A. Connection
Check the oven’s gas supply requirements before making the gas utility connection. Gas supply requirement are listed on the oven’s serial plate and in Table
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
Inlet, regulated, and pilot gas pressure readings can be takenusingadigitaltubemanometeratthetaplocationshown in Figure
NOTE: The installation must conform with local codes or in the absence of local codes, with the National Fuel Gas Code, ANSI
1/2″ gas pipe nipple
1/2″ gas line
tee with
pressure tap
Quick-
disconnect
device
SECTION 2
INSTALLATION
| ||
gas pipe | To Gas | |
reducer | ||
Supply | ||
| ||
| Pipe | |
3/4″ gas |
| |
pipe nipple |
| |
90° |
| |
Elbow |
|
Gas
Shutoff
Valve
Flexible | Individual gas | |
connection for | ||
Gas Hose | ||
each oven | ||
| ||
| cavity |
Certain safety code requirements exist for the installation of gas ovens;refertothebeginningofSection2foralistoftheinstallation standards.Inaddition,becausetheovenisequippedwithcasters, 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.), as well as a
B.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 Gas Conversion Kit for the specific oven model.
CAUTION: The terms of the oven’s warranty require all start- ups,conversionsandserviceworktobeperformed by a Middleby Authorized Service Agent.
C.PS540 Propane Conversion
Two items have to be changed, to change the oven to LP:
1.Replace main orifice.
2.Adjust main gas regulator per instructions below.
Disconnect the manifold union closest to the main burner, and remove the manifold assembly. Replace the main orifice.
Replace the main orifice on the manifold assemblies with the LP units, and replace the manifold assembly.
D.Adjusting the Maximum Pressure Setting
1.Disconnect pressure feedback connection (if appcable).
2.Connectasuitablepressuregaugetopipelineortooutletpressure tap of gas control concerned, to measure burner pressure (mea- suring point must be as near to burner as possible).
Figure 2-13. Flexible Gas Hose Installation
Figure 2-14. Gas Burner Assembly
3.Make sure that the appliance is in operation and the Moduplus® coil is energized with maximum current.
4.If maximum rate pressure needs adjustment, use an 8 mm wrench to turn adjustment screw for maximum pressure setting (clockwise to increase or
5.Disconnect electrical connection of the Moduplus®.
6.Check minimum pressure setting and readjust if neces- sary. (See Adjusting Minimum Pressure Setting for proper adjusting procedure.)
7.Reconnect pressure feedback connection (if appcable).
8.If minimum and maximum pressures are set, wire the Moduplus® in circuit.
9.Close pressure tap screw.
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