Middleby Marshall PS360WB EN - Manual (Page 19)

2-13
SECTION 2
INSTALLATION
Figure 2-27
Utility Connection Locations
VII.GAS SUPPLY
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 the Oven
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
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.
Lower Oven Upper Oven
Electrical
Junction Box
Gas Utility
Connection
Gas Utility
Connection
Electrical
Junction Box