Aiko CTH3-115 User's Manual

Aiko CTH3-115 User's Manual
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. DO NOT try to light any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your building.
5. Extinguish any open flame.
6. Leave the building.
7. Immediately call your local gas
supplier after leaving the building.
Follow the gas supplier’s
instructions.
8. If you cannot reach your gas
supplier, call the Fire Department.
WARNING
Gas-Fired, Low Intensity
Unitary Heater
Installation, Operation &
Service Manual
Fire Hazard
CTH3-80
CTH3-115
CTH3-150
CTH3-200
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.
Installer
WARNING
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or
property damage. Read the Installation, Operation
and Service Manual thoroughly before installing or
servicing this equipment.
Installation must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment or your gas supplier.
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Owner
Keep this manual in a safe place in order to provide
your serviceman with necessary information.
Roberts-Gordon LLC
1250 William Street
P.O. Box 44
Buffalo, New York 14240-0044
Telephone: +1.716.852.4400
Fax: +1.716.852.0854
Toll Free: 800.828.7450
© 2012 Roberts-Gordon LLC
www.rg-inc.com
www.radiantheaters.com
P/N 134100NA Rev K 02/12
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............................................ 12
6.1 Burner Tube Installation ............................................ 16
6.2 Tube Clamp Package Installation .............................. 16
6.3 Coupling and Tube Assembly.................................... 17
6.4 Turbulator Installation ................................................ 18
6.5 Reflector Installation .................................................. 19
6.6 Burner Installation...................................................... 21
SECTION 7: Optional Heater Accessories .......................... 22
7.1 U-Tube Configuration.................................................. 22
7.2 Elbow Package Configuration..................................... 25
7.3 Reflector Side Extension ............................................ 27
7.4 Lower Clearance Shield Installation ........................... 28
7.5 Two-Foot Decorative Grille Installation ....................... 28
7.6 Protective Grille Installation ........................................ 30
SECTION 8: Venting.............................................................. 31
8.1 Venting....................................................................... 31
8.2 Unvented Operation................................................... 31
8.3 Horizontal Venting...................................................... 32
8.4 Vertical Venting .......................................................... 32
8.5 Unvented Operation Tube Termination ...................... 32
8.6 Length Requirements ................................................ 32
8.7 Horizontal Ventilation 4" (10 cm) Pipe........................ 32
8.8 Vertical Ventilation 4" (10 cm) Pipe ............................ 33
8.9 Common Side Wall Venting ....................................... 33
8.10 Common Vertical Venting ........................................ 34
8.11 Outside Combustion Air Supply ............................... 35
SECTION 9: Gas Piping........................................................ 37
SECTION 10: Wiring.............................................................. 39
10.1 Standard Heater Configuration ................................ 39
10.2 Central and Satellite Heaters (Zoning Capability) .... 40
10.3 Communication Wiring within a Zone of Heaters ..... 42
10.3 Communication Wiring within a Zone of Heaters
(continued) .............................................................. 43
10.4 Heat Demand Control Wiring ................................... 44
10.5 Internal Wiring.......................................................... 52
10.6 Ladder Diagram ....................................................... 53
10.7 Line Voltage Power Wiring ....................................... 54
10.8 Electrical Connection to the Burner ......................... 54
10.9 Low Voltage Control Wiring Installation.................... 55
SECTION 11: Operation and Maintenance.......................... 56
11.1 Sequence of Operation ............................................ 56
11.2 To Shut Off Heater.................................................... 56
11.3 To Start Heater ......................................................... 56
11.4 Pre-Season Maintenance and Annual Inspection..... 56
SECTION 12: Troubleshooting............................................. 59
12.1 Control LED ............................................................. 60
12.2 General LED Codes ................................................ 60
12.3 Troubleshooting Flow Chart ..................................... 62
12.4 Manifold Gas Pressure Measurement...................... 64
12.5 Pneumatic Connections........................................... 65
SECTION 13: Replacement Parts ........................................ 66
SECTION 14: General Specifications .................................. 69
14.1 Material Specifications............................................. 69
14.2 Heater Specifications............................................... 69
14.3 Suspension Specifications....................................... 69
14.4 Controls Specifications ............................................ 69
SECTION 15: The ROBERTS GORDON® VANTAGE®
MODULATING Warranty................................ 71
There are references in this manual to various trademarks. All trademarks mentioned herein, whether registered or not, are the
property of their respective owners. Roberts-Gordon LLC is not sponsored by or affiliated with any of the trademark or registered trademark owners, and make no representations about them, their owners, their products or services. Roberts-Gordon
LLC is not sponsored by or affiliated with BACnet® or LonWorks®.
© 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.
Printed 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 ..................................... 13
Figure 15: Linear Heater Assembly Overview ........................ 14
Figure 16: Linear Heater Layout Overview.............................. 15
Figure 17: U-Tube Heater Assembly Overview ...................... 23
Figure 18: U-Tube Heater Layout Overview ........................... 24
Figure 19: Reflector Joint Detail .............................................. 26
Figure 20: Tube Termination................................................... 32
Figure 21: Gas Connection with Flexible Gas Hose ............... 38
Figure 22: Zone Sensor Wiring Diagram................................. 39
Figure 23: Central Heater Jumper Settings............................. 40
Figure 24: Satellite Heater Jumper Setting.............................. 41
Figure 25: Communication Wiring within a Zone of Heaters ... 42
Figure 25: Communication Wiring within a Zone of Heaters
(continued)............................................................. 43
Figure 26: Thermostat Control Wiring Diagram....................... 44
Figure 27: Analog Control Signal Wiring Diagram................... 47
Figure 28: Potentiometer Control Wiring Diagram................... 48
Figure 29: Modulating Thermostat Wiring Diagram
(LonWorks [4-20 mA] optional) ............................. 49
Figure 30: Modulating Thermostat Wiring Diagram
(LonWorks [2-10Vdc with 500 Ohm resistor]
optional)................................................................. 50
Figure 31: Modulating Thermostat Wiring Diagram
with BACnet (optional) ......................................... 51
®
®
®
LIST OF TABLES
Table 1: Contents of Burner Carton ........................................ 11
Table 2: Contents of Core and Extension Packages .............. 11
Table 3: CTH3-Series Component Package Guide ................ 11
Table 4: Cable Requirements ................................................. 46
SECTION 1: HEATER SAFETY
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,
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.
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.
1.1 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
the product user when they are no longer legible.
Please contact Roberts-Gordon LLC 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 requirements, 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.
®
Product safety signs or labels should be replaced by
1 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
FIGURE 1: Top and Bottom Panel Label Placement
Logo Label
Rating Plate Label
Bottom
Panel
Proposition 65 Label
Description
Logo Label
Rating Plate Label
Gas Connection Label
Proposition 65 Label
2 of 71
Part Number
91013212
91010401
91018122
91070015
Top Panel
Gas Connection Label
SECTION 1: HEATER SAFETY
FIGURE 2: Side and Back Panel Label Placement
Control Side Panel
Clearances to Combustibles Label
Control Side Panel (Inside)
N.O.
Wiring Label
COM
Inside Bottom Panel
Carbon Monoxide Hazard Label
Vent Length Label
Low Voltage
Connection
Label
Back Panel
Description
Clearances to Combustibles Label
Wiring Label
Carbon Monoxide Hazard Label
Low Voltage Connection Label
Vent Length Label
Lighting Instruction Plate Label
Part Number
91013415
91013303
91039501
91039700
91039500
91029602
Lighting Instruction Plate Label
3 of 71
CTH3-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 LLC
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.
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
• 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.
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 LLC cannot be responsible for
ensuring that all appropriate safety measures are
• To ensure there is adequate air circulation around
undertaken prior to installation; this is entirely the
the heater and to supply air for combustion, venti- responsibility of the installer. It is essential that the
lation and distribution in accordance with local
contractor, the sub-contractor, or the owner identifies
codes.
the presence of combustible materials, corrosive
chemicals or halogenated hydrocarbons* anywhere
• To safely and adequately install heater using
in the premises.
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 LLC
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
®
®
4 of 71
* 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.
SECTION 3: CLEARANCES TO COMBUSTIBLES
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 clearances 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
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 clearance to combustible represents a
surface temperature of 90° F (50°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
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.
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.
• 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.
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 3: STANDARD REFLECTOR
(inches)
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
6
38
66
38
16
97
168
97
CTH3-115
6
46
77
46
16
117
196
117
CTH3-150
6
50
80
50
16
127
204
127
CTH3-200
8
52
82
52
21
133
209
133
5 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream
from where the burner and burner tube connect.
FIGURE 4: ONE SIDE REFLECTOR
(inches)
A
B
C
D
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
6
9
70
54
16
23
178
138
CTH3-115
6
9
83
65
16
23
211
166
CTH3-150
6
9
86
69
16
23
219
176
CTH3-200
8
9
88
73
21
23
224
186
FIGURE 5: TWO SIDE REFLECTORS
(inches)
A
C
B
D
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
6
25
72
25
16
64
183
64
CTH3-115
6
32
84
32
16
82
214
82
CTH3-150
6
35
88
35
16
89
224
89
CTH3-200
8
40
91
40
21
102
232
102
FIGURE 6: 45° TILT REFLECTOR
(inches)
6 of 71
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
8
8
66
60
21
21
168
153
CTH3-115
10
8
78
69
26
21
199
176
CTH3-150
12
8
84
74
31
21
214
188
CTH3-200
12
8
85
79
31
21
216
201
SECTION 3: CLEARANCES TO COMBUSTIBLES
NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream
from where the burner and burner tube connect.
FIGURE 7: U-TUBE, STANDARD REFLECTOR
(inches)
A
B
D
C
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
6
38
69
37
16
97
176
94
CTH3-115
6
46
79
43
16
117
201
110
CTH3-150
6
50
84
47
16
127
214
120
CTH3-200
8
54
87
51
21
138
221
130
FIGURE 8: U-TUBE, 45°
(inches)
A
B
D
C
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
8
8
66
46
21
21
168
117
CTH3-115
8
8
78
61
21
21
199
155
CTH3-150
8
8
84
66
21
21
214
168
CTH3-200
8
8
85
70
21
21
216
178
FIGURE 9: U-TUBE, OPPOSITE 45° REFLECTOR
(inches)
A
B
C
D
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
8
60
66
22
21
153
168
56
CTH3-115
10
70
78
22
26
178
199
56
CTH3-150
12
74
84
22
31
188
214
56
CTH3-200
12
76
85
22
31
194
216
56
7 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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)
A
C
B
D
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
6
38
66
38
16
97
168
97
CTH3-115
6
46
77
46
16
117
196
117
CTH3-150
6
50
80
50
16
127
204
127
CTH3-200
8
52
82
52
21
133
209
133
FIGURE 11: LOWER CLEARANCE SHIELD*
(inches)
A
C
B
D
(centimeters)
Model
A
B
C
D
A
B
C
D
CTH3-80
6
40
38
40
16
102
97
102
CTH3-115
6
54
48
54
16
138
122
138
CTH3-150
6
55
50
55
16
140
127
140
CTH3-200
- UNAPPROVED -
- UNAPPROVED -
(inches)
(centimeters)
*When installed in the first 10' (3 m).
