Middleby Marshall PS314SBI, Owner'S Operating And Installation Manual

11

ENGLISH

Figure 2-17 - Utility Connection Locations

Figure 2-18 -

Flexible Gas Hose

Installation

Appliance

Connection/Male

Nipple

Flexible

Gas Hose

Full-Flow Gas

Shutoff Valve

To Gas

Supply Pipe

90°

Elbow

Serial plate location

VII. ELECTRICAL SUPPLY (all ovens)

WARNING

Authorized supplier personnel normally accomplish

the connections for the ventilation system, electric supply,

and gas supply, as arranged by the customer.  Following

these connections, the factory-authorized installer can

perform the initial startup of the oven.

NOTE: 

The electric supply installation must satisfy the

requirements of the appropriate statutory authority, such as the

National Electrical Code (NEC), ANSI/NFPA70, (U.S.A.); the

Canadian Electrical Code, CSA C22.2; the Australian Code

AG601; or other applicable regulations.

NOTE: 

 The electric supply connection must meet all national

and local electrical code requirements.

NOTE: 

 It may be necessary to temporarily remove the rear cool

panels to connect the electrical supply.

Check the oven serial plate before making any electric supply

connections. Electric supply connections must agree with data

on the oven serial plate.  The location of the serial plate is shown

in Figure 2-16.

A fused disconnect switch or a main circuit breaker (customer

furnished) MUST be installed in the electric supply line for each

oven cavity.  It is recommended that this switch/circuit breaker

have lockout/tagout capability.

The supply conductors must be of the size and material (cop-

per) recommended.  Refer to the wiring diagram inside the

machinery compartment or control compartment of the oven.

Electrical specifications are also listed on the oven's serial

plate (Figure 2-16) and in the Electrical Specifications tables

(on Pages 4-5).

The oven requires a ground connection to the oven ground

screw located in the electrical junction box.  (The box is shown

in Figure 2-17.)  If necessary, have the electrician supply the

ground wire. 

 Do NOT use the wiring conduit or other piping for

ground connections!

CAUTION

Before connecting incoming power to the oven, measure the

voltage of each input leg to neutral.  The expected voltage is

approximately 120V.  ANY voltage reading exceeding 130V

indicates that the supply has a “high” leg.  CONNECTING A

“HIGH” LEG TO THE OVEN VOIDS ALL OVEN WARRANTIES.

Connecting a “high” leg to the black lead of the oven can

severely damage the oven’s electrical and electronic

components.

CAUTION

DO NOT CONNECT BLACK WIRE TO HIGH LEG.

VOLTAGE OF THE BLACK AND WHITE WIRES MUST

BE NO HIGHER THAN 130 VAC.

A. Additional Information - Electric Ovens

For electric ovens, a 1-1/4" (32mm) dia. cutout in the back

wall of the machinery compartment provides access for the

electrical supply connections.  See Figure 2-17.  Using

flexible cables for the electric power supply conductors

requires a 1-1/4" (32mm) strain-relief fitting (not furnished

with the oven) to enable safe access to the terminal block

from which power is distributed to the oven.

B. Additional Information - Gas Ovens

All gas oven electric supply connections are made via the

electrical junction box on the rear of the oven, shown in

Figure 2-17.  The power lines then connect to the oven

circuits through the Machinery Compartment Access Panel

Safety Switch.  This switch interrupts electric power to the

oven when the Machinery Compartment Access Panel is

opened.

C. Additional Information - Ovens with External Transform-

ers (export versions)

Position the transformer on the rear wall of the oven, on the

same side as the control compartment, as space permits.

Fasten it in place using the supplied mounting hardware.

D. Connection

Refer to the wiring diagram inside the machinery

compartment or control compartment of the oven to

determine the correct connections for the electrical supply

lines.  Connect the supply as indicated on the wiring

diagram.  Be sure to connect the electrical supply ground

wire to the oven ground screw located in the junction box on

the rear of the oven.

Figure 2-16 - Oven Serial Plate

Gas oven

Electric oven

Electrical

junction box

1-1/4" (32mm) conduit for

electric utility connection

3/4" (19mm)

pipe for

gas utility

connection

Rear cool

panel

Rear wall

of oven

SECTION 2 - INSTALLATION

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