Brant Radiant Heaters DET3 Series User manual

!
WARNING
Pour Votre Sécurité
Si vous sentez le gaz:
• Fenêtres ouvertes.
• Ne touchez pas d’échanges électriques.
• Éteignez n’importe quelle flamme ouverte.
• N’essayez pas d’éclairer d’appareils.
• Appelez immédiatement votre fournisseur de gaz
d’a les voisins téléphonent.
Brant Radiant Heaters, Ltd.
LIODET3-REV-00 08-18
DET3 Series
Gas-Fired Infrared Tube Heater
WARNING: Improper installation, adjustment, alteration, service or
maintenance can cause property damage, injury or death. Read the
installation, operating and maintenance 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)
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.
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.
Not for residential use! Do not use this heater in the home, sleeping quarters, attached
garages, etc. Installation of a commercial tube heater system in residential indoor spaces
may result in property damage, serious injury, asphyxiation or death.
Cet appareil de chauffage doit être installé et entretenu par l’installation à gaz formée et le personnel de
service seulement. L’échec de se soumettre pourrait aboutir à la blessure personnelle, l’asphyxie, la mort, le
feu ou des dégâts de propriété.
Dans des emplacements utilisés pour le stockage de matériels combustibles, les signes doivent être postés
pour spécifier la hauteur d’entassement permise maximale pour maintenir les dégagements exigés de
l’appareil de chauffage au combustibles. Les signes doivent ou être postés adjacents aux thermostats
d’appareil de chauffage ou en absence de tels thermostats, dans un emplacement remarquable.
Pas pour utilisation résidentielle! N’utilisez pas cet appareil de chauffage dans la maison, des chambres
à coucher, des garages attachés, etc. L’installation d’un système d’appareil de chauffage de tube
commercial dans des espaces intérieurs résidentiels peut aboutir aux dégâts de propriété, la
blessure grave, l’asphyxie ou la mort.
!
AVERTISSEMENT
For Your Safety
If you smell gas:
• Open windows.
• Do not touch electrical switches.
• Extinguish any open flame.
• Do not try to light any appliances.
• Immediately call your gas supplier from a
neighbours phone.

3
DET3 Series
Contents
1.0 Introduction .....................................................................4
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Heater Components..........................................................4
Product Specifications........................................................5
2.0 Safety ..........................................................................6
Safety Labels and Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Warning Symbols............................................................8
Applications ................................................................8
Standards, Certifications and Government Regulations..............................9
Clearance to Combustibles ....................................................11
3.0 Installation ......................................................................13
Design Considerations and Prechecks ...........................................13
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
Baffle Assembly and Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Final Heater Assembly .......................................................27
Venting ...................................................................28
Combustion Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Separated Combustion Systems ...............................................36
Combustion Air Supply - Room Air ..............................................37
Optional Unvented Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Gas Supply Installation Instructions .............................................39
Leak Testing................................................................44
Electrical Requirements.......................................................45
Thermostat.................................................................46
Wiring.....................................................................47
Unit-Start-Up (Commissioning) .................................................50
High Altitude Operation .......................................................51
4.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Sequence of Operation .......................................................53
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.0 Troubleshooting Guide............................................................56
6.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Routine Inspection...........................................................60
Heater Components and Parts List ..............................................62
7.0 Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.0 Kit Contents Check List ...........................................................68

