Page 1
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.
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.
®
Vantage
II
Gas-Fired, Low Intensity
Unitary Heater
Installation, Operation &
Service Manual
CTH2-40
CTH2-60
CTH2-80
CTH2-100
CTH2-125
Quality in Any Language™
© 2008 Roberts-Gordon LLC
Roberts-Gordon LLC
1250 William Street
P.O . B o x 44
Buffalo, New York 14240-0044
Telephone: 716.852.4400
Fax: 716.852.0854
Toll Free: 800.828.7450
www.rg-inc.com
www.radiantheaters.com
CTH2-150
CTH2-175
P/N 130100NA Rev. K 11/08
Page 2
Page 3
© 2008
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
SECTION 2: Installer Responsibility ..................................... 3
2.1 Wall Tag .......................................................................3
2.2 Corrosive Chemicals.................................................... 3
2.3 National Standards and Applicable Codes ..................3
SECTION 3: Clearances to Combustibles............................. 4
3.1 Required Clearances to Combustibles......................... 4
SECTION 4: National Standards and Applicable Codes .....8
4.1 Gas Codes...................................................................8
4.2 Aircraft Hangars........................................................... 8
4.3 Public Garages ............................................................ 8
4.4 Electrical ......................................................................8
4.5 Venting.........................................................................8
4.6 High Altitude ................................................................8
SECTION 5: Major Components............................................9
5.1 Standard Parts List .................................................... 10
SECTION 6: Heater Installation............................................12
6.1 Burner Tube Installation ............................................ 17
6.2 Tube Clamp Package Installation..............................17
6.3 Coupling and Tube Assembly....................................18
6.4 Turbulator Installation ................................................ 19
6.5 Reflector Installation .................................................. 20
6.6 Burner Installation......................................................22
SECTION 7: Optional Heater Accessories..........................23
7.1 U-Tube Configuration..................................................23
7.2 Elbow Package Configuration.....................................26
7.3 Reflector Side Extension ............................................ 28
7.4 Lower Clearance Shield Installation ...........................29
7.5 Two-Foot Decorative Grille Installation ....................... 29
7.6 Protective Grille Installation ........................................ 31
SECTION 8: Venting..............................................................32
8.1 General Venting Requirements..................................32
8.2 Unvented Operation................................................... 32
8.3 Horizontal Venting......................................................32
8.4 Vertical Venting.......................................................... 32
8.5 Unvented Operation Tube Termination ...................... 33
8.6 Length Requirements ................................................33
8.7 Horizontal Ventilation 4" (10 cm) Pipe........................33
8.8 Vertical Ventilation 4" (10 cm) Pipe............................33
8.9 Common Sidewall Venting.........................................34
8.10 Common Vertical Venting ........................................35
8.11 Outside Combustion Air Supply ............................... 36
SECTION 9: Gas Piping........................................................38
SECTION 10: Wiring.............................................................. 40
10.1 Line Voltage Thermostat Wiring............................... 40
10.2 Low Voltage Thermostat with One Burner ............... 40
10.3 Low Voltage Thermostat Wiring with Multiple
Burners.................................................................... 41
10.4 Internal Wiring ......................................................... 41
10.5 Ladder Diagram....................................................... 42
10.6 Electrical Connection to the Burner ......................... 42
SECTION 11: Operation and Maintenance.......................... 43
11.1 Sequence of Operation ............................................ 43
11.2 To Shut Off Heater.................................................... 43
11.3 To Start Heater ......................................................... 43
11.4 Pre-Season Maintenance and Annual Inspection..... 43
11.5 Maintenance Checklist ............................................. 44
SECTION 12: Troubleshooting............................................. 46
12.1 Honeywell SmartValve
12.2 Troubleshooting Flow Chart ..................................... 47
12.3 Manifold Gas Pressure Setting ................................ 49
SECTION 13: Replacement Parts ........................................ 50
SECTION 14: General Specifications.................................. 52
14.1 Material Specifications............................................. 52
14.2 Heater Specifications............................................... 52
14.3 Suspension Specifications....................................... 52
14.4 Controls Specifications ............................................ 52
SECTION 15: The ROBERTS GORDON
Warranty......................................................... 53
®
II Troubleshooting .............. 46
®
VANTAGE® II
Printed in U.S.A.