FIGURE 12: VENTING
A
Unvented
Radiant Tubes
Vented
8 of 71
E
Vent
Pipes
F
Model
A
E
F
A
E
F
CTH3-80
20
24
18
51
61
46
CTH3-115
20
24
18
51
61
46
CTH3-150
20
30
18
51
77
46
CTH3-200
20
30
18
51
77
46
SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES
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 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 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 5: MAJOR COMPONENTS
FIGURE 13: Major Component Descriptions
Burner with Tube Gasket
Must be installed with the
flame observation
window facing down.
Burner Tube
Supplied in 10'
(3 m) lengths. Burner
tube is always the first tube
after the burner.
Tube and Reflector Hanger
with Clamp Package
Position this hanger no more
than 4" (10 cm) away from the
burner.
Tube and Reflector Hanger
Suspend system from these
hangers.
Reflector
(Aluminum or
Stainless
Steel)
Alternate overlap as
shown on overview and
on Page 15, Figure 16.
Minimum overlap is 6" (16 cm).
Tube
Heat treated
aluminized tube supplied
in 10' (3 m) lengths.
Coupling Assembly
with Lock
Reflector End Cap
Punch out center
section to
accommodate tube.
Vent Adapter
Reflector Support Strap &
Wire Form
Turbulator
Flex Gas Line with
Shut Off Cock
10 of 71
Turbulator must
be installed in the last
standard section of tube.
Turbulator is not required on the
CTH3-200. For installation see
Page 18, Section 6.4.
SECTION 5: MAJOR COMPONENTS
5.1 Standard Parts List
Table 1: Contents of Burner Carton
Part No.
Description
CTH3-80 CTH3-115 CTH3-150
CTH3-200
034XXXXX
Burner Assembly (Rate and Fuel Varies)
1
1
1
1
02568200
Gasket (Burner to Burner Tube)
1
1
1
1
134100NA
Installation, Operation and Service Manual
1
1
1
1
94273914
Hex Head Bolts 5/16-18 Rolok
4
4
4
4
96411600
Split Lock Washer
4
4
4
4
91201708
Pipe Nipple (Black) 1/2" NPT x 4"
1
1
1
1
*91412200
Flexible Stainless Steel Gas Hose - 1/2" NPT (US Models Only)
1
1
-
-
*91412204
Flexible Stainless Steel Gas Hose - 3/4" NPT (US Models Only)
-
-
1
1
03051503
Turbulator Adapter
1
1
1
-
03051504
Turbulator, Aluminized Steel
3
3
1
-
91317310
Wire Terminal Receptacle.187 x.032
8
8
8
8
91309605
Cable Grommet with Tie
1
1
1
1
*Canadian Models: Rubber (Type 1) Gas Hoses available as an accessory. See Page 37, Section 9.
Table 2: Contents of Core and Extension Packages
Core Packages (Aluminized)
Part No.
Description
Extension Packages (Aluminized)
10' (3m) 20' (6m) 30' (9m) 40' (12m) 10' (3m) 20' (6m) 30' (9m) 40' (12m)
91409408
Tube, HT Aluminized, 10' (3m)
-
1
2
3
1
2
3
4
03051101
®
Burner Tube, ALUMI-THERM Steel, 10' (3m)
-
-
1
1
-
-
-
-
03051601
Burner Tube, HT ALUMI-THERM Steel, 10' (3m)
1
1
-
-
-
-
-
-
®
2
3
4
2
3
4
6
02750800
End Cap
2
2
2
2
-
-
-
4
Tube and Reflector Hanger
2
3
4
5
1
2
3
S-Hook
2
3
4
5
1
2
3
4
03050010
Reflector Support Package (Strap, Wire Form, Screws)
1
2
3
5
2
3
4
6
91107720
U-Clip Package
1
1
1
1
1
1
1
1
90502700
Vent Adapter
1
1
1
1
-
-
-
-
01318901
Tube Clamp Package
1
1
1
1
-
-
-
-
Part Number
EXP40ALUM
03090100
91907302
EXP30ALUM
1
6
EXP20ALUM
3
4
EXP10ALUM
2
3
CP40ALUM
1
2
CP30ALUM
-
Standard Reflector, 8' (2.6m)
CP20ALUM
Coupling Assembly
CP10ALUM
01312700
02750303
Table 3: CTH3-Series Component Package Guide
Model
Tubing Length
Minimum
Core Packages
Aluminized
CTH3-80
20' (6m)
CP20ALUM
CTH3-115
30' (9m)
CP30ALUM
CTH3-150
40' (12m)
CP40ALUM
CTH3-200
50' (15m)
CP30ALUM + EXP20ALUM
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 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 6: HEATER INSTALLATION
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.
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 it is
readily accessible for servicing.
The heater must be installed in accordance with
clearances to combustibles as indicated on the
heater and in this instruction manual.
The gas inlet pressure must be maintained as
indicated on the rating plate.
Typical installation configurations are shown on Page
13, Figure 14.
12 of 71
Expansion and contraction of the tube dictates that
the minimum suspension lengths in the table on
Page 13, Figure 14 be maintained.
SECTION 6: HEATER INSTALLATION
FIGURE 14: Critical Hanger Placement
Typical Suspension Details
Beam Clamp
Anchor
Screw Hook
3/8"
24" min.*
(61 cm)
Concrete Beam
Wood Beam
Locknut
Chain Size
3/16"
Minimum
Rod 3/8"
Washers
“X”*
S-hooks
Turnbuckle
Not Included
* Allows for thermal expansion of system
S-hooks
Hanger
Side View
Hanger
Reflector
Must Be Within 4" (10 cm)
Description
S-Hook
Tube/Reflector Hanger
Part Number
91907302
03090100
Front View
45° Angle
Run Length
10' - 50'
51' - 60'
61' - 70'
Typical Expansion
±1" (3 cm)
±2" (5 cm)
±3" (8 cm)
Minimum “X” Length
12"
18"
24"
13 of 71
14 of 71
Reflector Support
Tube and Reflector Hanger
Coupling
Burner Tube
Tube Clamp
Package
Burner
Reflector End Cap
Reflector
Vent Adapter
Tube
Turbulator
(With Select Models)
U-Clips
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
FIGURE 15: Linear Heater Assembly Overview
SECTION 6: HEATER INSTALLATION
FIGURE 16: Linear Heater Layout Overview
LEGEND
g
Burner
Reflector
b
c
d
e
f
20' (6 m) Tube Length
Tube
Tube/Reflector
Hanger
g
b
c
d
e
e
Coupling
Assembly
Vent Adapter
f
a = 14" (36 cm)
reflector width (not shown)
30' (9 m) Tube Length
b = 2" (5 cm)
end cap to burner
g
c = 2" (5 cm)
end cap to hanger
b
c
d
e
e
e
f
d = 7'6" (229 cm)
distance first hanger
40' (12 m) Tube Length
e = 10' (305 cm)
distance between hangers
g
f = 9.5" (24 cm)
burner height
b
c
d
e
e
e
e
f
g = 17.5" (44 cm)
burner length
50' (15 m) Tube Length
g
b
c
d
e
e
e
e
e
e
e
e
e
f
60' (18 m) Tube Length
g
b
c
d
e
e
b
f
70' (21 m) Tube Length
g
b
c
d
e
e
e
e
e
e
e
b
f
80' (24 m) Tube Length
15 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Step 6.1 Burner Tube Installation
NOTE:
Tubing requires a downward
slope of 1/2" (1.3 cm)
per 20' (6 m) away
from burner.
Offset mounting
hole must be
to the top.
S-hook
Hanger
Burner Tube
Weld seam
must be to the
bottom of the tube.
7' 6" ± 1'
(229 cm ± 25 cm)
Description
Burner Tube
S-Hook
Tube/Reflector Hanger
Part Number
03051XXX
91907302
03090100
Step 6.2 Tube Clamp Package Installation
Description
Tube Clamp Package
Tube Clamp
Bolt
Flat Washer
Nut
Part Number
01318901
01396801
97113940
95211600
92113900
Tube Clamp
Flat
Washer
Nut
(Torque 120 in/lb
13.56 Nm)
16 of 71
Bolt
SECTION 6: HEATER INSTALLATION
Step 6.3 Coupling and Tube Assembly
Close coupling
with tab.
A
Slide bar/Coupling
B Start
Lock.
Tab
Slide Bar/Coupling Lock
Wide End
Coupling
Open
3" (8 cm) to
4" (10 cm)
Closed
C Insert tubes into coupling.
D Tighten coupling to join tubes.
Slide Bar/Coupling Lock
Coupling
Orient coupling so that
the impact block is in the
2:00 or 10:00 o’clock
positions.
Tube
Tube
Description
Coupling
Slide bar/Coupling Lock
Tube
Tube
Part Number
01329600
01329700
91409XXX
Step 6.3.1 Coupling and Tube Assembly (Continued)
Tighten slide bar as shown below.
Drive slide bar until tight.
End of slide bar should be
within tolerance listed below.
± 2" (5 cm)
Correct slide bar
dimensions
Incorrect slide bar
position
• Repeat Step 6.3 A - D until all tubes are assembled. See Page 18, Section 6.3.2.
17 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Step 6.3.2 Coupling and Tube Assembly (Continued)
Model
CTH3-80
CTH3-115
CTH3-150
CTH3-200
Tube Length
Minimum
20' (6 m)
30' (9 m)
40' (12 m)
50' (15 m)
7' 6" ± 1'
(2.3 m ± .25 m)
10' ± 1'
(3 m ± .25 m)
Total Overall
Tube Length
Step 6.4 Turbulator Installation
Turbulator must be installed in
the last standard section of
tube. Turbulator is not required
on the CTH3-200.
Twis t
Turbulator
Section
Turbulator
Adapter
Turbulator Installation
CTH3-80
2nd 10' Section
CTH3-115
3rd 10' Section
CTH3-150
4th 10' Section
CTH3-200
N/A
Tab
Pull String
Description
Turbulator Adapter
Turbulator Section
Tube
18 of 71
Part Number
03051503
03051504
91409XXX
Fold tab around outside
of tube nearest to the vent to
hold turbulator in place.
