Middleby Marshall PS520 installation manual II. Ventilation Guidelines

SECTION 2

INSTALLATION

UTILITY ROUGH-IN DIMENSIONS AND POSITIONING

FOR PS520-SERIES OVENS

WARNING

DO NOT USE CONDUIT OR GAS LINE

FOR GROUND CONNECTION.

CAUTION

IT IS RECOMMENDED THAT THE OVEN BE PLACED UNDER A VENTILATION HOOD FOR ADEQUATE AIR SUPPLY AND VENTILATION.

ELECTRIC SUPPLY TO BE

PROVIDED BY CUSTOMER

CIRCUITBREAKER

Separate circuit breaker with lockout/tagout electrical shutoff for each oven. Wire each oven separately.

50 Amp circuit breaker for 208-240V, or 30 Amp circuit breaker for 380-480V.

ELECTRICAL SPECIFICATIONS

DOMESTIC: 208V main blower motors and elements, 1 Ph, 39.9 Amp draw, 50/60 Hz, 208-240V control circuit, 2 pole, 3 wire system per oven (2 hot, 1 grd).

Do NOT use conduit for ground.

or

DOMESTIC: 240V main blower motors and elements, 1 Ph, 34.6 Amp draw, 50/60 Hz, 208-240V control circuit, 2 pole, 3 wire system per oven (2 hot, 1 grd).

230V main blower motors and elements, 1 Ph, 33.0 Amp draw, 50/60 Hz, 208-240V control circuit, 2 pole, 3 wire system per oven (2 hot, 1 grd).

Do NOT use conduit for ground.

or

EXPORT: 380V elements, 1 Ph, 23.0 Amp draw, 50/60 Hz, 208-240V control circuit and main blower motor, 4 pole, 4 wire system per oven (2 hot, 1 neutral, 1 grd).

400V elements, 1 Ph, 21.8 Amp draw, 50/60 Hz, 208-240V control circuit and main blower motor, 4 pole, 4 wire system per oven (2 hot, 1 neutral, 1 grd).

Do NOT use conduit for ground.

or

EXPORT: 480V elements, 1 Ph, 17.3 Amp draw, 50/60 Hz, 208-240V control circuit and main blower motor, 2 pole, 4 wire system per oven (2 hot, 1 neutral, 1 grd).

Do NOT use conduit for ground.

Figure 2-9. Typical PS520-Series Oven(s)

Installation

ELECTRICAL RATING

7.6 – 9.2 kW/hr.

SUPPLY WIRE

Supply wire size must be in accordance with the National Electrical Code (current edition) and must be in compli- ance with local codes.

SUGGESTED

If space permits, service should be located near the control console end of the oven(s) to allow convenient access to safety switches.

CAUTION

UNIT MUST HAVE AIR VENT PLATES IN- STALLED OR WARRANTY WILL BE VOID.

II. VENTILATION GUIDELINES

A mechanically driven ventilation system is recommended for thePS520SeriesMiddlebyMarshallconveyorizedelectricovens.

Local codes and conditions vary greatly from one area to another and must be complied with. Following are the suggested requirements for good ventilation. Please re- member these are recommendations or guidelines, you may have a special condition or problem that will require the services of a ventilation engineer or specialist. Proper ventilation is the oven owner’s responsibility. Improper ventilation can inhibit oven performance.

Please Note: There are now two “stand off” ‘C’ Channels

thatmustbeinstalledinthefield(SeeSection6:PARTSLIST, page 44-45 for reference, Item 5).

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