Detroit Radiant Products REV Series User 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
thermostat or, in the absence of such thermostat, 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.
REV Series
Installation Manual
The REV Series infrared tube heater is a positive pressure, two stage radiant heater system. This manual
provides specific information related to the REV Series models. All persons involved with the installation,
operation, and maintenance of the heater system must read and understand the information in this
manual.
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.
LIOREV-Rev. 34721
Print: XM-10/23 (DRPC)
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)

1.0 Introduction
32
REV Series REV 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 page 68 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
Contents
1.0 Introduction..............................................................................3
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Heater Components.........................................................................3
Specifications ..............................................................................3
Safety Labels and Their Locations .............................................................4
2.0 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Standards, Certifications, and Government Regulations ...........................................7
Clearances to Combustibles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.0 Installation..............................................................................10
Design Considerations and Prechecks.........................................................10
Heater Suspension and Placement ...........................................................12
Available Configurations ....................................................................15
Tube and Reflector Installation ...............................................................16
Winglet and End Cap Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Burner Control Box Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Bae Assembly and Placement ..............................................................28
Final Heater Assembly......................................................................29
Venting...................................................................................30
Vertical Venting (Category I) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Horizontal Venting (Category III)..............................................................34
Common Venting (Category I) ................................................................36
Common Venting (Category III) ...............................................................37
Optional Unvented Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Combustion Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Electrical Requirements and Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Field Wiring Supply Voltage ..................................................................48
Thermostat Connection .....................................................................48
Unit Start-up (Commissioning) ...............................................................50
High Altitude Operation .....................................................................54
4.0 Operation...............................................................................55
Operating Instructions ......................................................................55
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.0 Maintenance ............................................................................58
Troubleshooting Guide......................................................................58
Heater Components and Parts List............................................................62
Routine Inspection .........................................................................64
Limited Warranty ..........................................................................67
Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Model Number Gas Type (select one) Maximum Input (MBH) Minimum Input (MBH) Length Standard Weight (lbs.) Recommended Mounting Height* Bae Quantity Combustion Chamber (Black Coated) Radiant Emitter Tube(s) (Black Coated)
REV-20-65 Nat. or Prop. 65 50 21’-9” 206 9’ to 14’ 5Alum Alum
REV-20-75 Nat. or Prop. 75 50 21’-9” 206 10’ to 15’ 5Alum Alum
REV-30-65 Nat. or Prop. 65 50 31’-5” 289 10’ to 15’ 4Alum Alum
REV-30-75 Nat. or Prop. 75 50 31’-5” 289 11’ to 18’ 5Alum Alum
REV-30-100 Nat. or Prop. 100 65 31’-5” 289 12’ to 20’ 5Alum Alum
REV-40-65 Nat. or Prop. 65 50 41’-1” 362 11’ to 18’ 3Alum Alum
REV-40-75 Nat. or Prop. 75 50 41’-1” 362 11’ to 18’ 4Alum Alum
REV-40-100 Nat. or Prop. 100 65 41’-1” 362 12’ to 20’ 4Alum Alum
REV-40-125 Nat. or Prop. 125 82 41’-1” 362 13’ to 23’ 5Alum Alum
REV-40-150 Nat. or Prop. 150 100 41’-1” 362 14’ to 25’ 5Titan-Alum Alum
REV-50-125 Nat. or Prop. 125 82 50’-9” 450 15’ to 27’ 3Alum Alum
REV-50-150 Nat. or Prop. 150 100 50’-9” 450 15’ to 27’ 3Titan-Alum Alum
REV-50-175 Nat. or Prop. 175 125 50’-9” 450 16’ to 30’ 3Titan-Alum Alum
REV-50-200 Nat. or Prop. 200 145 50’-9” 450 17’ to 35’ 2Titan-Alum Alum
REV-60-150 Nat. or Prop. 150 100 60’-5” 523 16’ to 30’ 2Titan-Alum Alum
REV-60-175 Nat. or Prop. 175 125 60’-5” 523 16’ to 30’ 2Titan-Alum Alum
REV-60-200 Nat. or Prop. 200 145 60’-5” 523 17’ to 35’ 2Titan-Alum Alum
Chart 1.1 • REV Series Specifications
* Recommended mounting heights are provided as a guideline. Actual conditions may dictate variations from this data.
Do not mount below 8 feet.
Titan-Alum = Titanium-stabilized black-coated aluminized treated steel.
Alum = Black-coated aluminized treated steel.
1.0 Introduction •Table of Contents 1.0 Introduction •Overview •Heater Components •Specifications