4
DET3 Series
1.0 Introduction
1.0 Introduction •Overview •Heater Components
Overview
The intent of this manual is to provide information regarding general safety, installation, operation and
maintenance of the tube heater. You must read, and understand, the instructions and safety warnings in
this manual before installing the tube heater. Additional literature on this and other products are available
at www.brantradiant.com.
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.
Refer to 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.
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 Flexible
Gas Connector
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
DET3 Series
Model Number Gas Type (Select One) BTU/h (High Fire) BTU/h (Low Fire) Straight Length U-Tube Length Weight (lbs.) Recommended Mounting Heights^ Combustion Chamber(s) (Black Coated) Radiant Emitter Tube(s) (Uncoated) Radiant Surface Area (sq. ft.) 36” Bafe Quantity
DET3-20-65 N or LP 65,000 50,000 21’-9” 13’-1” 120 9’ to 14’ Alum HRT 20.2 5
DET3-20-75 N or LP 75,000 50,000 21’-9” 13’-1” 120 10’ to 15’ Alum HRT 20.2 5
DET3-30-65 N or LP 65,000 50,000 31’-5” **17’-9” 160 10’ to 15’ Alum HRT 30.4 4
DET3-30-75 N or LP 75,000 50,000 31’-5” **17’-9” 160 11’ to 18’ Alum HRT 30.4 5
DET3-30-100 N or LP 100,000 65,000 31’-5” **17’-9” 160 12’ to 20’ Alum HRT 30.4 5
DET3-40-65 N or LP 65,000 50,000 41’-1” 22’-9” 190 11’ to 18’ Alum HRT 40.5 3
DET3-40-75 N or LP 75,000 50,000 41’-1” 22’-9” 190 11’ to 18’ Alum HRT 40.5 4
DET3-40-100 N or LP 100,000 65,000 41’-1” 22’-9” 190 12’ to 20’ Alum HRT 40.5 4
DET3-40-125 N or LP 125,000 95,000 41’-1” 22’-9” 190 13’ to 23’ Alum HRT 40.5 5
DET3-40-150 N or LP *150,000 100,000 41’-1” 22’-9” 190 14’ to 25’ Titan/Alum HRT 40.5 5
DET3-50-125 N or LP 125,000 95,000 50’-9” **27’-5” 235 15’ to 27’ Alum HRT 50.6 3
DET3-50-150 N or LP *150,000 100,00 50’-9” **27’-5” 235 15’ to 27’ Titan/Alum HRT 50.6 3
DET3-50-175 N or LP * 175,000 125,000 50’-9” **27’-5” 235 16’ to 30’ Titan/Alum HRT 50.6 3
DET3-50-200 N or LP * 200,000 145,000 50’-9” **27’-5” 235 17’ to 35’ Titan/Alum HRT 50.6 2
DET3-60-150 N or LP *150,000 100,000 60’-5” 32’-5” 265 16’ to 30’ Titan/Alum HRT 60.7 2
DET3-60-175 N or LP * 175,000 125,000 60’-5” 32’-5” 265 16’ to 30’ Titan/Alum HRT 60.7 2
DET3-60-200 N or LP * 200,000 145,000 60’-5” 32’-5” 265 17’ to 35’ Titan/Alum HRT 60.7 2
* Model requires stainless steel tube clamp (P/N: TP-220) to be located at the seam between the primary
combustion chamber and the secondary combustion tube downstream of the burner control box.
** Model requires 5EA-SUB accessory package when installing in a ‘U’ configuration (P/N: TF1B).
^ Factory recommended mounting heights are listed as a guideline.
HRT = Uncoated hot-rolled steel.
Alum = Black coated aluminized treated steel.
Titan = Black coated titanium stabilized aluminized steel.
Product Specications
Chart 1.1 • DET3 Series Specications
1.0 Introduction •Product Specifications

6
DET3 Series
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
LOW
NEUTRAL
HIGH
24V
- 24V HEATER INPUT -
Air Metering Orice
Air Metering Orifice
DO NOT REMOVE
TP-114
TP-3014 1 - 1/2"
SAMPLE
Safety Labels and Their Locations
Back Panel
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.
Do not Rotate/ Gas Hose Label
1.0 Introduction • Safety Signs and Labels
24V LOW
24V OUT
HIGH
- 24V HEATER OUTPUT -
(White crescent
- no relay)
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
- OBSERVE POLARITY -
(Orange
crescent -with
relay option)
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.
KEEPCOVER IN PLACE. REMOVE FOR SERVICE ONLY.
SERVICEACCESS PANEL
IGNITER& FLAME SENSE COMPARTMENT
1.Disconnect gas & electricity.
2.Remove cover by lifting top
coverupward and outward.
CAUTION: HOTSURFACE.
KEEPCOVERIN PLACE. REMOVE FOR SERVICE ONLY.
SERVICE ACCESS PANEL
FAN COMPARTMENT
1. Disconnect gas & electricity.
2. Remove top cover (2 thumbscrews).
3. Remove tsix (6) 1/4” screws.
4. Lift and remove panel.
KEEPCOVER IN PLACE. REMOVE FOR SERVICE ONLY.
F/N: LLTCL001L, C, R
Clearance to Combustibles Labels
Top Panel
Bottom Panel
F/N: LLLOGO1 Logo Label

