Brant Radiant Heaters LS3 Series User manual

LIOLS3_7/15
Brant Radiant Heaters, Ltd.
LS3 Series
Gas-Fired Infrared Tube Heater
!
WARNING
For Your Safety
If you smell gas:
• Open windows.
• Do not touch electrical switches.
• Extinguish any open flame.
• Immediately call your gas supplier from a
neighbours phone.
• Do not try to light any appliances.
This heater must be installed and serviced by trained gas installation and service personnel only.
Failure to comply could result in personal injury, asphyxiation, death, fire or property damage.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance. In locations used for the storage of combustible materials, signs must be posted
to specify the maximum permissible stacking height to maintain the required clearances from the
heater to the combustibles. Signs must either be posted adjacent to the heater thermostats or in
the absence of such thermostats, in a conspicuous location.
Do not use this heater in indoor living or sleeping quarters, etc.! Installation of a tube heater
system in residential indoor living spaces may result in property damage, serious injury,
asphyxiation or death.
Consignes De Sécurité
Si vous sentez une odeur de gaz:
• Ouvrez les fenêtres.
• Ne touches pas aux interrupters électriques.
• Éteignez toute flamme nue.
• Contactez immediatement votre compagnie de gaz.
WARNING: Improper installation, adjustment, alteration, service or maintenance
can cause property damage, injury or death. Read the installation, operating and
maintence instructions thoroughly before installing or servicing this equipment.
AVERTISSEMENT. Une installation, un réglage, une modification, une réparation ou
un entretien incorrect peut entraîner des dommages matériel, des blessures ou la
mort. lisez attentivement les instructions d’installation, de fonctionnement et
d’entretien avant de procéder à l’installation ou à l’entretien de cet équipement.
INSTALLER: Present this manual to the end user. Keep these instructions in a clean and dry place for future reference.
Model#: Serial #:
(located on rating label)
Ce dispositif de chauffage doit être installé et entretenu par installation à gaz formés et seul le personnel de
service. Le non-respect de ces instructions peut entraîner des blessures corporelles, d’asphyxie, de décès,
d’incendie ou de dommages matériels.
Ne pas stocker ni utiliser de l’essence ou d’autres vapeurs inflammables et liquides dans le voisinage de ce
ou de tout autre appareil. Dans lieux utilisés pour le stockage de matériaux combustibles, les affiches doivent
être posées pour spécifier la hauteur d’empilage maximale admissible à maintenir les autorisations
nécessaires de l’appareil de chauffage aux combustibles. Les panneaux doivent être soit posté adjacent à la
thermostats du réchauffeur ou en l’absence de telles les thermostats, en un endroit bien en vue.
Ne pas utiliser cet élément chauffant en indoor vivant ou lieux de couchage, etc.! Installation d’un système de
chauffage tube dans des espaces de vie à l’intérieur d’une résidence peut entraîner des dommages matériels
et des blessures graves, l’asphyxie ou la mort.
!
WARNING

3
LS3 Series
Contents
1.0 Introduction......................................................................4
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Heater Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Specifications....................................................................... 5
Safety Signs and Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.0 Safety ...........................................................................8
Warning Symbols.................................................................... 8
Applications........................................................................ 8
Standards, Certifications and Government Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Clearance to Combustibles............................................................11
3.0 Installation ......................................................................13
Design Considerations and Prechecks.................................................. 14
Recommended Mounting Heights and Coverages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Hanger Placement and Suspension ................................................... 16
Radiant Tube Assembly.............................................................. 20
Optional Elbow or U-Bend Accessory Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Burner Control Box Suspension ....................................................... 23
Reflector Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Final Heater Assembly............................................................... 26
Venting........................................................................... 27
Optional Unvented Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Combustion Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Separated Combustion Systems....................................................... 36
Combustion Air Supply - Room Air..................................................... 37
Gas Supply Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Electrical Requirements and Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Typical Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Thermostat Connection..............................................................44
Unit Start-up (Commissioning) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
High Altitude Operation.............................................................. 50
4.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
 Operating Instructions............................................................... 51
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
  Diagnostics ....................................................................... 52
5.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Routine Inspection.................................................................. 58
Heater Components and Parts List..................................................... 60
Limited Warranty ................................................................... 62
Kit Contents.......................................................................64

1.0 Introduction
4
LS3 Series
Overview
The intent of this manual is to provide information regarding safety, design guidelines, installation,
operation and maintenance of the tube heater. You must read and understand the instructions and all
safety warnings before installing the tube heater. This manual is property of the owner, and must stay
with the owner or unit after the installation is complete.
Heater Components
Prior to installation, verify that the heater’s gas type and voltage (as listed on the rating plate) match
that of your application. Also verify that you have received all heater contents included with your tube
heater. Reference the last page for a list of the kit contents for your model heater. Materials not included
in the heater kit contents (e.g., screws, vent material, terminals, etc.) are the responsibility of the
installer. Notify your product representative or Brant Radiant Heaters Ltd. of any discrepancy or missing
kit contents prior to installing unit.
1.0 Introduction • Overview • Heater Components
Tube Hanger
Reflector
Reflector Center Support
10 ft. Primary/
Secondary
Combustion
Chamber(s)
Baffles
Reflector End Cap with Clips
Tube Clamp
Burner Control Box
Type 1 Rubber Hose
Radiant
Tube(s)
Figure 1.1 • Heater Components*
Igniter/
Sensor Box
Chains are not provided in kit.
Optional accessory. P/N: THCS
16 in. Burner Tube
* Not all items illustrated may be provided with your heater.
Refer to kit contents of the last page of the Series Manual.
Tube Hanger