Page 4
Page 5
TABLE OF FIGURES
Figure 1: Top and Bottom Panel Label Placement....................1
Figure 2: Side and Back Panel Label Placement......................2
Figure 3: Standard Reflector ..................................................... 4
Figure 4: One Side Reflector.....................................................5
Figure 5: Two Side Reflectors ...................................................5
Figure 6: 45° Tilt Reflector ........................................................ 5
Figure 7: U-Tube, Standard Reflector........................................6
Figure 8: U-Tube, 45°................................................................6
Figure 9: U-Tube, Opposite 45° Reflector .................................6
Figure 10: 2-Foot Deco Grille, 1-Foot Deco Grille and
Protective Grille........................................................ 7
Figure 11: Lower Clearance Shield...........................................7
Figure 12: Venting .....................................................................7
Figure 13: Major Component Descriptions................................ 9
Figure 14: Critical Hanger Placement..................................... 13
Figure 15: Linear Heater Assembly Overview ........................ 14
Figure 16: Linear Heater Layout Overview.............................. 15
Figure 17: Linear Heater Layout Overview (Continued).......... 16
Figure 18: U-Tube Heater Assembly Overview ...................... 23
Figure 19: U-Tube Heater Layout Overview ............................24
Figure 20: U-Tube Heater Layout Overview (Continued) ........25
Figure 21: Reflector Joint Detail ..............................................27
Figure 22: Tube Termination ...................................................33
Figure 23: Gas Connection with Flexible Gas Hose ............... 39
LIST OF TABLES
Table 1: Contents of the Burner Carton..................................10
Table 2: Contents of Core and Extension Packages.............. 10
Table 3: Component Package Guide......................................11
Page 6
Page 7
SECTION 1: HEATER S AFETY
Logo Label
Rating Plate Label
Bottom
Panel
Top Panel
Gas Connection Label
Description Part Number
Logo Label 91013200
Rating Plate Label 91010401
Gas Connection Label 91018122
SECTION 1: HEATER SAFETY
Your 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,
FIGURE 1: Top and Bottom Panel Label Placement
including the aluminum reflector portion of the heater
and the various venting components, have sharp
edges. To prevent 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.
Before installation, check that the local distribution
conditions, nature of gas and pressure, and adjustment of the appliance are compatible.
1.1 Manpower Requirements
To prevent 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 are legible.
Please contact Roberts-Gordon or your ROBERTS
GORDON
®
independent distributor to obtain
replacement signs or labels. See Page 1, Figure 1
through Page 2, Figure 2.
1
Page 8
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
Clearances to Combustibles Label
Control Side Panel
Control Side Panel (Inside) Wiring Label
Description Part Number
Clearances to Combustibles Label 91013415
Wiring Label 91013300
Thermostat Connection Label 91037902
Vent Length Label 91039500
Lighting Instruction Plate Label 91029602
Lighting Instruction Plate Label
Thermostat
Connection
Label
Vent Length Label
Back Panel
FIGURE 2: Side and Back Panel Label Placement
2
Page 9
SECTION 2: INSTALLER R ESPONSIBILITY
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 suspend anything from heater.
• To ensure there is adequate air circulation around
the heater and to supply air for combustion, 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.
on the burner and in the Installation, Operation and
Service Manual. See Page 4, Figure 3 through Page
7, 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:
Do not use heater in an area containing corrosive
chemicals. Avoid the use of corrosive chemicals to
ensure a longer life of the burner, tubing and other
parts.
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.
Know your model number and installed configuration.
Model number and installed configuration are found
3
Page 10
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
WARNING
Fire Hazard
Some objects can catch fire or explode
when placed close to heater.
Keep all flammable objects, liquids and
vapors the required clearances to
combustibles away from heater.
Failure to follow these instructions can
result in death, injury or property damage.