SECTION 6: HEATER INSTALLATION
6.5 Reflector Installation
WARNING
Fire Hazard
Support reflector with reflector hanger
and support strap.
Reflector must not touch tube.
Failure to follow these instructions can result
in death, injury or property damage.
NOTE: All tube surfaces must be covered
by a reflector, except for a U-Tube.
Hanger
Burner Tube
Reflector
Description
Tube/Reflector Hanger
Burner Tube
Reflector
Part Number
03090100
03051XXX
02750303
19 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Step 6.5.1 Reflector, U-Clip and Reflector Support Installation
The pictorial drawings of the heater construction in
reflector supports and U-clips depends on the
Section 6 are schematic only and provide a general individual installation. Use either pop rivets or sheet
guideline of where hangers, reflector supports and
metal screws instead of u-clips when installing end
U-clips are to be installed.
caps and joint pieces in areas where impact and high
wind may be a factor. The following rules must be
To ensure proper expansion and contraction
movement of the reflectors, a combination of U-clips observed.
and reflector supports are used. The positioning of
1. The first reflector after the burner must be affixed in
the middle of the reflector with a reflector support and
tight screws.
Tight
Sheet Metal
Screw
Wire Form
Reflector
End Cap
First Reflector
Reflector Support
Strap
U-clips
Overlap must be a
minimum of 6" (16 cm).
2B
Slip Overlap
6"
(16 cm)
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.
Loose screws
loosened 1/16"
(.16 cm) to allow
slippage.
2A
Slip Overlap
3A
Non-Slip 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.
Description
Reflector Support Package
Wire Form
Reflector Support Strap
Screw #8 x 3/4
U-Clip Package
Reflector End Cap
20 of 71
Part Number
03050010
91908004
03050000
94320812
91107720
027508XX
Reflector
Reflector
Support
Reflector
Tight
Screws
3B
Non-Slip Overlap
U-clip
(2 Clips per
Non-slip Overlap
Inside a Hanger)
SECTION 6: HEATER INSTALLATION
Step 6.6 Burner Installation
Burner
Gasket
S-hook
Burner Tube
Burner must be installed
with the flame observation
window facing down.
Description
Bolt
Burner
Lock Washer
Gasket
Part Number
94273914
034XXXXX
96411600
02568200
Lock
Washer
Bolt
(Torque 120 in/lb
13.56 Nm)
21 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 7: OPTIONAL HEATER ACCESSORIES
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
7.1 U-Tube Configuration
Heaters are approved for optional U-Tube
configurations.
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 7, Figure 7 through
Figure 9. When using a U-Tube configuration, the
following additional rules must be adhered to:
• A minimum of 10' (3 m) on CTH3-80 and a minimum of 15' (4.5 m) on CTH3-115/150/200 is
required between the burner and the U-Tube.
• The correct turbulator (See Page 18, 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 18.
22 of 71
SECTION 7: OPTIONAL HEATER ACCESSORIES
FIGURE 17: U-Tube Heater Assembly Overview
23 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
FIGURE 18: U-Tube Heater Layout Overview
LEGEND
g
b
c
e
Burner
Reflector
h
20' (6 m) Tube Length*
Tube 10' (3 m)
g
Tube 5' (1.5 m)**
Tube/Reflector
Hanger
b
c
d
f
h
Coupling
Assembly
30' (9 m) Tube Length**
U-tube
g
b
c
d
e
a = 14" (36 cm)
reflector width (not shown)
b = 2" (5 cm)
end cap to burner
h
40' (12 m) Tube Length
c = 2" (5 cm)
end cap to hanger
g
d = 7'6" (229 cm)
distance first hanger
e = 10' (305 cm)
distance between hangers
b
c
d
e
f
h
50' (15 m) Tube Length* **
f = 5' (153 cm)
distance between last full tube
hanger and half tube hanger
g
b
c
d
e
e
g = 17.5" (44 cm)
burner length
h = 9.5" (24 cm)
burner height
h
60' (18 m) Tube Length
*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.
g
b
c
d
e
e
f
h
70' (21 m) Tube Length**
g
b
c
d
h
80' (24 m) Tube Length
24 of 71
e
e
e
SECTION 7: OPTIONAL HEATER ACCESSORIES
7.2 Elbow Package Configuration
Step 7.2.1 Elbow Installation
Tube
Coupling
Description
Elbow Package
90° Elbow
Coupling
Reflector End Cap
Reflector Joint Piece
U-Clip Package
Part Number
02718702
01335801
01312700
02750800
02750900
91107720
90° Elbow
Minimum Distance Required
Between Burner and Elbow
Minimum
Model
Distance
CTH3-80
10' (3m)
CTH3-115
CTH3-150
15' (4.5m)
CTH3-200
Step 7.2.2 Elbow Installation
Tube
Coupling
Step 7.2.3 Reflector Joint Installation
25 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Step 7.2.4 Reflector Joint Installation
Step 7.2.5 Reflector Joint Detail
FIGURE 19: Reflector Joint Detail
26 of 71
SECTION 7: OPTIONAL HEATER ACCESSORIES
7.3 Reflector Side Extension
Step 7.3.1 Bracket Installation
Tube
Reflector
Tube and Reflector Hanger
Reflector Support
Reflector Side
Extension Bracket
(2 per Reflector)
Use additional supports
in high air movement
applications.
Description
Reflector Side Extension Package
Reflector Side Extension
Retainer Clips
Sheet Metal Screws
Part Number
02712700
01368000
02751200
94118106
Order Separately
Reflector Side Extension Bracket
01329910
Step 7.3.2 Side Reflector Installation
#8 x 3/8 (3.9 x 9.5 mm) Sheet Metal Screw
Cut relief notches for
supports and hangers.
Retainer Clip
(2 per Side)
Reflector Side Extension
27 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
7.4 Lower Clearance Shield Installation
Step 7.4.1 Shield Support Strap Assembly
Reflector
17"
(43 cm)
12"
(30 cm)
Align Pilot Holes
Lower Clearance Shield
Locknuts
Washers
Screws
Description
Lower Clearance Shield Package
Shield Support Strap
Lower Clearance Shield 8'
Locknut #8
Flat Washer #8
Screw #8 x 3/8"
Part Number
01397501
01397500
02793000
92311400
95310800
93511406
7.5 Two-Foot Decorative Grille Installation
Step 7.5.1 Grille Installation
Description
Aluminum Grille 2’ x 4’
28 of 71
Part Number
91407000
SECTION 7: OPTIONAL HEATER ACCESSORIES
Step 7.5.2 Frame Shield Installation
Description
Deco Grille Shield
Part Number
01365900
Step 7.5.3 Reflector Side Extension Installation for Decorative Grilles
Distance "A"
Minimum
Maximum
2" (4 cm)
6" (15 cm)
6" (15 cm)
10" (26 cm)
10" (26 cm)
14" (37 cm)
Extension
Part No.
Width
01370408
8" (20 cm)
01370412
12" (30 cm)
01370416
16" (40 cm)
Description
Reflector Side Extension
Part Number
01370412
29 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
7.6 Protective Grille Installation
Step 7.6.1 Silicone Cap Installation
Silicone Cap
Description
Grille Section
Grille End Cap
Silicone Cap
Grille
Finger
Part Number
08050001
08050002
91915951-6P
Step 7.6.2 Grille End Cap Installation
B
A
Grille
Grille End Cap
C
D
Bend up 90°.
Pull outward.
Step 7.6.3 Grille Installation
Reflector
40"
(101 cm)
Grille
Final Grille
Section
Grille
End Cap
30 of 71
SECTION 8: VENTING
SECTION 8: VENTING
WARNING
Carbon Monoxide Hazard
Heaters installed unvented must be interlocked
with sufficient building exhaust.
Heaters must be installed according to the
installation manual.
Failure to follow these instructions can result
in death or injury.
WARNING
Vent pipe must be sloped downward away from the
burner 1/2'' (1 cm) for every 20' (6 m).
The heater may be individually vented or common
vented. When venting horizontally, a maximum of two
heaters can be commonly vented. See Page 33,
Section 8.9. When venting vertically, a maximum of
four heaters can be commonly vented. See Page 34,
Section 8.10.
The heater may also be installed unvented in certain
circumstances according to building ventilation codes.
Refer to the above codes and Page 31, Section 8.2 for
further information. Unvented operation also requires
compliance with the clearances to combustibles given
on Page 8, Figure 12.
The bottom of the vent or air intake terminal shall not
be located less than 1' (.3 m) above grade level.
The vent shall not terminate less than 7' (2.1 m) above
grade where located adjacent to public walkways.
Vent terminal must be installed at a height sufficient to
prevent blockage by snow and building materials
protected from degradation by flue gasses.
Secure all joints with #8 x 3/8 sheet metal screws.
Seal all joints with high temperature silicone sealant.
Vent terminal must be beyond any combustible
overhang.
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
8.1 Venting
This heater must be vented in accordance with the
rules contained in this manual and with the following
national codes and any state, provincial or local
codes which may apply:
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.
Exhaust end of heater will accept a 4" (10 cm) vent
pipe using the vent adapter (P/N 90502700). To
prevent leakage of condensation, install the vent
adapter with the seam on top and seal the joint using
a high temperature silicone sealant.
Any portion of vent pipe passing through a
combustible wall must have an approved thimble
to conform with the above listed codes.
8.1.1 United States Requirements
Vent must terminate at least 3' (.9 m) above any forced
air inlet located within 10' (3.1 m).
Vent must terminate at least 4' (1.2 m) below,
4' (1.2 m) horizontally from, or 1' (.3 m) above any
door, operable window, or gravity air inlet into any
building.
8.1.2 Canadian Requirements
The vent shall not terminate within 6' (1.8 m) of a
mechanical air supply inlet to any building.
The vent shall not terminate within 3' (.9 m) of a
window or door that can be opened in any building,
any non-mechanical air supply inlet to any building, or
of the combustion air inlet of any other appliance.
8.2 Unvented Operation
Sufficient ventilation must be provided in the amount
of 4 cfm per 1000 Btu/h firing rate (United States); 3
cfm per 1000 Btu/h firing rate (Canada).
Use of optional outside combustion air is not
recommended with unvented heaters.
If exhaust fans are used to supply ventilation air, an
interlock switch must be used to prevent the heater
from coming on when the fans are off. This may be
done using a pressure switch.
