Detroit Radiant Products AVD 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 thermostats or in the absence of such thermostats, in a conspicuous location.
Not for residential use! Do not use this heater in the home, sleeping quarters,
attached garages, etc. Installation of a commercial tube heater system in residential
indoor spaces may result in property damage, serious injury, asphyxiation or death.
AVD Series
Installation Manual
The AVD Series Infrared Tube Heater is a negative pressure, two-stage radiant heater system. This
manual provides specific information related to the AVD Series model. 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.
Keep these instructions for future reference.
LIOAVD-8/10 (DRP)

AVD Series
Contents
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Overview ............................................................3
Heater Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications ........................................................3
Safety Labels and Their Locations ........................................4
2.0 Safety . . .................................................................6
Warning Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Applications..........................................................7
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
Application Guidelines..................................................11
Heater Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Heater Mounting Requirements and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Heater Assembly......................................................13
Preparing Points for Hanging ............................................14
Hanging Pre-Assembled Unit ............................................16
Venting..............................................................18
Combustion Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Electrical Requirements and Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.0 Operation ................................................................32
Lighting Procedures....................................................32
Sequence of Operation.................................................33
5.0 Maintenance ..............................................................34
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Heater Components and Parts List........................................38
Routine Inspection.....................................................40
Maintenance Log......................................................41
Limited Warranty Terms and Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Kit Contents Check List.................................................44
2
1.0 Introduction • Table of Contents

1.0 Introduction
AVD Series
Overview
The intent of this manual is to provide information regarding safety, design guidelines, installation,
operation and maintenance of the radiant heater. You must read and understand the instructions and all
safety warnings before installing the radiant heater.
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 components included with your
tube heater. Refer to page 44 for a list of the kit contents for your Series 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.
3
Model Number Gas Type
BTU/h
Low Fire*
BTU/h
High Fire*
Recommended
Mounting
Heights** Unit Weight
Overall Unit
Length
AVD-60N Natural Gas 40,000 60,000 6 to 9 ft. 103 lbs. 107”
AVD-60P Propane 40,000 60,000 6 to 9 ft. 103 lbs. 107”
AVD-80N Natural Gas 50,000 80,000 6 to 9 ft. 103 lbs. 107”
AVD-80P Propane 50,000 80,000 6 to 9 ft. 103 lbs. 107”
Specifications
Chart 1.1 • AVD Series Specifications
* Input at full rate.
** Recommended mounting heights are provided as a guideline. Actual conditions may dictate variations from
this data.
Shipping / Boxing:
B = Burner Box (15#) & (31.5”L x 17.5”W x 15.5”H)
T = Large Tube Box (88#) & (91”L x 31”W x 14”H)
NOTE: See Kit Contents on page 44.
1.0 Introduction • Overview • Heater Components • Specifications

