Detroit Radiant LD Series Installation manual

LD Series
Installation Manual
The LD Series Infrared Tube Heater is a positive pressure, two stage radiant heater system. This
manual provides specific information related to the LD Series model. All persons involved with the
installation, operation and maintenance of the heater system must read and understand the information
in this manual.
!
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read the installation, operation and maintenance
instructions thoroughly before installing or servicing this equipment.
This heater must be installed and serviced by trained gas installation and service
personnel only. Failure to comply could result in personal injury, asphyxiation, death,
fire or property damage.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.
In locations used for the storage of combustible materials, signs must be posted to
specify the maximum permissible stacking height to maintain the required clearances
from the heater to the combustibles. Signs must either be posted adjacent to the
heater thermostats or in the absence of such thermostats, in a conspicuous location.
Do not use this heater in indoor living or sleeping quarters, etc.! Installation of
a tube heater system in residential indoor living spaces may result in property damage,
serious injury, asphyxiation or death.
For Your Safety
If you smell gas:
• Do not try to light any appliance. • Immediately call your gas supplier from a neighbor’s phone.
• Do not touch any electrical switch.
• Follow the gas supplier’s instructions.
• Do not use any phone in your building. • If you cannot reach your gas supplier, call the fire department.
Keep these instructions for future reference.
LIOLD-Rev. 34512
Print: 1M-5/12_r4-1/13(DRP)
Replaces: LIOLD-2M-11/09(CDS)
LD Series
1.0 Introduction • Table of Contents
Contents
1.0Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Signs and Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.0 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Warning Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Standards, Certifications and Government Regulations . . . . . . . . . . . . . . . . . . . . . . . . 7
Clearance to Combustibles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Design Considerations and Prechecks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Recommended Mounting Heights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Hanger Placement and Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Radiant Tube Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Optional Elbow or U-Bend Accessory Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Burner Control Box Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reflector Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Baffle Assembly and Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Final Heater Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Sidewall Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Rooftop Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Optional Unvented Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Combustion Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Electrical Requirements and Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Lighting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Heater Components and Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Maintenance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
2
LD Series
1.0 Introduction • Overview • Heater Components • Specifications
1.0 Introduction
Overview
The intent of this manual is to provide information regarding safety, design guidelines, installation,
operation and maintenance of the tube heater. You must read and understand the instructions and all
safety warnings before installing the tube heater.
Heater Components
Prior to installation, verify that the heater’s gas type and voltage (as listed on the rating plate) match
that of your application. Also verify that you have received all heater contents included with your tube
heater. Reference page 48 for a list of the kit contents for your model heater. Materials not included in
the heater kit contents (e.g., screws, vent material, terminals, etc.) are the responsibility of the installer.
Notify your product representative or Detroit Radiant Products of any discrepancy or missing kit
contents prior to installing unit.
Specifications
Model
Number
Gas Type
(select one)
BTU/h
(High Fire)
BTU/h
(Low Fire)
Straight Length
U-Tube Length
Standard
Weight (lbs.)
Recommended
Mounting Height**
Combustion Chamber
(Black Coated)
Radiant Emitter Tube(s)
(Black Coated)
Residential
Certification^
Chart 1.1 • LD Series Specifications
LD-10-40
N or LP
40,000
28,000
12’-1”
N/A
70 lbs.
10’ to 14’
Titan
Alum
No
LD-15-40
N or LP
40,000
28,000
16’-10”
N/A
85 lbs.
8’ to 13’
Titan
Alum
Yes
LD-15-50
N or LP
50,000
35,000
16’-10”
N/A
85 lbs.
10’ to 15’
Titan
Alum
No
LD-20-40
N or LP
40,000
28,000
21’-10”
13’-0”
100 lbs.
8’ to 13’
Titan
Alum
Yes
LD-20-50
N or LP
50,000
35,000
21’-10”
13’-0”
100 lbs.
9’ to 15’
Titan
Alum
No
LD-30-50*
N or LP
50,000
35,000
31’-7”
17’-8”
120 lbs.
9’ to 14’
Titan
Alum
Yes
* Model requires DB-5EA-SUB optional accessory package when installing in a ‘U’ configuration (P/N: DB-TF1B).
**Recommended mounting heights are provided as a guideline. Actual conditions may dictate variations from this data. Optional protective guard (P/N: PG) is required when mounting below 8-ft.
^ Certified models may be installed in attached residential garages/workshops.
Titan = Black coated titanium stabilized aluminized steel.
Alum = Black coated aluminized treated steel.
3
LD Series
1.0 Introduction • Safety Signs and Labels
!
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.
Safety Signs and Labels
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 Co. or an authorized dealer for Clearance Safety
Limit Signs or for Clearance Safety Limit Tags (one tag is provided with each heater).
SERVICE ACCESS PANEL
IGNITER & FLAME SENSE COMPARTMENT
1. Turn off gas & electricity.
2. Remove cover by lifting top
cover upward and outward.
!
INSTALLER
AVOID EQUIPMENT FAILURE
THIS 10 FT. TUBE IS THE
COMBUSTION CHAMBER.
CAUTION: HOT SURFACE.
KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.
F/N: LLTB026
The combustion chamber utilizes either 409
stainless, titanium alloy or aluminized steel depending on the model number of your heater.
THIS TUBE MUST BE THE FIRST TUBE
FOLLOWING THE BURNER CONTROL BOX.
Right Panel
Rotate the tube’s welded seam to bottom.
Consult the manual(s) for further details.
(Valve Compartment)
F/N: LLTB004
(orange)
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.
16” Burner Tube
Al-Ti Combustion
Chamber
Aluminized
Radiant Tube(s)
(if applicable)
F/N: LL01 - Clearance Safety Tag
(Affix adjacent to heater’s thermostat)
F/N: LLTCL002
Lighting Instructions
4
LD Series
1.0 Introduction • Safety Signs and Labels
SAMPLE
TP-114
TP-3014
Air Metering Orifice
DO NOT REMOVE
F/N: LLAC
Air Metering Orifice
1 - 1/2"
DETROIT RADIANT INFRA-RED RADIANT TUBE HEATER
DETROIT RADIANT INFRA-RED RADIANT TUBE HEATER
FOR OUTDOOR USE AND INDOOR (Non-Residential) INSTALLATION ONLY.
Class IIIA Permanent Label
MODEL NO.
HOT
120V
LD-20-40N
NEUTRAL
Volts AC:
EARTH
120V - 60Hz
AMPS - Starting:
- 120V HEATER INPUT -
4.8
INPUT BTU/H
Natural Gas
Heater Type
C1
3.5 Inches W.C.
Maximum Inlet Pressure:
Minimum Mounting Angle:
0
14 Inches W.C.
AMPS - Running:
1.1
FOR INDOOR INSTALLATION ONLY.
Class IIIA Permanent Label
FOR USE WITH
40,000
Manifold Pressure:
Minimum Inlet Pressure:
MODEL NO.
DEGREES
INPUT BTU/H
LD-20-40N
Maximum Mounting Angle:
45 DEGREES
5.0 Inches W.C.
Combustion Chamber:
FOR USE WITH
40,000
Natural Gas
4” Uncoated Aluminized
3
DESIGN COMPLIES WITH:
Volts AC:
ANSI Z83.20-2008-GAS FIRED LOW INTENSITY INFRA-RED HTR.
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI
(586) 756-0950
www.drp-co.com
Serial No.: 0807XXXXXXXXXX 0001
Manifold Pressure:
120V - 60Hz
3.5 in.
AMPS - Starting:
Maximum Inlet Pressure:
4.8
14 in.
AMPS - Running:
120V
NEUTRAL
AM
5.0 in.
Combustion Chamber:
S
4” Black Coated Aluminized
DESIGN COMPLIES WITH:
F/N: LLTB018 (NG)
F/N: LLTB019 (LP)
HOT
W.C.P.
Minimum Inlet Pressure:
1.1
Back Panel
E
PL
W.C.P.
W.C.P.
Heater Type
C1
Minimum Mounting Angle:
0
DEGREES
Maximum Mounting Angle:
45 DEGREES
ANSI Z83.20b-2003-GAS FIRED LOW INTENSITY INFRA-RED HTR.
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI
(586) 756-0950
www.drp-co.com
Serial No.: 0807XXXXXXXXXX 0001
F/N: LLDR003
EARTH
Rating Plate
(Models with optional
relay board installed only)
- 120V HEATER INPUT -
F/N: LLV3EP1
! CAUTION
Provide 24
Volts Only
This heater has a 24 Volt
control system. Do not
connect 120 Volt power
supply, as it will damage
the controls.
HIGH
24V
LOW
24V OUT
- 24V HEATER OUTPUT -
F/N: LLV3EP4
Left Panel
F/N: LLV3EP2
White Crescent
(Fan Compartment)
This heater is equipped with an
HLRB Relay(s) required for grouping
multiple heaters on the same
thermostat. This heater must be wired with a
field supplied transformer in accordance with
the installation, operation manual.
Orange Crescent
(Models with optional
relay board installed
only).
F/N: LLV2EP9
F/N: LLTB031
(Models with optional relay
board installed only).
Top Panel
LED CODE
FAULT STATUS
FAULT CODE DELAY
Initial Flash on power up,
then steady off
Normal operation
Immediate
Steady on
Module failure/Internal fault
Immediate
1 flash
Ignition failure
32 minutes
2 flashes
APS 1 failure
12 minutes
3 flashes
APS 2 failure
22 minutes
4 flashes
Solenoid valve fault/Leaky valve/
Flame amplifier fault
Immediate
No flash on 117V start-up
Transformer fault
Immediate
F/N: LLTB007(1)
Bottom Panel
LD-20-40 N
Production Code:
Version: 5.05
Serial No.: 0804XXXXXXXXXX 0001
Stock:
Add-On:
LD-40
None
F/N: LLTCL006 - Clearance
to Combustibles Label.
N/A
E
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: (Specify TP-#’s)
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
36E96-224-N
Micro 60-24
3 PCS Harness
None
None
None
None
IS22016051F5169
Grey (+ / -)
Norton
High
4” Gen.
