Middleby Marshall PS300F If incoming pressure is over 14 W.C mbar, a sepa, Gas Meter, Gas Line

Page 15

 

SECTION 2 - INSTALLATION

 

IX. GAS SUPPLY (gas ovens only)

 

 

 

 

 

CAUTION

3. If incoming pressure is over 14” W.C. (35mbar), a sepa-

 

DURINGPRESSURETESTINGNOTEONEOFTHEFOLLOWING:

rate regulator MUST be installed in the line BEFORE the

 

1. The oven and its individual shutoff valve must be discon-

individual shutoff valve for the oven.

 

 

 

nected from the gas supply piping system during any pres-

WARNING: To prevent damage to the control valve regula-

ENGLISH

sure testing of that system at test pressure in excess of 1/

tor during initial turn- on of gas, it is very important to open

 

2 psi (3.45 kPa).

the manual shutoff valve very slowly.

 

2. The oven must be isolated from the gas supply piping

After the initial gas turn-on, the manual shutoff valve must

 

system by closing its individual manual shutoff valve during

remain open except during pressure testing as outlined in

 

any pressure testing of the gas supply piping system at test

the above steps or when necessary during service mainte-

 

pressure equal to or less than 1/2 psi (3.45 kPa).

nance.

 

 

 

 

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" (50.8mm) pipe for natural gas

•1-1/2" (38.1mm) 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 (Figure 2-23) and in the Gas Orifice and Pressure Specifications table (Page 5 of this manual).

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 2-25; 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 2-26.

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 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.

WARNING

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 2-26 - Gas Burner and Piping Assembly

 

 

 

Model PS360EWB Only

 

Manifold pressure tap

Burner

Modulating gas valve

 

(where manifold gas

Blower

 

pressure is measured)

 

NOTE: PS360EWB ovens use a

 

 

 

modulating gas valve INSTEAD OF

 

 

 

a high flame solenoid valve and

 

 

 

low-flame bypass line.

Inlet pressure tap

On/Off Knob

 

 

Always leave in

 

 

(where incoming

“ON” position

Gas Burner

 

gas pressure is

 

 

 

measured)

High Flame

Pilot pressure tap

 

 

 

 

Solenoid Valve

(where pilot gas

 

 

Combination Gas

pressure is measured)

 

 

 

 

 

Control Valve

 

 

 

(Safety Regulator)

 

 

Manual

 

Low Flame

 

shutoff valve

 

Bypass Line

 

15

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Contents Owners Operating English Table of Contents Not Shown III Oven SpecificationsOven Uses Conveyor Drive Motor Moves the conveyorGeneral specifications per oven cavity Installation 811 Installation KITInstallation kit components one kit required per cavity Additional installation kit components for gas ovensOther ventilation concerns II. Ventilation SystemRequirements RecommendationsStands III. AssemblyIV. Thermocouple Installation StackingBe pre-mounted to Either of the oven Cavities Tandem Oven AssemblyOven Positioning and Alignment Leftoven RightovenFrame of the right oven, pointing outward as shown Push the ovens together. Check that the mounting boltsReplace the rear axial cooling fans. See Figure VI. Conveyor Installation InstallingtheConveyor-AllovensEXCEPTTandem modelsLift the conveyor and position it in the oven as shown Conveyor Frame VII. Final AssemblyInstalling the Conveyor and Belt Tandem oven models Link Orientation Tandem Oven Heavy-DutyAdditional Information Electric Ovens Additional Information Gas OvensConnection Gas Line DuringpressuretestingnoteoneofthefollowingIf incoming pressure is over 14 W.C mbar, a sepa Gas MeterLocation and Description of Controls Display, and wait for DailystartupprocedureDailyshutdownprocedure II. Normal Operation STEP-BY-STEPActual Temp III. Quick Reference Digital Temperature ControllerOven will not heat Controls may be set incor Rectly Quick Reference TroubleshootingMaintenance Cooling Fan/Vent Locations PS360EWB Maintenance DailyRemoving Air Fingers and Plates II. Maintenance MonthlySplit Belt Idler Shaft Additional Key Spare Parts Kit components for gas ovens Key Spare Parts Kit components all ovens

PS300F specifications

The Middleby Marshall PS300F is an advanced pizza oven designed for high-volume operations while ensuring consistent quality and superior performance. This innovative oven combines cutting-edge technology with user-friendly features, making it an ideal choice for restaurants, pizzerias, and foodservice operations that demand efficiency and speed.

One of the standout features of the PS300F is its patented airflow technology. This system is designed to circulate hot air evenly throughout the cooking chamber, which helps create a perfectly baked pizza with a crispy crust and thoroughly cooked toppings. The even heat distribution ensures that every inch of the pizza receives the same level of cooking, reducing the chances of hot or cold spots that can affect the overall quality.

The PS300F is equipped with a double-deck design, allowing for increased production capacity without requiring additional floor space. Each deck can accommodate multiple pizzas at once, making it an ideal choice for busy establishments where speed is crucial. Operators can load pizzas into both decks simultaneously, significantly reducing cooking times during peak hours.

Another key characteristic of the PS300F is its digital control panel. This user-friendly interface allows operators to set precise cooking times and temperatures, ensuring optimal results every time. The oven also features programmable settings, enabling users to save specific cooking parameters for different types of pizzas, simplifying the process during high-volume service.

Energy efficiency is another important consideration in the design of the PS300F. The oven is constructed with high-quality insulation to minimize heat loss, contributing to lower energy consumption. This makes it not only an environmentally friendly option but also a cost-effective choice for businesses looking to reduce their utility bills.

Durability is a hallmark of the Middleby Marshall brand, and the PS300F exemplifies this commitment to quality. Built with robust materials and designed to withstand the rigors of a busy kitchen, this oven promises longevity and reliable performance.

In conclusion, the Middleby Marshall PS300F is a top-tier pizza oven that brings together innovative technology, efficiency, and durability. Its advanced features make it an excellent investment for any foodservice operation focused on delivering high-quality pizzas in a fast-paced environment. With its combination of performance and ease of use, the PS300F is poised to enhance any culinary experience.
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