BRANT RADIANT HL3 User Manual

!

HL3 Series

Insert Manual

For complete installation instructions, see the Tube Heater General Manual
that accompanies this Series Insert Manual.

The HL3 Series Infrared Tube Heater is a positive pressure, two-stage radiant heater system. This insert
manual is a supplement to the Tube Heater General Manual and provides specific information related to
the HL3 Series model. All persons involved with the installation, operation and maintenance of the heater
system must read and understand the information in this insert manual and the accompanying Tube
Heater General Manual.

For Your Safety

If you smell gas:

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read the installation, operation and maintenance
instructions thoroughly before installing or servicing this equipment.

This heater must be installed and serviced by trained gas installation and service
personnel only. Failure to comply could result in personal injury, asphyxiation, death,
fire or property damage.

In locations used for the storage of combustible materials, signs must be posted to
specify the maximum permissible stacking height to maintain the required clearances
from the heater to the combustibles. Signs must either be posted adjacent to the
heater thermostats or in the absence of such thermostats, in a conspicuous location.

Not for residential use! Do not use this heater in the home, sleeping quarters,
attached garages, etc. Installation of a commercial tube heater system in

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

• Do not try to light any appliance. • Immediately call your gas supplier from a neighbor’s phone.

• Do not touch any electrical switch. • Follow the gas supplier’s instructions.

• Do not use any phone in your building. • If you cannot reach your gas supplier, call the fire department.

INSTALLER: Present this manual to the end user.

Keep these instructions in a clean and dry place for future reference.

Model#: ___________________ Serial #: _________________________

(located on rating label)

Replace s: Rev.13012_ 3M -8 /12(CDS )

LIOHL3-Rev. 27512

Print: 3M-8 /13_r2-5/14(CDS)

HL3 Series

Contents

1.0 Safety...................................................................3

Safety Labels and Locations ............................................3

Clearances to Combustibles ............................................4

2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical Requirements................................................6

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Specifications ......................................................10

Tube Installation Sequence ............................................11

3.0 Op eration ..............................................................12

Sequence of Operation ...............................................12

Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.0 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.0 Parts ..................................................................18

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Parts List ..........................................................18

Kit Contents Check List ...............................................20

Approvals..........................................................20

Limited Warranty ....................................................20

NOTE: See page 10 for a list of available models and specifications.

2

- 24V HEATER OUTPUT -

- 120V HEATER INPUT -

Air Metering Orifice

DO NOT REMOVE

TP-114

TP-3014

3”

SAMPLE

HL3 Series

1.0 Safety • Safety Labels and Locations

1.0 Safety

Read and understand all safety information and warnings in this insert manual and the Tube
Heater General Manual before installation, operation and maintenance of the radiant tube
heater system.

Safety Labels and Their Locations

Product safety signs or labels should be replaced by the product user when they no longer are legible.
Contact either your local distributor or the product manufacturer for obtaining replacement signs or labels.

F/N: LLV3EP2

(Orange
crescent -with
relay option)

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.

SERVICE ACCESS PANEL

120V

F/N: LLV3EP1

24V

F/N: LLV3EP4

(White crescent

- no relay)

Top Panel

SERVICE ACCESS PANEL

KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.

4. Swing hinged panel downward.

3. Remove top cover.

2. Remove four (4) thumbscrews.

1. Disconnect gas & electricity.

CONTROLS & GAS VALVE COMPARTMENT

HOT

NEUTRAL

EARTH

HIGH

LOW

24V OUT

HOT

NEUTRAL

120V

EARTH

- 120V HEATER INPUT -

HIGH

LOW

24V

NEUTRAL

- 24V HEATER INPUT -

F/N: LLV3EP14

(Operational Indicator Lights)

F/N: LLAC

Air Metering Orifice

Back Panel

F/N: LLTB018 (Natural Gas)

F/N: LLTB019 (LP Gas)

Bottom Panel

KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.

CAUTION: HOT SURFACE.

SERVICE ACCESS PANEL

cover upward and outward.

2. Remove cover by lifting top

1. Disconnect gas & electricity.

IGNITER & FLAME SENSE COMPARTMENT

F/N: LLTCL001L/C/R

Clearance to Combustibles

Labels

F/N: LLLOGO1 Logo Label

3

!

AVOID EQUIPMENT FAILURE

THIS 10 FT. TUBE IS THE

COMBUSTION CHAMBER.

THIS TUBE MUST BE THE FIRST TUBE

FOLLOWING THE BURNER CONTROL BOX.

!

INSTALLER

The combustion chamber utilizes either 409
stainless, titanium alloy or aluminized steel -

depending on the model number of your heater.

Rotate the tube’s welded seam to bottom.

Consult the manual(s) for further details.

1.0 Safety • Safety Labels and Locations • Clearance to Combustibles

HL3 Series

SERVICE ACCESS PANEL

IGNITER & FLAME SENSE COMPARTMENT

1. Turn off gas & electricity.

2. Remove cover by lifting top

cover upward and outward.

CAUTION: HOT SURFACE.

KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.

F/N : LLTB 0 2 6

SERVICE ACCESS PANEL

IGNITER & FLAME SENSE COMPARTMENT

1. Disconnect gas & electricity.

2. Remove cover by lifting top

cover upward and outward.

CAUTION: HOT SURFACE.

KEEP COVER IN PLACE. REMOVE FOR SERVICE ONLY.

Controls Compartment

SERVICE ACCESS PANEL

F/N: LLTB025R

SERVICE ACCESS PANEL

RE-VERBER-RAY INFRA-RED RADIANT TUBE HEATER

®

FOR INDOOR (Non-Residential) INSTALLATION ONLY.
Class IIIA Permanent Label

MODEL NO.