Yellow - 120V
840A
851
852
N/A
SA
Orifice Type:
Gas: TP-204#
Air: TP-44#
N/A
264E
M
50
201B
1080
828
PL
Diag. Light:
Term. Block:
Transformer:
Fan:
Alt. Fan:
Alt. Fan Usage:
Relay:
Filter:
24 Volt In:
120 Volt In:
Gas In:
Extra VL Orifice:
Red LED
None
40 VA
Fasco Lg.
50Hz - 120V
When Specified
None
None
3 T-plug
120V Cord
7/8” FC Flare
None
C1
C2
C3
Internal Use Only:
3
1 1/2”
3
1 5/8”
1
1 5/8”
Electric: LLWT038
Tag:
None
N/A
N/A
55A
55B
N/A
N/A
832
333
83
Special 1: 17
Special 2: 1 7/16”
For parts replacement information, contact factory at 586-756-0950 or visit www.drp-co.com/parts.
Burner Control Box Component Label
F/N: LLLOGO
(located under the top panel)
5
LD Series
2.0 Safety • Warning Symbols • Applications
2.0 Safety
!
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.
Warning Symbols
Safety is the most important consideration during installation, operation and maintenance of the tube
heater. You will see the following symbols and signal words when there is a hazard related to safety or
property damage.
!
!
WARNING
Warning indicates a potentially hazardous situation
which, if not avoided, could result in death or injury.
CAUTION
Caution indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury.
NOTICE
Notice indicates a potentially hazardous situation
which, if not avoided, could result in property
damage.
!
CAUTION
Children and adults should be alerted to the hazards of high surface temperatures and should stay away
to avoid burns or clothing ignition.
Young children should be carefully supervised when they are in the same space as the heater.
Clothing or other flammable materials should not be hung from the heater, or placed on or near the heater.
Any guard or other protective device removed for servicing the heater must be replaced prior to operating
the heater.
Installation and repair should be done by a qualified service person. The heater should be inspected
before use and at least annually by a qualified service person. More frequent cleaning may be required
as necessary. It is imperative that the control compartment, air passageways and burner(s) of the heater
be kept clean.
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.
6
LD Series
2.0 Safety • Applications • Standards, Certifications and Regulations
Commercial / Industrial Applications
Unless otherwise indicated, tube heaters are designed and certified for use in industrial and commercial
buildings, such as warehouses, manufacturing plants, aircraft hangars and vehicle maintenance shops.
For maximum safety the building must be evaluated for potential problems before installing the heating
system. A critical safety factor to consider before installation is the clearance to combustibles.
Residential Applications
Only select LD Series models are Design Certified under CSA Requirements for residential radiant tube
heaters (No. 7-89). Not for use in the residential indoor living areas or sleeping quarters.
!
WARNING
Not For Use in Indoor Living Spaces. Installing this unit in residential indoor living spaces or sleeping
quarters, such as bedrooms or basements, may result in property damage, serious injury or death.
Standards, Certifications and Government Regulations
Installation of this tube heater must conform with all applicable local, state and national specifications,
regulations and building codes. Contact the local building inspector and/or fire 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
Public Garages:
This heater must be installed in accordance with the latest edition of the Standard for Parking
Structures, ANSI/NFPA 88A or the Code for Motor Fuel Dispensing Facilities and Repair Garages
ANSI/NFPA 30A. In Canada, refer to CAN/CGA B149.1 and B149.2.
• Heaters must not be installed less than 8 ft. (2.4 m) above the floor. Minimum clearances to combustibles must be maintained from vehicles parked below the heater.
• When installed over hoists, minimum clearances to combustibles must be maintained from the upper most point of objects on the hoist.
Aircraft Hangars:
This heater must be installed in accordance with the latest edition of the Standard for Aircraft Hangars,
ANSI/NFPA 409. In Canada, refer to CAN/CGA B149.1 and B149.2.
• In aircraft storage and servicing areas, heaters shall be installed at least 10 ft. from above the upper surface of wings or of the engine enclosures of the highest aircraft that may be housed in the hangar. The measurement shall be made from the wing or engine enclosure, whichever is higher from the floor, to the bottom of the heater.
• In areas adjoining the aircraft storage area (e.g., shops, offices) the bottom of heaters shall be installed no less than 8 ft. (2.4 m) above the floor.
• Suspended or elevated heaters shall be located in spaces where they shall not be subject to damage by aircraft, cranes, movable scaffolding or other objects.
Provisions shall be made to assure accessibility to suspended tube heaters for recurrent maintenance
purposes.
7
LD Series
2.0 Safety • Clearance to Combustibles
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 vapor in
the vicinity the heater.
Hazards:
For maximum safety the building must be evaluated for hazards before installing the heating system.
Examples include, but are not limited to:
• Gas and electrical lines
• Combustible and explosive materials
• Chemical storage areas
• Areas of high chemical fume concentrations
• Provisions for accessibility to the heater
• Adequate clearances around air openings
• Combustion and ventilating air supply
• Vehicle parking areas
• Vehicles with lifts or cranes
• Storage areas with stacked materials
• Lights
• Sprinkler heads
• Overhead doors and tracks
• Dirty, contaminated environment
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:
Combustible items: Moving Objects:
• Wood
• Paper
• Fabric
• Chemicals
• Overhead doors
• Vehicle lifts
• Cranes
• Hoists
• Paint
• Parked vehicles
• Gasoline
• Storage racks
When installing the tube heating system, the minimum clearances to combustibles for your Series tube
heater and system configuration must be maintained. These distances are shown in Chart 1.1 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.
The stated clearance to combustibles represents a surface temperature of 90ºF (32ºC) 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.
8
LD Series
2.0 Safety • Clearance to Combustibles
!
WARNING
Failure to comply with the stated clearances to combustibles may result in
in personal injury, property damage and/or death.
Chart 1.1 • Clearance to Combustibles in Inches (see Figure 1.1 for Mounting Angles)
Mounting
Angle*
Model Number
Sides
Front
40,000 BTU/H MODELS
0°
15
45°
58
0°
42
0°
20
0°
N/A
50,000 BTU/H MODELS
0°
11
45°
39
0°
29
0°
16
0°
7
LD (10, 15, 20) - 40 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
LD (15, 20, 30) - 50 [N, P]
with 1 side shield
with 2 side shields
20 ft. from burner
Behind
Top
Below
15
8
8
20
N/A
6
10
6
6
N/A
45
45
45
45
N/A
11
8
8
16
7
6
10
6
6
6
48
48
48
48
30
* Heaters mounted on an angle between 0° to 45° must maintain clearances posted for 0° or 45°; whichever is greater.
NOTE: Use high BTU output when determining clearances. The minimum end clearance is 12 in.
Figure 1.1 • Mounting Angles
0° Mounting Angle
45° Mounting Angle
Top
Top
Side
Side
Below
Behind
Front
0° Mounting Angle
with 1 Side Shield
(P/N: SSE)
Top
Behind
Front
Below
Below
9
0° Mounting Angle
with 2 Side Shields
(P/N: SSE)
Top
Side
Side
Below
LD Series
3.0 Installation • Design Considerations and Prechecks
3.0 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.
Design Considerations and Prechecks
Placement of infrared heaters is influenced by many factors. Aside from safety factors, considerations
such as the number of heater or vent elbows that are allowed, maximum vent lengths, ducting of
combustion air and combining exhaust vents are a few examples. All installation manuals, along with
national, state, provincial and local codes, address these issues. It is critical that you read, understand
and follow all guidelines and instructions.
To ensure a properly designed heating system, a layout should be developed for the correct placement of
the burner control box, tubes, vents and combustion air intake ducts. Inspect and evaluate the mounting
conditions, vent locations, gas supply and wiring.
When designing an infrared radiant heating system, consider the following:
• Has the building’s heat loss been evaluated?
• Does the design meet the needs of the space?
• Have recommended mounting heights been observed?
• Have all clearance to combustible situations been observed?
• Is the supply (burner) end of the heater located where more heat is required?
• Is it best to offset the heaters and/or rotate the reflectors towards the heat zone?
• Are extra guards, side shields, ‘U’ or ‘L’ reflector covers required?
• Does the heater require outside fresh air for combustion?
• Is the environment harsh or contaminated (requiring outside air for combustion)?
• Are chemicals or vapors a concern (requiring outside air for combustion or additional ventilation)?
IMPORTANT: Fire sprinkler heads must be located at an appropriate distance from the heater. This
distance may exceed the published clearance to combustibles as posted on the heater. Certain
applications may require the use of high temperature sprinkler heads or relocation of the heaters.
Sprinkler systems containing propylene glycol or other flammable substances are not to be used in
conjunction with this heater without careful consideration for and avoidance of potential fire or explosion
hazards. For further information consult NFPA 13.
The effective infrared surface temperature of a person or object may be diminished with wind above 5
mph. The use of adequate wind barrier(s) may be required.
10
LD Series
3.0 Installation • Recommended Mounting Heights
Chart 3.1 • Recommended Mounting Heights and Coverages
Distance Between
Heaters (ft.)
Dimension A
Distance Between
Heater Rows (ft.)
Dimension B
Maximum Distance
Between Heaters
and Wall (ft.)
Dimension C
30 ft.
Coverage Area
U-Tube Congfig.
(LxW)
20 ft.
Coverage Area
Straight Config.
(LxW)
15 ft.
Recommended
Mounting Height (ft.)*
10 ft.
25,000
8’ - 11’
20’ x 12’
N/A
10’ - 20’
20’ - 40’
16’
30,000
8’ - 11’
20’ x 12’
N/A
10’ - 20’
20’ - 40’
16’
40,000
10’ - 14’
20’ x 12’
N/A
10’ - 20’
20’ - 40’
16’
40,000
8’ - 13’
20’ x 12’
N/A
10’ - 20’
20’ - 40’
16’
50,000
10’ - 15’
22’ x 15’
N/A
20’ - 30’
30’ - 50’
18’
40,000
8’ - 13’
20’ x 13’
12’ x 12’
10’ - 20’
20’ - 40’
16’
50,000
9’ - 15’
22’ x 15’
12’ x 12’
20’ - 30’
30’ - 50’
18’
50,000
9’ - 14’
32’ x 15’
15’ x 15’
20’ - 30’
30’ - 50’
18’
BTU/h Output
Model
NOTE: This chart is provided as a guideline. Actual conditions may dictate variation from this data.
