Vantage Hearth TF-120 Manual

WARNING
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. DO NOT try to light any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your building.
5. Extinguish any open flame.
6. Leave the building.
7. Immediately call your local gas
supplier after leaving the building.
Follow the gas supplier’s
instructions.
8. If you cannot reach your gas
supplier, call the Fire Department.
Fire Hazard
Keep all flammable objects, liquids and
vapors the minimum required clear-
ances to combustibles away from
heater.
Some objects will catch fire or explode
when placed close to heater.
Failure to follow these instructions can
result in death, injury or property
damage.
WARNING
Installation must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment or your gas supplier.
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or
property damage. Read the Installation, Operation
and Service Manual thoroughly before installing or
servicing this equipment.
Installer
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Owner
Keep this manual in a safe place in order to provide
your service technician with necessary information.
Roberts-Gordon LLC
1250 William Street
P.O. Box 44
Buffalo, New York 14240-0044
Telephone: [phone]
www.robertsgordon.com
© 2021 Roberts-Gordon LLC
TF-120
TF-160
TF-200
TF-250
TF-300
TF-350
TF-380
P/N 190100NA Rev. N 06/21
Model TF
Twin Fire
Unitary Infrared Heater
Installation, Operation &
Service Manual

© 2020 Roberts-Gordon LLC
All rights reserved. No part of this work covered by the copyrights herein may be reproduced
or copied in any form or by any means - graphic, electronic, or mechanical, including
photocopying, recording, taping or information storage and retrieval systems - without the
written permission of Roberts-Gordon LLC.
TABLE OF CONTENTS
SECTION 1: Heater Safety ...................................................... 1
1.1 Manpower Requirements ............................................. 1
1.2 Safety Labels and Their Placement.............................. 1
1.3 California Proposition 65 .............................................. 1
SECTION 2: Installer Responsibility......................................4
2.1 Wall Tag ....................................................................... 4
2.2 Corrosive Chemicals.................................................... 4
2.3 National Standards and Applicable Codes...................4
SECTION 3: Clearances to Combustibles............................. 5
3.1 Required Clearances to Combustibles......................... 5
SECTION 4: National Standards and Applicable Codes.... 10
4.1 Gas Codes................................................................. 10
4.2 Aircraft Hangars ......................................................... 10
4.3 Public Garages .......................................................... 10
4.4 Electrical .................................................................... 10
4.5 Venting ....................................................................... 10
4.6 High Altitude .............................................................. 10
SECTION 5: Major Components .......................................... 11
5.1 Standard Parts List .................................................... 13
SECTION 6: Suggested Layouts.......................................... 17
6.1 TF-380 - 4 Elbow Design (Common Vent) ................. 17
6.2 TF-350 - 4 Elbow Design (Common Vent) ................. 17
6.3 TF-300 - Double "U" Design (Common Vent)............. 17
6.4 TF-160 - Single Elbow Design (Individual Vents) ....... 18
6.5 TF-160 - Double "L" Design (Individual Vents)........... 18
6.6 TF-250 - Combination "L" and "U" Design (Individual
Vents)............................................................................... 18
SECTION 7: Heater Installation............................................ 19
7.1 Burner Tube Installation ............................................ 24
7.2 Burner Installation......................................................24
7.3 Tube Clamp Package Installation.............................. 25
7.4 Turbulator Installation ................................................ 28
7.5 Swirler Installation ..................................................... 29
7.6 Reflector Installation ...................................................35
SECTION 8: Optional Heater Accessories .......................... 37
8.1 U-Tube Configuration.................................................37
8.2 Elbow Package Configuration ....................................41
8.3 Reflector Side Extension............................................ 43
8.4 Lower Clearance Shield Installation .......................... 44
8.5 Two-Foot Decorative Grille Installation....................... 44
