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Warning: Conversion must be done by a qualified service technician. Main burner orifice(s) and new gas
conversion label are provided in conversion kit attached to manifold pipe.
1. Make sure gas supply to furnace is off prior to conversion and disconnect electrical power to unit.
2. Open brass union located between the gas valve and burner box. Re-
move the 4 mounting screws securing manifold plate to the burner box.
Remove the top 2 screws holding the burner box top in place and then
remove the 1 screw holding the end of the manifold pipe in place. Grasp
union and remove manifold pipe.
3. Remove (1) Natural gas main burner orifice marked 44 for DV-20E, (2)
Natural gas main burner orifices marked 44 for DV-40E or (3) Natural
gas main burner orifices marked 47 for DV-55E located in the manifold
pipe and replace with (1) LP gas main burner orifice marked 55 for
DV-20E, (2) LP gas main burner orifices marked 55 for DV-40E or (3)
LP gas main burner orifices marked 1.20mm for DV-55E supplied in
conversion kit.
4. Replace manifold pipe being sure to locate orifice(s) in the end of the burner. Secure the manifold and top burner box cover in
place using the screws earlier removed. Reconnect the brass union.
5. Remove the vinyl cap and unscrew the gas control convertible regulator and reverse to LP gas side (red ring on regulator) and screw
back into place. Reattach vinyl cap. Refer to figure illustrating the gas valve.
6. Place Natural gas main burner orifice(s) in conversion kit. Attach conversion kit to manifold pipe. Attach new label to unit name-
plate indicating that the unit was converted to LP gas.
7. Turn on gas supply to furnace and check all gas connections for leaks with soap solution, watching for bubbles on all gas connec-
tions.
8. Turn on electrical power to unit and turn on furnace to verify proper operation. It may take several tries for ignition to completely
purge all the air from the gas line.
Warning: Conversion must be done by a qualified service technician. Main burner orifice(s) and new
gas conversion label are provided in conversion kit attached to manifold pipe.
1. Make sure gas supply to furnace is off prior to conversion and disconnect electrical power to unit.
2. Open brass union located between the gas valve and burner box.
Remove the 4 mounting screws securing manifold plate to the burner
box. Remove the top 2 screws holding the burner box top in place
and then remove the 1 screw holding the end of the manifold pipe in
place. Grasp union and remove manifold pipe.
3. Remove (1) LP gas main burner orifice marked 55 for DV-20E, (2)
LP gas main burner orifices marked 55 for DV-40E or (3) LP gas main
burner orifices marked 1.20mm for DV-55E located in the manifold
pipe and replace with (1) Natural gas main burner orifice marked 44
for DV-20E, (2) Natural gas main burner orifices marked 44 for DV-
40E or (3) Natural gas main burner orifices marked 47 for DV-55E
supplied in conversion kit.
4. Replace manifold pipe being sure to locate orifice(s) in the end of the burner. Secure the manifold and top burner box cover in
place using the screws earlier removed. Reconnect the brass union.
5. Remove the vinyl cap and unscrew the gas control convertible regulator and reverse to Natural gas side and screw back into place.
The red LP ring will be up just under the vinyl cap. Reattach vinyl cap. Refer to figure illustrating the gas valve.
6. Place LP gas main burner orifice(s) in conversion kit. Attach conversion kit to manifold pipe. Attach new label to unit nameplate
indicating that the unit was converted to Natural gas.
7. Turn on gas supply to furnace and check all gas connections for leaks with soap solution, watching for bubbles on all gas connec-
tions.
8. Turn on electrical power to unit and turn on furnace to verify proper operation. It may take several tries for ignition to completely
purge all the air from the gas line.
CONVERSION INSTRUCTIONS FROM (LP) PROPANE GAS TO NATURAL GAS
CONVERSION INSTRUCTIONS FROM NATURAL GAS TO (LP) PROPANE GAS
GAS VALVE-NATURAL
GAS VALVE-LP
GAS CONVERSION INSTRUCTIONS
ACF Greenhouses
