Roberts Gorden Combat CM-80 Installation, Operation & Service Manual
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Roberts Gorden Combat CM-80 Installation, Operation & Service Manual

Gas-fired, low intensity unitary heater
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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.
© 2012 Roberts-Gordon LLC
Combat
MODULATING
Gas-Fired, Low Intensity
Installation, Operation &
Installer
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.
Owner
Keep this manual in a safe place in order to provide
your serviceman 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.rg-inc.com
www.radiantheaters.com
Unitary Heater
Service Manual
CM-80
CM-115
CM-150
CM-200
P/N C134100NA Rev D 02/12

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Summary of Contents for Roberts Gorden Combat CM-80

  • Page 1 FOR YOUR SAFETY Combat 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1: Heater Safety............1 SECTION 9: Gas Piping............38 1.1 Manpower Requirements ..........1 SECTION 10: Wiring.............. 40 1.2 Safety Labels and Their Placement ......1 10.1 Heater Wiring for use with Brooder Controller ..40 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 3: Standard Reflector ............. 6 Figure 4: One Side Reflector............. 7 Figure 5: Two Side Reflectors ........... 7 Figure 6: 45°...

  • Page 7: Section 1: Heater Safety

    SECTION 1: H EATER AFETY SECTION 1: HEATER SAFETY the product user when they are no longer legible. Please contact Roberts-Gordon LLC or your ROB- Your Safety is Important to Us! ERTS GORDON ® independent distributor to obtain This symbol is used throughout replacement signs or labels.

  • Page 8: Figure 1: Top And Bottom Panel Label Placement

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 1: Top and Bottom Panel Label Placement Logo Label Rating Plate Label Bottom Panel Top Panel Proposition 65 Label Description Part Number Logo Label 91040030 Rating Plate Label 91010401 Gas Connection Label 91018122 Proposition 65 Label 91070015...

  • Page 9: Figure 2: Side And Back Panel Label Placement

    SECTION 1: H EATER AFETY FIGURE 2: Side and Back Panel Label Placement Control Side Panel Clearances to Combustibles Label Control Side Panel (Inside) Wiring Label N.O. Carbon Monoxide Hazard Label Inside Bottom Panel Vent Length Label Low Voltage Connection Label Back Panel Description...

  • Page 10: Section 2: Installer Responsibility

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 2: INSTALLER RESPONSIBILITY Model number and installed configuration are found on the burner and in the Installation, Operation and The installer is responsible for the following: Service Manual. See Page 6, Figure 3 through Page •...

  • Page 11: National Standards And Applicable Codes

    SECTION 2: I NSTALLER ESPONSIBILITY ensuring that all appropriate safety measures are undertaken prior to installation; this is entirely the responsibility of the installer. It is essential that the contractor, the sub-contractor, or the owner identifies the presence of combustible materials, corrosive chemicals or halogenated hydrocarbons* anywhere in the premises.

  • Page 12: Section 3: Clearances To Combustibles

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 3: CLEARANCES TO COMBUSTIBLES WARNING 3.1 Required Clearances to Combustibles Clearances are the required distances that combustible 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 13: Figure 4: One Side Reflector

    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 4: ONE SIDE REFLECTOR (inches) (centimeters)

  • Page 14: Figure 7: U-Tube, Standard Reflector

    CM-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 7: U-TUBE, STANDARD REFLECTOR (inches) (centimeters)

  • Page 15: Figure 10: 2-Foot Deco Grille And Protective Grille

    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 10: 2-FOOT DECO GRILLE AND PROTECTIVE GRILLE (inches) (centimeters)

  • Page 16: Section 4: National Standards And Applicable Codes

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 17: Section 5: Major Components

    SECTION 5: M AJOR OMPONENTS SECTION 5: MAJOR COMPONENTS FIGURE 13: Major Component Descriptions Reflector Burner with Tube Gasket (Aluminum or Must be installed with the Stainless flame observation Steel) window facing down. Alternate overlap as shown on overview and on Page 16, Figure 16.

  • Page 18: Standard Parts List

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 5.1 Standard Parts List Table 1: Contents of Burner Carton Part No. Description CM-80 CM-115 CM-150 CM-200 C34CXXXXX Burner Assembly (Rate and Fuel Varies) 02568200 Gasket (Burner to Burner Tube) C134100NA Installation, Operation and Service Manual 94273914 Hex Head Bolts 5/16-18 Rolok 96411600...