5
LS3 Series
Model Number Gas Type (Select one) Maximum Input (BTU/h) Straight Length U-Tube Length Standard Weight (lbs.) Recommended Mounting Height** Combustion Chamber (Black Coated) Radiant Emitter Tube(s) (Black Coated) Residential Certification^
LS3-10-25 N or LP 25,000 12’-1” N/A 70 lbs. 8’ to 11’ Titan N/A Yes
LS3-10-30 N or LP 30,000 12’-1” N/A 70 lbs. 8’ to 11’ Titan N/A Yes
LS3-15-25 N or LP 25,000 16’-10” N/A 85 lbs. 8’ to 13’ Titan Alum Yes
LS3-15-30 N or LP 30,000 16’-10” N/A 85 lbs. 8 to 13’ Titan Alum Yes
LS3-15-40 N or LP 40,000 16’-10” 13’-0” 85 lbs. 8’ to 13’ Titan Alum Yes
LS3-15-50 N or LP 50,000 16’-10” 13’-0” 85 lbs. 10’ to 15’ Titan Alum No
LS3-20-40 N or LP 40,000 21’-10” N/A 100 lbs. 8’ to 13’ Titan Alum Yes
LS3-20-50 N or LP 50,000 21’-10” N/A 100 lbs. 9’ to 15’ Titan Alum No
LS3-30-50* N or LP 50,000 31’-7” 17’-8” 120 lbs. 9’ to 14’ Titan Alum Yes
Chart 1.1 • LS3 Series Specifications
* Model requires LV3-5EA-SUB optional accessory package when installing in a ‘U’ configuration (P/N: DB-TF1B/TB1B).
** Recommended mounting heights are provided as a guideline. Actual conditions may dictate variations from this
data. Optional protective guard (P/N: PG) is required when mounting below 8-ft.
^ Certified models may be installed in attached residential garages/workshops.
Titan = Black coated titanium stabilized aluminized steel.
Alum = Black coated aluminized treated steel.
Specifications
1.0 Introduction • Product Specifications