SECTION 3: CLEARANCES TO COMBUSTIBLES
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. 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 4, Figure 3 through
Page 7, Figure 12 in this manual. Check the clearances 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 appliance.
• The stated clearances to combustibles represents
a surface temperature of 90° F (32°C) above room
temperature. Building materials with a low heat tolerance (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 material,
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.
• 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 suspension requirements
on Page 13, Figure 14
.
• 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.
FIGURE 3: STANDARD REFLECTOR
Model A B C D A B C D
CTH2-40 6 27 53 27 16 69 135 69
CTH2-60 6 35 63 35 16 89 161 89
4
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)
Page 11
NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.
A
C
D
B
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 4: ONE SIDE REFLECTOR
Model A B CDABCD
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 A B CDABCD
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
SECTION 3: CLEARANCES TO C OMBUSTIBLES
(inches) (centimeters)
(inches) (centimeters)
FIGURE 6: 45° TILT REFLECTOR
(inches) (centimeters)
Model A B CDABCD
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
5
Page 12
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
A
C
D
B
B
C
D
A
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 7: U-TUBE, STANDARD REFLECTOR
Model A B CDABCD
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 A B CDABCD
(inches) (centimeters)
- UNAPPROVED -
- UNAPPROVED -
(inches) (centimeters)
CTH2-40
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
Model A B CDABCD
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
6
CTH2-175 12 76 85 22 31 194 216 56
- UNAPPROVED - - UNAPPROVED -
(inches) (centimeters)
- UNAPPROVED - - UNAPPROVED -
Page 13
SECTION 3: CLEARANCES TO C OMBUSTIBLES
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, 1-FOOT DECO GRILLE AND PROTECTIVE GRILLE
(inches) (centimeters)
Model A B CDABCD
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 A B CDABCD
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
CTH2-175
*When installed in the first 10' (3 m).
FIGURE 12: VENTING
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
- UNAPPROVED - - UNAPPROVED -
(inches) (centimeters)
Model A E F A E F
7
Page 14
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
SECTION 4: NATIONAL STANDARDS AND
APPLICABLE CODES
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 NFPA 54/ANSI Z223.1 - latest
revision, National Fuel Gas Code. Canada: Refer
to CSA B149.1 Natural Gas and Propane
Installation Code.
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
Standard CSA B149.1 Natural Gas and Propane
Installation Code.
• 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 the
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: 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
CSA B149.1 Natural Gas and Propane
Installation Code.
• 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 NFPA 54/ANSI Z223.1 latest revision, National Fuel Gas Code.
8
Canada: Refer to CSA B149.1 Natural Gas and
Propane Installation Code.
4.6 High Altitude
These heaters are approved for installations up
to 2000' (US), 4500' (Canada) without
modification. Consult factory if US installation is
above 2000' (610 m) or Canadian installation is
above 4500' (1370 m).
Page 15
SECTION 5: MAJOR COMPONENTS
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 15, 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 19,
Section 6.4.
Vent Adapter
FIGURE 13: Major Component Descriptions
SECTION 5: MAJOR COMPONENTS
9
Page 16
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
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 38, 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 2312341234
02750303
Standard Reflector, 8' (3.5 m)
02750800 End Cap 2 222222- -------
03090100 Tube and Reflector Hanger 3 45234512341234
91907302 S-Hook 3 45234512341234
03050010 Reflector Support Package (Strap, Wire Form, Screws) 2 35123523462346
91107720 U-Clip Package 1 11111111111111
90502700 Vent Adapter 1 111111- -------
01318901 Tube Clamp Package 1 111111- -------
20
'
30
'
40
'
10
'
20
'
30
'
40
'
10
'
20
'
30
'
40
'
10
'
20
'
30
'
(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
'
10
Part Number
CP20HRS
CP30HRS
CP40HRS
CP10ALUM
CP20ALUM
CP30ALUM
CP40ALUM
EXP10HRS
EXP20HRS
EXP30HRS
EXP40HRS
EXP10ALUM
EXP20ALUM
EXP30ALUM
EXP40ALUM
Page 17
Table 3: Component Package Guide
SECTION 5: MAJOR COMPONENTS
Model
Tubing Length Core Packages
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.
