BRANT RADIANT LS3 User Manual
!
LS3 Series
Installation Manual
The LS3 Series Infrared Tube Heater is a positive pressure, single-stage radiant heater system. This
manual provides specific information related to the LS3 Series model. All persons involved with the
installation, operation and maintenance of the heater system must read and understand the information
in this manual.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read the installation, operation and maintenance
instructions thoroughly before installing or servicing this equipment.
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.
For Your Safety
If you smell gas:
• Do not try to light any appliance. • Immediately call your gas supplier from a neighbor’s phone.
• Do not touch any electrical switch. • Follow the gas supplier’s instructions.
• Do not use any phone in your building. • If you cannot reach your gas supplier, call the fire department.
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)
LIOLS3-Rev. 32513
Print: 1M-3/14_r2-7/14 (CDS)
1.0 Introduction • Table of Contents
LS3 Series
Contents
1.0 Introduction ......................................................................3
Heater Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications....................................................................... 3
Safety Signs and Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.0 Safety ...........................................................................6
Applications ........................................................................ 6
Standards, Certifications and Government Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Clearance to Combustibles ............................................................ 8
3.0 Installation ......................................................................10
Design Considerations and Prechecks.................................................. 10
Recommended Mounting Heights and Coverages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Hanger Placement and Suspension ................................................... 12
Radiant Tube Assembly.............................................................. 16
Optional Elbow or U-Bend Accessory Configuration ....................................... 17
Burner Control Box Suspension ....................................................... 19
Reflector Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Final Heater Assembly............................................................... 22
Venting........................................................................... 23
Combustion Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Separated Combustion Systems....................................................... 31
Combustion Air Supply - Room Air ..................................................... 32
Optional Unvented Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Gas Supply Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Electrical Requirements and Wiring Diagrams ............................................39
Typical Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Thermostat Connection.............................................................. 40
Unit Start-up (Commissioning) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
High Altitude Operation .............................................................. 46
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warning Symbols.................................................................... 6
4.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Diagnostics ....................................................................... 48
Operating Instructions ............................................................... 47
5.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Heater Components and Parts List..................................................... 54
Routine Inspection.................................................................. 56
Limited Warranty ................................................................... 58
Kit Contents ....................................................................... 60
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
2
LS3 Series
1.0 Introduction • Overview • Heater Components • Specifications
1.0 Introduction
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 page 60 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 Detroit Radiant Products of any discrepancy or missing kit
contents prior to installing unit.
Specifications
Chart 1.1 • LS3 Series Specifications
Model
Number
LS3-10-25
LS 3-10 -30
LS3-15-25
LS 3-15-30
LS3-15-40
LS3-15-50
LS3-20-40
LS3-20-50
Gas Type
(Select one)
Maximum Input
(BTU/h)
N or LP 25,000 12’-1” N/A 70 lbs. 8’ to 11’ Titan N/A Yes
N or LP 30,000 12’-1” N/A 70 lbs. 8’ to 11’ Titan N/A Yes
N or LP 25,000 16’-10 ” N/A 85 lbs. 8’ to 13’ Titan Alum Yes
N or LP 30,000 16’-10 ” N/A 85 lbs. 8’ to 13’ Titan Alum Yes
N or LP 40,000 16’-10 ” N/A 85 lbs. 8’ to 13’ Titan Alum Yes
N or LP 50,000 16’-10 ” N/A 85 lbs. 10’ to 15’ Titan Alum No
N or LP 40,000 21’-10 ” 13’-0” 100 lbs. 8’ to 13’ Titan Alum Yes
N or LP 50,000 21’-10 ” 13’-0” 100 lbs. 9’ to 15’ Titan Alum No
Straight Length
U-Tube Length
Standard
Weight (lbs.)
Recommended
Mounting Height**
Combustion
Chamber (Black Coated)
Radiant Emitter
Tube (s) (Black
Coated)
Residential
Certification^
LS3-30-50*
* Model requires LV3-5EA-SUB optional accessory package when installing in a ‘U’ configuration (P/N: DB-TF1B/TF1B).