INPUT BTU/H

125,000 / 95,000

Manifold Pressure:

3.5 in.

Maximum Inlet Pressure:

14 in.

Minimum Inlet Pressure:

5.0 in.

Inches W.C.P.

Inches W.C.P.

Inches W.C.P.

FOR USE WITH

Natural Gas

Heater Type

C1

Minimum Mounting Angle:

045DEGREES

Maximum Mounting Angle:

DEGREES

Serial No.: 1208XXXXXXXXXX 0001

DET-40-125N(-3)

HL3

Volts AC:

120VAC - 60Hz

AMPS - Starting:

1.7

AMPS - Running:

1.1

Combustion Chamber:

4” Black Coated Aluminized

DESIGN COMPLIES WITH:

ANSI Z83.20b-2004-GAS FIRED LOW INTENSITY INFRA-RED HTR.

DETROIT RADIANT PRODUCTS COMPANY

21400 HOOVER ROAD - WARREN, MI
[phone] - www. drp-co.com

16” Burner Tube Combustion Chamber

: LLTB 0 24L

F/N

HL-40-125N(-3)

HL3-125

Production Code:

7.08

Version:

Data on this label is for the model shown on this label. If your heater has been converted,
this information is not accurate. Please contact the factory for assistance.

BURNER COMPONENTS:

Gas Valve:
Circuit Board:
Wire Harness:
N.O. Switch:
N.O. VL Orifice:
N.C. Switch:
N.C. VL Orifice:
Diff Switch:
Diff VL Orifice:
Igniter:
Burner:
16” Tube:
Ind. Lights:

HEATER

TYPE:

C1

For parts replacement information, contact factory at 586-756-0950 or visit www.drp-co.com/parts.

(Specify TP-#’s)

36G54-224-N
35-66
3 PCS Harness
None
None
None
None
IS22010051F5166

SAMPLE

Grey (+ / -)
Norton
Mid
4” Gen.
Yellow - 24V

Orifice Type:
Gas:

TP-204#

Air:

1 5/16”

TP-44#191 7/16”

840A
851B
3252
N/A

N/A

264E

50
201B
380
828

C1 C2 C3

19

Serial No.: 0804XXXXXXXXXX 0001

None

Stock:

Add-On:

N/A

On Circuit Board

Diag. Light:

None

Term. Block:

40 VA

Transformer:

Fasco Lg.

Fan:

50Hz - 120V

Alt. Fan:

When Specified

Alt. Fan Usage:

Picker x2

Relay:

None

Filter:

3 T-plug

24 Volt In:

6’ Blk. Cord

120 Volt In:

7/8” FC

Gas In:

None

Extra VL Orifice:

Internal Use Only:

Electric:

19

LLWT038

Tag:

1 5/16”

None

Special 1:
Special 2:

N/A
826
55A
55B

1325
N/A
832
333
83

17
1 7/16”

Burner Control Box Component Label

(located inside the center compartment lid)

RE-VERBER-RAY INFRA-RED RADIANT TUBE HEATER

®

FOR OUTDOOR USE AND INDOOR (Non-Residential) INSTALLATION ONLY.
Class IIIA Permanent Label

MODEL NO.

HL-40-125N(-3)

Volts AC:

120V - 60Hz

AMPS - Starting:

4.8

AMPS - Running:

1.1

Combustion Chamber:

4” Black Coated Aluminized

DESIGN COMPLIES WITH:

ANSI Z83.20b-2004-GAS FIRED LOW INTENSITY INFRA-RED HTR.

DETROIT RADIANT PRODUCTS COMPANY

21400 HOOVER ROAD - WARREN, MI
[phone] - www.drp-co.com

INPUT BTU/H

125,000 / 95,000

Manifold Pressure:

3.5 in.

W.C.P.

Maximum Inlet Pressure:

14 in.

W.C.P.

Minimum Inlet Pressure:

5.0 in.

W.C.P.

SAMPLE

For stainless steel upgrades: The combustion tube is 409 Series stainless steel.

FOR USE WITH

Natural Gas

Heater Type

C1

Minimum Mounting Angle:

045DEGREES

Maximum Mounting Angle:

DEGREES

Serial No.: 0807XXXXXXXXXX 0001

Rating
Plate

Radiant Tube(s)

Fan Compartment

F/N: LL01 - Clearance Safety Tag
(Affix adjacent to heater’s thermostat)

Clearance to Combustibles

Clearance to combustibles is defined as the minimum distance that must exist between the tube surface,
or reflector, and any combustible items (see Figure 1.1). It also pertains to the distance that must be
maintained from moving objects around the tube heater.

F/N: LLTB004 (orange)

(150,000-200,000 BTU/h models and all

heaters with 409 stainless steel tubes)

WARNING

Placement of explosive objects, flammable objects, liquids and vapors close to
the heater may result in explosion, fire, property damage, serious injury or death.
Do not store or use explosive objects, liquids or vapor in the vicinity of the heater.

4

HL3 Series

1.0 Safety • Clearance to Combustibles

When installing the tube heater system, clearances to combustibles for the model tube heater and
configuration must be maintained. Refer to Chart 1.1 below to determine the required distances for your model.

