Detroit Radiant Products AG1 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.
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.
AG1 Series
Insert Manual
For complete installation instructions, see the Tube Heater General Manual
that accompanies this Series Insert Manual.
The AG1 Series Infra-Red Tube Heater is a positive pressure, single-stage radiant heater system. This
insert manual is a supplement to the Tube Heater General Manual and provides specific information
related to the AG1 Series model. All persons involved with the installation, operation and maintenance of
the heater system must read and understand the information in this insert manual and the accompanying
Tube Heater General 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.
F/N: LIOAG1a-3M-7/07a (DRP)
Replaces F/N: LIOAG1-2/06

Contents
1.0 Safety...................................................................3
SafetyLabelsandLocations............................................3
ClearancetoCombustibles.............................................4
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ElectricalRequirements ...............................................7
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Specifications ......................................................10
TubeInstallationSequence............................................11
3.0 Operation ..............................................................12
SequenceofOperation...............................................12
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Operational Indicator LIghts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.0 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.0 Parts ..................................................................18
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
PartsList..........................................................18
KitContentsCheckList...............................................20
Approvals..........................................................20
LimitedWarranty....................................................20
NOTE: See page 10 for a list of available models and specifications.
2
AG1 Series

1.0 Safety
Manifold Pressure
Max.Inlet Pressure
Min.Inlet Pressure for
Purpose of Input Adjustment
Min.Mounting Angle
Max.Mounting Angle
Combustion Chamber
W.C.P.
W.C.P.
W.C.P.5.0in.
14.0in.
3.5in.
0 DEGREES
45 DEGREES
4”BC Aluminized
120V
4.8
1.1
C1
VOLTSAC 60Hz
AMPS - Starting
AMPS - Running
HeaterType:
DESIGN COMPLIES WITH:
ANSIZ83.20b-2003-GASFIREDLOWINTENSITYINFRA-RED HTR.
ForStainlessSteel Upgrades the Combustion Table is upgraded to 409 Stainless Steel
Serial No.0603DETR12345 0001
DETROITRADIANT PRODUCTS CO.
21400HOOVERROAD- WARREN, MI 48089
[phone] www.reverberray.com
AG1- 40 - 125N
MODEL NO.
125,000
INPUT BTU/H
NATGAS
FOR USE WITH
RE-VERBER-RAYINFRA-RED RADIANT TUBE HEATER
FORINDOOR INSTALLATION ONLY
NEUTRAL
EARTH
HOT
- 120V HEATERINPUT -
120V
Manifold Pressure
Max. Inlet Pressure
Min. Inlet Pressure for
Purpose of Input Adjustment
Min. Mounting Angle
Max. Mounting Angle
Combustion Chamber
W.C.P.
W.C.P.
W.C.P.
5.0in.
14.0in.
3.5in.
0 DEGREES
45 DEGREES
4” BC Aluminized
120V
4.8
1.1
C1
VOLTS AC 60Hz
AMPS - Starting
AMPS - Running
Heater Type:
DESIGN COMPLIES WITH:
ANS Z83.20b-2003-GASFIRED LOW INTENSITY INFRA-RED HTR.
For Stainless Steel Upgrades the CombustionTable is upgraded to 409 Stainless Steel
Serial No. 0603DETR12345 0001
DETROIT RADIANT PRODUCTS CO.
21400HOOVER ROAD - WARREN, MI 48089
[phone] www.reverberray.com
AG2 - 40 - 125N
MODEL NO.
125,000 / 95,000
INPUT BTU/H
NAT GAS
FOR USE WITH
RE-VERBER-RAY INFRA-RED RADIANT TUBE HEATER
FOR INDOOR INSTALLATION ONLY
Gas Valve:
Circuit Board:
Wire Harness:
N.O. Switch:
N.O. VL Orifice:
N.C. Switch:
N.C. VL Orifice:
Diff Switch:
Diff VL Orifice:
Igniter:
Burner:
16”Tube:
Ind Lights:
Diag Light:
Term Block:
Transfomer:
Fan:
Alternate Fan:
Alt. Fan Usage:
IS22016051F5169 264E
36E96-224-N
Micro60-24
840
851
3 PCS Harness 852
None N/A
None
None N/A
None
Grey (+/-)
Norton 50
High 201
4” Stnd. 202
Yellow - 24V 828
Red LED 827
None N/A
40VA 826
Fasco Lg. 55A
50Hz - 120V 55B
When Specified
BURNER COMPNENTS (Specify TP - #’s)
Your Heater is: C1
Orifice Type
Gas: TP204-#
Air: TP44-#
C1 C2 C3
3 3 1
1 1/2” 1 5/8” 1 5/8”
Relay:
Filter:
24 Volt In:
120 Volt In:
None N/A
None
3T - plug 832
2x4 Box
Gas In:
Extra VL Orifice:
7/8” FC Flare 83
None
N/A
66
TUBE COMBINATION / KIT PARTS
Combustion:
Radiant:
Clamp:
Hangers:
RCS:
Reflector:
Endcap:
Baffle:
ID:
Electric:
Special 1:
Special 2:
Tag:
For Internal Use Only
TP-26A
TP-26A
TP-21B
TP-19B
TP-82
TP-20C
TP-105
TP-651 - 4”R
TP-26E
TP-26D
TP-21O
TP-19B-SS
TP-82-SS
TP-20C-SS
TP-105-SS
Item Standard Stainless Steel
Re-Verber-Ray
LLWT38
Micro60
Plug-Wh.
None
For all
Standard
Labels
See Board
Contact factory at 586-756-0950 for parts information and list prices. Or visit
http://wwwreverberray.com/parts
Data on this label is for the model shown on this label. If your heater has been
converted, this information is not correct. Please contact the factory for assistance.
AG2-40-125N
Production Code: AG2-125
Version: 8/06
0603DETR12345 0001
Serial #:
N/A
Stock:
None
Add-On Option(s):
SAMPLE
SAMPLE
1
1
1
Safety Labels and Their Locations
1.0 Safety • Safety Labels and Locations
Read and understand all safety information and warnings in this insert manual and the
Tube Heater General Manual before installation, operation and maintenance of the
radiant tube heater system.
Back Panel
Top Panel
AG1 Series
Rating Plate
F/N: LLTB018 (Natural Gas)
F/N: LLTB019 (LP Gas)
F/N: LLTCL001 Clearance to
Combustibles Label
3
Burner Control Box
Component Label (located
under the top panel)
Product safety signs or labels should be replaced by the product user when they no longer are legible.
Contact either your local distributor or the product manufacturer for obtaining replacement signs or labels.
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
F/N: LLV3EP1
1
F/N: LLAC
Air Metering Orifice
Air Metering Orifice
DO NOT REMOVE
TP-114
TP-3014 1 - 1/2"
SAMPLE