WARNING
!
Rear Panel
F/N: LL01 - Clearance Safety Tag
(Affix adjacent to heater’s thermostat)
Rating Plate
F/N: LLTB036
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI
RE-VERBER-RAY INFRA-RED RADIANT TUBE HEATER
FOR INDOOR (Non-Residential) INSTALLATION ONLY.
Class IIIA Permanent Label
NOT FOR RESIDENTIAL USE
[phone] - www.drp-co.com
Line Voltage:
Control Voltage:
AMPS - Starting:
AMPS - Running:
120V - 60Hz
24V - 60Hz
1.5
1.1
Manifold Pressure:
Maximum Inlet Pressure:
Minimum Inlet Pressure:
Serial No.: 1001DETRXXXXXXXXX 0001
MODEL NO.
AVD - 80P
Heater Type
Version:
C1
3/10
INPUT BTU/H
80,000 / 60,000
FOR USE WITH
Propane Gas
10.0 Inches
14 Inches
11.0 Inches
W.C.
W.C.
W.C. Warning!
Unit must be
mounted level
SERVICE ACCESS PANEL
1. Turn off gas & electricity.
2. Remove service access panel screws.
3. Slide panel downward.
SAMPLE
F/N: LLTB018 (Natural Gas)
F/N: LLTB019 (LP Gas)
LLTB014-5M-7/06 (ID)
Avoid Equipment Failure.
Do Not Rotate
Burner Assembly.
Mount Level
!
INSTALLER
F/N: LLTB014
Mount Level
SERVICE ACCESS PANEL
FAN, BURNER & IGNITER COMPARTMENT
1. Turn off gas & electricity.
2. Remove 1/4 inch sheet metal screws.
3. Remove cover by lifting top.
CAUTION: HOT SURFACE.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
F/N: LLTB035
(Located on top panel)
F/N: LLAC
Air Metering Orifice
Air Metering Orifice
DO NOT REMOVE TP-3014 3"
SAMPLE
AVD Series
1.0 Introduction • Safety Labels and Their Locations
Safety Labels and Their Locations
Safety warning labels must be maintained on the tube heater and should be replaced if they become
illegible. Contact either your local distributor or the product manufacturer for obtaining replacement signs
or labels.
It is important to provide warnings to alert individuals to potential hazards and safety actions. In locations
used for the storage of combustible materials, ANSI Z83.20b and CSA 2.34 require a placard to be
posted “specifying the maximum permissible stacking height to maintain the required clearances from the
heater to the combustibles” near the heaters thermostat or in absence of such thermostats in a
conspicuous location. Contact Detroit Radiant Products or an authorized dealer for Clearance Safety Limit
Signs or for Clearance Safety Limit Tags (one tag is provided with each heater).
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, serious injury or death. Read and understand, the installation,
operating and maintenance instructions thoroughly before installing or servicing this
equipment. Only trained, qualified gas installation and service personnel may install or
service this equipment.
4

Burner Control Box Component
Label (located inside the center
compartment lid)
AVD - 80P
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:
For parts replacement information, contact factory at 586-756-0950 or visit www.drp-co.com/parts.
Serial No.: 1001DETRXXXXXX 0001
Gas Valve:
Circuit Board:
Wire Harness:
Diff Switch:
Diff VL Orifice:
Igniter:
Burner:
Ind. Lights:
Diag. Light:
Transformer:
Fan:
Alt. Fan:
Alt. Fan Usage:
Relay:
Filter:
24 Volt In:
120 Volt In:
Gas In:
Extra VL Orifice:
Production Code:
Version:
Stock:
Add-On:
Internal Use Only:
HEATER
TYPE: ID:
Tag:
Electric:
Special 1:
Special 2:
Gas:
Air:
C1
C1 C2 C3
None
N/A
AVD-80
3/10
VR9206Q-1028
Fenwal 35-62
Harness
IS22025051F5127
Grey (= / - )
Electrode
Beckett 3DOT
NONE
NONE
40 VA
(Specify TP-#’s)
6041
6051
6035
1254A
3055
6073
N/A
N/A
825
Bay Motor
120V - 60Hz
When Specified
HLRP
NONE
Yellow
Black Cord
7/8” FC Flare
NONE
6015
E
1215
1325
N/A
934
933
83
49
1
TP-204#
TP-3014#
-
-
Re-Verber-Ray
None
-
-
LLWT600
Orifice Type:
Right Panel Left Panel
F/N: LLLOGO11
Logo Label
F/N: LLAC
Air Metering Orifice
Air Metering Orifice
DO NOT REMOVE TP-3014 3"
SAMPLE
F/N: LLV3EP2
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
F/N: LLV3EP1
Electrical Label
(Located inside right panel)
F/N: LLTCL013: Clearance to
Combustibles and Gas Data Label F/N: LLV2EP9
AVD Series 1.0 Introduction • Safety Labels and Their Locations
5
V1
V2
NC
W (24V IN)
S1
S2
(24V IN) R
GND
GND
DIAGNOSTIC
LIGHT
24VAC
(FIELD SUPPLIED)
120V/24V
TRANSFORMER
LOW FIRE
RELAY
TWO-STAGE
GAS VALVE SPARK IGNITORS
FLAME SENSOR
PRESSURE
SWITCH
HIGH FIRE
RELAY
FLAME SENSOR
LINE VOLTAGE
120VAC 60Hz NEUTRAL
Y
BKBK
BK
O
BL
OO
PR
PR
Y
R
GY
Y
Y
W
G
BK
BK
BL
W
GY
G
W
BLOWER
MOTOR
HIGH FIRE LOW FIRE
BK BK
BK
+
COM
NO
NC
COM
NO
NC
AVD Series Internal Block Wiring Diagram