Factory recommended mounting heights are listed as a guideline. If infrared heaters are mounted to low
or to high, they may result in discomfort or lack of heat. Detroit Radiant Products Company generally
recommends observing the recommended mounting heights to optimize comfort conditions. However,
certain applications such as spot heating, freeze protection, outdoor patio heating or very high ceilings
may result in the heaters being mounted outside of the factory recommended mounting heights.
* Optional protective guard (P/N: PG) is required when mounting below 8-ft.
Figure 3.3 • Mounting Height Dimensions • see chart 3.1 for dimensions
Dimension A
Dimension B
Distance between
heater rows
Dimension A
Dimension C
Maximum
distance
between
heater
and wall
Dimension C
Maximum distance between heater and wall
Note: Dimensions A, B & C are based upon heaters hung at the factory recommended mounting height.
11
LD Series
3.0 Installation • Hanger Placement and Suspension
Hanger Placement and Suspension
!
WARNING
Improper suspension of the tube heater may result in collapse and being crushed. Always
suspend from a permanent part of the building structure that can evenly support the total
force and weight of the heater.
Failure to maintain minimum clearance to combustibles may result in fire and/or explosion,
property damage, serious injury or death. Always maintain minimum clearances and post
clearance safety limit signs or the clearance safety tag where needed.
Suspension of the heater must conform to applicable codes referenced in the Safety section and
these instructions.
1 Lay all radiant tubing out in the following order. Position tubes in approximate location (see Figures 3.4
and 3.14).
• 10 ft. 4” to 3” O.D. titanium treated combustion chamber (TP-1088).
• 3” O.D. aluminized radiant emitter tube(s) if applicable.
2Connect the female end of the titanium combustion chamber (TP-1088) to the 16” burner tube by
using the 4” stainless steel tube clamp (TP-220).
Important! The 10 ft. 4” to 3” O.D. tianium alloy treated combustion chamber must be placed as
the first tube downstream of the burner control box. The combustion chamber has an orange
identification sticker located on the swaged end of the tube.
3Place a 4” tube hanger (TP-19B) on the tapered titanium combustion chamber’s 4” O.D. end. The
spacing between the burner control box mounting brackets and the 4” tube hanger should be 2’-4”.
4 Mark locations for hanging points.
NOTE: If the available hanging points do not allow for the recommended spacing then additional
hangers (P/N: TP-1079) may be necessary.
• The spacing between the burner control box mounting brackets and the first hanger should be approximately 2’-4”.
• The space between the first two hangers placed on the first tube, should be approximately 8’-10”.
• The space between hangers thereafter, one per tube, should be approximately 9’-8”.
12
LD Series
3.0 Installation • Hanger Placement and Suspension
Figure 3.4 • Heater Mounting Layout
Suspension
Point
NOTE: A sticker identifying the
titanium treated combustion
chamber(s) is located on the swaged
end of the tube(s).
8
9’
Suspension
Point
Burner Control Box
Suspension Points
2’
Suspension
Point
”
10
8’
8
9’
”
3” Tube Clamp
(TP-1079)
4”
”
3” O.D. Aluminized
Steel Radiant Emitter
Tube(s) (if applicable)
3” Tube Hanger (TP-19B)
16” Burner
Tube
10 ft. 4” to 3” O.D. Tapered Titanium
Treated Combustion Chamber
(TP-1088)
4” Tube Hanger (TP-19B)
Burner
Control Box
4” Stainless Steel
Tube Clamp (TP-220)
Igniter/
Sensor Box
Model
Dimension*
Straight Configuration
Suspension Points
Control Box Stabilizer
Shipping Weight
Chain Set Qty.
Straight
Chain Set Qty.
w/TF1B
Optional Brass
Knuckle (P/N:BK)
Optional Single
Mount Bracket
Chart 3.2 • Heater Mounting Requirements and Weights
10 ft.
12’-1” / 145”
2
2
70 lbs.
4
5
2
1
15 ft.
16’-10” / 202”
2
2
85 lbs.
5
6
3
N/A
20 ft.
21’-10” / 262”
3
2
100 lbs.
5
6
3
2
30 ft.
31’-7” / 379”
4
2
120 lbs.
6
7
4
N/A
* Refer to page 18 for U-bend configuration dimensions.
13
LD Series
3.0 Installation • Hanger Placement and Suspension
3 Prepare mounting surface, if necessary weld blocks, drill holes (see figure 3.5).
NOTE: The burner control box and radiant tubes should be in straight alignment and level.
4 Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.
5Attach and close S-hook (P/N: S-Hook) and #1 double-loop chain (P/N: THCS) to anchor. Check that
it is securely attached. NOTE: Threaded rod and turnbuckles may be used.
6Attach hangers to chains. Adjust chain lengths until radiant tubing is level and equal weight distribution
is achieved. Chains must be straight up and down. Do not install chains at an angle as this can result
in tube warpage or separation.
Figure 3.5 • Mounting the Hangers
3 I-Beam
3 I-Beam
4 Beam Clamp
4 Beam Clamp
6 Threaded Rod
5
5 Threaded Rod
and Turnbuckle
S-Hook and
#1 Double-Loop Chain
6 Chain
3 Concrete Beam
3 Wood Beam
4 Screw Hook
4
Screw hook
with Locknut
and Washer
6 Chain
6 Chain
14
LD Series
3.0 Installation • Hanger Placement and Suspension
Figure 3.6 • U-Tube Hanger Mounting Options
Single Mounting
Bracket
Brass Knuckle
Exhaust
End
U-Tubes can be mounted from a single suspension
point using an optional Single Mounting Bracket
(P/N: SMB) with five S-hooks and #1 double-loop
chains.
U-Tubes can be mounted at a 15, 30 or 45 degree
angle with two suspension points, using two optional
Brass Knuckle (P/N: BK) fittings, #1 double-loop
chains and S-hooks.
Figure 3.7 • Angled Hanger Mounting Options
45°
30°
For 45 degree hanging angle use two
S-hooks and two #1 double-loop chains.
15°
For variety of hanging angles, use an optional
Brass Knuckle (P/N: BK) fitting with a #1 doubleloop chain and S-hook.
15
LD Series
3.0 Installation • Radiant Tube Assembly
Radiant Tube Assembly
To install the radiant tubes:
1 Place tubes in hangers with the welded seam facing downward and the swaged end of the tube
towards the exhaust end of the heater system (see Figure 3.8).
Refer to page 23 for tube installation sequence.
Figure 3.8 • Attach Hangers
Swaged End
Radiant Tube
Hanger
Welded seam
faces down
2 Slide tube clamps onto radiant tubes (see figure 3.9).
Figure 3.9 • Attach Tube Clamps
Concave surface
Tube Clamp
NOTE: If the tube clamp comes apart, the spacer must be
re-assembled with the spacer’s concave surface facing against
the radiant tube surface.
16
LD Series
3.0 Installation • Tubes: Optional Elbow or U-Bend Accessory Configuration
3Slip-fit the radiant tube sections together until tightly connected (install the swaged end of each tube
towards exhaust end). NOTE: If it is difficult to mate the tubes, they may be installed incorrectly.
4 Center tube clamps over the seam where two radiant tube sections connect. If necessary, rotate tube
clamps so they will not interfere with the reflector end caps during expansion and contraction of
the heater.
5 Tighten tube clamp bolts to secure. When proper compression is obtained (40-60 ft-lbs. torque) the
tube seam will create a visible mark on the tube clamp. NOTE: Excessive torque may damage the
tube clamp.
6 Determine the location of the burner control box and note the placement of the mounting chains.
Figure 3.10 • Tube Connections
Tubes fit snuggly together and the
tube clamp is centered over the seam.
The tube clamp is tight when the
torque is achieved (normally
when seam becomes visible).
Correct Tube Connection
Tubes are not fit snuggly
together and the tube clamp is
not centered over the seam.
Incorrect Tube Connection
Optional Elbow or U-Bend Accessory Configuration
A 90 degree elbow or 180 degree U-bend accessory fitting may be installed in the radiant tube heating
system. Refer to Chart 3.3 for minimum distance requirements from the burner control box.
When installing an Elbow or U-Bend Accessory Fitting:
• The top clearance of an uncovered (no reflector) elbow or U-bend accessory fitting to combustibles
is 18 in.
• If operating the heater un-vented, separate the intake air to the heater from its exhaust products a minimum of 4 ft., further separation may be necessary. Combustion air may also be supplied.
• A maximum of two 90° elbows or one 180° U-bend can be installed on a heater.
Figure 3.11 • Optional Tube Connections
180 Degree
3” U-Bend
(P/N: DB-TF1B)
90 Degree 3” Elbow
(P/N: DB-E6)
17
LD Series
3.0 Installation • Optional Elbow or U-Bend Accessory Configuration
Figure 3.12 • Elbow and U-Bend Clearances
Elbow can be set
in both directions
Dimension A
Tube Clamp
Tube Clamp
U-Bend can be set in both directions
Dimension A
Tube Clamp
12”
Tube Clamp
8”
Dimension B
Figure 3.13 • U-Bend and Elbow Dimensions
11.5”
16”
6”
11.5”
15”
18”
P/N: DB-E6 (3”)
10”
P/N: DB-TF1B (3”)
20”
Chart 3.3
Minimum Distance From Burner
Control Box to Elbow or U-bend
Accessory Fitting
Chart 3.4
Overall Dimensions for Heaters Configured
With U-Bend (P/N: DB-TF1B)
Model BTU Range
Dimension A
Tube Length
Dimension B
Notes
25,000
N/A
10 ft.
N/A
N/A
30,000
N/A
15 ft.
N/A
N/A
40,000
10 ft.
20 ft.
13’-0” / 156”
N/A
50,000
10 ft.
30 ft.
17’-8” / 212”
Requires P/N: DB-5EA-SUB *
* The DB-5EA-SUB add-on may only be ordered at the time of heater production. Field corrections require two (2) DB-TR-60 packages.
18
LD Series
3.0 Installation • Burner Control Box Suspension
Burner Control Box Suspension
Suspending the burner control box must be done in accordance with applicable codes listed in the Safety
section and these instructions.
The burner control box must be in straight alignment with radiant tubes and level. Contact your local
distributor or the factory to see if your application allows for the rotation of the burner control box.
