Middleby Marshall PS555G GAS - Manual (Page 12)

12
ENGLISH
SECTION 2 - INSTALLATION
plies with the Standard for Quick-Disconnect Devices for Use
With Gas Fuel, ANSI Z21.41 (in U.S.A.), or, if applicable, Quick-
Disconnect Devices for Use With Gas Fuel, CAN1-6.9 (in
Canada).
C. Gas Conversion
Where permitted by local and national codes, it is possible to
convert ovens from natural to propane gas, or from propane to
natural gas. Use the appropriate Middleby Marshall Gas
Conversion Kit for the specific oven model.
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.
Figure 2-15 - Flexible Gas Hose Installation
To Gas
Supply Pipe
90°
Elbow
Union OR quick-
disconnect device
Flexible
Gas Hose
Full-Flow
Gas
Shutoff
Valve
90°
Elbow
Figure 2-16 - Gas Burner and Piping Assembly
Modulating
gas valve
Pilot pressure tap
(where pilot gas
pressure is measured)
Combination Gas
Control Valve
(Safety Regulator)
Gas Burner
Burner
Blower
Inlet pressure
tap (where
incoming gas
pressure is
measured)
Manifold pressure tap
(where manifold gas
pressure is measured)
On/Off Knob
Always leave in
“ON” position
Manual
shutoff
valve
Gas line for
other oven
cavities
Cap for top
oven cavity
Nipple, 1-1/4”
dia. X 3”
(76mm) L, NPT
Elbow, 90°,
1-1/4” dia.
Gas Pipe, 1-1/4”
dia. X 54”
(1372mm) L
B. Connection
Check the oven’s gas supply requirements before making the
gas utility connection. Gas supply requirements are listed on
the oven’s serial plate and in Table 1-3, Gas Orifice and
Pressure Specifications (in Section 1, Description).
Check the serial plate 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 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.
Inlet, regulated, and pilot gas pressure readings can be taken
using a “U” tube manometer at the tap locations shown in
Figure 2-16.
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
Certain safety code requirements exist for the installation of gas
ovens; refer to the beginning of Section 2 for a list of the
installation standards. In addition, because the oven is equipped
with casters, the gas line connection shall be made with a
connector that complies with the Standard for Connectors for
Movable Gas Appliances, ANSI Z21.69 (in U.S.A.), or, if appli-
cable, Connectors for Movable Gas Appliances, CAN/CGA-6.16
(in Canada), as well as a quick-disconnect device that com-