Tube Heater General Manual

Tube Heater

General Manual

WARNING

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 re department.

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,

re, 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.

Detroit Radiant Products Co.

To be used in conjunction with Series 3 insert manuals.

Form: LIOGT3-Rev. 10211

Print:5M-12/17_r4-08/18 (CDS)

Replaces:LIOGT3-7M-03/17 (CDS)

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)

Contents

1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Overview............................................................................3

Heater Components ................................................................3

2.0 Safety .....................................................................................4

Warning Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Applications ........................................................................4

Clearances to Combustibles........................................................5

Safety Signs and Labels ............................................................5

Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Gas Supply..........................................................................6

Heater Expansion ...................................................................6

Standards, Certications, and Government Regulations............................7

3.0 Inst allation................................................................................9

Design Considerations and Prechecks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Hanger Placement and Suspension ................................................12

Combustion / Radiant Tube Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Optional Elbow or U-Bend Accessory Conguration................................17

Burner Control Box Suspension.....................................................19

Reector Assembly .................................................................20

Bae Assembly and Placement ....................................................22

Final Heater Assembly ..............................................................23

Venting .............................................................................24

Sidewall (Horizontal) Venting........................................................25

Roof (Vertical) Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Optional Unvented Operation.......................................................28

Combustion Air Requirements......................................................28

Gas Supply..........................................................................30

4. 0 Operation .................................................................................33

5.0 Maintenance ..............................................................................34

Troubleshooting Guide..............................................................35

6.0 Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

1.0 Introduction

Overview

The intent of this manual is to provide information regarding general safety, installation, operation, and

maintenance of the tube heater. For complete assembly and installation instructions, use this Tube

Heater General Manual in conjunction with the Series Insert Manual that accompanies this piece. You

must read and understand the instructions and safety warnings in both manuals 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. Refer to the Series Insert for a list of the kit contents for your Series heater. Materials not

included in the heater kit contents (e.g., screws, vent material, terminals, etc.) are the responsibility of

the installer. Notify your product representative or Detroit Radiant Products of any discrepancy or

missing kit contents prior to installing unit.

Tube Hanger

Reector

Reector Center Support

10 ft. Primary/

Secondary

Combustion

Chamber(s)

Bae

Reector End Cap with Clips*

Tube Clamp

Burner Control Box

SS Flex Connector*

Radiant

Tube(s)

Figure 1.1 • Heater Components*

1.0 Introduction • Overview • Heater Components

Igniter/

Sensor Box

Chains are not provided in kit.

Optional accessory. P/N: THCS

16 in. Burner Tube

* Not all items illustrated may be provided with your heater.

Refer to kit contents of the Series Insert Manual.

Tube Hanger

2.0 Safety

Warning indicates a potentially hazardous

situation which, if not avoided, could result in

death or injury.

Caution indicates a potentially hazardous

situation which, if not avoided, could result in

minor or moderate injury.

Notice indicates a potentially hazardous situation

which, if not avoided, could result in property

damage.

NOTICE

WARNING

CAUTION

WARNING

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.

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, qualied gas installation and service personnel may

install or service this equipment.

2.0 Safety • Warning Symbols • Applications

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 re marshal, insurance carrier, and other authorities for approval if the

proposed installation is in question.

Commercial / Industrial

Unless otherwise indicated, tube heaters are designed and certied 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.

Not For Residential Use. Installation of a commercial tube heater system in residential indoor

spaces may result in property damage, serious injury, or death.

Clearances to Combustibles

WARNING

Placement of explosive objects, ammable objects, liquids, and vapors

close to the heater may result in explosion, re, property damage,

serious injury, or death. Do not store or use explosive objects, liquids,

and vapor in the vicinity the heater.

2.0 Safety • Clearances to Combustibles • Safety Signs and Labels

When installing the tube heating system, the minimum clearances to combustibles for your series

tube heater and system conguration must be maintained. These distances are shown in your Series

Insert Manual and on the burner control box. If you are unsure of the potential hazards, consult your

local re marshal, re insurance carrier, or other qualied authorities on the installation of gas red

tube heaters for approval of the proposed installation.

A critical safety factor to consider before installation is the clearances to combustibles. Clearances

to combustibles is dened as

the minimum distance you must have between the tube surface, or

reector, and the combustible item

. Considerations must also be made for moving objects around the

tube heater. The following is a partial list of items to maintain clearances from:

• Vehicle parking areas

• Vehicles with lifts or cranes

• Storage areas with stacked materials

• Lights

• Sprinkler heads

• Overhead doors and tracks

• Dirty, contaminated environment

• 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

Hazards:

For maximum safety the building must be evaluated for hazards before installing the heating system.

Examples include, but are not limited to:

Safety Signs and Labels

It is important to provide warnings to alert individuals to potential hazards and safety actions. ANSI

Z83.20 and CSA 2.34 require you to post a sign “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).

Safety warning labels must be maintained on the tube heater. Illustrations of the safety labels and their

locations are pictured in the Series Insert Manual. 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 combustibles. Signs must either be posted adjacent to the

heater thermostats or, in the absence of such thermostats, in a conspicuous location.

• Plastic

• Parked vehicles

• Gasoline

• Storage racks

Combustible items: Moving Objects:

• Wood • Overhead doors

• Paper • Vehicle lifts

• Fabric • Cranes

• Chemicals • Hoists

• Paint

Venting

WARNING

The tube heater expands and contracts during operation. Follow the installation instructions to ensure

allowances are made for this movement. To ensure your safety, and comply with the terms of the

warranty, all units must be installed in accordance with these instructions.

Insucient ventilation may result in health problems, carbon monoxide poisoning, and

death. Vent enclosed spaces and buildings according to national, state, provincial, and

local codes.

This tube heater must be vented in accordance with national, state, provincial and local codes along

with the guidelines in the Detroit Radiant Tube Heater General (refer to pages 24 - 28) and applicable

Series Insert Manual. In the United States refer to the latest edition of the ANSI Z223.1 (NFPA 54)

Standard and in Canada refer to the latest edition of the CAN/CGA B149.1 Standard.

Gas Supply

Improperly connected gas lines may result in serious injury and death,

explosion, poisonous fumes, toxic gases, or asphyxiation. Connect gas

lines in accordance to national, state, provincial, and local codes.