WARNING
!
6
LS3 Series
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
1.0 Introduction•Safety Signs and Labels
Safety Signs and Labels
Product safety signs or labels should be replaced by the product user when they no longer are legible.
Contact either your local distributor or the product manufacturer for obtaining replacement signs or labels.
Read and understand all safety information and warnings in this manual before
installation, operation and maintenance of the radiant tube heater system.
SERVICE ACCESS PANEL
CONTROLS & GAS VALVE COMPARTMENT
1. Disconnect gas & electricity.
2. Remove four (4) thumbscrews.
3. Remove top cover.
4. Swing hinged panel downward.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
SERVICE ACCESS PANEL
IGNITER & FLAME SENSE COMPARTMENT
1. Disconnect gas & electricity.
2. Remove cover by lifting top
cover upward and outward.
CAUTION: HOT SURFACE.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
SERVICE ACCESS PANEL
FAN COMPARTMENT
1. Disconnect gas & electricity.
2. Remove top cover ( thumbscrews).
3. Remove tsi () 4 screws.
4. Lift and remove panel.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
Top Panel
F/N: LLTCL006L/C/R
Clearance to Combustibles Label.
Bottom Panel
F/N: LLLOGO1 Logo Label
!
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, injury or death.
LLTCL006L-1M-10/13 (CDS)
Read and understand the installation, operating and
maintenance instructions thoroughly before installing or
servicing this equipment.
Des installation réglage, modification, maintenance
ou entretien inappropriés peuvent causer des
dommages matériels, des blessures ou la mort.
Lire et comprendre les directives d’installation, de
fonctionnement et d’entretien avant d’installer ou
d’entretenir cet équipement.
Ce dispositif de chauffage doit être installé et entretenu par du gaz
formés d'installation et le personnel de service uniquement.
Ce dispositif de chauffage exige une nouvelle air de combustion pour un
fonctionnement sûr et doit satisfaire à toutes les dispositions de la
spécifié de combustion et les exigences de ventilation.
RACCORDEMENT GAZ allocations doit être faite pour le système de se
développer. Flexible de raccordement de gaz de type approuvé est
requis. Le connecteur doit être de type 1 flexible. Consulter le manuel
pour obtenir des instructions supplémentaires.
AVERTISSEMENT : Le connecteur doit être installé dans un "U" de
configuration. Utilisez uniquement le connecteur qui était meublée avec le
chauffage.
This heater must be installed and serviced by tained gas installation and
service personnel only.
Ce chauffage doit être installé et entretenu par devai installation de gaz et
le personnel de service uniquement.
This is NOT an explosion-proof heater. Where there is the possibility of
exposure to flammable vapours or dusts, consult the local fire marshall,
your carrier or authorities for approval of the proposed installation.
VENTING. This heater must be properly connected to a manufacturer’s
approved vent system.
L'aération. Ce chauffage doit être correctement connecté à un fabricant
agréé système d'évent.
WARNING: Operation of this heater, when not connected
to a properly installed and maintained venting system,
can result in carbon monoxide (CO) poisoning and
possible death.
AVERTISSEMENT : L'opération de ce chauffage, lorsqu'il
n'est pas connecté à un correctement installés et
entretenus système d'aération et peut entraîner de
monoxyde de carbone (CO) l'empoisonnement et la mort.
This heater requires FRESH COMBUSTION AIR for safe operation and
must meet all provisions of the specified combustion and ventilation
requirements.
GAS CONNECTION Allowances must be made for the system to expand.
A flexible gas connection of approved type is required. The connector
shall be of Type 1 hose. Consult manual for further instructions.
WARNING: Connector must be installed in a “U” configuration. Use only
the connector that was furnished with the heater.
with 1 side shield
with 2 side shields
0°
45°
0°
0°
20.32
99.06
73.66
22.86
20.32
20.32
20.32
22.86
10.16
25.40
10.16
10.16
91.44
91.44
91.44
91.44
LS3 (10,15) - 25
LS3 (10,15) - 30
25,000 & 30,000 BTU/h MODELS
!
CLEARANCE TO COMBUSTIBLES (IN CM)
FIRE HAZARD. Always maintain published clearance to combustibles. In locations used
for the storage of combustible materials, signs must be posted. Consult manual for
additional guidelines.
DANGER
SIDE SIDE
TOP
BELOW
0° MOUNTING ANGLE
FRONT BEHIND
BELOW
45° MOUNTING ANGLE
TOP
BELOW
BEHINDFRONT
0° W/1 SIDE SHIELD
TOP
SIDE SIDE
BELOW
0° W/2 SIDE SHIELDS
TOP
IMPORTANT:
Use high BTU output when determining clearances. The minimum end clearance for all models
is 30.8 centimeters. Maximum mounting angle is 45°.
*The minimum top clearance for an uncovered U-bend or elbows is 45.72 centimeters. A U-bend or elbow less
than 25.40 centimeters from the burner must have a reflector hood. Keep burner and reflector assembly clean
and free of debris.
LLTCL006C-11/13
with 1 side shield
with 2 side shields
0°
45°
0°
0°
38.10
147.32
106.68
50.80
38.10
20.32
20.32
50.80
15.24
25.40
15.24
15.24
114.30
114.30
114.30
114.30
LS3/LD3 (15,20) - 40
MODEL NUMBER
(LENGTH) - MBH FRONT
SIDE
BEHIND TOP* BELOW
MOUNTING
ANGLE
with 1 side shield
with 2 side shields
20 ft. from burner
0°
45°
0°
0°
0°
27.94
99.06
73.66
40.64
17.78
27.94
20.32
20.32
40.64
17.78
15.24
25.40
15.24
15.24
15.24
121.92
121.92
121.92
121.92
76.20
40,000 BTU/h MODELS
Keep cover in place. Remove for service only.
Maintenir le couvercle en place. Déposer pour l'entretien uniquement.
LS3/LD3 (15,20,30) - 50
50,000 BTU/h MODELS
ENDEND
RISQUE D’INCENDIE. Toujours respecter les dégagements prescrits de tout matériau
combustible. Dans les endroits servant au stockage de matériaux combustibles, des
écriteaux doivent en avertir. Se référer au manuel pour des directives supplémentaires.
IMPORTANT : utiliser la haute puissance BTU lors de la détermination des autorisations. Le minimum fin jeu
pour tous les modèles est de 30,8 centimètres. Angle de montage maximum est de 45°.
Le minimum dégagement supérieur pour un découvert U-plier ou coudes est 45,72 centimètres. Une U-plier
ou coude moins de 25,40 centimètres dans le brûleur doit avoir un réflecteur le capot. Garder brûleur et
assemblage réflecteur propre et exempt de débris.
SAFETY INSTRUCTIONS
This appliance must be installed in accordance with the manufacturer’s
instructions and local codes. In the absence of local codes, follow the
National Fuel Gas Code, ANSI Z223.1 or the CAN/CGA B149 Installation
codes.
LLTCL006R-1M-10/13 (CDS)
!
CAUTION
Cet appareil doit être installé conformément aux instructions du fabricant et aux codes
locaux. En l'absence de codes locaux, suivez la Nationale du gaz combustible Code, ANSI
Z223.1 ou le CAN/CGA B149 codes d'installation.
Ce chauffage doit être installé à un minimum de 8 pieds au-dessus du sol/sol. Il peut être équipé
d'un dispositif de protection (p/n : PG) de faible montage ou gardé les applications.
APPLICATION. Si cet appareil est installé dans un ou plusieurs des emplacements suivants, puis
l'installation doit être conforme à la dernière édition de la norme.
ATTENTION : En raison de températures de surface élevées, garder les enfants, les vêtements
et les matériaux combustibles. Ne pas stocker les éléments combustibles en dessous de l'unité.
Toujours maintenir le publié jeux de combustibles.
Hangars d'aéronefs. ANSI/NFPA 409. Structures de stationnement. ANSI/NFPA 88A Les
garages. ANSI/NFPA 30A.
A. This appliance does not have a pilot. It is equipped with an ignition
device which automatically lights the burner. DO NOT attempt to light
burner by hand.
B. Before operating, smell all around the appliance area for gas. Be sure
to smell next to the floor because some gases are heavier than air and
will settle to the floor.
What to do if you smell gas:• Do not try to light any appliance.• Do not
touch any electrical switch.• Do not use any phone in the building.•
Immediately call your gas supplier from a neighbour’s phone. Follow gas
supplier’s instructions.
C. Use only your hand to turn the manual shut-off knob. Never use tools.
If the knob will not turn by hand, don’t try to repair it; call a certified gas
technician. Force or attempted repair may result in fire or explosion.
D. Do not use this appliance if any part has been under water. Immedi-
ately call a qualified service technician to inspect the appliance and
replace any part of the control system or gas control which has been
under water.
A. Cet appareil ne dispose pas d'un pilote. Il est équipé d'un dispositif d'allumage qui
s'allume automatiquement le brûleur. Ne tentez pas de lumière brûleur à la main.
B. Avant le fonctionnement, odeur tout autour de l'appareil zone pour le gaz.
Assurez-vous d'odeur prochaine de la parole, parce que certains gaz sont plus lourdes
que l'air et se régler sur le plancher.
Que faire si vous avez une odeur de gaz : • ne pas essayer de mettre en lumière un
quelconque appareil. • Ne touchez aucun commutateur électrique. • Ne pas utiliser
n'importe quel téléphone dans le bâtiment. • Appeler immédiatement votre fournisseur de
gaz d'un voisin du téléphone. Gaz Suivez les instructions du fournisseur.
D. ne pas utiliser cet appareil si aucune pièce n'a été sous l'eau. Appelez immédiatement
un technicien de maintenance qualifié pour inspecter l'appareil et remplacer toute partie
du système de contrôle ou de commande du gaz qui a été sous l'eau.
This heater must be installed at a minimum of 8 ft. above the floor/ground
level. It may be equipped with a protective guard (p/n: PG) for low
mounting or guarded applications.
APPLICATION. If this applicance is installed in one or more of the
following locations, then the installation must be in accordance with the
latest edition of the Standard.
Aircraft Hangers. ANSI/NFPA 409 Parking Structures ANSI/NFPA 88A
Repair Garages ANSI/NFPA 30A
CAUTION: Due to high surface temperatures, keep children, clothing
and combustible items below the unit. Always maintain the published
clearances to combustibles.
3
F/N: LLAC023
Combustion Air
Connector Label
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
F/N: LLV3EP1
F/N: LLV3EP6
Back Panel
Do not Rotate/ Gas hose label