31 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
8.3 Horizontal Venting
In noncombustible walls only, vent terminal
(P/N 02537801-1P) may be used.
FIGURE 20: Tube Termination
For 4" (10 cm) vents in either combustible or
noncombustible walls, use Tjernlund VH1-4 (P/N
90502100) or equivalent, insulated vent terminal.
Follow the manufacturer's instructions for proper
installation.
For 6" (15 cm) common vents in either combustible or
noncombustible walls, use Tjernlund VH1-6 (P/N
90502101) or equivalent, insulated vent terminal.
Follow the manufacturer's instructions for proper
installation.
8.4 Vertical Venting
For 4" (10 cm), an approved vent cap
(P/N 90502300) must be used.
For 6" (15 cm) common vent, an approved vent cap
(P/N 90502302) must be used.
For common vertical venting of more than two heaters,
See Page 34, Section 8.10.
A vent shall not extend less than 2' (.6m) above the
highest point where it passes through a flat roof of a
building.
8.5 Unvented Operation Tube Termination
Turndown type vent terminal with a screen must be
installed at the exhaust end of the tube. Vent terminal
design shall not incorporate backdraft flap.
8.6 Length Requirements
The maximum vent length allowed is 45' (13.7 m). The
maximum outside air supply duct length allowed is 45'
(13.7 m).
The total vent length, plus outside air duct length and
any extensions to minimum heat exchanger lengths,
cannot exceed 65' (19.8 m).
Vent length should be limited to less than 20' (6 m).
If using extended heater lengths or vent lengths
greater than 20' (6 m), condensation will form in the
vent pipe. Insulation and additional sealing measures
(high temperature silicone at all seams) are required.
Optional heat exchanger beyond minimum lengths are
considered as vent length for length determination.
Subtract 15' (4.6 m) of maximum allowed vent or duct
length per vent elbow if more than two are used.
8.7 Horizontal Ventilation 4" (10 cm) Pipe
SIDE VIEW
Non-Combustible Wall Only
Combustible or
Non-Combustible Wall
Vent Adapter
Vent Adapter
18" (46 cm)
Min.
4" (10 cm)
Single Wall Pipe
Vent Terminal
Description
Vent Terminal (Comb. Wall)
Vent Terminal
32 of 71
Part Number
90502100
02537801-XX
4" (10 cm) Single Wall Pipe
Vent Terminal
SECTION 8: VENTING
8.8 Vertical Ventilation 4" (10 cm) Pipe
Description
Vent Cap 4" (10 cm)
Part Number
90502300
8.9 Common Side Wall Venting
TOP VIEW
Vent Terminal
Tjernlund VH1-6 or Equivalent
Outside Wall
Vent Adapter
6" (15 cm) Single Wall Pipe
Sweeping 'T'
Connection
Vent Adapter
4" (10 cm) Single Wall Pipe
Vent Terminal
Tjernlund VH1-6 or Equivalent
Outside Wall
6" (15 cm) Single Wall Pipe
Vent Adapter
Sweeping 'Y'
Connection
4" (10 cm) Single Wall Pipe
4" (10 cm) Single Wall Pipe
Description
Vent Terminal 6" (15 cm)
Part Number
90502101
Vent Adapter
Requirements:
• Maximum of two heaters can be commonly
vented through a side wall.
• Heaters must be of the same BTU output.
• Heaters must be controlled by a common
thermostat.
33 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
8.10 Common Vertical Venting
Requirements:
• Maximum of four heaters can be commonly vented
through the roof.
• Heaters must be of the same BTU output.
• Heaters must be controlled by a common
thermostat.
• Connections to a common stack must be
positioned to avoid direct opposition between
streams of combustion gases.
34 of 71
SECTION 8: VENTING
8.11 Outside Combustion Air Supply
IMPORTANT: If the building has a slight negative
pressure or corrosive contaminants such as
halogenated hydrocarbons are present in the air, an
outside combustion air supply to the heater is
required. Seal all combustion air pipe joints.
The air supply duct may have to be insulated to
prevent condensation on the outer surface. The
outside air terminal must not be more than 1' (31 cm)
above the vent terminal.
Use of optional outside combustion air is not
recommended with unvented heaters.
8.11.1 Length Requirements
Follow the constraints listed on Page 32, Section 8.6.
8.11.2 Vertical Outside Air Supply for Single Heater Installation
SIDE VIEW
Description
Vent Cap 4" (10 cm) for 80,000 Btu/h
and 115,000 Btu/h models
Vent Cap 5" (13 cm) for 150,000 Btu/h
and 200,000 Btu/h models
Part Number
90502300
90502301
8.11.3 Horizontal Outside Air Supply for Single Heater Installation
Wall
SIDE VIEW
Vent Cap
For 80 and 115 models,
4" (10 cm) Single Wall Pipe.
For 150 and 200 models,
5" (13 cm) Single Wall Pipe.
Flex Hose
(Recommended)
Burner
4"
(10 cm)
Min.
Description
Vent Cap 4" (10 cm) for 80,000 Btu/h
and 115,000 Btu/h models
Vent Cap 5" (13 cm) for 150,000 Btu/h
and 200,000 Btu/h models
Band Clamp
(Recommended)
Part Number
90502300
90502301
35 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
8.11.4 Vertical Outside Air Supply for Double Heater Installation
SIDE VIEW
Vent Cap
Roof
For 80 and 115 models, 6" (15 cm) Single Wall Pipe.
For 150 or 200 models, 7" (18 cm) Single Wall Pipe.
Flex Hose
(Recommended)
Burner
Band Clamp
(Recommended)
Description
Vent Cap 6" (15 cm)
Sweeping 'T'
Connection
Burner
For 80 and 115 models, 4"
(10 cm) Single Wall Pipe.
For 150 or 200 models, 5"
(13 cm) Single Wall Pipe.
Flex Hose
(Recommended)
Part Number
90502302
Requirements:
• Heaters must be controlled by a common thermostat.
8.11.5 Horizontal Outside Air Supply for Double Heater Installation
TOP VIEW
For 80 or 115 models, 6" (15 cm)
Single Wall Pipe. For 150 and 200
models, 7" (18 cm) Single Wall Pipe.
4"
(10 cm)
Min.
Outside Wall
Vent Cap
Flex Hose
(Recommended)
Burner
Sweeping 'Y'
Connection
For 80 or 115 models, 4" (10 cm)
Single Wall Pipe. For 150 and 200
models, 5" (13 cm) Single Wall Pipe.
Burner
Band Clamp
(Recommended)
Description
Vent Cap 6" (15 cm)
Part Number
90502302
Requirements:
• Heaters must be controlled by a common thermostat.
36 of 71
SECTION 9: GAS PIPING
SECTION 9: GAS PIPING
WARNING
Fire Hazard
Tighten gas hose fittings to connect gas
supply according to Figure 21.
Gas hose can crack when twisted.
Gas hose moves during normal operation.
Use only 36" (91 cm) long connector of 1/2" or
3/4" nominal ID.
Connector supplied with heater for U.S.
models (not with Canadian models).
Failure to follow these instructions can result
in death, injury or property damage.
WARNING
There is an expansion of the tube with each firing
cycle. This will cause the burner to move with respect
to the gas line. This can cause a gas leak resulting in
an unsafe condition if the gas connection is not made
in strict accordance with Figure 21.
Meter and service must be large enough to handle all
the burners being installed plus any other connected
load. The gas line which feeds the system must be
large enough to supply the required gas with a
maximum pressure drop of 1/2" wc When gas piping
is not included in the layout drawing, the local gas
supplier will usually help in planning the gas piping.
Gas lines must meet applicable codes:
United States: The Flexible Stainless Steel Gas
Hose (US models) supplied with the heater is
certified per the Standard for Connectors for Gas
Appliances, ANSI Z21.24/CSA 6.10 - latest revision.
Canada: The Rubber Type 1 Gas Hose (Canadian
models) optional with the heater is certified as being
in compliance with the Standard for Elastomeric
Composite Hose and Hose Couplings for Conducting
Propane and Natural Gas, CAN/CGA 8.1 - Latest
revision.
• Check the pipe and tubing ends for leaks
before placing heating equipment into service. When checking for gas leaks, use a soap
and water solution; never use an open flame.
Explosion Hazard
Leak test all components of gas piping
before operation.
Gas can leak if piping is not installed
properly.
Do not high pressure test gas piping with
heater connected.
Failure to follow these instructions can result
in death, injury or property damage.
Install the gas hose as shown in Figure 21. The gas
hose accommodates expansion of the heating
system and allows for easy installation and service of
the burner. Before connecting the burners to the
supply system, verify that all high pressure testing of
the gas piping has been completed.
37 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
FIGURE 21: Gas Connection with Flexible Gas Hose
CORRECT POSITIONS
CAUTION
Product Damage Hazard
Shut-Off Valve (included with gas hose) must
be parallel to burner gas inlet. The 3" (8 cm)
displacement shown is for the cold condition.
This displacement may reduce when the
system is fired.
Hold gas nipple securely with pipe wrench
when attaching gas hose.
Failure to follow these instructions can result
in product damage.
Vertical
(as shown left)
12"
(30 cm)
3" (8 cm)
max. displacement
45°
Side View
Alternate
positions
okay
Horizontal
Flexible Gas Hose
36" (91 cm) length
Heater Movement
End View
INCORRECT POSITIONS (WRONG INSTALLATION)
Heater Movement
Heater Movement
Heater Movement
Description
1/2" Flexible Stainless Steel Gas Hose (US Models)
3/4" Flexible Stainless Steel Gas Hose (US Models)
1/2" Rubber Type 1 Gas Hose (Canadian Models)
3/4" Rubber Type 1 Gas Hose (Canadian Models)
38 of 71
Heater Movement
Part Number
91412200
91412204
91412206
91412207
SECTION 10: WIRING
SECTION 10: WIRING
DANGER
Electrical Shock Hazard
Disconnect electric before service.
Heater must be properly grounded.
Failure to follow these instructions can result
in death or electrical shock.
Heater must be grounded in accordance with
applicable codes: United States: refer to National
Electrical Code NFPA 70 - latest revision
Canada: refer to Canadian Electrical Code, CSA
C22.1 Part I - latest revision.
If any of the original internal wiring must be replaced,
it must be replaced with wiring materials having a
temperature rating of at least 105°C and 600 Volts.
10.1 Standard Heater Configuration
From the factory, the heater is configured for zone
sensor control. Connect zone sensor to the heater
control as shown on Page 39, Figure 22.
If additional heaters are in the same heating zone,
control wiring must be installed between the heaters’
controls as shown on Page 39, Figure 22.