WARNING
!
54
REV Series REV Series 1.0 Introduction •Safety Labels and Their Locations
1.0 Introduction •Safety Labels and Their Locations
Safety Labels and Their Locations
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.
24V LOW
24V OUT
HIGH
- 24V HEATER OUTPUT -
F/N: LLV3EP4
24 V Input (White
crescent - without
relay option)
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
NEUTRAL
EARTH
HOT
- 120V HEATERINPUT -
120V
LOW
NEUTRAL
HIGH
24V
- 24V HEATER INPUT -
F/N: LLAC
Air Metering Orifice
Air Metering Orifice
DO NOT REMOVE
TP-114
TP-3014 3”
SAMPLE
Back Panel
Top Panel
Bottom Panel
F/N: LLTB018 (Natural Gas)
F/N: LLTB019 (Prop. Gas)
F/N: LLTCL006L, LLTCL020, LLTCL001R
Clearances to Combustibles Labels
F/N: LLV3EP1
120V Input
F/N: LLV3EP14
(Operational Indicator Lights)
F/N: LLLOGO32
Logo Label
REV-40-125N
Please contact the factory for assistance, parts information and/or list prices at 586-756-0950 or visit store.reverberray.com
SERIAL NUMBER: 2201XXXXXXXXXX 0001
PRODUCTION CODE: REV-C1
COMPONENT PART NO. DESCRIPTION
CIRCUIT BOARD ......... TP-851B Fenwal
GAS VALVE .................TP-3140 24VAC Two Stage
GAS INLET ................... TP-84 1/2” NPT to Flare
IGNITER....................... TP-50A Glo-Bar
IND. LIGHT #1.............. TP-828 Amber LED Ind. Light
IND. LIGHT #2.............. TP-828 Amber LED Ind. Light
IND. LIGHT #3.............. TP-1425 Green LED Ind. Light
VERSION
OPTIONS
01/22
None
BILL OF MATERIALS
COMPONENT PART NO. DESCRIPTION
INDUCER FAN ............. TP-55A 1/20 hp Inducer Assy
POWER ENTRY ........... 333 BX Conduit Connector
RELAY.......................... N/A N/A
STARTER TUBE .......... TP-3380 HSI-Starter Tube
TERMINAL BLOCK ...... N/A N/A
TRANSFORMER.......... TP-826 120Pri 24Sec
WIRE HARNESS .......... TP-3252 Wire Harness
MODEL SPECIFIC DATA TUBE & REFLECTOR PARTS
AIR ORIFICE SIZE....... TP-3014 1 5/8
BURNER ...................... TP-3072 Green
GAS ORIFICE SIZE ..... 22 DMS
1ST PRES. SWITCH.... TP-1264A Diff. Pressure Switch
2ND PRES. SWITCH ...N/A N/A
WIRING DIAGRAM ......LLWTXXX Rev. 1
BAFFLE........................ TP-65I 5
COMB. TUBE ............... TP-26B 10’ Aluminized Tube
HANGERS.................... TP-XXX REV Hanger
REFLECTORS ............. TP-XXX REV
RADIANT TUBE ........... TP-26A 4” Aluminized
TUBE CLAMP............... TP-21B 4” Galv Clamp
Controls Compartment
F/N: LLTB026 F/N: LLTB024L
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.
SERVICE ACCESS PANEL
SAMPLE
SERVICE ACCESS PANEL
IGNITER & FLAME SENSE COMPARTMENT
1. Disconnect gas & electricity.
2. Remove cover by lifting top
cover upward and outward.
CAUTION: HOT SURFACE.
KEEPCOVER IN PLACE. REMOVE FOR SERVICE ONLY.
Burner Control Box Component Label (located
inside the center compartment lid)
Rating
Plate
F/N: LLV3EP2
24 V Input
(Orange crescent -
with relay option)
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.
F/N: LLTB004 (orange)
(150,000-200,000 BTU/h models)
Fan Compartment
16” Burner Tube Combustion Chamber
F/N: LLTB025R
F/N: LL001 - Clearance Safety Tag
(Ax adjacent to heater’s thermostat)
Clearances to combustibles must be maintained at
all times in order to prevent the ignition of
combustible materials. 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 thermostats or, in the absence of such thermostats, in a
conspicuous location. Clearances are provided on the heater’s
safety label and in the heater’s Installation, Operation, and
Maintenance manual. Product installation and operation must
comply with applicable standards, codes, and regulations. Post
this tag adjacent to the heater’s thermostat or controls before
operating the heater.
- INSTALLER: READ AND POST THIS NOTICE -
LL001-XM-07/18 (CDS)
This product can
expose you to
chemicals including
lead and carbon
monoxide, which are known to the
State of California to cause birth
defects or other reproductive harm.
For more information go to
www.P65Warnings.ca.gov.
WARNING
!
Avoid Serious Injury, Death, or Property Damage.
Maintain Clearances to Combustible to Prevent the Risk of Fire.
California Proposition 65
SERVICE ACCESS PANEL
Radiant Tube(s)
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
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.
125,000
82,000
CATEGORY I
4.8
SINGLE
60
1203.5
14.0
5.0
4
D.M.S.
ANSI Z83.20-2016 • CSA2.34-2016 RADIANT TUBE HEATER
C1
NATURAL
0°
45°
REV-40-125N
YYMMREPCSHIPPE#### 01/22
TP-26A
112671
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
VENTCATEGORY
ÉVENTCATÉGORIE
BTU/h
BTU/h
VOLTAGE
AMPS
PHASE
FREQUENCY
Hz
VAC
MANIFOLDPRESSURE
PRESSIONA LA TUBULURE D'ALIMENTATION
MAXIMUMINLET PRESSURE
PRESSIOND'ALIMENTATION MAXIMALE
MINIMUMINLET PRESSURE FOR PURPOSE OF ADJ.
PRESSIOND'ALIMENTATION EN GAS MIN. ADMISE
INCHESW.C.
INCHESW.C.
INCHESW.C.
RADIATEUR À INFRAROUGE À FAIBLEINTENSITÉ
ORIFICESIZE
DIMDE L'INJECTEUR
NATURALGAS
THISDESIGN COMPLIES WITH STANDARD(S):
COMPLESDE CETTE CONCEPTION AVEC LA NORME:
HEATERBUILD TYPE
TYPEOF GAS
TYPEDE GAZ
MIN.MOUNTING ANGLE
MIN.ANGLE DE SUPPORT
MAX.MOUNTING ANGLE
MAX.ANGLE DE SUPPORT
MODELNUMBER
NUMÉRODE MODÈLE
SERIALNUMBER
NUMÉRODE SÉRIE
VERSION
COMBUSTIONCHAMBER
FOR COMMERCIAL / INDUSTRIAL USE.
FOR INDOOR USE ONLY.
MADE IN U.S.A.
125,000
82,000
CATEGORY I
4.8
SINGLE
60
1203.5
14.0
5.0
4
D.M.S.
ANSI Z83.20-2016 • CSA2.34-2016 RADIANT TUBE HEATER
C1
NATURAL
0°
45°
REV-40-125N
YYMMREPCSHIPPE#### 01/22
TP-26A
112671
SAMPLE

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), NFPA 30A, NFPA 52
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.
Maintenance Facilities:
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, NFPA 52 Vehicular Natural Gas Fuel
Systems Code, 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 feet (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 feet 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, oces) the bottom of heaters shall be
installed no less than 8 feet (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 scaolding, or other objects.
Provisions shall be made to ensure accessibility to suspended tube heaters for recurrent maintenance
purposes.
WARNING
!
California Proposition 65
This product can expose you to chemicals including lead and carbon monoxide, which are known to the
State of California to cause birth defects or other reproductive harm.
For more information, go to www.P65Warnings.ca.gov.
76
REV Series REV 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 •Standards, Certifications, and Government Regulations
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,
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.
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.
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 clearances to combustibles.
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
!
Not For Residential Use. Installation of a commercial tube heater system in residential indoor spaces or
sleeping quarters such as bedrooms or basements may result in property damage, serious injury, or
death.