7
LS3 Series 1.0 Introduction•Safety Signs and Labels
SERVICE ACCESS PANEL
IGNITER & FLAME SENSE COMPARTMENT
1. Disconnect gas & electricity.
2. Remove cover by lifting top
cover upward and outward.
CAUTION: HOT SURFACE.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI 48089
[phone] www.reverberray.com
LOW-INTENSITY INFRARED HEATER
MAX. HEAT INPUT
MAX. DEBIT CALORIFIQUE
MIN. HEAT INPUT
MIN. DEBIT CALORIFIQUE
VENT CATEGORY
ÉVENT CATÉGORIE
BTU/h
BTU/h
VOLTAGE
AMPS
PHASE
FREQUENCY
Hz
VAC
MANIFOLD PRESSURE
PRESSION A LA TUBULURE D'ALIMENTATION
MAXIMUM INLET PRESSURE
PRESSION D'ALIMENTATION MAXIMALE
MINIMUM INLET PRESSURE FOR PURPOSE OF ADJ.
PRESSION D'ALIMENTATION EN GAS MIN. ADMISE
INCHES W.C.
INCHES W.C.
INCHES W.C.
RADIATEUR À INFRAROUGE À FAIBLE INTENSITÉ
ORIFICE SIZE
DIM DE L'INJECTEUR
NATURAL GAS PROPANE GAS
THIS DESIGN COMPLIES WITH STANDARD(S):
COMPLES DE CETTE CONCEPTION AVEC LA NORME:
HEATER BUILD TYPE
TYPE OF GAS
TYPE DE GAZ
MIN. MOUNTING ANGLE
MIN. ANGLE DE SUPPORT
MAX. MOUNTING ANGLE
MAX. ANGLE DE SUPPORT
MODEL NUMBER
NUMÉRO DE MODÈLE
SERIAL NUMBER
NUMÉRO DE SÉRIE
VERSION
COMBUSTION CHAMBER
®
FOR COMMERCIAL / INDUSTRIAL USE.
FOR INDOOR USE ONLY.
MADE IN U.S.A.
40,000
40,000
CATEGORY III
2.4
SINGLE
60
1203.5
14.0
5.0
49
D.M.S.
57
D.M.S.
ANSI Z83.20b-2011 • CSA2.34B-2011 RADIANT TUBE HEATER
C1
NATURAL
AGA 7-89 RESIDENTIAL RADIANT TUBE HEATER
0°
45°
LS3-20-40N YYMMREPCSHIPPE#### 09/12
TP-26B; INCH BC ALUMINIZED
Controls Compartment
Fan
Compartment
Al-Ti Combustion
Chamber
16” Burner Tube
Rating Plate
Aluminized
Radiant Tube(s)
(if applicable)
F/N: LLTCL015 Lighting Instructions
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI 48089
[phone] www.reverberray.com
LOW-INTENSITY INFRARED HEATER
MAX. HEAT INPUT
MAX. DEBIT CALORIFIQUE
MIN. HEAT INPUT
MIN. DEBIT CALORIFIQUE
VENT CATEGORY
ÉVENT CATÉGORIE
BTU/h
BTU/h
VOLTAGE
AMPS
PHASE
FREQUENCY
Hz
VAC
MANIFOLD PRESSURE
PRESSION A LA TUBULURE D'ALIMENTATION
MAXIMUM INLET PRESSURE
PRESSION D'ALIMENTATION MAXIMALE
MINIMUM INLET PRESSURE FOR PURPOSE OF ADJ.
PRESSION D'ALIMENTATION EN GAS MIN. ADMISE
INCHES W.C.
INCHES W.C.
INCHES W.C.
RADIATEUR À INFRAROUGE À FAIBLE INTENSITÉ
ORIFICE SIZE
DIM DE L'INJECTEUR
NATURAL GAS PROPANE GAS
THIS DESIGN COMPLIES WITH STANDARD(S):
COMPLES DE CETTE CONCEPTION AVEC LA NORME:
HEATER BUILD TYPE
TYPE OF GAS
TYPE DE GAZ
MIN. MOUNTING ANGLE
MIN. ANGLE DE SUPPORT
MAX. MOUNTING ANGLE
MAX. ANGLE DE SUPPORT
MODEL NUMBER
NUMÉRO DE MODÈLE
SERIAL NUMBER
NUMÉRO DE SÉRIE
VERSION
COMBUSTION CHAMBER
®
FOR COMMERCIAL / INDUSTRIAL USE.
FOR INDOOR USE ONLY.
MADE IN U.S.A.
40,000
40,000
CATEGORY III
2.4
SINGLE
60
1203.5
14.0
5.0
49 D.M.S. 57 D.M.S.
ANSI Z83.20b-2011 • CSA2.34B-2011 RADIANT TUBE HEATER
C1
NATURAL
AGA 7-89 RESIDENTIAL RADIANT TUBE HEATER
0°
45°
LS3-20-40N YYMMREPCSHIPPE#### 09/12
TP-26B; INCH BC ALUMINIZED
SAMPLE
F/N: LLTB025R
F/N: LLTB024L
F/N: LLTB026
OPERATING INSTRUCTIONS
4. Open access panel.
5. Turn the gas valve switch to the “OFF” position.
6. Close and secure the access panel.
ON
OFF
Gas Inlet
Gas Control Switch Shown in “OFF” Position
TURN OFF GAS TO APPLIANCE
1. STOP! Read the safety information in manual.
2. Set the thermostat to the lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition
device which automatically lights the burner.
Do not try to light the burner by hand.
5. Open the access panel.
6. Move the gas control switch to the “OFF” position.
7. Wait five (5) minutes to clear out any gas. If you
still smell gas STOP! Follow “B” in the safety information above
on caution label. If you do not smell gas, proceed to the next step.
8. Move the gas control switch to the “ON” position.
9. Close and secure control access panel.
1. Set the thermostat to the lowest setting.
2. Turn manual shut-off valve located outside of
the unit to the closed position.
3. Turn off all electrical power to the appliance
if service is to be performed.
5. Ouvrez le panneau d'accès.
6. Déplacer le gaz l'interrupteur sur la position “OFF ”.
7. Attendre (5) cinq minutes pour effacer tout gaz. Si vous sentez
encore gaz STOP ! Suivre “ B ” dans les informations de sécurité
ci-dessus sur l'étiquette d'avertissement. Si vous ne sentez pas de
gaz, passez à l'étape suivante.
8. Déplacez le contrôle gaz interrupteur sur la position “ ON ”.
9. Fermer et sécuriser le panneau d'accès.
10. Turn on all electric power to the appliance.
11. Set thermostat to desired setting.
12. If the appliance will not operate, follow the instructions
“TO TURN OFF GAS TO THE APPLIANCE” and call
your service technician or gas supplier.
10. Tourner sur l'alimentation électrique de l'appareil.
11. Set thermostat au réglage désiré.
12. Si l'appareil ne fonctionne pas, suivez les instructions
“ Pour TURN OFF gaz à l'appareil ” et appelez votre fournisseur de gaz
ou de technicien de service.
1. Réglez le thermostat à réglage le plus bas.
2. Tourner le robinet d'arrêt manuel situé à l'extérieur
de l'appareil à la position fermée.
3. Coupez l'alimentation électrique de l'appareil si le service doit
s'exécuter.
4. Panneau d'accès ouvert.
5. Tournez le commutateur de robinet de gaz à la position “OFF”.
6. Fermer et verrouiller le panneau d'accès.
1. STOP ! Lisez les informations de sécurité dans le manuel d'utilisation.
2. Réglez le thermostat sur le réglage le plus bas.
3. Désactiver toute l'énergie électrique de l'appareil.
4. Cet appareil est équipé d'un dispositif d'allumage lequel allume
automatiquement le brûleur. N'essayez pas d'allumer le brûleur à la main.
Yellow Titanium Alloy Tube
for combustion tube