1 Determine the mounting chain locations for hanging the burner control box.
2 Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.
3 Attach S-hook and #1 double loop chain (P/N: THCS) to anchor. Check that it is securely connected.
4 Attach chain assemblies and S-hooks to mounting brackets on the burner control box. Adjust chain lengths
until level and in straight alignment with radiant tubes. Burner sight glass will be visible from the floor.
Figure 3.14 • Burner Control Box Assembly • Side View
1
2
3
16 in. burner tube is in straight
alignment with combustion chamber
TP-1079 3” Hanger
TP-1088
4” to 3” O.D.
Tapered Tube
TP-1082
3” O.D.
Tube
8.5”
Burner Sight Glass
12”
TP- 1077
3” Tube Clamp
TP-19B
4” Hanger
(bottom side of the tube)
16”
TP- 220
4” Stainless Steel
Tube Clamp
Place welded seam down
Figure 3.15 • Burner Control Box showing U-Shaped Configuration • End View
29.6”
16”
8.1”
3.5”
3”
5”
5.5”
18”
19
LD Series
3.0 Installation • Reflector Assembly
Reflector Assembly
To install the reflectors (see Figure 3.16):
1 Attach the reflector center supports onto radiant tubes.
2 Slide each reflector section through the hangers and adjust the reflector tension spring (if applicable)
into the V-groove on the top of the reflector. The reflectors should overlap approximately 4 inches.
3 To prevent the reflectors from shifting, secure the reflector sections together using sheet metal screws,
except at the expansion joint (see p.23). NOTE: Installer to supply sheet metal screws.
4 Attach reflector end caps with polished finish inward to each end of the reflector run. Secure with clips.
Reflectors and reflector accessories direct infrared energy to the floor level. The reflector assembly
depends on the heater configuration, proximity to combustibles, and space surrounding the heater.
Before you begin assembly, determine if the use of reflector accessories are necessary (see Chart 3.5).
Figure 3.16 • Reflector Assembly
Reflector
Reflector Center
Support
Radiant
Tube
Hanger and
Chain
Place at the
mid-point
of the tube
Reflector
Tension
Spring
4” Overlap
Reflector
End Cap
Clips
20
LD Series
3.0 Installation • Common Reflector Accessories
Chart 3.5
Common Optional Accessories
Reflector Accessory
Description
Part Number
Elbow Reflector*
90° bend, highly polished aluminum reflector elbow
designed to fit atop one elbow accessory fitting. RE
U-Reflector*
180° bend, highly polished aluminum reflector U-bend
designed to fit atop one U-bend accessory fitting.
RU
Side Shield Extension**
Protective Guard
Highly polished side shield extension used to direct infrared rays downward, away from sidewalls and combustibles.
SSE
Used to prevent debris or objects from becoming lodged between the radiant tube and reflector. Required when
mounting heaters below 8 ft.
PG
*
** Reflectors cannot be rotated when used with a reflector elbow (RE), U-shaped reflector (RU), or
side shield (SSE).
Refer to the Clearance to Combustible chart on page 9 for minimum distances to combustibles when side shield extension(s) are used.
Additional accessory options are listed in the Detroit Radiant Products Company Tube Heater Accessory
Guide or online at www.detroitradiant.com.
Figure 3.17 • Reflector Shield Accessories
Elbow reflector (P/N: RE)
Used over a 90-degree
elbow accessory fitting.
U-shaped reflector (P/N: RU)
Used over a U-bend
accessory fitting.
Side shield extension (P/N: SSE)
Directs infrared rays downward, away
from sidewalls and combustibles.
21
LD Series
3.0 Installation • Baffle Assembly and Placement
Baffle Assembly and Placement
To assemble the baffles: NOTE: Baffles may be inserted into the tube while being assembled.
1 Identify one heat baffle (no fins) and two pressure baffles (with fins).
2 Orient the baffle tabs at a 90° angle to the baffle keyhole (see Figure 3.18).
3 Insert one baffle tab into keyhole and slide completely to one side until both baffle tabs appear in
the keyhole.
4 Adjust the tabs to the center of the keyhole and rotate the baffle 90 degrees to lock the baffle
sections together.
5 Repeat this process until all three baffle sections are connected.
Figure 3.18 • Assembling the Baffles
Baffle keyhole
2
Baffle tabs
3
4
Completed assembly
To insert the baffles:
Important: Note insertion order and proper fin direction (80° towards exhaust end and 100° towards burner end (Figure 3.19).
1 Insert baffles with the keyhole end first.
2 Rotate baffle assembly so that it is in the vertical position.
3 Slide baffle assembly into the last radiant tube section, furthest from burner control box.
NOTE: It may be necessary to cut the heat baffle into two sections when the heater is configured with a ‘U’ or ‘L’ shaped accessory fitting. In this case, place as much baffle as possible downstream of the ‘U’ or ‘L’ fitting and the remainder just before the fitting.
Figure 3.19 • Inserting the Baffles
Heat baffle
Pressure baffle
Keyhole
100°
Pressure baffle
80°
Turbulator fins
IMPORTANT: Baffle assembly must be flush with the end of
the last tube section (exhaust end) and in the vertical position.
22
LD Series
3.0 Installation • Final Heater Assembly
Final Heater Assembly
Chart 3.6
Tube Installation Sequence, Baffle Location and Secured Joints for Reflectors
10 Foot
15 Foot
20 Foot
30 Foot
Key
Burner Control Box
w/16 in. Burner Tube
Aluminized Radiant Tube
Exchanger with Clamp
Expansion Joint on
Reflectors
Baffle Location
Secure vent material to exchanger with three #8
sheet metal screws. Seal with high temperature
silicone sealant. Do not use tube clamp.
Secured Joint on
Reflectors
Titanium Treated
Combustion Chamber
with Clamp
23
LD Series
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 un-vented (page 28). Venting can terminate through the
sidewall (horizontal) or the roof (vertical) and be individually or commonly vented.
Venting Requirements
• This appliance must be vented in residential installations.
• 3 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 20 ft. (6 m). • Single wall galvanized vent pipe must be insulated in cold environments.
• Seal single wall vent with high temperature sealant and three (3) #8 sheet metal screws.
• 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 3.20 & 3.21).
• Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12.
24
LD Series
3.0 Installation • General Venting Requirements • Sidewall Venting
Figure 3.20 • General Vent Requirements
Vent Cap
24 in.
Min.*
Roof*
Storm Collar
Adjustable Roof Flashing
1 in. minimum clearance
3 in. Double-wall B Vent
1 in. minimum clearance
Firestop Spacer
Heater
B to C Adapter
Single-wall Elbow or Alternate Tee Fitting
Single-wall Vent (field supplied)
*Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12
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 be a minimum of 36 in. below or extend beyond any combustible overhang.
Figure 3.21 • Sidewall Venting Requirements
Building Overhang
Sidewall
36 in.
min.
3 in. Sidewall Vent Cap
Heater
6 in.
min.
B to C Adapter
(P/N: DB-208 - sold separately)
Wall Thimble
3 in. Double-wall
B-Vent
3 in. Single Wall Vent
1/4 in. downward
pitch per foot
25
LD Series
3.0 Installation • Sidewall Venting • Rooftop Venting
Vent Termination
United States: • Vent must terminate a minimum of 4 ft. below, 4 ft. horizontally from, or 1 ft. above any window or door that may be opened or gravity air inlet into the building.
• Vent must terminate a minimum of 3 ft. above any forced air inlet that is located within
10 ft.
• The bottom of the vent terminal must be located a minimum of 12 in. above grade level and must extend beyond any combustible overhang. Vents adjacent to public walkways must terminate a minimum of 7 ft. 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. from the sidewall of the building.
• Vent must be a minimum of 36 in. below or extend beyond any combustible overhang.
• Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12.
Canada:
• Vents must terminate a minimum of 3 ft. 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. from a mechanical air supply inlet.
Rooftop Venting
Guidelines:
Vent Locations and Clearances
• Separate air intake duct from vent pipe a minimum of 4 ft. by placing vent pipes higher
than adjacent air intake duct.
• Venting may utilize standard B-vent cap.
• The vent terminal must extend a minimum of 2 ft. above the roof.
Figure 3.22 • Rooftop Venting - Side View
3 in. Vent Cap
24 in. Min.*
Roof
Roof
3 in. Double Wall B Vent Pipe
Firestop Spacer
Heater
B to C Adapter
*Consult the NFPA ANSI Z223.1 Gas
Vent Termination criteria if roof pitch
exceeds 9:12.
Single Wall Elbow or Alternate Tee Fitting
26
LD Series
3.0 Installation • Common Venting
Common Venting
• A staggered arrangement or a dual exhaust assembly (P/N: DB-Y) must be used when joining two heaters to a common vent so that by-products of one heater do not flow into the adjoining vent of the other heater.
• 4 in. diameter double-wall Type B-vent and 4 in. vent cap must be used.
• Common vented heaters must be controlled with the same thermostat. Do not operate individually.
Figure 3.23 • Common Rooftop Venting - Side View
24 in.
Min.*
4 in. Rooftop Vent Cap
Roof
4 in. Double Wall B Vent
Firestop Spacer
3 in. Single Wall
Vent Pipe
Heater
Heater
Dual Exhaust Assembly
P/N: DB-Y
*Consult the NFPA ANSI Z223.1 Gas
Vent Termination criteria if roof pitch
exceeds 9:12.
Figure 3.24 • Common Sidewall Venting - Top View
Sidewall
6 in.
min.
B To C
Adapter
4 in. Sidewall Vent Cap
Heater
Dual Exhaust Assembly
P/N: DB-Y
(P/N: SWD-4)
Wall Thimble
Double Wall B-Vent
Heater
4 in. Single Wall Vent
27
3.0 Installation • Optional Unvented Operation • Combustion Air Requirements
LD Series
Optional Unvented Operation
!
WARNING
This appliance must be vented in residential installations. Unvented tube heaters in
residential spaces may result in property damage, serious injury or death. Use unvented
operation in commercial and industrial installations with proper ventilation rates only.
When using an unvented configuration (commercial & industrial use only), consider the following:
• A factory vent cap/diffuser (P/N: WVE-3) must be used.
• Where unvented heaters are used, natural or mechanical means must be provided to supply and exhaust a minimum of 4 cfm/1000 Btu/h input of installed heaters.