WARNING
!
Failure to comply with the stated clearances to combustibles may result in
personal injury, property damage, and/or death.
Chart 2.1 • Clearances to Combustibles in Inches
Figure 2.1 • Mounting Configurations
Configuration
Model Number
(Length) - MBH
Sides
Front Behind Top Below End
A, B, C
0°–Dual Pass
REV (20, 30, 40)-65, 75, 100 [N, P] 28 28
2
72
12REV (40, 50)-125, 150 & (60)-150 [N, P] 37 37 81
REV (50, 60)-175, 200 [N, P] 47 47 97
20-Ft. From Burner 11 11 255 12
D
0°–Ultra-Wide
Single Pass
REV (20, 30, 40)-65, 75, 100 [N, P] 18 18
2
72
12
REV (40, 50)-125, 150 & (60)-150 [N, P] 27 27 81
REV (50, 60)-175, 200 [N, P] 34 34 97
20-Ft. From Burner 10 10 255 12
E
35°–Forward
Shield/Open
Throw
REV (20, 30, 40)-65, 75, 100 [N, P] 43 10
4
59
12REV (40, 50)-125, 150 & (60)-150 [N, P] 57 10 76
REV (50, 60)-175, 200 [N, P] 70 15 94
20-Ft. From Burner 22 10 446 12
NOTE: Use high BTU output when determining clearances.
AB
D
C
E E
Side Side Side
Side
Side Side Side
Side
Below Below Below
Below
Top To p To p
Top To p To p
Front Front
Behind Behind
Below Below
98
REV Series REV Series 2.0 Safety •Clearances to Combustibles2.0 Safety •Clearances 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 (50°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 ensure that adjacent
materials are protected from degradation.
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
!
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
Clearances 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, or vapor in the vicinity of
the heater.
• Plastic
• Parked vehicles
• Gasoline
• Storage racks
Combustible items: Moving Objects:
• Wood • Overhead doors
• Paper • Vehicle lifts
• Fabric • Cranes
• Chemicals • Hoists
• Paint
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 marshal, 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

1110
REV Series REV Series 3.0 Installation •Recommended Mounting Heights3.0 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, 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.
3.0 Installation
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)
Chart 3.1 • Recommended Mounting Heights and Coverages
NOTE: This chart is provided as a guideline. Actual conditions may dictate variation from this data.
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
Design Considerations and Prechecks
Placement of infrared heaters is influenced by many factors. Aside from safety factors, considerations such
as the number of heaters or vent elbows that are allowed, maximum vent lengths, ducting of combustion air,
and combining exhaust vents are a few examples. The installation manual, along with national, state, 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 clearances to combustibles situations been observed?
• Is the supply (burner) end of the heater located where more heat is required?
• Is it best to oset the heaters and/or rotate the reflectors towards the heat zone?
• 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 clearances 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 eective 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.
Model BTU Range Recommended Mounting Height (ft.) 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’ 10’ - 20’ 20’ - 40’ 16’
75 MBH 12’ - 20’ 20’ - 30’ 30’ - 50’ 18’
30 ft. 65 MBH 10’ - 16’ 10’ - 20’ 20’ - 40’ 17’
75-100 MBH 12’ - 20’ 20’ - 30’ 30’ - 50’ 20’
40 ft. 65 MBH 10’ - 16’ 10’ - 20’ 20’ - 40’ 20’
75-125 MBH 12’ - 20’ 20’ - 30’ 30’ - 50’ 20’
150 MBH 16’ - 30’ 30’ - 40’ 40’ - 60’ 25’
50 ft. 125 MBH 15’ - 25’ 20’ - 30’ 30’ - 50’ 25’
150-200 MBH 16’ - 30’ 30’ - 40’ 40’ - 60’ 25’
60 ft. 150-200 MBH 17’ - 40’ 30’ - 40’ 40’ - 60’ 25’

1312
REV Series REV Series 3.0 Installation •Heater Suspension and Placement3.0 Installation •Heater Suspension and Placement
16” Burner
Tube
Approx.
8’ 10”
Approx.
9’ 8”
Approx.
9’ 8”
Burner
Control Box
Burner Control Box
Suspension Points
Igniter/
Sensor
Box
4” Tube Clamp
(TP-21B)
(TP-220 SS on
150–200 MBH models only)
4” Tube Clamp (TP-21B)
Hanger (TP-4080)
Installed within 36” of end of tube.
Suspension
Point
Suspension
Point
Suspension
Point
Chart 3.2 • Heater Mounting Requirements and Weights
Figure 3.2 •Heater Mounting Layout
WARNING
!
Heater Suspension and Placement
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 clearances 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.
NOTE: A sticker identifying the combustion chamber(s) is located on the swaged
end of the tube.
2’ 4”
10 ft. Primary Combustion Chamber
NOTE: Type varies depending on model, refer to the
Specification Chart on page 3.
Radiant Emitter Tube
The first 10 ft. tube will utilize 2
hanging tabs spaced approx. 8’ to
10’ apart. Each subsequent tube
will utilize 1 hanging tab.
NOTICE
Model Length Suspension Points/ Hanging Tabs Control Box Suspension Points Shipping Weight Chain Set Qty.
20 ft. 21’-9” / 261” 3 2 265 lbs. 5
30 ft. 31’-5” / 377” 4 2 360 lbs. 6
40 ft. 41’-1” / 493” 5 2 430 lbs. 7
50 ft. 50’-9” / 609” 6 2 525 lbs. 8
60 ft. 60’-5” / 725” 7 2 650 lbs. 9
Suspension of the heater must conform to applicable codes referenced in the Safety section and
these instructions.
1Lay all radiant tubing out in the following order. Position tubes in approximate location (see Figure 3.2).
• 10 ft. primary combustion chamber.
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 an
orange identification sticker located on the swaged end of the tube.
• Radiant emitter tubes.
2Mark locations for hanging points.
NOTE: If the available hanging points do not allow for the recommended spacing then additional hanging
tabs (P/N: TP-4079) may be necessary.
• The spacing between the burner control box mounting brackets and the first suspension point should
be approximately 2’-4”.
• The space between the first two suspension points placed on the first tube, should be approximately
8’-10”.
• The space between suspension points thereafter, one per tube, should be approximately 9’-8”.

