DX3 Series
!
Insert Manual
For complete installation instructions, see the Tube Heater General Manual
that accompanies this insert manual.
The DX3 Series Infrared 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 DX3 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:
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.
• Do not try to light any appliance. • Immediately call your gas supplier from a neighbor’s phone.
• Do not touch any electrical switch. • Follow the gas supplier’s instructions.
• Do not use any phone in your building. • If you cannot reach your gas supplier, call the fire department.
INSTALLER: Present this manual to the end user.
Keep these instructions in a clean and dry place for future reference.
Model#: ___________________ Serial #: _________________________
(located on rating label)
LIODX3 - Rev.27512
Print: Rev.13012_5M -11/13 (CDS )
Replaces: LIODX3-1M-8/12(CDS)
DX3 Series
Contents
1.0 Safety...................................................................3
Safety Labels and Locations ............................................3
Clearance to Combustibles .............................................4
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Gas Requirements ...................................................6
Electrical Requirements................................................6
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Specifications ......................................................10
Tube Installation Sequence ............................................11
3.0 Operation ..............................................................12
Sequence of Operation ...............................................12
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Operational Indicator Lights............................................13
4.0 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.0 Parts ..................................................................18
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Parts List ..........................................................18
Kit Contents Check List ...............................................20
Approvals..........................................................20
Limited Warranty ....................................................20
NOTE: See page 10 for a list of available models and specifications.
2
DX3 Series
- 120V HEATER INPUT -
Air Metering Orifice
DO NOT REMOVE
TP-114
TP-3014
3”
SAMPLE
1.0 Safety • Safety Labels and Locations
1.0 Safety
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.
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.
HOT
F/ N : LLV3EP1
F/ N : LLV3EP5
(Models with
24VAO Option)
120V
NEUTRAL
EARTH
HOT
NEUTRAL
120V
EARTH
- 120V HEATER INPUT -
F/N: LLAC
Air Metering Orifice
Back Panel
F/ N : LLV3EP 6
Top Panel
2. Remove top cover (2 thumbscrews).
3. Remove tsix (6) 1/4” screws.
4. Lift and remove panel.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
F/N: LLTB018 (Natural Gas)
F/N: LLTB019 ( LP Gas)
FAN COMPARTMENT
1. Disconnect gas & electricity.
SERVICE ACCESS PANEL
SERVICE ACCESS PANEL
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
4. Swing hinged panel downward.
3. Remove top cover.
2. Remove four (4) thumbscrews.
1. Disconnect gas & electricity.
CONTROLS & GAS VALVE COMPARTMENT
F/N: LLTCL001L/C/R
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
CAUTION: HOT SURFACE.
SERVICE ACCESS PANEL
cover upward and outward.
2. Remove cover by lifting top
1. Disconnect gas & electricity.
IGNITER & FLAME SENSE COMPARTMENT
Clearance to Combustibles Labels
F/N: LLLOGO1 Logo Label
3
1.0 Safety • Safety Labels and Locations • 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.
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
F/N: LLTB026 F/N: LLTB024L
SERVICE ACCESS PANEL
IGNITER & FLAME SENSE COMPARTMENT
1. Disconnect gas & electricity.
2. Remove cover by lifting top
cover upward and outward.
CAUTION: HOT SURFACE.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
RE-VERBER-RAY INFRA-RED RADIANT TUBE HEATER
®
FOR INDOOR (Non-Residential) INSTALLATION ONLY.
Class IIIA Permanent Label
MODEL NO.
INPUT BTU/H
DET-40-125N(-3)
125,000 / 95,000
HL3
DX3
Volts AC:
Manifold Pressure:
120VAC - 60Hz
3.5 in.
AMPS - Starting:
Maximum Inlet Pressure:
1.7
14 in.
AMPS - Running:
Minimum Inlet Pressure:
1.1
5.0 in.
Combustion Chamber:
4” Black Coated Aluminized
DESIGN COMPLIES WITH:
ANSI Z83.20b-2004-GAS FIRED LOW INTENSITY INFRA-RED HTR.
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI
(586) 756-0950 - www.drp-co.com
Inches W.C.P.
Inches W.C.P.
Inches W.C.P.
FOR USE WITH
Natural Gas
Heater Type
C1
Minimum Mounting Angle:
045DEGREES
Maximum Mounting Angle:
DEGREES
Serial No.: 1208XXXXXXXXXX 0001
Controls Compartment
SERVICE ACCESS PANEL
DX3 Series
HL-40-125N(-3)
DX
HL3-125
DX3
Production Code:
7.08
Version:
Data on this label is for the model shown on this label. If your heater has been converted,
this information is not accurate. Please contact the factory for assistance.