The gas supply to the tube heater must be connected and tested in accordance with national, state,

provincial, and local codes along with the guidelines in the Tube Heater General Manual (refer to pages

31-32) and Series Insert Manual. In the United States refer to the latest edition of the ANSI Z223.1

(NFPA 54) Standard and in Canada refer to the latest edition of the CAN/CGA B149.1 Standard.

2.0 Safety • Venting • Gas Supply • Heater Expansion

Allowances must be made for the system to expand. Improper installation, adjustment,

alteration, service, or maintenance can cause property damage, injury, or death.

A exible gas connection of approved type is required. Connectors must be installed in

one plane and without sharp bends, kinks, or twists.

Heater Expansion

Building

Type

Installation of this tube heater in public garages must conform to the following codes:

United States: Standard for Parking Structures NFPA 88A (latest edition) or the

Code for Motor Fuel Dispensing Facilities and Repair Garages

NFPA 30A (latest edition).

Canada: Refer to CAN/CGA B149.1: Installation Codes for Gas Burning Appliances

and applicable Standards for Public Garages.

Guidelines:

• Heaters must not be installed less than 8 ft. (2.4 m) above the oor. 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.

Installation of this tube heater in aircraft hangars must be in accordance with the

following codes:

United States: Refer to Standard for Aircraft Hangars, ANSI/NFPA 409

(latest edition).

In Canada: Refer to Standard CAN/CGA B149.1 and applicable Standards for

Aircraft Hangars.

Guidelines:

• In aircraft storage and servicing areas, heaters shall be installed at least 10 ft. (3 m)

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 oor, to the bottom of

the heater.

• In areas adjoining the aircraft storage area (e.g., shops, oces) the bottom of

heaters shall be installed no less than 8 ft. (2.4 m) above the oor.

• Suspended or elevated heaters shall be located in spaces where they shall not be

subject to damage by aircraft, cranes, movable scaolding or other objects.

Provisions shall be made to assure accessibility to suspended tube heaters for

recurrent maintenance purposes.

Standards, Certications, and Government Regulations

Installation of this tube heater must comply with all applicable local, state and national specications,

regulations, and building codes. Contact the local building inspector and/or re marshal for guidance.

In the absence of local codes, the installation must conform to the latest edition of:

United States: National Fuel Gas Code, ANSI Z223.1 (NFPA 54).

Canada: CAN/CGA B149.1 and .2, Canadian Electrical Code C22.1

Public

Garages /

Maint.

Facilities

Aircraft

Hangars

2.0 Safety • Standards, Certications, and Government Regulations

Chart 2.1 • Standards and Code Installation Guidelines • Building Type

Codes and Guidelines

Applicable authorities governing the manufacturing or installation of this infrared heater include

(but are not limited to) the following organizations:

NOTE: Refer to the Series Insert Manual for model specic certications and approvals.

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).

Venting must be installed in accordance with the requirements within this manual and

the following codes:

United States: Refer to NFPA 54/ANSI Z223.1 (latest edition), National Fuel

Gas Code.

Canada: Refer to CAN/CGA B149.1 Installation Codes for Gas Burning

Appliances.

High

Altitude

Electrical

Venting

2.0 Safety • Standards, Certications and Government Regulations

Building

Location

Guidelines

Chart 2.2 • Standards and Code Installation Guidelines • Building Location

Installation of this tube heater is approved, without modications, 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.

The type of gas appearing on the nameplate must be the type of gas used. Installation

must comply with national and local codes and requirements of the local gas

company.

Guidelines:

Building

Aspect

Codes and Guidelines

Chart 2.3 • Standards and Code Installation Guidelines • Building Aspect

Non-

Standard

BTU Gas

Unless otherwise noted on the rating plate, this infrared heater is designed and

oriced to operate on standard BTU gas. Contact the factory if utilizing non-standard

BTU gas.

Guidelines:

• IAS - International Approval Services.

• AGA - American Gas Association.

• CE - Certication of Europe.

• IRSC- Infrared Heater Safety Council.

• NFPA - National Fire Protection Association.

• ANSI Z83.20 - American National Standards Institute.

• NFPA 54/ANSI Z223.1 - National Fuel Gas Code.

• CSA - Canadian Standards Association.

• OSHA - Occupational Safety & Health Administration.

3.0 Installation

WARNING

3.0 Installation • Design Considerations and Prechecks

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, qualied gas installation and service personnel may install or service this

equipment.

Design Considerations and Prechecks

Placement of infrared heaters is inuenced 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.

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 combustibles situations been observed?

• Is the supply (burner) end of the heater located where more heat is required?

• Is it best to oset the heaters and/or rotate the reectors towards the heat zone?

• Are extra guards, side shields, ‘U’ or ‘L’ reector covers required?

• Does the heater require outside fresh air for combustion?

• Is the environment harsh or contaminated (requiring outside air for combustion)?

• Are wind barriers required? The eective infrared surface temperature of a person or object

may be diminished with wind/drafts above 5 mph.

• 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 to avoid

an inadvertent discharge. This distance may exceed the published clearance to combustibles. Certain

applications may require the use of high temperature sprinkler heads or the relocation of the heaters.

Fire sprinkler systems containing propylene glycol, antifreeze, or other potentially ammable

substances shall not to be used in conjunction with this heater without careful consideration for

and avoidance of inadvertent discharge hazards. For further information consult NFPA 13. Always

observe applicable state and local codes.

CAUTION

3.0 Installation • Design Considerations

Design Scenario:

A tube heater system is being installed in a 90’ (L) x 50’ (W) x 14’ (H) space. Two overhead doors are

located at one end and an equipment storage area on one side. The calculated heat load is 400,000

BTU/h.

Figure 3.1 • Poor Design

Figure 3.2 • Good Design

Doors and

tracks

Too Cold

Too Hot

Equipment storage

50’

80’ - 200,000 BTU

(2 total)

Doors and

tracks

90’

Doors and

tracks

Doors and

tracks

Equipment storage

Better Heat Distribution

Sidewall Vent (2 total)

• Two burners (200,000 BTU each) are placed at one end, opposite the area of highest demand (e.g.,

overhead doors).

• Recommended mounting heights are not observed (see Chart 3.1).

• Produces an uneven heat distribution.

• Four burners (100,000 BTU each) are placed in each corner. Burner (hotter) ends direct heat to areas

of highest heat demand.

• Recommended mounting heights have been observed.

• Distributes heat more evenly.