1514
REV Series REV Series 3.0 Installation •Available Configurations3.0 Installation •Heater Suspension and Placement
3Prepare mounting surface and, if necessary, weld blocks and/or drill holes (see Figure 3.3).
NOTE: The burner control box and radiant tubes should be in straight alignment and level.
4Fasten beam clamp, screw hook, or other type of suspension anchor to hanging point.
5IF USING CHAINS: Attach and close S-hook (P/N: S-HOOK-SS) and #1 double-loop chain (P/N: THCS-
REV) to anchor. Check that it is securely attached. NOTE:Threaded rod and turnbuckles may be used.
6IF USING GRIPPLE: (P/N: THGHxx) Pass the loop end of the cable through the hook. Thread the other
end through the loop, the locking fastener, the hanger, and back up through the locking fastener. Adjust
to appropriate length. NOTE:Threaded rod and turnbuckles may be used.
7Attach hanging tabs 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.
Figure 3.3 •Mounting the Hangers
5S-Hook and
#1 Double-Loop
Chain
3Wood Beam
3Concrete
Beam
4Beam Clamp 4Screw Hook
5Threaded Rod
and Turnbuckle
3 I-Beam
4Beam Clamp
6Chain 6Chain
3I-Beam
4Screw hook
with Locknut
and Washer
Available Configurations
Before beginning heater installation, it is necessary to determine the desired mounting configuration. Refer to
Clearances to Combustibles and Design Considerations on pages 8–11.
Ultra-Wide, Single Pass
Extension can be on either side.
Wide, Dual Pass
Neutral, Dual Pass Narrow, Dual Pass
Open Throw/35°
The desired suspension material shall have a minimum workload rating of 310 lbs.
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.
NOTICE

1716
REV Series REV Series
2Beginning with first 10 ft. core (with two [2] hangers), insert two (2) 5 ft. wings into core. Position first two
hanging tabs in the sliding track within 36 in. from each end (see Figure 3.5). Raise to desired mounting
height.
3.0 Installation •Tube and Reflector Installation
Tube and Reflector Installation
1After determining mounting locations, begin by fastening all tube hangers to each core (P/N: TP-4020)
using the supplied ⁄”–20 bolts and nuts (two [2] each per hanger), and position the hangers using the
pre-drilled holes in each core (see Figure 3.4). NOTE: The first 10 ft. combustion tube will utilize two (2)
hangers and each subsequent tube will utilize one (1) hanger.
Figure 3.4 •Attach Hangers
Figure 3.5 •Wing Installation
Figure 3.6 •Wing Installation (cont.)
Figure 3.7 •Core Installation
10 Ft. Core
Hanger
Hanger
Hanger
Nut
Bolt
Screw
Screw
Screw
Screw
3.0 Installation •Tube and Reflector Installation
3
Insert one (1) 10 ft. wing into core assembly, ensuring the end of the first wing remains flush with the end
of the core. Refer to Figure 3.6.
Hanging Tab
10 Ft. Core
Hanging Tab
5 Ft. Wing
10 Ft. Wing
10 Ft. Core
5 Ft. Wing
5 Ft. Wing
5 Ft. Wing Connecting
Bracket
Connecting
Bracket
Hanger
Hanger
4Slide one (1) hanging tab into the track of the next core, then slide the core onto the previously installed
wing. Secure cores together using one (1) connection bracket and two (2) #8 screws as shown in Figure
3.7.
5Insert one (1) 10 ft. wing on the opposing side until it is flush with previously installed 5 ft. long wing.
Secure reflector connection brackets in channel on core using two (2) #8 screws as shown in Figure 3.7.

1918
REV Series REV Series
6Repeat Steps 3–5 until all 10 ft. wings are in place. Insert remaining 5 ft. wings. Confirm entire assembly
is level front to back.
7Beginning with combustion chamber, insert swaged end of the radiant tube, seam down, through hanger
#2, then slide the unswaged end back through hanger #1 (see Figure 3.8).
2Secure exhaust end reflector end cap using six (6) #8 self-drilling screws in locations indicated by arrows
in Figure 3.12.
Figure 3.8 •Tube Installation
Figure 3.11 •Winglet Installation
Figure 3.10 •Winglet End View
Figure 3.12 •Ultra-Wide, Single Pass Configuration End Cap
Burner
Box End
10 ft. Combustion
Tube
Swaged EndHanger
#2
Hanger
#1
Insert swaged end of tube
through hanger #2, then
slide unswaged end
through hanger #1.
Figure 3.9 •Tube Connections
Tubes fit snugly together and the tube
clamp is centered over the seam.
Tubes are not fit snugly together
and the tube clamp is not
centered over the seam.
The tube clamp is tight when the
torque is achieved (normally when
seam becomes visible).
Correct Tube Connection Incorrect Tube Connection
8Repeat Step 7 with remaining tubes, ensuring to place loosened tube clamp over swaged end of existing
tube before fitting tubes together. 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. Center tube clamps over the
seam where two radiant tube sections connect (see Figure 3.9).
9Tighten tube clamp bolts to secure. When proper compression is obtained (40–60 ft.-lbs. torque) the tube
seam will create a visible mark on the tube clamp (see Figure 3.9). NOTE: Excessive torque may damage
the tube clamp.
Concave surface
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.
Winglet and End Cap Installation
FOR ULTRA-WIDE, SINGLE PASS CONFIGURATIONS:
1Slide winglets into appropriate reflector wing groove (refer to Figure 3.10). Secure with winglet bracket as
shown in Figure 3.11.
Winglet
Winglet
Insert winglet in
top slot with bend
angled outwards.
Winglet Bend
Bracket
Screw Screw
Connecting
Bracket
3.0 Installation •Tube and Reflector Installation 3.0 Installation •Winglet and End Cap Installation

