7 Remove black plastic cap and adjust rotary knob to correct gas type LP position shown Replace minimum rate screw with one supplied in conversion kit 13 Reinstall burner to original position Reinstall burner leg burner tube and fettle Re attach supply tube to gas supply fitting Using a back up wrench tighten securely 14 Test for leaks Apply electric and gas to the system 15 Light the pilot burner using the remote control With soapy solution check for leaks around the pilot as sembly where the tube enters the pilot assembly Tighten fitting if necessary 16 Light the main burner and check for leaks around the burner supply tube fittings and burner orifices Tighten if necessary 17 Turn fireplace OFF 18 After the conversion and leak checks have been made manifold outlet pressure can be checked with a manometer at the test port
6. s located at the side front edge of the fireplace opening The lower test port is manifold outlet pressure CAUTION Turn off the gas supply before removing test port plug 19 Using a 7 16 nut driver remove the threaded plug from the test port 20 Thread the supplied extension adaptor into the open test port 21 Attach a 1 4 diameter pressure gauge flexible hose fully onto the barb of the adaptor 22 Turn on gas supply and operate valve with remote control as needed to indicate gas pressure The manifold pressure for LP should be approximately 10 0 wep CAUTION Turn off the valve and gas supply before removing test port adaptor and replac ing plug 23 After test remove adaptor and replace plug 24 Turn on gas supply and check that plugs are tight and leak free 25 Follow instructions in Homeowner s Manual to re assemble brick panels logs lava rock volcanic rock embers and andirons 26 Replace glass frame 27 Conversion complete Pilot Flame Adjustment Typically the top 3 8 or 1 2 of the thermopile should be engulfed in the pilot flame Fig 8 To adjust pilot burner Adjust pilot screw on valve to provide properly sized flame FP1229a Fig 8 Correct pilot flame appearance Table 1 Injector Orifice Size Matrix Conversion to LP EE use Burner Orifice Front Part Middle Part Rear Part _ Minimum Maximum 46 000 033 041 070 037
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