Gas Supply

50’

90’

Gas Supply

40’ - 100,000 BTU

(4 total)

Poor Design

Good Design

When heated, materials high in hydrocarbons (solvents, paint thinner, mineral spirits, formaldehydes,

etc.) can evaporate. This may result in odors or fumes being emitted into the environment. To correct

this problem, clean the area and/or introduce additional ventilation. The heaters themselves, when

installed and serviced in accordance with the installation manual, do not emit foul odors into the

environment.

Dim. C

Chart 3.1 • Recommended Mounting Heights and Coverages

NOTE: This chart is provided as a guideline. Actual conditions may dictate variation for this data.

3.0 Installation • Recommended Mounting Heights and Coverages

Figure 3.3 • Mounting Height Dimensions (see Chart 3.1 for measurements)

Dim. A

Dim. B

Dim. C

Dim. A

Note: Dimensions A, B, & C are based upon heaters hung at the factory recommended mounting

height.

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.

Model

BTU Range

Recommended

Mounting Height

(ft.)

Coverage Area

Straight Cong.

(LxW)

Coverage Area

U-Tube Cong.

(LxW)

Distance Between

Heaters (ft.)

Dimension A

Distance Between

Heater Rows (ft.)

Dimension B

Maximum Distance

Between Heaters

and Wall (ft.)

Dimension C

20 ft. 50-65 MBH 10’ - 16’ 20’ x 12’ 12’ x 12’ 10’ - 20’ 20’ - 40’ 16’

75-100 MBH 12’ - 20’ 22’ x 15’ N/A 20’ - 30’ 30’ - 50’ 18’

30 ft. 50-65 MBH 10’ - 16’ 30’ x 14’ 17’ x 13’ 10’ - 20’ 20’ - 40’ 17’

75-125 MBH 12’ - 20’ 33’ x 18’ 18’ x 15’ 20’ - 30’ 30’ - 50’ 20’

40 ft. 50-65 MBH 10’ - 16’ 40’ x 16’ 22’ x 14’ 10’ - 20’ 20’ - 40’ 20’

75-125 MBH 12’ - 20’ 44’ x 21’ 23’ x 17’ 20’ - 30’ 30’ - 50’ 20’

150-175 MBH 16’ - 30’ 45’ x 26’ 24’ x 20’ 30’ - 40’ 40’ - 60’ 25’

50 ft. 10 0 -125 MBH 15’ - 25’ 55’ x 24’ 28’ x 19’ 20’ - 30’ 30’ - 50’ 25’

150-200 MBH 16’ - 30’ 56’ x 30’ 29’ x 23’ 30’ - 40’ 40’ - 60’ 25’

60 ft. 125 MBH 16’ - 25’ 66’ x 27’ 33’ x 21’ 20’ - 30’ 30’ - 50’ 25’

150-200 MBH 17’ - 40’ 67’ x 34’ 34’ x 26’ 30’ - 40’ 40’ - 60’ 25’

70 ft. 175-200 MBH 17’ - 40’ 78’ x 38’ 39’ x 29’ 30’ - 40’ 40’ - 60’ 30’

80 ft. 200 MBH 18’ - 45’ 89’ x 42’ 44’ x 32’ 30’ - 40’ 40’ - 60’ 30’

WARNING

Suspension of the heater must conform to applicable codes referenced in the Safety section and

these instructions.

Lay all radiant tubing out in the following order. Position tubes in approximate location (see Figure

3.4).

• 10 ft. primary combustion chamber.

• If applicable, a secondary 10 ft. aluminized treated combustion chamber (150-200 MBH models

only). Refer to the Specications Chart in the Series Insert Manual to determine if a second

combustion chamber is required for your model heater.

• Radiant emitter tubes.

Important! 150,000-200,000 BTU/h models must use the 10 ft. titanium alloy treated

combustion chamber as the rst tube downstream of the burner control box. The

combustion chamber has an orange identication sticker located on the swaged end of the

tube.

Stainless Steel Heaters must use the 409 series stainless steel combustion chamber as the

rst tube downstream of the burner control box.

Mark locations for hanging points.

NOTE: If the available hanging points do not allow for the recommended spacing then additional

hangers (P/N: TP-19B) may be necessary.

• The spacing between the burner control box mounting brackets and the rst hanger should be

approximately 2’-4”.

• The space between the rst two hangers placed on the rst tube, should be approximately

8’-10”.

• The space between hangers thereafter, one per tube, should be approximately 9’-8”.

Hanger Placement and Suspension

3.0 Installation • Hanger Placement and Suspension

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 re and/or

explosion, property damage, serious injury, or death. Always maintain minimum

clearances and post Clearance Safety Limit (P/N: PLQ) where needed.

16 in. Burner Tube

Chart 3.2 • Heater Mounting Requirements and Weights

Figure 3.4 • Heater Mounting Layout

3.0 Installation • Hanger Placement and Suspension

10 ft. Primary Combustion

Chamber

NOTE: Type varies depending on

model, refer to the Specication

Chart in the Series Insert Manual.

Radiant Emitter Tube

NOTE: If applicable use a

Secondary Combustion

Chamber. Refer to the

Specications Chart in the

Series Insert Manual.

2’-4”

8’-10”

9’-8”

Burner Control Box

Radiant Emitter

Tube(s)

Suspension

Point

Reector

Center

Support

(RCS)

Burner Control Box

Suspension Points

Suspension

Point

Suspension Point

NOTE: A sticker identifying the combustion

chamber(s) is located on the swaged end of the

tube(s). (For 150,000-200,000 BTU/h models and all

heaters with 409 stainless steel tubes only.)

Stainless Steel Tube Clamp

(150-200 MBH models only)

* Refer to page 18 for U-Bend conguration dimensions.

** Model requires 5EA-SUB accessory package when installing in a U-shaped conguration.

Model

Dimension*

Straight

Conguration

Suspension Points

Control Box

Stabilizer

Shipping Weight

Stainless Steel Ship

Weight

Chain Set Qty.

Straight

Chain Set Qty.

w/TF1B

Optional Brass

Knuckle (P/N:BK)

Optional Single

Mount Bracket

(P/N: SMB)

U congurations only

20 ft. 21’-9” / 261” 3 2 120 lbs. 145 lbs. 5 6 3 2

30 ft. 31’-5” / 377” 4 2 160 lbs. 195 lbs. 6 8 4 3**

40 ft. 41’-1” / 493” 5 2 190 lbs. 235 lbs. 7 8 5 3

50 ft. 50’-9” / 609” 6 2 235 lbs. 290 lbs. 8 10 6 4**

60 ft. 60’-5” / 725” 7 2 265 lbs. 330 lbs. 9 10 7 4

70 ft. 70’-1” / 841” 8 2 300 lbs. 375 lbs. 10 12 8 5**

80 ft. 79’-9” / 957” 9 2 330 lbs. 405 lbs. 11 12 9 5

The rst 10 ft. tube will utilize

2 hangers spaced approx. 8’

- 10’ apart. Each subsequent

tube will utilize 1 hanger.

NOTICE

3.0 Installation • Hanger Placement and Suspension

S-Hook and #1

Double-Loop Chain

Prepare mounting surface and, if necessary, weld blocks and/or drill holes (see gure 3.5).

NOTE: The burner control box and radiant tubes should be in straight alignment and level.

Fasten beam clamp, screw hook, or other type of suspension anchor to hanging point.

IF USING CHAINS: Attach 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.

IF USING GRIPPLE: (P/N: THGHxx) Pass the loop end of the cable through the hook. Thread the

other end through the loop, the locking fastener, the hanger, and back up through the locking

fastener. Adjust to appropriate length. NOTE: Threaded rod and turnbuckles may be used.

Attach 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 warping or separation.

Figure 3.5 • Mounting the Hangers

Wood Beam

Locking Fastener

Concrete Beam

Beam Clamp

Screw Hook

Threaded Rod

and Turnbuckle

Threaded Rod

Chain

I-Beam

Beam Clamp

Chain

No. 2 Gripple

(Safe Working Load @ 5:1)

I-Beam

Screw hook

with Locknut

and Washer

For 45° hanging angle, use two

S-hooks and two #1 double-loop

chains.

For variety of hanging angles, use the

Brass Knuckle (P/N: BK) tting with a #1

double-loop chain and S-hook.

45°

30°

15°

U-Tubes can be mounted at a

15°, 30°, or 45° angle with two

suspension points, using two Brass Knuckle

(P/N: BK) ttings, #1 double-loop chains, and S-hooks.

U-Tubes can be mounted from a single suspension

point using a Single Mounting Bracket (P/N: SMB)

with ve S-hooks and #1 double-loop chains.

Figure 3.6 • U-Tube Hanger Mounting Options

Figure 3.7 • Angled Hanger Mounting Options

3.0 Installation • Hanger Placement and Suspension

Exhaust

End

Single Mounting

Bracket

Brass Knuckle

Combustion / Radiant Tube Assembly

To install the radiant tubes:

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 gure 3.8). NOTE: The rst 10 ft. combustion

tube will utilize two (2) hangers and each subsequent tube will utilize one (1) hanger.

Refer to the Series Insert Manual for tube installation sequence. Place the combustion chamber as

the rst tube connected to the burner control box. These tubes have an identication sticker on

the swaged end.

Slide tube clamps onto radiant tubes (see gure 3.9).

Figure 3.8 • Attach Hangers

Figure 3.9 • Attach Tube Clamps

Hanger

Welded Seam

Faces Down

Swaged

End

Tube Clamp

3.0 Installation • Combustion / Radiant Tube Assembly

IMPORTANT! 150,000 to 200,000 BTU/h models must be

installed with a stainless steel tube clamp (P/N: TP-220) located

at the seam between the primary combustion chamber and the

second tube section downstream of the burner control box.

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.

Concave surface

Combustion / Radiant Tube

(See NOTE above and pg. 23)

Optional Elbow or U-Bend Accessory Conguration

A 90° elbow or 180° U-Bend accessory tting may be installed in the radiant tube heating system.

Refer to Chart 3.3 for minimum distance requirements from the burner control box. Consult factory

for CNG applications.

When installing an Elbow or U-Bend Accessory Fitting:

• The top clearance of an uncovered (no reector) elbow or U-Bend accessory tting to

combustibles is 18 in.

• If operating the heater unvented, 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.

• Omit one 36 in. section of turbulator bae. Refer to Bae Assembly section.

Slip-t the radiant tube sections together until tightly connected (install the swaged end of each

tube towards exhaust end). NOTE: If it is dicult to mate the tubes, they may be installed

incorrectly.

Center tube clamps over the seam where two radiant tube sections connect. If necessary, rotate

tube clamps so they will not interfere with the reector end caps during expansion and contraction

of the heater.

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.

Determine the location of the burner control box and note the placement of the mounting chains.

3.0 Installation • Optional Elbow or U-Bend Accessory Conguration

Figure 3.10 • Tube Connections

Tubes t snugly together and the tube

clamp is centered over the seam.

Tubes are not t snugly

together and the tube clamp

is not centered over the seam.

The tube clamp is tight when

the torque is achieved (normally

when seam becomes visible).

Correct Tube Connection Incorrect Tube

Connection

Figure 3.11 • Optional Tube Connections

90° Elbow Bend

180°

U-Bend

(P/N: TF1B)

(P/N: E6)

16”

6”

20”

10”

20”

Tube Clamp

12.5”

* 5EA-SUB may only be ordered at the time of heater

production. Field corrections require two (2) TR-60 packages.

*Consult factory for CNG

applications.

16”

Figure 3.12 • Elbow and U-Bend Clearances

Chart 3.3 •

Minimum Distance

From Burner Control Box to Elbow

or U-Bend Accessory Fitting*

Dimension A

U-Bend can be set in both directions

12”

Figure 3.13 • U-Bend and Elbow Dimensions

Chart 3.4 •

Overall Dimensions for Heaters

Congured With U-Bend (P/N: TF1B)

3.0 Installation • Optional Elbow or U-Bend Accessory Conguration

Elbow can be set

in both directions

Tube Clamp

Dimension A

Dimension B

P/N: TF1B

P/N: E6

8”

Models (MBH) Dimension A

50 - 100 10 ft.

110 - 125 15 ft.

130 - 175 20 ft.

200 25 ft.

Model Dimension B Notes

20 ft. 13’ - 1” / 157” N/A

30 ft. 17’ - 9” / 213” Requires P/N: 5EA-SUB *

40 ft. 22’ - 9” / 273” N/A

50 ft. 27’ - 5” / 329” Requires P/N 5EA-SUB *

60 ft. 32’ - 5” / 389” N/A

70 ft. 37’ - 3” / 447” Requires P/N 5EA-SUB *

80 ft. 42’ - 1” / 505” N/A

12.875”

16”

32.5”

4.5”

9.625”

8.625”

10.06”

5.31

18.5”

4”

11.25”

16”

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 all radiant tubes and level. Contact your local

distributor or the factory to see if your application allows for the rotation of the burner control box.