** 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.
N or LP 50,000 31’-7 ” 17’- 8 ” 120 lbs. 9’ to 14’ Titan Alum Yes
3
!
1.0 Introduction • Safety Signs and Labels
- 120V HEATER INPUT -
LS3 Series
WARNING
Read and understand all safety information and warnings in this manual before
installation, operation and maintenance of the radiant tube heater system.
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.
HOT
120V
F/N : LLV3EP1
NEUTRAL
EARTH
F/N: LLAC023
Combustion Air
Connector Label
HOT
NEUTRAL
120V
EARTH
- 120V HEATER INPUT -
3
FAN COMPARTMENT
1. Disconnect gas & electricity.
2. Remove top cover (2 thumbscrews).
3. Remove tsix (6) 1/4” screws.
4. Lift and remove panel.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
SERVICE ACCESS PANEL
Top Panel
F/N : LLV3EP 6
SERVICE ACCESS PANEL
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
4. Swing hinged panel downward.
3. Remove top cover.
2. Remove four (4) thumbscrews.
1. Disconnect gas & electricity.
CONTROLS & GAS VALVE COMPARTMENT
Bottom Panel
Back Panel
F/N: LLTB018 (NG)
F/N: LLTB 0 19 (LP)
F/N: LLTCL006L/C/R
Clearance to Combustibles Label
F/N: LLLOGO1 Logo Label
4
LS3 Series
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
(586) 756-0950 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
AVOID EQUIPMENT FAILURE
THIS 10 FT. TUBE IS THE
COMBUSTION CHAMBER.
THIS TUBE MUST BE THE FIRST TUBE
FOLLOWING THE BURNER CONTROL BOX.
!
INSTALLER
The combustion chamber utilizes either 409
stainless, titanium alloy or aluminized steel -
depending on the model number of your heater.
Rotate the tube’s welded seam to bottom.
Consult the manual(s) for further details.
SERVICE ACCESS PANEL
IGNITER & FLAME SENSE COMPARTMENT
1. Turn off gas & electricity.
2. Remove cover by lifting top
cover upward and outward.
CAUTION: HOT SURFACE.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
F/N: LLTB026
SERVICE ACCESS PANEL
Controls Compartment
F/N: LLTB025R
SERVICE ACCESS PANEL
F/N: LLTB024L
1.0 Introduction • Safety Signs and Labels
LOW-INTENSITY INFRARED HEATER
®
RADIATEUR À INFRAROUGE À FAIBLE INTENSITÉ
MODEL NUMBER
NUMÉRO DE MODÈLE
LS3-20-40N
MAX. HEAT INPUT
MAX. DEBIT CALORIFIQUE
MIN. HEAT INPUT
MIN. DEBIT CALORIFIQUE
TYPE OF GAS
TYPE DE GAZ
VENT CATEGORY
ÉVENT CATÉGORIE
COMBUSTION CHAMBER
THIS DESIGN COMPLIES WITH STANDARD(S):
COMPLES DE CETTE CONCEPTION AVEC LA NORME:
ANSI Z83.20b-2011 • CSA2.34B-2011 RADIANT TUBE HEATER
AGA 7-89 RESIDENTIAL RADIANT TUBE HEATER
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI 48089
(586) 756-0950 www.reverberray.com
SERIAL NUMBER
NUMÉRO DE SÉRIE
YYMMREPCSHIPPE#### 09/12
MANIFOLD PRESSURE
PRESSION A LA TUBULURE D'ALIMENTATION
BTU/h
40,000
MAXIMUM INLET PRESSURE
PRESSION D'ALIMENTATION MAXIMALE
BTU/h
40,000
MINIMUM INLET PRESSURE FOR PURPOSE OF ADJ.
