Roberts Gorden CTH2-150, CTH2-80, CTH2-125, CTH2-175, CTH2-100 User Manual

WARNING
Installation must be done by a contractor qualified in the installation and service of gas-fired heating equipment or your gas supplier.
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.
WARNING
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.
Fire Hazard
Keep all flammable objects, liquids and vapors the minimum required clear­ances 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.
®
Vantage
II
Gas-Fired, Low Intensity
Unitary Heater
Installation, Operation &
Service Manual
CTH2-40 CTH2-60
CTH2-80 CTH2-100 CTH2-125 CTH2-150 CTH2-175
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
© 2012 Roberts-Gordon LLC
Keep this manual in a safe place in order to provide
your serviceman with necessary information.
Roberts-Gordon LLC
1250 William Street P. O . B o x 4 4 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 130100NA Rev. M 02/12
© 2012
Roberts-Gordon LLC
All rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied in any form or by any means - graphic, electronic, or mechanical, including photocopying, recording, taping or information storage and retrieval systems - without the written permission of Roberts-Gordon LLC.

TABLE OF CONTENTS

SECTION 1: Heater Safety...................................................... 1
1.1 Manpower Requirements .............................................1
1.2 Safety Labels and Their Placement ............................. 1
1.3 California Proposition 65 ..............................................1
SECTION 2: Installer Responsibility .....................................4
2.1 Wall Tag....................................................................... 4
2.2 Corrosive Chemicals.................................................... 4
2.3 National Standards and Applicable Codes .................. 4
SECTION 3: Clearances to Combustibles............................. 5
3.1 Required Clearances to Combustibles.........................5
SECTION 4: National Standards and Applicable Codes .....9
4.1 Gas Codes................................................................... 9
4.2 Aircraft Hangars ...........................................................9
4.3 Public Garages ............................................................9
4.4 Electrical ...................................................................... 9
4.5 Venting.........................................................................9
4.6 High Altitude ................................................................ 9
SECTION 5: Major Components ..........................................10
5.1 Standard Parts List .................................................... 11
SECTION 6: Heater Installation............................................ 13
6.1 Burner Tube Installation ............................................ 18
6.2 Tube Clamp Package Installation.............................. 18
6.3 Coupling and Tube Assembly....................................19
6.4 Turbulator Installation ................................................ 20
6.5 Reflector Installation ..................................................21
6.6 Burner Installation...................................................... 23
SECTION 7: Optional Heater Accessories..........................24
7. 1 U - Tube Configuration.................................................. 24
7.2 Elbow Package Configuration.....................................28
7.3 Reflector Side Extension ............................................30
7. 4 L o wer Clearance Shield Installation ........................... 31
7. 5 Two-Foot Decorative Grille Installation .......................31
7.6 Protective Grille Installation ........................................ 33
SECTION 8: Venting.............................................................. 34
8.1 General Venting Requirements..................................34
8.2 Unvented Operation...................................................34
8.3 Horizontal Venting......................................................35
8.4 Vertical Venting..........................................................35
8.5 Unvented Operation T
8.6 Length Requirements ................................................35
8.7 Horizontal Ventilation 4" (10 cm) Pipe........................35
8.8 Vertical Ventilation 4" (10 cm) Pipe ............................36
8.9 Common Sidewall Venting......................................... 36
8.10 Common Vertical Venting ........................................37
8.11 Outside Combustion Air Supply ...............................38
ube Termination ...................... 35
SECTION 9: Gas Piping........................................................ 40
SECTION 10: Wiring.............................................................. 42
10.1 Line Voltage Thermostat Wiring............................... 42
10.2 Low Voltage Thermostat with One Burner............... 42
10.3 Low Voltage Thermostat Wiring with Multiple Burners. 43
10.4 Internal Wiring.......................................................... 43
10.5 Ladder Diagram ....................................................... 44
10.6 Electrical Connection to the Burner ......................... 44
SECTION 11: Operation and Maintenance.......................... 45
11.1 S e q uence of Operation ............................................ 45
11.2 To Shut Off Heater.................................................... 45
11.3 To Start Heater ......................................................... 45
11.4 Pre-Season Maintenance and Annual Inspection..... 45
11.5 Maintenance Checklist ............................................. 46
SECTION 12: Troubleshooting............................................. 48
12.1 Honeywell SmartValve
12.2 Troubleshooting Flow Chart..................................... 50
12.3 Manifold Gas Pressure Setting ................................ 52
SECTION 13: Replacement Parts ........................................ 53
SECTION 14: General Specifications .................................. 56
14.1 Material Specifications............................................. 56
14.2 Heater Specifications............................................... 56
14.3 Suspension Specifications....................................... 56
14.4 Controls Specifications ............................................ 56
SECTION 15: The ROBERTS GORDON
Warranty ......................................................... 57
®
II Troubleshooting.............. 49
®
VANTAGE® II
Prin ted in U.S.A.
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° Tilt Reflector ........................................................ 6
Figure 7: U-Tube, Standard Reflector........................................7
Figure 8: U-Tube, 45° ................................................................7
Figure 9: U-Tube, Opposite 45° Reflector .................................7
Figure 10: 2-Foot Deco Grille and Protective Grille ...................8
Figure 11: Lower Clearance Shield*..........................................8
Figure 12: Venting .....................................................................8
Figure 13: Major Component Descriptions.............................. 10
Figure 14: Critical Hanger Placement ..................................... 14
Figure 15: Linear Heater Assembly Overview ........................ 15
Figure 16: Linear Heater Layout Overview.............................. 16
Figure 17: Linear Heater Layout Overview (Continued) .......... 17
Figure 18: U-Tube Heater Assembly O
Figure 19: U-Tube Heater Layout Overview ............................26
Figure 20: U-Tube Heater Layout Overview (Continued) ........ 27
Figure 21: Reflector Joint Detail .............................................. 29
Figure 22: Tube Termination ...................................................35
Figure 23: Gas Connection with Flexible Gas Hose ...............41
verview ...................... 25
LIST OF TABLES
Table 1: Contents of the Burner Carton.................................. 11
Table 2: Contents of Core and Extension Packages .............. 11
Table 3: Component Package Guide......................................12