BURNER COMPONENTS:
Gas Valve:
Circuit Board:
Wire Harness:
N.O. Switch:
N.O. VL Orifice:
N.C. Switch:
N.C. VL Orifice:
Diff Switch:
Diff VL Orifice:
Igniter:
Burner:
16” Tube:
Ind. Lights:
HEATER
TYPE:
C1
For parts replacement information, contact factory at 586-756-0950 or visit www.drp-co.com/parts.
(Specify TP-#’s)
36G54-224-N
35-66
3 PCS Harness
None
None
None
None
IS22010051F5166
Grey (+ / -)
Norton
SAMPLE
Mid
4” Gen.
Yellow - 24V
Orifice Type:
Gas:
TP-204#
Air:
1 5/16”
TP-44#191 7/16”
840A
851B
3252
N/A
N/A
264E
50
201B
380
828
C1 C2 C3
19
Serial No.: 0804XXXXXXXXXX 0001
None
Stock:
Add-On:
N/A
On Circuit Board
Diag. Light:
None
Term. Block:
40 VA
Transformer:
Fasco Lg.
Fan:
50Hz - 120V
Alt. Fan:
When Specified
Alt. Fan Usage:
Picker x2
Relay:
None
Filter:
3 T-plug
24 Volt In:
6’ Blk. Cord
120 Volt In:
7/8” FC
Gas In:
None
Extra VL Orifice:
Internal Use Only:
Electric:
19
LLWT038
Tag:
1 5/16”
None
Special 1:
Special 2:
N/A
826
55A
55B
1325
N/A
832
333
83
17
1 7/16”
Burner Control Box Component Label
(located inside the center compartment lid)
RE-VERBER-RAY INFRA-RED RADIANT TUBE HEATER
®
FOR OUTDOOR USE AND INDOOR (Non-Residential) INSTALLATION ONLY.
Class IIIA Permanent Label
MODEL NO.
HL-40-125N(-3)
DX
Volts AC:
120V - 60Hz
AMPS - Starting:
4.8
AMPS - Running:
1.1
Combustion Chamber:
4” Black Coated Aluminized
DESIGN COMPLIES WITH:
ANSI Z83.20b-2004-GAS FIRED LOW INTENSITY INFRA-RED HTR.
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI
(586) 756-0950 - www.drp-co.com
INPUT BTU/H
125,000 / 95,000
Manifold Pressure:
3.5 in.
W.C.P.
Maximum Inlet Pressure:
14 in.
W.C.P.
Minimum Inlet Pressure:
5.0 in.
W.C.P.
SAMPLE
For stainless steel upgrades: The combustion tube is 409 Series stainless steel.
FOR USE WITH
Natural Gas
Heater Type
C1
Minimum Mounting Angle:
045DEGREES
Maximum Mounting Angle:
DEGREES
Serial No.: 0807XXXXXXXXXX 0001
Rating
Plate
F/N: LLTB025R
Fan Compartment
F/N: LL01 - Clearance Safety Tag
(Affix adjacent to heater’s thermostat)
Clearance to Combustibles
16” Burner Tube Combustion Chamber
F/N: LLTB004 (orange)
(150,000 - 200,000 Btu/h models only)
WARNING
Radiant Tube (s)
Placement of explosive objects, flammable objects, liquids and vapors close to
the heater may result in explosion, fire, property damage, serious injury or death.
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 model tube heater and configuration must be maintained. Refer to Chart 1.1 to
determine the required distances for your model.
Do not store or use explosive objects, liquids or vapor in the vicinity of the heater.
4
DX3 Series
1.0 Safety • Clearance to Combustibles
Chart 1.1 • Clearance to Combustibles in Inches (see Figure 1.1 for Mounting Angles)
Mounting
Model Number
DX3 (20, 30, 40) - 50, 60 [N, P]
with 1 side shield
with 2 side shields 0° 9 9 6 47
20 ft. from burner 0° 7 7 6 30
DX3 (20, 30, 40) - 75 [N, P]
with 1 side shield 0° 29 8 6 60
with 2 side shields 0° 9 9 6 60
20 ft. from burner
DX3 (30, 40, 50) - 100 [N, P]
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
DX3 (30, 40, 50, 60) - 125 [N, P]
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
DX3 (40, 50, 60) - 150 [N, P]
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
DX3 (40, 50, 60, 70) - 175 [N, P]
with 1 side shield 0° 50 8 6 92
with 2 side shields 0° 30 30 6 92
20 ft. from burner 0° 11 11 6 44
DX3 (50, 60, 70, 80) - 200 [N, P]
with 1 side shield 0° 54 8 6 94
with 2 side shields 0° 30 30 6 94
20 ft. from burner 0° 11 11 6 44
Heaters mounted on an angle between 0° to 45° must maintain clearances posted for 0° or 45°; whichever is greater.