  • Page 19: Section 6: Heater Installation

    SECTION 6: H EATER NSTALLATION SECTION 6: HEATER INSTALLATION Expansion and contraction of the tube dictates that the minimum suspension lengths in the table on WARNING Page 14, Figure 14 be maintained. Severe Injury Hazard Secure burner to burner tube with bolts and lockwashers.

  • Page 20: Figure 14: Critical Hanger Placement

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 14: Critical Hanger Placement Typical Suspension Details Beam Clamp Concrete Beam Wood Beam Anchor Locknut Screw Hook 3/8" Chain Size 3/16" Washers Rod 3/8" Minimum 24" min.* (61 cm) “X”* S-hooks Turnbuckle * Allows for thermal expansion of system Not Included S-hooks...

  • Page 21: Figure 15: Linear Heater Assembly Overview

    SECTION 6: H EATER NSTALLATION FIGURE 15: Linear Heater Assembly Overview 15 of 73...

  • Page 22: Figure 16: Linear Heater Layout Overview

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 16: Linear Heater Layout Overview LEGEND Burner Reflector 20' (6 m) Tube Length Tube Tube/Reflector Hanger Coupling Assembly Vent Adapter a = 14" (36 cm) 30' (9 m) Tube Length reflector width (not shown) b = 2"...

  • Page 23: Burner Tube Installation

    SECTION 6: H EATER NSTALLATION Step 6.1 Burner Tube Installation NOTE: Tubing requires a downward slope of 1/2" (1.3 cm) Offset mounting per 20' (6 m) away hole must be from burner. to the top. S-hook Hanger Burner Tube Weld seam must be to the bottom of the tube.

  • Page 24: Coupling And Tube Assembly

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 6.3 Coupling and Tube Assembly Close coupling Start Slide bar/Coupling Lock. with tab. Slide Bar/Coupling Lock Wide End Coupling Open 3" (8 cm) to 4" (10 cm) Closed Insert tubes into coupling. Tighten coupling to join tubes.

  • Page 25: Turbulator Installation

    SECTION 6: H EATER NSTALLATION Step 6.3.2 Coupling and Tube Assembly (Continued) Tube Length Model Minimum CM-80 20' (6 m) CM-115 30' (9 m) CM-150 40' (12 m) CM-200 50' (15 m) 7' 6" ± 1' (2.3 m ± .25 m) 10' ±...

  • Page 26: Reflector Installation

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 6.5 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 27 SECTION 6: H EATER NSTALLATION Step 6.5.1 Reflector, U-Clip and Reflector Support Installation The pictorial drawings of the heater construction in reflector supports and U-clips depends on the Section 6 are schematic only and provide a general individual installation. Use either pop rivets or sheet guideline of where hangers, reflector supports and metal screws instead of u-clips when installing end U-clips are to be installed.

  • Page 28: Burner Installation

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 6.6 Burner Installation Burner Gasket S-hook Burner Tube Burner must be installed with the flame observation Lock window facing down. Washer Description Part Number Bolt 94273914 Burner C34CXXXXX Lock Washer 96411600 Gasket 02568200 22 of 71...

  • Page 29: 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 are approved for optional U-Tube configurations.

  • Page 30: Figure 17: U-Tube Heater Assembly Overview

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 17: U-Tube Heater Assembly Overview 24 of 71...

  • Page 31: Figure 18: U-Tube Heater Layout Overview

    SECTION 7: O PTIONAL EATER CCESSORIES FIGURE 18: U-Tube Heater Layout Overview LEGEND Burner Reflector 20' (6 m) Tube Length* Tube 10' (3 m) Tube 5' (1.5 m)** Tube/Reflector Hanger Coupling 30' (9 m) Tube Length** Assembly U-tube a = 14" (36 cm) reflector width (not shown) b = 2"...

  • Page 32: Elbow Package Configuration

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 7.2 Elbow Package Configuration Step 7.2.1 Elbow Installation Tube Coupling Minimum Distance Required Description Part Number Between Burner and Elbow Elbow Package 02718702 Minimum 90° Elbow Model Distance 90° Elbow 01335801 Coupling 01312700 CM-80 10' (3m) CM-115...

  • Page 33: Figure 19: Reflector Joint Detail

    SECTION 7: O PTIONAL EATER CCESSORIES Step 7.2.4 Reflector Joint Installation Step 7.2.5 Reflector Joint Detail FIGURE 19: Reflector Joint Detail 27 of 73...

  • Page 34: Reflector Side Extension

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 02712700 Reflector Side Extension...