Chart 1.1 • Clearance to Combustibles in Inches (see Figure 1.1 for Mounting Angles)

Mounting

Model Number

HL3 (20, 30, 40) - (65, 75) [N, P]

with 1 side shield 0° 29 8 6 60
with 2 side shields 0° 9 9 6 60
20 ft. from burner 0° 7 7 6 30

HL3 (30, 40) - 100 [N, P]

with 1 side shield 0° 29 8 6 66
with 2 side shields 0° 16 16 6 66
20 ft. from burner 0° 7 7 6 30

HL3 (30, 40, 50) - 125 [N, P]

with 1 side shield 0° 42 8 6 76
with 2 side shields 0° 20 20 6 76
20 ft. from burner 0° 7 7 6 30

HL3 (40, 50, 60) - 150 [N, P]

with 1 side shield 0° 42 8 6 81
with 2 side shields 0° 23 23 6 81
20 ft. from burner 0° 11 11 6 44

HL3 (40, 50, 60, 70) - 175 [N, P]

with 1 side shield 0° 50 8 6 92
with 2 side shields 0° 30 30 6 92
20 ft. from burner 0° 11 11 6 44

HL3 (50, 60, 70) - 200 [N, P]

with 1 side shield 0° 54 8 6 94
with 2 side shields 0° 30 30 6 94
20 ft. from burner 0° 11 11 6 44

Heaters mounted on an angle between 0° to 45° must maintain clearances posted for 0° or 45°; whichever is greater.

*

Angle*

0° 9 9 6 60

45° 39 8 10 60

0° 14 14 6 66

45° 39 8 10 66

0° 20 20 6 76

45° 58 8 10 76

0° 24 24 6 81

45° 58 8 10 81

0° 34 34 6 92

45° 63 8 10 92

0° 41 41 6 94

45° 63 8 10 94

Front Behind Top Below

Sides

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.

Figure 1.1 • Mounting Angles

0° Mounting Angle

Top

Side

Side

Below

Front

45° Mounting Angle

Top

Behind

Below

0° Mounting Angle

with 1 Side Shield

(P/N: SSE)

Top

Front Behind

Below

5

0° Mounting Angle

with 2 Side Shields

(P/N: SSE)

Top

Side Side

Below

2.0 Installation • Electrical Requirements

!

2.0 Installation

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property
damage, serious injury or death. Read and understand the installation, operating and
maintenance instructions thoroughly before installing or servicing this equipment. Only
trained, qualified gas installation and service personnel may install or service this equipment.

Not for residential use! Do not use this heater in the home, sleeping quarters, attached
garages, etc. Installation of a commercial tube heater system in residential indoor

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

Instructions for the following are detailed in the Tube Heater General Manual:

• Design considerations

• Hanger suspension and placement

• Tube layout and assembly

• Burner control box suspension

• Reflectors (and accessories)

• Venting and combustion air intake

• Gas requirements

• Baffle assembly

HL3 Series

Note: Electronic versions of all manuals are available at www.detroitradiant.com

Gas Requirements

Type of Gas

Natural 3.5 Inches. W.C. 5.0 Inches. W.C. 14.0 Inches. W.C.

Liquefied Petroleum 10.0 Inches. W.C. 11. 0 Inches. W.C. 14.0 Inches. W.C.

IMPORTANT: Consult the Tube Heater General Manual for gas connection requirements.

Required Manifold

Pressure

Minimum Inlet

Pressure

Maximum Inlet

Pressure

Electrical Requirements

• 120 Volt - 60 Hz GRD, 3-wire.

• 24V thermostat connection.

• Starting current 4.8 amps

• Running current 1.1 amps

NOTICE

Connecting the thermostat with a voltage other than 24V may damage the heater. The HL3 Series
requires a 24V connection to the thermostat. This is either supplied by the heater internally (standard) or
by an external transformer (with optional isolation relays, P/N: HLRP). See Figure 2.1.

6

!

HL3 Series

If optional yellow

control cord is installed then

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 2.1 • Field Wiring Diagrams

A. Single Heater, No Relay (Single Thermostat).

1/4” spade terminals

required (as supplied)

N

2.0 Installation • Wiring

To 120VAC
grounded outlet.

24V

HL3

Burner Box

NOTE:

24VAC

Low

Thermostat

When using a thermostat that requires constant power a common wire must
be run form the C terminal on the thermostat back to the transformer.

High

B. Multiple Heaters with Relay Option (Single Thermostat).

1/4” spade terminals

required (as supplied)

Thermostat

N

24VAC

Additional wire needed for thermostats
that require constant power.

Low

High

External Transformer

(field supplied)

24VAC

120VAC

the following wire colors apply:

24VAC Out = green

Low = white

High = black

To 120VAC grounded outlet.

HL3

Burner Box

To 120VAC grounded outlet.

HL3

Burner Box

To 120VAC grounded outlet.

NOTE: If optional yellow control cord is
installed then the following wire colors apply:

Neutral = green
Low = white
High = black

HL3

Burner Box

120VAC Power (observe polarity)

N

7

FEN 35-66 LADDER DIAGRAM - W/OUT HLRP RELAY PICKERS

L1

N

GND

VAL

24V

TH

PS

IGN/FS

L2

IGN/240L1IGN/120

LED

FC±

F2 F1

STAGE

1

2

FEN 35-66 LADDER DIAGRAM - W/OUT HLRP RELAY PICKERS

(FIELD SUPPLIED)

(FIELD SUPPLIED)

2-STAGE T'STAT

BK

GAS VALV E

BK

120VAC

L1

O

R

BL

BK

IGNITOR

FLAME

FEN 35-66 IGNITION MODULE

W

W

PR

BLOWER

BK

ROD

24VAC

120VAC

N

G

G

BK

BL

PK

BK

O

O

BK

TERMINAL

T'STAT

LIGHTS

INDICATOR

BK

BK

G

BK

Y

BK

TRANSFORMER

W

APS

PRESSURE SWITCH

GY

W

BK

BL

FEN 35-66 BLOCK DIAGRAM - W/OUT RELAY PICKERS

OR

2.0 Installation • Wiring

HL3 Series

Before field wiring this appliance - Check existing wiring; replace if necessary.

Note: If any of the original wire supplied with the appliance must be replaced, it must be replaced with

wiring material having a temperature rating of at least 105° C.