*
Angle*
0° 9 9 6 47
45° 39 8 10 47
0° 29 8 6 47
0° 9 9 6 60
45° 39 8 10 60
0° 7 7 6 30
0° 14 14 6 66
45° 39 8 10 66
0° 20 20 6 76
45° 58 8 10 76
0° 24 24 6 81
45° 58 8 10 81
0° 34 34 6 92
45° 63 8 10 92
0° 41 41 6 94
45° 63 8 10 94
The stated clearance to combustibles represents a surface temperature of 90
Side
Top BelowFront Behind
°
F (32°C) above room
temperature. Building materials with a low heat tolerance (such as plastics, vinyl siding, canvas,
tri-ply, etc.) may be subject to degradation at lower temperatures. It is the installer’s responsibility to
assure that adjacent materials are protected from degradation.
Figure 1.1 • Mounting Angles
0° Mounting Angle
Top
45° Mounting Angle
Top
0° Mounting Angle
with 1 Side Shield
(P/N: SSE)
Top
0° Mounting Angle
with 2 Side Shields
(P/N: SSE)
Top
Side
Below
Side
Front
Below
Behind
Front Behind
Below
5
Side Side
Below
2.0 Installation • Gas Requirements • Electrical Requirements
!
2.0 Installation
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.
Instructions for the following are detailed in the Tube Heater General Manual:
• Design considerations
• Hanger suspension and placement
• Tube layout and assembly
• Burner control box suspension
• Reflectors (and accessories)
• Venting and combustion air intake
• Gas requirements
• Baffle assembly
DX3 Series
Note: Electronic versions of all manuals are available at www.detroitradiant.com
Gas Requirements
Type of Gas
Natural 3.5 Inches W.C. 5.0 Inches W.C. 14.0 Inches W.C.
Liquefied Petroleum 10.0 Inches W.C. 11. 0 Inches W.C. 14.0 Inches W.C.
IMPORTANT: Consult the Tube Heater General Manual for gas connection requirements.
Required Manifold
Pressure
Minimum Inlet
Pressure
Maximum Inlet
Pressure
Electrical Requirements
• 120VAC - 60 Hz GRD, 3-wire.
• 120VAC thermostat connection.
• Starting current 4.8 amps
• Running current 1.1 amps
NOTICE
The DX3 Series comes standard requiring a 120VAC thermostat connection. An optional 24VAC internal
relay (24VAO) may be factory installed if the heater is to be controlled via a 24VAC thermostat. A 40VA
transformer is necessary when using the 24VAO option.
NOTE: A relay transformer may be used in lieu of the factory installed 24VAO option.
6
!
DX3 Series
120V
Heaters on the same vent must
N
Wiring
Electric Shock
Field wiring to the tube heater must be connected and grounded in accordance with national,
state, provincial, local codes and to the guidelines in the Tube Heater General Manual and
Series Insert Manual. 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.
Figure 2.1 • Field Wiring Diagrams
A. 120V Single/Multiple Line Voltage Heater(s)
2.0 Installation • Wiring
WARNING
AC-60 Hz. Supply
L1
share the same thermostat.
T
Neutral
Ground
B. 24VAO (Internal Relay Option)
Common required for
thermostats that require
constant power.
Two 1/4” female spade
terminals as supplied
NOTE: Up to 4 line voltage tube heaters can
be wired to most line voltage thermostats.
Additional heaters
To 120VAC grounded outlet.To 120VAC grounded outlet.
Burner Box Burner Box
To 120VAC
grounded
outlet.
Common
W
R
24VAC Digital
Thermostat
External
Transformer
(field supplied)
-
24VAC
120VAC
24V
COM
To 120VAC
grounded
outlet.
