APW Wyott GGM-24S, Owner'S Manual

2M-Z2381

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APW Wyott Series Gas Griddles

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EXHAUST CANOPY

It is essential that facilities be provided over the griddle to carry off fumes and gases. However, 

the unit should not be directly connected to a flue or stack.

LEVELING UNIT

This griddle is supplied with (4) feet which must be screwed into the legs attached to the body. 

Level unit by adjusting the (4) feet which have an adjustment of 1-3/4" (43.75mm) for accurate 

and perfect lineup with other units.  After the griddle is in its final position, adjust the legs to 

create 1/8 inch slant from back to front on the griddle plate.  This will allow grease to run into 

the grease gutter and provide the proper combustion air for the burners.  

DO NOT INSTALL WITHOUT ATTACHING FEET - DO NOT REMOVE FEET.

GAS PIPING

Gas piping shall be of such size and so installed as to provide a supply of gas sufficient to meet the full 

gas input of the appliance. If the appliance is to be connected to existing piping, it shall be checked to 

determine if it has adequate capacity. Joint compound shall be used sparingly and only on the male threads 

of the pipe joints. Such compounds shall be resistant to the action of LP gases. WARNING: Any loose 

dirt or metal particles which are allowed to enter the gas lines on this appliance will damage the valve 

and affect its operation. When installing this appliance, all pipe and fittings must be free from loose dirt.

GAS PRESSURE REGULATOR

A convertible pressure regulator is provided with each griddle. It should be connected to the inlet pipe at 

the rear of the unit. The gas supply line is then connected to it. It is shipped set for 6" (15.24cm) water 

column manifold pressure for use with natural gas.

MANUAL SHUT-OFF VALVE

A manual shut-off valve should be installed upstream from the union and within 6 feet (1.829m) of this 

appliance.

LP [PROPANE] GAS CONVERSION

This griddle is equipped with fixed orifice hoods and is shipped from the factory for use on natural gas. 

Note:  GGM & GGT units use a #47 drill orifice for natural gas and a #55 drill orifice for propane. 

To convert to propane gas, install the burner orifice hoods, located in the grease drawer, as follows:

1.  Remove front panel by removing screws located on the front and the bottom.

2.  Remove the burner(s) from the orifice hood(s).  This is accomplished by removing the burner 

mounting screw(s) and sliding the burner(s) off the hood(s).

3.  Remove natural gas orifice hood(s) and install the propane hood(s) furnished.
4.  Reinstall burner(s).

5.  Reinstall front panel.
6.  Remove the slotted, or hex-threaded, plug from the pressure regulator.  Invert the plug and re-install.  

The letters "LP" should now be visible on the plug.  The regulator is now set for 10" (25.4cm) water 

column.

7.  Set manifold pressure to 10" (25.4cm) water column. A 1/8" pipe plug on the supply pipe can be 

removed for attaching a pressure gauge.

CONNECTING GAS SUPPLY LINE

The gas inlet of the griddle is sealed at the factory to prevent entry of dirt. Do not remove this seal until 

the actual connection is made to the gas supply line.  

CHECKING FOR GAS LEAKS

Soap and water solution or other material acceptable for the purpose shall be used in locating gas 

leakage.  Matches,  candle  flame,  or  other  sources  of  ignition  shall  not  be  used  for  this  purpose. 

Check entire piping system for leaks.

CAUTION