For additional details or for use with heat demand
control devices other than the zone sensor, see Page
40, Section 10.2 through Page 48, Section 10.4.9.
®
FIGURE 22: Zone Sensor Wiring Diagram
ZONE SENSOR
CENTRAL HEATER CONTROL
ON
OFF
SET SEN +FAN-
-LCD+
THERMOSTAT
T24
R
T25
* Separate on/off switch is optional for
"satellite" heaters (install at user level). On/
Off switch is used to disable heater operation
or reset a heater that is in "lockout" mode. If
on/off switch is not desired, leave jumper wire
between R and W terminals in place.
W
T26
T14
T16
R
T25
W
T26
T27
T14
T15
T30
T16
AB
T17
T18
T19
MODULATION CONTROL WIRING
TO SATELLITE HEATERS
EXT. POT
J10
HIGH WIPER GND
FIRING
RATE
+ OUT -
T31
SLIDE
BAR GND
FIRING
RATE
+ IN -
T29
THERMISTOR
GND
T13
T28
ANALOG
INPUT
+
-
T19
THERMOSTAT
T24
EXT. POT
T18
HIGH WIPER GND
T17
SATELLITE HEATER CONTROL
SWITCH
SLIDE
BAR GND
T15
*OPTIONAL
THERMISTOR
GND
T13
ANALOG
INPUT
+
-
T27
T28
FIRING
RATE
+ IN -
T29
T30
FIRING
RATE
+ OUT -
T31
AB
J10
MODULATION CONTROL WIRING
Description
Zone Sensor, 40° - 75°
Part Number
10081530
TO ADDITIONAL SATELLITE
HEATERS CONTROL TERMINALS
T28 and T29.
39 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10.2 Central and Satellite Heaters (Zoning Capability)
The heater can be configured so that several heaters 10.2.1 Central Heater Configuration
within the same heating zone will modulate
Central heater configuration is set by positioning of
simultaneously with connection to a single heat
jumpers on pin blocks (J10 and J9) located on the
demand control device. The heat demand control
control inside the heater compartment, See Page 40,
device (See Page 44, Section 10.4) will be wired
Figure 23. Jumper position on J10 shown in Figure
directly to a single heater configured as the central
23, will configure heater as a central heater and at
heater. The remaining heaters in the zone will be
the same time configure the heater for the desired
configured as satellite heaters and will modulate
heat demand device (zone sensor, thermostat,
based on control signaling from the central heater.
analog input, or 10K Ohm pot.). If jumpers on J10 are
Zoning capability allows any CTH3-Series heater
positioned for "analog", jumper on J9 must be
(regardless of input) to modulate based on the signal positioned for either 0-10 Vdc or 4-20 mA. If jumpers
from the central heater. During modulation, each
on J10 are not positioned for "analog", the J9 jumper
satellite heater will operate at the same percentage
may be left alone.
of full rated input as the central heater.
FIGURE 23: Central Heater Jumper Settings
40 of 71
SECTION 10: WIRING
10.2.2 Satellite Heater Configuration
Satellite heater configuration is set by positioning of
jumpers on pin block J10 located on the control board
inside the heater compartment, See Page 41, Figure
24. Jumper position on J10, shown on Page 41,
Figure 24 will configure heater as a satellite heater.
(The jumper position for satellite is the same as the
jumper position of a central heater using a zone
sensor). Jumper on J9 may be left alone.
FIGURE 24: Satellite Heater Jumper Setting
41 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10.3 Communication Wiring within a Zone of Heaters
Satellite heaters will be wired in series to the central Communication wiring uses the T28-T31 terminals
heater via low voltage control wiring.
on the control, see Page 42, Figure 25.
FIGURE 25: Communication Wiring within a Zone of Heaters
CENTRAL HEATER CONTROL
42 of 71
SECTION 10: WIRING
10.3 Communication Wiring within a Zone of Heaters (continued)
Satellite heaters will be wired in series to the central heater via low voltage control wiring.
Communication wiring uses the T28-T31 terminals on the control, See Page 42 through Page 43, Figure 25.
FIGURE 25: Communication Wiring within a Zone of Heaters (continued)
43 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10.4 Heat Demand Control Wiring
The heater input can be controlled by any one of the
following heat demand control devices (control
devices are wired to central heaters only):
10.4.1 Zone Sensor
The zone sensor (P/N 10081530) offers automatic
control of heater input. Heater(s) modulates based
on difference between sensed air temperature and
the temperature setpoint. Heater modulation in
response to air temperature changes is immediate.
Setpoint is adjusted with the slide bar adjustment at
the bottom of the sensor. ON/OFF switch (used to
disable heater operation or reset heater from lockout)
is located on the side of the sensor. See Page 39,
Figure 22 for wiring details.
10.4.2 Thermostat
A thermostat offers automatic control of heater input.
The heater control is designed for use with a
standard 2-wire or 4-wire low voltage electronic
thermostat (not for use with thermostats that have a
heat anticipator). Typical wiring connects the R and
FIGURE 26: Thermostat Control Wiring Diagram
W wires to the heater control and does not connect
the Y (cooling) and G (fan) wires to the heater
control.
The heater can be used with thermostat, 24V (p/n
90425100) if set to 5 cycles per hour. Any other
electronic thermostat without heat anticipator can be
used if set to 5 or 6 cycles per hour.
On the control, the T24 and T25 (R and W) terminals
supply 24 V to power an electronic thermostat. See
Page 44, Figure 26 for wiring details. Consult the
factory for other thermostat wiring configurations.
Heater(s) modulates based on heater and thermostat
cycle timing, history and desired setpoint by using a
pre-programmed algorithm. When using thermostat
control, heater modulation response to rapid air
temperature change is not immediate. Thermostat
control is not recommended for use in areas with
frequent or high air changes.
It is important to note that during normal operation,
heater cycle continues beyond meeting thermostat
setpoint.
CENTRAL HEATER CONTROL
SATELLITE HEATER CONTROL
*OPTIONAL
SWITCH
T
W
R
THERMOSTAT
THERMOSTAT
T24
T24
R
R
T25
T25
W
W
T26
T14
T27
T13
T14
SLIDE
BAR GND
T16
T15
T16
T17
T19
T28
T28
J10 JUMPER POSITION
SHOWS "CENTRAL"
DESIGNATION AND
"THERMOSTAT"
CONTROL METHOD.
T30
T31
J10
MODULATION CONTROL WIRING
TO SATELLITE HEATERS
J10 JUMPER POSITION
SHOWS "SATELLITE" DESIGNATION.
T30
FIRING
RATE
+ OUT -
FIRING
RATE
+ OUT -
T31
T29
FIRING
RATE
+ IN -
FIRING
RATE
+ IN -
T29
EXT. POT
T18
HIGH WIPER GND
EXT. POT
T19
T17
HIGH WIPER GND
T18
SLIDE
BAR GND
T15
ANALOG
INPUT THERMISTOR
GND
+
-
T13
ANALOG
INPUT THERMISTOR
GND
+
-
T27
T26
J10
MODULATION CONTROL WIRING
TO ADDITIONAL SATELLITE
HEATER CONTROL TERMINALS
T28 AND T29.
* Separate on/off switch is optional for "satellite" heaters (install at user level).
On/Off switch is used to disable heater operation or reset a heater that is in "lockout" mode.
If on/off switch is not desired, leave jumper wire between R and W terminals in place.
44 of 71
SECTION 10: WIRING
10.4.3 Analog Signal Modulating Thermostat (P/N
90425105)
A programmable, 7-day programming, modulating
thermostat can be installed to supply an analog (420mA) or (2-10Vdc with 500 Ohm resistor) control
signal to dictate the heater(s) firing rate. The
thermostat shall energize the T24 and T25 (R and
W) terminals. For thermostat wiring, See Page 49,
Figure 29 and Page 50, Figure 30. Optional room
sensors (P/N 10081520) and outdoor air sensors
(P/N 10081521) are available.
Room temperature averaging networks can be
created with up to nine room sensors (P/N
10081520). Refer to thermostat installation
instructions for wiring.
10.4.4 Analog Signal Modulating Thermostat with
LonWorks Communication (P/N 90425104)
®
®
If LonWorks communication is required, a
modulating thermostat can be installed to supply an
analog (4-20mA or 2-10Vdc) signal to control the
heater(s) firing rate. For thermostat wiring, See Page
49, Figure 29 and Page 50, Figure 30. Optional room
sensors (P/N 10081520) and outdoor air sensors
(P/N 10081521) are available for this thermostat, as
well.
®
allow integral peer to peer BACnet MS/TP LAN
network communications with configurable baud
rates and can easily integrate with a building
automation system.
MS/TP Wiring
Connect the -A terminal in parallel with all other -A
terminals on the network and the +B terminal in
parallel with other +B terminals.
10.4.6 Sequence of Operation for Modulating
Thermostats
The thermostat will control the heater(s) firing rate
based on the demand signal communicated from
thermostat program taking into account space
temperature. The thermostat will energize T25 (W)
terminal. At high heat, a demand signal will turn the
heater(s) on at maximum heater(s) firing rate. Once
the room temperature gets close to the thermostat
set point, then the thermostat program will slow the
heater(s) firing rate down until the room temperature
reaches the thermostat set point.
®
The modulating thermostat with LonWorks provides
networking capability in a LonWorks system.
Communications port running at 78 kilobits per
second (kbs), this thermostat can be configured to
perform a variety of activities in which data is sent or
received on the LonWorks . Information that can be
shared, viewed and modified with network includes:
• Current year, month, day, hour, minute, second.
• System Mode.
• Space Temperature
• Outdoor air temperature
• Current setpoint
• Occupied/Unoccupied schedule commands.
• Space Temperature
®
®
®
10.4.5 Analog signal Modulating with BACnet
Programmable Thermostat (P/N 90425109).
®
®
If BACnet communication is required, a BACnet
enabled modulating thermostat can be installed to
supply an analog output (0-10VDC) signal control to
dictate the heater(s) firing rate. For thermostat wiring,
See Page 51, Figure 31.
This thermostat is a flexible wall-mounted standalone control with combined controller/sensor.
