15
130102- 1 GF 370 DV MV 2/22
Figure 7.3. Pressure test points located on the front of the
valve.
Manifold
Inlet
Pilot Adjustment
E
A
Figure 7.2. Gas supply valve types and fittings.
Soap Solution Leak Test
• Mix a 50-50 solution of water and dish soap.
• Light appliance - see lighting instructions on the back
cover of this manual or on the rating plate.
• Brush or spray all joints and connections with the soapy
water solution.
• If bubbles appear at any connection or seam or a gas
odor is detected, immediately turn gas control knob to
the OFF position.
Tighten or reconnect the leaking joint and retest for any
gas leaks.
The line must be disconnected from the gas supply line
by closing the main supply manual gas shut-off valve (gas
cock) during any pressure testing of the gas supply piping
system that is equal to or exceeds pressures of 1/2 psig (3.5
kPa).
4. Testing Gas Pressure
Proper gas pressure provides a consistent flow of gas to
the appliance and is instrumental in checking for gas leaks.
There are two pressure test points on the front of the stove
control valve where test gauge connections are made. See
Fig. 7.3. Gauge connections are identified by:
• E for inlet or supply pressure ( the amount of gas com-
ing to the valve.)
• A for manifold pressure (the amount of gas that is com-
ing out of the valve to the burner.)
WARNING
DO NOT ALLOW THE INLET GAS PRES-
SURE TO EXCEED 14.0” WC (OR 1/2 PSIG)
AS SERIOUS DAMAGE TO THE VALVE MAY
RESULT.
NEVER USE AN OPEN FLAME TO CHECK FOR
GAS LEAKS.
ALWAYS REFER TO THE LIGHTING INSTRUC-
TIONS ON THE INSIDE BACK COVER OF THIS
MANUAL WHEN LIGHTING THE STOVE.
Inlet Pressure
MIN MAX
Natural Gas: 5.0 WC (1.24 kPa) 7.0 WC (1.74 kPa)
Propane: 12.0 WC (2.99 kPa) 14.0 WC (3.48
kPa)
Manifold Pressure
MIN MAX
Natural Gas: 1.6 WC (0.398 kPa) 3.5 WC (.87 kPa)
Propane: 6.4 WC (1.59 kPa) 10.0 WC (2.48 kPa)
ALWAYS TEST PRESSURES WITH VALVE REGULA-
TOR CONTROL AT THE HIGHEST SETTING.
Symptoms of incorrect gas pressure include:
Insufficient gas pressure:
• Small pilot flame which can result in insufficient milli-
volts.
• Little variation in flame picture between HI and LO
regulator settings.
• Insufficient gas to support more than one appliance caus-
ing nuisance outages or gas surges.
Excessive gas pressure:
• Permanent damage to valve causing complete appliance
shut down.
• Too large a pilot flame resulting in overheating of the
power generator and consequent shut down.
• Sooting due to impingement and/or incorrect fuel to air
mix.