VALVE
PS
PRESSURE
SWITCH
V
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.
Clearance to combustibles is defined as the minimum distance that must exist between the tube surface,
or reflector, and any combustible items (see Figure 1.1). It also pertains to the distance that must be
maintained from moving objects around the tube heater. When installing the tube heater system, clearances
to combustibles for the Series tube heater and configuration must be maintained.
Clearance to Combustibles
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.
4
1.0 Safety • Safety Labels and Locations • Clearance to Combustibles AG1 Series
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
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.
INSTALLER
***AVOIDEQUIPMENT FAILURE***
THIS 10’ TUBE IS THE
COMBUSTIONCHAMBER.
THECOMUSTION CHAMBER UTILIZES
EITHER409 STAINLESS TITANIUMOR ALUMINIZED
STEEL- DEPENDING UPON THE
MODELNUMBER OF YOUR HEATER
THISTUBE MUST BE THE FIRST TUBE
FOLLOWINGTHE BURNER BOX.
MOUNTWELDED SEAM TO BOTTOM
CONSULTIOMOR PACKAGING STICKER FOR DETAILS
F/N: LLTB004 (orange)
F/N: LLTB026
Right Panel
(Valve Compartment)
Secondary Combustion
Chamber (if applicable)
Primary Combustion
Chamber
16” Burner
Tube
Left Panel
(Fan Compartment)
F/N: LL01 - Clearance Safety Tag
(Affix adjacent to heater’s thermostat)
F/N: LLV3EP6
ALUMINIZED TUBE
(This is the Second Chamber)
Thistube is constructed of aluminized coated steel and must be
placeddirectly after the titanium coated “CombustionChamber ”
(orangelabeled tube)
Usedon Models: XTS, DET(-3), DES(-3) (150-200 MBH) ONLY
ALUMINIZED TUBE
(This is the Second Chamber)
This tube is constructed of aluminized coated steel and must be
placed directly after the titanium coated “Combustion Chamber”
(orange labeled tube).
150,000 BTU/H models only

