Accu-Steam™ G2 Gas Service Manual
PAGE 23
SP8042-1609
Ignition System Testing
Gas Pressures
When trouble shooting ignition problems it is absolutely imperative to start off by
taking incoming/outgoing gas pressure and to get a reading from the flame sensor. These
three measurement are the most useful readings a technician can take when diagnosing
AccuTemp gas equipment and are often the most neglected.
The ACCU-STEAM G2 gas griddle requires the proper gas pressure setting to operate properly. All pressure
readings should be taken after the unit has reached a temperature of at least 200°F and while it is running to
ensure proper flow rates.
Required Material:
Manometer, 1/8” NPT barbed hose fitting one 2 inch long lengths of approx. 1/8” diameter flexible rubber hose
(closed on one end).
Tasks:
1) Verify pressure regulator vent are clear before making any pressure adjustments.
2) Remove the 1/8” NPT pipe plug from the main gas valve and install the 1/8” NPT barbed hose fitting.
Tighten and mount one length of the rubber hose.
3) Allow the appliance to heat up to at least 200°F. First, check the main burner regulator pressure. Remove
the rubber hose and replace with the manometer tube.
The pressure should be 5” WC for natural gas and
10“WC for propane.
If the outgoing pressure does not meet this values, remove the cap on the main burner
pressure regulator and adjust it to the necessary value.
4) Replace the hose fittings with original plug.
The internal dual gas valves are rated for a low pressure systems. Low pressure is 1/2lb (14” water column) or
less. An external regulator should ONLY be used if incoming gas pressure exceeds this value. If incoming gas
pressure does not meet 7” water column for Natural gas or 12” water column for propane then the Technion
should first check to see if there is an external regulator installed and if there is not, the gas supply company
should be contacted and asked to raise the supply pressure to the building. Another inspection point in the gas
system is the gas supply lines.
The recommended gas supply hose is commercial grade (Dormant) 3/4” ID
and not to exceed 4 feet in length from the main supply
. When inspecting the gas supply system, verify there
are no restricting adapters or regulators (Unless on a high pressure system) .