Figure 2.2 • Internal Wiring Diagrams

A. 35-66 Ladder Diagram

120VAC

BK

BK

Y

TRANSFORMER

120VAC

T'STAT
TERMINAL

1

STAGE

2

B. 35-66 Block Diagram

(FIELD SUPPLIED)

2

TERMINAL

24V

1

STAG E

2-STAGE T'STAT

(FIELD SUPPLIED)

IGNITION MODULE

L1

BK

120VAC

N

(FIELD SUPPLIED)

O

R

2-STAGE T'STAT

(FIELD SUPPLIED)

BK

BK

BK

BK

BK

INDICATOR

LIGHTS

BL

R

T'STAT

FEN 35-66

BK

BK

W

BL

PRESSURE SWITCH

APS

GAS VALV E

G

O

G

GY

BL

O

PK

PR

BK

BK

BK

BL

BK

G

BL

BL

O

PK

GY

G

GND

FEN 35-66 IGNITION MODULE

O

O

PK

BL

W

BK

BURNER

BLOWER

24VAC

W

BK

W

BK

O

TH

PS

24V

VAL

IGN/FS

LED

G

GY

APS
PRESSURE

+

SWITCH

BK

PR

Y

TRANSFORMER

BK

W

IGNITOR

IGNITOR

BK

W

L2

IGN/240L1IGN/120

F2 F1

FC±

BK

FLAME

ROD

GAS VALV E

BK

BLOWER

R

FLAME

ROD

GY

M

HI

CC

MCHI
C

LO

HI

PR

W

ON

BK

BK

G

G

OFF

BK

BK

INDICAT

LIGHTS

BK

8

FEN 35-66 LADDER DIAGRAM - WITH RELAY PICKERS

GND

VAL

24V

TH

PS

IGN/FS

L2

IGN/240

L1

IGN/120

LED

FC ±

F2

F1

STAGE

12

FIELD SUPPLIED

TRANSFORMER

CONNECTION

T'STAT

BK

GAS VALV E

G

LIGHTS

BK

INDICATO R

GY

PRESSURE

SWITCH

APS1

FEN 35-66 LADDER DIAGRAM - WITH RELAY PICKERS

120VAC

L1

IGNITOR

FLAME

FEN 35-66 IGNITION MODULE

W

W

PR

BLOWER

BK

ROD

BK

24VAC

120VAC

W

N

G

BK

BL

PK

BK

O

O

Y

BK

BK

G

BK

BK

BL

LOW

RELAY

BK

HIGH

RELAY

120/24VAC
TRANSFORMER

(FIELD SUPPLIED)

24VAC

120VAC

(FIELD SUPPLIED)

2-STAGE T'STAT

L1 N

Y(G)*

R (BK)*

O (W)*

120V

FEN 35-66 BLOCK DIAGRAM - WITH RELAY PICKERS

120V

OR

BL

BK

W

GY

BL

YY

R

* If thermostat connetion is via a yellow
control cord, use parenthesized color code

HL3 Series

Figure 2.3 • Alternative Wiring Diagrams

A. 35-66 Ladder Diagram - With HLRP Relay

2.0 Installation • Wiring

L1

BK

Y(G)*

O (W)*

R (BK)*

T'STAT

CONNECTION

120VAC

B. 35-66 Block Diagram - With HLRP Relay

L1 N

12

STAGE

2-STAGE T'STAT

(FIELD SUPPLIED)

24VAC

120VAC

120/24VAC
TRANSFORMER

(FIELD SUPPLIED)

BK

BK

INDICATO R

Y(G)*

R(BK)*

T'STAT

24V

2-STAGE T'STAT

(FIELD SUPPLIED)

CONNECTION

1

2

STAGE

O(W)*

FEN 35-66

IGNITION MODULE

120/24V

TRANSFORMER

(FIELD SUPPLIED)

L1

L1

N

AC

AC

BK

BK

W

FIELD SUPPLIED

* If thermostat connetion is via a yellow
control cord, use parenthesized color code

HIGH

RELAY

BK

BK

LIGHTS

FIELD SUPPLIED

COM

Y

COM

O

BK

BK

BL

BL

PRESSURE

GY

YY

O

SWITCH

APS1

R

LOW

RELAY

BK

GY

G

GAS VALV E

* If thermostat connetion is via a yellow
control cord, use parenthesized color code

HIGH

NO

NC

RELAY

LOW
RELAY

GY

NC

NO

BL

O

GY

O

BL

G

BL

PK

PR

BK

GY

O

PK

BL

W

BK

BK

BK

BK

BLOWER

Y

TRANSFORMER

120VAC

24VAC

PK

BL

O

BL

G

BK

W

BK

W

G

VAL

GND

24V

TH

PS

IGN/FS

LED

FEN 35-66 IGNITION MODULE

R

G

APS1 (NO)
PRESSURE

+

SWITCH

BK

PR

Y

TRANSFORMER

BK

W

IGNITOR

GAS VALV E

BK

L2

IGN/240

FC ±

FLAME

ROD

W

L1

IGN/120

F1

F2

R

IGNITOR

BK

BLOWER

BK

GY

HI M

CC

HI
C

LO

HI

M
C

W

BK

ON

FLAME

ROD

BK

BK

PR

OFF

G

G

INDICAT

LIGHTS

BK

BK

N

BK

9

2.0 Installation • Product Specifications

Specifications

Chart 2.1 • Specifications

Model

Number

Gas Type

(select one)

BTU/h

(High Fire)

BTU/h

HL3 Series

(Low Fire)

Straight Length

U-Tube Length

Standard

Weight (lbs.)

Stainless Steel Weight

(lbs.)

Recommended

Mounting Height

Combustion Chamber (Black Coated)

Radiant Emitter Tube(s)

(Black Coated)

Radiant Surface Area

(sq. ft.)