NOTE: Gravity or mechanical means may be used to accomplish the air displacement. Local codes may require that the mechanical exhaust system be interlocked with the electrical supply line to the heaters, enabling both to function simultaneously.
• The minimum clearance between the air intake and the exhaust terminal is 4 ft.
NOTE: When installing in a U-tube configuration, use extra caution to separate vent gases from heater intake.
• Exhaust openings for removing the flue products must be located above the level of the heater(s).
• Use of combustion air intake.
Figure 3.25 • Minimum End Clearances
12 in. Min.
12 in. Min.
All heaters
unvented
heaters
Combustion Air Requirements
Combustion air may be supplied to the heater by indoor or outdoor means.
If using combustion air from indoors, the required volume of the space must be a minimum of 50 ft3 per
1000 Btu/hr unless the building is of unusually tight construction. If the building is of unusually tight
construction with air infiltration rates of less than 0.40 air changes per hour, outside combustion air is
typically needed unless the sheer size of the building allows otherwise. Contact the factory for further
determination of air infiltration rates.
28
LD Series
3.0 Installation • Combustion Air Requirements
Non-contaminated outside air for combustion must be ducted to the heater if any of the following apply:
• Chemicals such as chlorinated or fluorinated hydrocarbons (typical sources are refrigerants, solvents, adhesives, degreasers, paints, paint removers, lubricants, pesticides, etc.).
• High humidity.
• Contaminants such as sawdust, welding smoke, etc.
• Negative building pressure.
• Unusually tight construction where there is an air infiltration rate of less the 0.40 air changes per hour.
Combustion air intake may be located on either the sidewall or roof (see Figures 3.26 - 3.28).
Figure 3.26
Vertical Outside Air Supply for
Single Heater Intake • Side View
Roof Intake Cap
Roof
18 in.
Minimum
Flexible Air Inlet Boot
4” Pipe
Figure 3.27
Horizontal Outside Air Supply
for Single Heater Intake • Side View
Burner
Control Box
Flexible Air Inlet Boot
Air Intake Cap
(P/N: WIV-4)
4” Pipe
Burner
Control Box
Wall
Figure 3.28
Vertical Outside Air Supply
for Common Intake • Side View
NOTE: Common
intake heaters must
share the same
thermostat.
Roof Intake Cap
18 in.
Minimum
6” Pipe
Roof
Flexible Air
Inlet Boot
Flexible Air
Inlet Boot
4” Intake Pipe
4” Intake Pipe
29
Burner
Control Box
LD Series
3.0 Installation • Combustion Air Requirements • Gas Supply
Guidelines:
Chart 3.7
Limitations for Length and Size of Combustion Air Intake Duct
Single Heater Intake
Air Intake Duct Size
Max. Intake Length
Dual Heater Intake
Duct Size
Max. Intake Length
4 in.
20 ft.
4 in.(single)/6 in.(dual)
20 ft.
5 in.
30 ft.
4 in.(single)/8 in.(dual)
30 ft
6 in.
40 ft.
Consult factory for longer intake lengths.
General
• No more than two 90 degree elbows are allowed.
• Allow for expansion. Use a 4 in. flexible hose to connect the duct to the burner control box.
• In humid environments, use insulated duct, PVC pipe or DWV (drain waste vent) to prevent condensation on the outer surface.
• Do not draw air from attic space.
• A factory approved wall intake cap (P/N: WIV-4) must be used with horizontal outside intake ducts. The wall intake cap must be installed to prevent blockage. Locate the intake where dirt, steam, snow, etc. will not contaminate or clog the intake screen.
• Separate air intake duct from vent pipe a minimum of 4 ft. Also, place vent pipe higher than adjacent air intake duct.
Gas Supply
!
WARNING
Improperly connected gas lines may result in fire, explosion,
poisonous fumes, toxic gases, asphyxiation or death.
Connect gas lines in accordance to national, state, provincial
and local codes.
Important! Before connecting the gas supply to the burner control box:
• Verify that the heater’s gas type (as listed on the rating plate) matches that of your application and the installation complies with national and local codes and requirements of the local gas company.
Unless otherwise noted on the rating plate, this infrared heater is designed and orificed to operate on standard BTU gas. Contact the factory if utilizing non-standard BTU gas.
HIGH ALTITUDE: Installation of this tube heater is approved, without modifications, for elevations up to 6,000 feet (1,829 m) MSL (sea level) in the United States. Contact the factory for installations above these elevations.
• Check that the gas piping and service has the capacity to handle the total gas consumption of all heaters being installed, as well as any other gas appliances being connected to the supply line.
• Check that the main gas supply line is of proper diameter to supply the required fuel pressures.
• If utilizing used pipe, verify that its condition is clean and comparable to a new pipe. Test all gas supply lines in accordance with local codes.
30
LD Series
3.0 Installation • Gas Supply
• Test and confirm that inlet pressures are correct. Refer to the heater rating plate for gas type and the required minimum and maximum pressures (see Chart 3.8). The gas supply pipe must be of sufficient size to provide the required capacity and inlet pressure to the heater (if necessary, consult the local gas company). Do not exceed the maximum allowed pressures for the heater, the space or the gas piping system.
Chart 3.8 Manifold Pressure
Type of
Gas
Required Manifold Pressure
Minimum Inlet
Pressure
Maximum Inlet
Pressure
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.
NOTE: Check manifold pressure at the tap on the gas valve. Small variations in manifold pressure
(actual vs. published) may exist due to changing atmospheric conditions. Readings will be above
atmospheric pressure.
Pressure Equivalents: 1 Inch W.C. equals .058 oz/sq. in. equals 2.49 mbar.
To connect the gas:
!
WARNING
Failure to install, operate or service this appliance in the approved manner may result in
property damage, injury or death. Only trained, qualified gas installation and service
personnel may install or service this equipment.
The installation must conform with local building codes or, in the absence of such codes, the National Fuel
Code (NFPA 54) and in conjunction with ANSI Z21.24/CSA 6.10 “Connectors for Gas Appliances”.
Important! The heating system will expand and contract during operation. Allowances for expansion
must be made between the connection to the heater and the gas supply. Excessive bending, kinks,
twists or vibration must be avoided. A flexible gas connection of approved type is required. Flexible
stainless steel gas connectors installed in one plane, and without sharp bends, kinks or twists is
recommended.
The gas pipe and connection must be supported independently. Do not install gas supply line in a
manner that bears the weight of the heater. Connect the main gas supply line with an approved flexible
connector (Figure 3.29) or, if national or local codes require rigid piping, a swing joint. Heater shall not be
connected to the building piping system with rigid pipe or semi-rigid metallic tubing, including copper.
When using such material, an intermediate connection device that allows for heater expansion must be
used.
The gas outlet must be in the same room as the appliance and accessible. It may not be concealed within
or run through any wall, floor or partition. When installing the heater in a corrosive environment (or near
corrosive substances), use a gas connector suitable for the environment. Do not use the gas piping
system to electrically ground the heater.
1 Install a sediment trap / drip leg if condensation may occur at any point of the gas supply line. This will decrease the possibility of loose scale or dirt in the supply line entering the heater’s control system and causing a malfunction. NOTE: High pressure gas above 14 Inches W.C. (water column pressure) requires a high pressure regulator and ball valve.
31
LD Series
3.0 Installation • Gas Supply
2 Form the stainless steel flexible connector into a smooth C-shape allowing 12 in. between the flexible connector’s end nuts (see Figure 3.29).
3 Attach the ball valve to the gas supply pipe. Apply pipe compound to NPT adapter threads to seal the joint. Use only a pipe compound resistant to LP. NOTE: Provide a 1/8 in. NPT plugged tapping accessible for test gauge connection immediately upstream of gas connection to the heater (provided on ball valve).
CAUTION
!
When using a stainless steel flexible gas connector, do not attach the connector nuts directly to the
gas pipe supply. Connector nuts must be installed to an approved adapter.
4 Attach the flexible connector to the adapter and burner control box inlet. Seal the joints.
NOTE: Excessive torque on the manifold may misalign the orifice. Always use two wrenches to tighten mating pipe connections.
5 Final assembly must be tested for gas leaks according to NFPA 54 and all local codes and/or Standards.
!
WARNING
Testing for gas leaks with an open flame or other sources of ignition may lead to a fire or explosion and cause serious injury or death. Test in accordance with NFPA or local codes.
Figure 3.30 • Gas Connection (Flexible Gas
Connection shown) • End View
Figure 3.29 • Gas Connection (Flexible Gas
Connection shown) • Side View
NOTE: Do not exceed 14 Inches W.C. to the appliance.
Ball Valve / Inlet Tap
Adapter
12”
Ball Valve/
Inlet Tap
Drip Leg/
Sediment Trap
2” Max Displacement
45°
45°
Heater Movement
Horizontal
Burner
Control Box
Burner Control Box
Adapter
Remove Cap to
Clean Sediment Trap
Stainless Steel Gas Connector,
Formed Into Smooth C-Shape
32
LD Series
3.0 Installation • Electrical Requirements
Electrical Requirements
!
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.
The tube heater must be electrically grounded in accordance with the following codes:
United States: Refer to National Electrical Code®, ANSI/NFPA 70 (latest edition). Wiring must conform to the latest edition of National Electrical Code®, local ordinances, and any special diagrams furnished.
Canada: Refer to Canadian Electrical Code CSA C22.1 Part 1 (latest edition).
Thermostat
NOTICE
Connecting the thermostat with a voltage other than 24V may damage the heater. The LD Series requires
a 24V connection to the thermostat. This is either supplied by the heater internally (standard) or by an
external transformer (with optional relay board, P/N: HLRB). See below.
• 120 Volt - 60 Hz GRD, 3-wire.
• 24V thermostat connection.
• Starting current 4.8 amps
• Running current 1.1 amps
The LD Series is equipped with or without a relay board (P/N: HLRB). The optional relay board must be
factory installed.
Standard Configuration
Without relay board (identified with white crescent around the terminal block):
• Single burner control box.
• Single thermostat.
Optional Configuration
With relay board (identified with orange crescent around the terminal block):
• A single thermostat controls two or more burner control boxes.
• Heaters are common vented.
• Must be factory installed.