Model Number
Mounting
Angle*
Sides
Front Behind Top** Below
AG1 (20, 30, 40) - 50 [N, P] 0° 9 9 6 47
45° 39 8 10 47
with 1 side shield 0° 29 8 6 47
with 2 side shields 0° 9 9 6 47
20 ft. from burner 0° 7 7 6 30
AG1 (20, 30, 40) - 60 [N, P] 0° 9 9 6 47
45° 39 8 10 47
with 1 side shield 0° 29 8 6 47
with 2 side shields 0° 9 9 6 47
20 ft. from burner 0° 7 7 6 30
AG1 (20, 30, 40) - 75 [N, P] 0° 9 9 6 60
45° 39 8 10 60
with 1 side shield 0° 29 8 6 60
with 2 side shields 0° 9 9 6 60
20 ft. from burner 0° 7 7 6 30
AG1 (30, 40, 50) - 100 [N, P] 0° 14 14 6 66
45° 39 8 10 66
with 1 side shield 0° 29 8 6 66
with 2 side shields 0° 16 16 6 66
20 ft. from burner 0° 7 7 6 30
AG1 (40, 50) - 125 [N, P] 0° 20 20 6 76
45° 58 8 10 76
with 1 side shield 0° 42 8 6 76
with 2 side shields 0° 20 20 6 76
20 ft. from burner 0° 7 7 6 30
AG1 (40, 50, 60) - 150 [N, P] 0° 24 24 6 81
45° 58 8 10 81
with 1 side shield 0° 42 8 6 81
with 2 side shields 0° 23 23 6 81
20 ft. from burner 0° 11 11 6 44
5
1.0 Safety • Clearance to Combustibles
Chart 1.1 • Clearance to Combustibles in Inches (see Figure 1.1 for Mounting Angles)
Figure 1.1 •Mounting Angles
0° Mounting Angle 45° Mounting Angle
0° Mounting Angle
with 1 Side Shield
0° Mounting Angle
with 2 Side Shields
Side Side
Below
Top
Front Behind Front
Behind
Side Side
AG1 Series
* Heaters mounted on an angle between 0° to 45° must maintain clearances posted for 0° or 45°; whichever is greater.
** Maintain a 10 in. (0° mounting angle) or 12 in (1-45° mounting angle) clearance from ceilings constructed of tri-ply
plastic or plastic fogger lines.
Top Top Top
Below Below Below

6
2.0 Installation
2.0 Installation • Electrical Requirements
Instructions for the following are detailed in the Tube Heater General Manual:
• Design considerations
• Hanger suspension and placement (Note: Placement for poultry facilities on page 9).
• Tube layout and assembly
• Burner control box suspension
• Reflectors (and accessories)
• Venting and combustion air intake
• Gas requirements
• Baffle assembly
NOTE: Electronic versions of all manuals are available at www.detroitradiant.com.
AG1 Series
WARNING
!
!
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, serious injury or death. Read and understand, the installation, operating and
maintenance instructions thoroughly before installing or servicing this equipment. Only
trained, qualified gas installation and service personnel may install or service this equipment.
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 or death.
Combustion Air
The combustion air intake collar is also a factory preset air orifice. Non-contaminated air for combustion
must be ducted to the heater in all agricultural applications. Do not take combustion air from pressurized
attic spaces, with the exception of broiler houses.
Locate the air intake away from any steam source. Use caution when locating air intake above curtain
walls, as they can leak. When curtain walls are present, use 4-inch light gauge PVC air intake material
from curtain sidewall to the heater; do not exceed 25 feet. With an elbow, drop intake one foot below the
top of the curtain wall. Cap intake with a 1/4-inch birdscreen. Figure 2.1.
Figure 2.1 •Combustion Air Intake (Broiler House)
Burner
control box
Air intake
through attic
(broiler houses)
1/4 in. birdscreen
on plastic tee
Curtain wall

