Manuals
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Roberts Gorden
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Household Appliance
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Gas Heater
Roberts Gorden
CRV-B-8, CRV-B-6, CRV-B-2, CRV-B-4 service manual
Models:
CRV-B-4
CRV-B-2
CRV-B-6
CRV-B-8
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4
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40 pages
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Specs
Maintenance
Radiant Adjustment to Heat Loss
Safety
Pressure Switch
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Contents
Design Manual
CoRayVac
Gas-Fired, Low-Intensity
Custom Engineered
Page
TABLE OF CONTENTS
2009 Roberts-GordonLLC
Page
TABLE OF FIGURES
LIST OF TABLES
Page
SECTION 1 CONCEPT
SECTION 2 THE CRV-SERIESSYSTEM
2.1 Safety
2.2 Zero Regulator
1. Radiant tubing between burners, and 20-50 6-15m downstream of the last burner is normally hot rolled steel or heat-treatedaluminized steel. All tailpipe tubing must be por- celain coated steel or heat-treatedaluminized steel
2.3 Fuel Savings and Comfort
Fire Hazard
clearances to combustibles at all times for safety
FIGURE 2 STANDARD REFLECTOR
inches
centimeters
FIGURE 3 ONE SIDE REFLECTOR
FIGURE 5 UNIVERSAL SHIELD, POSITION
inches
centimeters
inches
FIGURE 8 2-FOOTDECO GRILLE
FIGURE 9 BARRIER SHIELD
FIGURE 10 PROTECTIVE GRILLE
inches
4.2 Radiant Height Adjustment Factor
4.1 Radiant Adjustment to Heat Loss
SECTION 4 SIZING AND DESIGN CONSIDERATIONS
4.3 Selecting the Burners
4.4 Radiant Distribution
4.4.1 Radiant Distribution Average Coverage
4.4.2 Radiant Distribution Increased Coverage
FIGURE 11 Radiant Distribution Average Coverage
FIGURE 13 Radiant Distribution Heavy Coverage
SECTION 5 FLOW LOADING
5.1 Radiant Branch Flow
FIGURE 14 Burner Flow Units
B-10Burner #1
B-10Burner #2
B-10Burner #3
5.2 Pump Capacity
5.3 Tailpipe Flow
FIGURE 15 Vacuum Loss Curve for 4 Shared
Tailpipe
SECTION 6 RADIANT TUBE AND TAILPIPE
6.1 Radiant Tube Length
6.1.1 Minimum Radiant Tube Length
6.1.2 Maximum Radiant Tube Length
FIGURE 16 Tube Length vs. Efficiency
6.3 Design Parameters
Pump Model Series Maximum Loading
6.4CRV-SeriesDesign Methods
After Each Burner
EXAMPLE 3 B-10Radiant Tube vs. Tailpipe Length
6.5 Tailpipe Design Method
6.5.1 Rule of Thumb Unshared Calculations
System with EP-300Series Pump
6.5.5 Damper Couplings
FIGURE 17 Possible Damper Coupling Locations
FIGURE 18 Example System Layout Option
SECTION 7 EXAMPLE CRV-SERIESSYSTEM LAYOUTS
7.1 Example System Layout Option
FIGURE 19 Example System Layout Option
7.2 Example System Layout Option
FIGURE 20 Example System Layout Option
7.3 Example System Layout Option
FIGURE 21 Example System Layout Option
FIGURE 22 Example System Layout Option
7.4 Example System Layout Option
7.5 Example System Layout Option
FIGURE 23 Example System Layout Option
7.6 Example System Layout Option
FIGURE 24 Example System Layout Option
FIGURE 25 Example System Layout Option
FIGURE 26 Example System Layout Option
7.7 Example System Layout Option 7, 8 and
Disconnect electric before service or maintenance
Turn off gas supply to heater before service
SECTION 8 CONTROL METHODS
Electrical Shock Hazard
8.3 SPST Transformer Relay P/N 90417600K
8.5 Pressure Switch
8.4 DPST Transformer Relay P/N
SECTION 9 AIR SUPPLY SYSTEM
9.1 Pressurized
9.2 Non-Pressurized
9.3.2 Pressurized Systems
9.3.3 Pipe sizing
Duct Design Rules
Blower P/N 90707501 Performance 112 Flow Units
FIGURE 28 Outside Air Blower
Branch B
Branch A
Branch C
Page
SECTION 11 CRV-SERIESEQUIPMENT SPECIFICATIONS
11.1 Burner and Burner Controls
11.2Equipment 11.2.1 Burner
11.2.2 Pump
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Maintain
clearance
the side
clearance below