8
LS3 Series
Warning Symbols
Safety is the most important consideration during installation, operation and maintenance of the tube
heater. You will see the following symbols and signal words when there is a hazard related to safety or
property damage.
2.0 Safety • Warning Symbols • Applications
2.0 Safety
Warning indicates a potentially hazardous situation
which, if not avoided, could result in death or injury.
Caution indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury.
Notice indicates a potentially hazardous situation
which, if not avoided, could result in property
damage.
NOTICE
WARNING
!
CAUTION
!
WARNING
!
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, serious injury or death. Read and understand, the installation,
operating and maintenance instructions thoroughly before installing or servicing this
equipment. Only trained, qualified gas installation and service personnel may install or
service this equipment.
Applications
This is not an explosion proof heater. No tube heater may be used in a Class 1 or Class 2 Explosive
environment. Consult your local Fire Marshall, insurance carrier and other authorities for approval if the
proposed installation is in question.
Commercial / Industrial Applications
Unless otherwise indicated, tube heaters are designed and certified for use in industrial and commercial
buildings, such as warehouses, manufacturing plants, aircraft hangars and vehicle maintenance shops.
For maximum safety the building must be evaluated for potential problems before installing the heating
system. A critical safety factor to consider before installation is the clearance to combustibles.
Residential Applications
Only select LS3 Series models are Design Certified under CSA Requirements for residential radiant tube
heaters (No. 7-89). Not for use in the residential indoor living areas or sleeping quarters.
Read and understand all safety information and warnings in this manual prior to installation, operation,
and maintenance of this heater. Warnings indicate a potentially hazardous situation which, if not avoided,
could result in injury or death.

Standards, Certifications and Government Regulations
Installation of this tube heater must conform with all applicable local, state and national specifications,
regulations and building codes. Contact the local building inspector and/or fire Marshall for guidance.
In the absence of local codes, the installation must conform to the latest edition of:
United States: National Fuel Gas Code, ANSI Z223.1 (NFPA 54).
Canada: CAN/CGA B149.1 and .2, Canadian Electrical Code C22.1
Copies of the Standards can be viewed or purchased at www.nfpa.org or www.scc.ca.
Public Garages:
This heater must be installed in accordance with the latest edition of the Standard for Parking
Structures, ANSI/NFPA 88A or the Code for Motor Fuel Dispensing Facilities and Repair Garages ANSI/
NFPA 30A. In Canada, refer to CAN/CGA B149.1 and B149.2.
• Heaters must not be installed less than 8 ft. (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.
Aircraft Hangars:
This heater must be installed in accordance with the latest edition of the Standard for Aircraft Hangars,
ANSI/NFPA 409. In Canada, refer to CAN/CGA B149.1 and B149.2.
• In aircraft storage and servicing areas, heaters shall be installed at least 10 ft. from above the upper
surface of wings or of the engine enclosures of the highest aircraft that 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 areas adjoining the aircraft storage area (e.g., shops, offices) the bottom of heaters shall be
installed no less than 8 ft. (2.4 m) above the floor.
• Suspended or elevated heaters shall be located in spaces where they shall not be subject to damage
by aircraft, cranes, movable scaffolding or other objects.
Provisions shall be made to assure accessibility to suspended tube heaters for recurrent maintenance
purposes.
9
LS3 Series 2.0 Safety • Standards, Certifications and Regulations
Not For Use in Indoor Living Spaces. Installing this unit in residential indoor living spaces or sleeping
quarters, such as bedrooms or basements, may result in property damage, serious injury or death.
WARNING
!

