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. Leave the building. 6. Immediately call your local gas supplier after leaving the building. Follow the gas suppliers instructions. 7. If you cannot reach your gas supplier, call the Fire Department.
TABLE OF CONTENTS SECTION 1: Before You Begin ............................................... 1 1.1 Read This Manual ........................................................ 1 1.2 Questions, Comments or Suggestions......................... 1 SECTION 2: Introduction........................................................ 2 2.1 About Roberts-Gordon ................................................ 2 2.2 About the Heater.......................................................... 2 2.3 Unpacking the Heater ......
TABLE OF FIGURES Figure 1: Components Identification ......................................... 7 Figure 2: Specifications............................................................. 8 Figure 3: Balanced Flue.......................................................... 11 Figure 4: Horizontal Installations ............................................. 16 Figure 5: 45° Tilted Installations.............................................. 16 Figure 6: Shipping Screw..................................................
SECTION 1: BEFORE YOU BEGIN SECTION 1: BEFORE YOU BEGIN 1.1 Read This Manual Read this manual carefully before installing or servicing this equipment. Improper installation, servicing or maintenance can result in death, injury or property damage. Check the required safe distances from combustibles given on the outside of each burner to make sure that the product is suitable for your application. The required safe distances from combustibles are also found on Pages 15 and 16 of this manual.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL SECTION 2: INTRODUCTION 2.1 About Roberts-Gordon lifted from the carton at the same time. The burner should be lifted by gripping the bottom. The reflector of the heater should be lifted using the hanger. Roberts-Gordon pioneered low-intensity infrared heating systems in 1962 with the introduction of its revolutionary, custom-engineered CORAYVAC® sys- 2.3.2 Safety tem.
SECTION 2: INTRODUCTION 2.4 Carton Contents of Heaters with Galvanized Venting Please check the cartons. It should contain the items shown on this page. Contact your ROBERTS GORDON® independent distributor if any items are missing. (*) Additional package included with select models; also available as an accessory. See Page 5.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 2.5 Carton Contents of Heaters with Cox Geelen Venting Please check the cartons. It should contain the items shown on this page. Contact your ROBERTS GORDON® independent distributor if any items are missing. Heater Assembly: CGTH-30; CGTH-40; CGTH-50 (1) 3/8" (10 mm) Manual Gas Shut-off Valve P/N 90100200 °F °C OFF l 40 50 60 70 l l l l 5 10 15 20 FRONT A.) (1) Hanger P/N 08080000 B.) (1) Reflector End Cap P/N 02750800 C.
SECTION 2: INTRODUCTION 2.6 Available Accessories for Galvanized Vent Vent Terminal Extension P/N 08037000 Tjernlund Wall Vent P/N 08033000 5" (125 mm) Diameter Elbow 1" (25 mm) Diameter Spring 6" (152 mm) 2.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 2.7 Available Accessories for Cox Geelen Vent Roof Venting Kit (P/N 08032100) includes: Wall Venting Kit (P/N 08032200) includes: (1) Elbow 90° P/N 90506001 (1) Burner/Vent Adapter P/N 90506012 (1) Storm Collar P/N 90506015 (1) Roof Terminal 50.
SECTION 2: INTRODUCTION 2.8 Components Identification FIGURE 1: Components Identification Vent Collar Nipple 3/8 (10 mm) NPT Thermostat Connection Wall Termination Plate Venting Power Cord Burner Gas Line Front Fixed Hanger Reflector Manual Gas Shut-off Valve Service Door Heat Exchanger Rear Movable Hanger CGTH-Series by ® This thermostat controls your overhead tube heater. Keep burner, control compartment and reflector clean.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL Nipple-3/8" (10 mm) NPT - Point at which the gas supply is connected to the heater. Thermostat Connection - Two terminals to which the thermostat wires will be connected. Power Cord - Includes a three-prong plug that must be connected to a dedicated and properly grounded three-prong ceiling outlet. 2.9 Technical Specifications FIGURE 2: Specifications - Side View - -End View- A Reflector 1" (25 mm) Maximum Model No.
SECTION 2: INTRODUCTION 2.10 Where Can the Heater Be Installed? The CGTH-Series heater is intended for installation in the following areas: ments of this manual. The installer must give this manual and the Use and Care Manual to the owner. • Residential applications, such as: - garages - hobby greenhouses - workshops • Light industrial/commercial applications, such as: - entranceways - lobby areas - lunch rooms - aircraft hangars (See Page 11, Section 3.5.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL SECTION 3: PLANNING 3.1 General 3.3 Electrical Service Requirements This section provides the following information: WARNING • Defines the gas, electric and venting requirements for the CGTH-Series heater. Electrical Shock Hazard Plug heater into grounded three-prong ceiling receptacle. • Specifies the national standards and applicable codes that apply to the gas, electric and venting requirements.