WARNING
!
!
Electric Shock
Field wiring to the tube heater must be connected and grounded according to the guidelines
in the Tube Heater General Manual, Series Insert Manual and in accordance with national,
state, provincial and local codes. In the United States refer to the most current revisions to
the ANSI/NFPA 70 Standard, and in Canada refer to the most current revisions to the CSA
C22.1 Part I Standard.
• 120 Volt - 60 Hz GRD, 3-wire.
• Starting current 4.8 amps.
• Running current 1.1 amps.
• 120 Volt control voltage.
7
2.0 Installation • Wiring
Electrical Requirements
Wiring
AG1 Series
Figure 2.2 •Field Wiring Diagrams
A. Multiple Heaters, Single Control.
Burner Control Box
Burner Control Box
Black
Panel
Ground
White
Black
Panel
Ground
White
120V Barn Controller
120V Out
120V In
L1 N
Green
Green

8
2.0 Installation • Wiring AG1 Series
Before field wiring this appliance - Check existing wiring; replace if necessary.
Note: If any of the original wire as supplied with the appliance must be replaced, it must be replaced with
wiring material having a temperature rating of at least 105° C.
Figure 2.3 • Internal Wiring Diagrams
A. Micro 60U-24 Ladder Diagram
B. Micro 60U-24 Block Diagram
SIC1
LINE1
NEUT
GND
NEUT
TH
PROBE
VALVE
BK
BK
BK
BK
G
BR
W
BK
BK
W
W
N
R
BK
O
BK
BK
120VACL1
Blower
Indicator Lights
Pressure Switch
Ignitor
Ignition Module
Gas Valve
Flame Rod
B
W
R
BK
BK
BK
Ground
Neutral
Valve
Neutral
TH
Line1
SIC1
Probe
W
BK
BK BK
BK
BK
BR
W
G
120VAC
N
L1
O
BK
W
BK
Terminal Block
Pressure Switch
Indicator Lights
Blower
Burner
Ignitor Flame
Rod
Ignition Module
Gas Valve

9
2.0 Installation • Wiring
Figure 2.4 •Sample Brooder Installation Diagrams
A. Center House Installation
B. Side Wall Installation
AG1 Series
C. 30 ft., 40 ft. and 50 ft. Tube Brooder Installation (houses with 4 ft. and 5 ft. on center truss locations).
NOTE: Utilize elongated hangers (TP-19E) on houses 50 feet or more with center house mounting to allow for
a wider throw pattern.
NOTE: Mount Reector at a 45° angle toward center. NOTE: Standard hangers (TP-19B) can only be used when
sidewall mounting. Elongated hangers (TP-19E) are not to be used.
1 1 1 1
NOTE: Sidewall
installations may require
additional hangers
depending on spacing.