11
Page 18
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
WARNING
Severe Injury Hazard
Burner is secured to burner
tube by 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.
SECTION 6: HEATER INSTALLATION
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.
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 13, Figure 14 be maintained.
12
Page 19
FIGURE 14: Critical Hanger Placement
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)
SECTION 6: HEATER I NSTALLATION
13
Page 20
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
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)
FIGURE 15: Linear Heater Assembly Overview
14
Page 21
FIGURE 16: Linear Heater Layout Overview
g
c
b
d
f
g
c
b
de
f
g
c
b
de
e
f
g
c
b
de
e e
f
Burner
Reflector
Tube
Tube/Reflector
Hanger
Coupling
Assembly
Vent Adapter
LEGEND
a = 14" (36 cm)
reflector width (not shown)
b = 2" (5 cm)
end cap to burner
c = 2" (5 cm)
end cap to hanger
d = 7'6" (229 cm)
distance first hanger
e = 10' (305 cm)
distance between hangers
f = 9.5" (24 cm)
burner height
g = 17.5" (44 cm)
burner length
10' Tube Length
20' Tube Length
30' Tube Length
40' Tube Length
SECTION 6: HEATER I NSTALLATION
15
Page 22
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
g
c
b
de
e e e
f
50' Tube Length
g
c
b
de
e e e e
f
60' Tube Length
b
f
g
c
de
e e e e e
70' Tube Length
b
b
f
g
c
de
e e e e e
80' Tube Length
b
e
FIGURE 17: Linear Heater Layout Overview (Continued)
16
Page 23
Step 6.1 Burner Tube Installation
7' 6" ± 1'
(229 cm ± 25 cm)
NOTE:
Tubing requires a downward
slope of 1/2" (1.3 cm)
per 20' (6 m) away
from burner.
S-hook
Burner Tube
Hanger
Offset mounting
hole must be
to the top.
Weld seam
must be to the
bottom of the tube.
Description Part Number
Burner Tube 03051XXX
S-Hook 91907302
Tube/Reflector Hanger 03090100
Bolt
Tube Clamp
Flat
Washer
Nut
(Torque 120 in/lb
13.56 Nm)
Description Part Number
Tube Clamp Package 01318901
Tube Clamp 01396801
Bolt 97113940
Flat Washer 95211600
Nut 92113900
SECTION 6: HEATER I NSTALLATION
Step 6.2 Tube Clamp Package Installation
17
Page 24
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
Tube
Tube
Orient coupling so that
the impact block is in the
2:00 or 10:00 oclock
positions.
Closed
Open
Tab
3" (8 cm) to
4" (10 cm)
Slide Bar/Coupling Lock
Coupling
Wide End
Coupling
Tube
Slide Bar/Coupling Lock
A
Close coupling
with tab.
B
Start Slide bar/Coupling Lock
onto coupling.
C
Insert tubes into coupling.
D
Tighten coupling to join tubes.
Description Part Number
Coupling 01329600
Slide Bar/Coupling Lock 01329700
Tube 91409XXX
Incorrect slide bar
position
Correct slide bar
dimensions
± 2" (5 cm)
Drive slide bar until tight.
End of slide bar should be
within tolerance listed below.
• Repeat Step 6.3 A - D until all tubes are assembled. See Page 19, Section 6.3.2.
Tighten slide bar as shown below.
Step 6.3 Coupling and Tube Assembly
Step 6.3.1 Coupling and Tube Assembly (Continued)
18
Page 25
Step 6.3.2 Coupling and Tube Assembly (Continued)
10' ± 1'
(3 m ± .25 m)
Total Overall
Tube Length
7' 6" ± 1'
(2.3 m ± .25 m)
Model Tube Length Minimum
CTH2-40 10' (3 m)
CTH2-60 20' (6 m)
CTH2-80 20' (6 m)
CTH2-100 30' (9 m)
CTH2-125 40' 12 m)
CTH2-150 50' (15 m)
CTH2-175 60' (18 m)
T
w
i
s
t
Pull String
Tab
Fold tab around outside
of tube nearest to the vent to hold turbulator
in place. Where a vent sleeve
is used, do not fold tab.