Temperature sensing is standard with optional
humidity and motion sensing. BACnet connections
®
45 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10.4.7 Cable Termination
Table lists wiring types, sizes and distances for
modulating thermostat with LonWorks
communication (P/N 90425104), modulating
thermostat without communication (P/N 90425105)
and BACnet programmable thermostat
(P/N 90425109)
®
®
Table 4: Cable Requirements
Wire Function
Recommended Wire Size
(Minimum)
Digital Outputs
Modulating Outputs
Outdoor Air Temperature Sensor
Remote Sensor
18 AWG (0.75 sq mm)
18 AWG (0.75 sq mm)
18 AWG (0.75 sq mm)
18 to 22 AWG
(0.75 to 0.34 sq mm)
Power Wiring
18 to 14 AWG
( 0.75to 2.0 sq mm)
LonWorks (P/N 90424104 only) 18 AWG
(0.75 sq mm) nonshielded
®
MS/TP (P/N 90425109)
18 AWG (0.75 sq mm) Shield
Specification or
Requirement
Standard thermostat wire
1 pair
1 pair
Twisted pair wire
NEC Class II 140ºF (60°C )
1000 ft (304 m)
500 ft (152 m)
500 ft (152 m)
1000 ft (304 m)
Limited by line-loss effects on power
consumption.
1 pair
Refer to E-bus Wiring Guide 74-2865
for maximum length and generic cable
specifications.
Belden cable #82760 or equivalent Refer to Thermostat Installation Guide
Power Requirements
Modulating thermostats require 24 volts, AC power.
10.4.8 Remote Analog Signal
Remote Analog Signal 0-10 Vdc or 4-20mA output
from external controller or Building Management
System (BMS) directly dictates heater(s) firing rate.
An algorithm must be programmed into the BMS or
external controller to receive zone air temperature
signals from its own temperature sensors and then
deliver an output signal to the heater(s) for the
desired firing rate.
For 0-10Vdc control of the heater(s) firing rate, the
following control conditions apply:
ON/OFF relay at the external controller or BMS must
be wired to R and W terminals on the heater control
board to turn the heater ON and OFF.
Minimum rated input at 1% of signal (0-1Vdc).
Full rated input at 90% of signal (9Vdc).
Input varies linearly between 1Vdc and 9Vdc.
46 of 71
Distance (Maximum)
SECTION 10: WIRING
For 4-20mA control of the heater(s) firing rate, the
following control conditions apply:
ON/OFF relay at the external controller or BMS must
be wired to R and W terminals on the heater control
board to turn the heater ON and OFF.
(Open Circuit = OFF, Closed Circuit = ON).
Minimum rated input at 1% of signal (0-4 mA).
Full rated input at 90% of signal (18 mA).
Input varies linearly between 4 mA and 18 mA.
2. Based on sensed temperatures, the BMS will
output an analog signal for the desired heater(s)
firing rate.
3. As heater(s) receive the analog signal from the
BMS, the heater(s) modulate to the corresponding firing rate.
4. As sensed air temperature rises closer to the
desired temperature setpoint, the BMS will
reduce the output signal, in turn reducing heater
firing rate.
5. Upon satisfying temperature setpoint, the BMS
will either:
a. Turn off the heater.
b. Reduce the signal so that the minimum
heater firing rate is maintained until the
sensed temperature rises above the
setpoint to a cut-off limit temperature when
the BMS turns off the heater.
BMS controllers often offer PID loop control that can
optimize output signal and rate of change of the
output signal. Common analog application is defined
as follows:
1. BMS sensors that monitor zone air
temperatures are located in the heating space.
FIGURE 27: Analog Control Signal Wiring Diagram
ON/OFF SWITCH
REQUIRED
CENTRAL HEATER CONTROL
SATELLITE HEATER CONTROL
*OPTIONAL
SWITCH
THERMOSTAT
T24
THERMOSTAT
T24
R
R
T25
T25
W
W
T26
T14
T13
T14
T17
HIGH
HIGH
T19
J9
GND
GND
T28
T28
J10
MODULATION CONTROL WIRING
TO SATELLITE HEATERS
J10 JUMPER POSITION
SHOWS "SATELLITE" DESIGNATION.
T30
T31
FIRING
RATE
+ OUT -
FIRING
RATE
+ OUT -
A B
T29
FIRING
RATE
IN -
FIRING
RATE
IN -
+
+
J10 JUMPER POSITION
SHOWS "CENTRAL"
DESIGNATION AND
"ANALOG" CONTROL METHOD.
T30
T31
EXT. POT
J9
WIPER
T18
EXT. POT
WIPER
T19
T29
FOR SATELITTE
CONTROLLERS, J9 JUMPER CAN BE
LEFT IN ORIGINAL POSITION
REGARDLESS OF CONTROL METHOD.
T16
GND
GND
T17
T15
SLIDE
BAR
SLIDE
BAR
T16
GND
GND
ANALOG INPUT CONTROL IS
USED TO SELECT ANALOG
SIGNAL TYPE 0-10Vdc OR 4-20mA
(4-20mA POSITION SHOWN).
T15
T18
THERMISTOR
T13
ANALOG
INPUT
-
T27
THERMISTOR
REMOTE ANALOG
CONTROL
SIGNAL FROM SEPARATE
CONTROLLER
0-10Vdc OR 4-20mA
ANALOG
INPUT
-
T27
-
+
+
+
T26
AB
J10
MODULATION CONTROL WIRING
TO ADDITIONAL SATELLITE
HEATER CONTROL TERMINALS
T28 and T29.
* Separate on/off switch is optional for "satellite" heaters (install at user level). On/Off switch is used to
disable heater operation or reset a heater that is in "lockout" mode. If on/off switch is not desired, leave
jumper wire between R and W terminals in place.
47 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10.4.9 Potentiometer Control Device
Potentiometer (10K Ohm"Linear Taper") device offers
manual control over heater(s) firing rate. This type of
potentiometer can be found at Radio Shack .
Potentiometer dial position directly dictates heater(s)
firing rate. Dial positions range between "Min" and
"Max". Minimum and maximum heater firing rates
(inputs) are marked on the heater's rating plate. ON/
OFF switch or thermostat is used to disable heater
operation or reset heater from lockout.
®
FIGURE 28: Potentiometer Control Wiring Diagram
ON/OFF SWITCH
or THERMOSTAT
CENTRAL HEATER CONTROL
SATELLITE HEATER CONTROL
*OPTIONAL
SWITCH
THERMOSTAT
T24
THERMOSTAT
T24
R
R
T25
T25
W
W
T26
T26
T27
T13
T14
GND
GND
T15
T15
SLIDE
BAR
SLIDE
BAR
T16
T16
GND
GND
T17
T17
GND
GND
T28
MODULATION CONTROL WIRING
TO SATELLITE HEATERS
J10 JUMPER POSITION
SHOWS "SATELLITE" DESIGNATION.
T30
T31
FIRING
RATE
+ OUT -
FIRING
RATE
+ OUT -
J10
T29
FIRING
RATE
IN -
FIRING
RATE
IN -
A B
+
+
J10 JUMPER POSITION
SHOWS "CENTRAL"
DESIGNATION AND
"POTENTIOMETER"
CONTROL METHOD.
T30
T31
EXT. POT
T19
T28
T29
WIPER
T18
EXT. POT
WIPER
T19
HIGH
HIGH
T18
THERMISTOR
THERMISTOR
T14
ANALOG
INPUT
-
ANALOG
INPUT
-
T13
POTENTIOMETER
(10K Ohm)
+
+
T27
A B
J10
MODULATION CONTROL WIRING
TO ADDITIONAL SATELLITE
HEATER CONTROL TERMINALS
T28 AND T29.
* Separate on/off switch is optional for "satellite" heaters (install at user level).
On/Off switch is used to disable heater operation or reset a heater that is in "lockout" mode.
If on/off switch is not desired, leave jumper wire between R and W terminals in place.
48 of 71
SECTION 10: WIRING
®
FIGURE 29: Modulating Thermostat Wiring Diagram (LonWorks [4-20 mA] optional)
®
NOTE: 1. For non-communicating thermostats without LonWorks bus, thermostat terminals marked "EB"
will be marked "_____" and no LonWorks bus communication wires are used.
®
* Separate on/off switch is optional for "satellite" heaters (install at user level).
On/Off switch is used to disable heater operation or reset a heater that is in "lockout" mode.
If on/off switch is not desired, leave jumper wire between R and W terminals in place.
Description
Thermostat, modulating
Thermostat, modulating LonWorks
®
Part Number
90425105
90425104
49 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
®
FIGURE 30: Modulating Thermostat Wiring Diagram (LonWorks [2-10Vdc with 500 Ohm resistor]
optional)
®
NOTE: 1. For non-communicating thermostats without LonWorks bus, thermostat terminals marked "EB"
will be marked "_____" and no LonWorks bus communication wires are used.
®
* Separate on/off switch is optional for "satellite" heaters (install at user level).
On/Off switch is used to disable heater operation or reset a heater that is in "lockout" mode.
If on/off switch is not desired, leave jumper wire between R and W terminals in place.
Description
Thermostat, modulating
Thermostat, modulating LonWorks
50 of 71
®
Part Number
90425105
90425104
SECTION 10: WIRING
®
FIGURE 31: Modulating Thermostat Wiring Diagram with BACnet (optional)
NOTES:
1. A jumper is pre-installed between phase
R(24VAC) and SC1-3 (24VAC Relay).
2. Ground ONLY ONE END of the shielded cable.
* Separate on/off switch is optional for "satellite"
heaters (install at user level). On/Off switch is used
to disable heater operation or reset a heater that is
in "lockout" mode. If on/off switch is not desired,
leave jumper wire between R and W terminals in
place.
Description
Thermostat, modulating BACnet
®
Part Number
90425109
51 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10.5 Internal Wiring
See Page 39, Section 10.1 through Page 48, Section
10.4.9 for temperature control device options and
wiring schematic.
52 of 71
SECTION 10: WIRING
10.6 Ladder Diagram
L2
L1
120V
BLK
WHT
24V
GAS VALVE
YEL
BLU
BRN
BRN
WHT
PRP
BRN
BLK
ORG
BLU
DOOR
SWITCH
GRN
GRN
BLU
BLU
BLU
BLU
BLK
MOTOR
BLU
AIR SWITCH
BLK
WHT
CONTROL
BLK
BLK
WHT
HOT
SURFACE
IGNITER
FLAME
SENSOR
See Page 39, Section 10.1 through Page 48, Section 10.4.9 for temperature control device options and
wiring schematic.
53 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10.7 Line Voltage Power Wiring
Burner 1
Burner 2
Gnd.
120 V-60 Hz
Supply Circuit
H
L1
L2
Gnd.
N
Burner 3
Gnd.
H
N
Gnd.
H
NOTE: The burners must have an uninterrupted 120 V, 60 Hz, 1 Ø power supply.
10.8 Electrical Connection to the Burner
Electrical Cord or
Flexible Conduit
BX or Romex Connector
Burner
54 of 71
N
Connect wires together
with suitable approved
wire connectors.