7
DET3 Series
MODEL /MODELE NO. INPUT BTU/H FOR USE WITH
NATURAL GAS
RADIATEUR A INFRAROUGE A FAIBLE INTENSITE
VOLTS A.C.
STARTING AMPS.
RUNNING AMPS.
120~60Hz
4.8
1.1
MANIFOLD PRESSURE
MIN. INLET PRESSURE
ORIFICE SIZE
3.5” WC
5.0” WC
#4 D.M.S
HEATER TYPE
VERSION
MIN. MOUNTING ANGLE:
COMBUSTION CHAMBER:
4” BC ALUMINIZED
FOR INDOOR USE
BRANT RADIANT HEATERS LIMITED
34 SCOTT AVE., PARIS, ONTARIO
TEL: [phone] WWW.BRANTRADIANT.COM
ANSI Z83.20b - 2011 CSA 2.32b - 2011 Low - Intensity Infrared Htr.
ANS Z83.20b - 2011 CSA - 2011 Low - Intensity Infrared Htr.
SERIAL NO.
0870 XXXX XXXX 0001
RE-VERBER-RAY LOW INTENSITY INFRARED HEATER
FOR INDOOR INSTALLATION ONLY. NOT FOR USE IN RESIDENTIAL DWELLING.
INSTALLATION À L’EXTÉRIEUR SEULEMENT. NE PAS INSTALLER DANS UN LOGEMENT.
MAX. MOUNTING ANGLE:
0 DEGREES
45 DEGREES
FOR STAINLESS STEEL UPGRADES THE
COMBUSTION TUBE IS UPGRADED TO 409
STAINLESS STEEL.
C1
10/11
DET3-40-125N 125,000/95,000
LIGHTINGINSTRUCTIONS
1.PURGE MAIN GAS SUPPLY LINE.
2.ROTAT EHEATER’S MANUAL GAS
VA LVEKNOB TO “ON” POSITION.
3.CLOSE ELECTRICAL CIRCUIT.
4.IF HEAT ERFAILS TO LIGHT, TURN
OFF GAS AND WAIT 5 MINUTES
BEFORE REPEAT INGABOVE.
INSTRUCTIONSPOUR L’ ALLUMAGE
1.PURGER LA CONDUITE D’ALIMENTATION
EN GAZ PRINCIPALE.
2.TOURNER LE BOUTON DU ROBINET
DE GAS A COMMANDE MANUELLE
JUSQU’A CE QU’IL SE TROUVE EN
POSITIONDE MARCHE (“ON”)
3.FERMER LE CIRCUIT ELECTRIQUE.
4.SI L’ APPA REIL DE CHAUFFAGE NE
S’ALLUME PA S, AT TENDRE 5 MINUTES
AVANT DE SUIVRE DE NOUVEAU LES
INSTRUCTIONS CI-DESSUS.
TOSHUT DOWN
1.ROTAT EHEATER’S MANUAL GAS
VA LVEKNOB TO “OFF” POSITION.
2.OPEN ELECTRICAL CIRCUIT.
POURETEINDRE L’ APPAREIL
1.TOURNER LE BOUTON DU ROBINET
DE GAZA COMMANDE MANUELLE
DE L’ APPAREILDECHAUFFAGE
JUSQU’A CE QU’IL DE TROUVE EN
POSITION D’ARRET (“OFF”).
2.OUVRIR LE CIRCUIT ELECTRIQUE.
BRANTRADIANT HEATERS LIMITED
34SCOTT AVENUE, PARIS ON. N3L 3R1
TELEPHONE:[phone]
WWW.BRANTRADIANT.COM
Rating
Plate
Controls Compartment
Fan Compartment
Combustion Chamber
MODEL /MODELE NO.INPUT BTU/HFOR USE WITH
NATURAL GAS
RADIATEUR A INFRAROUGE A FAIBLE INTENSITE
VOLTS A.C.
STARTING AMPS.
RUNNING AMPS.
120~60Hz
4.8
1.1
MANIFOLD PRESSURE
MIN. INLET PRESSURE
ORIFICE SIZE
3.5” WC
5.0” WC
#3 D.M.S
HEATER TYPE
VERSION
MIN. MOUNTING ANGLE:
COMBUSTION CHAMBER:
4” BC ALUMINUM
FOR INDOOR USE
BRANT RADIANT HEATERS LIMITED
34 SCOTT AVE., PARIS, ONTARIO
TEL: [phone] WWW.BRANTRADIANT.COM
ANSI Z83.20b - 2011 CSA 2.32b - 2011 Low - Intensity Infrared Htr.
ANS Z83.20b - 2011 CSA - 2011 Low - Intensity Infrared Htr.
SERIAL NO.
0870 XXXX XXXX 0001
RE-VERBER-RAY LOW INTENSITY INFRARED HEATER
FOR INDOOR INSTALLATIONONLY. NOT FOR USE IN RESIDENTIAL DWELLING.
INSTALLATIONÀ L’EXTÉRIEUR SEULEMENT. NE PAS INSTALLER DANS UN LOGEMENT.
MAX. MOUNTING ANGLE:
0 DEGREES
45 DEGREES
FOR STAINLESSSTEEL UPGRADES THE
COMBUSTION TUBE IS UPGRADED TO 409
STAINLESSSTEEL.
C1
10/11
HL3-40-125N 125,000/95,000
SERVICE ACCESS PANEL
SERVICE ACCESS PANEL
COMPARTIMENT VENTILATEUR
FAN COMPARTMENT
1. Disconnect gas & electricity.
2. Remove top cover
(2 thumbsscrews).
3. Remove six (6) 1/4” screws.
4. Lift and remove panel.
1. Débrancher le gaz et l’electricité.
2. Retirer les 2 vis à main du couvercle
supérieur.
3. Retirer les 6 vis 1/4 po.
4. Soulever et retirer le panneau.
GARDER LE COUVERCLE EN PLACE. NE L’ENLEVER QUE POUR L’ENTRETIEN.
Radiant Tube(s)
16” Burner Tube
SAMPLE
Lighting /Shut Down Instructions Label
Yellow Titanium Alloy Tag
(150,000 BTU/H models and greater)
F/N: LLTB026
F/N: LLTB025R
F/N: LLTB024L
1.0 Introduction • Safety Signs and Labels

