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CONVERSION TO LOWER BTU RATING
THIS CONVERSION MUST BE DONE BY A QUALIFIED GAS
FITTER IF IN DOUBT DO NOT DO THIS CONVERSION !!
Natural Gas Conversion Kit 730-920
Contains:
Qty. Part # Description
1 904-240 Burner Orifice #37 (Natural Gas)
1 918-034 Decal "Converted to 30,000 Btu"
1 918-033 Instruction Sheet
Propane Conversion Kit 730-922
Contains:
Qty. Part # Description
1 904-390 Burner Orifice #52 (Propane)
1 918-034 Decal "Converted to 30,000 Btu"
1 918-033 Instruction Sheet
Additional Piece (pkg. with unit:
1
Log Bracket Restrictor
1) Shut off the gas supply.
2) Open the front door. Carefully remove the
logs and lava rock.
3) Remove burner. See diagram below.
Note: Use a
magnetic type
screwdriver if
possible.
4) Unscrew the 2 Rear
Log Pins and move
to the front hole po-
sition.
5) Remove Rear Log
Bracket and slide the
Log Bracket Re-
strictor between the
Rear Log Bracket and the burner, secure
with the 2 screws.
Position the Log Bracket Restrictor between
the Rear Log Bracket and the burner.
Regency U39 ULTIMATE Direct Vent Freestanding Gas Stove
6) Remove burner orifice with a 1/2" wrench
and discard.
Burner Orifice
7) Reinstall new burner orifice (NG stamped
#37 or LP stamped #52) and tighten.
8) Reverse steps 3) and 2).
9) Adjust Vent restrictor setting: To set the
Vent restriction as indicated in the diagram,
simply loosen the screws and push the vent
restrictor plate to the correct position. Tight-
en the screws.
Unit Btu/h
Restrictor Opening
U39 38,000
A 1-3/4" (44mm)
30,000
B 1-1/4" (32mm)
Vent Restrictor
Vent Restrictor
setting at High Btu/h
setting at Low Btu/h
10) Attach the label "This unit has been con-
verted to..." on top of the Serial # decal over
the higher Btu information.
11) Check for gas leaks.
12) Check inlet and outlet pressures.
13) Check operation of flame control. Check for
proper flame appearance and glow on logs.
GAS PIPE PRESSURE
TESTING
The appliance must be isolated from the gas
supply piping system by closing its individual
manual shut-off valve during any pressure
testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig. (3.45
INSTALLATION
kPa). Disconnect piping from valve at pres-
sures over 1/2 psig.
The manifold pressure is controlled by a regu-
lator built into the gas control, and should be
checked at the pressure test point.
Note: To properly check gas pressure,
both inlet and manifold pressures
should be checked using the valve
pressure ports on the valve.
1) Make sure the valve is in the "OFF" position.
2) Loosen the "IN" and/or "OUT" pressure
tap(s), turning counterclockwise with a 1/
8" wide flat screwdriver.
3) Attach manometer to "IN" and/or "OUT"
pressure tap(s) using a 5/16" ID hose.
4) Light the pilot and turn the valve to "ON"
position. Read manometer.
5) The pressure check should be carried out
with the unit burning and the setting should
be within the limits specified on the safety
label.
6) When finished reading manometer, turn off
the gas valve, disconnect the hose and
tighten the screw (clockwise) with a 1/8"
flat screwdriver. Note: Screw should be
snug, but do not over tighten
Valve Description
1) Gas cock knob
2) Manual high/low adjustment
3) Pilot Adjustment
4) Thermocouple Connection
5) Main Operator
6) Outlet Pressure Tap (Manifold
Pressure)
7) Inlet Pressure Tap (Supply
Pressure)
8) Pilot Outlet
9) Main Gas Outlet
10) Flange Securing Screw Holes
11) Alternative TC Connection Point
12) Thermoelectric Unit
13) Additional Valve Mounting Hole
23
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