8.6 Protective Grille Installation........................................ 46
SECTION 9: Venting .............................................................. 47
9.1 Venting .......................................................................47
9.2 Unvented Operation...................................................48
9.3 Horizontal Venting (Category III) ............................ 48
9.4 Unvented Operation Tube Termination....................... 49
9.5 Vent Length Requirements ..................................... 49
9.6 Vent Material Recommendations ...............................49
9.7 Horizontal Venting (Category III) 4" (10 cm) Pipe
NOTE: It is required that all vent pipes and connectors be
fastened together with sheet metal screws and sealed with
high temperature silicone sealant approved for at least 550 °F
(288 °C) (supplied by others). The installer must perform a
leak test on the complete venting system. A solution of soap
and water should be used to test the venting system. ..... 49
9.8 Vertical Venting (Category III) 4'' (10 cm) Pipe........... 50
9.9 Flexible Boot Installation (Single Vent) ...................... 50
9.10 Common Side Wall Horizontal Venting (Category III)51
9.11 Common Vertical Venting (Category III) ................... 51
9.12 Flexible Boot Installation (Common Vent)................ 52
9.13 Outside Combustion Air Supply ............................... 53
SECTION 10: Gas Piping ...................................................... 55
SECTION 11: Wiring .............................................................. 57
11.1 Line Voltage Thermostat Wiring................................ 57
11.2 Low Voltage Thermostat and Relay Wiring ............... 58
11.3 Internal Wiring Diagram........................................... 59
11.4 Ladder Diagram....................................................... 59
11.5 Electrical Connection to the Burner.......................... 60
SECTION 12: Operation and Maintenance.......................... 61
12.1 Sequence of Operation............................................ 61
12.2 To Shut Off Heater ................................................... 61
12.3 To Start Heater......................................................... 61
12.4 Pre-Season Maintenance and Annual Inspection.... 61
12.5 Maintenance Checklist............................................. 62
SECTION 13: Troubleshooting ............................................. 64
13.1 Troubleshooting Flow Chart ..................................... 65
13.2 Manifold Gas Pressure Setting ................................ 67
SECTION 14: Replacement Parts ........................................ 68
SECTION 15: General Specifications .................................. 71
15.1 Material Specifications............................................. 71
15.2 Heater Specifications............................................... 71
15.3 Suspension Specifications....................................... 71
15.4 Controls Specifications ............................................ 71
SECTION 16: The ROBERTS GORDON® VANTAGE® TF War-
ranty....................................................................................... 73
Printed in U.S.A.

SECTION 1: HEATER SAFETY
1
SECTION 1: HEATER SAFETY
Your Safety is Important to Us!
This symbol is used throughout
the manual to notify you of possi-
ble 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.
This heater is not certified to meet the requirements
of NFPA30A-2012 Section 7.6.6. (maximum tube
temperature of 750 °F (399 °C)). Do not install this
heater in facilities where compressed natural gas
(CNG) or liquid natural gas (LNG) are present. 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 in accordance to the
Occupational Safety and Hazard Administration
(OSHA). Gear must be in accordance to NFPA 70E,
latest revision when working with electrical
components. Thin sheet metal parts 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
Product safety signs or labels should be replaced by
the product user when they are no longer legible.
Please contact Roberts-Gordon LLC or your ROB-
ERTS GORDON® independent distributor to obtain
replacement signs or labels. See Page 2, Figure 1
through Page 3, Figure 2.
1.3 California Proposition 65
In accordance with California Proposition 65 require-
ments, a warning label must be placed in a highly
visible location on the outside of the equipment (i.e.,
near equipment’s serial plate). See label placement
drawing on Page 2, Figure 1 for label location. Avoid
placing label on areas with extreme heat, cold, corro-
sive chemicals or other elements. To order additional
labels, please contact Roberts-Gordon LLC or your
ROBERTS GORDON® independent distributor.