+
24V
COM
L1
120 Volt-60Hz. Supply
(Observe polarity)
7
2.0 Installation • Wiring
120VA
N
O
Igniter
N
120VACL1
DX3 Series
Before field wiring this appliance - Check existing wiring; replace if necessary.
Note: If any of the original wire supplied with the appliance must be replaced, it must be replaced with
wiring material having a temperature rating of at least 105° C.
Figure 2.2 • Internal Wiring Diagrams
A. Ladder Diagram - TP-351A
BK
BK
BK
Igniter
B. Block Diagram - TP-351A
Terminal Block
Pressure Switch
Flame Rod
Blower
W
BK
BK
BR
SIC1
PROBE
BK
BK
O
R
LINE1
TH
NEUT
VALVE
Ignition Module
BK
NEUT
BK
Indicator Lights
BK
Gas Valve
BK
W
W
G
GND
Flame
Rod
Burner
BK
BK
L1
C
W
BK
Blower
BK
BK
BK
Pressure Switch
Indicator Lights
Gas Valve
BK
W
W
R
W
BK
G
BK
Probe
SIC1
Line1
TH
Neutral
Valve
Neutral
Ground
BR
Ignition Module
8
N
Relay
Burner
DX3 Series
Figure 2.3 • Alternative Wiring Diagrams
A. TP-351A Ladder Diagram - Internal Relay Option (24VAO)
120VACL1
NC
NO
2.0 Installation • Wiring
COM
24VAC
Thermostat
Te rminal
BK
BK
Igniter
BK
Pressure Switch
BK
W
BR
Blower
BK
O
R
LINE1
TH
SIC1
PROBE
NEUT
IGNITION MODULE
VALVE
BK
NEUT
Indicator Lights
BK
W
G
GND
BK
BK
BK
Gas Valve
W
B. TP-351A Block Diagram - Internal Relay Option (24VAO)
BK
Pressure Switch
BK
Indicator Lights
BK
BK
Gas Valve
Thermostat
Te rminal
24VAC
Relay
120VAC
NO NC
COM
L1
N
BK
W
Te rminal Block
BK
Blower
BK
BK
W
O
W
R
W
G
Probe
SIC1
Line1
TH
Neutral
Valve
Neutral
Ground
Igniter
BK
Flame
Rod
BR
Ignition Module
9
2.0 Installation • Product Specifications
Specifications
Chart 2.1 • Specifications
DX3 Series
Model Number
DX3-20-50
DX3-20-60
DX3-20-75
DX3-30-50
DX3-30-60
DX3-30-75
DX3-30-100
DX3 -30-125
DX3-40-50
DX3-40-60
DX3-40-75
DX3 -40 -100
DX3 -40 -12 5
DX3 -40 -150
DX3-40-175
DX3-50-100
DX3-50-125
DX3-50-150
DX3-50-175
DX3-50-200
DX3-60-125
DX3-60-150
DX3-60-175
DX3-60-200
DX3-70-175
DX3-70-200
DX3-80-200
* Model requires stainless steel tube clamp (P/N: TP-220) to be located at the seam between the primary
combustion chamber and the secondary combustion tube downstream of the burner control box.