10
Model Number Gas Type (select one) BTU/H (High Fire) Straight Length U-Tube Length Standard Weight (lbs.) Recommended Mounting Height Above Animals Combustion Chanber (uncoated) Radiant Emitter Tube(s) (uncoated)^ Radiant Surface Area (sq. ft.) 36” Baffle Sections Optional Alum-AO Quantity
AG1-20-50 N or LP 50,000 21’-7” 13’-0” 120 6’ to 9’ Alum HRT 20.2 5 1
AG1-20-60 N or LP 60,000 21’-7” 13’-0” 120 6’ to 9’ Alum HRT 20.2 5 1
AG1-20-75 N or LP 75,000 21’-7” 13’-0” 120 7’ to 10’ Alum HRT 20.2 5 1
AG1-30-50 N or LP 50,000 31’-3” *17’-8” 160 7’ to 10’ Alum HRT 30.4 5 2
AG1-30-60 N or LP 60,000 31’-3” *17’-8” 160 7’ to 10’ Alum HRT 30.4 5 2
AG1-30-75 N or LP 75,000 31’-3” *17’-8” 160 7’ to 10’ Alum HRT 30.4 5 2
AG1-30-100 N or LP 100,000 31’-3” *17’-8” 160 8’ to 14’ Alum HRT 30.4 6 2
AG1-40-50 N or LP 50,000 40’-11” 22’-8” 190 7’ to 10’ Alum HRT 40.5 5 3
AG1-40-60 N or LP 60,000 40’-11” 22’-8” 190 7’ to 10’ Alum HRT 40.5 5 3
AG1-40-75 N or LP 75,000 40’-11” 22’-8” 190 7’ to 10’ Alum HRT 40.5 5 3
AG1-40-100 N or LP 100,000 40’-11” 22’-8” 190 7’ to 11’ Alum HRT 40.5 5 3
AG1-40-125 N or LP 125,000 40’-11” 22’-8” 190 9’ to 14’ Alum HRT 40.5 5 3
AG1-40-150 N or LP 150,000 40’-11” 22’-8” 190 10’ to 14’ Ti-AL HRT 40.5 5 3
AG1-50-100 N or LP 100,000 50’-7” *27’-4” 235 8’ to 12’ Alum HRT 50.6 5 4
AG1-50-125 N or LP 125,000 50’-7” *27’-4” 235 9’ to 14’ Alum HRT 50.6 5 4
AG1-50-150 N or LP 150,000 50’-7” *27’-4” 235 10’ to 14’ Ti-AL HRT 50.6 5 4
AG1-60-150 N or LP 150,000 60’-3” 32’-4” 265 10’ to 14’ Ti-AL HRT 60.7 5 5
Specifications
2.0 Installation • Product Specifications
Chart 2.1 • Specifications
AG1 Series
* Model requires 5EA-SUB accessory package when installing in a ‘U’ configuration (P/N: TF1B).
^ ALUM-AO: Upgrade hot-rolled steel (HRT) radiant tubes to 16 gauge, black coated, aluminized steel for maximum
efficiency and longevity. NOTE: This option is highly recommended in contaminated or moisture laden
environments (i.e. poultry applications). See Chart 2.1 for quantity needed per heater.
AGAO-SS: Upgrade burner control box from coated steel to 304 Series stainless steel.

Key
11
Tube Installation Sequence
20 Foot
50 Foot
60 Foot
30 Foot
40 Foot
AG1 Series
Figure 2.5 •Tube Installation Sequence
Burner Control Box with
16” Burner Tube
Uncoated Steel Primary
Combustion Chamber
2.0 Installation •Tube Sequence •Heater Length
Important! The combustion chamber & radiant tube sections must be installed in the following order.
NOTE: Refer to the Tube Heater General Manual, Chart 3.6 (page 22) for secured reflector joints.
Uncoated Aluminized Steel Secondary
Combustion Chamber Location
(150,000 BTU/H models only)
Uncoated Aluminized Steel
Secondary Combustion Chamber
(150,000 BTU/H models only)
Uncoated Hot-Rolled Steel
Radiant Emitter Tube or ALUM-AO
Tube Clamp
Baffle Location
Uncoated Aluminized Steel Secondary
Combustion Chamber Location
(150,000 BTU/H models only)

WARNING
!
!
12
3.0 AG1 Series Operation • Sequence of Operation • Thermostat • Diagnostics
3.0 Operation
NOTE: Reference the Tube Heater General Manual for installation requirements.
Sequence of Operation
Starting Circuit: Upon a call for heat, the fan is energized. Once operational static pressure is achieved,
the differential switch will close initiating the ignition sequence. After a 5-second delay, the glo-bar is
energized for 45 seconds and the control allows the gas valve to open.
The trial for ignition is 8 seconds. If flame sense is not established within 8.5 seconds, the heater will
attempt two (2) additional ignition sequences before proceeding to soft lockout. Soft lockout
automatically retries after one (1) hour or the control can be reset by briefly interrupting the power
source.
Running Circuit: After ignition, the flame rod monitors burner flame. If sense of flame is lost, the control
immediately acts to reignite the gas-air mixture (identical to the starting sequence). If flame sense is
not established within 8.5 seconds, the heater will attempt two (2) additional ignition sequences
before proceeding to soft lockout. The control can be reset by briefly interrupting the power source.
Thermostat
Note: Different thermostats operate according to their particular features. Refer to thermostat
specifications for details.
This heater must be installed and serviced by trained gas installation and service
personnel only.
Do not bypass any safety features or the heater’s built in safety mechanisms will
be compromised.
AG1 Series