HIGH
24V
LOW
24V OUT
- 24V HEATER OUTPUT -
NOTE: Units with a relay board installed must have an external transformer (field supplied), see wiring diagram (Figure 3.1B).
LD Series heaters require a 24V, two stage thermostat to operate. The burner control box is equipped
with either a round terminal strip that accepts three (3) 1/4” insulated female spade terminals or a 36”
yellow 24V control wire. Do not supply 120V to the 24V connection. The 120V connection is factory wried
with a three-prong pig tail. Refer to LD Series field wiring diagram (Figure 3.1).
NOTE: Different thermostats operate according to their particular features. Refer to thermostat
specifications for details.
33
LD Series
3.0 Installation • Electrical Requirements
Wiring
!
WARNING
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 3.1 • Field Wiring Diagrams
A. Single Heater, Single Thermostat. No Relay Board (white label)
NOTE: If optional yellow
control cord is installed,
the following colors apply:
Label with a
white crescent
24V - Green
Low - White
High - Black
24V
1
2
LO HI
Ground screw
on control box
1/4” spade terminals
required (field supplied)
24V
N
Low
To 120VAC
Grounded Outlet
High
Additional wire is needed on thermostats
that require constant power.
Thermostat
B. Multiple Heaters, Single Thermostat. With a Relay Board (HLRB orange label)
NOTE: If optional yellow
control cord is installed,
the following colors apply:
Label with an
orange crescent
24V - Green
Low - White
High - Black
COM
1/4” spade terminals
required (field supplied)
1
2
LO HI
Low
High
Thermostat
Additional wire is needed
on thermostats that
require constant power.
COM
N
24V
1
2
LO HI
120V
COM
24V
LD Series
Burner Control Box
To 120V
Grounded
Outlet
External transformer
(field supplied)
1
LD Series
Burner Control Box
2
LO HI
LD Series
Burner Control Box
To 120V
Grounded
Outlet
To 120V
Grounded
Outlet
L1
N
34
LD Series
3.0 Installation • Electrical Requirements • LD Series Internal Wiring Diagrams
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 3.2 • LD Series Internal Wiring Diagrams
A. LD Micro 60U-24 Ladder Diagram
L1 120VAC
N
120V
BK
TRANSFORMER
BK
BL
24V
W
O
Y
IGNITOR
THERMOSTAT
TERMINAL
R
PRESSURE
SWITCHES
W
G
BK
BK
THERMAL
FUSE
APS2
(NC)
APS1
(NO)
BLOWER
PR
PR
PK
BK
PK
2
1
STAGE
INDICATOR
LIGHTS
BK
BK
W
GY
W
BK
G
BK
BK
G
GAS VALVE
117L
HSI
FAN
HSI
117N
117N
APS2
APS1
APS1
APS2
GND
VALVE
TH
MICRO 60U-24
IGNITION
MODULE
R
STATUS
LIGHT
G
24V
G
GND
BK
GND
G
BK
PROBE
2 STAGE THERMOSTAT
(FIELD SUPPLIED)
FLAME
ROD
BL
W
(FIELD SUPPLIED)
B. LD Series Micro 60U-24 Block Diagram
THERMOSTAT
TERMINAL
24V
R
PR
1
2
STAGE
THERMAL FUSE
2 STAGE THERMOSTAT
(FIELD SUPPLIED)
O
APS2 (NC)
APS1 (NO)
MICRO 60U-24
IGNITION MODULE
R
BK
PR
G
BL
PK
W
PRESSURE
SWITCHES
PK
G
G
Y
BK
BL
STATUS
LIGHT
G
INDICATOR
LIGHTS
GY
BK
BK
TRANSFORMER
W
W
BK
BK
IGNITOR
BK
W
L1
HI
M
C
C
BK
BK
BK
BLOWER
(FIELD SUPPLIED)
35
GAS VALVE
OFF
ON
W
BK
G
BURNER
120VAC
N
BK
FLAME
ROD
LD Series
3.0 Installation • Electrical Requirements • LD Series Alternative Wiring Diagrams
Figure 3.3 • LD Series Alternative Wiring Diagrams
A. LD Series Micro 60U-24 Ladder Diagram - With Relay Board
L1 120VAC
N
120V
BK
HL RELAY BOARD
TRANSFORMER
BL
BK
24V
O
W
Y
O
R
Y
IGNITOR
FLAME
ROD
BL
T'STAT
TERMINAL
W
G
PRESSURE SWITCHES
BK
BK
R
THERMAL
FUSE
APS2
(NC)
APS1
(NO)
PR
BLOWER
PR
PK
PK
W
GY
G
G
GAS VALVE
FAN
MICRO 60U-24
IGNITION
MODULE
117L
HSI
HSI
117N
APS1
APS2
APS1
APS2
VALVE
24V
GND
GND
G
TH
BK
GND
G
BK
BK
24V
120/24V
TRANSFORMER
(FIELD SUPPLIED)
BK
G
BK
PROBE
2 STAGE THERMOSTAT
(FIELD SUPPLIED)
BK
BK
W
INDICATOR
LIGHTS
117N
2
1
STAGE
120V
BK
R
STATUS
LIGHT
W
(FIELD SUPPLIED)
B. LD Series Micro 60U-24 Block Diagram - With Relay Board
Y
O
R
T'STAT
TERMINAL
24V
R
HL RELAY BOARD
1
2
STAGE
PR
THERMAL FUSE
O
2-STAGE T'STAT
(FIELD SUPPLIED)
BK
PR
APS2 (NC)
APS1 (NO)
MICRO 60U-24
IGNITION MODULE
BL
G
R
W
PRESSURE
SWITCHES
PK
PK
G
G
Y
BK
BL
STATUS
LIGHT
G
INDICATOR
LIGHTS
GY
BK
BK
TRANSFORMER
W
W
BK
BK
FLAME
ROD
BK
120/24V
TRANSFORMER
(FIELD SUPPLIED)
L1
BK
W
BK
M
C
C
G
IGNITOR
BK
BK
120VAC
W
GAS VALVE
BLOWER
(FIELD SUPPLIED)
36
OFF
ON
N
HI
BK
LD Series
4.0 Operation • Operating Instructions
4.0 Operation
!
WARNING
This appliance does not have a pilot ignition. It is equipped with an ignition device
which automatically lights the burner. Do not attempt to light the system by hand.
Before operating, smell all around the appliance area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will settle to the floor. Refer to page 1 “If you smell gas” and on
safety label affixed to the heater.
Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the control system and any gas control
which has been under water.
Operating Instructions
!
WARNING
Use only your hand to turn the manual shutoff. Never use tools. If the
knob will not turn by hand, don’t try to repair it; call a qualified technician. Force or attempted repair may result in a fire or explosion.
Lighting Procedures:
1 Stop! Read the safety information above.
2 Set the thermostat to the lowest setting.
3 Turn OFF all electrical power to the appliance.
4 Turn manual shutoff clockwise to “OFF”.
5 Wait five (5) minutes to clear out any gas. If you smell gas STOP!
6
7
8
9
Follow the safety information found on page 1 “If you smell gas” and on safety label affixed to the heater. If you do not smell gas, proceed to step 6.
Turn manual shutoff knob counterclockwise to “ON”.
Turn ON all electrical power to the appliance.
Set thermostat to desired setting.
If the appliance will not operate, follow instructions below to turn OFF gas to the appliance and call your service technician or gas supplier.
Shutdown Procedures:
1 Set the thermostat to the lowest setting.
2 Turn OFF all electrical power to the appliance if service is to be performed.
3 Turn manual shutoff knob clockwise to “OFF”. Do not force.
37
LD Series
4.0 Operation • Sequence of Operation • Thermostat
!
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.
Sequence of Operation
Standby: The MICRO 60U-24 CONTROL continually checks for internal faults, circuit integrity and relay
contact positioning.
Starting Circuit: Upon a call for heat, the control verifies that the burner and exhaust pressure switches
are in their proper positions. The control energizes the fan. Once operational static pressure is
achieved, the burner pressure switch will close initiating the ignition sequence. The hot surface
igniter is powered and the gas valve opens after 45 seconds. If the flame is not sensed, the heater
will attempt to re-ignite for a total of 3 trials for ignition before proceeding to soft lockout.
Low Fire Running Circuit: After ignition, the flame rod monitors burner flame. If sense of flame is lost,
the control closes the gas valve within one second and a new trial sequence (identical to the starting
sequence) is initiated. If flame sense is not established within 8.5 seconds, the heater will attempt
two additional ignition sequences before proceeding to soft lockout. The control can be reset by
briefly interrupting the power source.
High Fire Running Circuit: The second stage on the gas valve is powered directly from the second
stage of the thermostat. In order for high fire to engage, low fire must be energized as well. The
thermostat determines which stage to maintain for the desired comfort level.
Shut Down: When the thermostat is satisfied, the fan will enter a two (2) minute post-purge cycle.
38
LD Series
4.0 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 30
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 4.1 below for a description of LED codes.
Externally located operational indicator lights are provided to assist in troubleshooting of the heater. Refer
to pages 40-43 for additional troubleshooting.
Figure 4.1 • Operational Indicator Lights
Light 3 (red)
Light 1(amber)
Light 2 (amber)
Indicates Diagnostic
Fault Code Status
(see Chart 4.1)
Indicates High
Fire Mode
Indicates Low
Fire Mode
Operational Indicator Lights
Chart 4.1 • LED Fault Code Status
LED CODE
Initial Flash on power up, then
steady off
FAULT STATUS
FAULT CODE DELAY*
Normal operation
Immediate
Steady on
Module failure/Internal fault
Immediate
1 flash
Ignition failure
32 minutes
2 flashes
APS 1 failure
12 minutes
3 flashes
APS 2 failure
22 minutes
4 flashes
Solenoid valve fault/Leaky valve/
Flame amplifier fault
Immediate
No flash on 117V start-up
Transformer fault
Immediate
*Some LED codes have a time delay before the LED will flash.
39
LD Series
5.0 Maintenance • Troubleshooting Guide
5.0 Maintenance
Turn up thermostat
Does the fan
blower turn on?
No
Is the power at the
heater 120V?
Does the heater have a relay board?
(identified by an orange crescent
next to the terminal plug).