TF-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
2
FIGURE 1: Top and Bottom Panel Label Placement
Logo Label
Rating Plate Label
Bottom
Panel
Gas Connection Label
Lighting Instruction Plate Label
Top Panel
Proposition 65 Label
Description Part Number
Logo Label 91013221
Rating Plate Label 91010401
Gas Connection Label 91018124
Lighting Instruction Plate Label 91029602
Proposition 65 Label 91070016

SECTION 1: HEATER SAFETY
3
FIGURE 2: Side Panel Label Placement
FIGURE 3: Serial Number Identification Chart
Vent Length Label
Control Side Panel
Side Panel
Control Side Panel (Inside)
Wiring Label
Clearances to Combustibles Label
WARNING ATTENTION
One Side
Reflector
Réflecteur
à un côté
A
C
BD
Model/Modéle A B C D
TF-120 6 16 9 23 63161 47 12 0
TF-160 6 16 9 23 70178 54 13 8
TF-200 6 16 9 23 77196 59 15 0
TF-250 6 16 9 23 83211 6516 6
TF-300 6 16 9 23 86219 69 176
TF-350 8 21 9 23 88224 73 186
TF-380 8 21 18 46 102259 73 186
Two Side
Reflectors
Réflecteur
à deux côtés
A
C
BD
Model/Modéle A B C D
TF-120 6 16 23 59 66168 23 59
TF-160 6 16 25 64 72183 25 64
TF-200 6 16 27 69 78199 27 69
TF-250 6 16 32 82 84214 32 82
TF-300 6 16 35 89 88224 35 89
TF-350 8 21 40102 91 232 4010 2
TF-380 8 21 40102 102259 4010 2
U-Tube,
Opposite 45°
Tube en U
opposé à 45°
A
C
D
B
Model/Modéle A B C D
TF-120 8 21 54138 60 153 22 56
TF-160 8 21 60153 66 168 22 56
TF-200 10 26 64163 74 18 8 22 56
TF-250 10 26 70178 78 19 9 22 56
TF-300 12 31 74 188 84 214 22 56
TF-350 12 31 76 194 85 216 22 56
TF-380 12 31 76 194 85 216 22 56
U-Tube,
Standard
Tube en U
droit
A
CD
B
Model/Modéle A B C D
TF-120 6 16 35 89 63161 30 77
TF-160 6 16 38 97 69176 37 94
TF-200 6 16 40102 76 194 39 10 0
TF-250 6 16 46117 79 201 43 110
TF-300 6 16 50127 84 214 4712 0
TF-350 8 21 54138 87221 51 13 0
TF-380 8 21 54138 102259 5113 0
45° Tilt
Reflector
Réflecteur
incliné à 45°
A
C
D
B
Model/Modéle A B C D
TF-120 8 21 8 21 60153 54 13 8
TF-160 8 21 8 21 66168 60 15 3
TF-200 10 26 8 21 74 188 64 16 3
TF-250 10 26 8 21 78 199 69 176
TF-300 12 31 8 21 84 214 74 188
TF-350 12 31 8 21 85 216 79 201
TF-380 12 31 10 26 85 216 79 201
Model/Modéle A E F
TF-120 14 36 18 46 18 46
TF-160 20 51 24 61 18 46
TF-200 20 51 24 61 18 46
TF-250 20 51 24 61 18 46
TF-300 20 51 30 77 18 46
TF-350 20 51 30 77 18 46
TF-380 20 51 30 77 18 46
Level
Reflector*
Réflecteur
droit*
A
C
BD
Model/Modéle A B C D
TF-120 6 16 35 89 63161 35 89
TF-160 6 16 38 97 66168 38 97
TF-200 6 16 40102 71 181 40 10 2
TF-250 6 16 46117 77 19 6 46 117
TF-300 6 16 50127 80204 50 12 7
TF-350 8 21 52133 82209 52 13 3
TF-380 8 21 52133 96244 52 13 3
Model/Modéle A B C D
TF-120 6 16 39100 33 84 39 100
TF-160 6 16 40102 38 97 40 102
TF-200 6 16 50127 44 112 50 127
TF-250 6 16 54138 48 122 54 138
TF-300 6 16 55140 50 127 55 140
TF-350
-UNAPPROVED-
TF-380
-UNAPPROVED-
Lower Shield**
Écran
protecteur
inférieur**
A
C
BD
U-Tube,Full 45°
Tube en U
à plein 45°
D
B
A
C
Model/Modéle A B C D
TF-120 8 21 8 21 60153 42 10 7
TF-160 8 21 8 21 66168 46 11 7
TF-200 8 21 8 21 74 188 5213 3
TF-250 8 21 8 21 78199 61 15 5
TF-300 8 21 8 21 84214 66 168
TF-350 8 21 8 21 85216 70 178
TF-380 8 21 8 21 85216 70 178
Printed in U.S.A/Imprimé aux Etats-Unis P/N 91013407 Rev D
Venting/Ventilation
Infrared Tubes/
TubesRadian
Vent Pipes/
Tubede
Ventilation
Non Ventilé/
Unvented
Vented/
Ventilé
AE
F
NOTES:1. Black numerals are in inches. Orange numerals are in centimeters.