8
DET3 Series
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
!
WARNING
!
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.
This heater must be installed and serviced by a trained gas installation and service
personnel only! 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.
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
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.
Not For Residential Use. Installation of a commercial tube heater system in residential indoor spaces
may result in property damage, serious injury or death.
2.0 Safety •Warning Symbols •Applications

9
DET3 Series 2.0 Safety •Standards, Certifications and Government Regulations
Building
Type
Installation of this tube heater in public garages must conform to the following codes:
United States: Standard for Parking Structures NFPA 88A (latest edition) or the
Code for Motor Fuel Dispensing Facilities and Repair Garages NFPA 30A (latest
edition).
Canada: Refer to CAN/CGA B149.1-10: Installation Codes for Gas Burning Appliances
and applicable Standards for Public Garages.
Guidelines:
• 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.
Installation of this tube heater in aircraft hangars must be in accordance with the
following codes:
United States: Refer to Standard for Aircraft Hangars, ANSI/NFPA 409
(latest edition).
In Canada: Refer to Standard CAN/CGA B149.1-10 and applicable Standards for
Aircraft Hangars.
Guidelines:
• In aircraft storage and servicing areas, heaters shall be installed at least 10 ft. (3 m)
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.
Standards, Certications and Government Regulations
Installation of this tube heater must comply 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 B149.1-10, Canadian Electrical Code C22.1
Public
Garages
Aircraft
Hangars
Chart 2.1 • Standards and Code Installation Guidelines •Building Type
Codes and Guidelines

10
DET3 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 2.2 • 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 2.3 • 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 Government Regulations