2120
REV Series REV Series
3.0 Installation •Winglet and End Cap Installation 3.0 Installation •Winglet and End Cap Installation
2Secure exhaust end reflector end cap using six (6) #8 self-drilling screws in locations indicated by arrows
in Figure 3.15.
2Secure exhaust end reflector end cap using six (6) #8 self-drilling screws as shown in Figure 3.18.
Figure 3.13 •Winglet End View Figure 3.16 •Winglet End View
Figure 3.15 •Wide, Dual Pass Configuration End Cap
Figure 3.18 •Neutral Dual Pass Configuration End Cap
FOR WIDE, DUAL PASS CONFIGURATIONS:
1Slide winglets into appropriate reflector wing groove (refer to Figure 3.13). Secure with winglet bracket as
shown in Figure 3.14.
FOR NEUTRAL, DUAL PASS CONFIGURATIONS:
1Slide winglets into appropriate reflector wing groove (refer to Figure 3.16). Secure with winglet bracket as
shown in Figure 3.17.
Insert winglet in
bottom slot with bend
angled outwards.
Insert winglet in top
slot with bend angled
inwards.
Winglet Bend Winglet Bend
Figure 3.14 •Winglet Installation Figure 3.17 •Winglet Installation
Winglet Winglet
Winglet Winglet
Bracket Bracket
Screw Screw
Screw Screw
Connecting
Bracket
Connecting
Bracket

2322
REV Series REV Series
2Secure exhaust end reflector end cap using six (6) #8 self-drilling screws as shown in Figure 3.21.
Figure 3.19 •Winglet End View
Figure 3.21 •Narrow, Dual Pass Configuration End Cap
FOR NARROW, DUAL PASS CONFIGURATIONS:
1Slide winglets into appropriate reflector wing groove (refer to Figure 3.19). Secure with winglet bracket as
shown in Figure 3.20.
FOR OPEN THROW/35° CONFIGURATIONS:
1Determine which side of heater to install winglets. On the ground, connect two winglets together by
overlapping and securing with five (5) evenly spaced #8 self-drilling screws (see Figure 3.22). NOTE:It
may be necessary to drill pilot holes before inserting screws. Repeat for each 10 ft. heater section.
2Slide winglets into appropriate reflector wing groove (refer to Figure 3.23). Secure 10 ft. winglet sections
together with #8 self-drilling screws and connection brackets as shown in Figure 3.24.
Insert winglet in
bottom slot with bend
angled inwards.
Winglet Bend
Figure 3.20 •Winglet Installation
Figure 3.22 •Winglet Assembly
Winglet
Winglet
Bracket
Screw Screw
Connecting
Bracket
Winglet
Screw
Winglet
#8 Self-Drilling
Screw
Winglet Overlap
Pilot Hole
Screw
Screw
Screw
Figure 3.23 •Open Throw/35° Configuration End View
Winglet Overlap
Insert winglet in
bottom slot with bend
angled inwards.
Winglet Bend
3.0 Installation •Winglet and End Cap Installation 3.0 Installation •Winglet and End Cap Installation

2524
REV Series REV Series
3.0 Installation •Winglet and End Cap Installation 3.0 Installation •Burner Control Box Suspension
12.875”
9.625”
Burner Control Box Suspension
Suspending the burner control box must be done in accordance with applicable codes listed in the Safety
section and these instructions.
The burner control box must be in straight alignment with all radiant tubes and level. Contact your local
distributor or the factory to see if your application allows for the rotation of the burner control box.
1Determine the mounting chain locations for hanging the burner control box. NOTE: The desired
suspension material shall have a minimum workload rating of 310 lbs.
2Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.
3Attach S-hook and #1 double loop chain (P/N: THCS-REV) to anchor. Check that it is securely connected.
4
Attach chain assemblies and S-hooks to mounting brackets on the burner control box. Adjust chain lengths
until level and in straight alignment with radiant tubes. Burner sight glass will be visible from the floor.
5
Position burner so that there is a 1” gap between the electrode compartment and end cap.
6
Secure tube clamp as described on page 18.
7
Connect pre-heated air hose to barbs on burner box and end cap.
Figure 3.26 •Burner Control Box Assembly - Side View
Burner Sight Glass
Tube Clamp
Pre-Heated Air
Hose
Burner Control Box
tube is in straight
alignment with 10’
Primary Combustion
Chamber
1
2
3
4
7
6
3Secure exhaust end reflector end cap using six (6) #8 self-drilling screws as shown in Figure 3.25.
Figure 3.25 •Open Throw/35° Configuration End Cap
Extension can be on either side.
Figure 3.24 •Winglet Installation
Screw
Connecting Bracket
Screw
1”

Required Safety Bracing
REV Series heaters include a safety bracing kit. Each 10 ft. section of tube and reflector requires safety
bracing (except where sway bracing is used instead—refer to page 27). To connect safety bracing:
1Screw eyelets into reflector nutserts.
2Extend Gripple®cables to appropriate length and attach to hanging chain with included S-hook as
shown in Figure 27. Crimp S-hook to secure.
3Repeat for each additional suspension point except for the suspension point nearest to burner box, as
shown in Figure 27.
3.0 Installation • Required Safety Bracing
2726
REV Series REV Series 3.0 Installation •Sway Bracing for High Air Movement and Outdoor Applications
Sway Bracing for High Air Movement and Outdoor Applications
For high air movement and outdoor applications, install side restraints (field supplied) to modified safety
bracing to reduce side to side swaying (see Figure 3.28). Side restraints should be installed so that they are
angled at 45° ± 10° and should be placed at every designated suspension point. It may be necessary to add
additional support structures at the ceiling level for the connection of these side suspensions. Apply
longitudinal (forward/backward) bracing (P/N: THGH10-3 or field supplied) at each end of the heater. The
desired suspension material shall have a minimum work load rating of 310 pounds.
Stainless Steel Bulldog
Chain with a Min. Load
Rating of 310 lbs.
Stainless Steel Bulldog
Chain with a Min. Load
Rating of 310 lbs.
Turnbuckle
Safety Gripple®
Safety Gripple®
Sway Bracing
(field supplied)
Sway Bracing
(field supplied)
Sway Bracing
(field supplied)
Safety Gripple®
Crimped S-Hook
Crimped
S-Hook
Crimped
S-Hook
Crimped
S-Hook Crimped
S-Hook
Crimped
S-Hook
Crimped S-Hook
Safety Gripple®Safety Gripple®
Turnbuckle
Turnbuckle
Eyelet Safety Gripple®
S-Hook
Figure 3.28 •Heater with Sway Bracing
Longitudinal
Bracing
(field supplied)
Longitudinal
Bracing
(field supplied)
Figure 3.27 •Heater with Safety Bracing