36” Baffle Quantity

HL3-20-65

HL3-20-75

HL3-30-65

HL3-30-75

HL3-30-100

HL 3-30 -125

HL3-40-65

HL3-40 -75

HL 3-40-100

HL 3-40-125

HL 3-40-150

HL 3-40-175

HL3-50-125

HL3-50-150

HL3-50-175

HL3-50-200

N or LP 65,000 50,000 21’-9” 13’-1” 120 N/A 9’ to 14’ Alum Alum 20.2 5

N or LP 75,000 50,000 21’-9” 13’-1” 120 145 10’ to 15’ Alum Alum 20.2 5

N or LP 65,000 50,000 31’-5” **17’- 9 ” 16 0 N/A 10’ to 15’ Alum Alum 30.4 4

N or LP 75,000 50,000 31’-5” **17’- 9 ” 16 0 195 11’ to 18’ Alum Alum 30.4 5

N or LP 100,000 65,000 31’-5” **17’-9” 160 195 12’ to 20’ Alum Alum 30.4 5

N or LP 125,000 82,000 31’-5” **17 ’- 9 ” 160 195 13’ to 23’ Alum Alum 30.4 6

N or LP 65,000 50,000 41’-1” 22’-9” 190 N/A 11’ to 18’ Alum Alum 40.5 3

N or LP 75,000 50,000 41’-1” 22’-9” 190 235 11’ to 18’ Alum Alum 40.5 4

N or LP 100,000 65,000 41’-1” 22’-9” 190 235 12’ to 20’ Alum Alum 40.5 4

N or LP 125,000 82,000 41’-1” 22’-9” 190 235 13’ to 23’ Alum Alum 40.5 5

N or LP *150,000 100,000 41’-1” 22’-9” 190 235 14’ to 25’ Titan Alum 40.5 5

N or LP *175,000 125,000 41’-1” 22’-9” 190 235 15’ to 27’ Titan Alum 40.5 5

N or LP 125,000 82,000 50’-9” **27’-5” 235 290 15’ to 27’ Alum Alum 50.6 3

N or LP *150,000 100,000 50’-9” **27’-5” 235 290 15’ to 27’ Titan Alum 50.6 3

N or LP *175,000 125,000 50’-9” **27’-5” 235 N/A 16’ to 30’ Titan Alum 50.6 3

N or LP *200,000 145,000 50’-9” **27’-5” 235 N/A 17’ to 35’ Titan Alum 50.6 2

HL3-60-150

HL3-60-175

HL3-60-200

HL 3-70-175

HL3-70-200

* Model requires stainless steel tube clamp (P/N: TP-220) to be located at the seam between the primary

combustion chamber and the secondary combustion tube downstream of the burner control box.

** Model requires 5EA-SUB accessory package when installing in a ‘U’ configuration (P/N: TF1B).

IMPORTANT: Reference box label to determine the number of required baffle sections for each model heater.

Titan = Black coated titanium stabilized aluminized steel.
Alum = Black coated aluminized treated steel.

N or LP *150,000 100,000 60’-5” 32’-5” 265 330 16’ to 30’ Titan Alum 60.7 2

N orLP *175,000 125,000 60’-5” 32’-5” 265 N/A 16’ to 30’ Titan Alum 60.7 2

N or LP *200,000 145,000 60’-5” 32’-5” 265 N/A 17’ to 35’ Titan Alum 60.7 2

N or LP *175,000 125,000 70’-1” **37’-3” 300 N/A 19’ to 42’ Titan Alum 70.9 2

N or LP *200,000 145,000 70’-1” **37’-3” 300 N/A 19’ to 42’ Titan Alum 70.9 2

10

HL3 Series

2.0 Installation • Tube Sequence • Heater Length

Tube Installation Sequence

Figure 2.4 • Tube Installation Sequence

Important! The combustion chamber & radiant tube sections must be installed in the following order.

20 Foot

30 Foot

40 Foot

Stainless steel clamp location on 150 - 200 MBH models (P/N : TP-220).

50 Foot

60 Foot

70 Foot

Stainless steel clamp location on 150-20 0 MBH models (P/ N: TP-220).

Stainless steel clamp location on 150-20 0 MBH models (P/ N: TP-220).

Key

Burner Control Box with
16-inch Burner Tube

Black Coated Combustion
Chamber Tube*

Black Coated Aluminized Combustion
Chamber/Radiant Emitter Tube

Standard Tube Clamp

Stainless Steel Tube
Clamp (P/N: TP-220)

150-200 MBH models only - Located
between 1st and 2nd 10 ft. tube sections.

Baffle Location

*Aluminized tubes (50,000 to 125,000 BTU/H models); Titan tubes (150,000 to 200,000 BTU/H models).
NOTE: Refer to the Tube Heater General Manual, Chart 3.6 (page 23) for secured reflector joints.

11

!

3.0 HL3 Series Operation • Sequence of Operation • Thermostat

HL3 Series

3.0 Operation

WARNING

This heater must be installed and serviced by trained gas installation and service
personnel only.

Do not bypass any safety features or the heater’s built in safety mechanisms will be
compromised.

Note: Reference the Tube Heater General Manual for installation requirements.

Sequence of Operation

Standby: The 35-66 control continually checks for internal faults, circuit integrity and relay contact

positioning.

Starting Circuit: Upon a call for heat, the control verifies that the differential switch is in the proper
position (open). The control energizes the fan. Once operational static pressure is achieved, the
differential switch will close initiating the ignition sequence. The glo-bar 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 three
(3) trials for ignition before proceeding to soft lockout.

Single Stage 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 (2)
additional ignition sequences before proceeding to soft lockout. The control can be reset by briefly
interrupting the power source.

Two Stage Running Circuit: The second stage on the gas valve is powered directly from the second
stage of the thermostat. In order for two stage to flow to a higher output, single stage must be energized
as well. The thermostat determines which stage to maintain for the desired temperature.

Shut Down: When the thermostat is satisfied, the fan will enter a two (2) minute post-purge cycle. Refer
to Soft and Hard Lockout under Diagnostics; p. 13.

Thermostat

HL3 Series heaters require a 24VAC, two-stage thermostat to operate. The burner control box is equipped
with a round terminal strip that accepts three (3) 1/4” insulated female spade terminals. Do not supply
120V to the 24V connection.

The HL3 Series is equipped with or without relays (P/N: HLRP). The optional relays must be factory
installed. NOTE: Units with a relay installed must have an external transformer (field supplied), see wiring
diagram. (Figure 2.2B).

Standard Configuration

Without relays (identified with white label around the terminal block):

• Single burner control box.

• Single thermostat.

24V

- 24V HEATER OUTPUT -

HIGH

LOW

24V OUT

Optional Configuration

With relays (identified with orange label around the terminal block):

• A single thermostat controls two or more burner control boxes.

• Heaters are common vented.

• Must be factory installed.
12

HL3 Series

3.0 Operation • Diagnostics

Diagnostics

Lockout:

The controls will automatically lockout the heater system when an external or system fault occurs. There
are two types of lockout:

Soft Lockout: The heater will attempt to light three times. In the event of a failed attempt to light, (gas

pressure, valve, no flame sense etc.), the heater will enter a soft lockout period for 15
minutes and then attempt to light three more times before entering Hard Lockout mode.

Hard Lockout : If proof of flame is not established, a component failure occurs or blockages are evident,

the heater will enter hard lockout. If lockout occurs, the control can be reset by briefly
interrupting the power source. Refer to Chart 3.1 below for a description of LED codes.

Figure 3.1 • Operational Indicator Lights

HOT

NEUTRAL

120V

EARTH

- 120V HEATER INPUT -

HIGH

LOW

24V

NEUTRAL

- 24V HEATER INPUT -

Light 1 (amber)

Indicates Low

Fire Mode

Light 2 (amber)

Indicates High

Fire Mode

Light 3 (green)

Indicates Pressure

Switch Closes

Operational Indicator Lights

Chart 3.1 • LED Fault Code Status (located internally on circuit board)

LED Code Fault Status Fault Code Delay*

Initial flash on power

up, then steady off

No fault,

normal operation

Steady ON Module failure / Internal fault No delay

1 flash Ignition failure 3 minutes

2 flashes

APS (Air Proving Switch)

(Fan / Intake / Exhaust)

3 flashes Lockout 17 minutes

Solenoid valve fault

4 flashes

Leaky valve

Flame amplifier fault

No flash on 117V startup Transformer fault No delay

*Some LED codes have a time delay before the LED will flash.

No delay

0 - 30 seconds

No delay

13

4.0 Troubleshooting Guide

4.0 Troubleshooting Guide

Turn up thermostat.

HL3 Series

Does the fan

blower turn on?

Yes

Find the source of the

electrical problem

between panel and

external transformer.

External transformer

is faulty and must be

replaced.

Is the power at the

No

heater 120V?

Yes

Does the heater have HLRP isolation

relays? (identified with orange

crescent around the terminal plug).

No

Find the source of the electrical problem between panel and heater.

No

Is there 120V on the

primary side of the

external transformer?

No

Is there 24 Volts from the
thermostat?

Yes

Is there 24V

to the

thermostat?

No

Is there 24V on the
secondary side of the
external transformer?

Yes

No

Find source of electrical problem between

the external transformer and thermostat.

Yes

No

Yes

Yes

The thermostat or wiring

is faulty and should be

replaced or repaired.

Troubleshooting with Optional HLRP Isolation Relays

Does the switch

light energize?

Repair the wiring

between the

transformer and

the 24V

terminal plug.

Yes

Does the igniter

warm up and

glow red?

Yes

Continued on page 16

No

Yes

No

Is the green light burnt out?

If so, replace.

Is there 24V

on the second-

ary side of the

transformer?

No

Replace transformer.

Is the igniter

physically

damaged?

No

Yes

Replace igniter.

No

Is the inlet or the outlet

of the unit plugged or

Yes

No

Is there 120V on

the primary side

of the internal

transformer?

No

Check voltage at igniter

sequence (usually 5 to 15

seconds after power to

heater). Is it 120V?

Yes

Is the resistance through

the igniter 50-400Ω?

14

No

obstructed?

No

Is the power

No

Repair the wiring between

power in and transformer.

No No

across the left
terminal of the

24V plug and

ground 24 Volts?

Is the inlet or the outlet

of the unit plugged or

obstructed?

Yes

Remove obstruction.

Yes

HL3 Series

4.0 Troubleshooting Guide

NOTICE

during normal operation or the heater’s built-in safety mechanisms will be compromised.

Without HLRP Isolation Relays:

Bypassing any switch is intended for testing purposes only. Do not leave switch bypassed

Start
Question

Is the power across

the 24V wire on the

circuit board and

ground 24V?

Process
Question

Yes

Is the power across

the t-stat wire on the

circuit board and

ground 24V?

No

The relay board is faulty

and must be replaced.

No

Key

Corrective
Action

Yes

With HLRP Isolation Relays:

Process
Question

Is the circuit

board sending

120V to the

fan?

Yes

Is the fan

obstructed?

No

Is the pressure

switch stuck in the

closed position?

Yes

Replace

switch.

Corrective
Action

Yes

No

Remove

obstruction.

Is there 120V on the

primary side of the

internal transformer?