Yes
No
Yes
Find the source of the electrical problem between panel and heater.
Troubleshooting with Relay Board
Find the source of the
electrical problem
between panel and
external transformer.
No
Is there 120V on the
primary side of the
external transformer?
No
Is the power across
the left and middle
terminals of the
terminal strip 24V?
No
Yes
24 Volts
Yes
External transformer
is faulty and must be
replaced.
No
Is there 24V on the
secondary side of the
external transformer?
Yes
Is there
24V to the
thermostat?
Yes The thermostat or wiring
is faulty and should be
replaced or repaired.
No
Find source of electrical problem between
the external transformer and thermostat.
No
Yes
Repair the wiring
between the
transformer and
the 24V plug.
Yes
Is there 24V on
the secondary
side of the
transformer?
Is there 120V on
the primary side
of the internal
transformer?
Yes
No
No
Is the igniter
physically
damaged?
Replace igniter.
Yes
Repair the wiring between power in and transformer.
No
Check voltage at igniter
sequence (usually 5 to 15
seconds after power to
heater). Is it 120V?
Yes
Yes
No
No
Replace transformer.
Does the igniter
warm up and
glow red?
Is the power across the
left terminal of the 24V
plug and ground
(screw on the burner
control box) 24 Volts?
No
Is the inlet or the outlet
of the unit plugged or
obstructed?
Yes
Yes
No
Is the resistance through
the igniter 50-400 Ω?
Continued on page 42
Yes
Remove obstruction.
Continued on page 42
40
No
LD Series
5.0 Maintenance • Troubleshooting Guide
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.
Key
With Relay Board:
Without Relay Board:
Process
Question
Start
Question
Is the power across
the 24V wire on the
circuit board and
ground 24V?
Yes
Is the power across
the TH wire on the
circuit board and
ground 24V?
Is the circuit
board sending
120V to the
fan?
Yes
The relay board is faulty
and must be replaced.
Is the pressure
switch stuck in the
closed position?
No
Remove
Is the fan
obstructed?
Yes obstruction.
No
No
Yes
Corrective
Action
Yes
No
No
Is there 120V on the
primary side of the
internal transformer?
Process
Question
Corrective
Action
Yes
Replace
switch.
No
The internal
transformer is
faulty
and must be
replaced.
The circuit board is
faulty and must be
replaced.
Repair wiring between
power in and transformer.
The fan is faulty and must be replaced.
No
No
Is the power across
the middle (low)
terminal of 24V plug
and ground (screw on
the Burner Control Box)
24 Volts?
Yes
Is there 24V
across the TH and
ground terminals
on the circuit
board?
No
Yes
Is the pressure switch stuck
in the closed position?
Is the circuit
board sending
120V to the
fan?
Yes
Replace
pressure
switch.
No
Yes
Is the fan
obstructed?
Yes
Remove
obstruction.
No
Repair thermostat or wiring from
thermostat to heater.
Correct wiring.
Check for loose wiring or restrictions in hose
connections to pressure switch.
Are they OK?
*After 10-12 minutes of nonoperation has passed, is
there a flash code for APS
failure (2 or 3 flashes)?
Yes
No
Yes
No
Replace wiring or hose connections.
Replace circuit board.
Continued on page 43
* Refer to LED diagnostic Fault Code Chart.
41
LD Series
5.0 Maintenance • Troubleshooting Guide
Continued from page 40
After igniter is
warmed up, does
gas valve open?
Continued from page 40
Test for 24V at valve opening period (usually 45 to 60 seconds
after power to heater). Is there 24V to valve for 8 seconds?
No
No
Yes
Does the burner
light?
Replace circuit board and/or wiring harness.
Is the ball valve/
shut-off valve
in the ON position?
No
Yes
Does the burner
stay on?
Yes
Check to make sure gas pressure is within
minimum and maximum inputs, as indicated on
heater’s rating plate. Is the gas pressure OK?
Yes
No
No
Turn on.
Correct problem.
Does the burner stay on
for approx. 8 seconds
and then shut off?
No
Yes
Yes
No
Yes
Does the burner come
on and turn off
immediately
(1 or 2 seconds)?
Yes
Check to make sure gas pressure
is within minimum and maximum
inputs, as indicated on heater’s rating plate. Is gas pressure OK?
Yes
No
Does the heater
stay ON until a call
for heat ends?
No
Yes
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.
Correct problem.
Pressure
switch may
be faulty or
there is a
restriction in
the exhaust.
Troubleshooting ends.
Check to make sure flame
sensor wire is OK and then
replace the circuit board.
Yes
With microampmeter, check DC
amperage at flame rod. Is
it greater than .07 microamps?
No
Sensing rod is faulty or flame is weak.
Check to make sure heater is operating
at proper gas pressure as indicated on
heater’s rating plate and then,
if needed, replace sensing rod.
42
Yes
Is the heater properly
grounded? Is the heater’s
polarity correct?
No
Correct problem.
LD Series
5.0 Maintenance • Troubleshooting Guide
Continued from page 41
Check to make sure gas pressure is
within minimum and maximum inputs, as
indicated on the heater’s rating plate.
Is the gas pressure OK?
No
The heater is equipped with two safety pressure switches.
The burner switch, located in the fan compartment, is a
normally open switch and the exhaust switch, located
in the valve compartment, is a normally closed switch.
Temporarily place jumpers across the terminals of the
exhaust switch (reinstall control box cover).
Does the igniter glow red?
Yes
Replace gas valve.
Correct problem.
Were the gas lines purged of air?
NOTE: If normal operation does not continue after
bypassing the exhaust switch, consult factory to
troubleshoot the burner switch prior to continuing.
Yes
No
No
Purge gas line.
Temporarily place jumpers
across the thermal fuse (reinstall the control box cover).
Does the igniter glow red?
Yes
Replace the appropriate pressure switch after verifying:
No
Yes
Replace burnt
out light.
Replace thermal fuse.
• There is continuity across the thermal fuse.
• Baffle(s) are assembled correctly and placed
in the radiant tube furthest from the burner.
• Heater, fan blowers ,squirrel cage, intake
and exhaust are clean and free from dirt and
obstructions.
• The 4” air intake pipe does not exceed 20 ft.
and/or 2 elbows.
• There is not a negative pressure experienced
at the area of air intake (e.g.; high winds, attic
space, tightly sealed building).
If heater does not go into high fire mode:
NOTE: To confirm that the heater is not in high fire mode, check manifold pressure.
If manifold pressure is 3.3” to 3.5” for natural gas or 9” to 10” for propane, the light is faulty and should
be replaced.
When the heater is in low fire mode, manifold pressure is approximately 2.0” to 2.5” for natural gas or 5.0” to 6.5” for propane. If this is the case, the following troubleshooting steps should be followed:
On the outside of the control box, is there 24V
across the GROUND and HIGH (HIGH to COM on
heaters with relay) on the terminal strip?
Yes
No
Repair or replace faulty
wiring or thermostat.
Measure voltage across the red wire
on the VALVE and GROUND (red wire
on RELAY BOARD to GROUND on
heaters with a relay). Is it 24V?
Yes
Replace gas valve.
43
No
Replace relay board.
LD Series
5.0 Maintenance • Heater Components and Parts List
1
Figure 5.1 • Burner Assembly Components
70
57A
56C
825
55A
832
830
851
17
1060F
218
852 301
828
1013
264F
14
15
16
826
31B
333
827
5
114
33B
334*
83
212
84
205
222
222A
217 221
50
11
202
206 214
304
13
68B
383
321
1033
802, 802A
220
1021
76
9 10
1070
31B 13 204
223
840A, 841A
12
303
208A
Chart 5.1 • Parts List
Part No. Description
Part No.
Description
TP-1
Control Box Cover
TP-56C
1/4 in. Atmospheric Vinyl Tube
TP-5
Flange Gasket
TP-57A
1/4 in. Pressure Tube
TP-9
Conduit Coupling
TP-68B
Strain Relief Bushing
TP-10
Conduit 4 in. x 1/2 in.
TP-70
Control Box Cover Gasket (per foot*)
TP-11
Hot Surface Igniter Box
TP-76
Rubber Grommet
TP-12
Hot Surface Igniter Box Cover
TP-83
24 in. Stainless Steel Flexible Gas Connector
TP-13
8 x 1/2 in. Self-Drilling Screw
TP-105
Aluminum Reflector End Cap
TP-14
Sight Glass Gasket
TP-106
Reflector End Cap Clips (8 pcs.)
TP-15
Sight Glass
TP-112
60 in. Aluminum Reflector
TP-16
Sight Glass Washer
TP-114
Plastic Air Orifice with Screen
TP-17
Sight Glass Kit
TP-202
4”x16” HSI Burner Tube (fittings included)
TP-19B
4” Wire Hanger with Tension Spring
TP-204
Gas Orifice (consult factory)
TP-20C
120 in. Aluminum Reflector
TP-205
Hot Surface Igniter Holder
TP-20D* 120 in. Stainless Steel Reflector
TP-206
Glo-Bar Holder Spring Clip
TP-31B
Control Box Mounting Bracket
TP-208A
Gas Valve Mounting Bracket
TP-33B
1/2 in. Shut-Off Ball Valve/Inlet Tap
TP-212
1/2” x 3” Pipe Nipple
TP-50
Hot Surface Igniter
TP-214
Hot Surface Igniter Wiring Harness
TP-55A Fan Blower
TP-217
Pressure Switch Barb
* Optional ** 6 feet total required to cover outer edges of the burner control box.
44
LD Series
5.0 Maintenance • Heater Components and Parts List
Figure 5.2 • Tube & Reflector Components
1078
1079
20C, 112, 20D*
e (s
ub
T
r
itte
m
E
nt
dia
a
R
105
106
)
1082, 1076
19B
1077
r
be
am
h
nC
tio
s
u
mb
Co
1088
Part No. Description
1083
1086
Part No.