Operational Indicator Lights
The externally located operational indicator lights are provided to assist in troubleshooting the heater.
Refer to the following pages for additional troubleshooting information.
13
3.0 Operation • Diagnostics
AG1 Series
Figure 3.1 • Operational Indicator Lights
VALVE
PS
PRESSURE
SWITCH
V
Light 1
Indicates Valve
Opens
Light 2
Indicates Pressure
Switch Closes
Operational Indicator Lights

14
4.0 Troubleshooting Guide
4.0 Troubleshooting Guide
Continued on page 16.
AG1 Series
4.0 Troubleshooting Guide
Is the blower
obstructed?
Replace circuit board.
Does the ignitor warm
up and glow red?
Is the ignitor
physically
damaged?
Check voltage at ignitor during
ignition sequence (usually 30-
45 seconds after power to the
heater). Is it 120V?
Is the inlet or the outlet of the unit
obstructed (i.e., ice, birds nest, dirt,
flapper cap stuck closed, etc.) ?
Turn up thermostat
Does the fan
blower turn on?
Is the power at the
heater 120V?
Find the source of the electrical problem
between panel/thermostat and heater.
No
Yes
Remove obstruction
and lubricate fan.
No
Yes
Does the switch
light energize?
Yes
Is the light burnt out?
If so, replace.
No No
Yes
Remove obstruction.
No
No No
No
Yes
Yes
Replace ignitor.
Does valve light
energize?
Yes
Does the burner
ignite at all?
No
The circuit board and/or wiring
harness may be faulty and
needs to be replaced.
No
Yes
Replace faulty light.
Does valve open?
Yes
Yes No
No
Yes

NOTICE
Bypassing any switch is intended for testing purposes only. Do not leave switch bypassed
during normal operation or the heater’s built-in safety mechanisms will be compromised.
15
4.0 Troubleshooting Guide
AG1 Series
Is 120V coming
to the fan?
Check for loose wiring
or resistance in hose
connections to pressure
switch. Are they ok?
The heater is equipped with a safety pressure
switch. This differential switch, located in the
fan compartment, is a normally open pressure
switch. Temporarily place jumpers across
the terminals of the switch (Be sure to reinstall
the burner control box cover).
Does the light energize?
Key
Start
Question
Process
Question
Corrective
Action
Yes
No
The fan is faulty
and must be
replaced.
Correct
wiring.
Repair.
No
Yes
Yes
Replace faulty light.
No
Replace the differential switch after verifying the following:
• Baffle(s) is/are in the radiant tube(s) farthest from the burner.
• The heater, fan blower, squirrel cage, intake and exhaust are free from
dirt and obstructions.
• The 4” air intake pipe does not exceed 20 feet and/or 2 elbows.
• There is not a negative pressure experienced at the area of air intake
(i.e., attic space, high winds, very tight building).
• The flapper cap on the exhast cap is not stuck closed.
If any of the above are occuring, please address the problem.
Is resistance through
the ignitor 50-400 Ω ?
Replace
ignitor.
No
Consult
factory.
Yes

Does the heater
stay ON until a call
for heat ends?
16
4.0 Troubleshooting Guide
Continued from page 14.
AG1 Series
Does the
burner ignite?
Test for 120V at valve opening period (usually 30 to 45 seconds
after power to heater). Is there 120V to valve for 8 seconds?
Replace circuit board and/or wiring harness.
Does the burner
stay on?
Is the ball valve
to the heater in
the ON position?
Check to make sure gas pressure is within
minimum and maximum inputs, as indicated on
burner rating plate. Is gas pressure OK?
Does the burner stay on
for approx. 8 seconds
and then shut off?
Does the burner come
on and turn off
immediately (1 or 2
seconds)?
Check to make sure gas pressure
is within minimum and maximum
inputs, as indicated on the burner
rating plate. Is gas pressure OK?
Pressure
switch may
be faulty or
there is a
restriction in
the exhaust.
Troubleshooting ends
The heater can shut down due to:
• Improper grounding.
• High winds.
• Taking combustion air from the attic.
• Dirty environment.
• Improperly positioned baffles.
• Fluctuating gas pressure.
No
Yes
No Yes
Yes
No
Correct problem.
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Turn on.
Yes
Correct problem.
No
No

