Roberts Gorden CRV-B-4, CRV-B-8, CRV-B-6, CRV-B-2 service manual Pipe sizing, Duct Design Rules

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SECTION 9: AIR SUPPLY SYSTEM

9.3.3 Pipe sizing

To size each section of pipe proceed as follows:

•Calculate the required flow units at each outlet of the supply system.

•Measure the longest run of pipe from the blower to the most remote outlet. Use only this distance in Figure 27 (or the next longer distance if the exact distance is not shown). This is to provide assurance that the pressure drop to the most remote outlet will not exceed 0.25" w.c. when all outlets are supplied.

•See Figure 27, find the intersection point on the graph for the appropriate duct length and number of flow units. The duct size above this intersection point indicates what size duct work should be used. Proceed in a similar manner for each outlet and each section of duct. For each section of duct, determine the total flow unit capacity sup- plied by that section.

Duct Design Rules

•System should be designed so that the blower is positioned closest to the highest flow require- ments (end vents).

•When a duct is carrying more than 40 flow units, it must be at least 6" diameter.

Blower (P/N 90707501) Performance 112 Flow

Units:

One outside air blower is required per each EP-100 or EP-200 series pump and two outside air blowers may be required for each EP-300 series pump. Outside air blowers cannot be shared between two separate CRV-Series systems.

FIGURE 28: Outside Air Blower

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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 ONE Side Reflector Standard ReflectorUniversal SHIELD, Position Foot Deco Grille Example Radiant Adjustment to Heat LossRadiant Height Adjustment Factor Sizing and Design ConsiderationsRadiant Distribution Increased Coverage Selecting the BurnersRadiant Distribution Radiant Distribution Average Coverage= mounting height Radiant Branch Flow Flow LoadingBurner Flow Units Pump Exhaust Length Requirements Pump CapacityTailpipe Flow Maximum Radiant Tube Length Radiant Tube and TailpipeRadiant Tube Length Minimum Radiant Tube LengthFlow Units Per Branch Design ParametersPump Model Series Maximum Loading CRV-Series Design MethodsAllowable Tailpipe Lengths Burner Model After Each BurnerTo Calculate the Total System Tailpipe Tailpipe Design MethodRule of Thumb Unshared Calculations System with EP-300 Series PumpDamper 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 Roberts Gordon Ultravac Control MethodsRoberts Gordon System Control P/N Pressure Switch Pressurized Systems AIR Supply SystemPressurized Non-PressurizedBlower 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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