L1
L2
Ground
Green to Ground
White to L2
Black to L1
Black
White
Green
Junction Box
SECTION 10: WIRING
10.9 Low Voltage Control Wiring Installation
Description
Cable Grommet with Tie
Part Number
91309605
55 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 11: OPERATION AND MAINTENANCE
WARNING
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
Explosion Hazard
Turn off gas supply to
heater before service.
Heater must be
connected to a properly
grounded electrical
source.
Burn Hazard
Allow heater to cool
before service.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Tubing may still be hot
Edges are sharp.
after operation.
Failure to follow these instructions can result in death, electric shock, injury or property damage.
11.1 Sequence of Operation
The control inside the heater's control compartment
is equipped with a tri-color LED. The LED offers
comprehensive diagnostic capability. The LED
status will be referenced throughout this section.
1. When the control is powered and there is no call
for heat from external heat demand device, the
LED on the control flashes slow green; LED is
ON for the same period it is OFF.
2. On a call for heat from the heat demand device,
the heater will go to PRE-PURGE. The LED
indicates one green flash. The blower speed will
vary as the pressure switch setpoints are
verified. When the PRE-PURGE is successfully
completed, the heater will go into the
PRE-IGNITION state and power the hot surface
igniter (H.S.I.).
3. After the igniter warms up, the heater will go to
the IGNITION state. Power is supplied to the
gas valve operator, gas flows, ignites and the
flame is proven. The LED shows two green
flashes on the LED. If a flame is not sensed, the
heater will RETRY, See Item 6 below for further
details.
4. When the IGNITION state is completed, the
heater will go to WARM UP state. The unit will
fire at maximum input for 15 seconds. When the
WARM UP state is completed the device will go
into RUN state. The control board will monitor
the heat demand device and modulate the
heater input to meet the demand. The LED still
shows two green flashes.
5. When the call for heat has been satisfied, the
heater closes the gas valve. The blower
56 of 71
continues to run for a 45 second post-purge
period. After the post-purge, the heater turns
OFF and the LED on the control board flashes
slow green.
6. If flame is lost at any time during heater
operation, the heater will RETRY for ignition.
Upon RETRY the LED shows a fast yellow flash
(LED rapidly flashes). The heater will RETRY for
ignition three times. After four ignition attempts,
the heater will lockout for one hour or until reset.
To reset the heater, remove power for 10
seconds, then re-apply power. Turn heater ON
with call for heat from the heat demand device.
11.2 To Shut Off Heater
Set external heat demand device to lowest setting.
Turn OFF electric power to heater.
Turn OFF manual gas valve in the heater supply line.
11.3 To Start Heater
Turn gas valve and electric power OFF and wait five
minutes for unburned gases to vent from heater.
Turn ON main gas valve.
Turn ON electric power.
Set heat demand device to desired temperature.
Burner should light automatically.
11.4 Pre-Season Maintenance and Annual
Inspection
To ensure your safety and years of trouble-free
operation of the heating system, service and annual
inspections must be done by a contractor qualified in
the installation and service of gas-fired heating
equipment.
Turn off gas and electric supplies before performing
SECTION 11: OPERATION AND MAINTENANCE
service or maintenance. Allow heater to cool before
servicing.
Before every heating season, a contractor qualified in
the installation and service of gas-fired heating
equipment must perform a thorough safety
inspection of the heater.
For best performance, the gas, electrical, thermostat
connections, tubing, venting, suspensions and
overall heater condition should be thoroughly
inspected.
NOTE: Gas flow and burner ignition are among the
first things that should be inspected.
Please See Page 57 for suggested items to inspect.
The Vicinity of the Heater
Vehicles and Other
Objects
Installation Code and Annual Inspections:
All installation and service of ROBERTS GORDON
equipment must be performed by a contractor
qualified in the installation and service of equipment
sold and supplied by Roberts-Gordon LLC and
conform to all requirements set forth in the
ROBERTS GORDON manuals and all applicable
governmental authorities pertaining to the
installation, service, operation and labeling of the
equipment.
To help facilitate optimum performance and safety,
Roberts-Gordon LLC recommends that a qualified
contractor conduct, at a minimum, annual
inspections of your ROBERTS GORDON equipment
and perform service where necessary, using only
replacement parts sold and supplied by RobertsGordon LLC.
Do not store or use flammable objects, liquids or vapors near the heater.
Immediately remove these items if they are present.
®
®
®
See Page 5, Section 3.
Maintain the clearances to combustibles.
Do not hang anything from, or place anything on, the heater.
Make sure nothing is lodged underneath the reflector, in between the tubes or
in the decorative or protective grilles (included with select models).
Immediately remove objects in violation of the clearances to combustibles.
Reflector
See Page 5, Section 3.
Support reflector with reflector hanger and support strap.
Reflector must not touch tube.
Make sure there is no dirt, sagging, cracking or distortion.
Do not operate if there is sagging, cracking or distortion.
Make sure reflectors are correctly overlapped. See Page 20, Section 6.5.1.
Vent Pipe
Clean outside surface with a damp cloth.
Venting must be intact. Using a flashlight, look for obstructions, cracks on the
pipe, gaps in the sealed areas or corrosion.
The area must be free of dirt and dust. Clean as required.
Remove any carbon deposits or scale using a wire brush.
Outside Air Inlet
Tubes
See Page 31, Section 8.
Inlet must be intact. Look for obstructions, cracks on the pipe, gaps in the
sealed areas or corrosion.
The area must be free of dirt and dust. Clean and reinstall as required.
Make sure there are no cracks.
Make sure tubes are connected and suspended securely.
See Page 12, Section 6.
Make sure there is no sagging, bending or distortion.
Clean or replace as required.
57 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Gas Line
Burner Observation
Window
Blower Scroll, Wheel and
Motor
Burner Cup and Orifice
Check for gas leaks. See Page 37, Section 9.
Make sure it is clean and free of cracks or holes.
Clean and replace as required.
Compressed air or a vacuum cleaner may be used to clean dust and dirt.
Clear of obstructions (even spider webs will cause problems).
Carefully remove any dust and debris from the burner.
Replace if cracked or broken.
Hot-Surface Igniter
Heat Demand Device:
Thermostat, Zone Sensor, There should be no exposed wire or damage to the device or wiring.
External Pot or 0-10 Vdc or See Page 39, Section 10.
4 - 20 mA wiring
Suspension Points
Make sure the heater is hanging securely.
Look for signs of wear on the chain or ceiling.
See Page 13, Figure 14.
Decorative and Protective The grille must be securely attached.
Grille (optional)
Check that the side reflector extensions are installed correctly and secured in
place if necessary. (Decorative grille only.)
See Page 28, Section 7.5 and Page 30, Section 7.6
Lower Clearance Shield
(optional)
Make sure shield is installed correctly and secured in place if necessary.
(Decorative grille only.) See Page 29, Section 7.5.2.
The lower shield must be securely attached.
Inspect shield support straps and lower clearance shield anchor points.
See Page 28, Section 7.4.
Make sure shield is installed correctly and secured in place if necessary.
Silicone Tubing
Gas Valve
See Page 28, Section 7.4.
Ensure tight, secure fit on all pressure fittings at gas valve, pressure switch,
pressure sensor, burner partition, and blower outlet.
Verify silicone tubing has a tight secure fit on "vent" fitting.
Verify that plastic cap on covering pressure regulator adjustment screw is
secure and has not been tampered with.
Do not remove plastic regulator cap or attempt to adjust valve pressure
regulator.
Wall Tag
Verify all wiring connections.
If wall tag is present, make sure it is legible and accurate. Please contact
Roberts-Gordon LLC or your ROBERTS GORDON independent distributor, if
you need a wall tag. See Page 4, Section 2.1.
Product safety signs or labels should be replaced by the product user when
they are no longer legible. Please contact Roberts-Gordon LLC or your ROBERTS GORDON independent distributor to obtain replacement signs or
labels. See Page 2, Figure 1 through Page 3, Figure 2.
®
Safety Labels
®
58 of 71
SECTION 12: TROUBLESHOOTING
SECTION 12: TROUBLESHOOTING
DANGER
Electrical Shock Hazard
Disconnect electric before service.
More than one disconnect switch may be
required to disconnect electric from heater.
Heater must be properly grounded to an
electrical source.
Failure to follow these instructions can
result in death or electrical shock.
WARNING
Fire Hazard
Keep all flammable
objects, liquids and
vapors the minimum
required clearances to
combustibles away
from heater.
Explosion Hazard
Turn off gas supply to
heater before service.
Burn Hazard
Allow heater to cool
before service.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Tubing may still be hot
Edges are sharp.
after operation.
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.
59 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
12.1 Control LED
The control inside the heater's control compartment
is equipped with a tri-color LED. The LED offers
comprehensive diagnostic capability. The LED is
showing some form of status signal at all times when
the control is powered. The color of the LED
differentiates normal from error conditions as follows:
GREEN indicates normal operation.
RED indicates an error condition.
YELLOW (fast flashing) indicates a RETRY attempt.
LED NOT LIT indicates no power to control.
AMBER,
Fast Flashing:
RED Steady LED:
Control FAILURE,
No 24 V power supply.
RED, 1 flash:
Lockout- Insufficient sensed
air pressure when blower is
on.
Condition could be caused by:
• Air Side Door
• Blower
• Obstruction in
inlet or outlet
• Pressure hose fittings
• Pressure Switch
RED, 2 flashes:
Lockout- Blower air pressure
reads above zero level when
blower is off.
Condition is caused by
a pressure sensor failure or
complete blockage of air
intake or exhaust vent.
Lockout- Flame is sensed on
when it should be off or off
when it should be on.
Could be caused by:
• Flame Rod
12.2 General LED Codes
No LED:
No Power to control.
Slow Green:
LED slowly flashes on and off,
indicates power to the control
board but no call for heat.
GREEN, 1 flash:
Call for heat indicates the
heater is performing the safe
start pre-purge function or
H.S.I. warm-up.
GREEN, 2 flashes:
Heater is in RETRY mode.
RED, 3 flashes:
Call for heat indicates the
heater is performing light off,
heater warm-up, or heater run.
• H.S.I.
GREEN, 3 flashes:
*Only applicable for
thermostat control*
Gas ON - No call for heat, unit
modulating from single stage
thermostat.
AMBER, 1 flash:
Call for heat when flame signal
is below 1µA
AMBER, 2 flashes:
Gas ON - Call for heat when
flame signal is below 1µA
AMBER, 3 flashes:
*Only applicable for
thermostat control*
Gas ON - No call for heat, unit
modulating from single stage
thermostat when flame signal
is below 1µA.