Yes

No

Repair wiring between

power in and transformer.

Is the power across

the middle (low)

terminal of 24V plug

and ground (screw

on the Burner Control

Box) 24 Volts?

Yes

across the TH and

ground terminals

No

Repair thermostat or wiring from

thermostat to heater.

Check for loose wiring or

restrictions in hose connec-

tions to pressure switch.

Are they OK?

Yes

No

Replace wiring or hose connections.

The internal

transformer is

faulty and must

be replaced.

Is there 24V

on the circuit

board?

Yes

No

Correct wiring.

*A

fter 0-30 seconds of

non-operation has passed,

is there a flash code for

APS failure (2 flashes)?

No

Replace circuit board.

No

The circuit board is

faulty and must be

replaced.

No

No

Is the circuit

board sending

120V to the

Is the pressure switch stuck

in the closed position?

Yes

fan?

Replace the pressure switch after verifying:

• Baffle(s) are in the radiant tube furthest from
the burner.

Yes

• 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).

The fan is faulty and must be replaced.

Yes

Replace

pressure

switch

No

Is the fan

obstructed?

Yes

Remove

obstruction.

* Refer to LED diagnostic Fault Code Chart; p.13.

15

4.0 Troubleshooting Guide

Continued from page 14

HL3 Series

After igniter is

warmed up, does

gas valve open?

Yes

Does The

burner light?

Yes

Does the burner

stay on?

Yes

No

No

No

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

Replace circuit board.

Is the ball valve/

shut-off valve

in the ON position?

Yes

No

Turn on .

Does the burner stay on

for approx. 8 seconds

and then shut off?

Check to make sure gas pressure is within

minimum and maximum inputs, as indicated on

the heater’s rating plate. Is gas pressure OK?

No

Correct problem.

No

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 the heater’s

rating plate. Is gas pressure OK?

Yes

Yes

Yes

Yes

Pressure
switch may
be faulty or

there is a
restriction in
the exhaust.

Does the heater

stay ON until a

call for heat ends?

Yes

Troubleshooting ends.

No

The heater can shut down due to:

• Improper grounding.

• High winds.

• Taking combustion air from the attic.

• Dirty environment.

• Improperly positioned baffles.

• Fluctuating gas pressure.

No

Correct problem.

16

HL3 Series

Check to make sure gas pressure is within minimum and

maximum inputs, as indicated on the heater’s rating plate.

Is gas pressure OK?

No

Correct problem.

Yes

4.0 Troubleshooting Guide

Replace gas valve.

Were the gas lines purged of air?

No

Purge gas line.

Is the heater properly

grounded? Is the heater’s

polarity correct?

Yes

With microampmeter, check DC

No

Correct problem.

If heater does not go into high fire mode:

Sensing rod is faulty or flame is weak.

Check to make sure heater is operating

at proper gas pressure as indicated on the

heater’s rating plate and then, if needed,

Yes

amperage at flame rod. Is it

greater than 1.0 microamps?

No

replace sensing rod.

Yes

Check to make sure flame

sensor wire is OK and then

replace circuit.

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:

Is there 24V across the GROUND and HIGH

(HIGH to COM on heaters with optional

isolation relays) on the terminal strip located

on the outside of the control box?

No

Repair or replace faulty

wiring or thermostat.

Yes

Replace gas valve.

Measure voltage across the red wire

on the VALVE and GROUND (red wire

on RELAY to GROUND on heaters with

isolation relays). Is it 24V?

Yes

Replace relay.

17

No

5.0 Parts • Heater Components and Parts List

5.0 Parts

Figure 5.1 • Burner Assembly Components

3098

3094

85

83

333

84

3002A

331

76

3060

245

3099

212

25

70

3140, 3141

3008A

3252

1325

832

3044

68B

70A

331

332

219

826

851B

3010

204

3096

1018

264D/F, 1264A

3093

31D

3097

3011

3012

3001

222

50

217

10A

206

221

222A

205
3094A

3005A

9

5

3072, 201B

3004

383

321

HL3 Series

21B

3380

14
15

17

16

3003A

142 8

3033C

3014

3216

55A, 3215

828

Chart 5.1 • Parts List

Part # Description Part # Description

TP-5 Flange Gasket TP-70 1/2 in. Control Box Gasket (10.3 inches)

TP-9 Conduit Coupling TP-70A 1 in. Control Box Gasket (6 inches)

TP-10A Conduit 4” x 3/4” TP-76 Rubber Grommet

TP-14 Sight Glass Gasket TP-82 Reflector Center Support (RCS)

TP-15 Sight Glass TP-83 24 in. Stainless Steel Flexible Gas Connector

TP-16 Sight Glass Washer TP-84 1/2 in. Female / Male Flare Fitting

TP-17 Sight Glass Kit TP-85 1/2 in. Male / Male Flare Fitting

TP-19B 4 in. Wire Hanger with Tension Spring TP-105 Aluminum Reflector End Cap

TP-20C 120 in. Aluminum Reflector TP-106 Reflector End Cap Clips (8 pcs.)

TP-20D* 120 in. Stainless Steel Reflector T P -113 Reflector Tension Spring

TP-21B 4 in. Standard Tube Clamp TP-201B V.3 Mid-High Burner (Color Code - TAN)

TP-25 1/4 in. Female Spade Terminal (Qty. 3) TP-204 Gas Orifice (consult factory)

TP-26A 10 ft. Aluminized Radiant / Combustion Tube TP-205 Glo-Bar™ Holder

TP-26B 10 ft. Titanium Coated Combustion Tube TP-206 Glo-Bar™ Holder Spring Clip

TP-26D* 10 ft. 304 Stainless Steel Radiant Tube TP-212 1/2” x 3” Pipe Nipple

TP-26E* 10 ft. 409 Stainless Steel Combustion Tube TP-217 Brass Pressure Switch Barb Fitting

TP-31D Interlocking Mounting Bracket (Qty. 2) TP-219 Differential Vinyl Sensing Tube (burner)

TP-50 Glo-Bar™ Igniter TP-220 Stainless Steel Tube Clamp (150 & 200 MBH)

TP-55A 1/20 hp Inducer Assembly (50-150 MBH) TP-221 Glo-Bar™ Holder Gasket

TP-65I 36 in. Interlocking Turbulator Baffle TP-222 Flame Rod

TP-68B Large Strain Relief Bushing TP-222A Flame Rod Wire

* Optional upgrade or add-on item.