2.All dimensions are from the surfaces of all tubes, couplings, tees, elbows and crosses.
3. Clearances B, C and D can be reduced by 50% after 25’(7.5 m) of tubing downstream
from where the burner and the burner tube connect.
*Protective and deco grille clearances are the same as standard reflector.
**When installed in the first 10’ (3m) on each side of the burner.
NOTES:1. Les chiffres noirs sont des les pouces. Les chiffres d’orange sont des les centimètres.
2. Toutes les dimensions sont mesurées de la surface de tous les tubes, couplages, pièces
en t, coudes et croix.
3. Les côtes de dégagement B, C et D peuvent être réduites de 50% pour tout emplacement
se situant 25 pi ou plus en aval du brûleur.
*Le dégagement des grilles sécuritaires et grilles des décoratives sont les mêmes que celles
du réflecteur standard.
**Quand installé dans les 10' (3m) premiers.
Risque d’incendie
Tenir tous les objets, liquides et vapeurs inflammables à la
distance minimale de sécurité requise du radiateur. Certains
objets placés près du radiateur peuvent s’enflammer ou
exploser.Le non-respect de ces consignes peut causer mort,
blessures ou dommage matériel.
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.
Clearances To Combustibles/Espacemant avec les matériaux combustibles
WARNING ATTENTION
One Side
Reflector
Réflecteur
à un côté
A
C
BD
Model/Modéle A B C D
TF-120 616 9 23 63 161 47 12 0
TF-160 616 9 23 70 178 54 13 8
TF-200 616 9 23 77 196 59 15 0
TF-250 616 9 23 83 211 6516 6
TF-300 616 9 23 86 219 69 176
TF-350 821 9 23 88 224 73186
TF-380 821 18 46 102259 73 186
Two Sid e
Reflectors
Réflecteur
à deux côtés
A
C
BD
Model/Modéle A B C D
TF-120 616 23 59 66 168 23 59
TF-160 616 25 64 72 183 25 64
TF-200 616 27 69 78 199 27 69
TF-250 616 32 82 84 214 32 82
TF-300 616 35 89 88 224 35 89
TF-350 821 4010 2 91232 4010 2
TF-380 821 4010 2 102259 40102
U-Tube,
Opposite 45°
Tube en U
opposé à 45°
A
C
D
B
Model/Modéle A B C D
TF-120 8 21 54138 60153 22 56
TF-160 8 21 60153 66168 22 56
TF-200 10 26 64163 74 188 22 56
TF-250 10 26 70178 78199 22 56
TF-300 12 31 74188 84 214 22 56
TF-350 12 31 76194 85216 22 56
TF-380 12 31 76194 85216 22 56
U-Tube,
Standard
Tube en U
droit
A
CD
B
Model/Modéle A B C D
TF-120 616 35 89 63 161 30 77
TF-160 616 38 97 69 176 37 94
TF-200 616 40 102 76194 39 10 0
TF-250 616 46 117 79201 43 110
TF-300 616 5012 7 84214 47120
TF-350 821 5413 8 87221 51130
TF-380 821 5413 8 102259 51130
45°Tilt
Reflector
Réflecteur
incliné à 45°
A
C
D
B
Model/Modéle A B C D
TF-120 8 21 8 21 60153 54 138
TF-160 8 21 8 21 66168 60 153
TF-200 10 26 8 21 74 188 64163
TF-250 10 26 8 21 78199 69 176
TF-300 12 31 8 21 84214 74 188
TF-350 12 31 8 21 85216 79201
TF-380 12 31 10 26 85216 79201
Model/Modéle A E F
TF-120 14 36 18 46 18 46
TF-160 20 51 24 61 18 46
TF-200 20 51 24 61 18 46
TF-250 20 51 24 61 18 46
TF-300 20 51 30 77 18 46
TF-350 20 51 30 77 18 46
TF-380 20 51 30 77 18 46
Level
Reflector*
Réflecteur
droit*
A
C
BD
Model/Modéle A B C D
TF-120 616 35 89 63 161 35 89
TF-160 616 38 97 66 168 38 97
TF-200 616 40 102 71181 40 102
TF-250 616 46 117 77196 46 11 7
TF-300 616 5012 7 80204 50127
TF-350 821 5213 3 82209 52133
TF-380 821 5213 3 96244 52133
Model/Modéle A B C D
TF-120 616 39 100 33 84 39100
TF-160 616 40 102 38 97 40102
TF-200 616 5012 7 44112 50 12 7
TF-250 616 5413 8 48122 54 138
TF-300 616 5514 0 50127 55 140
TF-350
-UNAPPROVED-
TF-380
-UNAPPROVED-
LowerShield**
