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FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. DO NOT try to light any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your building.
5. Extinguish any open flame.
6. Leave the building.
7. Immediately call your local gas
supplier after leaving the building.
Follow the gas supplier's
instructions.
8. If you cannot reach your gas
supplier, call the Fire Department.
WARNING
Fire Hazard
Keep all flammable objects, liquids and
vapors the minimum required clear-
ances to combustibles away from
heater.
Some objects will catch fire or explode
when placed close to heater.
Failure to follow these instructions can
result in death, injury or property
damage.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or
property damage. Read the Installation, Operation
and Service Manual thoroughly before installing or
servicing this equipment.
Installation must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment or your gas supplier.
© 2018 Roberts-Gordon LLC
Model HED
Gas-Fired, Low Intensity
Unitary Heater
For Harsh Environments
Installation, Operation &
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Keep this manual in a safe place in order to provide
your service technician with necessary information.
Roberts-Gordon LLC
1250 William Street
P.O. Box 44
Buffalo, New York 14240-0044
Telephone: +1.716.852.4400
Fax: +1.716.852.0854
Toll Free: 800.828.7450
www.robertsgordon.com
Service Manual
HED-40
HED-60
HED-80
HED-100
HED-125
HED-150
HED-175
Installer
Owner
P/N 037100NA Rev A 6/18
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Summary of Contents for Roberts Gorden COMPLETE HED Series
- Page 1 FOR YOUR SAFETY If you smell gas: 1. Open windows. 2. DO NOT try to light any appliance. 3. DO NOT use electrical switches. 4. DO NOT use any telephone in Model HED your building. 5. Extinguish any open flame. 6.
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Page 3: Table Of Contents
TABLE OF CONTENTS SECTION 1: Heater Safety............1 10.4 Electrical Connection to the Burner Box Using Line 1.1 Manpower Requirements ..........1 Voltage Thermostat on Control ........ 49 1.2 Safety Labels and Their Placement ......1 10.5 For External Thermostat Connection....... 49 1.3 California Proposition 65 .......... - Page 5 TABLE OF FIGURES Figure 1: Top and Bottom Panel Label Placement ....2 Figure 2: Side and Back Panel Label Placement ...... 3 Figure 13: Major Component Descriptions - Standard Reflector ..............10 Figure 14: Major Component Descriptions - High Efficiency Reflector..............
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Page 7: Section 1: Heater Safety
SECTION 1: H EATER AFETY SECTION 1: HEATER SAFETY 1.1 Manpower Requirements Your Safety is Important to Us! To prevent personal injury and damage to the heater, This symbol is used throughout two persons will be required for installation. the manual to notify you of possi- ble fire, electrical or burn hazards. -
Page 8: Figure 1: Top And Bottom Panel Label Placement
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 1: Top and Bottom Panel Label Placement Description Part Number Logo Label 91013200 Rating Plate Label 91013220 Gas Connection Label 91018122 Vent Length Label 91039500... -
Page 9: Figure 2: Side And Back Panel Label Placement
SECTION 1: H EATER AFETY FIGURE 2: Side and Back Panel Label Placement Description Part Number Rating Plate Label 91010401 Lighting Instruction Plate Label 91029602 Wiring Label 91030308 Clearances to Combustibles Label 91013432 Proposition 65 Label 91070016... -
Page 10: Section 2: Installer Responsibility
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 2: INSTALLER RESPONSIBILITY on the burner and in the Installation, Operation and Service Manual. See Page 5, Figure 3 through Page The installer is responsible for the following: 8, Figure 12. Write the proper clearance dimensions •... -
Page 11: Section 3: Clearances To Combustibles
SECTION 3: C LEARANCES TO OMBUSTIBLES SECTION 3: CLEARANCES TO COMBUSTIBLES WARNING 3.1 Required Clearances to Combustibles Clearances are the required distances that combusti- ble objects must be away from the heater to prevent serious fire hazards. Combustibles are materials that may catch on fire and include common items such as wood, paper, rubber, fabric, etc. - Page 12 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows. 2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect. FIGURE 4: LEVEL SIDE REFLECTOR (inches) (centimeters)
- Page 13 SECTION 3: C LEARANCES TO OMBUSTIBLES NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows. 2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect. FIGURE 7: U-TUBE, LEVEL REFLECTOR (inches) (centimeters)