10
LS3 Series
Applicable authorities governing the manufacturing or installation of this infrared heater include
(but are not limited to) the following organizations:
The tube heater must be electrically grounded in accordance with the following codes:
United States: Refer to National Electrical Code®, ANSI/NFPA 70 (latest edition).
Wiring must conform to the latest edition of National Electrical
Code®, local ordinances, and any special diagrams furnished.
Canada: Refer to Canadian Electrical Code CSA C22.1 Part 1 (latest edition).
Venting must be installed in accordance with the requirements within this manual and the
following codes:
United States: Refer to NFPA 54/ANSI Z223.1 (latest edition), National Fuel
Gas Code.
Canada: Refer to CAN/CGA B149.1 Installation Codes for Gas Burning
Appliances.
High
Altitude
Electrical
Venting
Building
Location Guidelines
Chart 2.1 • Standards and Code Installation Guidelines • Building Location
Installation of this tube heater is approved, without modifications, for elevations up to
6,000 feet (1,829 m) MSL (sea level) in the United States. Contact the factory for
installations above these elevations.
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.
Guidelines:
Building
Aspect Codes and Guidelines
Chart 2.2 • Standards and Code Installation Guidelines • Building Aspect
Non-
Standard
BTU Gas Unless otherwise noted on the rating plate, this infrared heater is designed and orificed to
operate on standard BTU gas. Contact the factory if utilizing non-standard BTU gas.
Guidelines:
• IAS - International Approval Services.
• AGA - American Gas Association.
• IRSC- Infrared Heater Safety Council.
• NFPA - National Fire Protection Association.
• ANSI Z83.20b - American National Standards Institute.
• NFPA 54/ANSI Z223.1 - National Fuel Gas Code.
• CSA - Canadian Standards Association.
• OSHA - Occupational Safety & Health Administration.
2.0 Safety • Standards, Certifications and Regulations

Children and adults should be alerted to the hazards of high surface temperatures and should stay away
to avoid burns or clothing ignition.
Young children should be carefully supervised when they are in the same space as the heater.
Clothing or other flammable materials should not be hung from the heater, or placed on or near the heater.
Any guard or other protective device removed for servicing the heater must be replaced prior to operating
the heater.
Installation and repair should be done by a qualified service person. The heater should be inspected
before use and at least annually by a qualified service person. More frequent cleaning may be required
as necessary. It is imperative that the control compartment, air passageways and burner(s) of the heater
be kept clean.
CAUTION
!
11
LS3 Series
Hazards:
For maximum safety the building must be evaluated for hazards before installing the heating system.
Examples include, but are not limited to:
• Gas and electrical lines
• Combustible and explosive materials
• Chemical storage areas
• Areas of high chemical fume concentrations
• Provisions for accessibility to the heater
• Adequate clearances around air openings
• Combustion and ventilating air supply
2.0 Safety • Clearance to Combustibles
Clearance to Combustibles
A critical safety factor to consider before installation is the clearances to combustibles. Clearance to
combustibles is defined as the minimum distance you must have between the tube surface, or reflector,
and the combustible item . Considerations must also be made for moving objects around the tube heater.
The following is a partial list of items to maintain clearances from:
WARNING
!
Placement of explosive objects, flammable objects, liquids and vapors
close to the heater may result in explosion, fire, property damage, serious
injury or death. Do not store or use explosive objects, liquids and vapor in
the vicinity the heater.
WARNING
!
Placement of explosive objects, flammable objects, liquids and vapors
close to the heater may result in explosion, fire, property damage, serious
injury or death. Do not store or use explosive objects, liquids and vapor in
the vicinity the heater.
• Paint
• Parked vehicles
• Gasoline
• Storage racks
Combustible items: Moving Objects:
• Wood • Overhead doors
• Paper • Vehicle lifts
• Fabric • Cranes
• Chemicals • Hoists
When installing the tube heating system, the minimum clearances to combustibles for your Series tube
heater and system configuration must be maintained. These distances are shown in Chart 2.3 and on the
burner control box. If you are unsure of the potential hazards, consult your local fire marshall, fire
insurance carrier or other qualified authorities on the installation of gas fired tube heaters for approval of
the proposed installation.
• Vehicle parking areas
• Vehicles with lifts or cranes
• Storage areas with stacked materials
• Lights
• Sprinkler heads
• Overhead doors and tracks
• Dirty, contaminated environment

Model Number
(Length) - MBH
Mounting
Angle*
Sides
Front Behind Top Below
25,000 & 30,000 BTU/h MODELS
LS3 (10, 15) - 25 [N, P] 0° 8 (20) 8 (20) 4 (10) 36 (91)
LS3 (10, 15) - 30 [N, P] 45° 39 (99) 8 (20) 10 (25) 36 (91)
with 1 side shield 0° 29 (74) 8 (20) 4 (10) 36 (91)
with 2 side shields 0° 9 (23) 9 (23) 4 (10) 36 (91)
40,000 BTU/h MODELS
LS3 (15, 20) - 40 [N, P] 0° 15 (38) 15 (38) 6 (15) 45 (114)
45° 58 (147) 8 (20) 10 (25) 45 (114)
with 1 side shield 0° 42 (107) 8 (20) 6 (15) 45 (114)
with 2 side shields 0° 20 (151) 20 (51) 6 (15) 45 (114)
50,000 BTU/h MODELS
LS3 (15, 20, 30) - 50 [N, P] 0° 11 (28) 11 (28) 6 (15) 48 (122)
45° 39 (99) 8 (20) 10 (25) 48 (122)
with 1 side shield 0° 29 (74) 8 (20) 6 (15) 48 (122)
with 2 side shields 0° 16 (41) 16 (41) 6 (15) 48 (122)
20 ft. from burner 0° 7 (18) 7 (18) 6 (15) 30 (76)
Chart 2.3 • Clearance to Combustibles in Inches (cm) (see Figure 2.1 for Mounting Angles)
* Heaters mounted on an angle between 0° to 45° must maintain clearances posted for 0° or 45°; whichever is
greater. NOTE: Use high BTU output when determining clearances. The minimum end clearance is 12 in.
Figure 2.1 • Mounting Angles
0° Mounting Angle 45° Mounting Angle
0° Mounting Angle
with 1 Side Shield
(P/N: SSE)
0° Mounting Angle
with 2 Side Shields
(P/N: SSE)
Side Side
Below
Top
Front Behind
Below
Top
Front Behind
Below
Top
Side Side
Below
Top
WARNING
!
Failure to comply with the stated clearances to combustibles may result in
in personal injury, property damage and/or death.
12
LS3 Series
2.0 Safety • Clearance to Combustibles
In locations used for the storage of combustible materials, signs must be posted to specify the maximum
permissible stacking height to maintain the required clearances from the heater to the combustibles.
Signs must either be posted adjacent to the heater’s thermostat or in a conspicuous location.
The stated clearance to combustibles represents a surface temperature of 90°F (32°C) above room
temperature. Building materials with a low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply,
etc.) may be subject to degradation at lower temperatures. It is the installer’s responsibility to assure that
adjacent materials are protected from degradation.