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.
6
AVD 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.
CAUTION
!
2.0 Safety • Warning Symbols
2.0 Safety
Warning indicates a potentially hazardous situation
which, if not avoided, could result in death or injury.
Caution indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury.
Notice indicates a potentially hazardous situation
which, if not avoided, could result in property
damage.
NOTICE
WARNING
!
CAUTION
!
WARNING
!
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, serious injury or death. Read and understand, the installation,
operating and maintenance instructions thoroughly before installing or servicing this
equipment. Only trained, qualified gas installation and service personnel may install or
service this equipment.

Standards, Certifications and Government Regulations
Installation of this tube heater must conform with all applicable local, state and national specifications,
regulations and building codes. Contact the local building inspector and/or fire marshall for guidance.
In the absence of local codes, the installation must conform to the latest edition of:
United States: National Fuel Gas Code, ANSI Z223.1 (NFPA 54).
Canada: CAN/CGA B149.1 and .2, Canadian Electrical Code C22.1
AVD Series
Not For Residential Use. Installation of a commercial tube heater system in residential indoor spaces
may result in property damage, serious injury or death.
2.0 Safety • Applications • Standards, Certifications and Regulations
7
WARNING
!
Applications
This is not an explosion proof heater. No tube heater may be used in a Class 1 or Class 2 Explosive
Environment. Consult your local fire marshall, insurance carrier and other authorities for approval if the
proposed installation is in question.
Agricultural Applications
Unless otherwise indicated, tube heaters are designed and certified for use in agricultural buildings,
such as poultry houses, dairy parlors and swine houses. 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.

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 vapors in
the vicinity the heater.
AVD Series
Combustible/Degrating Items:
• Wood
• Paper
• Fabric
• Chemicals
• Paint
• Parked vehicles
• Gasoline
• Storage racks
8
2.0 Safety • Clearance to Combustibles
Clearance to Combustibles
• Tri-ply
• Vinyl banding
• Plastics
• Fogger lines
• Flexible gas lines
• Auger lines
• Feed pans/lines
• Drinker nipples/nylon lines
When installing the radiant 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.
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.
A critical safety factor to consider before installation is the clearances to combustibles. Clearance to
combustibles
is defined as the minimum distance you must have between the tube surface, or reflector,
and the combustible item
. Considerations must also be made for moving objects around the tube heater.
The following is a partial list of items to maintain clearances from:
• Vehicle parking areas
• Vehicles with lifts or cranes
• Storage areas with stacked materials
• Lights
• Sprinkler heads
• Overhead doors and tracks
• Dirty or contaminated environments
• 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
Common Hazards:
For maximum safety the building must be evaluated for hazards before installing the heating system.
Examples include, but are not limited to:
Moving Objects:
• Overhead doors
• Vehicles & vehicle lifts
• Cranes
• Hoists
• Catching machine
• Trailers

Model Number Top Sides Below Back End
AVD-60 [N, P] 10 36 40 6 12
AVD-80 [N, P] 10 36 40 6 12
Chart 2.1 • Clearance to Combustibles in Inches (see Figure 2.1)
Figure 2.1 • Clearance to Combustibles
WARNING
!
Failure to comply with the stated clearances to combustibles may result in
personal injury, property damage and/or death.
Failure to mount the appliance level may result in personal injury, property
damage and/or death.
Mount Heater Level
- Side to Side -
END VIEW
SIDE VIEW
AVD Series
9
2.0 Safety • Clearance to Combustibles
Side Side
Below
Top
End
Below
Top
Back