Determine the mounting chain locations for hanging the burner control box.

Fasten beam clamp, screw hook or other type of suspension anchor to hanging point.

Attach S-hook and #1 double loop chain (P/N: THCS) to anchor. Check that it is securely connected.

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

oor.

Figure 3.14 • Burner Control Box Assembly - Side View

Burner Sight Glass

Burner Control Box tube is in

straight alignment with 10’

Primary Combustion Chamber

Figure 3.15 • Burner Control Box with U-Bend - End View

Note: Special consideration must be given when U-Bend is

congured along the left side of the unit. Adequate spacing

must be provided for the service access panel.

Path of Access

Panel Door

Reector Assembly

3.0 Installation • Reector Assembly

To install the reectors (see gure 3.16):

Attach the reector center supports onto radiant tubes. NOTE: On models equipped with a single

reector center support, place at mid-point of primary combustion chamber.

Slide each reector section through the hangers beginning with the rst 10 ft. tube. The reector

should begin approximately 1 in. from the igniter box. Adjust the reector tension spring (if

applicable) into the V-groove on the top of the reector. The reectors should overlap

approximately 4 inches.

To prevent the reectors from shifting, secure the reector sections together using sheet metal

screws, except at the expansion joint (see Chart 3.6). When securing joints on reectors which are

rotated on an angle from horizontal, secure joint only on top side of reector to allow for sucient

heater expansion and contraction. NOTE: Installer to supply sheet metal screws.

Attach reector end caps (if applicable), with polished nish inward, to each end of the reector

run. Secure with clips.

Reectors and reector accessories direct infrared energy to the oor level. The reector assembly

depends on the heater conguration, proximity to combustibles, and space surrounding the heater.

Before you begin assembly, determine if the use of reector accessories are necessary (see Chart

3.5).

Figure 3.16 • Reector Assembly

SERVICE ACCESS PANEL

CONTROLS & GAS VALVE COMPARTMENT

1. Disconnect gas & electricity.

2. Remove four (4) thumbscrews.

3. Remove top cover.

4. Swing hinged panel downward.

KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.

SERVICE ACCESS PANEL

FAN COMPARTMENT

1. Disconnect gas & electricity.

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.

Reector

4” Overlap

Reector Center

Support

Radiant

Tube

Hanger

and Chain

Reector End Cap

Burner

Box

Reector Tension

Spring

Clips

13.75”

1”

Figure 3.17 • Width of

Installed Reector

- Top View

3.0 Installation • Reector Assembly • Common Optional Accessories

Chart 3.5 •

Common Optional Accessories

* Reectors cannot be rotated when used with a reector elbow (RE), U-shaped reector (RU), or

side shield (SSE).

** Refer to the Clearances to Combustibles chart in the Series Insert Manual 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 3.18 • Reector Shield Accessories

Side shield extension (P/N: SSE)

Directs infrared rays downward, away

from sidewalls and combustibles.

Elbow reector (P/N: RE)

Used over a 90° elbow

radiant tube.

U-shaped reector (P/N: RU)

Used over a ‘U’ shaped

radiant tube.

Reector Assembly Description Part Number

Elbow Reector*

90° bend, highly polished aluminum reector elbow

designed to t atop one elbow accessory tting.

U-Reector*

180° bend, highly polished aluminum reector

U-Bend designed to t atop one U-Bend accessory

tting.

Side Shield Extension**

Highly polished side shield extension used to direct

infrared rays downward, away from sidewalls and

combustibles.

SSE

Protective Guard

Used to prevent debris or objects from becoming

lodged between the radiant tube and reector.

Required when mounting heaters below 8 feet.

3.0 Installation • Bae Assembly and Placement

Dierent models and inputs utilize specic bae lengths. Remove all enclosed bae sections from

box and retain with applicable heater. Reference shipping label for proper bae size.

To assemble the baes: NOTE: Baes may be inserted into the tube while being assembled.

Determine the number of baes needed for your model number. Remove one 36 in. bae

section if heater is tted with an elbow (P/N: E6) or U-Bend (P/N: TF1B) accessory.

Orient the bae tabs at a 90° angle to the bae keyhole (see gure 3.19).

Insert one bae tab into keyhole and slide completely to one side until both bae tabs appear in

the keyhole.

Adjust the tabs to the center of the keyhole and rotate the bae 90° to lock the bae

sections together.

Repeat this process with all remaining bae sections to complete assembly.

Figure 3.19 • Assembling the Baes

Figure 3.20 • Inserting the Baes

To insert the baes:

Insert baes with the keyhole end rst.

Rotate bae assembly so that it is in the vertical position.

Slide bae assembly into the last radiant tube section, furthest from the burner control box.

NOTE: Bae assemblies longer than 10 ft. will continue to be fed into next tube section. When the

heater is congured with a ‘U’ or ‘L’ shaped accessory tting It may be necessary to cut the

bae in two sections. In this case, place as much bae as possible downstream of the tting and

the remainder just before the tting.

Bae Assembly and Placement

Bae keyhole

Bae tabs

Completed connection

IMPORTANT: Bae assembly must be ush with the end

of the last tube section and in the vertical position.

Chart 3.6 • Tube Installation Sequence, Bae Location and Secured Joints for Reectors

30 Foot

40 Foot

Burner Control Box

w/16 in. Burner Tube

Key

Expansion Joint on

Reectors

Secured Joint on

Reectors (see note)

Primary Combustion

Chamber with Clamp

Radiant Tube

Exchanger with Clamp

Bae Location

Secure vent material to exchanger with three #8

sheet metal screws. Seal with high temperature

silicone sealant. Do not use tube clamp.

20 Foot

Final Heater Assembly

3.0 Installation • Final Heater Assembly

A secondary combustion chamber is installed as the

second tube downstream from the burner control box on

150,000 to 200,000 BTU/h models, excluding HL3 and

DX3L series. Refer to the Series Insert Manual for

installation requirements.

50 Foot

60 Foot

70 Foot

80 Foot

Stainless steel clamp on 150,000 to 175,000 BTU/h

models (P/N: TP-220).

Stainless steel clamp on 150,000 to 200,000

BTU/h models (P/N: TP-220).

Stainless steel clamp on 150,000 to 200,000 BTU/h

models (P/N: TP-220).

Stainless steel clamp on 150,000 to 200,000 BTU/h

models (P/N: TP-220).

Stainless steel clamp on 150,000 to 200,000 BTU/h

models (P/N: TP-220).

NOTE: When securing joints on reectors

which are rotated on an angle from horizontal,

secure joint only on top side of reector to

allow for sucient heater expansion and

contraction.

1° to 45° Mounting Angle0° Mounting Angle

Venting

WARNING

Insucient ventilation and/or improperly sealed vents may release gas into the

building which could result in health problems, carbon monoxide poisoning, or death.

Improper venting may result in re, 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 insert manual

and applicable national, state, provincial, and local codes.

3.0 Installation • Venting

The heating system may operate either vented or unvented (see page 28). Venting can terminate

through the sidewall (horizontal) or the roof (vertical) and be individually or commonly vented.

Follow these guidelines and all applicable codes for all models, prior to installing vent material. Local

codes may vary. In the absence of local codes, refer to and comply with the National Fuel Code ANSI

Z223.1 (NFPA 54) latest edition or the National Standards of Canada.

Venting Requirements

• 4 in. single wall 26 gauge (min.) galvanized steel vent pipe or Dura/Connect single wall exible

exhaust vent must be used.

• Secure vent pipe to the swaged exhaust end of tube exchanger using three (3) #8 x 3/8 sheet

metal screws (eld supplied). Seal with high temperature silicone sealant (eld supplied).

NOTE: Tube clamps provided in kit are not to be used for this connection.

• Seal single wall vent joints with high temperature sealant (eld supplied) and three (3) #8 sheet

metal screws (eld supplied).

• Single wall galvanized vent pipe must be insulated in cold environments.

• 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 gures 3.21 & 3.22).

• Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12.

• Maximum vent length for all models is 20ft. (6 m).

• Maintain a 4 ft. minimum distance from vent to combustion air intake on heaters tted with a

U-Bend accessory tting.

24 in.

Min.*

*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 extend beyond any combustible overhang if the vent is less than 36 in. below the

combustible overhang.

Vent Cap

Single-wall Vent Pipe

Storm Collar

Adjustable Roof Flashing

Double-Wall B Vent

Roof*

Figure 3.21 • General Vent Requirements

B to C Adapter

Heater

1 in. Minimum Clearance

Fire Stop Spacer

3.0 Installation • Venting • Sidewall Venting

Single-Wall Elbow or Alternate Tee Fitting

#8 Sheet Metal Screws

Single-wall Vent Pipe

36 in.

min.**

Figure 3.22 • Sidewall Venting Requirements

Building Overhang

Sidewall

Double-Wall

B Vent

Single

Wall Vent

Wall Thimble

Sidewall Vent Cap

6 in.

min.**

B to C Adapter

Heater

1/4 in. downward

pitch per foot

1 in. Minimum Clearance -

Use Attic Insulation Shield

(Field Supplied)

3.0 Installation • Sidewall Venting • Roof Venting

Vent Termination

United States:

• Vent must terminate a minimum of 4 ft. (1.2 m) below, 4 ft. (1.2 m) horizontally from, or 1 ft.

(30 cm) above any window or door that may be opened or gravity air inlet into the building.

• Vent must terminate a minimum of 3 ft. (.9 m) above any forced air inlet that is located within

10 ft. (3.1 m).

• The bottom of the vent terminal must be located a minimum of 12 in. (30 cm) above grade level

and must extend beyond any combustible overhang. Vents adjacent to public walkways must

terminate a minimum of 7 ft. (2.1 m) above grade level.

• The vent terminal must be installed to prevent blockage by snow and protect building materials

from degradation by ue gases.

• The vent cap must be a minimum of 6 in. (15.2 cm) from the sidewall of the building.

• Vent must be a minimum of 36 in. below or extend beyond any combustible overhang.

• 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. (.9 m) from a window or door that may be opened, and

non-mechanical air supply inlet or combustion air inlet into the building.

• Vents must terminate a minimum of 6 ft. (1.8 m) from a mechanical air supply inlet.

Rooftop Venting

Guidelines:

Vent Locations and Clearances

• Separate air intake duct from vent pipe a minimum of 4 ft. (1.2 m) by placing vent pipes

higher than adjacent air intake duct.

• Venting may utilize standard B Vent cap.

• Vent cap must be a minimum of 6 in. from the sidewall of the building.

• The vent terminal must extend a minimum of 2 ft. (.6 m) above the roof.

Figure 3.23 • Rooftop Venting - Side View

*Consult the NFPA ANSI Z223.1 Gas

Vent Termination criteria if roof pitch

exceeds 9:12.

Vent Cap

Double-Wall B Vent

Firestop Spacer

Single-Wall Elbow or Alternate Tee Fitting

B to C Adapter

Roof

24 in. Min.*

Heater

Single Wall Vent Pipe

1 in. Minimum Clearance -

Use Attic Insulation Shield

(Field Supplied)

3.0 Installation • Common Venting

Common Venting

• A staggered arrangement or a dual exhaust assembly (P/N: Y) must be used when joining two

heaters to a common vent so that by-products of one heater do not ow into the adjoining

vent of the other heater.

• 6 in. diameter double-wall Type-B vent and 6 in. vent cap must be used when penetrating

through a combustible material.

• Common vented heaters must be controlled with the same thermostat. Do not operate

individually.

Figure 3.24 • Common Rooftop Venting - Side View

Figure 3.25 • Common Sidewall Venting - Top View

Double-Wall B Vent

*Consult the NFPA ANSI Z223.1 Gas

Vent Termination criteria if roof

pitch exceeds 9:12.

Heater

Dual Exhaust Assembly

Sidewall

Sidewall Vent Cap

Wall Thimble

B to C

Adapter

Single Wall Vent

6 in.

Min.

Rooftop Vent Cap

Roof

Dual Exhaust Assembly

Heater

Firestop Spacer

Double-Wall B Vent

24 in.

Min.*

Heater

B to C Adapter

Single-Wall Vent

1 in. Minimum Clearance -

Use Attic Insulation Shield

(Field Supplied)

When using an unvented conguration, consider the following:

• A factory supplied vent cap/diuser (P/N: WVE-GALV) must be used.