13
LS3 Series
WARNING
!
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, serious injury or death.
Read and understand, the installation, operating and maintenance instructions thoroughly
before installing or servicing this equipment.
Only trained, qualified gas installation and service personnel may install or service this
equipment.
Design Considerations and Prechecks
Placement of infrared heaters is influenced by many factors. Aside from safety factors, considerations
such as the number of heater or vent elbows that are allowed, maximum vent lengths, ducting of
combustion air and combining exhaust vents are a few examples. All installation manuals, along with
national, state, provincial and local codes, address these issues. It is critical that you read, understand
and follow all guidelines and instructions.
To ensure a properly designed heating system, a layout should be developed for the correct placement of
the burner control box, tubes, vents and combustion air intake ducts. Inspect and evaluate the mounting
conditions, vent locations, gas supply and wiring.
When designing an infrared radiant heating system, consider the following:
• Has the building’s heat loss been evaluated?
• Does the design meet the needs of the space?
• Have recommended mounting heights been observed?
• Have all clearance to combustible situations been observed?
• Is the supply (burner) end of the heater located where more heat is required?
• Is it best to offset the heaters and/or rotate the reflectors towards the heat zone?
• Are extra guards, side shields, ‘U’ or ‘L’ reflector covers required?
• Does the heater require outside fresh air for combustion?
• Is the environment harsh or contaminated (requiring outside air for combustion)?
• Are chemicals or vapors a concern (requiring outside air for combustion or additional ventilation)?
IMPORTANT: Fire sprinkler heads must be located at an appropriate distance from the heater. This
distance may exceed the published clearance to combustibles as posted on the heater. Certain
applications may require the use of high temperature sprinkler heads or relocation of the heaters.
Sprinkler systems containing propylene glycol or other flammable substances are not to be used in
conjunction with this heater without careful consideration for and avoidance of potential fire or explosion
hazards. For further information consult NFPA 13.
The effective infrared surface temperature of a person or object may be diminished with wind above 5
mph. The use of adequate wind barrier(s) may be required.
3.0 Installation
3.0 Installation • Design Considerations and Prechecks

Design Scenario:
A tube heater system is being installed in a 90’ (L) x 50’ (W) x 14’ (H) space. Two overhead doors are
located at one end and an equipment storage area on one side. The calculated heat load is 400,000 BTU/h.
Figure 3.1 • Poor Design
Figure 3.2 • Good Design
Doors and
tracks
Too Cold Too Hot
Equipment storage
50’
80’ - 200,000 BTU
(2 total)
Doors and
tracks
90’
Doors and
tracks
Doors and
tracks
Equipment storage
Sidewall Vent (2 total)
• Two burners (200,000 BTU each) are placed at one end, opposite the area of highest demand
(e.g., overhead doors).
• Recommended mounting heights are not observed (see Chart 3.1).
• Produces an uneven heat distribution.
• Four burners (100,000 BTU each) are placed in each corner. Burner (hotter) ends direct heat to areas of
highest heat demand.
• Recommended mounting heights have been observed.
• Distributes heat more evenly.
Gas Supply
50’
90’ Gas Supply
40’ - 100,000 BTU
(4 total)
Poor Design
Good Design
When heated, materials high in hydrocarbons (solvents, paint thinner, mineral spirits, formaldehydes, etc.)
can evaporate. This may result in odors or fumes being emitted into the environment. To correct this
problem, clean the area and/or introduce additional ventilation. The heaters themselves, when installed
and serviced in accordance with the installation manual, do not emit foul odors into the environment.
Better Heat Distribution
14
LS3 Series
3.0 Installation • Design Considerations and Prechecks

15
LS3 Series
* Optional protective guard (P/N: PG) is required when mounting below 8-ft.
Factory recommended mounting heights are listed as a guideline. If infrared heaters are mounted to low
or to high, they may result in discomfort or lack of heat. Brant Radiant Heaters Limited generally
recommends observing the recommended mounting heights to optimize comfort conditions. However,
certain applications such as spot heating, freeze protection, outdoor patio heating or very high ceilings
may result in the heaters being mounted outside of the factory recommended mounting heights.
Figure 3.3 • Mounting Height Dimensions • see chart 3.1 for dimensions
Chart 3.1 • Recommended Mounting Heights and Coverages
NOTE: This chart is provided as a guideline. Actual conditions may dictate variation from this data.
3.0 Installation • Recommended Mounting Heights
Note: Dimensions A, B & C are based upon heaters hung at the factory recommended mounting height.
Dim. C
Dim. A
Dim. B
Dim. C
Dim. A
Model Maximum Input (BTU/h) Recommended Mounting Height (ft.)* Coverage Area Straight Config. (LxW) Coverage Area U-Tube Congfig. (LxW) Distance Between Heaters (ft.) Dimension A Distance Between Heater Rows (ft.) Dimension B Maximum Distance Between Heaters and Wall (ft.) Dimension C
10 ft. 25,000 8’ - 11’ 20’ x 12’ N/A 10’ - 20’ 20’ - 40’ 16’
30,000 8’ - 11’ 20’ x 12’ N/A 10’ - 20’ 20’ - 40’ 16’
15 ft. 25,000 8’ - 13’ 20’ - 12’ N/A 10’ - 20’ 20’ - 40’ 16’
30,000 8’ - 13’ 20’ - 12’ N/A 10’ 20’ 20’ - 40’ 16’
40,000 8’ - 13’ 20’ x 12’ N/A 10’ - 20’ 20’ - 40’ 16’
50,000 10’ - 15’ 22’ x 15’ N/A 20’ - 30’ 30’ - 50’ 18’
20 ft. 40,000 8’ - 13’ 20’ x 13’ 12’ x 12’ 10’ - 20’ 20’ - 40’ 16’
50,000 9’ - 15’ 22’ x 15’ 12’ x 12’ 20’ - 30’ 30’ - 50’ 18’
30 ft. 50,000 9’ - 14’ 32’ x 15’ 15’ x 15’ 20’ - 30’ 30’ - 50’ 18’