PRESSION D'ALIMENTATION EN GAS MIN. ADMISE
NATURAL
ORIFICE SIZE
CATEGORY III
DIM DE L'INJECTEUR
TP-26B; INCH BC ALUMINIZED
SAMPLE
INCHES W.C.
14.0
INCHES W.C.
INCHES W.C.
5.0
NATURAL GAS PROPANE GAS
D.M.S.
57
49
FOR COMMERCIAL / INDUSTRIAL USE.
FOR INDOOR USE ONLY.
D.M.S.
MIN. MOUNTING ANGLE
MIN. ANGLE DE SUPPORT
MAX. MOUNTING ANGLE
MAX. ANGLE DE SUPPORT
HEATER BUILD TYPE
MADE IN U.S.A.
VOLTAGE
AMPS
PHASE
FREQUENCY
VERSION
1203.5
SINGLE
60
VAC
2.4
Hz
0°
45°
C1
Rating Plate
Bill of Material
LS3-20-40N
LS3-40
Production Code:
11.13
Version:
Data on this label is for the model shown on this label. If your heater has been converted,
this information is not accurate. Please contact the factory for assistance.
BURNER COMPONENTS:
Gas Valve:
Circuit Board:
Wire Harness:
N.O. Switch:
N.O. VL Orifice:
N.C. Switch:
N.C. VL Orifice:
Diff Switch:
Diff VL Orifice:
Igniter:
Burner:
16” Tube:
Ind. Lights:
HEATER
For parts replacement information, contact factory at 586-756-0950 or visit www.drp-co.com/parts.
(Specify TP-#’s)
VR4205M-1324
Micro 60-24
3 PCS Harness
None
None
None
None
IS22016051F5169
Grey (+ / -)
Norton
High
SAMPLE
4” Gen.
Yellow - 120V
Orifice Type:
TYPE:
Gas:
TP-204#
Air:
TP-44#31 5/8”
C1
840A
851
852
N/A
N/A
264E
50
201B
1080
828
C1 C2 C3
3
1 1/2”
Serial No.: 1311XXXXXXXXXX 0001
None
Stock:
Add-On:
N/A
None
Diag. Light:
None
Term. Block:
None
Transformer:
Fasco Lg.
Fan:
50Hz - 120V
Alt. Fan:
When Specified
Alt. Fan Usage:
None
Relay:
None
Filter:
None
24 Volt In:
120V Cord
120 Volt In:
7/8” FC Flare
Gas In:
None
Extra VL Orifice:
Internal Use Only:
Electric:
1
LLWT038
Tag:
1 5/8”
None
Special 1:
Special 2:
N/A
N/A
55A
55B
N/A
N/A
334
333
83
17
1 7/16”
Burner Control Box
Component Label
(located inside the center
compartment lid)
Fan
Compartment
F/N: LL01 - Clearance Safety Tag
(Affix adjacent to heater’s thermostat)
F/N: LLTB004
(all heaters with 409 stainless steel tubes)
16” Burner Tube
Al-Ti Combustion
Chamber
Aluminized
Radiant Tube(s)
(if applicable)
F/N: LLTCL015
Lighting Instructions
5
2.0 Safety • Warning Symbols • Applications
!
!
!
LS3 Series
2.0 Safety
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.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, serious injury or death. Read and understand, the installation,
operation and maintenance instructions thoroughly before installing or servicing this
equipment. Only trained, qualified gas installation and service personnel may install or
service this equipment.
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.
Warning indicates a potentially hazardous situation
WARNING
CAUTION
NOTICE
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.
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 marshal, insurance carrier and other authorities for approval if the
proposed installation is in question.
6
LS3 Series
!
2.0 Safety • Applications • Standards, Certifications and Regulations
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.
WARNING
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.
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 marshal 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.
7
!
2.0 Safety • Clearance to Combustibles
!