11
DET3 Series
Clearance to Combustibles
• Paint
• Parked vehicles
• Gasoline
• Storage racks
Combustible items: Moving Objects:
• Wood • Overhead doors
• Paper • Vehicle lifts
• Fabric • Cranes
• Chemicals • Hoists
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:
• Vehicle parking areas
• Vehicles with lifts or cranes
• Storage areas with stacked materials
• Lights
• Sprinkler heads
• Overhead doors and tracks
• Dirty, contaminated environment
• 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
Hazards:
For maximum safety the building must be evaluated for hazards before installing the heating system.
Examples of hazards include, but are not limited to:
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.
Safety Signs and Labels
It is important to provide warnings to alert individuals to potential hazards and safety actions. ANSI
Z83.20b and CSA 2.34 require you to post a sign “specifying the maximum permissible stacking height to
maintain the required clearances from the heater to the combustibles” near the heaters thermostat or in
absence of such thermostats in a conspicuous location. Contact Brant Radiant Heaters Ltd. or an
authorized dealer for Clearance Safety Limit Signs(P/N: BR-SIGN).
Safety warning labels must be maintained on the tube heater. Illustrations of the safety labels, and their
locations, are pictured in the Series Manual. 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 combustibles. Signs must either be posted adjacent to the heater
thermostats or in the absence of such thermostats in a conspicuous location.
WARNING
!
Placement of explosive objects, flammable objects, liquids and vapours close to the
heater may result in explosion, fire, property damage, serious injury or death. Do not
store or use explosive objects, liquids and vapour in the vicinity of the heater.
2.0 Safety •Clearance to Combustibles

12
DET3 Series
Chart 2.4 • 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.
2.0 Safety •Clearance to Combustibles
Model Number
Mounting
Angle*
Sides
Front Behind Top Below
DET3 (20, 30, 40) - 65, 75 [N, P] 0° 9(23) 9(23) 6(15) 60 (152)
45° 39 (99) 8(20) 10 (25) 60 (152)
with 1 side shield 0° 29 (74) 8(20) 6(15) 60 (152)
with 2 side shields 0° 9(23) 9(23) 6(15) 60 (152)
20 ft. from burner 0° 7(18) 7(18) 6(15) 30 (76)
DET3 (30, 40) - 100 [N, P] 0° 14 (35) 14 (35) 6(15) 66 (168)
45° 39 (99) 8(20) 10 (25) 66 (168)
with 1 side shield 0° 29 (74) 8(20) 6(15) 66 (168)
with 2 side shields 0° 16 (41) 16 (41) 6(15) 66 (168)
20 ft. from burner 0° 7(18) 7(18) 6(15) 30 (76)
DET3 (40, 50) - 125 [N, P] 0° 20 (51) 20 (51) 6(15) 76 (193)
45° 58 (147) 8(20) 10 (25) 76 (193)
with 1 side shield 0° 42 (107) 8(20) 6(15) 76 (193)
with 2 side shields 0° 20 (51) 20 (51) 6(15) 76 (193)
20 ft. from burner 0° 7(18) 7(18) 6(15) 30 (76)
DET3 (40, 50, 60) - 150 [N, P] 0° 24 (61) 24 (61) 6(15) 81 (206)
45° 58 (147) 8(20) 10 (25) 81 (206)
with 1 side shield 0° 42 (107) 8(20) 6(15) 81 (206)
with 2 side shields 0° 23 (58) 23 (58) 6(15) 81 (206)
20 ft. from burner 0° 11 (28) 11 (28) 6(15) 44 (112)
DET3 (50, 60) - 175 [N, P] 0° 34 (86) 34 (86) 6(15) 92 (234)
45° 63 (160) 8(20) 10 (25) 92 (234)
with 1 side shield 0° 50 (127) 8(20) 6(15) 92 (234)
with 2 side shields 0° 30 (76) 30 (76) 6(15) 92 (234)
20 ft. from burner 0° 11 (28) 11 (28) 6(15) 44 (112)
DET3 (50, 60) - 200 [N, P] 0° 41 (104) 41 (104) 6(15) 94 (239)
45° 63 (160) 8(20) 10 (25) 94 (239)
with 1 side shield 0° 54 (137) 8(20) 6(15) 94 (239)
with 2 side shields 0° 30 (76) 30 (76) 6(15) 94 (239)
20 ft. from burner 0° 11 (28) 11 (28) 6(15) 44 (112)
Figure 2.1 •Mounting Angles
45° Mounting Angle
0° Mounting Angle
with 1 Side Shield
(P/N: SSE)
0° Mounting Angle
with 2 Side Shields
(P/N: SSE)
Front Behind
Below
Top
Front Behind
Below
Top
Side Side
Below
Top
0° Mounting Angle
Side Side
Below
Top
When installing the tube heating system, the minimum clearances to combustibles for your model tube
heater and system configuration must be maintained. Refer to Chart 2.4 below to determine the required
distances for your model.