SECTION 1: HEATER SAFETY

Yo ur Safety is Important to Us! This symbol is used throughout the manual to notify you of possi­ble fire, electrical or burn hazards. Please pay special attention when reading and following the
warnings in these sections. Installation, service and annual inspection of heater must be done by a contractor qualified in the installa­tion and service of gas-fired heating equipment.
Read this manual carefully before installation, opera­tion or service of this equipment.
This heater is designed for heating nonresidential indoor spaces. Do not install in residential spaces. These instructions, the layout drawing, local codes and ordinances, and applicable standards that apply to gas piping, electrical wiring, venting, etc. must be thoroughly understood before proceeding with the installation.
Protective gear is to be worn during installation, operation and service. Thin sheet metal parts, includ- ing the aluminum reflector portion of the heater and the various venting components, ha
ve sharp edges. To p r e vent injury, the use of work gloves is recom­mended. The use of gloves will also prevent the transfer of body oils from the hands to the surface of the reflector.
SECTION 1: HEATER S AFETY

1.1 Manpower Requirements

To p r e
vent personal injury and damage to the heater,
two persons will be required for installation.

1.2 Safety Labels and Their Placement

Product safety signs or labels should be replaced by the product user when they are no longer legible. Please contact Roberts-Gordon or your ROBERTS GORDON
®
independent distributor to obtain replacement signs or labels. See Page 2, Figure 1 through Page 3, Figure 2.

1.3 California Proposition 65

In accordance with California Proposition 65 require- ments, a warning label must be placed in a highly visible location on the outside of the equipment (i.e., near equipment’s serial plate). See label placement drawing on Page 2, Figure 1 for label location. Avoid placing label on areas with extreme heat, cold, corro­sive chemicals or other elements. To order additional labels, please contact Roberts-Gordon LLC or your
®
ROBERTS GORDON
independent distributor.
Before installation, check that the local distribution conditions, nature of gas and pressure, and adjust- ment of the appliance are compatible.
This heater must be applied and operated under the general concepts of reasonable use and installed using best building practices. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do no play with the appliance.
For additional copies of the Installation, Operation and Service Manual, please contact Roberts-Gordon LLC.
1
CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Logo Label
Rating Plate Label
Bottom Panel
Top Panel
Gas Connection Label
Proposition 65 Label
Description Part Number
Logo Label 91013200 Rating Plate Label 91010401 Gas Connection Label 91018122 Proposition 65 Label 91070015

FIGURE 1: Top and Bottom Panel Label Placement

2

FIGURE 2: Side and Back Panel Label Placement

Description Part Number
Clearances to Combustibles Label 91013415 Wiring Label 91013300 Low Voltage Connection Label 91039700 Vent Length Label 91039500 Lighting Instruction Plate Label 91029602
Lighting Instruction Plate Label
Thermostat Connection Label
Vent Length Label
Back Panel
Control Side Panel
SECTION 1: HEATER S AFETY
Clearances to Combustibles Label
Control Side Panel (Inside) Wiring Label
3
CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

SECTION 2: INSTALLER RESPONSIBILITY

The installer is responsible for the following:
• To install the heater, as well as the gas and electri­cal supplies, in accordance with applicable specifi­cations and codes. Roberts-Gordon recommends the installer contact a local Building Inspector or Fire Marshal for guidance.
• To use the information given in a layout drawing and in the manual together with the cited codes and regulations to perform the installation.
• To install the heater in accordance with the clearances to combustibles.
• To furnish all needed materials not furnished as standard equipment.
• To plan location of supports.
• To provide access to burners for servicing on all sides for burner removal.
• To provide the owner with a copy of this installa­tion, operation and service manual.
• To never use heater as support for a ladder or
other access equipment and never hang or sus- pend anything from heater.
•To ensure there is adequate air circulation around
the heater and to supply air for combu
stion, venti­lation and distribution in accordance with local codes.
• To safely and adequately install heater using materials with a minimal working load of 75 lbs (33 kg).
• To ensure the heater is placed in a approved application.

2.1 Wall Tag

A laminated wall tag is available for the heater as a permanent reminder of the safety instructions and the importance of the required clearances to com­bustibles. Please contact Roberts-Gordon or your ROBERTS GORDON
®
independent distributor to obtain the wall tag. Affix the tag by peeling off the backing of the adhesive strips on the rear surface and position the tag on a wall near the heater (e.g. thermostat or ROBERTS GORDON
®
Controller).
A copy of the wall tag (P/N 91037912) is illustrated on the back cover. For an immediate solution, you may affix this copy on the wall near the heater.
Know your model number and installed configuration. Model number and installed configuration are found
on the burner and in the Installation, Operation and Service Manual. See Page 5, Figure 3 through Page 8, Figure 12. Write the proper clearance dimensions in permanent ink according to your model number and configuration in the open spaces on the tag.

2.2 Corrosive Chemicals

CAUTION
Product Damage Hazard
Do not use heater in area containing corrosive chemicals.
Refer to appropriate Material Safety Data Sheets (MSDS).
Failure to follow these instructions can result in product damage.
Roberts-Gordon cannot be responsible for 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.
* Halogenated Hydrocarbons are a family of chemical compounds characterized by the presence of halogen elements (fluorine, chlorine, bromine, etc.). These com­pounds are frequently used in refrigerants, cleaning agents, solvents, etc. If these compounds enter the air supply of the burner, the life span of the heater compo­nents will be greatly reduced. An outside air supply must be provided to the burners whenever the presence of these compounds is suspected. Warranty will be invalid if the heater is exposed to halogenated hydrocarbons.

2.3 National Standards and Applicable Codes

All appliances must be installed in accordance with the latest revision of the applicable standards and national codes. This refers also to the electric, gas and venting installation. Note: Additional standards for installations in Public Garages, Aircraft Hangars, etc. may be applicable.
4

SECTION 3: CLEARANCES TO COMBUSTIBLES

WARNING
Fire Hazard
Keep all flammable objects, liquids and vapors the minimum required clearances 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.

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. Maintain clear- ances to combustibles at all times for safety.
Clearances for all heater models are located on the burner of the heater and on Page 5, Figure 3 through Page 8, Figure 12 in this manual. Check the clear- ances on each burner for the model heater being installed to make sure the product is suitable for your application and the clearances are maintained. Read and follow the safety guidelines below:
• Keep gasoline or other combustible materials including flammable objects, liquids, dust or vapors away from this heater or any other appli- ance.
• The stated clearances to combustibles represents a surface temperature of 90° F (50°C) above room temperature. Building materials with a low heat tol- erance (such as plastics, vinyl siding, canvas, tri­ply, etc) may be subject to degradation at lower temperatures. It is the installer’s responsibility to assure that adjacent materials are protected from degradation.
• Maintain clearances from heat sensitive equipment and workstations.
• Maintain clearances from vehicles parked below the heater.
• Maintain clearances from swinging and overhead doors, overhead cranes, vehicle lifts, partitions, storage racks, hoists, building construction, etc.
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.
SECTION 3: CLEARANCES TO COMBUSTIBLES
• In locations used for the storage of combustible materials, signs must be posted to specify the maximum permissible stacking height to maintain required clearances from the heater to the com­bustibles. Signs must be posted adjacent to the heater thermostat. In the absence of a thermostat, signs must be posted in a conspicuous location.
• Consult local Fire Marshal, Fire Insurance Carrier or other authorities for approval of proposed instal­lation when there is a possibility of exposure to combustible airborne materials or vapors.
• Hang heater in accordance to the minimum sus- pension requirements
• If the radiant tubes must pass through the building structure, be sure that adequate sleeving and fire stop is installed to prevent scorching and/or fire hazard.
on Page 14, Figure 14
.
FIGURE 3: STANDARD REFLECTOR
Model ABCDABCD
CTH2-40 6 27 53 27 16 69 135 69
CTH2-60 6 35 63 35 16 89 161 89
CTH2-80 6 38 66 38 16 97 168 97
CTH2-100 6 40 71 40 16 102 181 102
CTH2-125 6 46 77 46 16 117 196 117
CTH2-150 6 50 80 50 16 127 204 127
CTH2-175 8 52 82 52 21 133 209 133
(inches) (centimeters)
5
CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
A
C
D
B
A
C
D
B
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
Model ABCDABCD
CTH2-40 6 9 53 44 16 23 135 112
CTH2-60 6 9 63 47 16 23 161 120
CTH2-80 6 9 70 54 16 23 178 138
CTH2-100 6 9 77 59 16 23 196 150
CTH2-125 6 9 83 65 16 23 211 166
CTH2-150 6 9 86 69 16 23 219 176
CTH2-175 8 9 88 73 21 23 224 186
FIGURE 5: TWO SIDE REFLECTORS
Model ABCDABCD
CTH2-40 6 15 53 15 16 39 135 39
CTH2-60 6 23 66 23 16 59 168 59
CTH2-80 6 25 72 25 16 64 183 64
CTH2-100 6 27 78 27 16 69 199 69
CTH2-125 6 32 84 32 16 82 214 82
CTH2-150 6 35 88 35 16 89 224 89
CTH2-175 8 40 91 40 21 102 232 102
(inches) (centimeters)
(inches) (centimeters)
FIGURE 6: 45° TILT REFLECTOR
(inches) (centimeters)
Model ABCDABCD
CTH2-40 8 8 51 46 21 21 130 117
CTH2-60 8 8 60 54 21 21 153 138
CTH2-80 8 8 66 60 21 21 168 153
CTH2-100 10 8 74 64 26 21 188 163
CTH2-125 10 8 78 69 26 21 199 176
CTH2-150 12 8 84 74 31 21 214 188
CTH2-175 12 8 85 79 31 21 216 201
6
NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.
A
C
D
B
B
C
D
A
A
C
D
B
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
Model ABCDABCD
CTH2-40
CTH2-60 6 35 63 30 16 89 161 77
CTH2-80 6 38 69 37 16 97 176 94
CTH2-100 6 40 76 39 16 102 194 100
CTH2-125 6 46 79 43 16 117 201 110
CTH2-150 6 50 84 47 16 127 214 120
CTH2-175 8 54 87 51 21 138 221 130
FIGURE 8: U-TUBE, 45°
Model ABCDABCD
SECTION 3: CLEARANCES TO COMBUSTIBLES
(inches) (centimeters)
- UNAPPROVED -
- UNAPPROVED -
(inches) (centimeters)
CTH2-40
- UNAPPROVED - - UNAPPROVED -
CTH2-60 8 8 60 42 21 21 153 107
CTH2-80 8 8 66 46 21 21 168 117
CTH2-100 8 8 74 52 21 21 188 133
CTH2-125 8 8 78 61 21 21 199 155
CTH2-150 8 8 84 66 21 21 214 168
CTH2-175 8 8 85 70 21 21 216 178
FIGURE 9: U-TUBE, OPPOSITE 45° REFLECTOR
(inches) (centimeters)
Model ABCDABCD
CTH2-40
CTH2-60 8 54 60 22 21 138 153 56
CTH2-80 8 60 66 22 21 153 168 56
CTH2-100 10 64 74 22 26 163 188 56
CTH2-125 10 70 78 22 26 178 199 56
CTH2-150 12 74 84 22 31 188 214 56
CTH2-175 12 76 85 22 31 194 216 56
- UNAPPROVED - - UNAPPROVED -
7
CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
A
C
D
B
A
C
D
B
Radiant Tubes
Vent Pipes
Unvented
Vented
A
E
F
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)
Model ABCDABCD
CTH2-40 6 27 53 27 16 69 135 69
CTH2-60 6 35 63 35 16 89 161 89
CTH2-80 6 38 66 38 16 97 168 97
CTH2-100 6 40 71 40 16 102 181 102
CTH2-125 6 46 77 46 16 117 196 117
CTH2-150 6 50 80 50 16 127 204 127
CTH2-175 8 52 82 52 21 133 209 133
FIGURE 11: LOWER CLEARANCE SHIELD*
(inches) (centimeters)
Model ABCDABCD
CTH2-40 6 34 27 34 16 87 69 87
CTH2-60 6 39 33 39 16 100 84 100
CTH2-80 6 40 38 40 16 102 97 102
CTH2-100 6 50 44 50 16 127 112 127
CTH2-125 6 54 48 54 16 138 122 138
CTH2-150 6 55 50 55 16 140 127 140
*When installed in the first 10' (3 m).
FIGURE 12: VENTING
CTH2-175
- UNAPPROVED - - UNAPPROVED -
(inches) (centimeters)
Model A E F A E F
CTH2-40 14 18 18 36 46 46
CTH2-60141818364646
CTH2-80 20 24 18 51 61 46
CTH2-100 20 24 18 51 61 46
CTH2-125 20 24 18 51 61 46
CTH2-150 20 30 18 51 77 46
CTH2-175 20 30 18 51 77 46
8

SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES

SECTION 4: NATIONAL STANDARDS AND APPLICABLE C ODES

4.1 Gas Codes

The type of gas appearing on the nameplate must be the type of gas used. Installation must comply with national and local codes and requirements of the local gas company.
United States: Refer to National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest revision.
Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.

4.2 Aircraft Hangars

Installation in aircraft hangars must be in accordance with the following codes:
United States: Refer to Standard for Aircraft Hangars, NFPA 409 - latest revision.
Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.
In aircraft storage and servicing areas, heaters shall be installed at least 10' (3 m) above the upper surface of wings or of engine enclosures of the highest aircraft which may be housed in the hangar. The measurement shall be made from the wing or engine enclosure (whichever is higher from the floor) to the bottom of the heater.
• In shops, offices and other sections of aircraft hangars communicating with aircraft storage or servicing areas, heaters shall be installed not less than 8' (2.4 m) above the floor.
• Suspended or elevated heaters shall be so located in all spaces of aircraft hangars that they shall not be subject to injury by aircraft, cranes, movable scaffolding or other objects. Provisions shall be made to assure accessibility to suspended heaters for recurrent maintenance purposes.

4.3 Public Garages

Installation in garages must be in accordance with the following codes:
United States: Refer to Standard for Parking Structures NFPA 88A - latest revision or the Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A - latest revision. Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.
• Heaters must not be installed less than 8' (2.4 m) above the floor. Minimum clearances to combustibles must be maintained from vehicles parked below the heater.
• When installed over hoists, minimum clearances to combustibles must be maintained from the upper most point of objects on the hoist.

4.4 Electrical

The heater must be electrically grounded in accordance with the following codes:
United States: Refer to National Electrical
®
Code
, NFPA 70 - latest revision. Wiring must
conform to the most current National Electrical
®
Code
, local ordinances and any special
diagrams furnished.
Canada: Refer to Canadian Electrical Code, CSA C22.1 Part 1 - latest revision.

4.5 Venting

The venting must be installed in accordance with the requirements within this manual and the following codes:
United States: Refer to National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest revision.
Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.

4.6 High Altitude

These heaters are approved for installations up to 2000' (610 m)(US), 4500' (1370 m)(Canada) without modification. Consult factory if US installation is above 2000' (610 m) or Canadian installation is above 4500' (1370 m).
9
CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Burner with Tube Gasket
Must be installed with the
flame observation window facing down.
Reflector (Aluminum or Stainless Steel)
Alternate overlap as shown on overview and on Page 16, Figure 16. Minimum overlap is 6" (16 cm).
Tube and Reflector Hanger with Clamp Package
Position this hanger no more than 4" (10 cm) away from the burner.
Coupling Assembly with Lock
Reflector End Cap
Punch out center section to accommodate tube.
Tube and Reflector Hanger
Suspend system from these hangers.
Flex Gas Line with Shut Off Cock
Tube
Hot rolled or heat treated aluminized tube supplied in 10' (3 m) lengths.
Burner Tube
Supplied in 10
'
(3 m) lengths. Burner tube is always the first tube after the burner.
Reflector Support Strap & Wire Form
Turbulator
Turbulator must be installed in the last standard section of tube. Turbulator is not required on the CTH2-125/150/175. For installation see Page 20, Section 6.4.
Vent Adapter

SECTION 5: MAJOR COMPONENTS

FIGURE 13: Major Component Descriptions

10
SECTION 5: MAJOR COMPONENTS

5.1 Standard Parts List Table 1: Contents of the Burner Carton

Part No. Description CTH2-40 CTH2-60 CTH2-80 CTH2-100 CTH2-125 CTH2-150 CTH2-175

030XXXXX Burner Assembly (Rate and Fuel Varies) 1 1 1 1 1 1 1
02568200 Gasket (Burner to Burner Tube) 1 1 1 1 1 1 1
130100NA Installation, Operation and Service Manual 1 1 1 1 1 1 1
94273914 Hex Head Bolts 5/16-18 Rolok 4 4 4 4 4 4 4
96411600 Split Lock washer 4 4 4 4 4 4 4
91201708 Pipe Nipple (Black) 1/2” NPT x 4” 1 1 1 1 1 1 1
91317300 1/4" Quick Disconnect (Wire) 2 2 2 2 2 2 2
*91412200 Flexible Stainless Steel Gas Hose - 1/2" NPT (US Models Only) 1 1 1 1 1
*91412204 Flexible Stainless Steel Gas Hose - 3/4" NPT (US Models Only) - - - - - 1 1
03051503 Turbulator Adapter 1 1 1 1 - - -
03051504 Turbulator Aluminized Steel 2 4 4 2 - - -
03051505 Turbulator Stainless Steel 1 - - - - - -
*Canadian Models: Rubber (Type 1) Gas Hoses available as an accessory.
See Page 40, Section 9
.
Table 2: Contents of Core and Extension Packages

Core Packages Extension Packages

Hot Rolled Aluminized Hot Rolled Aluminized

Part No. Description

91409300

91409408

03051101

03051601

Tube, Hot Rolled Steel, 10
'

(3 m)

Tube, HT Aluminized, 10' (3 m)
Burner Tube, ALUMI-THERM® Steel, 10' (3 m)
Burner Tube, HT ALUMI-THERM® Steel, 10' (3 m)
01312700 Coupling Assembly 1 2 3 - 1 2 3 1 2 3 4 1 2 3 4

02750303

Standard Reflector, 8
'
(3.5 m)
02750800 End Cap 2 2 2 2 2 2 2 - - - - - - - -
03090100Tube and Reflector Hanger 345234512341234
91907302S-Hook 345234512341234
03050010 Reflector Support Package (Strap, Wire Form, Screws) 2 3 5 1 2 3 5 2 3 4 6 2 3 4 6
91107720 U-Clip Package 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
90502700 Vent Adapter 1 1 1 1 1 1 1 - - - - - - - -
01318901 Tube Clamp Package 1 1 1 1 1 1 1 - - - - - - - -

Part Number

'
30
'
40
'
10
'
20
'
30
'
40
'
10
'
20
'
30
'
40
'
10
'
20
'
30
'
20

(6m)

(9m)

(12m)

(3m)

(6m)

(9m)

(12m)

(3m)

(6m)

(9m)

(12m)

(3m)

(6m)

(9m)

40

(12m)

123- - - -1234- - - -
----123----1234
-11--11--------
1--11----------
346234623462346
'
CP20HRS
CP30HRS
CP40HRS
CP10ALUM
CP20ALUM
CP30ALUM
EXP10HRS
CP40ALUM
EXP20HRS
EXP30HRS
EXP40HRS
EXP10ALUM
EXP20ALUM
EXP30ALUM
11
EXP40ALUM
CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Table 3: Component Package Guide
Tubing Length Core Packages
Model
Minimum Standard Aluminized
CTH2-40 10’ (3m) - CP10ALUM
CTH2-60 20’ (6m) CP20HRS CP20ALUM
CTH2-80 20’ (6m) CP20HRS CP20ALUM
CTH2-100 30’ (9m) CP30HRS CP30ALUM
CTH2-125 40’ (12m) CP40HRS CP40ALUM
CTH2-150 50’ (15m) CP30HRS + EXP20HRS CP30ALUM + EXP20ALUM
CTH2-175 60’ (18m) CP30HRS + EXP30HRS CP30ALUM + EXP30ALUM
Additional tubing length may be added to heater. Tubing must be heat-treated, aluminized or porcelain coated. Any additional tubing lengths are considered as vent length for length determination. Maximum venting length for minimum heater length is 45' (13.7 m) total.
12
SECTION 6: HEATER I NSTALLATION
WARNING
Severe Injury Hazard
Secure burner to burner tube with bolts and lockwashers.
Hang heater with materials with a minimum working load of 75 lbs (33 kg).
Failure to follow these instructions can result in death, injury or property damage.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation, operation and service.
Edges are sharp.
Failure to follow these instructions can result in injury.

SECTION 6: HEATER INSTALLATION

Typical installation configurations are shown in Figure 14. Expansion and contraction of the tube dictates that the minimum suspension lengths in the table on Page 14, Figure 14 be maintained.
To ensure your safety, and comply with the terms of the warranty, all units must be installed in accor­dance with these instructions.
The gas or the electrical supply lines must not be
used to support the heater.
Do not locate the gas or electric supply lines directly over the path of the flue products from the heater.
The heater must be installed in a location that is readily accessible for servicing.
The heaters must be installed in accordance with clearances to combustibles as indicated on the rating plate and in this instruction manual.
The minimum and maximum gas inlet pressures must be maintained as indicated on the rating plate.
13
CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Hanger
Side View
Must Be Within 4" (10 cm) Front View
S-hooks
Reflector
Hanger
45° Angle
* Allows for thermal expansion of system
Typical Suspension Details
Rod 3/8"
Beam Clamp
Concrete Beam
Wood Beam
Washers
Locknut
Screw Hook
3/8"
24" min.*
(61 cm)
X*
Anchor
S-hooks
Chain Size
3/16"
Minimum
Turnbuckle
Not Included
Description Part Number
S-Hook 91907302 Tube/Reflector Hanger 03090100
Run Length Typical Expansion Minimum “X” Length
10' (3 m) - 50' (15 m) ±1" (3 cm) 12" (305 mm) 51' (15 m) - 60' (18 m) ±2" (5 cm) 18" (457 mm) 61' (18 m) - 70' (24 m) ±3" (8 cm) 24" (609 mm)

FIGURE 14: Critical Hanger Placement

14

FIGURE 15: Linear Heater Assembly Overview

Tube
Reflector
Reflector End Cap
Reflector Support
Burner
Coupling
U-Clips
Burner Tube
Tube and Reflector Hanger
Tube Clamp
Package
Vent Adapter
Turbulator
(With Select Models)
SECTION 6: HEATER I NSTALLATION
15
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