Turbulator
2.5' Section
Turbulator
Adapter
Turbulator Section 2.5'
(stainless) used in CTH2-40
heaters must be in the section of
tube nearest to the burner.
Description Part Number
Turbulator Adapter 03051503
Turbulator Section 03051504
Turbulator Section (stainless) 03051505
Tube 91409XXX
Turbulator Installation
Model Tube Section
CTH2-40 1st 10' Section
CTH2-60 2nd 10' Section
CTH2-80 2nd 10' Section
CTH2-100 3rd 10' Section
CTH2-125 N/A
CTH2-150 N/A
CTH2-175 N/A
Turbulator must be installed in
the last standard section of
tube. Turbulator is not required
on the CTH2-125/150/175.
SECTION 6: HEATER I NSTALLATION
Step 6.4 Turbulator Installation
19
Page 26
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
Hanger
Burner Tube
Reflector
Description Part Number
Tube/Reflector Hanger 03090100
Burner Tube 03051XXX
Reflector 02750303
NOTE: All tube surfaces must be covered
by a reflector, except for a U-Tube.
Step 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.
20
Page 27
Step 6.5.1 Reflector, U-Clip and Reflector Support Installation
2. The overlap at the first and second reflector is a slip overlap.
Thereafter, every third reflector joint is a slip overlap. A slip
overlap is achieved by either:
a.) both reflectors lay inside a hanger.
(No reflector support needed.)
b.) using a reflector support with
loose screws at the reflector
overlap.
3. The remaining reflector overlaps require a non-slip
overlap connection. To affix the reflectors together in
a non-slip overlap either:
a.) use reflector support and tight screws.
b.) if both reflectors lay inside a hanger, u-clips or
sheet metal screws may be used.
This section of three reflectors joined together must
be affixed to the tube with at least one reflector support
with tight screws.
Reflector
End Cap
U-clips
1. The first reflector after the burner must be affixed in
the middle of the reflector with a reflector support and
tight screws.
First Reflector
6"
(16 cm)
Overlap must be a
minimum of 6" (16 cm).
Loose screws
loosened 1/16"
(.16 cm) to allow
slippage.
2 A
Slip Overlap
Reflector
Support
2 B
Slip Overlap
Reflector
Tight
Screws
3 B
Non-Slip Overlap
U-clip
(2 Clips per
Non-slip Overlap
Inside a Hanger)
Reflector
3 A
Non-Slip Overlap
Wire Form
Reflector Support
Strap
Tight
Sheet Metal
Screw
Description Part Number
Reflector Support Package 03050010
Wire Form 91908004
Reflector Support Strap 03050000
Screw #8 x 3/4 94320812
U-Clip Package 91107720
Reflector End Cap 027508XX
SECTION 6: HEATER I NSTALLATION
The pictorial drawings of the heater construction in
Section 6 are schematic only and provide a general
guideline of where hangers, reflector supports and
U-clips are to be installed.
To ensure proper expansion and contraction movement of the reflectors, a combination of U-clips and
reflector supports are used. The positioning of reflec-
tor supports and U-clips depends on the individual
installation. Use either pop rivets or sheet metal
screws instead of u-clips when installing end caps
and joint pieces in areas where impact and high wind
may be a factor. The following rules must be
observed.
21
Page 28
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
Lock
Washer
Gasket
Burner
Bolt
(Torque 120 in/lb
13.56 Nm)
S-hook
Burner Tube
Burner must be installed
with the flame observation
window facing down.