• Where unvented heaters are used, natural or mechanical means must be provided to supply

adequate ventilation - a minimum of

4 cfm/1000 BTU/h (0.38 m

/kW) input of installed heaters.

NOTE: Gravity or mechanical means may be used to accomplish the air displacement. Local

codes may require that the mechanical exhaust system be interlocked with the electrical

supply line to the heaters, enabling both to function simultaneously.

• The minimum clearance between the air intake and the exhaust terminal is 4 ft.

• Exhaust openings for removing the ue products must be located above the level of the

heater(s).

• Use of combustion air intake.

3.0 Installation • Optional Unvented Operation • Combustion Air Requirements

WARNING

Not for residential use. The use of unvented tube heaters in residential indoor spaces

may result in property damage, serious injury, or death. Use unvented operation in

commercial and industrial installations with proper ventilation rates only.

Optional Unvented Operation

Figure 3.26 • Minimum End Clearances

12 in. Min.

Combustion Air Requirements

Combustion air may be supplied to the heater by indoor or outdoor means.

If using combustion air intake from indoors, the required volume of the space must be a minimum of

50 ft

per 1000 BTU/h (4.8 m

/kW) unless the building is of unusually tight construction. If the building

is of unusually tight construction with air inltration 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 inltration rates.

unvented

heaters

12 in. Min.

All heaters

Non-contaminated outside air for combustion must be ducted to the heater if any of the following apply:

• Chemicals such as chlorinated or uorinated 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 inltration rate of less the 0.40 air changes

per hour.

3.0 Installation • Combustion Air Requirements

Figure 3.27

Vertical Outside Air Supply for

Single Heater Intake - Side View

Figure 3.28 • Horizontal Outside Air

Supplyfor Single Heater Intake

- Side View

Figure 3.29 • Vertical Outside Air

Supply for Common Intake - Side

View

Roof Intake Cap

Roof

18 in.

minimum

Wall

Air Intake Cap

Roof

Burner

Control Box

Air Inlet Connection

4” pipe

Roof Intake Cap

18 in.

minimum

6” pipe

NOTE: Common

intake heaters must

share the same

thermostat.

Combustion air intake may be located on either the sidewall or roof (see gure 3.27 - 3.29).

Burner

Control Box

(Flexible boot and band

clamps are recommended)

Air Inlet Connection

(Flexible boot and band

clamps are recommended)

Air Inlet Connection

(Flexible boot and band

clamps are recommended)

Air Inlet Connection

Burner

Control Box

Burner

Control Box

4” intake pipe4” intake pipe

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.

3.0 Installation • Combustion Air Requirements • Gas Supply

Gas Supply

WARNING

Improperly connected gas lines may result in re, explosion,

poisonous fumes, toxic gases, asphyxiation, or death.

Connect gas lines in accordance to national, state, provincial,

and local codes.

Air Intake Cap

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.

• 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.

Air Intake Duct Size Max. Intake Length Duct Size Max. Intake Length

General

• No more than two 90° elbows are allowed.

• Allow for expansion. Use a 4 in. exible 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 (P/N: WIV-4) 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.

Chart 3.7 • Limitations for length and size of combustion air intake duct

Burner Control Box

Single Heater Intake Dual Heater Intake

Consult factory for longer intake lengths.

Guidelines:

Air Inlet Connection

(Flexible boot and band

clamps are recommended)

3.0 Installation • Gas Supply

Chart 3.8 • Manifold Pressure

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 exible 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 exible

connector (Figure 3.30) or, if national or local codes require rigid piping, a swing joint. See the safety

messages at the beginning of this section.

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, oor, 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.

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: For high pressure gas above 14” W.C., a high pressure

regulator and ball valve must be utilized and located upstream of the ex connector.

WARNING

Failure to install, operate, or service this appliance in the approved manner may result in

property damage, injury, or death. Only trained, qualied gas installation and service

personnel may install or service this equipment.

To connect the gas:

• Test and conrm 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 sucient 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.

Pressure Equivalents: 1 inch W.C. equals .058 oz/sq. in. equals 2.49 mbar.

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.

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.

Propane 10.0 Inches W.C. 11.0 Inches W.C. 14.0 Inches W.C.

Form the stainless steel exible connector (supplied) into a smooth C-shape allowing 12 in.

between the exible connector’s end nuts (see gure 3.30).

Attach a ball valve (eld supplied) 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 (typically provided on ball valve).

Attach the exible connector to the adapter and burner control box inlet. Seal the joints.

NOTE: Excessive torque on the manifold may misalign the orice. Always use two wrenches to

tighten mating pipe connections.

Final assembly must be tested for gas leaks according to NFPA 54 and all local codes and/or

Standards.

3.0 Installation • Gas Supply

Figure 3.30 • Gas Connection (Flexible Gas

Connection shown) - Side View

CAUTION

When using a stainless steel exible connector, do not attach the connector nuts directly to the

gas pipe supply. Connector nuts must be installed to an approved adapter.

Figure 3.31 • Gas Connection (Flexible Gas

Connection shown) - End View

WARNING

Testing for gas leaks with an open ame or other sources of ignition may lead to a re or

explosion and cause serious injury or death. Test in accordance with NFPA or local

codes.

12”

Stainless Steel Gas Connector,

formed into smooth C-Shape

Adapter

2 in. max

displacement

Drip Leg/

Sediment Trap

Heater Movement

Adapter

Burner

Control Box

Side View

Ball Valve / Inlet Tap

(Field Supplied)

Ball Valve / Inlet Tap

(Field Supplied)

45°

Remove cap to

clean sediment trap.

45°

Burner Control Box

End View

NOTE: Do not exceed 14 Inches W.C. to the appliance.

4.0 Operation

4.0 Operation • Lighting and Shutdown Procedures

WARNING

Refer to the Series Insert Manual for any specic directions (e.g., single stage, two stage operation,

relight after a failure, etc.).

LIGHTING PROCEDURES:

Verify that service lid is secured.

Open (turn on) gas supply to the heater.

Close (turn on) electrical circuit (typically thermostat).

If the heater fails to light, turn o gas, open electrical circuit (set thermostat to lowest setting or to

o). Wait ve (5) minutes before repeating above steps.

SHUTDOWN PROCEDURES:

Open (turn o) electrical circuit.

Close (turn o) gas supply to the heater.

Wait ve (5) minutes before relighting heater.

This heater is not equipped with a pilot ignition system.