** Model requires 5EA-SUB accessory package when installing in a ‘U’ configuration (P/N: TF1B).
Gas Type (Select One)
N or LP 50,000 21’-9” 13’-1” 120 N/A 9’ to 15’ Alum Alum 20.2 5
N or LP 60,000 21’-9” 13’-1” 120 N/A 10’ to 15’ Alum Alum 20.2 5
N or LP 75,000 21’-9” 13’-1” 120 145 11’ to 18’ Alum Alum 20.2 5
N or LP 50,000 31’-5” **17’- 9” 160 N/A 10’ to 15’ Alum Alum 30.4 5
N or LP 60,000 31’-5” **17’- 9” 160 N/A 11’ to 18’ Alum Alum 30.4 5
N or LP 75,000 31’-5” **17’-9” 160 195 12’ to 20’ Alum Alum 30.4 5
N or LP 100,000 31’-5” **17’-9” 160 195 13’ to 23’ Alum Alum 30.4 5
N or LP 125,000 31’-5” **17’-9 ” 160 195 14’ to 25’ Alum Alum 30.4 6
N or LP 50,000 41’-1” 22’-9” 19 0 N/A 11’ to 18’ Alum Alum 40.5 5
N or LP 60,000 41’-1” 22’-9” 19 0 N/A 11’ to 18’ Alum Alum 40.5 5
N or LP 75,000 41’-1” 22’-9” 190 235 12’ to 20’ Alum Alum 40.5 4
N or LP 100,000 41’-1” 22’-9” 19 0 235 13’ to 23’ Alum Alum 40.5 4
N or LP 125,000 41’-1” 22’-9” 190 235 14’ to 25’ Alum Alum 40.5 5
N or LP 150,000 41’-1” 22’-9” 19 0 235 15’ to 27’ Titan Alum 40.5 5
N or LP *175,000 41’-1” 22’-9” 190 235 16’ to 30’ Titan Alum 40.5 5
N or LP 100,000 50’-9” **27’-5” 235 290 15’ to 27’ Alum Alum 50.6 2
N or LP 125,000 50’-9” **27’-5” 235 290 15’ to 27’ Alum Alum 50.6 3
N or LP 150,000 50’-9” **27’-5” 235 290 16’ to 30’ Titan Alum 50.6 3
N or LP *175,000 50’-9” **27’-5” 235 N/A 17’ to 35’ Titan Alum 50.6 3
N or LP *200,000 50’-9” **27’-5” 235 N/A 18’ to 40’ Titan Alum 50.6 2
N or LP 125,000 60’-5” 32’-5” 265 330 16’ to 30’ Alum Alum 60.7 2
N or LP 150,000 60’-5” 32’-5” 265 330 17’ to 35’ Titan Alum 60.7 2
N orLP *175,000 60’-5” 32’-5” 265 N/A 17’ to 35’ Titan Alum 60.7 2
N or LP *200,000 60’-5” 32’-5” 265 N/A 18’ to 40’ Titan Alum 60.7 2
N or LP *175,000 70 ’-1” **37’-3” 300 N/A 19’ to 42’ Titan Alum 70.9 2
N or LP * 200,000 70 ’-1” **37’-3” 300 N/A 19’ to 42’ Titan Alum 70.9 2
N or LP * 200,000 79’-9” 4 2 ’-1” 330 N/A 20’ to 45’ Titan Alum 81.0 2
BTU/H
Straight Length
U-Tube Length
Standard Weight (lbs.)
Stainless Steel Weight
(lbs.)
Recommend
Mounting Height
Combustion Chamber
(Black Coated)
Radiant Emitter Tube(s)
(Black Coated)
Radiant Surface Area
(sq. ft.)
36” Baffle Quantity
IMPORTANT: Reference box label to determine the number of required baffles sections for each model heater.
Titan = Black coated titanium stabilized aluminized steel.
Alum = Black coated aluminized treated steel.
10
DX3 Series
2.0 Installation • Tube Sequence • Heater Length
Tube Installation Sequence
Figure 2.4 • Tube Installation Sequence
Important! The combustion chamber & radiant tube sections must be installed in the following order.
20 Foot
30 Foot
40 Foot
Stainless Steel Clamp on 150-175 MBH models (P/N: TP-220).
50 Foot
60 Foot
70 Foot
80 Foot
Stainless Steel Clamp on 150 - 200 MBH models (P/N: TP-220).
Stainless Steel Clamp on 150 - 200 MBH models (P/N: TP-220).
Stainless Steel Clamp Location (P/N: TP-220).
Stainless Steel Clamp Location (P/N: TP-220).
Key
Burner Control Box with
16-inch Burner Tube
Black Coated Combustion
Chamber Tube*
Black Coated Aluminized Combustion
Chamber/Radiant Emitter Tube
Standard Tube Clamp
Stainless Steel Tube
Clamp (P/N: TP-220)
175-200 MBH models only - Located
between 1st and 2nd 10 ft. tube sections.
Baffle Location
*Aluminized tubes (50,000 to 125,000 BTU/h models); Titan tubes (150,000 to 200,000 BTU/h models) .
NOTE: Refer to the Tube Heater General Manual, Chart 3.6 (page 23) for secured reflector joints.
11
!
3.0 DX3 Series Operation • Sequence of Operation • Thermostat • Diagnostics
DX3 Series
3.0 Operation
WARNING
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.
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. Refer to Figure 2.1 for field wiring diagrams.
DX3 Series heaters with 24VAO option require a 24VAC, single-stage thermostat to operate. The burner
control box is equipped with a round terminal strip that accepts two (2) 1/4” female spade terminals. Do
not supply 120VAC to the 24VAC connection.