  • Page 35: Lower Clearance Shield Installation

    SECTION 7: O PTIONAL EATER CCESSORIES 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 Lower Clearance Shield 8'...
  • Page 36 CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 7.5.2 Frame Shield Installation Description Part Number Deco Grille Shield 01365900 Step 7.5.3 Reflector Side Extension Installation for Decorative Grilles Distance "A" Extension Minimum Maximum Part No. Width 2" (4 cm) 6" (15 cm) 01370408 8"...

  • Page 37: Protective Grille Installation

    SECTION 7: O PTIONAL EATER CCESSORIES 7.6 Protective Grille Installation Step 7.6.1 Silicone Cap Installation Silicone Cap Description Part Number Grille Grille Section 08050001 Finger Grille End Cap 08050002 Silicone Cap 91915951-6P Step 7.6.2 Grille End Cap Installation Grille Grille End Cap Bend up 90°.

  • Page 38: Section 8: Venting

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 8: VENTING a high temperature silicone sealant. WARNING Any portion of vent pipe passing through a combustible wall must have an approved thimble to conform with the above listed codes. Vent pipe must be sloped downward away from the burner 1/2'' (1 cm) for every 20' (6 m).

  • Page 39: Horizontal Venting

    SECTION 8: V ENTING If exhaust fans are used to supply ventilation air, an installed at the exhaust end of the tube. Vent terminal interlock switch must be used to prevent the heater design shall not incorporate backdraft flap. from coming on when the fans are off. This may be FIGURE 20: Tube Termination done using a pressure switch.

  • Page 40: Vertical Ventilation 4" (10 Cm) Pipe

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 8.8 Vertical Ventilation 4" (10 cm) Pipe Description Part Number Vent Cap 4" (10 cm) 90502300 8.9 Common Side Wall Venting TOP VIEW Vent Terminal Tjernlund VH1-6 or Equivalent Outside Wall Outside Wall Sweeping 'T' 6"...

  • Page 41: Common Vertical Venting

    SECTION 8: V ENTING 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. • Connections to a common stack must be positioned to avoid direct opposition between streams of combustion gases.

  • Page 42: Outside Combustion Air Supply

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 8.11 Outside Combustion Air Supply IMPORTANT: If the building has a slight negative 8.11.1 Length Requirements pressure or corrosive contaminants such as Follow the constraints listed on Page 33, Section 8.6. halogenated hydrocarbons are present in the air, an outside combustion air supply to the heater is required.
  • Page 43 SECTION 8: V ENTING 8.11.4 Vertical Outside Air Supply for Double Heater Installation SIDE VIEW Vent Cap Roof For 80 and 115 models, 6" (15 cm) Single Wall Pipe. For 150 or 200 models, 7" (18 cm) Single Wall Pipe. Sweeping 'T' Connection Flex Hose...

  • Page 44: Section 9: Gas Piping

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 21.

  • Page 45: Figure 21: Gas Connection With Flexible Gas Hose

    SECTION 9: G IPING FIGURE 21: Gas Connection with Flexible Gas Hose CORRECT POSITIONS CAUTION Product Damage Hazard Shut-Off Valve (included with gas hose) must Hold gas nipple securely with pipe wrench be parallel to burner gas inlet. The 3" (8 cm) when attaching gas hose.

  • Page 46: Section 10: Wiring

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 10: WIRING Heater must be grounded in accordance with applicable codes: United States: refer to National Electrical Code NFPA 70 - latest revision ® DANGER Canada: refer to Canadian Electrical Code, CSA C22.1 Part I - latest revision.

  • Page 47: Figure 23: Low Voltage Brooder Control Wiring

    SECTION 10: W IRING 10.1.2 Brooder Control Wiring block on the right-most pins as shown if Figure 23. The satellite heaters will have the J10 pin jumpers set The heater outputs on the brooder controller will act on the left-most pins. as the ON/OFF switch in the control circuit.

  • Page 48: Standard Heater Configuration

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.2 Standard Heater Configuration control wiring must be installed between the heaters’ controls as shown on Page 42, Figure 24. From the factory, the heater is configured for zone For additional details or for use with heat demand sensor control.

  • Page 49: Central And Satellite Heaters (Zoning Capability)

    SECTION 10: W IRING 10.3 Central and Satellite Heaters (Zoning Capability) The heater can be configured so that several heaters 10.3.1 Central Heater Configuration within the same heating zone will modulate Central heater configuration is set by positioning of simultaneously with connection to a single heat jumpers on pin blocks (J10 and J9) located on the demand control device.