AVD Series
10
WARNING
!
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, serious injury or death.
Read and understand, the installation, operating and maintenance instructions
thoroughly before installing or servicing this equipment.
Only trained, qualified gas installation and service personnel may install or service
this equipment.
Design Considerations and Prechecks
Placement of infrared heaters is influenced by many factors. Aside from safety factors, considerations
such as the number of heater or vent elbows that are allowed, maximum vent lengths, ducting of
combustion air and combining exhaust vents are a few examples. All installation manuals, along with
national, state, provincial and local codes, address these issues. It is critical that you read, understand
and follow all guidelines and instructions.
To ensure a properly designed heating system, a layout should be developed for the correct placement of
the heating appliance, vents and combustion air intake ducts. Inspect and evaluate the mounting
conditions, vent locations, gas supply and wiring.
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.
3.0 Installation
3.0 Installation • Design Considerations and Prechecks
CAUTION
!

AVD Series
11
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, or very high ceilings may result in the heaters
being mounted outside of the factory 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 No.
Input
BTU/h
Recommended
Mounting Height (ft.)
Approximate Coverage Area
(LxW)
AVD-60 [N,P] 60,000 5 to 8 30 x 45
AVD-80 [N,P] 80,000 6 to 9 40 x 60
3.0 Installation • Recommended Mounting Heights and Coverages • Application Guidelines
Figure 3.1 • Application Guidelines
For houses 400 feet long by 40 to 50 feet wide
Brood End Non-Brood End
For houses 500 feet long by 40 to 50 feet wide
Brood End Non-Brood End
For houses 600 feet long by 50 to 66 feet wide
Brood End Non-Brood End
Chart 3.2 • Heater Spacing*
* Layouts may vary depending on house style, size and climate.
House Length House Width
Distance from End
Wall and from Curtain
Distance
Between Heaters
400 Feet 40 to 50 Feet Brood End 15 Feet 34 Feet
Non-Brood End 40 Feet 60 Feet
500 Feet 40 to 50 Feet Brood End 15 Feet 37 Feet
Non-Brood End 35 Feet 60 Feet
600 Feet 50 to 66 Feet Brood End 15 Feet 49 Feet
Non-Brood End 30 Feet 40 Feet

AVD Series
Heater Packaging
3.0 Installation • Heater Packaging
Heaters are made up of three pieces shipped in two boxes; the burner control box in the first box and the
emitter assembly and reflectors in the second box (see Figure 3.2).
Figure 3.2 • Heater Packaging • 2 Pieces
12
Burner Control BoxEmitter Tube Assembly
Chart 3.3 • Heater Mounting Requirements and Weights
Model
Dimension
Straight
Configuration Suspension Points Shipping Weight Chain Set Qty.
AVD-60 [N,P] 107” 3 103 lbs. 3
AVD-80 [N,P] 107” 3 103 lbs. 3
NOTE: AVD Series heater ships as two packages; burner box and tube & reflector package.
Shipping Dimensions:
B = Burner Box (15#) & (31.5”L x 17.5”W x 15.5”H)
T = Large Tube Box (88#) & (91”L x 31”W x 14”H)
NOTE: See Kit Contents on page 44.
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.

