Installation
MKH Series Gas Griddle
L25-053 Rev. 1 (12/11)
8
1.7. Final Gas Connection
A properly installed gas supply system will deliver adequate pressure (7 to 8 inches w.c. for natural gas,
11 to 12 inches w.c. for propane) to all appliances connected to the line, operating at full demand.
1.7.1. Regulator Assembly
An adequate gas supply is important for the appliance to operate properly. Undersized lines or low-
pressures will restrict the volume of gas required for satisfactory performance. A steady supply
pressure between 7” and 8” w.c. for natural gas or 11” to 12” for propane gas is required. With all gas
appliances operating simultaneously, the manifold pressure on all gas appliances should not show any
appreciable drop. Fluctuations of more than 25% on natural and 10% on propane gas will create pilot
problems and affect burner operating characteristics. Contact your gas company for correct supply line
sizes. After connection, a certified gas service agent should check all newly installed equipment for
correct gas pressure. The unit should be connected ONLY to the type of gas for which it is equipped.
Check the type of gas on the Data plate, see section 1.1 of this manual.
Figure 6
1. The gas input regulator for your new appliance has been installed at the factory, See Figure 6 for the
location of the regulator and the manual shut off valve equipped on your appliance. Using a regulator
other than the one supplied with the unit will void the warranty.
2. The manifold pressure must be maintained at the pressure marked on the Data plate. The manifold
pressure reading is taken at the 1/8” NPT coupling located behind the lower front panel next to the gas
regulator, see Figure 6. To check the supply pressure to the appliance use the pressure test point
supplied on the manual shut off valve, also see Figure 6.
3. Use pipe joint compound that is suitable for use with LP gas on all threaded connections.
4. Turn off all thermostats.
5. Turn on gas supply and check all connections for leaks using ONLY a leak checking fluid or soapy
water. NEVER use an open flame to check for gas leaks.
6. Provisions must be made for adequate air supply for both the appliance and room occupants.
7. Keep area in front of unit free from obstruction that could block flow of combustion and/or ventilation
air.
1.7.2. Gas Settings
Orifices are sized to provide proper gas flow to the rated BTU/hr for each model. Regulator pressure
must be measured and adjusted before the unit goes into service, following installation and when
operational performance is in question. The manifold and supply pressure readings are taken at the
pressure test points provided, see Figure 6.
Gas Type
BTU/hr(kW) per Burner
Manifold Pressure (All Models)
Natural
13,333 (3.9)
4.0" WC (10.1cm)
Propane
13,333 (3.9)
10.0" WC (25.4cm)