LS3 Series
Clearance to Combustibles
A critical safety factor to consider before installation is the clearances to combustibles. Clearance to
combustibles
and the combustible item
The following is a partial list of items to maintain clearances from:
Combustible items: Moving Objects:
• Wood • Overhead doors
• Paper • Vehicle lifts
• Fabric • Cranes
• Chemicals • Hoists
Hazards:
For maximum safety the building must be evaluated for hazards before installing the heating system.
Examples include, but are not limited to:
is defined as the minimum distance you must have between the tube surface, or reflector,
. Considerations must also be made for moving objects around the tube heater.
• Paint
• Parked vehicles
• Gasoline
• Storage racks
• 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
• Vehicle parking areas
• Vehicles with lifts or cranes
• Storage areas with stacked materials
• Lights
• Sprinkler heads
• Overhead doors and tracks
• Dirty, contaminated environment
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 of the heater.
CAUTION
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.
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 2.1 on page 9
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.
8
!
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.
WARNING
Failure to comply with the stated clearances to combustibles may result in
personal injury, property damage and/or death.
Chart 2.1 • Clearance to Combustibles in Inches (see Figure 2.1 for Mounting Angles)
Model Number
(Length) - MBH
LS3 (10, 15) - 25 [N, P]
LS3 (10, 15) - 30 [N, P]
with 1 side shield 0° 29 8 4 36
with 2 side shields 0° 9 9 4 36
LS3 (15, 20) - 40 [N, P]
with 1 side shield 0° 42 8 6 45
with 2 side shields 0° 20 20 6 45
LS3 (15, 20, 30) - 50 [N, P]
with 1 side shield 0° 29 8 6 48
with 2 side shields 0° 16 16 6 48
20 ft. from burner 0° 7 7 6 30
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.
Mounting
Angle*
25,000 & 30,000 BTU/h MODELS
0° 8 8 4 36
45° 39 8 10 36
40,000 BTU/h MODELS
0° 15 15 6 45
45° 58 8 10 45
50,000 BTU/h MODELS
0° 11 11 6 48
45° 39 8 10 48
Front Behind Top Below
Sides
Figure 2.1 • Mounting Angles
0° Mounting Angle
with 2 Side Shields
(P/N: SSE)
Top
0° Mounting Angle 45° Mounting Angle
Top
Top
0° Mounting Angle
with 1 Side Shield
(P/N: SSE)
Top
Side
Below
Side
Front
Below
Behind
Front
Below
Behind
Side Side
Below
9
!
3.0 Installation • Design Considerations and Prechecks
LS3 Series
3.0 Installation
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, serious injury or death.
Read and understand, the installation, operation 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 velocities
above 5 mph. The use of adequate wind barrier(s) may be required.
10
LS3 Series
3.0 Installation • Recommended Mounting Heights
Chart 3.1 • Recommended Mounting Heights and Coverages
NOTE: This chart is provided as a guideline. Actual conditions may dictate variation from this data.
Model
Maximum Input
(BTU/h)
Recommended
Mounting Height
(ft.)*
Coverage Area
Straight Config.
(LxW)
Coverage Area
U-Tube Config.
(LxW)
Distance Between
Heaters (ft.)
Dimension A
Distance Between
Heater Rows (ft.)
Dimension B
Maximum Distance
Between Heaters
and Wall (ft.)
10 f t. 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 f t. 25,000 8’ - 13’ 20’ x 12’ N/A 10’ - 20’ 20’ - 40’ 16’
30,000 8’ - 13’ 20’ x 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’
* 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 too low
or too high, they may result in discomfort or lack of heat. Detroit Radiant Products Company 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 3.1 • Mounting Height Dimensions • see Chart 3.1 for dimensions
Dimension C
Dim. A
Dim. B
Dim. A
Dim. C
Dim. C
Note: Dimensions A, B & C are based upon heaters hung at the factory recommended mounting height.
11
!
3.0 Installation • Hanger Placement and Suspension
LS3 Series
Hanger Placement and Suspension
WARNING
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.
