Roberts Gorden VANTAGE CTH3-80 Installation, Operation & Service Manual
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Roberts Gorden VANTAGE CTH3-80 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
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
CTH3-80
CTH3-115
CTH3-150
CTH3-200
P/N 134100NA Rev K 02/12

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  • Page 1 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 P/N 134100NA Rev K 02/12 © 2012 Roberts-Gordon LLC...

  • Page 3: Table Of Contents

    There are references in this manual to various trademarks. All trademarks mentioned herein, whether registered or not, are the property of their respective owners. Roberts-Gordon LLC is not sponsored by or affiliated with any of the trademark or regis- tered trademark owners, and make no representations about them, their owners, their products or services. Roberts-Gordon LLC is not sponsored by or affiliated with BACnet or LonWorks®.
  • 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 ............. 5 Figure 4: One Side Reflector............. 6 Figure 5: Two Side Reflectors ........... 6 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

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 1: Top and Bottom Panel Label Placement Logo Label Rating Plate Label Bottom Panel Proposition 65 Label Top Panel Description Part Number Logo Label 91013212 Rating Plate Label 91010401 Gas Connection Label 91018122 Gas Connection Label Proposition 65 Label...

  • 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

    • To never use heater as support for a ladder or other access equipment and never hang or sus- Roberts-Gordon LLC cannot be responsible for pend anything from heater. ensuring that all appropriate safety measures are • To ensure there is adequate air circulation around undertaken prior to installation;...

  • 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 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 12: Figure 4: One Side Reflector

    CTH3-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: ONE SIDE REFLECTOR (inches) (centimeters)

  • Page 13: Figure 7: U-Tube, Standard 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 7: U-TUBE, STANDARD REFLECTOR (inches) (centimeters)

  • Page 14: Figure 10: 2-Foot Deco Grille And Protective Grille

    CTH3-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)

  • 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

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 15, Figure 16.

  • Page 17: Standard Parts List

    SECTION 5: M AJOR OMPONENTS 5.1 Standard Parts List Table 1: Contents of Burner Carton Part No. Description CTH3-80 CTH3-115 CTH3-150 CTH3-200 034XXXXX Burner Assembly (Rate and Fuel Varies) 02568200 Gasket (Burner to Burner Tube) 134100NA Installation, Operation and Service Manual 94273914 Hex Head Bolts 5/16-18 Rolok 96411600...

  • Page 18: Section 6: Heater Installation

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL SECTION 6: HEATER INSTALLATION Expansion and contraction of the tube dictates that the minimum suspension lengths in the table on WARNING Page 13, Figure 14 be maintained. Severe Injury Hazard Secure burner to burner tube with bolts and lockwashers.

  • Page 19: Figure 14: Critical Hanger Placement

    SECTION 6: H EATER NSTALLATION FIGURE 14: Critical Hanger Placement Run Length Typical Expansion Minimum “X” Length Description Part Number 10' - 50' ±1" (3 cm) 12" S-Hook 91907302 51' - 60' ±2" (5 cm) 18" Tube/Reflector Hanger 03090100 61' - 70' ±3"...

  • Page 20: Figure 15: Linear Heater Assembly Overview

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 15: Linear Heater Assembly Overview 14 of 71...

  • Page 21: Figure 16: Linear Heater Layout Overview

    SECTION 6: H EATER NSTALLATION FIGURE 16: Linear Heater Layout Overview 15 of 71...

  • Page 22: Burner Tube Installation

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 6.1 Burner Tube Installation Description Part Number Burner Tube 03051XXX S-Hook 91907302 Tube/Reflector Hanger 03090100 Step 6.2 Tube Clamp Package Installation Description Part Number Tube Clamp Package 01318901 Tube Clamp 01396801 Bolt 97113940 Flat Washer 95211600...

  • Page 23: Coupling And Tube Assembly

    SECTION 6: H EATER NSTALLATION Step 6.3 Coupling and Tube Assembly Close coupling Start Slide bar/Coupling Lock. with tab. Insert tubes into coupling. Tighten coupling to join tubes. Description Part Number Coupling 01329600 Slide bar/Coupling Lock 01329700 Tube 91409XXX Step 6.3.1 Coupling and Tube Assembly (Continued) Tighten slide bar as shown below.

  • Page 24: Turbulator Installation

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 6.3.2 Coupling and Tube Assembly (Continued) Tube Length Model Minimum CTH3-80 20' (6 m) CTH3-115 30' (9 m) CTH3-150 40' (12 m) CTH3-200 50' (15 m) 7' 6" ± 1' (2.3 m ± .25 m) 10' ±...