Final Heater Assembly
Chart 3.3 • Tube Installation Sequence and Bae Location
2928
REV Series REV Series
3.0 Installation •Bae Assembly and Placement
Dierent models and inputs utilize specific bae lengths. Remove all enclosed bae sections from box and
retain with applicable heater. Reference shipping label for proper bae size.
To assemble the baes: (NOTE: Baes may be inserted into the tube while being assembled.)
1Determine the number of baes needed for your model number (refer to Chart 1.1 on page 3).
2Orient the bae tabs at a 90° angle to the bae keyhole (see Figure 3.29).
3Insert one bae tab into keyhole and slide completely to one side until both bae tabs appear in the
keyhole.
4Adjust the tabs to the center of the keyhole and rotate the bae 90° to lock the bae sections together.
5Repeat this process with all remaining bae sections to complete assembly.
Figure 3.29 •Assembling the Baes
Figure 3.30 •Inserting the Baes
To insert the baes:
1Insert baes with the keyhole end first.
2Rotate bae assembly so that it is in the vertical position.
3Slide bae assembly into the last radiant tube section, furthest from the burner control box.
NOTE: Bae assemblies longer than 10 feet will continue to be fed into next tube section.
Bae Assembly and Placement
2
Bae Keyhole Bae Tabs 3 4
Completed Connection
IMPORTANT: Bae assembly must be flush with the end of
the last tube section and in the vertical position.
2
1
3
3.0 Installation •Final Heater Assembly
30 Foot
40 Foot
*
*
*
Burner Control Box
w/16 in. Burner Tube
Key
Primary Combustion
Chamber with Clamp
Radiant Tube
Exchanger with Clamp
Bae Location (Refer to Series Manual
for bae quantity.)
Secure vent material to exchanger with three #8
sheet metal screws. Seal with high temperature
silicone sealant. Do not use tube clamp.
20 Foot
50 Foot
60 Foot
Stainless steel clamp on 150,000 BTU/h models (P/N:
TP-220).
Stainless steel clamp on 150,000 to 200,000 BTU/h
models (P/N: TP-220).
Stainless steel clamp on 150,000 to 200,000 BTU/h
models (P/N: TP-220).

3130
REV Series REV Series
3.0 Installation •Venting •Replacing Existing Equipment
Venting
The REV Series tube heater must be vented as described here to properly direct flue gases from the unit to
the outside atmosphere. The venting can terminate vertically through the roof (up) or horizontally through a
sidewall (sideways).
Follow these guidelines and all applicable codes for all models prior to installing the vent material. Local codes
may vary.
In the absence of local codes:
United States: Refer to NFPA 54/ANSI Z223.1 (latest edition), National Fuel Gas Code.
Canada: Refer to CAN/CGA B149.1 and B149.2 Installation Codes for Gas Burning Appliances.
Replacing Existing Equipment
If the heater is replacing existing equipment and using an existing vent system, inspect the venting for proper
size and horizontal pitch as directed in these instructions and the latest edition of the National Fuel Gas Code,
ANSI Z223.1 (NFPA 54) or CSA B149.1 Installation Code. When an existing Category I heater is removed or
replaced, the original venting system may no longer be sized to properly vent the attached appliances.
Determine that there is no blockage or restriction, leakage, corrosion, or other deficiencies that can cause
hazards. The vent pipe should be corrosion-resistant galvanized steel of a thickness that meets the National
Fuel Gas Code. Minimum thickness for connectors varies depending on the pipe diameter. Never vent the REV
Series with PVC or plastic pipe.
Gas-fired heaters must be vented. A built in power exhauster is
provided. Additional external power exhausters are not required
or permitted.
Insucient ventilation and/or improperly sealed vents may
release gas into the building which could result in health problems, carbon monoxide poisoning, or death.
Improper venting may result in fire, explosion, injury, or death.
WARNING
!
Do not vent this appliance into another heater’s vents or through a masonry chimney.
Do not use dampers in the heater vent pipe.
Single wall vent pipe must not pass through any unoccupied attic, inside wall, concealed space, or floor.
Un-insulated single wall vent pipe must not be used outdoors for venting appliances in regions where
winter design temperature is below freezing.
WARNING
!
If replacing an existing heater, vents may require re-sizing. Improperly sized venting systems
can result in vent gas leakage or condensation. Refer to the National Fuel Gas Code ANSI
Z223.1 (NFPA 54) or CSA B149.1 - latest edition. Failure to follow these instructions can
result in serious injury or death.
WARNING
!
3.0 Installation •General Venting Requirements
General Venting Requirements
The venting system for REV Series heaters may terminate horizontally through a sidewall or vertically through
the roof, and may be individually or commonly vented. Configuration of the vent termination determines the
category type. All model heaters must be installed in accordance with the requirements of this section, as well
as the requirements of its category determination, as described in this manual. To determine your applications
category type, review “Vertical Venting (Category I)” and “Horizontal Venting (Category III)” sections of this
manual.
All REV Series Model Requirements:
• Exhaust vent pipe must be 4 inch nominal size.
• Use vent pipe material that is corrosion-resistant galvanized steel of a thickness that meets the National
Fuel Gas Code.
• Do not exceed a maximum vent length of 20 ft. with two elbows, 25 ft. with one elbow, or 30 ft. with no
elbows.
• Maintain a minimum vent length of 3 feet.
• Maintain a minimum of 12 inches of straight pipe from the flue outlet before any directional changes are
made in the venting system.
• Have all vent pipe seams or connectors sealed with high temperature silicone sealant approved for at
least 550°F (field supplied) and fastened together with at least three (3) corrosion resistant sheet metal
screws (field supplied).
• Maintain a 6 inch clearance around all single wall vent pipe from any combustible materials. For double-
wall type B vent or Duravent PVP venting, follow the vent manufacturer’s clearances to combustibles.
• The equivalent length for a 4 inch 90° elbow is 5 feet.
• Avoid using more than two 90° directional changes in the venting system.
• Suspend and secure all horizontal runs in a manner consistent with local codes and in such a way that
the vent system is supported to prevent sagging.
• Vent termination must maintain a minimum distance of 6 feet from any mechanical air supply inlet.
• The vent terminal must be installed to prevent any blockage by snow and protect building material from
degradation by flue gases.
• Consult NFPA ANSI Z223.1 Gas Vent Termination criteria for vents that terminate on a roof pitch that
exceeds 9:12.
• Canada: Vents must terminate a minimum of 3 feet from a window or door that may be opened, and a
non-mechanical air supply inlet or combustion air inlet into the building.