Écran
protecteur
inférieur**
A
C
BD
U-Tube,Full45°
Tube en U
à plein 45°
D
B
A
C
Model/Modéle A B C D
TF-120 821 8 21 60 153 42 10 7
TF-160 821 8 21 66 168 46 11 7
TF-200 821 8 21 74 188 52 13 3
TF-250 821 8 21 78 199 61 15 5
TF-300 821 8 21 84 214 66 168
TF-350 821 8 21 85 216 70 178
TF-380 821 8 21 85 216 70 178
Printedin U.S.A/Imprimé aux Etats-Unis P/N 91013407 Rev D
Venting/Ventilation
InfraredTubes/
TubesRadian
VentPipes/
Tubede
Ventilation
NonVentilé/
Unvented
Vented/
Ventilé
AE
F
NOTES:1.Black numeralsare in inches. Orange numerals are in centimeters.
2. All dimensions are from the surfaces of all tubes, couplings,tees, elbows and crosses.
3. Clearances B, C and D can be reduced by 50% after 25’(7.5 m) of tubing downstream
fromwhere the burner and the burner tube connect.
*Protectiveand deco grille clearances are the same as standard reflector.
**Wheninstalled in the first 10’ (3m) on each side of the burner.
NOTES:1. Les chiffres noirs sont des les pouces. Les chiffres d’orange sont des les centimètres.
2. Toutes les dimensions sont mesurées de la surface de tous les tubes, couplages, pièces
en t, coudes et croix.
3. Les côtes de dégagement B, C et D peuvent être réduites de 50% pour tout emplacement
se situant 25 pi ou plus en aval du brûleur.
*Le dégagement des grilles sécuritaires et grilles des décoratives sont les mêmes que celles
du réflecteur standard.
**Quand installé dans les 10' (3m) premiers.
Risque d’incendie
Tenirtous les objets, liquides et vapeurs inflammables à la
distance minimale de sécurité requisedu radiateur. Certains
objets placés près du radiateurpeuvent s’enflammer ou
exploser.Le non-respect de ces consignes peut causer mort,
blessures ou dommage matériel.
Fire Hazard
Keep all flammable objects, liquids and vaporsthe minimum
required clearances tocombustibles 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.
Clearances To Combustibles/Espacemant avec les matériaux combustibles
Description Part Number
Clearances to Combustibles Label 91013407
Wiring Label 91013302
Vent Length Label 91039500
2104-090-120-0456
Manufactured
Year
Manufactured
Month
Numerical
Model Number
Burner Maximum
Firing Rate (MBH)
Numerical sequence
of units manufactured for
the month of the given product
Serial numbers are located on both the burner shipping carton and the data plate. Each burner will have a unique 14-digit serial
number used for identification purposes to allow the lookup of various items such as manufacture test records, replacement part
identification, and manufactured date.

TF-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
4
SECTION 2: INSTALLER RESPONSIBILITY
The installer is responsible for the following:
• To install the heater, as well as the gas and elec-
trical supplies, in accordance with applicable
specifications and codes. Roberts-Gordon recom-
mends the installer contact a local building
inspector or Fire Marshal for guidance.
• To use the information given in a layout drawing
and in the manual together with the cited codes
and regulations to perform the installation.
• To install the heater in accordance with the
clearances to combustibles.
• To furnish all needed materials not furnished as
standard equipment.
• To plan location of supports.
• To provide access to burners for servicing on all
sides for burner removal.
• To provide the owner with a copy of this installa-
tion, operation and service manual.