NOTICE
Bypassing any switch is intended for testing purposes only. Do not leave switch bypassed
during normal operation or the heater’s built-in safety mechanisms will be compromised.
17
4.0 Troubleshooting Guide
AG1 Series
Check to make sure gas pressure is within minimum and
maximum inputs, as indicated on burner rating plate.
Is gas pressure OK?
Were the gas lines purged of air?
Is the heater properly
grounded? Is the heater’s
polarity correct?
With micrometer, check
amperage at flame rod. Is it
greater than .4 microamps?
Check to make sure flame
sensor wire is OK. If so,
then replace circuit board.
Sensing rod is faulty or flame
is weak. Check to make sure
heater is operating at proper
gas pressure as indicated on
burner rating plate and then, if
needed, replace sensing rod.
Replace gas valve.
Yes
Correct problem.
Correct problem.
No
No
Yes Yes
No
Purge gas line.
No
Yes
Confirm manifold pressure is
correct and/or gas orifice is not
plugged and is the correct size.

205
383A 221
222
11
50
321
Figure 5.1 •Burner Assembly
Components
Chart 5.1 • Parts List
18
5.0 Parts • Heater Components and Parts List
5.0 Parts 1
264B, E, D
207
97
218
219
55A
1402
351A
352A
70
828
114
31B
122
33B 83, 83A*
212
208B
TP-240, 241
223
204
200A or 201B
303A
12
9
10
217
5380
15
14
16
21B
222A
214
304
76
*Optional. ** 6 feet total required to cover outer edges of the burner control box.
31B
13
13
17
AG1 Series
301
333
68B
Part No. Description Part No. Description
TP-1 Control Box Cover TP-26C 10 ft. Hot Rolled (HRT) Steel Radiant Tube
TP-5 Flange Gasket TP-31B Control Box Mounting Bracket
TP-9 Conduit Coupling TP-33B 1/2” Shut-Off Ball Valve / Inlet Tap
TP-10 Conduit 4” x 1/2” TP-50 Glo-Bar Ignitor
TP-11 Glo-Bar Ignitor Box TP-55A Fan Blower
TP-12 Glo-Bar Ignitor Box Cover TP-65I36” Interlocking Turbulator Baffle
TP-13 8 x 1/2” Self-Drilling Screw TP-68B Large Strain Relief Bushing with Lock Nut
TP-14 Sight Glass Gasket TP-70 Control Box Cover Gasket (per foot**)
TP-15 Sight Glass TP-76 Rubber Grommet
TP-16 Sight Glass Washer TP-82 Reflector Center Support (RCS)
TP-17 Sight Glass Kit TP-83 24” Stainless Steel Flexible Gas Connector
TP-19B 4” Wire Hanger with Tension Spring TP-83A 24” PVC Coated S.S. Flexible Gas Connector*
TP-19E Optional 4” Elongated Wire Hanger* TP-84 1/2” Female / Male Flare Fitting
TP-20C 120” Aluminum Reflector TP-97 1/4” x 1/4” Brass Int./Ext. Atmos. Barb Fitting
TP-20D 120” Stainless Steel Reflector* TP-105 Aluminum Reflector End Cap
TP-21B 4” Standard Tube Clamp TP-106 Reflector End Cap Clips (8 pcs.)
TP-26F 10 ft. Uncoated (ALUM) Combustion Tube TP-113 Reflector Tension Spring
TP-26G 10 ft. Uncoated (AL-TI) Combustion Tube TP-114 Plastic Air Orifice with Screen (consult factory)
331
84