Suspension of the heater must conform to applicable codes referenced in the Safety section and
these instructions.
Lay all radiant tubing out in the following order. Position tubes in approximate location (see Figure 3.2).
1
• 10 ft. 4” O.D. or 4” to 3” O.D. titanium treated combustion chamber.
• 3” O.D. aluminized radiant emitter tube(s) if applicable.
Connect the female end of the titanium combustion chamber to the 16” burner tube by
2
using the 4” stainless steel tube clamp (TP-220).
Important! The 10 ft. titanium alloy treated combustion chamber must be placed as the first tube
downstream of the burner control box. The combustion chamber has an orange identification
sticker located on the swaged end of the tube.
Place a 4” tube hanger (TP-19B) on the tapered titanium combustion chamber’s 4” O.D. end. The
3
spacing between the burner control box mounting brackets and the 4” tube hanger should be 2’-4”.
Mark locations for hanging points.
4
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”.
12
LS3 Series
Figure 3.2 • Heater Mounting Layout
3.0 Installation • Hanger Placement and Suspension
NOTE: A sticker identifying the combustion chamber(s) is located on the
swaged end of the tube(s).
Suspension
Point
Suspension
2’ 4”
Point
8’ 10”
3” or 4” Tube
Clamp (TP-1077
or TP-21B )
3” or 4” Tube Hanger
(TP-1079 or T P-19B)
Burner Control Box
Suspension Points
Igniter/
Sensor Box
Suspension
Point
9’ 8”
9’ 8”
3” O.D. Aluminized
Steel Radiant Emitter
Tube(s) (if applicable)
10 ft. 4” to 3” O.D. Tapered or 10 Ft. 4” O.D.
Titanium Treated Combustion Chamber
4” Tube Hanger (TP-19B)
4” Stainless Steel
Tube Clamp (TP-220)
16” Burner
Burner
Control Box
Tube
Chart 3.2 • Heater Mounting Requirements and Weights
Model
10 f t. 12’-1” 2 2 70 lbs. 4 N/A 2 N/A
15 f t. 16 ’-10” 3 2 85 lbs. 5 N/A 3 N/A
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
20 ft. 21’-10” 3 2 100 lbs. 5 6 3 2
30 ft. 31’-7” 4 2 120 lbs. 6 7 4 3
* Refer to page 18 for U-bend configuration dimensions.
13
3.0 Installation • Hanger Placement and Suspension
Prepare mounting surface, if necessary weld blocks, drill holes (see figure 3.3).
5
NOTE: The burner control box and radiant tubes should be in straight alignment and level.
Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.
6
Attach and close S-hook (P/N: S-Hook) and #1 double-loop chain (P/N: THCS) to anchor. Check that
7
it is securely attached. NOTE: Threaded rod and turnbuckles may be used.
Attach hangers to chains. Adjust chain lengths until radiant tubing is level and equal weight distribution
8
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 3.3 • Mounting the Hangers
I-Beam
5
5
I-Beam
LS3 Series
Beam Clamp
6
Threaded Rod
7
and Turnbuckle
Concrete Beam
5
Screw Hook
6
Beam Clamp
6
S-Hook and
7
#1 Double-Loop Chain
Chain
8
Wood Beam
5
8
Chain
Screw hook
6
with Locknut
and Washer
14
Chain
8
LS3 Series
Figure 3.4 • U-Tube Hanger Mounting Options
Single Mounting
Bracket
3.0 Installation • Hanger Placement and Suspension
Brass Knuckle
Exhaust
End
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 3.5 • Angled Hanger Mounting Options
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.
45°
30°
15°
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 doubleloop chain and S-hook.
15
3.0 Installation • Radiant Tube Assembly
Radiant Tube Assembly
To install the radiant tubes:
Place tubes in hangers with the welded seam facing downward and the swaged end of the tube
1
towards the exhaust end of the heater system (see Figure 3.6).