Description
TP-218
Differential Switch Vinyl Sensing Tube (exhaust) TP-830
Divider Grommet
TP-220
4” Stainless Steel Tube Clamp
TP-832
Thermostat Terminal Strip
TP-221
Hot Surface Igniter Holder Gasket
TP-840A
36G54-224 Gas Valve - Natural Gas Assembly
TP-222
Flame Rod
TP-841A
36G54-226 Gas Valve - LP Gas Assembly
TP-222A Flame Rod Wire
TP-851
Micro-60-24 Diagnostic Circuit Board
TP-223
TP-852
3-Piece Wire Harness Set for Micro 60 Board
TP-264F Normally Open Burner Pressure Switch
TP-1013
Ignition Cover Plate
TP-301
Burner Control Box Center Panel
TP-1021
Ignition Cover Plate Gasket
TP-303
End Panel, Right
TP-1033
Thermal Cutoff Fuse
TP-304
Burner Control Box Outer Shell
TP-1060F Normally Closed Exhaust Pressure Switch
TP-321
Ignition Plate Gasket
TP-1070
V2 Burner (White) - consult factory
TP-333
Black 60 in. 120V 3-Prong Power Cord
TP-1076
3 in. O.D. 5 ft. Coated Aluminized Tube
TP-334*
Yellow 24V Control Wire (when applicable)
TP-1077
3 in. Tube Clamp
TP-383
Hot Surface Igniter Plate
TP-1078
3 in. Reflector Center Support (RCS)
TP-802
End Panel, Left (models with relay board)
TP-1079
3 in. Wire Hanger with Tension Spring
TP-802A End Panel, Left (models without relay board)
TP-1081
10 ft. Titanium Coated Combustion Tube
TP-825*
Optional HLRB Relay Board
TP-1082
10 ft. Coated Aluminized Tube
TP-826
40VA Transformer
TP-1083
36 in. Pressure Baffle (2 required)
TP-827
Red LED Display Diagnostic Light
TP-1086
36 in. Heat Baffle Section
TP-828
Yellow Operational Indicator Lights
TP-1088
4” to 3” O.D. 10 Ft. Combustion Chamber
Gas Manifold
45
LD Series
5.0 Maintenance • Maintenance Checks & Log
!
WARNING
Personal injury or death may result if maintenance is not performed by properly trained
gas installer or service personnel. Contact the installing distributor or place of purchase
for service. Do not operate heating system if repairs are necessary.
Allow heater to cool prior to servicing.
Disconnect power to heater before servicing.
Use protective glasses when maintaining the heater.
Routine Inspection:
At least once per year, the heating system should be inspected and serviced by trained gas installation
and service personnel only. This inspection should be performed at the beginning of the heating
season to insure that all heater components are in proper working order and that the heating system
operates at peak performance. Particular attention should be paid to the following items.
•
Blower Motor: Annual oiling of the blower motor with SAE 20 oil will extend bearing life significantly. Ensure that the squirrel cage in the blower is kept clean. If dirt becomes a problem, installation of
outside air intake ducts for combustion is recommended.
•
Vent pipe system: Check the outside termination and the connections at the heater. Inspect the vent
exhausts for leakage, damage, fatigue, corrosion and obstructions. If dirt becomes a problem,
installation of outside air intake ducts for combustion is recommended.
•
Combustion air intake system (when applicable): Check for blockage and/or leakage. Check the
outside termination and the connection at the heater.
•
Heat exchangers: Check the integrity of the heat exchangers. Replace if there are signs of structural
failure. Check for corrosion and/or buildup within the tube exchanger passageways.
•
Burner: Check for proper ignition, burner flame and flame sense. Flame should extend directly
outward from burner without floating or lifting.
•
Wiring: Check electrical connections for tightness and/or corrosion. Check wires for damage.
•
Gas Connection: Inspect the integrity of the gas connection to the heater. Check for leaks, damage,
fatigue or corrosion. Do not operate if repairs are necessary and turn off gas supply to the heater.
Contact service personnel.
•
eflectors: To maintain effective infrared heating, always keep both sides of the reflector clean.
R
Maintenance can vary significantly depending on the environment. Dirt and dust can be vacuumed or
wiped with a soap and water solution. Use metal polish if the reflectors are severely dirty.
Contact service personnel if repairs are necessary. Do not operate unit.
46
LD Series
5.0 Maintenance • Limited Warranty
Limited Warranty Terms and Conditions
One-Year Limited Warranty. Radiant Tube Heaters covered in this manual, are warranted by Detroit Radiant
Products Company to the original user against defects in workmanship or materials under normal use for one year
after date of purchase. Any part which is determined to be defective in material or workmanship and returned to an
authorized service location, as Detroit Radiant Products Company designates, shipping costs prepaid, will be, as
the exclusive remedy, repaired or replaced at Detroit Radiant Products Company’s option. For limited warranty claim
procedures, see PROMPT DISPOSITION below. This limited warranty gives purchasers specific legal rights which
vary from jurisdiction to jurisdiction.
Additional Limited Warranty. In addition to the above mentioned one-year warranty, Detroit Radiant Products
Company warrants the original purchaser an additional extension on the combustion chamber, radiant tubes and
stainless steel burner. This extension excludes electrical/purchased components.
General Conditions. The Company will not be responsible for labor charges for the analysis of a defective
condition of the heater or for the installation of replacement parts. The warranties provided herein will not apply if the
input of the heater exceeds the rated input at time of manufacturing or if the heater in the judgment of the Company
has been subjected to misuse, excessive dust, improper conversion, negligence, accident, corrosive atmospheres,
excessive thermal shock, excessive vibration, physical damage to the heater, alterations by unauthorized service
personnel, operation contrary to the Company’s instructions or if the serial number has been altered, defaced, or
removed. The Company shall not be liable for any default or delay in the performance of these warranties caused
by contingency beyond its control, including war, government restriction or restraints, strikes, fire, flood, short or
reduced supply of raw materials, or parts.
Limitation of Liability. To the extent allowable under applicable law, Detroit Radiant Products Company’s liability
for consequential and incidental damages is expressly disclaimed. Detroit Radiant Products Company’s liability in
all events is limited to and shall not exceed the purchase price paid.
Warranty Disclaimer. Detroit Radiant Products Company has made a diligent effort to provide product information
and illustrate the products in this literature accurately; however, such information and illustrations are for the sole
purpose of identification, and do not express or imply a warranty that the products are merchantable, or fit for a
particular purpose, or that the products will necessarily conform to the illustrations or descriptions. Except as
provided below, no warranty or affirmation of fact, expressed or implied, other than as stated in the “LIMITED
WARRANTY” above is made or authorized by Detroit Radiant Products Company.
Product Suitability. Many jurisdictions have codes and regulations governing sales, construction, installation, and/
or use of products for certain purposes, which may vary from those in neighboring areas. While Detroit Radiant
Products Company attempts to assure that its products comply with as many codes, it cannot guarantee
compliance, and cannot be responsible for how the product is installed or used. Before purchase and use of a
product, review the product applications, and all applicable national and local codes and regulations, and be sure
that the product, installation, and use will comply with them. Certain aspects of disclaimers are not applicable to
consumer products:
e.g., (a) some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you: (b) also, some jurisdictions do not allow a limitation on how long
an implied warranty lasts, consequently the above limitation may not apply to you: and (c) by law, during the period
of this limited warranty, any implied warranties of implied merchantability or fitness for a particular purpose
applicable to consumer products purchased by consumers, may not be excluded or otherwise disclaimed.
Prompt Disposition. Detroit Radiant Products Company will make a good faith effort for prompt correction or other
adjustment with respect to any product which proves to be defective within limited warranty. For any product
believed to be defective within limited warranty, first write or call dealer from whom the product was purchased.
Dealer will give additional directions. If unable to resolve satisfactorily, write to Detroit Radiant Products Company at
address below, giving dealer’s name, address, date and number of dealer’s invoice, and describe the nature of the
defect. Title and risk of loss pass to buyer on delivery to common carrier. If product was damaged in transit to you,
file claim with carrier.
Registration. Register on-line at www.detroitradiant.com/warranty.
47
LD Series
5.0 Maintenance • Kit Contents Check List
Kit Contents Check List
Chart 5.2 • Kit Contents for LD Series - Reference the length column for your model.
LD Series Kit Contents
TP-19B 4” Hanger with
Reflector Tension Spring
TP-1079 3” Hanger with
Reflector Tension Spring
TP-1078 3” Reflector
Center Support (RCS)
TP-83 24” Stainless Steel
Flexible Gas Connector
TP-220 4” Stainless Steel
Tube Clamp
LD Series Installation,
Operation and
Maintenance Manual
F/N: LIOLD
**TP-83A
TP-1077 3” Tube Clamp
TP-105 Reflector End Cap
TP-106 Reflector
End Cap Clips
TP-33B 1/2” Shut-Off Valve
(Ball Valve & Inlet Tap)
!
TP-1083 3” x 33” Stainless Steel Tabbed Pressure Baffles
Part No.
Description
TP-19B
TP-1086 3” x 33” Stainless Steel Heat Baffle
10 ft.
15 ft.
20 ft.
30 ft.
4” Hanger w/ Tension Spring
1
1
1
1
TP-33B
1/2” Shut-Off Valve & Inlet Tap
1
1
1
1
TP-83
24” S.S. Flexible Gas Connector
1
1
1
1
TP-105
Reflector End Cap
2
2
2
2
TP-106
Reflector End Cap Clips
8
8
8
8
TP-220
4” Tube Clamp
1
1
1
1
TP-1077
3” Tube Clamp
0
1
1
2
TP-1078
3” Reflector Center Support
1
1
2
3
TP-1079
3” Hanger w/ Tension Spring
1
2
2
3
TP-1083
3” x 33” Stainless Steel Tabbed Pressure Baffles
2
2
2
2
TP-1086
3” x 33” Stainless Steel Heat Baffle
1
1
1
1
LIOLD
LD Series Installation Manual
1
1
1
1
Filled By:
Approvals
Limited Warranty
•
•
•
•
•
•
•
•
•
ANSI Z83.20b and CSA 2.34.
Indoor approval.
Certain models are residentially Certified to CSA No. 7-89.
Outdoor approval with OD-Kit.
Commercial approval.
Printed in U. S. A.
1 year - Burner box components.
3 years - Combustion and radiant tubes.
5 years - Stainless steel burner.
See page 47 for terms and conditions.
© 2013 Detroit Radiant Products Co.
21400 Hoover Road • Warren, MI 48089
Phone: (586) 756-0950 Fax: (586) 756-2626
www.detroitradiant.com • sales@drp-co.com