WARNING
!
16
LS3 Series
Suspension of the heater must conform to applicable codes referenced in the Safety section and
these instructions.
1 Lay all radiant tubing out in the following order. Position tubes in approximate location (see Figure 3.4).
• 10 ft. 4” to 3” O.D. titanium treated combustion chamber.
• 3” O.D. aluminized radiant emitter tube(s) if applicable.
2 Connect the female end of the titanium combustion chamber to the 16” burner tube by
using the 4” stainless steel tube clamp (TP-220).
Important! The 10 ft. tianium alloy treated combustion chamber must be placed as the first tube
downstream of the burner control box. The combustion chamber has a yellow identification label
located on the tube.
3 Place a 4” tube hanger (TP-19B) on the tapered titanium combustion chamber’s 4” O.D. end. The
spacing between the burner control box mounting brackets and the 4” tube hanger should be 2’-4”.
4 Mark locations for hanging points.
NOTE: If the available hanging points do not allow for the recommended spacing then additional
hangers (P/N: TP-19B (4”) or TP-1079(3”)) may be necessary.
• The spacing between the burner control box mounting brackets and the first hanger should be
approximately 2’-4”.
• The space between the first two hangers placed on the first tube, should be approximately 8’-10”.
• The space between hangers thereafter, one per tube, should be approximately 9’-8”.
Hanger Placement and Suspension
Improper suspension of the tube heater may result in collapse and being crushed. Always
suspend from a permanent part of the building structure that can evenly support the total
force and weight of the heater.
Failure to maintain minimum clearance to combustibles may result in fire and/or explosion,
property damage, serious injury or death. Always maintain minimum clearances and post
clearance safety limit signs or the clearance safety tag where needed.
3.0 Installation • Hanger Placement and Suspension

2’ 4”
(71 cm)
16” Burner
Tube
10 ft. 4” to 3” O.D. Tapered or 10 ft. 4” O.D.
Titanium Treated Combustion Chamber
3” O.D. Aluminized
Steel Radiant Emitter
Tube(s) (if applicable)
8’ 10”
(2.6 m)
9’ 8”
(2.9 m) 9’ 8”
(2.9 m)
Burner
Control Box
Burner Control Box
Suspension Points
Suspension
Point
Igniter/
Sensor Box
3” or 4” Tube
Clamp (TP-1077
or TP-21B)
4” Stainless Steel
Tube Clamp (TP-220)
4” Tube Hanger (TP-19B)
3” or 4” Tube Hanger
(TP-1079 or TP-19B)
Suspension
Point
Suspension
Point
17
LS3 Series
Chart 3.2 • Heater Mounting Requirements and Weights
* Refer to page 22 for U-bend configuration dimensions.
Model Dimension* Straight Configuration Suspension Points Control Box Stabilizer Shipping Weight Chain Set Qty. Straight Chain Set Qty. w/TF1B Optional Brass Knuckle (P/N:BK) Optional Single Mount Bracket
10 ft. 12’-1” 2 2 70 lbs. 4 N/A 2 N/A
15 ft. 16’-10” 3 2 85 lbs. 5 N/A 3 N/A
20 ft. 21’-10” 3 2 100 lbs. 5 6 3 2
30 ft. 31’-7” 4 2 120 lbs. 6 7 4 3
3.0 Installation • Hanger Placement and Suspension
Figure 3.4 • Heater Mounting Layout
NOTE: A label identifying the combustion chamber(s) is located on the tube(s).

18
LS3 Series
5 S-Hook and
#1 Double-Loop Chain
5 Prepare mounting surface, if necessary weld blocks, drill holes (see figure 3.3).
NOTE: The burner control box and radiant tubes should be in straight alignment and level.
6 Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.
7 Attach and close S-hook (P/N: S-Hook) and #1 double-loop chain (P/N: THCS) to anchor. Check that
it is securely attached. NOTE: Threaded rod and turnbuckles may be used.
8 Attach hangers to chains. Adjust chain lengths until radiant tubing is level and equal weight distribution
is achieved. Chains must be straight up and down. Do not install chains at an angle as this can result
in tube warpage or separation.
Figure 3.5 • Mounting the Hangers
3 Wood Beam
3 Concrete Beam
4 Beam Clamp
4 Screw Hook
4
Screw hook
with Locknut
and Washer
5 Threaded Rod
and Turnbuckle
6 Threaded Rod
6 Chain
3
I-Beam
4 Beam Clamp
6 Chain 6 Chain
3 I-Beam
3.0 Installation • Hanger Placement and Suspension

19
LS3 Series
For 45 degree hanging angle use two
S-hooks and two #1 double-loop chains.
For variety of hanging angles, use an optional
Brass Knuckle (P/N: BK) fitting with a #1 double-
loop chain and S-hook.
45°
30° 15°
U-Tubes can be mounted at a 15, 30 or 45 degree
angle with two suspension points, using two optional
Brass Knuckle (P/N: BK) fittings, #1 double-loop
chains and S-hooks.
U-Tubes can be mounted from a single suspension
point using an optional Single Mounting Bracket
(P/N: SMB) with five S-hooks and #1 double-loop
chains.
Figure 3.6 • U-Tube Hanger Mounting Options
Figure 3.7 • Angled Hanger Mounting Options
Exhaust
End
Single Mounting
Bracket
Brass Knuckle
3.0 Installation • Hanger Placement and Suspension

20
LS3 Series
Radiant Tube Assembly
To install the radiant tubes:
1 Place tubes in hangers with the welded seam facing downward and the swaged end of the tube
towards the exhaust end of the heater system (see Figure 3.8).
Refer to Chart 3.6 for tube installation sequence.
2 Slide tube clamps onto radiant tubes (see figure 3.9).
Figure 3.8 • Attach Hangers
Figure 3.9 • Attach Tube Clamps
Hanger
Welded seam
faces down
Swaged End
Tube Clamp
Radiant Tube
NOTE: If the tube clamp comes apart, the spacer must be
re-assembled with the spacer’s concave surface facing against
the radiant tube surface.
Concave surface
3.0 Installation • Radiant Tube Assembly