Refer to page 22 for tube installation sequence.
Figure 3.6 • Attach Hangers
Radiant Tube
LS3 Series
Swaged End
Hanger
Welded seam
faces down
Slide tube clamps onto radiant tubes (see figure 3.7).
2
Figure 3.7 • Attach Tube Clamps
Concave surface
Tube Clamp
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.
16
LS3 Series
Slip-fit the radiant tube sections together until tightly connected (install the swaged end of each tube
3
3.0 Installation • Tubes: Optional Elbow or U-Bend Accessory Configuration
towards exhaust end). NOTE: If it is difficult to mate the tubes, they may be installed incorrectly.
Center tube clamps over the seam where two radiant tube sections connect. If necessary, rotate tube
4
clamps so they will not interfere with the reflector end caps during expansion and contraction of
the heater.
Tighten tube clamp bolts to secure. When proper compression is obtained (40-60 ft-lbs. torque) the
5
tube seam will create a visible mark on the tube clamp. NOTE: Excessive torque may damage the
tube clamp.
Determine the location of the burner control box and note the placement of the mounting chains.
6
Figure 3.8 • Tube Connections
Tubes fit snuggly together and the
tube clamp is centered over the seam.
The tube clamp is tight when the
torque is achieved (normally
when seam becomes visible).
Tubes are not fit snuggly
together and the tube clamp is
not centered over the seam.
Correct Tube Connection Incorrect Tube Connection
Optional Elbow or U-Bend Accessory Configuration
A 90 degree elbow or 180 degree U-bend accessory fitting may be installed in the radiant tube heating
system. Refer to Chart 3.3 for minimum distance requirements from the burner control box.
When installing an Elbow or U-Bend Accessory Fitting:
• The top clearance of an uncovered (no reflector) elbow or U-bend accessory fitting to combustibles
is 18 in.
• If operating the heater un-vented, separate the intake air to the heater from its exhaust products a
minimum of 4 ft., further separation may be necessary. Combustion air may also be supplied.
• A maximum of two 90° elbows or one 180° U-bend can be installed on a heater.
Figure 3.9 • Optional Tube Connections
90 Degree 3” Elbow
(P/N: DB-E6) or
4” Elbow (P/N: E6)
180 Degree 3” U-Bend
(P/N: DB-TF1B) or
4” U-Bend (P/N: TF1B)
17
3.0 Installation • Optional Elbow or U-Bend Accessory Configuration
LS3 Series
Figure 3.10 • Elbow and U-Bend Clearances
Tube Clamp
Tube Clamp
8”
Figure 3.11 • U-Bend and Elbow Dimensions
180 Degree 3” U-Bend
P/N: DB-TF1B
180 Degree 4” U-Bend
P/N: TF1B
Dimension A
Dimension A
12”
Dimension B
Elbow can be set
in both directions
Tube Clamp
U-Bend can be set in both directions
Tube Clamp
90 Degree 3” Elbow
P/N: DB-E6
90 Degree 4” Elbow
P/N: E6
10”
6”
15”
16”
18”
10”
20”
6”
16”
16”
20”
20”
See Chart 3.6 on page 22 for tube diameters and locations.
Chart 3.3
Minimum Distance From Burner
Control Box to Elbow or U-bend
Accessory Fitting
Model BTU Range Dimension A
25,000 N/A
30,000 N/A
40,000 10 ft.
50,000 10 ft.
Chart 3.4
Overall Dimensions for Heaters Configured With U-Bend
Tube Length Dimension B Notes
10 ft. N/A N/A
15 f t. N/A N/A
20 ft. 13’-0 ” N/A
30 ft. 17’- 8 ” Requires P/N: LV3-5EA-SUB *
* The LV3-5EA-SUB add-on may only be ordered at the time of
heater production.
11. 5 ”
11. 5 ”
12.5”
12.5”
18
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