- Page 14 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows. 2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect. FIGURE 10: 2-FOOT DECO GRILLE AND PROTECTIVE GRILLE (inches) (centimeters)
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Page 15: Section 4: National Standards And Applicable Codes
SECTION 4: N ATIONAL TANDARDS AND PPLICABLE ODES SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES 4.1 Gas Codes 4.3 Public Garages The type of gas appearing on the nameplate Installation in garages must be in accordance must be the type of gas used. Installation must with the following codes: comply with national and local codes and United States: Refer to Standard for Parking... -
Page 16: Section 5: Major Components
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 5: MAJOR COMPONENTS FIGURE 13: Major Component Descriptions - Standard Reflector Burner with Tube Standard Gasket Reflector Must be installed with (Aluminum or the flame observation Stainless window facing down. Steel) Alternate overlap as shown on overview and on Page 19, Figure 18. -
Page 17: Figure 14: Major Component Descriptions - High Efficiency Reflector
SECTION 5: M AJOR OMPONENTS FIGURE 14: Major Component Descriptions - High Efficiency Reflector Burner with Tube High Efficiency Reflector (Aluminum) Gasket Must be installed with Alternate overlap as the flame observation window facing down. shown on overview on Page 19, Figure 18. Minimum overlap is 6"... -
Page 18: Standard Parts List
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 5.1 Standard Parts List Table 1: Contents of the Burner Carton Part No. Description HED-40 HED-60 HED-80 HED- HED-125 HED-150 HED-175 037XXXXX Burner Assembly (Rate and Fuel Varies) 92700025 Gasket (Burner to Burner Tube) 037100NA Installation, Operation and Service Manual 03700009 Combustion Air Weather Vent 92113900 Hex Head Nuts 5/16"... - Page 19 SECTION 5: M AJOR OMPONENTS Table 3: Contents of High Efficiency Core and Extension Packages Core Packages Extension Packages Aluminized with Aluminized with Aluminum Aluminum Reflector Reflector Part No. Description (3 m) (6 m) (9 m) (12 m) (3 m) (6 m) (9 m) (1 2m)
- Page 20 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Table 4: Component Package Guide Tubing Length Standard Core Packages Model Minimum Hot Rolled Steel Aluminized HED-40 10’ (3m) CPST10ALUM CPST10ALUMSS HED-60 20’ (6m) CPST20ALUM CPST20ALUMSS HED-80 20’ (6m) CPST20ALUM CPST20ALUMSS HED-100 30’ (9m) CPST30ALUM CPST30ALUMSS HED-125...
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Page 21: Section 6: Heater Installation
SECTION 6: H EATER NSTALLATION SECTION 6: HEATER INSTALLATION Typical installation configurations are shown in Figure 15. WARNING Expansion and contraction of the tube dictates that the minimum suspension lengths in the table on Page 16, Figure 15 be maintained. Severe Injury Hazard Secure burner to burner tube with nuts and lockwashers. -
Page 22: Figure 15: Critical Hanger Placement
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 15: Critical Hanger Placement Description Part Number Run Length Typical Expansion Minimum “X” Length S-Hook 91907302 10' (3 m) - 50' (15 m) ±1" (3 cm) 12" (305 mm) Tube/Reflector Hanger 030901XX 51' (15 m) - 60' (18 m) ±2"... -
Page 23: Outdoor Mounting
SECTION 6: H EATER NSTALLATION 6.1 Outdoor Mounting may be parked within the clearances to combustibles. See Page 17 , Figure 16. The heater is meant for stationary mounting in all sit- uations and should not be suspended from any struc- The bottom of the combustion air inlet shall not be ture which may become mobile or from any organic less than 12"... -
Page 24: Figure 17: Linear Heater Assembly Overview
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 17: Linear Heater Assembly Overview... -
Page 25: Figure 18: Linear Heater Layout Overview
SECTION 6: H EATER NSTALLATION FIGURE 18: Linear Heater Layout Overview... -
Page 26: Figure 19: Linear Heater Layout Overview (Continued)
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 19: Linear Heater Layout Overview (Continued) 50' Tube Length 60' Tube Length 70' Tube Length 80' Tube Length... - Page 27 SECTION 6: H EATER NSTALLATION Step 6.2 Burner Tube Installation Description Part Number Burner Tube 03051XXX S-Hook 91907302 Tube/Reflector Hanger 030901XX Step 6.3 Tube Clamp Package Installation Description Part Number Tube Clamp Package 013189XX...
- Page 28 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 6.4 Coupling and Tube Assembly Close coupling and slide Insert wide end of slide bar/coupling lock into opposite end into tab. guide rail on opposite end of tabs. Slide the slide Position tab underneath bar/coupling lock up the guide rail until snug guide rail.