  • Page 50: Figure 26: Satellite Heater Jumper Setting

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.3.2 Satellite Heater Configuration Satellite heater configuration is set by positioning of jumpers on pin block J10 located on the control board inside the heater compartment, See Page 44, Figure 26. Jumper position on J10, shown on Page 44, Figure 26 will configure heater as a satellite heater.

  • Page 51: Communication Wiring Within A Zone Of Heaters

    SECTION 10: W IRING 10.4 Communication Wiring within a Zone of Heaters Satellite heaters will be wired in series to the central Communication wiring uses the T28-T31 terminals heater via low voltage control wiring. on the control, see Page 45, Figure 27. FIGURE 27: Communication Wiring within a Zone of Heaters CENTRAL HEATER CONTROL 45 of 73...

  • Page 52: Communication Wiring Within A Zone Of Heaters (Continued)

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.4 Communication Wiring within a Zone of Heaters (continued) Satellite heaters will be wired in series to the central heater via low voltage control wiring. Communication wiring uses the T28-T31 terminals on the control, See Page 45 through Page 46, Figure 27. FIGURE 27: Communication Wiring within a Zone of Heaters (continued) 46 of 71...

  • Page 53: Heat Demand Control Wiring

    SECTION 10: W IRING 10.5 Heat Demand Control Wiring W wires to the heater control and does not connect the Y (cooling) and G (fan) wires to the heater The heater input can be controlled by any one of the control.
  • Page 54 CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.5.3 Analog Signal Modulating Thermostat (P/N allow integral peer to peer BACnet ® MS/TP LAN 90425105) network communications with configurable baud rates and can easily integrate with a building A programmable, 7-day programming, modulating automation system.

  • Page 55: Table 4: Cable Requirements

    SECTION 10: W IRING 10.5.7 Cable Termination Table lists wiring types, sizes and distances for modulating thermostat with LonWorks ® communication (P/N 90425104), modulating thermostat without communication (P/N 90425105) and BACnet ® programmable thermostat (P/N 90425109) Table 4: Cable Requirements Wire Function Recommended Wire Size Specification or...

  • Page 56: Figure 29: Analog Control Signal Wiring Diagram

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL For 4-20mA control of the heater(s) firing rate, the 2. Based on sensed temperatures, the BMS will following control conditions apply: output an analog signal for the desired heater(s) firing rate. ON/OFF relay at the external controller or BMS must be wired to R and W terminals on the heater control 3.

  • Page 57: Figure 30: Potentiometer Control Wiring Diagram

    SECTION 10: W IRING 10.5.9 Potentiometer Control Device Potentiometer (10K Ohm"Linear Taper") device offers manual control over heater(s) firing rate. This type of potentiometer can be found at Radio Shack ® Potentiometer dial position directly dictates heater(s) firing rate. Dial positions range between "Min" and "Max".

  • Page 58: Figure 31: Modulating Thermostat Wiring Diagram (Lonworks® [4-20 Ma] Optional)

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 31: Modulating Thermostat Wiring Diagram (LonWorks ® [4-20 mA] optional) ® NOTE: 1. For non-communicating thermostats without LonWorks bus, thermostat terminals marked "EB" will be marked "_____" and no LonWorks ® bus communication wires are used. * Separate on/off switch is optional for "satellite"...

  • Page 59: Figure 32: Modulating Thermostat Wiring Diagram

    SECTION 10: W IRING FIGURE 32: Modulating Thermostat Wiring Diagram (LonWorks ® [2-10Vdc with 500 Ohm resistor] optional) ® NOTE: 1. For non-communicating thermostats without LonWorks bus, thermostat terminals marked "EB" will be marked "_____" and no LonWorks ® bus communication wires are used. * Separate on/off switch is optional for "satellite"...

  • Page 60: Figure 33: Modulating Thermostat Wiring Diagram With

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 33: Modulating Thermostat Wiring Diagram with BACnet ® (optional) NOTES: 1. A jumper is pre-installed between phase R(24VAC) and SC1-3 (24VAC Relay). 2. Ground ONLY ONE END of the shielded cable. * Separate on/off switch is optional for "satellite" heaters (install at user level).

  • Page 61: Internal Wiring

    SECTION 10: W IRING 10.6 Internal Wiring See Page 42, Section 10.2 through Page 51, Section 10.5.9 for temperature control device options and wiring schematic. 55 of 73...

  • Page 62: Ladder Diagram

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.7 Ladder Diagram 120V GAS VALVE DOOR SWITCH MOTOR AIR SWITCH SURFACE CONTROL IGNITER FLAME SENSOR See Page 42, Section 10.2 through Page 51, Section 10.5.9 for temperature control device options and wiring schematic. 10.8 Electrical Connection to the Burner Electrical Cord or Flexible Conduit...