12
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
DX3 Series
3.0 Operation • Diagnostics
Diagnostics
Lockout:
The controls will automatically lockout the heater system when an external or system fault occurs. There
are two types of lockout:
Soft Lockout: The heater will attempt to light three times. In the event of a failed attempt to light, (gas
pressure, valve, no flame sense etc.), the heater will enter a soft lockout period for 15
minutes and then attempt to light three more times before entering Hard Lockout mode.
Hard Lockout : If proof of flame is not established, a component failure occurs or blockages are evident,
the heater will enter hard lockout. If lockout occurs, the control can be reset by briefly
interrupting the power source. Refer to Chart 3.1 below for a description of LED codes.
Operational Indicator Lights
The externally located operational indicator lights are provided to assist in troubleshooting of the heater.
Refer to the following pages for additional troubleshooting.
Figure 3.1 • Operational Indicator Lights
Light 1
Indicates Valve
Opens
Operational Indicator Lights
Indicates Pressure
Light 2
Switch Closes
13
4.0 Troubleshooting Guide
4.0 Troubleshooting Guide
Turn up thermostat
DX3 Series
Does the fan
blower turn on?
Yes
Does the switch
light energize?
Yes
Does the igniter warm
up and glow red?
No
Is the power at the
heater 120V?
Yes
No
Find the source of the electrical
problem between panel and heater.
No No
No No
Is the light burnt out?
If so, replace.
Is the igniter
physically
damaged?
Is the blower
obstructed?
Yes
Remove obstruction
and lubricate fan.
Is the inlet or the outlet of
the unit obstructed (i.e.,
ice, birds nest, dirt, etc.)?
Yes
Remove obstruction.
Check voltage at igniter during
ignition sequence (usually 3045 seconds after power to the
heater). Is it 120V?
No
No
Yes
Yes
Does valve light
energize?
Yes
Does valve open?
Yes
Continued on page 16.
No
No
Yes
Replace igniter.
Does the burner
ignite at all?
Yes
Replace faulty light.
Test for 120V at valve opening
period (usually 30 to 45 seconds
after power to heater). Is there
120V to valve for 8 seconds?
No
Replace circuit board.
No
The circuit board and/or wiring
harness may be faulty and
needs to be replaced.
No
Replace circuit board and/or wiring harness.
Yes
14
DX3 Series
4.0 Troubleshooting Guide
NOTICE
Is 120V coming
to the fan?
Yes
The fan is faulty
and must be
replaced.
Check for loose wiring
or resistance in hose
connection to pressure
switch. Are they ok?
No
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.
Key
No
Correct
wiring.
Yes
Start
Question
No
The heater is equipped with a safety pressure
switch. This differential switch, located in the controls
compartment, is a normally open pressure switch.
Temporarily place jumpers across the terminals of the
switch. Does the light energize?
Process
Question
Corrective
Action
Replace faulty light.
Yes
Repair.
Is resistance through
the igniter 50-400 Ω ?
No
Replace
igniter.
Check to make sure gas
pressure is within minimum
and maximum inputs, as
indicated on burner rating
plate. Is gas pressure OK?
Yes
Consult
factory.
Yes
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).
If any of the above are occurring, please address the problem.
Replace gas valve.
No
Correct problem.
15
4.0 Troubleshooting Guide
Continued from page 14
DX3 Series
Does the
burner ignite?
Yes
Does the burner
stay on?
Yes
No
No
Is the gas supply
to the heater in
the ON position?
No
Turn o n.
Does the burner stay on
for approx. 8 seconds
and then shut off?
No
Does the burner come
on and turn off
immediately (1 or 2
seconds)?
Yes
Yes
Check to make sure gas pressure is within
minimum and maximum inputs, as indicated on
burner rating plate. Is gas pressure OK?
No
Correct problem.
Yes
Check to make sure gas pressure
is within minimum and maximum
inputs, as indicated on the burner
rating plate. Is gas pressure OK?
Yes
Yes
Pressure
switch may
be faulty or
there is a
restriction in
the exhaust.
Does the heater
stay ON until a call
for heat ends?
Yes
Troubleshooting ends
No
No
Correct problem.
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.
16
DX3 Series
4.0 Troubleshooting Guide
Were the gas lines purged of air?
Purge gas line.
Is the heater properly
grounded? Is the heater’s
polarity correct?
No
Correct problem.
Yes
Confirm manifold pressure is
correct and/or gas orifice is not
plugged and is the correct size.
No
With micrometer, check
Yes Yes
amperage at flame rod. Is it
greater than 1.0 microamps?