3332
REV Series REV Series
3.0 Installation •Vertical Venting (Category I)
Vertical Venting (Category I)
An appliance that operates with a non-positive vent static pressure and with a vent gas temperature that
avoids excessive condensate production in the vent is said to be ‘Category I’. The REV Series heater is
considered a Category I appliance if the venting system meets all of the following criteria:
• The vent system terminates vertically (up).
• The length of the horizontal portion of the vent run is less than 75% of the vertical rise length. (e.g.- If the
vertical vent height is 10 feet, the horizontal run is less than 7 ⁄ feet).
• The vent terminates a minimum of 5 feet above the vent connection on the unit.
• Horizontal venting sections of the vent pipe must be installed with an upward slope from the appliance
at a pitch of ⁄ inch per foot.
For vertical vent termination, the venting must comply with all parts of this section, in addition to the
requirements of the general venting.
Category I (Vertical) venting is venting at a non-positive pressure. An appliance vented as a Category I is
considered a fan-assisted appliance and the vent system does not have to be ‘gas tight’. It is recommended
that the venting system is installed with a tee, drip leg, and clean-out cap as shown in Figure 3.31.
Vent Locations and Clearances:
• Separate air intake duct from vent pipe by a minimum of 4 feet by placing vent pipes higher than
adjacent air intake ducts.
• Utilize a listed type B vent termination cap.
• The vent terminal must extend a minimum of 2 feet above the roof.
• Vent caps should be located a minimum of 2 feet away from adjoining structures.
All vertically vented heaters that are Category I must be connected to a chimney or vent complying with a
recognized standard, or lined masonry (or concrete) chimney with a material acceptable to the authority
having jurisdiction. Venting into an unlined masonry chimney is not permitted. Refer to the National Fuel
Gas Code and page 31 of this manual.
Use a listed vent terminal to reduce down drafts and moisture in the vent.
When possible, avoid venting through an unconditioned space. Venting through an unconditioned space
promotes condensation. When venting through an unconditioned space is unavoidable, or if the unit is
installed in an area that is prone to condensation, insulate venting runs greater than 5 feet to minimize the
production of condensation. Inspect for leakage prior to insulating the venting and only use insulation that is
non-combustible with a temperature rating of not less than 550°F. Install a tee fitting at the low point of the
vent system and provide a drip leg with a clean out cap as shown in Figure 3.31.
When venting pipe passes through a combustible interior wall or floor, a metal thimble with a diameter 4 inches
greater than the vent pipe diameter must be used. If there is 6 feet or more of vent pipe prior to passing
through the combustible wall or floor, then the metal thimble need only be 2 inches greater than the vent pipe
diameter. If a metal thimble is not used, all clearances to combustibles from the vent pipe must be 6 inches.
When permitted, type B vent or Duravent PVP venting may be used for the last section of vent pipe to reduce
the required clearances to combustibles when passing through a combustible wall or floor. When using type B
vent or Duravent PVP venting, follow the manufacturer’s recommended clearances to combustibles. Any
material used to close or insulate the opening must be non-combustible.
3.0 Installation •Vertical Venting (Category I)
Figure 3.31 •Rooftop Venting - Side View
*Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12
24 in.
Min.*
Double-Wall B Vent
Roof*
Heater
1 in. Minimum Clearance -
Use Attic Insulation Shield
(Field Supplied)
Fire Stop Spacer
#8 Sheet Metal Screws (field supplied)
Adjustable Roof Flashing
Storm Collar
B to C Adapter
Clean Out Tee Fitting or Alternate
Single-Wall Vent Elbow
Vent Cap
Clean Out Cap

3534
REV Series REV Series
3.0 Installation •Horizontal Venting (Category III)
Horizontal Venting (Category III)
An appliance that operates with a positive vent static pressure and with a vent gas temperature that avoids
excessive condensate production in the vent is said to be “Category III”. The REV Series heater is
considered a Category III appliance if the venting system meets all of the following criteria:
• The vent system terminates horizontally (sideways).
• The vent terminates vertically, but the length of the horizontal portion of the vent run exceeds 75% of
the vertical rise length. (e.g. If the vertical vent height is 10 feet, the horizontal run is greater than 7 ⁄
feet).
• The vent terminates below 5 feet of the vent connection on the unit.
• Horizontal venting sections of the vent pipe must be installed with a downward slope from the appliance
at a pitch of ⁄ inch per foot.
Vent enclosed spaces and buildings according to the guidelines in this manual and applicable national,
state, provincial, and local codes.
The venting system must be provided by the installer and should be comprised of single-wall venting
materials with a thickness of no less than 26 gauge. All joints must be sealed with a high temperature
silicone sealant approved for at least 550°F using a minimum bead of ⁄” x ⁄”, and fastened with at least
three corrosion resistant #8 sheet metal screws evenly spaced.
One continuous section of double-wall B vent or Duravent PVP vent may be used to pass through a
combustible wall or barrier, or the installer may continue to use single-wall vent provided a combustible wall
thimble is used which provides adequate clearances to combustibles.
All horizontal Category III vents must be terminated with a Simpson-Duravent sidewall vent cap (P/N:
SWD-4 for 4” venting).
IMPORTANT! Once all silicone sealant has fully cured according to manufacturer’s instructions, the
installer must perform a leak test on the complete venting system. A solution of soap and water may be
used to test the venting inside the occupied space. Once the installer has verified the venting system is
completely sealed and free of leaks, the heater may be placed into operation.
3.0 Installation •Horizontal Venting (Category III)
Vent Locations and Clearances:
• Vent must terminate a minimum of 4 feet below, 4 feet horizontally from, or 1 foot above any window or
door that may be opened or gravity air inlet into the building.
• Vent must terminate a minimum of 3 feet above any forced air inlet that is located within 10 feet.
• The bottom of the vent terminate must be located a minimum of 12 inches above grade level and must
extend beyond any combustible overhang. Vents adjacent to public walkways must terminate a
minimum of 7 feet above grade level.
• The vent cap must be a minimum of 6 inches from the sidewall of the building.
• Vent must be a minimum of 36 inches below or extend beyond any combustible overhang.
Never join two sections of double wall vent pipe within one horizontal vent system as it is impossible to verify
that inner pipes are completely sealed.
*Vent must extend beyond any combustible overhang if the vent is less than 36 in. below the combustible overhang.
Building Overhang*
Sidewall
Double-Wall B
Vent
Single-Wall
Vent
Wall Thimble
Sidewall Vent Cap
6 in.
min.* B to C Adapter
Heater
⁄ in. downward
pitch per foot
36 in.
min.*
Figure 3.32 •Sidewall Venting Requirements

