Roberts Gorden CRV-B-6, CRV-B-8, CRV-B-2, CRV-B-4 service manual Pressure Switch

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SECTION 8: CONTROL METHODS

Buildings today demand all sorts of control options based on the user’s preference. ULTRAVAC™ controls offer a host of communication options for integration with controls’ networks to best serve individual needs:

BACnet®: Interface ULTRAVAC™ with other building management control platforms with our BACnet option.

TCP/IP (LAN): Connect to ULTRAVAC™ via your local area network of computers. Load ULTRAVAC™ software onto any computer on the network and control and view your heating system from your computer.

MODEM: Dial into ULTRAVAC™ from anywhere in the world via modem. Supplied as standard on all central controllers!

RS-485:Hard wire ULTRAVAC™ directly to your computer.

There are references in this manual to various trademarks. All trademarks mentioned herein, whether registered or not, are the property of their respective owners. Roberts-Gordon is not sponsored by or affiliated with any of the trademark or registered trademark owners, and make no representations about them, their owners, their products or services.

Roberts-Gordon LLC is not sponsored by or affiliated with BACnet®.

indication of operating conditions. The transformer relay wiring diagram is shown in the CORAYVAC® Installation, Operation and Service Manual (P/N 127102NA).

8.5 Pressure Switch

A pressure switch is required to confirm pump opera- tion on all systems.

A pressure switch is also required on the inlet duct of a non-pressurized air supply.

8.3 SPST Transformer Relay (P/N 90417600K)

The transformer relay can be used to control an EP- 100 or EP-201 pump CORAYVAC® system. The single pole relay can only be used to control one zone of burners. The electrical circuit is a 120 V AC (20 A) supply. The transformer 24 V AC output for the ther- mostat is rated at 40 V A. Thermostats used with the transformer must not exceed this power requirement. A transformer relay operated system will not give any post purge pump operation to completely exhaust products of combustion from the system or provide indication of operating conditions. The transformer relay wiring diagram is shown in the CORAYVAC® Installation, Operation and Service Manual (P/N 127102NA).

8.4 DPST Transformer Relay (P/N 90436300)

The transformer relay can be used to control an EP- 100 or EP-201 pump CORAYVAC® system. The double pole relay can only be used to control two zones of burners. The electrical circuit is a 120 V AC (20A) sup- ply. The transformer 24 V AC output for the thermostat is rated at 40 VA. Thermostats used with the trans- former must not exceed this power requirement. A transformer relay operated system will not give any post purge pump operation to completely exhaust products of combustion from the system or provide

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Contents Design Manual Page Roberts-Gordon LLC Page Table of Figures Page Concept Safety CRV-SERIES SystemZero Regulator Assembly Overview Two Branch System Shown Fuel Savings and Comfort Clearances to combustibles at all times for safety ONE Side Reflector Standard ReflectorUniversal SHIELD, Position Foot Deco Grille Radiant Height Adjustment Factor Radiant Adjustment to Heat LossSizing and Design Considerations ExampleRadiant Distribution Selecting the BurnersRadiant Distribution Average Coverage Radiant Distribution Increased Coverage= mounting height Radiant Branch Flow Flow LoadingBurner Flow Units Pump Capacity Tailpipe FlowPump Exhaust Length Requirements Radiant Tube Length Radiant Tube and TailpipeMinimum Radiant Tube Length Maximum Radiant Tube LengthPump Model Series Maximum Loading Design ParametersCRV-Series Design Methods Flow Units Per BranchAllowable Tailpipe Lengths Burner Model After Each BurnerRule of Thumb Unshared Calculations Tailpipe Design MethodSystem with EP-300 Series Pump To Calculate the Total System TailpipeDamper Couplings Possible Damper Coupling Locations Example System Layout Option Example CRV-SERIES System Layouts12 m 10 3 m 20 6 m 12 m Tailpipe 10 3 m 100 30 m Example System Layout Option 7, 8 Control Methods Roberts Gordon System Control P/NRoberts Gordon Ultravac Pressure Switch Pressurized AIR Supply SystemNon-Pressurized Pressurized SystemsPipe sizing Duct Design RulesBlower P/N 90707501 Performance 112 Flow Units 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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