Middleby Marshall PS360WB-U English, A. Gas Utility Rough-In Recommendations, Gas Meter, Gas Line

ENGLISH

SECTION 2 - INSTALLATION

A.Gas Utility Rough-In Recommendations

The following gas system specifications are STRONGLY RECOMMENDED. Deviating from these recommendations may affect the baking performance of the oven.

Gas Meter

•One or two oven cavities: 354 l/sec meter

•Three or four oven cavities: 566 l/sec meter

Gas Line

•DEDICATED LINE from the gas meter to the oven

•50.8mm pipe for natural gas

•38.1mm pipe for propane

•Maximum length: 61m. Each 90° elbow equals 2.13m of pipe.

B.Connection

WARNING

Some procedures in this section may require conver- sions, readjustments, or service on the oven's gas system. Before performing these procedures, check that the main gas supply valve and the circuit breaker/fused disconnect are in the OFF ("O") position. After completing these proce- dures, perform a gas leak test before operating the oven.

CAUTION

The terms of the oven's warranty require all start-ups, conver- sions and service work to be performed by a Middleby Marshall Authorized Service Agent. The installation, start-up and changes required when changing from one gas type to another can be performed ONLY by a certified professional.

NOTE: The gas supply connection should be according to applicable ISO 228-1 or ISO 7-1 recommendations. All aspects of the gas supply connection must comply with current IEC/CEE requirements and with all applicable local, national, and inter- national codes.

Check the oven’s gas supply requirements before making the gas utility connection. Gas supply requirements are listed on the oven’s serial plate.

Check the serial plate to determine the type of gas to be used with the oven. Check that the gas type indicated matches the local supply at the installation. If the gas type on the serial plate does NOT match the local supply, directions for converting the oven for use with other gases are described in Preparation for Use with Various Gases, in this section.

Refer to the instructions in the gas hose package (included in the Installation Kit) before connecting the gas line. One gas line connection method is shown in Figure 2-15; however, compliance with the applicable standards and regulations is mandatory.

Figure 2-15 - Flexible Gas Hose Installation

To Gas

Supply Pipe

Appliance

Connection/Male

Nipple

90°	Full-Flow Gas
Elbow	Shutoff Valve

Flexible

Gas Hose

Figure 2-16 - Gas Burner and Piping Assembly

Supply (inlet)	Orifice
pressure tap	(manifold)
Multifunction Gas Valve	pressure tap

Burner Blower

High Flame

Solenoid Valve

Governor
disabled for
liquid
propane (LP)
operation
Governor	Multifunction
enabled for
	Gas Valve
natural gas
operation

Gas Burner

Pilot Line

Low Flame

Bypass Line

Union Pilot pressure tap

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