• To never use heater as support for a ladder or
other access equipment and never hang or
suspend anything from heater.
• To ensure there is adequate air circulation around
the heater and to supply air for combustion, venti-
lation and distribution in accordance with local
codes.
• To safely and adequately install heater using
materials with a minimal working load of 75 lbs
(33 kg).
• To ensure the heater is placed in a approved
application.
2.1 Wall Tag
A laminated wall tag is available for the heater as a
permanent reminder of the safety instructions and
the importance of the required clearances to
combustibles. Please contact Roberts-Gordon or
your ROBERTS GORDON® independent distributor
to obtain the wall tag. Affix the tag by peeling off the
backing of the adhesive strips on the rear surface
and position the tag on a wall near the heater (e.g.
thermostat or ROBERTS GORDON® Controller).
A copy of the wall tag (P/N 91037912) is illustrated on
the back cover. For an immediate solution, you may
affix this copy on the wall near the heater.
Know your model number and installed configuration.
Model number and installed configuration are found
on the burner and in the Installation, Operation and
Service Manual. See Page 6 through Page 9. 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
Roberts-Gordon cannot be responsible for ensuring
that all appropriate safety measures are undertaken
prior to installation; this is entirely the responsibility of
the installer. It is essential that the contractor, the
sub-contractor, or the owner identifies the presence
of combustible materials, corrosive chemicals or
halogenated hydrocarbons* anywhere in the
premises.
* Halogenated Hydrocarbons are a family of chemi-
cal compounds characterized by the presence of
halogen elements (fluorine, chlorine, bromine, etc.).
These compounds are frequently used in refriger-
ants, cleaning agents, solvents, etc. If these com-
pounds 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 com-
pounds 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.
CAUTION
Product Damage Hazard
Do not use heater in area containing
corrosive chemicals.
Refer to appropriate Material Safety Data
Sheets (MSDS).
Failure to follow these instructions can result
in product damage.

SECTION 3: CLEARANCES TO COMBUSTIBLES
5
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 6 through Page 9
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 appli-
ance.
• The stated clearances to combustibles represent
a surface temperature of 90° F (32° C) above
room temperature. Building materials with a low
heat tolerance (such as plastics, vinyl siding, can-
vas, triply, etc.) may be subject to degradation at
lower temperatures. It is the installer’s responsibil-
ity 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.
• 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 com-
bustibles. Signs must be posted adjacent to the
heater thermostat. In the absence of a thermo-
stat, signs must be posted in a conspicuous
location.
• Consult local Fire Marshal, Fire Insurance Carrier
or other authorities for approval of proposed
installation when there is a possibility of exposure
to combustible airborne materials or vapors.
• Hang heater in accordance to the minimum sus-
pension requirements on Page 20, Figure 16.
• 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.
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.

TF-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
6
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: LEVEL REFLECTOR
(inches) (centimeters)
Model ABCDABCD
TF-120 6 35 63 35 16 89 161 89
TF-160 6 38 66 38 16 97 168 97
TF-200 6 40 71 40 16 102 181 102
TF-250 6 46 77 46 16 117 196 117
TF-300 6 50 80 50 16 127 204 127
TF-350 8 52 82 52 21 133 209 133
TF-380 8 52 82 52 21 133 244 133
FIGURE 5: ONE SIDE REFLECTOR
(inches) (centimeters)
Model ABCDABCD
TF-120 6 9 63 47 16 23 161 120
TF-160 6 9 70 54 16 23 178 138
TF-200 6 9 77 59 16 23 196 150
TF-250 6 9 83 65 16 23 211 166
TF-300 6 9 86 69 16 23 219 176
TF-350 8 9 88 73 21 23 224 186
TF-380 8 18 102 73 21 46 260 186
A
C
D
B
FIGURE 6: TWO SIDE REFLECTORS
(inches) (centimeters)
Model ABCDABCD
TF-120 6 23 66 23 16 59 168 59
TF-160 6 25 72 25 16 64 183 64
TF-200 6 27 78 27 16 69 199 69
TF-250 6 32 84 32 16 82 214 82
TF-300 6 35 88 35 16 89 224 89
TF-350 8 40 91 40 21 102 232 102
TF-380 8 40 102 40 21 102 260 102
A
C
D
B