  • Page 25: Reflector Installation

    SECTION 6: H EATER NSTALLATION 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 26 CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 27: Burner Installation

    SECTION 6: H EATER NSTALLATION Step 6.6 Burner Installation Description Part Number Bolt 94273914 Burner 034XXXXX Lock Washer 96411600 Gasket 02568200 21 of 71...

  • Page 28: Section 7: Optional Heater Accessories

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 29: Figure 17: U-Tube Heater Assembly Overview

    SECTION 7: O PTIONAL EATER CCESSORIES FIGURE 17: U-Tube Heater Assembly Overview 23 of 71...

  • Page 30: Figure 18: U-Tube Heater Layout Overview

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 18: U-Tube Heater Layout Overview 24 of 71...

  • Page 31: Elbow Package Configuration

    SECTION 7: O PTIONAL EATER CCESSORIES 7.2 Elbow Package Configuration Step 7.2.1 Elbow Installation Minimum Distance Required Description Part Number Between Burner and Elbow Elbow Package 02718702 Minimum Model Distance 90° Elbow 01335801 Coupling 01312700 CTH3-80 10' (3m) CTH3-115 Reflector End Cap 02750800 CTH3-150 15' (4.5m)

  • Page 32: Figure 19: Reflector Joint Detail

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL Step 7.2.4 Reflector Joint Installation Step 7.2.5 Reflector Joint Detail FIGURE 19: Reflector Joint Detail 26 of 71...

  • Page 33: Reflector Side Extension

    SECTION 7: O PTIONAL EATER CCESSORIES 7.3 Reflector Side Extension Step 7.3.1 Bracket Installation Description Part Number Reflector Side Extension Package 02712700 Reflector Side Extension 01368000 Retainer Clips 02751200 Sheet Metal Screws 94118106 Order Separately Reflector Side Extension Bracket 01329910 Step 7.3.2 Side Reflector Installation 27 of 71...

  • Page 34: Lower Clearance Shield Installation

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 7.4 Lower Clearance Shield Installation Step 7.4.1 Shield Support Strap Assembly Description Part Number Lower Clearance Shield Package 01397501 Shield Support Strap 01397500 Lower Clearance Shield 8' 02793000 Locknut #8 92311400 Flat Washer #8 95310800 Screw #8 x 3/8"...
  • Page 35 SECTION 7: O PTIONAL EATER CCESSORIES 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 36: Protective Grille Installation

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 7.6 Protective Grille Installation Step 7.6.1 Silicone Cap Installation Description Part Number Grille Section 08050001 Grille End Cap 08050002 Silicone Cap 91915951-6P Step 7.6.2 Grille End Cap Installation Step 7.6.3 Grille Installation 30 of 71...

  • Page 37: 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 38: Horizontal Venting

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 8.3 Horizontal Venting FIGURE 20: Tube Termination In noncombustible walls only, vent terminal (P/N 02537801-1P) may be used. For 4" (10 cm) vents in either combustible or noncombustible walls, use Tjernlund VH1-4 (P/N 90502100) or equivalent, insulated vent terminal.

  • Page 39: 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 8.9 Common Side Wall Venting Description Part Number Vent Terminal 6" (15 cm) 90502101 Requirements: • Heaters must be of the same BTU output. •...

  • Page 40: Common Vertical Venting

    CTH3-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 41: Outside Combustion Air Supply

    SECTION 8: V ENTING 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 32, Section 8.6. halogenated hydrocarbons are present in the air, an outside combustion air supply to the heater is required.
  • Page 42 CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 8.11.4 Vertical Outside Air Supply for Double Heater Installation SIDE VIEW 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 TOP VIEW Description Part Number...

  • Page 43: 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 21.

  • Page 44: Figure 21: Gas Connection With Flexible Gas Hose

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 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 45: Section 10: Wiring

    SECTION 10: W IRING 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. If any of the original internal wiring must be replaced, it must be replaced with wiring materials having a temperature rating of at least 105°C and 600 Volts.

  • Page 46: Central And Satellite Heaters (Zoning Capability)

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.2 Central and Satellite Heaters (Zoning Capability) The heater can be configured so that several heaters 10.2.1 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 47: Figure 24: Satellite Heater Jumper Setting

    SECTION 10: W IRING 10.2.2 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 41, Figure 24. Jumper position on J10, shown on Page 41, Figure 24 will configure heater as a satellite heater.