13
DET3 Series
3.0 Installation
3.0 Installation •Design Considerations and Prechecks
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. This installation manual, along with
national, 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 combustibles 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 vapours a concern (requiring outside air for combustion or additional ventilation)?
IMPORTANT: Fire sprinkler heads must be located at an appropriate distance from the heater to avoid an
inadvertent discharge. This distance may exceed the published clearance to combustibles. Certain
applications may require the use of high temperature sprinkler heads or the relocation of the heaters.
Fire sprinkler systems containing propylene glycol, antifreeze or other potentially flammable substances
shall not to be used in conjunction with this heater without careful consideration for and avoidance of
inadvertent discharge hazards. For further information consult NFPA 13. Always observe applicable
provinces and local codes.
CAUTION
!

14
DET3 Series
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
3.0 Installation •Design Considerations

15
DET3 Series
Dim. C
Chart 3.1 • Recommended Mounting Heights and Coverages
NOTE: This chart is provided as a guideline. Actual conditions may dictate variation for this data.
Figure 3.3 •Mounting Height Dimensions (see Chart 3.1 for measurements)
Dim. A
Dim. B
Dim. C
Dim. A
Note: Dimensions A, B & C are based upon heaters hung at the factory recommended mounting height.
Factory recommended mounting heights are listed as a guideline. If infrared heaters are mounted too
low or too high, they may result in discomfort or lack of heat. Brant Radiant Heaters Ltd. 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.
Model BTU Range Recommended Mounting Height (ft.) Coverage Area Straight Cong. (LxW) Coverage Area U-Tube Cong. (LxW) Distance Between Heaters (ft.) Dimension A Distance Between Heater Rows (ft.) Dimension B Maximum Distance Between Heaters and Wall (ft.) Dimension C
20 ft. 65 MBH 10’ - 16’ 20’ x 12’ 12’ x 12’ 10’ - 20’ 20’ - 40’ 16’
75 MBH 12’ - 20’ 22’ x 15’ N/A 20’ - 30’ 30’ - 50’ 18’
30 ft. 50-65 MBH 10’ - 16’ 30’ x 14’ 17’ x 13’ 10’ - 20’ 20’ - 40’ 17’
75-125 MBH 12’ - 20’ 33’ x 18’ 18’ x 15’ 20’ - 30’ 30’ - 50’ 20’
40 ft. 50-65 MBH 10’ - 16’ 40’ x 16’ 22’ x 14’ 10’ - 20’ 20’ - 40’ 20’
75-125 MBH 12’ - 20’ 44’ x 21’ 23’ x 17’ 20’ - 30’ 30’ - 50’ 20’
150-175 MBH 16’ - 30’ 45’ x 26’ 24’ x 20’ 30’ - 40’ 40’ - 60’ 25’
50 ft. 100-125 MBH 15’ - 25’ 55’ x 24’ 28’ x 19’ 20’ - 30’ 30’ - 50’ 25’
150-200 MBH 16’ - 30’ 56’ x 30’ 29’ x 23’ 30’ - 40’ 40’ - 60’ 25’
60 ft. 125 MBH 16’ - 25’ 66’ x 27’ 33’ x 21’ 20’ - 30’ 30’ - 50’ 25’
150-200 MBH 17’ - 40’ 67’ x 34’ 34’ x 26’ 30’ - 40’ 40’ - 60’ 25’
3.0 Installation •Recommended Mounting Heights and Coverages