  • Page 63: Low Voltage Control Wiring Installation

    SECTION 10: W IRING 10.9 Low Voltage Control Wiring Installation Description Part Number Cable Grommet with Tie 91309605 57 of 73...

  • Page 64: Section 11: Operation And Maintenance

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 heater before service. before service.
  • Page 65 SECTION 11: O PERATION AND AINTENANCE service or maintenance. Allow heater to cool before Installation Code and Annual Inspections: servicing. All installation and service of ROBERTS GORDON ® equipment must be performed by a contractor Before every heating season, a contractor qualified in qualified in the installation and service of equipment the installation and service of gas-fired heating sold and supplied by Roberts-Gordon LLC and...
  • Page 66 CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Check for gas leaks. See Page 38, Section 9. Gas Line Burner Observation Make sure it is clean and free of cracks or holes. Window Clean and replace as required. Blower Scroll, Wheel and Compressed air or a vacuum cleaner may be used to clean dust and dirt.

  • Page 67: Section 12: Troubleshooting

    SECTION 12: T ROUBLESHOOTING SECTION 12: TROUBLESHOOTING DANGER Electrical Shock Hazard Disconnect electric before service. More than one disconnect switch may be required to disconnect electric from heater. Heater must be properly grounded to an electrical source. Failure to follow these instructions can result in death or electrical shock.

  • Page 68: Control Led

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 12.1 Control LED AMBER, The control inside the heater's control compartment Fast Flashing: Heater is in RETRY mode. is equipped with a tri-color LED. The LED offers comprehensive diagnostic capability. The LED is RED Steady LED: Control FAILURE, showing some form of status signal at all times when...
  • Page 69 SECTION 12: T ROUBLESHOOTING RED, 8 flashes: Lockout- Pressure switch failed to operate or modulation current was incorrect. Condition could be caused by: • Pressure Sensor • Pressure Switch (faulty or hoses reversed) • Gas Valve Modulation Coil • Wire Harness (6 wire) RED, 9 flashes: Lockout- Air Supply.

  • Page 70: Troubleshooting Flow Chart

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 12.3 Troubleshooting Flow Chart 64 of 71...
  • Page 71 SECTION 12: T ROUBLESHOOTING 65 of 73...

  • Page 72: Manifold Gas Pressure Measurement

    CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 12.4 Manifold Gas Pressure Measurement WARNING Carbon Monoxide Hazard Do not adjust gas valve pressure regulator. Do not tamper with sealed parts. Pressure regulator is factory calibrated for safe operation. Failure to follow these instructions can result in death or injury.

  • Page 73: Pneumatic Connections

    SECTION 12: T ROUBLESHOOTING 12.5 Pneumatic Connections 67 of 73...

  • Page 74: Section 13: Replacement Parts

    CM-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. 68 of 71...
  • Page 75 SECTION 13: R EPLACEMENT ARTS 69 of 73...
  • Page 76 CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Description Part Number Gas Valve (Natural) 90033105K Gas Valve (LP) 90033104K Tube Gasket 02568200 Blower Inlet Gasket (80, 115 models) 03050900 Blower Inlet Gasket (150, 200 models) 90709910 Blower Assembly (80, 115) 90708602-P Blower Assembly (150, 200) 90709900-P Air Collar (80, 115 models)

  • Page 77: Section 14: General Specifications

    SECTION 14: G ENERAL PECIFICATIONS SECTION 14: GENERAL SPECIFICATIONS 14.1 Material Specifications 14.3 Suspension Specifications 14.1.1 Reflectors Hang heater with materials with a minimum working load of 75 lbs (33 kg). See Page 14, Figure 14. .024 Aluminum (Optional .024 Stainless Steel Type 304) 14.4 Controls Specifications 14.2 Heater Specifications Time switches, sensors, etc.
  • Page 78 CM-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 72 of 71...

  • Page 79: Section 15: The Roberts Gordon Combat Modulating Warranty

    SECTION 15: T ROBERTS GORDON ® COMBAT ® MODULATING W ARRANTY The data plate and/or serial number are removed, SECTION 15: THE ROBERTS GORDON ® COMBAT ® defaced, modified or altered in any way. MODULATING WARRANTY The ownership of the ROBERTS GORDON ®...

This manual is also suitable for:

Combat cm-115Combat cm-150Combat cm-200

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