Do not attempt to light the system manually.

5.0 Maintenance

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 oil will extend bearing life signicantly.

Motors with sealed ball bearings (no oil ports) do not require oiling. 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.

Check lubrication instructions on motor. If oiling is required,

add three to four drops of SAE 20 electric motor oil:

• After three years or 25,000 hours of operation (light-duty)

• After two years or 8,000 hours of operation (medium-

duty)

• Annually or after 1,500 hours of operation (heavy-duty)

• 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 ame and ame sense. Flame should extend directly

outward from burner without oating 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 o gas supply to

the heater. Contact service personnel.

• Reectors: Inspect the integrity of the reectors for damage, separation, missing or misaligned

sections. Do not operate if repairs are necessary. Repair or replace as required per the general

installation manual. To maintain eective infrared heating, always keep both sides of the reector

clean. Dirt and dust can be vacuumed up or wiped with a soap and water solution. Use metal

polish if the reectors are severely dirty.

Contact service personnel if repairs are necessary. Do not operate unit.

Never over-oil the motor or

premature failure may occur.

NOTICE

5.0 Maintenance • Troubleshooting Guide

Symptom Possible Cause Corrective Action

Thermostat closed, fan doesn’t

operate.

• Blown fuse.

• Faulty thermostat.

• Loose or disconnected wire.

• Faulty fan.

• Replace.

• Repair as required.

• Lubricate, repair or replace.

Thermostat closed. Fan operates.

Switch does not close.

• Loose or disconnected wire.

• Box lid or gasket not in place.

• Plugged pressure switch lines.

• Plugged or restricted exhaust vent.

• Bae location incorrect.

• Faulty pressure switch.

• Repair as required.

• Put in place.

• Clean as necessary.

• Remove foreign matter.

• Re-position baes at vent end.

• Replace only. Do not adjust.

Thermostat closed. Fan operates.

Pressure switch closes. No glo-

bar igniter.

• Faulty glo-bar igniter.

• Faulty circuit board.

• Replace.

Thermostat closed. Fan operates.

Pressure switch close. Glo-bar

energizes. Valve does not open.

• Disconnect gas valve wires.

• Faulty circuit board.

• Faulty gas valve.

• Repair as required.

• Replace.

Thermostat closed. Fan and glo-

bar /spark igniter operate. Ignition

occurs, burner cycles

o in less than 60 seconds.

• Low gas pressure.

• Bae improperly positioned.

• Faulty pressure switch.

• Restricted ue vent.

• No electrical ground.

• Reversed polarity.

• Provide required gas pressure.

• Re-position bae at vent end.

• Replace.

• Remove foreign matter.

• Connect electrical ground to junction box.

• Repair.

Thermostat closed. Fan and glo-

bar /spark igniter operate. After 45

seconds glo-bar shuts o

(15 seconds for spark igniter). No

ignition.

• Closed gas supply.

• Dirty or restricted orice.

• Faulty valve. Disconnected wire.

• Inlet pressure exceeds 14 inches

W.C.

• Open all gas connections.

• Remove. Clean with a soft object.

• Replace or repair.

• Lower inlet pressure.

Loss of heater eciency. • Low gas pressure.

• Dirty or restricted orice.

• Foreign matter inside burner.

• Unit cycles on and o.

• Reector is dirty.

• Reector not in place.

• Clogged fan blower.

• Provide required gas pressure.

• Remove. Clean with a soft object.

• Clean as necessary.

• Check previous symptom.

• Clean with aluminum cleaner and soft

cloth.

• Put in place.

• Clean.

Radiant tube leaking burnt gases. • Loose tube connections.

• Holes or cracks in radiant tubes.

• Ensure that tubes are fully connected

and clamped properly.

• Replace.

Condensation. • Stack length is too long.

• Light gauge vent stack used.

• Contaminated combustion air.

• Shorten stack length.

• Minimum of 26 ga. vent pipe required.

• Provide fresh air inlet duct.

Tube bowing. • Insucient combustion air.

• Over red.

• Contaminated combustion air.

• Heater unable to expand properly.

• Provide 1 sq. in. of free air for every

5,000 BTU/h of input.

• Check gas pressure and orice size.

• Provide fresh air inlet duct.

• Remount with exible inlet or vent pipe.

Tube corroding. • Contaminated combustion air. • Provide fresh air inlet duct.

Visual inspection of burner

operation not possible.

• Dirty or sooted sight glass.

• Unit mounted upside-down.

• Remove, clean or replace.

• Mount correctly.

Stack sooting. • Insucient combustion air.

• Improper gas.

• Dirty fan or blockage.

• Provide 1 sq. in. of free air for every

5,000 BTU/h of input.

• Correct with proper gas input (or clean).

Odor or fumes in space

(normal during rst ring and

will subside after initial burn o,

approximately 20 minutes).

• Vaporized solvents decomposing

when contacting radiant tubes.

• Evaporation of oils, solvents at oor

level.

• Loose tube / vent connections.

• Provide proper ventilation.

• Tighten tube clamps to 40-60 ft-lb.

• Seal vent pipes.

Chart 5.1 • Troubleshooting Guide

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 or three years after date of

purchase. See specic product warranties on page 20 of the Series Insert Manual that accompanied this piece. 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 specic legal rights which vary from jurisdiction to

jurisdiction.

Additional Limited Warranty: In addition to the above mentioned limited 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. See specic product warranties on page 20 of the

Series Insert Manual that accompanied this piece.

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, re, ood, short or reduced supply of raw

materials, or parts.

The warranties herein shall be null and void if the heater is not installed by a competent heating contractor and/or if the

heater is not installed according to Company instructions, normal industry practices and/or if the heater is not

maintained and repaired according to Company’s instructions. Normal product degradation and wear (rust, oxidation,

etc.) does not constitute a material defect and applicable warranty claim.

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 eort to provide product information and

illustrate the products in this literature accurately; however, such information and illustrations are for the sole purpose of

identication, and do not express or imply a warranty that the products are merchantable, or t for a particular purpose,

or that the products will necessarily conform to the illustrations or descriptions. Except as provided below, no warranty

or armation 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 tness 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 eort 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, rst 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 le claim with carrier.

6.0 Limited Warranty

21400 Hoover Road • Warren, MI 48089

Phone: (586) 756-0950 Fax: (586) 756-2626

www.detroitradiant.com • sales@drp-co.com

Printed in U. S. A.