16
DET3 Series
WARNING
!
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. primary combustion chamber.
• Radiant emitter tubes.
Important! 150,000-200,000 BTU/h models must use the 10 ft. titanium alloy treated combustion
chamber as the first tube downstream of the burner control box. The combustion chamber has a
yellow identification label wrapped on the tube (remove label prior to starting up heater).
2
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) may be necessary.
• The spacing between the burner control box mounting brackets and the first hanger should be
approximately 2’-4”(0.7 m).
• The space between the first two hangers placed on the first tube, should be approximately
8’-10”(2.7 m).
• The space between hangers thereafter, one per tube, should be approximately 9’-8”(3 m).
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 (P/N: BR-SIGN) where needed.
3.0 Installation •Hanger Placement and Suspension

17
DET3 Series
Chart 3.2 • Heater Mounting Requirements and Weights
*Refer to page 22 for U-bend configuration dimensions.
** Model requires 5EA-SUB accessory package when installing in a U-shaped configuration.
Model Dimension Straight Configuration Suspension Points Control Box Stabilizer Shipping Weight Chain Set Qty. Straight Configuration (P/N: THCS) Chain Set Qty. w/U-bend (TF1B) Configuration Optional Brass Knuckle (P/N:BK)
DET3-20 21’-9” / 261” 3 2 120 lbs. 5 6 3
DET3-30 31’-5” / 377” 4 2 160 lbs. 6 8 4**
DET3-40 41’-1” / 493” 5 2 190 lbs. 7 8 5
DET3-50 50’-9” / 609” 6 2 235 lbs. 810 6**
DET3-60 60’-5” / 725” 7 2 265 lbs. 910 7
3.0 Installation •Hanger Placement and Suspension
16 in. Burner Tube
Figure 3.4 •Heater Mounting Layout
10 ft. Primary Combustion Chamber
NOTE: Type varies depending on
model. Models 150-200 MBH utilize
titanium as the first 10’ tube.
Radiant Emitter Tube(s)
28 in.
(71 cm)
8.8 ft.
(2.7 m) 9.7 ft.
(2.9 m) 9.7 ft
(2.9 m)
Burner Control Box
Radiant Emitter
Tube(s)
Suspension
Point
Burner Control Box
Suspension Points
Suspension
Point
Suspension Point
NOTE: A yellow band identifying the
combustion chamber(s) is located in the
middle of the tube(models 150-200 MBH).
Remove paper band before starting up
heater.
Stainless Steel Tube Clamp
(150-200 MBH models only)

18
DET3 Series
S-Hook and
#1 Double-Loop Chain
3
Prepare mounting surface, if necessary weld blocks, drill holes (see figure 3.5).
NOTE:The burner control box and radiant tubes should be in straight alignment and level.
4
Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.
5Attach 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.
6
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
Wood Beam
Concrete Beam
Beam Clamp
Screw Hook
Screw Hook
with Locknut
and Washer
Threaded Rod
and Turnbuckle
Threaded Rod
Chain
I-Beam
Beam Clamp
Chain Chain
I-Beam
3
4
6
5
3
4
5
6
3
4
6
3
4
6
3.0 Installation •Hanger Placement and Suspension

19
DET3 Series
For 45 degree hanging angle use two
S-hooks and two #1 double-loop chains. For variety of hanging angles, use the 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 Brass Knuckles
(P/N: BK) fittings, #1 double-loop chains and
S-hooks.
U-Tubes can be mounted from a single suspension point
using a 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 Knuckles
3.0 Installation •Hanger Placement and Suspension

20
DET3 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 page 27 for tube installation sequence. Place the combustion chamber as the first tube
connected to the burner control box. Models 150-200 MBH utilize a titanium combustion chamber with
yellow identification tag.
Figure 3.9 •Attach Tube Clamps
Hanger
Welded Seam
Faces Down
Swaged End
Tube Clamp
Radiant Tube
IMPORTANT! 150,000 to 200,000 BTU/h models must be installed
with a stainless steel tube clamp (P/N: TP-220) located at the seam
between the primary combustion chamber and the second tube
section downstream of the burner control box.
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
Slide tube clamps onto radiant tubes (see figure 3.9)
2
Figure 3.8 •Attach Hangers
3.0 Installation •Radiant Tube Assembly