  • Page 48: Communication Wiring Within A Zone Of Heaters

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.3 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 42, Figure 25. FIGURE 25: Communication Wiring within a Zone of Heaters CENTRAL HEATER CONTROL 42 of 71...

  • Page 49: Communication Wiring Within A Zone Of Heaters (Continued)

    SECTION 10: W IRING 10.3 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 42 through Page 43, Figure 25. FIGURE 25: Communication Wiring within a Zone of Heaters (continued) 43 of 71...

  • Page 50: Heat Demand Control Wiring

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.4 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 51 SECTION 10: W IRING 10.4.3 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. thermostat can be installed to supply an analog (4- 20mA) or (2-10Vdc with 500 Ohm resistor) control signal to dictate the heater(s) firing rate.

  • Page 52: Table 4: Cable Requirements

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.4.7 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...

  • Page 53: Figure 27: Analog Control Signal Wiring Diagram

    SECTION 10: W IRING 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 54: Figure 28: Potentiometer Control Wiring Diagram

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.4.9 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.

  • Page 55: Figure 29: Modulating Thermostat Wiring Diagram

    SECTION 10: W IRING FIGURE 29: 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 56: Figure 30: Modulating Thermostat Wiring Diagram (Lonworks [2-10Vdc With 500 Ohm Resistor] Optional)

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL FIGURE 30: 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 ®...

  • Page 57: Figure 31: Modulating Thermostat Wiring Diagram With Bacnet (Optional)

    SECTION 10: W IRING FIGURE 31: 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 58: Internal Wiring

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.5 Internal Wiring See Page 39, Section 10.1 through Page 48, Section 10.4.9 for temperature control device options and wiring schematic. 52 of 71...

  • Page 59: Ladder Diagram

    SECTION 10: W IRING 10.6 Ladder Diagram See Page 39, Section 10.1 through Page 48, Section 10.4.9 for temperature control device options and wiring schematic. 53 of 71...

  • Page 60: Line Voltage Power Wiring

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 10.7 Line Voltage Power Wiring uninterrupted NOTE: The burners must have an 120 V, 60 Hz, 1 Ø power supply. 10.8 Electrical Connection to the Burner 54 of 71...

  • Page 61: Low Voltage Control Wiring Installation

    SECTION 10: W IRING 10.9 Low Voltage Control Wiring Installation Description Part Number Cable Grommet with Tie 91309605 55 of 71...

  • Page 62: Section 11: Operation And Maintenance

    CTH3-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 63 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 equipment must perform a thorough safety conform to all requirements set forth in the inspection of the heater.
  • Page 64 See Page 4, Section 2.1. Safety Labels Product safety signs or labels should be replaced by the product user when they are no longer legible. Please contact Roberts-Gordon LLC or your ROB- ERTS GORDON ®...

  • Page 65: 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 66: Control Led

    CTH3-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 67 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 68: Troubleshooting Flow Chart

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 12.3 Troubleshooting Flow Chart 62 of 71...
  • Page 69 SECTION 12: T ROUBLESHOOTING 63 of 71...

  • Page 70: Manifold Gas Pressure Measurement

    CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 12.4 Manifold Gas Pressure Measurement n t d v ve n t t e ed e t n t e e t n de t 64 of 71...

  • Page 71: Pneumatic Connections

    SECTION 12: T ROUBLESHOOTING 12.5 Pneumatic Connections 65 of 71...

  • Page 72: Section 13: Replacement Parts

    CTH3-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. 66 of 71...
  • Page 73 SECTION 13: R EPLACEMENT ARTS 67 of 71...
  • Page 74 CTH3-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 75: 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 13, Figure 14. .024 Aluminum (Optional .024 Stainless Steel Type 304) 14.4 Controls Specifications 14.2 Heater Specifications Time switches, sensors, etc.
  • Page 76 CTH3-S ERIES NSTALLATION PERATION AND ERVICE ANUAL 70 of 71...

  • Page 77: Section 15: The Roberts Gordon Vantage Modulating Warranty

    Roberts-Gordon LLC is not permitted to inspect the a manufacturing or material defect. damaged controller and/or component parts. Roberts-Gordon LLC will require the part in question to be READ YOUR INSTALLATION, OPERATION AND returned to the factory. Roberts-Gordon LLC will, at its sole...

This manual is also suitable for:

Vantage cth3-150Vantage modulating cth3-80Vantage cth3-115Vantage modulating cth3-150Vantage cth3-200

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