SECTION 3: PLANNING 3.4 Venting Requirements 3.4.1 System Requirements The CGTH-Series heater must be installed with the venting system supplied or with the optional venting kit available from Roberts-Gordon. DO NOT connect this heater to a separate chimney and do not common vent with any other fuel burning appliance.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL combustibles must be maintained from vehicles parked below the heater. • When installed over hoists, the required safe distances from combustibles must be maintained from the uppermost point of the combustible materials placed on the hoist. 3.5.
SECTION 4: INSTALLATION SECTION 4: INSTALLATION WARNING Several steps are involved in the installation of the heater. • Plastic drain hose • Additional vent pipe • Roof flashing Do not attempt to operate the heater until all steps of the installation have been accomplished. • Rain collar Failure to follow these instructions can result in death, injury or property damage. • Snap hooks (as required) 4.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 4.5 General Venting Guidelines Regardless of the venting arrangement that will be connected to the heater, the following general guidelines for venting must be followed: 1. The 3" (80 mm) flue pipe must be centered inside the 5" (125 mm) air supply pipe. 2. The total length of vent pipe (horizontal and vertical runs combined, plus the length of the exterior termination) must not exceed 10' (3048 mm), and must not be less than 2' 6" (762 mm).
SECTION 4: INSTALLATION 4.6 Required Safe Distances from Combustibles In all situations, the required safe distances from combustibles must be maintained. Combustibles are materials which may catch fire and include many common items such as wood, paper, rubber, fabrics, etc. Combustible materials such as those noted, and any other combustible materials, must not be placed closer to any base or side of the CGTH-Series heater than the distances noted in the diagrams on the following page.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL FIGURE 4: Horizontal Installations 24" Min. (609 mm) A Rating Tag B C F B FIGURE 5: 45° Tilted Installations 24" Min. (609 mm) A A Approx.
SECTION 4: INSTALLATION 4.7 Hang the Heater FIGURE 7: Suspension Details Residential garages come in a variety of sizes, shapes, styles and methods of construction. Because of all these variables, it is not possible to include mounting hardware with the CGTH-Series heater. Although wooden rafters and joists are the most common overhead structural members in residential garage applications, other structural configurations are also illustrated below.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 4.10 Typical Installation Figure 9 is a typical installation of the CGTH-Series heater. The installation drawing shown has a straight horizontal venting arrangement and specifies the minimum space required for maintenance, as well as the allowable range of distances between the two suspension points. Detailed venting arrangements are illustrated in the venting section of this manual.
SECTION 4: INSTALLATION FIGURE 10: Horizontal Installation Snap Hooks Front Fixed Hanger Rear Movable Hanger 4.13 45° Tilted Installation For tilted installations: 1. Determine if the heater is going to be tilted left or tilted right (Figure 11). Select the suspension point for left or right tilting. Two suspension points must be used for the front hanger. 2. The uppermost snap hook can now be installed on the suspension hardware that you have installed for suspension of the unit.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 4.14 Grille Installation (for Select Models Only) FIGURE 12: Silicone Cap Installation A protective grille is included with select models of the CGTH-Series heater. This grille is supplied in sections and must be installed on the underside of the reflector prior to operation. Grille sections are held in position by a channel formed by the rolled edge of the reflector.
SECTION 5: VENTING INSTALLATION SECTION 5: VENTING INSTALLATION Vent configuration 1 is for the galvanized vent material, See Pages 22 through 25. Vent configuration 2 is for the Cox Geelen vent material, See Pages 26 through 30. The galvanized vent material is available for horizontal installation only. The Cox Geelen vent style can be installed horizontally or vertically. The maximum overall vent length is 10’ (3 m) with only one 90° elbow. The flue must be self supporting.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 5.3 Galvanized Horizontal Venting WARNING Carbon Monoxide Hazard Heater must be exhausted outside. Use materials supplied. This heater needs fresh air for safe operation and must be installed so there are provisions for adequate combustion and ventilation air. Failure to follow these instructions can result in death or injury.
SECTION 5: VENTING INSTALLATION FIGURE 16: Horizontal Installation Side View Side View 3" (80 mm) pipe is slid through end of terminal 10' (2048 mm) max. 2', 6" (762 mm) min. Slope down 1/4" (6 mm) per foot towards vent terminal Vent Terminal Heater Bird Screen Optional Vent Extension 6" (152 mm) min. 5" (125 mm) Air Supply Pipe 5.3.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL surface of the burner. Note this dimension here ________. 2. Using the tape measure, transfer this measurement to the inside surface of the exterior wall that the vent will penetrate; make a reference mark. Check the location of the hole to ensure that there are no internal wall structures (i.e. studs) to prevent penetration. Also check that the outlet of the vent does not compromise the general venting requirements, See Section 5.1. 3.
SECTION 5: VENTING INSTALLATION 9. Attach 3" (80 mm) elbow portion of 90° elbow kit to the 3" (80 mm) flue pipe (length 'A'). Use high temperature silicone sealant and 3 sheetmetal screws. (See Figure 21) FIGURE 23: Vent Collar and 5" Vent Attachment 1 1/2 Min. (38 mm) 1 1/2 Min. (38 mm) 3 (80 mm) FIGURE 21: Elbow Assembly High Temperature Silicone 5 (125 mm) 1 1/2 Min. (38 mm) Spring 3x Self Drill Screws 10.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 5.3.3 Vent Assembly Overview The figures in this section provide a general overview of a Cox Geelen vent for the CGTH-Series burner. Assemble the heater components as shown in Figure 24. FIGURE 24: Assembly Overview Elbow 90° P/N 90506001 Burner/Vent Adapter P/N 90506012 Elbow 45° P/N 90506002 Wall Terminal 570 mm = 22.5” P/N 90506011 Concentric Flue 254 mm = 10” P/N 90506003 Roof Terminal 1283 mm = 50.
SECTION 5: VENTING INSTALLATION 5.4 Cox Geelen Horizontal Venting WARNING Carbon Monoxide Hazard Heater must be exhausted outside. Use materials supplied. This heater needs fresh air for safe operation and must be installed so there are provisions for adequate combustion and ventilation air. Failure to follow these instructions can result in death or injury.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 4. Install the vent adapter (P/N 90506012) and secure with #8 x 3/8” sheet metal screws as shown in Figure 26. 5. If the concentric vent has to be cut (see note on Page 28), follow instructions A-E (see Figure 27). If the concentric vent does not have to be cut, see note on Page 28. Follow instructions A & F below (See Figure 27). A. Install the horizontal vent terminal (P/N 90506011) ensure that the air holes intake hole are facing down.
SECTION 5: VENTING INSTALLATION 1. Using a saw, cut an appropriate size clearance hole in the roof to accommodate the vertical run of vent pipe and the vent termination (minimum 5" [125 mm]). 5.5 Cox Geelen Vertical Venting WARNING Carbon Monoxide Hazard Heater must be exhausted outside. Use materials supplied. This heater needs fresh air for safe operation and must be installed so there are provisions for adequate combustion and ventilation air.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL Fit fasteners progressively outwards in pairs avoiding gaps over 1.5” (38 mm). 5. With the vent collar on the burner, install the additional vent pipe. Push the plain end of the vent into the silicone gaskets. The connection will fit firmly together. If undue force is required to assemble the parts, first, check the cut length for burrs, second, apply warm soapy water to the silicone gaskets.
SECTION 6: ELECTRICAL SERVICE INSTALLATION SECTION 6: ELECTRICAL SERVICE INSTALLATION 6.1 System Requirements the thermostat. No other electrical power to the thermostat is required. The CGTH-Series heater requires a grounded threeprong electrical outlet to be installed within 18" (46 2. The wire for connecting the thermostat to the cm) of the rear surface of the heater's burner. It is recheater is not supplied.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 2. Route thermostat wiring between the thermostat and the rear of the heater. Carefully staple the wires so as not to damage them and to produce a professional appearing installation. 3.Connect thermostat wires to the "THERMOSTAT CONNECTION" (See Figure 31) on the rear surface of the burner as follows: A. Using an appropriate crimping tool, install the female terminals (included in accessories bag) on the two wires from the thermostat. B.
