Roberts Gorden CRV-B-2, CRV-B-8, CRV-B-6, CRV-B-4 service manual CRV-SERIES Equipment Specifications

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CRV-SERIES DESIGN MANUAL

SECTION 11: CRV-SERIES EQUIPMENT SPECIFICATIONS

The total heating system supplied shall be design cer- tified by the CSA International per American National Standard ANSI Z83.20/CSA 2.34 (latest edition).

11.1 Burner and Burner Controls

11.1.1Burners shall be designed to operate simulta- neously in series without adverse effects from com- bustion gases from upstream burners.

11.1.2Burners shall be capable of firing on:

Natural Gas, or LP Gas.

11.1.3Burners shall be supplied to fire at any one of the input firing rates as specified:

CRV-B-2-20,000 (Btu/h)

CRV-B-4-40,000 (Btu/h)

CRV-B-6-60,000 (Btu/h)

CRV-B-8-80,000 (Btu/h)

CRV-B-9-90,000 (Btu/h)

CRV-B-10-100,000 (Btu/h)

CRV-B-12A-110,000 (Btu/h)

CRV-B-12-120,000 (Btu/h)

When using ROBERTS GORDON® ULTRAVAC™ con- trols, burner rates will modulate between 60% and 100% rated input (CRV-B-2 and CRV-B-4 are not avail- able for use with ROBERTS GORDON® ULTRAVAC™ controls).

11.1.4The design of burners supplied shall provide for maintaining a constant proportion of fuel gas to fil- tered combustion air. These conditions are met for burners in which the pressure of both the fuel gas and the combustion air are introduced at zero (atmo- spheric) pressure and the flow of each is established by a vacuum on the downstream side of the flow metering orifices.

11.1.5To assure a high degree of fail-safe operation, the design shall preclude flow of gas if any or all of the following abnormal conditions occur in the non- firing mode:

1.Main valve fails in open position.

2.Vacuum pump motor fails to operate.

3.Power fails.

11.1.6To further assure a high degree of safety, the system will be under negative pressure at all times during operation to preclude the possibility of the escape of combustion gases inside the building.

11.1.7The burner control assembly will include a zero regulator.

11.1.8All burners shall be pre-wired with a grounded electrical cord and plug.

11.2Equipment 11.2.1 Burner

Each burner assembly shall consist of heavy-duty cast-iron burner heads, pre-wired gas controls with electronic, three-try direct spark ignition and combus- tion air filter.

11.2.2 Pump

The pump model supplied will vary with the capacity of the system. See the pump technical specification sheet or the installation, operation and service manual for product description and specification.

The pump shall be acoustically isolated from the sys- tem with a flexible connector with temperature rating of 350°F minimum. The motor in the vacuum pump shall be secured with rubber mounts for acoustical isolation.

11.2.3 Heat Exchanger

Radiant tubing (between burners and 10’ - 70’ down- stream of last burner) shall be of 4" O.D. steel or heat treated aluminized tubing.

As an option, the balance of the tubing shall be 4" O.D. steel tubing with an internal and external coating of acid-resistant porcelain.

All heat exchanger (tubing) connections shall be made with stainless steel coupling assemblies. Standard couplings will be used in radiant sections. Lined cou- plings will be used in tailpipe sections.

11.2.4 Outside Air

When specified, in contaminated environments, the system shall be capable of supplying air from the out- side to each burner and end vent for the support of combustion.

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Contents Design Manual Page Roberts-Gordon LLC Page Table of Figures Page Concept Zero Regulator SafetyCRV-SERIES System Assembly Overview Two Branch System Shown Fuel Savings and Comfort Clearances to combustibles at all times for safety Standard Reflector ONE Side ReflectorUniversal SHIELD, Position Foot Deco Grille Sizing and Design Considerations Radiant Adjustment to Heat LossRadiant Height Adjustment Factor ExampleRadiant Distribution Average Coverage Selecting the BurnersRadiant Distribution Radiant Distribution Increased Coverage= mounting height Flow Loading Radiant Branch FlowBurner Flow Units Pump Exhaust Length Requirements Pump CapacityTailpipe Flow Minimum Radiant Tube Length Radiant Tube and TailpipeRadiant Tube Length Maximum Radiant Tube LengthCRV-Series Design Methods Design ParametersPump Model Series Maximum Loading Flow Units Per BranchAfter Each Burner Allowable Tailpipe Lengths Burner ModelSystem with EP-300 Series Pump Tailpipe Design MethodRule of Thumb Unshared Calculations To Calculate the Total System TailpipeDamper Couplings Possible Damper Coupling Locations Example CRV-SERIES System Layouts Example System Layout Option12 m 10 3 m 20 6 m 12 m Tailpipe 10 3 m 100 30 m Example System Layout Option 7, 8 Roberts Gordon Ultravac Control MethodsRoberts Gordon System Control P/N Pressure Switch Non-Pressurized AIR Supply SystemPressurized Pressurized SystemsBlower P/N 90707501 Performance 112 Flow Units Pipe sizingDuct Design Rules Sample Layout for Pressurized Outside Air Systems Roberts Gordon Ultravac Design Requirements CRV-SERIES Equipment Specifications Page Maintain Clearance Side Clearance below
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CRV-B-4, CRV-B-2, CRV-B-6, CRV-B-8 specifications

Roberts Gorden is renowned for its innovative heating solutions, particularly the CRV series of infrared radiant heaters, which include models CRV-B-2, CRV-B-4, CRV-B-6, and CRV-B-8. These heaters are designed to provide effective and efficient heating, making them ideal for various industrial, commercial, and agricultural applications.

One of the standout features of the Roberts Gorden CRV series is its advanced infrared heating technology. Unlike conventional heating systems that heat the air, infrared heaters warm objects and people directly, allowing for a more energy-efficient and comfortable environment. This makes the CRV series particularly effective in large spaces, such as warehouses, manufacturing facilities, and greenhouses.

The CRV-B models are engineered for versatility and can be mounted in various configurations, including horizontal and vertical placements, providing installation flexibility. Each model is available in different sizes and heating outputs, ensuring that users can select a unit tailored to their specific heating requirements. The CRV-B-2, for instance, is ideal for smaller spaces, while the CRV-B-8 offers higher power for larger areas.

Moreover, these heaters come equipped with advanced control systems that allow for precise temperature regulation. The units can be integrated with building management systems, enabling users to monitor and adjust settings remotely. This feature not only enhances comfort but also contributes to energy savings, as the heaters can be programmed to operate only during necessary hours.

Structural durability is another significant characteristic of the CRV series. Constructed with high-quality materials, the heaters are designed to withstand the rigors of industrial environments while maintaining optimal performance over time. The reflective surfaces enhance heat distribution, ensuring that warmth is evenly distributed throughout the space.

Safety is paramount with Roberts Gorden’s CRV heaters. They are designed with built-in safety mechanisms, including overheat protection and automatic shut-off features to prevent accidents.

Overall, the Roberts Gorden CRV-B-2, CRV-B-4, CRV-B-6, and CRV-B-8 models exemplify cutting-edge infrared heating technology, delivering effective, efficient, and reliable heating solutions tailored to diverse applications. With a combination of flexibility, advanced control capabilities, and safety features, these heaters are an excellent choice for anyone in need of powerful heating solutions.
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