Roberts Gorden CRV-B-9 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 90707501K) 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 Corayvac Modulating Controls Control MethodsRoberts Gordon System Control Roberts Gordon UltravacSpst Transformer Relay Kit P/N 90417600K Analog Signal Modulating ThermostatMS/TP Wiring Pressure SwitchPressurized Systems AIR Supply SystemPressurized Non-PressurizedBlower P/N 90707501K Performance 112 Flow Units Pipe sizingDuct Design Rules Sample Layout for Pressurized Outside Air Systems Roberts Gordon Ultravac Design Requirements CRV-SERIES Equipment Specifications
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CRV-B-9 specifications

The Roberts Gordon CRV-B-9 is a state-of-the-art infrared radiant heater designed for industrial and commercial heating applications. Renowned for its efficiency and effectiveness, the CRV-B-9 represents a significant advancement in the world of space heating solutions.

One of the main features of the CRV-B-9 is its advanced infrared technology, which allows for precise heating without the necessity of warming the entire space. This targeted heating provides immediate comfort, as it directly warms objects and people rather than the air around them, making it particularly effective in large warehouses, manufacturing facilities, and retail spaces.

The heater boasts an impressive output of up to 80,000 BTUs, making it suitable for a wide range of applications. It utilizes natural gas as fuel, which contributes to its efficiency and cost-effectiveness. With a robust design and durable construction, the CRV-B-9 is built to withstand the rigors of industrial environments while ensuring a long product lifespan.

Another significant characteristic of the CRV-B-9 is its ability to integrate with advanced control systems. This includes compatibility with programmable thermostats and energy management systems, allowing for optimized temperature control and reduced energy consumption. The heater can be adjusted to suit different operational needs, making it a flexible solution for various heating scenarios.

The CRV-B-9 also features a compact design, allowing for easy installation in a variety of spaces. Its low-profile shape and modular capability enable users to arrange multiple units to achieve the desired heating coverage without compromising floor space, a crucial aspect for busy, high-traffic areas.

Safety is a priority with the CRV-B-9, which is equipped with various safety features such as a flame safety cutoff switch and over-temperature protection. These mechanisms ensure safe operation, providing peace of mind for users in demanding environments.

In summary, the Roberts Gordon CRV-B-9 infrared radiant heater stands out for its innovative technology, impressive output, energy efficiency, and safety features. Its flexibility and robust design make it an ideal choice for businesses looking to enhance comfort while minimizing energy costs. Whether in a manufacturing plant or a retail outlet, the CRV-B-9 provides a reliable and effective heating solution.
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