Middleby Marshall PS360 VII.GAS Supply, During Pressure Testing Note ONE Following, Connection

VII.GAS SUPPLY

CAUTION

DURING PRESSURE TESTING NOTE ONE OF

THE FOLLOWING:

1.The oven and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressure in excess of 1/2 psi (3.45 kPa).

2.The oven must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressure equal to or less than 1/2 psi (3.45 kPa).

3.If incoming pressure is over14” W.C. (35mbar), a separate regulator MUST be installed in the line BEFORE the individual shutoff valve for the oven.

WARNING: To prevent damage to the

control valve regulator during initial turn- on of gas, it is very important to open the manual shutoff valve very slowly.

After the initial gas turn-on, the manual shutoff valve must remain open except during pressure testing as outlined in the above steps or when necessary during service maintenance.

SECTION 2

INSTALLATION

A. CONNECTION

Check the oven’s gas supply requirements before making the gas utility connection. Gas supply requirements are listed on the oven’s data plate (Figure 2-26) and in theOven Specifications table (Page 1-1 of this manual).

Check the oven data plate (see Figure 2-26) to determine the type of gas (Propane or Natural) to be used with the oven.

Refer to the instructions in the gas hose package (included in the Base Pad Kit) before connecting the gas line. One gas line connection method is shown in Figure 2-28; however, compliance with the applicable standards and regulations is mandatory.

Inlet, regulated, and pilot gas pressure readings can be taken using a “U” tube manometer at the tap locations shown in Figure 2-29.

One 90° elbow equals a 4’ (1.22m) length of pipe. The recommended pipe sizes are larger than usually required to eliminate any operation problems. It is much less expensive to make the initial installment large enough to do the job rather than redoing the job later.

NOTE

The installation must conform with local codes or in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1-latest edition.

In Australia, the installation must conform with AGA

Code AG601 and with any requirements of the

appropriate statutory authority.

CANADIAN:

CAN/CGA-B 149.1 Natural Gas Installation Code CAN/CGA-B 149.2 Propane Installation Code

	Figure 2-27
	Utility Connection Locations
LowerOven	UpperOven
Electrical
Junction Box
	Gas Utility
	Connection
Gas Utility
Connection
	Electrical
	Junction Box

2-13