19B
106
105
26F, 26G
21B
20C, 20D*
82
26C
65I
113
19E*
Figure 5.2 •Tube & Reflector Components
19
5.0 Parts • Heater Components and Parts List
AG1 Series
Combustion Tube(s) Radiant Emitter Tube(s)
Part No. Description Part No. Description
TP-200A Burner (50-100 MBH Models) TP-264B Differential Pressure Switch, 65 to 75 MBH
TP-201B Burner (125-150 MBH Models) TP-264E Differential Pressure Switch, 100 & 125 MBH
TP-204 Gas Orifice (consult factory) TP-264D Differential Pressure Switch, 150 MBH
TP-205 Glo-Bar Holder TP-301 Center Divider Panel
TP-207 Pressure Switch Mounting Bracket TP-303A End Panel, Right
TP-208B Gas Valve Mounting Bracket TP-304 Burner Control Box Outer Shell
TP-212 1/2” x 3” Pipe Nipple TP-321 Ignition Plate Gasket
TP-214 Glo-Bar Wiring Harness TP-330 Divider Grommet
TP-217 Pressure Switch Barb TP-331 Green Self Tap Ground Screw
TP-218 Differential Switch Vinyl Sensing Tube (exhaust) TP-333 36” Black 120 Volt Plug
TP-219 Differential Vinyl Sensing Tube (burner) TP-351A Potted Circuit Circuit Board
TP-221 Glo-Bar Holder Gasket TP-352A Circuit Board Wiring Harness for TP-351A
TP-222 Flame Rod TP-380 16” Burner Tube with Flange
TP-222A Flame Rod Wire TP-383A Glo-Bar Ignitor Plate
TP-223 Gas Manifold TP-826 40VA Transformer
TP-240 Gas Valve Assembly - Natural Gas TP-828 Amber Operational Indicator Light
TP-241 Gas Valve Assembly - Propane Gas TP-1402 End Panel, Left

AG1 Series
Insert Manual
Part No. Description 20 Ft. 30 ft. 40 ft. 50 ft. 60 ft.
TP-19B 4” Hanger w/ Tension Spring 3 4 5 6 7
TP-19E 4” Elongated Hanger w/ Tension Spring Optional Optional Optional Optional Optional
TP-21B 4” Tube Clamp 2 3 4 5 6
TP-33B 1/2” Shut-Off Valve & Inlet Tap 1 1 1 1 1
TP-82 4” Reflector Center Support 1 1 1 1 1
TP-83 24” S.S. Flexible Gas Connector 1 1 1 1 1
TP-105 Reflector End Cap 2 2 2 2 2
TP-106 Reflector End Cap Clips 8 8 8 8 8
LIOGTa General Tube Heater Manual 1 1 1 1 1
LIOAG1a AG1 Series Insert Manual 1 1 1 1 1
Chart 5.2 • Kit Contents for AG2 Series - Reference the length column for your model.
TP-19B 4” Hanger with
Reflector Tension Spring
TP-105 Reflector End Cap
TP-21B 4” Tube Clamp
TP-106 Reflector
End Cap Clips
TP-33B 1/2” Shut-Off Valve
(Ball Valve & Inlet Tap)
TP-83 24” Stainless Steel
Flexible Gas Connector
Filled By:
Kit Contents Check List
20
AG2 Series Kit Contents
Tube Heater General and
AG1 Series Insert Manuals
F/N: LIOGTa & LIOAG1a
TP-82 4” Reflector
Center Support (RCS)
* Part number for models upgraded with stainless steel options.
© 2007 Detroit Radiant Products Co.
21400 Hoover Road • Warren, MI 48089
Phone: [phone] Fax: [phone]
www.detroitradiant.com • [e-mail]
Printed in U. S. A.
5.0 Parts •Kit Contents Check List AG1 Series
Approvals
• CSA.
• Indoor/outdoor approval.
• Commercial/agricultural approval.
Limited Warranty
• 1 year - Burner box components.
• 3 years - Combustion and radiant tubes.
• 5 years - Stainless steel burner.
• See page 36 of the General Tube Heater Manual
for terms and conditions.
Tube Heater
General Manual
*TP-829
*TP-19C
*TP-220 *TP-105A
*TP-83A
TP-19E Optional 4”
Elongated Hanger with
Reflector Tension Spring