18

HL3 Series

Figure 5.2 • Tube & Reflector Components

5.0 Parts • Heater Components and Parts List

20C/D*

105

106

82

113

19B

105

26A/D*

579

26A/B/E*

21B, 220

65I

Part # Description Part # Description

TP-245 3/16” X 1/8” Plastic Gas Valve 90° Vent TP-3008A Gas Valve Mounting Bracket

TP-264D Differential Pressure Switch, 65 to 75 MBH TP-3 010 Service Panel Hinge

TP-264F Differential Pressure Switch, 150 to 200 MBH TP - 3 011 V.3 Igniter Box

TP-321 Ignition Plate Gasket TP-3012 V.3 Igniter Box Cover

TP-331 Green Self-Tap Ground Screw (Qty. 2) TP-3 014 Plastic Air Orifice with Screen

TP-332 Divider Grommet TP-3033C HL3 Power Entry Plate

TP-333 72 in. Black 120V Power Cord TP-3044 Gas Manifold

TP-383 Glo-Bar™ Igniter Plate TP-3060 V.3 Pressure Switch Mounting Bracket

TP-579 4 in. Wire Hanger w/o Tension Spring TP-3072 Low BTU Burner (Color Code - GREEN)

TP-826 40VA Transformer TP-3093 #8-23 Cage Nut (Qty. 4)

TP-828 24V Yellow Operational Indicator Light (Qty. 2) TP-3094A #8-32 x ½” Zinc Coated Steel Knurled Thumb

TP-832 Thermostat Terminal Strip

TP-851B 35-66 Diagnostic Circuit Board TP-3096 Valve Compartment Bottom Panel

TP-1018 Differential Switch Vinyl Sensing Tube (exhaust) TP-3097 Valve Compartment Top Panel

TP-1264A Differential Pressure Switch, 100 to 125 MBH TP-3098 Valve Compartment Side Panel

TP-1325 Optional HLRP Isolation Relay* (Qty. 2) TP-3099 Controls Mounting Panel

TP-1428 24V Green Operational Indicator Light TP-3140 36G54-224 Gas Valve - Natural Gas Assembly

TP-3001 Divider Panel TP-3141 36G54-226 Gas Valve - LP Gas Assembly

TP-3002A Plastic End Panel, Control Compartment TP-3215 1/15 hp Inducer Assembly (175-200 MBH)

TP-3003A Plastic End Panel, Fan Compartment TP- 3216 Reducer Plate (175-200 MBH)

TP-3004 V.3 Control Box TP-3252 4-Piece Wire Harness Set

TP-3005A Plastic Valve Chamber Lid TP-3380 V.3 16” HSI Burner Tube w/ Flange and Fittings

Screw (Qty. 4)

* Optional upgrade or add-on item.

19

Kit Contents Check List

Kit Contents Check List

Kit Contents - Reference the length column for your model.

HL3 Series Kit Contents

HL3 Series

TP-19B 4” Hanger with

Reflector Tension Spring

TP-83 24” Stainless Steel

Flexible Gas Connector

**TP-83A

Part No. Description 20 ft. 30 ft. 40 ft. 50 ft. 60 ft. 70 ft.

TP-19B 4” Hanger w/ Tension Spring 3 4 5 6 7 8

TP-21B 4” Tube Clamp 2 3 4 5* 6* 7*

TP-25 1/4” Female Spade Terminal 3 3 3 3 3 3

TP-82 4” Reflector Center Support 2 3 4 5 6 7

TP-83 24” S.S. Flexible Gas Connector 1 1 1 1 1 1

TP-10 5 Reflector End Cap 2 2 2 2 2 2

TP-10 6 Reflector End Cap Clips 8 8 8 8 8 8

LIOGT3 V3 General Tube Heater Manual 1 1 1 1 1 1

LIOHL3 HL3 Series Insert Manual 1 1 1 1 1

TP-82 4” Reflector

Center Support (RCS)

**TP-829**TP-19 C

TP-220 4” Tube Clamp

**TP-220

TP-105 Reflector End Cap

**TP-10 5A

LIOGT3 General Manual

Tub e H ea te r

General Manual

TP-106

Reflector

End Cap Clips

LIOHL3 HL3 Series Insert

HL3 Series

Insert Manual

TP-25 1/4”

Female Spade

Terminal

1

Filled By:

* NOTE: One 4” stainless steel tube clamp (P/N: TP-220) is provided for each 150,000 - 200,000 BTU/h model.

Place as shown on page 11.

** Part number for models upgraded with stainless steel options.

Approvals

• CSA.

• Indoor approval.

• Outdoor approval with OD-Kit.

• Commercial approval.

Limited Warranty

• 1 year - Burner box components.

• 5 years - Combustion and radiant tubes.

• 10 years - Stainless steel burner.

• See page 36 of the General Tube Heater Manual
for terms and conditions.

© 2014 Detroit Radiant Products Co.

21400 Hoover Road • Warren, MI 48089
Phone: [phone] Fax: [phone]
www.detroitradiant.com • [e-mail]

Printed in U. S. A.

20