3736
REV Series REV Series
3.0 Installation •Common Venting (Category I)
Common Venting (Category I)
The common vent system and all attached appliances must be Category I and must be on the same control
device.
The vent connector should be routed in the most direct route from the units to the common vent.
Where two or more vent connectors enter a common gas vent or chimney flue, the smaller connector shall
enter at the highest level consistent with the available head room or clearance to combustible material.
Restrictions within the common vent such as elbows should be minimized. Each elbow installed within the
common portion of the vent carrying system reduces the maximum common vent capacity by 10%. Refer to
NFPA 54 for capacity.
The vent connector capacities allow for the use of two 90° directional changes. For each additional required
elbow, the vent connector capacity is reduced by 10%.
The common vent cross sectional area must be equal to or greater than the largest vent connector cross
sectional area.
Figure 3.33 •Common Rooftop Venting - Side View
**Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12.
Rooftop Vent Cap
Roof
Dual Exhaust Assembly
Heater
Firestop Spacer
Double-Wall B Vent
24 in.
Min.**
Heater
Single-Wall Vent Pipe
Single-Wall
Vent Pipe
Use Attic Insulation Shield
(Field Supplied)
3.0 Installation •Common Venting (Category III)
Figure 3.34 •Common Sidewall Venting - Top View
Double-Wall B Vent
Heater
Heater
Dual Exhaust Assembly
Sidewall
Sidewall Vent Cap
Wall Thimble
B to C
Adapter
Single Wall Vent
6 in.
Min.
Common Venting (Category III)
• A staggered arrangement or a dual exhaust assembly (P/N: Y) must be used when joining two heaters to
a common vent so that by-products of one heater do not flow into the adjoining vent of the other heater.
• A Category III appliance may be common vented only if the appliances are on the same control device
so that they may only be operated at the same time to prevent the backflow of exhaust gases into a
non-operational appliance. The venting system must follow all guidelines for Category III venting as
listed on pages 34–35.
• The vent connector should be routed in the most direct route from the units to the common vent.
• Where two or more vent connectors enter a common gas vent or chimney flue, the smaller connector
shall enter at the highest level consistent with the available head room or clearance to combustible
material.
• Restrictions within the common vent such as elbows should be minimized. Each elbow installed within
the common portion of the vent carrying system reduces the maximum common vent capacity by 10%.
Refer to NFPA 54 for capacity.
• The vent connector capacities allow for the use of two 90° directional changes. For each additional
required elbow, the vent connector capacity is reduced by 10%.
• The common vent cross sectional area must be equal to or greater than the largest vent connector cross
sectional area.

3938
REV Series REV Series
3.0 Installation •Optional Unvented Operation
Figure 3.35 •Minimum End Clearances
12 in. Min.
All heaters
Optional Unvented Operation
12 in. Min.
Unvented heaters
When using an unvented configuration (commercial & industrial use only), consider the following:
• A factory vent cap/diuser (P/N: WVE-GALV) must be used.
• Where unvented heaters are used, natural or mechanical means must be provided to supply and
exhaust a minimum of 4 CFM/1,000 BTU/h input of installed heaters.
NOTE: Gravity or mechanical means may be used to accomplish the air displacement. Local codes
may require that the mechanical exhaust system be interlocked with the electrical supply line to the
heaters, enabling both to function simultaneously.
• The minimum clearance between the air intake and the exhaust terminal is 4 feet.
• Exhaust openings for removing the flue products must be located above the level of the heater(s).
WARNING
!
Not for residential use. The use of unvented tube heaters in residential indoor spaces may
result in property damage, serious injury, or death. Use unvented operation in commercial and
industrial installations with proper ventilation rates only.
3.0 Installation •Combustion Air Requirements
Combustion Air Requirements
Combustion air may be supplied to the heater by indoor or outdoor means. Follow these guidelines and all
applicable codes for all models prior to installing the combustion air duct work. Local codes may vary. In the
absence of local codes, refer and comply with the National Fuel Code ANSI Z223.1 (NFPA 54) latest edition
or the National Standards of Canada.
This unit comes standard equipped for connection of supplied outdoor air for combustion. It is designed for
outside air to be brought into the appliance from combustion intake ducts, and is referred to as a “separated
combustion” appliance.
This heater must operate as a separated combustion system if any of the following criteria apply:
• Chemicals such as chlorinated or fluorinated hydrocarbons (typical sources are refrigerants, solvents,
adhesives, degreasers, paints, paint removers, lubricants, pesticides, etc.) are present in the
atmosphere.
• High humidity.
• Contaminants such as sawdust, welding smoke, etc.
• Negative building pressure.
• Unusually tight construction where the air infiltration rate is less than 0.40 air changes per hour.
If your application does not meet any of these criteria, then room air may be used as supplying combustion air
to the heater. Refer to ‘Combustion Air Supply - Room Air’ on page 41 for details on how to utilize room air for
combustion.
Sucient combustion air must be supplied to the appliance at all times.
Lack of combustion air may result in property damage, serious injury, or death.
WARNING
!
Roof
Roof Intake Cap
18 in.
minimum 6” pipe
Air Inlet Connection (Flexible boot and band
clamps are recommended)
Air Inlet Connection
Burner
Control Box
Burner
Control Box
4” intake pipe4” intake pipe
Figure 3.36 •Vertical Outside Air Supply for Common Intake - Side View
NOTE: Common intake
heaters must share the
same thermostat.