- Page 29 SECTION 6: H EATER NSTALLATION Step 6.4.2 Coupling and Tube Assembly (Continued) Model Tube Length Minimum HED-40 10' (3 m) HED-60 20' (6 m) HED-80 20' (6 m) HED-100 30' (9 m) HED-125 40' 12 m) HED-150 50' (15 m) HED-175 60' (18 m) 7' 6"...
- Page 30 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 6.6 Reflector Installation WARNING Fire Hazard Support reflector with reflector hanger and support strap. Reflector must not touch tube. Failure to follow these instructions can result in death, injury or property damage. NOTE: All tube surfaces must be covered by a reflector, except for a U-Tube.
- Page 31 SECTION 6: H EATER NSTALLATION Step 6.6.1 Reflector, U-Clip and Reflector Support Installation The pictorial drawings of the heater construction in tor supports and U-clips depends on the individual Section 6 are schematic only and provide a general installation. Use either pop rivets or sheet metal guideline of where hangers, reflector supports and screws instead of u-clips when installing end caps U-clips are to be installed.
- Page 32 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 6.7 Burner Installation Description Part Number NOTE: To ensure proper orientation, Burner 037XXXXX attached burner tube with tube weld Lock Washer 96411600 facing downward Gasket 02568200...
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Page 33: Section 7: Optional Heater Accessories
SECTION 7: O PTIONAL EATER CCESSORIES SECTION 7: OPTIONAL HEATER ACCESSORIES WARNING Cut/Pinch Hazard Wear protective gear during installation, operation and service. Edges are sharp. Failure to follow these instructions can result in injury. 7.1 U-Tube Configuration Heaters (except HED-40) are approved for optional U-Tube configurations. -
Page 34: Figure 20: U-Tube Heater Assembly Overview
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 20: U-Tube Heater Assembly Overview Description Part Number U-Tube Package 03011XXX 180° U-Tube 013359XX Tube and Reflector Hanger 030901XX Coupling 01312700 Reflector End Cap 027508XX U-Tube Support Bracket 030205XX 4" (10 cm) U-Bolts 91912500 Reflector Support Set 030500XX... -
Page 35: Figure 21: U-Tube Heater Layout Overview
SECTION 7: O PTIONAL EATER CCESSORIES FIGURE 21: U-Tube Heater Layout Overview... -
Page 36: Figure 22: U-Tube Heater Layout Overview (Continued)
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 22: U-Tube Heater Layout Overview (Continued) 50' Tube Length* ** 60' Tube Length 70' Tube Length** 80' Tube Length... -
Page 37: Elbow Package Configuration
SECTION 7: O PTIONAL EATER CCESSORIES 7.2 Elbow Package Configuration Step 7.2.1 Elbow Installation Minimum Distance Required Between Burner and Elbow Model Minimum Distance Description Part Number HED-40 Elbow Package 027187XX HED-60 10' (3 m) 90° Elbow 01335801 HED-80 10' (3 m) Coupling 01312700 HED-100... -
Page 38: Figure 23: Reflector Joint Detail
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 7.2.4 Reflector Joint Installation Step 7.2.5 Reflector Joint Detail FIGURE 23: Reflector Joint Detail... -
Page 39: Reflector Side Extension
SECTION 7: O PTIONAL EATER CCESSORIES 7.3 Reflector Side Extension Step 7.3.1 Bracket Installation Tube Reflector Tube and Reflector Hanger Reflector Support Reflector Side Extension Bracket (2 per Reflector) Use additional supports in high air movement applications. Description Part Number Reflector Side Extension Package 0271270X Reflector Side Extension - 96"... -
Page 40: Lower Clearance Shield Installation
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 7.4 Lower Clearance Shield Installation Step 7.4.1 Shield Support Strap Assembly Reflector 12" (30 cm) 17" (43 cm) Align Pilot Holes Lower Clearance Shield Locknuts Washers Description Part Number Lower Clearance Shield Package 01397501 Shield Support Strap 01397500... - Page 41 SECTION 7: O PTIONAL EATER CCESSORIES Step 7.5.2 Frame Shield Installation Description Part Number Deco Grille Shield - 24" (61cm) 01365900 Step 7.5.3 Reflector Side Extension Installation for Decorative Grilles Distance "A" Extension Minimum Maximum Part No. Width 2" (4 cm) 6"...