4
AVD Series
13
3.0 Installation • Heater Assembly
Assembly prior to hanging: With this method, the use of two saw horses or a raised table or bench
surface is beneficial (the emitter assembly box may also be used).
Lay the emitter assembly (TP-6082) across the horses or bench with the exchanger connection
hanging bracket (TP-6079) extended out over the edge (See Figure 3.3) NOTE: Use of the foam
shipping blocks will help protect the emitter coating.
Install the tube flange gaskets (TP-6021B) over the ends of the emitter to the emitter plates.
Align the nine (9) burner head studs with the eight (8) holes located in the emitter plates and the one
(1) hole in the exchanger connection hanging bracket.
Install nine (9) 5/16 - 18 lock nuts provided, tightening evenly and torque to 20 ft-lb.
Install eight (8) reflector supports - two (2) per tube (TP-6078) 12 to 18 inches in from the burner head
and 12 to 18 inches from the reflector end assembly.
Install ONLY the two lower reflectors (TP-6088). Install U-bend end of the reflector first then adjust
to a 45° angle.
Install vent pipe (TP-6075) and secure with three (3) #8 sheet metal screws (provided).
Install the remaining two (2) reflectors (TP-6088). Install U-bend end of the reflector first then
adjust to a 45° angle.
Install 4” cap with flapper (WVE-GALV) and secure with three (3) #8 sheet metal screws (provided).
1
2
3
4
5
6
7
8
9
Reflector Assembly
(TP-6088) x2
Reflector Assembly
(TP-6088) x2
Vent Cap
(WVE-GALV)
Vent Pipe
(TP-6075)
12-18”
12-18”
Control Box
Exchanger Connection
Hanging Bracket
(TP-6079)
Tube Flange
Gasket
(TP-6021B)
Figure 3.3 • Heater Assembly
Heater Assembly
Emitter Assembly
(TP-6082)
Emitter Plates

AVD Series
Transfer the heater’s three hanging locations to the ceiling where the unit is to be installed and mark
hanging points.
Prepare mounting surface. If necessary attach additional support blocks and drill holes (Figure 3.5).
Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.
Attach and close S-hook (P/N: S-HOOK) and #1 double-loop chain (P/N: AV-CS) to anchor. Check
that it is securely attached. NOTE: Threaded rod and turnbuckles may be used.
NOTE: The unit must be in straight alignment and level. Adjust chain lengths until radiant tubing is
level and equal weight distribution is achieved. Chains must be straight up and down. Do not install
chains at an angle as this can result in tube warpage or separation.
14
3.0 Installation • Heater Assembly • Preparing Points for Hanging
1
4
3
2
Preparing Points for Hanging
Install reflector angle
limit brackets
Figure 3.4 • Final Heater Assembly

AVD Series
15
3.0 Installation • Preparing Points for Hanging • Hanging Types
Figure 3.5 • Hanging Types
Wood
Beam
I-Beam
I-Beam
Concrete
Beam
Support
Blocking
Support
Blocking
Screw Hook
S-Hook and #1
Double-Loop Chain
Beam Clamp
S-Hook and #1
Double-Loop Chain
Beam Clamp
Threaded Rod and
Turnbuckle
Turnbuckle

AVD Series
16
3.0 Installation • Hanging Pre-Assembled Unit
Figure 3.6 • Hanging the Heater
When hanging the pre-assembled unit, special attention must be paid to the reflectors to keep from
damaging or changing the 45° angle.
Raise the assembled unit from assembly station to prepared hanging location. NOTE: This can be
done manually or with a winch system.
Attach two chains to exchanger connection hanging bracket (TP-6079). Secure S-hooks.
Attach the third chain located furthest from the gas and electrical connections to the reflector end
assembly (TP-6089) and secure S-hook.
Raise or lower the unit to desired mounting height.
1
4
3
2
Hanging Pre-Assembled Unit
TP-82 (typ. 4) set at
45° from horizontal.

AVD Series
17
3.0 Installation • Hanging Pre-Assembled Unit • Final Check List
81”13.25” 6.25”
12.75”11.5”7” 7”
IMPORTANT: All reflectors must be
installed at a 45° mounting angle from
horizontal as shown.
45°
12.75”
Figure 3.7 • Hanging the Heater (Side View)
Figure 3.8 • Hanging the Heater
(Burner Box End View)
Mount Heater Level
- Side to Side -
Mount Heater Level
- Side to Side -
45°
Figure 3.9 • Hanging the Heater
(Exhaust End View)
Final Check List
Check the unit for level across the length (Figure 3.7).
Check the unit for level across the width (Figure 3.8).
Check reflectors to be at a 45° angle from horizontal (Figure 3.9).
Check location of reflector supports.
1
3
2
TP-82 (typ. 4)
set at 45° from
horizontal.
12-18”
12-18”
1
4
3
2

