Roberts Gorden CRV-B-8, CRV-B-6, CRV-B-2 Control Methods, Roberts Gordon System Control P/N

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CRV-SERIES DESIGN MANUAL

SECTION 8: CONTROL METHODS

DANGER

Electrical Shock Hazard

Disconnect electric before service or maintenance.

More than one disconnect switch may be required to disconnect electric to the unit.

Control must be properly grounded to an electrical source.

Failure to follow these instructions can result in death or electrical shock.

WARNING

Explosion Hazard

Turn off gas supply to heater before service.

Failure to follow these instructions can result in death, injury or property damage.

There are several methods of controlling CRV-Series systems. The options are as follows:

8.1ROBERTS GORDON® System Control (P/N 02770002)

The ROBERTS GORDON® System Control is an electronic controller designed for the control of CORAYVAC® and VANTAGE® NP (multiburner only) systems.

The System Control is capable of giving four zones of burners' temperature control and power. The control will also give power output to as many as two pumps, provided that the load is not greater than 20 A and 1

Ø.For additional electrical specifications see the System Control Installation, Operation and Service manual (P/N 10091601NA).

Electronic 24 Vac thermostats and mechanical ther- mostats with heat anticipator can be used. The sys- tem control offers a 24 Vac power supply to power electronic thermostats.

Roberts-Gordon offers a selection of low voltage thermostats approved for use with the system control.

A System Control operated system has two minutes post purge pump operation to completely exhaust products of combustion from the system. A system control provides indication of power to the pump and zones and indicates the status of the pressure switch with lights.

The System Control is ETL listed in accordance with UL873 – Standard for Temperature Indicating and Regulating Equipment.

8.2 ROBERTS GORDON® ULTRAVAC™

The ROBERTS GORDON® ULTRAVAC™ is a micro processor based control package designed for modu- lating control of CRV-Series heaters based on outdoor temperatures. The controls offer full modulation between 60% and 100% of system maximum rated input.

This controller is capable of giving control outputs to one pump and three heating zones. The controller also features inputs which are used for indoor and out- door signal condition monitoring.

System status and settings are viewed and altered from a PC (not supplied) running ROBERTS GOR- DON® ULTRAVAC™ Software.

ROBERTS GORDON® ULTRAVAC™ Software requires a PC (not supplied) running Windows® 95 or higher, with a Pentium® class processor and at least 64k of RAM.

Special design requirements apply for CRV-Series systems using the ROBERTS GORDON® ULTRA-

VAC™ Controller, See Page 31, Section 10.

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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 Radiant Adjustment to Heat Loss Radiant Height Adjustment FactorSizing and Design Considerations ExampleSelecting the Burners Radiant DistributionRadiant Distribution Average Coverage Radiant Distribution Increased Coverage= mounting height Flow Loading Radiant Branch FlowBurner Flow Units Pump Exhaust Length Requirements Pump CapacityTailpipe Flow Radiant Tube and Tailpipe Radiant Tube LengthMinimum Radiant Tube Length Maximum Radiant Tube LengthDesign Parameters Pump Model Series Maximum LoadingCRV-Series Design Methods Flow Units Per BranchAfter Each Burner Allowable Tailpipe Lengths Burner ModelTailpipe Design Method Rule of Thumb Unshared CalculationsSystem with EP-300 Series Pump 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 AIR Supply System PressurizedNon-Pressurized 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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