No
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.
Check to make sure flame
sensor wire is OK. If so,
then replace circuit board.
17
5.0 Parts • Heater Components and Parts List
5.0 Parts
Figure 5.1 • Burner Assembly Components
3094
331
3002A
85
83
76
84
333
24VAO
Internal Relay Option
1325*
25*
329*
832*
3060
3099
245
3008
3040, 3041
212
352A
264D/E/F,1264A
3033D*/E
68B
70
351A
3044
331
219
3010
3098
70A
332
31D
204
3093
3096A
1018
309 7A
3011
3012
3001
10A
222
206
217
50
3005A
9
3072, 3071, 201B
55A
205
3094
DX3 Series
21B
221
383
321
3380
14
15
5
16
17
328
3014
3004
3003A
Chart 5.1 • Parts List
Part # Description Part # Description
TP-5 Flange Gasket TP-70 1/2” x 10” Control Box Gasket
TP-9 3/4” E.M.T. Conduit Coupling TP-70A 1” x 6” Manifold Gasket
TP-10A 3 /4” x 4” E.M.T. Conduit TP-76 Rubber Grommet
TP-14 Sight Glass Gasket TP-82 Reflector Center Support
TP-15 Sight Glass TP-83 1/2” x 24” C.S.S.T. Flexible Gas Connector
TP-16 Sight Glass Washer TP-84 1/2” N.P.T (Female) to Male Flare Fitting
TP-17 Sight Glass Kit TP-85 1/2” N.P.T. (Male) to Male Flare Fitting
TP-19 B 4” Wire Hanger with Tension Spring TP-10 5 Aluminum Reflector End Cap
TP-20C 10 ft. Polished Aluminum Reflector TP-10 6 Reflector End Cap Clips
TP-20D* 120 in. Stainless Steel Reflector TP-113 Reflector Tension Spring
TP-21B 4” Standard Tube Clamp TP-201B V.3 Mid Burner (Color Code - TAN)
TP-25* 1/4” Female Spade Terminal ( Qty. 2 ) TP-204 Gas Orifice (consult factory)
TP-26A 10 ft. Aluminized Radiant / Combustion Tube TP-205 Glo-Bar™ Holder
TP-26B 10 ft. Titanium Stabilized Combustion Tube TP-206 Glo-Bar™ Holder Spring Clip
TP-26D* 10 ft. 304 Stainless Steel Radiant Tube TP-212 1/2” N.P.T. x 3” Pipe Nipple
TP-26E* 10 ft. 409 Stainless Steel Combustion Tube TP-217 1/8” N.P.T. Brass Barb Fitting
TP-31D Interlocking Mounting Bracket
TP-50 Glo-Bar™ Igniter TP-220 Stainless Steel Tube Clamp (150- 200 MBH)
TP-55A Fan Blower TP-221 Glo-Bar™ Holder Gasket
TP-65I 3 ft. Interlocking Turbulator Baffle TP-222 Flame Rod
TP-68B 1/2” Strain Relief Bushing TP-245 1/8” Plastic N.P.T. 90° Barb Fitting
* Optional upgrade or add-on item.
(Q t y. 2) TP-219 12” Pneumatic Tube for Pressure Switch
(RCS)
(8 pcs.)
18
DX3 Series
Figure 5.2 • Tube & Reflector Components
5.0 Parts • Heater Components and Parts List
20C/D*
105
106
82
113
19B
579
105
26A/D*
26A/B/E*
21B, 220
65I
Part No. Description Part No. Description
TP-264D Differential Pressure Switch, 60 to 75 MBH TP-3005A Plastic Valve Chamber Lid
TP-264E Differential Pressure Switch, 50 MBH TP-3008 Gas Valve Mounting Bracket
TP-264F Differential Pressure Switch, 150 to 200 MBH TP-3010 Service Panel Hinge
TP-321 Ignition Plate Gasket TP- 3 011 Igniter Box
TP-328 120VAC Yellow Indicator Light
TP-329* 1/4” Male Spade Terminal Block TP-3014 Plastic Air Orifice with Screen
TP-331 Green Self-Tap Ground Screw
TP-332 1/4” Divider Grommet TP-3033E DX3 Power Entry Plate
TP-333 6 ft. Black Power Cord w/ Ground TP-3040 Gas Valve - Natural Gas
TP-351A Potted Circuit Board TP-3041 Gas Valve - LP Gas
TP-352A Wire Harness for Ignition Controller TP-3044 Gas Manifold
TP-383 Glo-Bar™ Igniter Plate TP-3060 Pressure Switch Mounting Bracket
TP-579 4” Wire Hanger w/o Tension Spring TP-3071 High BTU Burner (Color Code - PURPLE)
TP-832* Thermostat Terminal Strip TP-3072 Low BTU Burner (Color Code - GREEN)
TP-1018 20” Pneumatic Tube for Pressure Switch TP-3093 #8-23 Cage Nut
TP-1264A Differential Pressure Switch, 100 to 125 MBH TP-3094A #8-32 x ½” Metal Thumb Screw (Qty. 4)
TP-13 2 5* 24V Coil Relay TP-3096A Valve Compartment Bottom Panel
TP-3001 Divider Panel TP-3097A Valve Compartment Top Panel
TP-3002A Plastic End Panel, Control Compartment TP-3098 Valve Compartment Side Panel
TP-3003A Plastic End Panel, Fan Compartment TP-3099 Controls Mounting Panel
TP-3004 Control Box TP-3380 16” HSI Burner Tube w/Flange and Fittings
* Optional upgrade or add-on item.