Description Part Number
Bolt 94273914
Burner 030XXXXX
Lock Washer 96411600
Gasket 02568200
Step 6.6 Burner Installation
22
Page 29
SECTION 7: OPTIONAL HEATER A CCESSORIES
U-Tube
18" (457 mm)
Center to Center
U-Clips
Reflector
End Caps
Tight U-Bolt
4" (10 cm) U-Bolt,
secured to Burner Tube
with 1/4" (6 mm)
Lockwashers and
1/4-20 Hex Nuts
Loose U-Bolt
4" (10 cm) U-Bolt,
secured to Bracket with
1/4" (6 mm) Lockwashers
and 1/4-20 Hex Nuts on
top and bottom to
allow for tube expansion
and contraction
12
12
1
2
U-Tube, 45°
12
Burner
Reflector
(Turbulator
With Select
Models)
Tube Clamp
Package
Burner
Tube
Tube
U-Tube
Support Bracket
Reflector
Support
Couplings
U-Tube, Standard
U-Tube, Opposite 45°
Nut
Lock Washer
Lock Washer
Nut
U-Bolt
SECTION 7: OPTIONAL HEATER ACCESSORIES
7.1 U-Tube Configuration
Heaters (except CTH2-40) are approved for optional
U-Tube configurations.
The U-Tube may be installed in either a standard horizontal position, a 45° position or in an opposite 45°
position as shown on Page 6, Figure 7 through Fig-
ure 9. When using a U-Tube configuration, the following additional rules must be adhered to:
FIGURE 18: U-Tube Heater Assembly Overview
• A minimum of 10' (3 m) on CTH2-60/80 and a minimum of 15' (4.5 m) on CTH2-100/125/150/175 is
required between the burner and the U-Tube.
• The correct turbulator (
See Page 19, Figure 6.4
)
must be installed in the last standard section of
tube.
• The burner must never be operated in a tilted position.
• The heater must be properly supported at all locations.
See Page 24, Figure 19
.
23
Page 30
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
LEGEND
a = 14" (36 cm)
reflector width (not shown)
b = 2" (5 cm)
end cap to burner
c = 2" (5 cm)
end cap to hanger
d = 7'6" (229 cm)
distance first hanger
e = 10' (305 cm)
distance between hangers
f = 5' (153 cm)
distance between last full tube
hanger and half tube hanger
g = 17.5" (44 cm)
burner length
h = 9.5" (24 cm)
burner height
*Requires the last reflector
before the U-Tube to be cut
in half for use on both sides.
**Requires the last tube before
the U-Tube to be cut in half for
use on both sides.
U-Tube
Burner
Reflector
Tube 10'
Tube/Reflector
Hanger
Coupling
Assembly
c
b
de
g
h
40' Tube Length
c
b
d
f
g
h
30' Tube Length
g
c
b
20' Tube Length*
h
e
Tube 5' **
**
FIGURE 19: U-Tube Heater Layout Overview
24
Page 31
FIGURE 20: U-Tube Heater Layout Overview (Continued)
c
b
de
e
f
g
h
70' Tube Length**
c
b
de
e
g
h
60' Tube Length
c
b
de
f
g
h
50' Tube Length* **
c
b
de
e
g
h
80' Tube Length
e
SECTION 7: OPTIONAL HEATER A CCESSORIES
25
Page 32
CTH2-SERIES INSTALLATION, OPERAT ION AND SERVICE MANUAL
Tube
90° Elbow
Coupling
Description Part Number
Elbow Package 02718702
90° Elbow 01335801
Coupling 01312700
Reflector End Cap 02750800
Reflector Joint Piece 02750900
U-Clip Package 91107720
Minimum Distance Required Between
Burner and Elbow
Model Minimum Distance
CTH2-40 CTH2-60 10' (3 m)
CTH2-80 10' (3 m)
CTH2-100 15' (4.5 m)
CTH2-125 15' (4.5 m)
CTH2-150 15' (4.5 m)
CTH2-175 15' (4.5 m)
Tube
Coupling
Reflector
Reflector
Joint
Flatten Edge
1" (2.5 cm)
Maximum
Scribe
Contour
7.2 Elbow Package Configuration
Step 7.2.1 Elbow Installation
Step 7.2.2 Elbow Installation
Step 7.2.3 Reflector Joint Installation
26
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