• Gas Supply
• 120 V Supply Polarity
• Board Fault
RED, 4 flashes:
Lockout- Gas Valve.
Condition caused by main
valve on gas valve.
Check gas valve wiring.
RED, 5 flashes:
Lockout- Board Failure.
Board must be replaced.
RED, 6 flashes:
Not used.
RED, 7 flashes:
Lockout- Fuse Open.
Condition could be caused by:
• Fuse blown
• High Limit Switch open a
board location J3
60 of 71
SECTION 12: TROUBLESHOOTING
RED, 8 flashes:
Lockout- Pressure switch
failed to operate or modulation
current was incorrect.
Condition could be caused by:
• Pressure Sensor
• Pressure Switch
(faulty or hoses reversed)
• Gas Valve Modulation Coil
• Wire Harness (6 wire)
RED, 9 flashes:
Lockout- Air Supply.
Condition could be caused by:
• Blower
• Pneumatic Conections to
Pressure Sensor
• Blockage in flue or inlet
61 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
12.3 Troubleshooting Flow Chart
62 of 71
SECTION 12: TROUBLESHOOTING
63 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
12.4 Manifold Gas Pressure Measurement
WARNING
Carbon Monoxide Hazard
Do not adjust gas valve
pressure regulator.
Do not tamper with sealed parts.
Pressure regulator is factory
calibrated for safe operation.
Failure to follow these
instructions can result in death
or injury.
64 of 71
SECTION 12: TROUBLESHOOTING
12.5 Pneumatic Connections
65 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 13: REPLACEMENT PARTS
WARNING
DANGER
Electrical Shock Hazard
Explosion Hazard
Fire Hazard
Carbon Monoxide Hazard
Use only genuine ROBERTS GORDON® replacement parts per this installation, operation and
service manual.
Failure to follow these instructions can result in death, electric shock, injury or property damage.
66 of 71
SECTION 13: REPLACEMENT PARTS
67 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
Description
Gas Valve (Natural)
Gas Valve (LP)
Tube Gasket
Blower Inlet Gasket (80, 115 models)
Blower Inlet Gasket (150, 200 models)
Blower Assembly (80, 115)
Blower Assembly (150, 200)
Air Collar (80, 115 models)
Air Collar (150, 200 models)
Inlet Screen (80, 115)
Inlet Screen (150, 200)
Door Switch
Burner Cup Assembly
Hot Surface Igniter
Mica Window Assembly
Flame Sensor
Transformer
Fuse (Control) 3 A
Pressure Switch
(80 NG, 80 LP, 115 NG, 115 LP)
(150 NG, 150 LP, 200 NG, 200 LP)
Control
80NG
80LP
115NG
115LP
150NG
150LP
200NG
200LP
68 of 71
Part Number
90033105K
90033104K
02568200
03050900
90709910
90708602-P
90709900-P
91911700
91911701
03050800
09050001
90436800
03020100
90436600K
02553203
90439300
90436900K
91321403
90439812K
90439803K
90320109K
90320110K
90320111K
90320112K
90320113K
90320114K
90320115K
90320116K
SECTION 14: GENERAL SPECIFICATIONS
SECTION 14: GENERAL SPECIFICATIONS
14.1 Material Specifications
14.1.1 Reflectors
.024 Aluminum
(Optional .024 Stainless Steel Type 304)
14.2 Heater Specifications
14.2.1 Control System
Modulating Gas Valve and Hot Surface Electronic
Ignition Control with Four-try, 100% shut-off,
Prepurge, Post-Purge, Auto Reset, Tri-color LED
Status/Fault Indicator.
14.3 Suspension Specifications
Hang heater with materials with a minimum working
load of 75 lbs (33 kg). See Page 13, Figure 14.
14.4 Controls Specifications
Time switches, sensors, etc. can be wired into the
electrical supply. External controls supplied as an
optional extra.
General Specifications for the heaters are as follows:
End View
Side View
Minimum Length "A"
Reflector
13.5"
(34 cm)
9.5"
(24 cm)
Burner Tube
17.5"
(44 cm)
Turbulator
(Select Models)
Heat Input Rate
(NG)
Heat Input
Rate
(LP)
Length “A”
Model
(Btu/h) X (1000)
Min. to Max.
(Btu/h) X
(1000)
Min. to Max.
Minimum
Space
Spot
CTH3-80
52 to 80
55 to 80
20' (6m)
12'-15' (3.6 - 4.5 m)
11' (3.3 m)
CTH3-115
75 to 115
78 to 115
30' (9m)
15'-20' (4.5 - 6 m)
15' (4.6 m)
CTH3-150
100 to 150
105 to 150
40' (12m)
20'-25' (6 - 7.6 m)
20’ (6.1 m)
CTH3-200
130 to 200
135 to 190
50' (15m)
25' (7.6 m)
23' (7 m)
Recommended
Minimum Mounting Height*
*See Page 5, Section 3 for clearances to combustibles.
GAS PRESSURE AT MANIFOLD:
Natural Gas:
4.5" wc
LP Gas:
11.0" wc
PIPE CONNECTION:
1/2" NPT (for 80 & 115 models)
3/4" NPT (for 150 & 200 models)
DIMENSIONS:
Vent Connection Size:
4" (10 cm)
Outside Air Connection Size:
5" (13 cm) for 150 & 200 models
4" (10 cm) for 80 & 115 models
Refer to figure above for dimensional information.
GAS INLET PRESSURE:
Natural Gas:
for 80, 115 & 150 models
5.5" wc Minimum
14.0" wc Maximum
for 200
6.0" wc Minimum
14.0" wc Maximum
LP Gas:
12.0" wc Minimum
14.0" wc Maximum
ELECTRICAL RATING (ALL MODELS):
120V - 60 Hz., 4.8 A (start), 1.3 A (run)
69 of 71
CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
70 of 71
®
®
SECTION 15: THE ROBERTS GORDON VANTAGE MODULATING WARRANTY
SECTION 15: THE ROBERTS GORDON
VANTAGE MODULATING WARRANTY
ROBERTS-GORDON WILL PAY FOR:
®
®
Within 36 months from date of purchase by buyer or 42
months from date of shipment by Roberts-Gordon LLC
(whichever occurs first), replacement parts will be provided
free of charge for any part of the product which fails due to
a manufacturing or material defect.
Roberts-Gordon LLC will require the part in question to be
returned to the factory. Roberts-Gordon LLC will, at its sole
discretion, repair or replace after determining the nature of
the defect and disposition of part in question.
ROBERTS GORDON Replacement Parts are warranted
for a period of 12 months from date of shipment from
Roberts-Gordon LLC or the remaining ROBERTS
GORDON VANTAGE MODULATING warranty.
®
®
®
ROBERTS-GORDON WILL NOT PAY FOR:
Service trips, service calls and labor charges.
Shipment of replacement parts.
Claims where the total price of the goods have not
been paid.
Damage due to:
• Improper installation, operation or maintenance.
• Misuse, abuse, neglect, or modification of the
ROBERTS GORDON VANTAGE MODULATING in
any way.
• Use of the ROBERTS GORDON VANTAGE MODULATING for other than its intended
purpose.
• Incorrect gas or electrical supply, accident, fire, floods,
acts of God, war, terrorism, or other casualty.
• Improper service, use of replacement parts or accessories not specified by Roberts-Gordon.
• Failure to install or maintain the ROBERTS GORDON
VANTAGE MODULATING as directed in the Installation, Operation and Service manual.
• Relocation of the ROBERTS GORDON VANTAGE
MODULATING after initial installation
• The use of the ROBERTS GORDON VANTAGE
MODULATING in a corrosive atmosphere containing
contaminants.
• The use of the ROBERTS GORDON VANTAGE
MODULATING in the vicinity of a combustible or explosive material.
• Any defect in the ROBERTS GORDON VANTAGE
MODULATING arising from a drawing, design, or specification supplied by or on behalf of the consumer.
• Damage incurred during shipment. Claim must be filed
with carrier.
®
®
®
®
®
®
®
®
®
®
®
®
®
®
WARRANTY IS VOID IF:
®
®
The ROBERTS GORDON VANTAGE MODULATING is
not installed by an electrician qualified in the installation
and service of gas fired heating equipment.
You cannot prove original purchase date and required
annual maintenance history.
The data plate and/or serial number are removed,
defaced, modified or altered in any way.
The ownership of the ROBERTS GORDON VANTAGE
MODULATING is moved or transferred. This warranty is
nontransferable.
Roberts-Gordon LLC is not permitted to inspect the
damaged controller and/or component parts.
®
®
READ YOUR INSTALLATION, OPERATION AND
SERVICE MANUAL
If you have questions about your controller, contact your
installing professional. Should you need Replacement
Parts or have additional questions, call or write:
Roberts-Gordon LLC
1250 William Street
P.O. Box 44
Buffalo, New York 14240-0044
Telephone: +1.716.852.4400
Fax: +1.716.852.0854
Toll Free: 800.828.7450
www.rg-inc.com
www.radiantheaters.com
Roberts-Gordon LLC's liability, and your exclusive
remedy, under this warranty or any implied warranty
(including the implied warranties of merchantability
and fitness for a particular purpose) is limited to
providing replacement parts during the term of this
warranty. Some jurisdictions do not allow limitations on
how long an implied warranty lasts, so this limitation may
not apply to you. There are no rights, warranties or
conditions, expressed or implied, statutory or otherwise,
other than those contained in this warranty.
Roberts-Gordon LLC shall in no event be responsible
for incidental or consequential damages or incur
liability for damages in excess of the amount paid by
you for the ROBERTS GORDON VANTAGE
MODULATING. Some jurisdictions do not allow the
exclusion or limitation of incidental or consequential
damages, so this limitation or exclusion may not apply to
you. This warranty gives you specific legal rights, and you
may also have other rights which vary from jurisdiction to
jurisdiction.
®
®
Roberts-Gordon LLC shall not be responsible for failure to
perform under the terms of this warranty if caused by
circumstances out of its control, including but not limited to
war, fire, flood, strike, government or court orders, acts of
God, terrorism, unavailability of supplies, parts or power.
No person is authorized to assume for Roberts-Gordon
LLC any other warranty, obligation or liability.
LIMITATIONS ON AUTHORITY OF
REPRESENTATIVES:
No representative of Roberts-Gordon LLC, other than an
Executive Officer, has authority to change or extend these
provisions. Changes or extensions shall be binding only if
confirmed in writing by Roberts-Gordon LLC's duly
authorized Executive Officer.
71 of 71
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement