SECTION 2 - INSTALLATION

A.Gas Utility Rough-In Recommendations

The following gas system specifications are STRONGLY RECOMMENDED. Deviating from these recommendations may affect the baking performance of the oven.

Gas Meter

One or two oven cavities: 750 cfh meter

Three or four oven cavities: 1200 cfh meter

Gas Line

DEDICATED LINE from the gas meter to the oven

2-1/2" (63.5mm) pipe for natural gas

2" (50.8mm) pipe for propane

Maximum length: 200' (61m). Each 90° elbow equals 7' (2.13m) of pipe.

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.

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 2-14; however, compliance with the applicable standards and regulations is mandatory.

Certain safety code requirements exist for the installation of gas ovens; refer to the beginning of this Section 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 complies 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, conversions and service work to be performed by a Middleby Marshall Authorized Service Agent.

Figure 2-14 - Flexible Gas Hose Installation

Inlet, regulated, and pilot gas pressure readings can be taken using a “U” tube manometer at the tap locations shown in Figure 2-15.

NOTE

In the USA, the installation must conform with local codes, or in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1.

In Canada, the installation must conform with local codes, or in the absence of local codes, with the Natural Gas Installation Code, CAN/CGA-B 149.1, or the Propane Installation Code, CAN/CGA-B 149.2, as applicable.

In Australia, the installation must conform with AGA Code AG601 and with any requirements of the appropriate statutory authority.

To Gas

Supply Pipe

Full-Flow

Gas

Shutoff

Valve

90°

Elbow

Flexible

Gas Hose

Union OR quick-

disconnect device

54" 90°

(1372mm) Elbow gas pipe

Figure 2-15 - Gas Burner and Piping Assembly

Inlet pressure

Manifold

 

 

 

pressure tap

 

 

 

tap (where

 

 

 

(where manifold

Cap for top

 

 

incoming gas

 

Burner

gas pressure is

oven cavity

 

pressure is

measured)

 

 

Blower

measured)

 

 

 

 

 

 

 

 

Gas Burner

 

 

 

Modulating

 

 

 

 

gas valve

 

On/Off Knob

 

Manual

 

 

 

shutoff

 

 

Always leave in

 

 

 

 

valve

 

 

“ON” position

 

 

 

 

 

 

 

Gas line for

 

 

 

 

other oven

 

 

 

 

cavities

 

 

 

 

 

 

 

 

Pilot pressure tap

 

 

 

 

(where pilot gas

 

 

 

 

pressure is

Nipple, 1-1/4”

 

 

Combination Gas

measured)

 

 

 

dia. X 3”

 

Elbow, 90°,

Control Valve

 

(76mm) L, NPT

 

1-1/4” dia.

(Safety Regulator)

 

12

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Middleby Marshall PS570S installation manual Gas Utility Rough-In Recommendations, Connection, Gas Conversion

PS570S specifications

The Middleby Marshall PS570S is a state-of-the-art conveyor oven that has carved a niche for itself in the fast-paced foodservice industry. Renowned for its remarkable efficiency and versatile cooking capabilities, this oven is an ideal solution for high-volume operations, including pizza shops, restaurants, and other commercial kitchens.

One of the standout features of the PS570S is its advanced cooking technology. The oven incorporates Middleby Marshall’s patented "ShadowBand" technology, which uses a unique heat transfer system that enhances cooking speed and consistency. The design provides optimal heat distribution, ensuring that every item cooked achieves a perfect golden-brown finish while maintaining moisture within the food. This feature is particularly beneficial for products like pizzas, where both crust texture and toppings' freshness are paramount.

The PS570S also boasts an impressive conveyor system that operates at various speeds, allowing operators to customize cooking times based on the specific items being prepared. The oven includes a width-adjustable conveyor belt, catering to a variety of food sizes and types. This flexibility supports an array of menu options, from traditional pizzas to baked goods, ensuring that businesses can meet a diverse range of customer demands.

Moreover, the energy efficiency of the PS570S is notable. The oven utilizes a high-efficiency gas burner system, which significantly reduces energy consumption while maintaining optimal cooking performance. This translates to lower operational costs, making it an attractive choice for budget-conscious establishments looking to maximize their returns.

Another important characteristic is the oven's intuitive digital control system. Operators can easily set cooking times, temperatures, and conveyor speed through an easy-to-navigate interface. The digital controls also allow for programmable recipes, enabling staff to replicate successful dishes with accuracy, thus minimizing waste and maximizing quality.

In terms of maintenance, the PS570S is designed with easy access to internal components, ensuring that cleaning and servicing can be performed quickly and efficiently. The oven's robust construction promises durability, making it a long-term investment for any commercial kitchen.

In summary, the Middleby Marshall PS570S combines advanced heating technology, customizable cooking options, energy efficiency, and user-friendly controls. With its reliability and versatility, it stands out as an essential tool for any operation that prioritizes quality and speed.