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Page 42: Protective Grille Installation
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 7.6 Protective Grille Installation Step 7.6.1 Silicone Cap Installation Silicone Cap Grille Description Part Number NOTE: Protective grille available Finger Grille Section 08050001 for use with standard reflector Grille End Cap 08050002 ONLY. Silicone Cap 91915951-6P Step 7.6.2 Grille End Cap Installation... -
Page 43: Section 8: Venting
SECTION 8: V ENTING SECTION 8: VENTING Vent pipe must be sloped downward away from the burner 1/2'' (1 cm) for every 20' (6 m). WARNING The heater may be individually vented or common vented. When venting horizontally, a maximum of two heaters can be commonly vented. -
Page 44: Horizontal Venting
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 8.3 Horizontal Venting Vent recommendations: In noncombustible walls only, vent terminal 1. Porcelain coated tubing 4'' (10 cm) O.D. (P/N 02537801-1P) may be used. (P/N 9141030D) 2. Heat treated aluminized tubing 4'' (10 cm) O.D. For 4'' (10 cm) vents in either combustible or noncombustible walls, use Tjernlund VH1-4 (P/N (P/N 91409408) -
Page 45: Figure 25: Combustion Air Weather Vent (P/N 03700009)
SECTION 8: V ENTING FIGURE 25: Combustion Air Weather Vent (P/N 03700009) To be installed in place of flue collar for installations without fresh air vent pipe. Step A Step B Set Screws Wing Nuts Flue Collar Lock Nuts Access Door Apply Silicone Sealant Step C Step D... -
Page 46: Horizontal Ventilation 4" (10 Cm) Pipe
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 26: Venting Options Indoor Harsh/Corrosive Environments 4" (10 cm) Fresh Single Air In Burner Tube Wall Pipe Vent Out Vent Adapter Burner Vent Vent Terminal Indoor Vented and Unvented Burner Tube Burner Vent Vent Out Vent Adapter... -
Page 47: Vertical Ventilation 4" (10 Cm) Pipe
SECTION 8: V ENTING 8.8 Vertical Ventilation 4" (10 cm) Pipe Description Part Number Vent Cap 4" (10 cm) 90502300 Step 8.9 Common Sidewall Venting Description Part Number Vent Terminal 6" (15 cm) 90502101 Requirements: • Maximum of two heaters can be commonly vented through a side wall. -
Page 48: Common Vertical Venting
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 8.10 Common Vertical Venting Requirements: • Maximum of four heaters can be commonly vented through the roof. • Heaters must be of the same BTU output. • Heaters must be controlled by a common thermostat. -
Page 49: Outside Combustion Air Supply
SECTION 8: V ENTING 8.11 Outside Combustion Air Supply The air supply duct may have to be insulated to pre- vent condensation on the outer surface. The outside IMPORTANT: If the building has a slight negative air terminal must not be more than 1' (31 cm) above pressure or corrosive contaminants, such as haloge- the vent termination while maintaining a minimum nated hydrocarbons, are present in the air, an outside... - Page 50 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 8.11.4 Vertical Outside Air Supply for Double Heater Installation Description Part Number Vent Cap 6" (15 cm) 90502302 Requirements: • Heaters must be controlled by a common thermostat. 8.11.5 Horizontal Outside Air Supply for Double Heater Installation Description Part Number Vent Cap 6"...
