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DV400S DIRECT VENT ROOM HEATER
March 4, 2002 Page 19 30211C
R
GAS LINE INSTALLATION
The valve is located near the lower right rear corner of the
appliance. (See Figure 14.) Install the gas supply line to the
valve. For ease of installation of the unit to the supply line, a
flexible connector and manual shut - off valve are supplied. The
manual shut - off valve should be installed onto the supply line,
ahead of the flex. All connections must be checked for leaks
with a soap and water solution or gas sniffer.
GAS PRESSURE
For natural gas, the minimum inlet gas supply pressure is 4.5
inches water column, and the maximum inlet gas pressure is
7.0 inches water column, for the purpose of input adjustment.
Input rate is 29,500 Btu/hr. For propane gas, the inlet gas
supply pressure must be at least 11.0 inches water column and
a maximum 14.0 inches water column. Input rate is 28,500
Btu/hr.
Manifold pressure for this heater is 1.6 - 3.5 inches water col-
umn for natural gas and 6.3 - 10.0 inches water column for pro-
pane gas. This heater has a variable adjust manifold.Pressure
taps are located on the front of the valve for both inlet and
outlet pressure.
FUEL CONVERSION
For conversion of the DV400S unit, use Kit # 844-8240 to
convert from Natural Gas to LP. or the Kit #844-8230 to
convert from LP to Natural Gas.
A. Gas and Power Supply.
1. Shut off the gas supply to the unit.
2. Unplug the blower cord from the power supply (if installed).
3. Carefully remove the logs and burner from the
firebox. See Figure A for burner removal.
B. Burner Orifice.
Adjust air shutter adjustment screw as necessary to allow
removal of the burner orifice.
1. Loosen and remove the retaining nut on the burner orifice
with a 5/8" wrench. See Figure B.
2. Replace the Burner Orifice with the .063 LP Main Burner
Orifice supplied in the LP kit. (.106 for NG). Reposition the
air shutter onto the burner orifice. Refer to Page 20, on
the following page, for High Altitude Installation.
C. Pilot Orifice.
1. Remove top of pilot hood. See Figure C.
2. Use a 5/32 allen wrench to remove the pilot injector orifice
and install pilot orifice supplied. (.35 LP) (.62 NG). See
Figure D.
3. Replace the pilot hood ensuring that it is seated and
aligned.
D. Re-Assembly
1. Replace burner into the unit, making sure burner end is
over orifice.
2. Install logs, replace glass front, plug in blower (if installed)
and turn on gas supply.
Figure B
Figure C
Figure D
PRE-INSTALLATION PREPARATION
Valve
Figure 14 - Access to Valve
Figure A
screw