AVD Series
18
3.0 Installation • Venting
Venting
WARNING
!
Insufficient 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.
Seal vent pipes with high temperature sealant and three (3) #8 sheet metal screws.
Vent enclosed spaces and buildings according to the guidelines in this manual and
applicable national, state, provincial and local codes.
This tube heater must be vented in accordance with the requirements within this manual and all applicable
codes for all models, prior to installing 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.
The heating system may operate either vented or unvented. Venting can terminate through the sidewall
(horizontal) or the roof (vertical) and be individually or commonly vented.
Venting Requirements
• 4 in. single wall 26 gauge (min.) galvanized steel vent pipe or Dura/Connect single wall flexible
exhaust vent must be used.
• Maximum vent length for all models is 30 ft. (9 m).
• Single wall galvanized vent pipe must be insulated in cold environments.
• Seal single wall vent with high temperature sealant (field supplied)and three (3) #8 sheet metal
screws (field supplied).
• Do not use more than two 90° elbows in the exhaust vent.
• To maintain clearances to combustibles, the use of an approved wall or roof thimble and double-
wall Type B-vent is required for the portion of vent pipe that runs through combustible material in
the building wall or roof (see Figures 3.11 - 3.14).
• Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12.
1
4
3
2

AVD Series
19
3.0 Installation • Venting • Unvented Operation
When using an unvented configuration (commercial & industrial use only), consider the following:
• A factory supplied vent cap/diffuser (P/N: WVE-GALV) must be used.
• Where unvented heaters are used, natural or mechanical means must be provided to supply
adequate ventilation - a minimum of 4 cfm/1000 BTU/h (0.38 m3/kW) 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.
• Exhaust openings for removing the flue products must be located above the level of the
heater(s).
• Use of combustion air intake.
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.
Unvented Operation
Figure 3.10 • Minimum End Clearances
12 in.
Min.

AVD Series
20
3.0 Installation • Venting • Sidewall Venting
Figure 3.11 • Sidewall Venting Requirements
Building Overhang**
Sidewall
Double-Wall
B-Vent
Single
Wall Vent
Wall Thimble
Sidewall Vent Cap
6 in.
min.**
B to C Adapter
Heater
1/4 in. downward
pitch per foot
Sidewall Venting
Guidelines:
Vent Pipe Angle
• To prevent moisture from entering the heater system, slope the vent pipe down toward the outlet
1/4 in. per foot of length. Do not pitch the heater.
• **Vent must extend beyond any combustible overhang if the vent is less than 36 in. below the
combustible overhang.
36 in.
min.**
Vent Termination
United States:
• Vent must terminate a minimum of 4 ft. (1.2 m) below, 4 ft. (1.2 m) horizontally from, and 1 ft.
(30 cm) above any window or door that may be opened or gravity air inlet into the building.
• Vent must terminate a minimum of 3 ft. (.9 m) above any forced air inlet that is located within
10 ft. (3.1 m).
• The bottom of the vent terminal must be located a minimum of 12 in. (30 cm) above grade level
and must extend beyond any combustible overhang. Vents adjacent to public walkways must
terminate a minimum of 7 ft. (2.1 m) above grade level.
• The vent terminal must be installed to prevent blockage by snow and protect building materials
from degradation by flue gases.
• The vent cap must be a minimum of 6 in. (15.2 cm) from the sidewall of the building.
• Vent must be a minimum of 36 in. below or extend beyond any combustible overhang.
Canada:
• Vents must terminate a minimum of 3 ft. (.9 m) from a window or door that may be opened, and
non-mechanical air supply inlet or combustion air inlet into the building.
• Vents must terminate a minimum of 6 ft. (1.8 m) from a mechanical air supply inlet.