SECTION 7: GAS SERVICE INSTALLATION SECTION 7: GAS SERVICE INSTALLATION 7.1 Install Gas Supply Lines A 3/8" gas supply connection is required as shown in Figure 32. To check system pressure, a plugged 1/8" NPT tapping is required upstream of the manual gas shut-off valve supplied with the heater. Before connecting the heater to the supply system, (Figure 32) verify that all high pressure testing of the gas piping has been completed. Do not high pressure test (greater than 1/2" psi/3.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL SECTION 8: OPERATION 8.1 Operating Instructions 1. Set the thermostat to the lowest setting. 2. Turn off all electric power to the heater. 3. Do not try to light the burner by hand. 4. Turn off the manual gas valve in the heater supply line. nism will lock out for a period of one hour or until the unit is reset. Reset is accomplished by removing power from the heater for at least five seconds. 7.
SECTION 8: OPERATION FIGURE 33: Pressure Testing Cover Cap and Regulator Screw Outlet Pressure Tap 35
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL SECTION 9: TROUBLESHOOTING 9.1 General This troubleshooting guide has been designed to assist you in locating and correcting minor problems that may occur with the CGTH-Series heater.
SECTION 9: TROUBLESHOOTING Pressure switch does not operate. Check flue/air supply duct for obstructions; remove any obstructions. Check for loose/leaky air hoses to the pressure switch; repair/ replace/tighten hoses as required. Check for 24V across the secondary terminals 4 and 5 (red and yellow wires) of the transformer. IF NO: Check for 120V across the primary terminals 1 and 3 (black and white wires) of the transformer. If 120V is present, replace transformer.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL FIGURE 34: Manometer Reading Regulator Adjustment Test Port Connection Manometer 38 6 6 5 5 4 4 3 3 2 2 1 1 0 0 3.5" (89 mm) 10.
SECTION 9: TROUBLESHOOTING BURNER DOES NOT STAY LIT Possible Cause Try this.... Damaged wires between DSI module and sensing electrode. Replace wires as required. Faulty DSI module. Replace DSI module. Cracked ceramic at the sensing electrode. Replace electrode. Recirculation of exhaust gases. Check that the 3” (80 mm) inner vent pipe is completely sealed. BURNER CYCLES ON AND OFF TOO QUICKLY Possible Cause Try this....
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL BURNER MAKES VIBRATING NOISES WHILE RUNNING Possible Cause Try this.... Motor Vibration Ensure that the shipping screw has been removed from the control housing door. See Page 17, Section 4.8. Protective Grille metal fingers touch reflector Isolate the grille finger that is making the noise and cap it with a silicone cap. See Page 20, Figure 12.
SECTION 10: MAINTENANCE SECTION 10: MAINTENANCE 10.1 Pre-Season Maintenance WARNING Turn off gas and electrical supplies before performing service or maintenance. Failure to follow these instructions can result in death, injury or property damage. For best performance, the following maintenance procedures must be performed by a contractor qualified in the installation and service of gas-fired heating equipment before each heating season: 1.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL SECTION 11: WIRING DIAGRAMS 11.1 Connection Diagram If any of the original wire as supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105°C and 600 volts. WARNING Fire Hazard Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
SECTION 11: WIRING DIAGRAMS 11.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL SECTION 12: REPLACEMENT PARTS Use only genuine ROBERTS GORDON® replacement parts. Use of parts not specified by RobertsGordon voids warranty. Failure to follow these instructions can result in property damage. This section contains the part numbers and pictorials for components of the CGTH-Series heater. Callout letters on the illustrations refer directly to the associated parts list. 12.
SECTION 12: REPLACEMENT PARTS 12.1.
CGTH INSTALLATION, OPERATION AND SERVICE MANUAL 12.2 lllustrated Parts List for Tube and Reflector FIGURE 38: Tube and Reflector F G H E D C I B Front Fixed Hanger (Ref) K J A 12.
SECTION 13: THE ROBERTS GORDON® CARIBE® LIMITED WARRANTY SECTION 13: THE ROBERTS GORDON® CARIBE® LIMITED WARRANTY READ YOUR INSTALLATION, OPERATION AND ROBERTS-GORDON WILL PAY FOR: Within 42 months from date of shipment from Roberts- SERVICE MANUAL Gordon, replacement parts will be provided free of If you have questions about your controller, contact your charge for any part of the product which fails due to a installing professional. Should you need Replacement manufacturing or material defect.
® OWNER WARRANTY REGISTRATION CARD Mail or Fax to: Roberts Gordon 1250 William Street, P.O. Box 44 Buffalo, NY 14240-0044 Phone: 716-852-4400 Fax: 716-852-0854 Toll Free: 800-828-7450 www.rg-inc.