(Q t y. 2) TP-3 012 Igniter Box Cover
(Q t y. 2) TP-3033D* Power Entry Plate*
(Qt y. 4)
19
5.0 Parts • Kit Contents Check List
!
Replaces:LIOGT3-3M-8/10 (CDS)
Replaces: LIODX3-2M-9/09(CDS)
Kit Contents Check List
Chart 5.2 • Kit Contents for DX3 Series - Reference the length column for your model.
DX3 Series Kit Contents
DX3 Series
TP-19B 4” Hanger with
Reflector Tension Spring
TP-82 4” Reflector
Center Support (RCS)
**TP-19C
TP-83 24” Stainless Steel
TP-21B 4” Tube Clamp
Flexible Gas Connector
**TP-83A
Part No.
Description
TP-19B 4” Hanger w/ Tension Spring
TP-21B 4” Tube Clamp
TP-82 4” Reflector Center Support
TP-83 24” S.S. Flexible Gas Connector
TP-105 Reflector End Cap
TP-106 Reflector End Cap Clips
LIOGT3 General Tube Heater Manual
LIODX3 DX3 Series Insert Manual
**TP-829
**TP-220
TP-105 Reflector End Cap
**TP-10 5A
LIOGT3 Tube Heater
General Manual
Detroit Radiant Products Co.
Tub e He ater
General Manual
To be used in conjunction with Series 3 insert manuals.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read and understand the installation, operating 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 and/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.
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.
Form: LIOGT3-10211
Print:5M-4/11-r1_10/28/11(CDS)
20 ft. 30 ft. 40 ft. 50 ft. 60 ft. 70 ft. 80 ft.
3 4 5 6 7 8 9
2 3 4* 5* 6* 7* 8*
2 3 4 5 6 7 8
1 1 1 1
2 2 2 2 2 2 2
8 8 8 8 8 8 8
1 1 1 1 1 1 1
1 1 1 1 1 1 1
Additional kit contents as supplied when heater is configured with Add-On Options (if applicable)
TP-25 1/4” Female Spade Terminal (24VAO)
2 2 2 2 2 2 2
TP-10 6 Reflector
End Cap Clips
LIODX3 DX3 Series
Insert Manual
DX3 Series
Insert Manual
For complete installation instructions, see the Tube Heater General Manual
that accompanies this insert manual.
The DX3 Series Infrared 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 DX3 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.
!
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.
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.
LIODX3-Rev. 00312
1M-8/10_r5-1/4/12(CDS)
1 1 1
Filled By:
* NOTE: One 4” stainless steel tube clamp (P/N: TP-220) is provided for each 150,000 - 200,000 BTU/h model.
Place as shown on page 11.
** Part number for models upgraded with stainless steel options.
Approvals
• CSA.
• Indoor approval.
• Outdoor approval with OD-Kit.
• Commercial approval.
Phone: (586) 756-0950 Fax: (586) 756-2626
www.detroitradiant.com • sales@drp-co.com
Printed in U. S. A.
Limited Warranty
• 1 year - Burner box components.
• 5 years - Combustion and radiant tubes.
• 10 years - Stainless steel burner.
• See page 36 of the General Tube Heater Manual
for terms and conditions.
© 2013 Detroit Radiant Products Co.
21400 Hoover Road • Warren, MI 48089
20
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