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Page 51: Section 9: Gas Piping
SECTION 9: G IPING SECTION 9: GAS PIPING There is an expansion of the tube with each firing cycle. This will cause the burner to move with respect WARNING to the gas line. This can cause a gas leak resulting in an unsafe condition if the gas connection is not made in strict accordance with Figure 27. -
Page 52: Figure 27: Gas Connection With Flexible Gas Hose
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 27: Gas Connection with Flexible Gas Hose Description Part Number High Pressure Regulator - 2 psi 90207600 High Pressure Regulator - 5 psi 90207601 Description Part Number 3/4" Flexible Stainless Steel Gas Hose (US Models) 91412204 1/2"... -
Page 53: Section 10: Wiring
SECTION 10: W IRING SECTION 10: WIRING Management System. Section 10.1 below illustrates the connection for heaters controlled by a line voltage DANGER thermostat. NOTE: In order to use line voltage ther- mostats, the low voltage terminal located at the back of each burner must be connected as shown in the detail. -
Page 54: Low Voltage Thermostat Wiring With Multiple Burners
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.3 Low Voltage Thermostat Wiring with Multiple Burners Transformer Relay FRONT VIEW BACK VIEW Low Voltage Thermostat Black COIL COIL Purple Low Voltage Black Black Jumper Wire Connected Inside All Burners Burner 1 Burner 2 White 120V-60 Hz... -
Page 55: Electrical Connection To The Burner Box Using Line Voltage Thermostat On Control
SECTION 10: W IRING 10.4 Electrical Connection to the Burner Box Using Line Voltage Thermostat on Control Connect wires together with suitable approved wire connections. White Green Black Green to Gnd. White to L2 Black to L1 Gnd. Internal Wire Bundle Burner Box Liquid Tight Flexible Conduit for Outdoor... -
Page 56: Internal Wiring
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.7 Internal Wiring MOTOR/BLOWER PRESSURE SWITCH TERMINAL BUSHING WHT BLK POWER SUPPLY PLUG 120V 60 HZ BLUE BLUE THERMOSTAT TRANSFORMER BLUE BURNER ON LED VALVE FLAME SENSE IGNITER IGNITION MODULE 10.8 Ladder Diagram 120VAC LINE NUETRAL... -
Page 57: Section 11: Operation And Maintenance
SECTION 11: O PERATION AND AINTENANCE SECTION 11: OPERATION AND MAINTENANCE WARNING DANGER Electrical Shock Hazard Explosion Hazard Burn Hazard Cut/Pinch Hazard Turn off gas supply to Allow heater to cool Wear protective gear Disconnect electric before service. heater before service. before service. -
Page 58: Maintenance Checklist
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL all heater condition should be thoroughly inspected. conform to all requirements set forth in the ROBERTS GORDON manuals and all applicable ® NOTE: Gas flow and burner ignition are among the governmental authorities pertaining to the first things that should be inspected. - Page 59 SECTION 11: O PERATION AND AINTENANCE Blower Scroll, Wheel and Compressed air or a vacuum cleaner may be used to clean dust and dirt. Motor Burner Cup and Orifice Clear of obstructions (even spider webs will cause problems). Carefully remove any dust and debris from the burner. Electrode Replace if there are cracked ceramics, excessive carbon residue, or erosion of the electrode.
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Page 60: Section 12: Troubleshooting
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 12: TROUBLESHOOTING DANGER Electrical Shock Hazard Disconnect electric before service. Heater must be properly earthed. Failure to follow these instructions can result in death or electrical shock. WARNING Fire Hazard Explosion Hazard Burn Hazard Cut/Pinch Hazard Keep all flammable... -
Page 61: Troubleshooting Flow Chart
SECTION 12: T ROUBLESHOOTING 12.1 Troubleshooting Flow Chart... - Page 62 HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL...
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Page 63: Manifold Gas Pressure Setting
SECTION 12: T ROUBLESHOOTING 12.2 Manifold Gas Pressure Setting... -
Page 64: Section 13: Replacement Parts
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 13: REPLACEMENT PARTS WARNING DANGER Electrical Shock Hazard Explosion Hazard Carbon Monoxide Hazard Fire Hazard Use only genuine ROBERTS GORDON ® replacement parts per this installation, operation and service manual. Failure to follow these instructions can result in death, electric shock, injury or property damage. See warnings and important information before removing or replacing parts. -
Page 65: Figure 28: Burner Exploded View
SECTION 13: R EPLACEMENT ARTS FIGURE 28: Burner Exploded View Part Number Description 90032510 Gas Valve (Natural) 90032512 Gas Valve (LP) 92700025 Tube Gasket (Not Shown) 03050900 Blower Inlet Gasket (Not Shown) 90708600-P Motor and Blower Assembly 91911700 Air Adapter Collar (Not Shown) 03700009 Combustion Air Weather Vent (Not Shown) Burner Cup Assembly... -
Page 66: Section 14: General Specifications
HED-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 14: GENERAL SPECIFICATIONS 14.3 Suspension Specifications 14.1 Material Specifications Hang heater with materials with a minimum working load of 75 lbs (33 kg). See Page 16, Figure 15. 14.1.1 Reflectors .024 Aluminum 14.4 Controls Specifications (optional .024 Stainless Steel Type 304) Time switches, thermostats, etc. -
Page 67: Section 15: The Roberts Gordon Complete Hed Warranty
SECTION 15: T ROBERTS GORDON ® COMPLETE ™ HED W ARRANTY SECTION 15: THE ROBERTS GORDON ® COMPLETE ™ HED WARRANTY ROBERTS-GORDON WILL PAY FOR: The ownership of the ROBERTS GORDON ® ™ COMPLETE HED is moved or transferred. This warranty Within 36 months from date of purchase by buyer or 42 is nontransferable. - Page 69 2017...
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