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Document #: GAR_IOM_4605246 – 1/21
Installation
Section 2
Gas Connection
• Check the rating plate to determine the type of gas to
connect to the unit. Only connect the gas type listed on
the rating plate to this unit.
• If connecting the unit to gas with a flexible gas hose, a
restraining device must also be installed. The flexible gas
hose should be a minimum of ¾” diameter.
• The appliance and its individual shut off valve must be
disconnected from the gas supply piping system during
any pressure testing of that system in excess of ½ PSIG
(3.45 kPa)
• The size of the main gas line is important. We
recommend using a main gas line with a pipe diameter
of 1-1/2” minimum to avoid pressure drop or gas volume
issues. Connect to the appliance with a ¾” diameter pipe
or approved flexible gas hose.
• Before connecting new pipe, it must be blown out to
dispose of any foreign particles. These particles can
contaminate or block openings and cause equipment
failures.
• When using thread compound, use small amounts on
male threads only. Use a compound that is not affected
by the chemical action of LP gases. Avoid applying
compound to the first two threads to prevent clogging of
the burner orifices or gas valve.
• Have installer check all gas connections for leaks with a
soap solution. DO NOT USE matches, candles or other
ignition sources when checking for leaks.
• Check the “Gas Specification Chart” to determine the
recommended incoming supply pressure based on gas
type.
• The unit is supplied with an appliance regulator. Be sure
to connect this to the back of the unit.
• The gas valve inside the unit has a gas pressure test port
that can be used to verify manifold/working pressure.
Check the “Gas Specification Chart” to determine the
manifold/working pressure based on gas type. After
installing the unit, be sure to verify this pressure is
correct by connecting a manometer to the test port on
the gas valve. If necessary, adjust the appliance regulator
as required to get the correct manifold/working pressure
at the test port.
• Gas pressures should only be checked by the local Gas
Company or an authorized service technician.
• If connecting the appliance with a quick disconnect,
ensure the fittings are installed in the correct orientation
(based on the flow of gas) and that the male coupler is
fully inserted (and snaps into) the female connecter. Only
use approved quick connect fittings.
• If there is a momentary power failure (ie: power turns
off but comes right back on) when you are operating the
appliance, the internal gas valves will stop the flow of
gas for your safety. However, the appliance will restart
automatically on restoration of power; you do not need
to take any action.
• If there is a sustained power outage, be sure to turn
off the appliance at the front switch(es). Do not walk
away from a unit that has no power but has the front
switch(es) turned on because if power is restored, the
burners will automatically light and can start a fire if
flammable materials have been left on or near the
appliance.
Inlet Pressure – Loosen screw and connect a manometer to
this port to read the manifold/working pressure. Manifold/
Working pressure must be 4.5” WC for both Natural Gas and
Propane. If not, adjust the appliance regulator supplied with
the unit to get the correct value.
Servo Regulator – Used to adjust the low flame setting. Set
at the factory;
DO NOT adjust.
Throttle – Used to set the main flow through the valve. Set at
the factory;
DO NOT adjust.
Outlet Pressure – Used to set the vacuum pressure of the
valve at the factory during initial set up of the unit.
DO NOT
use.
