Gas Pressure; High Altitude Adjustment - Jøtul GF 500 DV Portland Installation And Operation Manual

Gas Pressure

Correct gas pressure is essential for efficient and safe
operation of the GF 500 DV gas stove. It is important
that the correct pressure is established at the time
of the installation. Proper gas pressure provides
a consistent flow of gas to the appliance and is
instrumental in checking for gas leaks.
Pressure Test: Attach a manometer to the
appropriate test point on the valve. See fig. 37. The
gauge connections are located on the front of the valve.
Connections are identified by:
A - for Inlet or Supply Pressure (the amount of gas
coming to the valve.)
B - for Manifold Pressure (the amount of gas that
is coming out of the valve to the burner.)
ALWAYS TEST PRESSURES WITH VALVE REGULATOR
CONTROL KNOB SET ON "HIGH".
Regulator Control Knob
A
B
Figure 37.
Pressure test points, regulator control and pilot adjustment.
INLET GAS PRESSURES
(inches water column)
NATURAL GAS
PROPANE
The appliance and its appliance main gas valve
must be disconnected from the gas supply piping
system during any pressure testing on that system
at test pressures in excess of 1/2 psig (3.5 kPa).
The appliance must be isolated from the gas
supply line by closing its individual manual gas
shut-off valve (gas cock) during any pressure testing
of the gas supply piping system that is equal to or
less than 1/2 psig (3.5 kPa).
MANIFOLD PRESSURES
(inches water column)
NATURAL GAS
PROPANE
Pilot Adjustment Screw
MIN MAX
5.0 7.0
12.0 14.0
MIN MAX
1.2 3.8
2.9 11.0

High Altitude Adjustment

The decreased atmospheric pressure of higher
altitudes affects heat value of gaseous fuels. Most
gas suppliers derate the gas intended for use at
elevations above 2000 feet. Check with your gas
supplier before performing derate adjustment to
the burner. If the gas supplier does not derate fuels,
install High Altitude Adjustment Kit 157695 for
Propane and Kit 157696 for Natural gas.
U.S. & Canada per
ANSI Z21.88-2014 • CSA 2.33-2014, CAN/CGA 2.17
Orifice Sizes for 610-1370 meters (2000-4500 ft.):
Natural Gas: Right/Front - #44
Propane: Right/Front - 1.35 mm Left / Rear - 1.15 mm
See data on the stove rating plate for additional
information. At higher altitudes, consult the local
gas distributor or the authority having jurisdiction
for proper rating methods. If the installer must
convert the unit to adjust for varying altitudes, the
information label must be filled out and applied to
the appliance at the time of the conversion.
Derating Procedure
• Follow the steps for Burner Injector replacement
in the Fuel Conversion procedure on pages 17-18.
Use the injectors supplied with the adjustment kit.
Detailed instructions are also included in the kit.
• Conduct gas leak and gas pressure tests as de-
tailed the preceding section of this manual.
• Conduct system check and flame picture adjust-
ments as specified on pages 26-27.
INSTALLER: Fill out the appropriate information
and apply the high altitude conversion label provided
to the rating plate on the appliance. See fig. 38.
This appliance has been converted for use at an
altitude of___________ .
Orifice Size: __________ Manifold Press. _______
Input Btu/Hr. _________ Fuel Type ___________
Date: ___/___/___ Converted by:_____________
Cet appreil a été converti au pour utilisation à une
altitude de________. Taille d'orifice(s) __________
Pression au manifold_______ Type de gaz_______
Date: _____/______/______ Converti par:_______
Figure 38. High Altitude Conversion Label.
139760_A GF 500 DV Oct. 2017
Left / Rear - #48
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