Enerco Erxl 100 Users Manual

ERXL-150 to the manual 639059ec-5151-445e-bfd9-b2b0c7edc113

2015-02-06

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Operating Instructions and Owner’s Manual

enerRADIANT®

HEATSTAR
Model

READ INSTRUCTIONS CAREFULLY: Read and follow all instructions.
Place instructions in a safe place for future reference. Do not allow
anyone who has not read these instructions to assemble, light, adjust or
operate the heater.

ERXL-60
ERXL-80
ERXL-100
ERXL-125
ERXL-150
ERXL-175

ERXL-80S
ERXL-100S
ERXL-125S
ERXL-150L
ERXL-175L

Gas-Fired, Low-Intensity Infrared Heaters
approved for residential Garage/
Commercial Applications

WARNING: Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Refer to this manual. For assistance or
additional information consult a qualified installer, service agency or the gas supplier.
— WHAT TO DO IF YOU SMELL GAS
• Open Windows
• DO NOT try to light any appliance.
• DO NOT use electrical switches.
• DO NOT use any telephone in your house. Immediately call your local gas supplier from a

neighbor’s telephone. Follow the gas supplier’s instructions.
• Do not touch any electrical switch; do not use any phone in your building.
• Installation and service must be performed by a qualified installer, service agency or the gas

supplier.
• If you cannot reach your gas supplier, call the Fire Department.

FOR YOUR SAFETY:
Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or any other appliance.
WARNING: If the information in these instructions are not followed exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
Enerco Group, Inc., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-881-5500

3/08 ?????????

WARNING:

WARNING:
YOUR SAFETY IS IMPORTANT TO YOU AND TO OTHERS,
SO PLEASE READ THESE INSTRUCTIONS BEFORE YOU
OPERATE THIS HEATER.

FIRE, BURN, INHALATION, AND EXPLOSION HAZARD.
KEEP SOLID COMBUSTIBLES, SUCH AS BUILDING
MATERIALS, PAPER OR CARDBOARD, A SAFE DISTANCE
AWAY FROM THE HEATER AS RECOMMENDED BY THE
INSTRUCTIONS NEVER USE THE HEATER IN SPACES
WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE
COMBUSTIBLES, OR PRODUCTS SUCH AS GASOLINE,
SOLVENTS, PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS.

L’AVERTISSEMENT:
Votre surete est importante a vous et donc s’il vous
plait lire ces instructions avant d’operer cet appareil de
chauffage.

GENERAL HAZARD WARNING:
FAILURE TO COMPLY WITH THE PRECAUTIONS AND
INSTRUCTIONS PROVIDED WITH THIS HEATER, CAN
RESULT IN DEATH, SERIOUS BODILY INJURY AND
PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE,
EXPLOSION, BURN, ASPHYXIATION, CARBON MONOXIDE POISONING, AND/OR ELECTRICAL SHOCK.
ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW
THE INSTRUCTIONS SHOULD USE OR SERVICE THIS
HEATER.
IF YOU NEED ASSISTANCE OR HEATER INFORMATION
SUCH AS AN INSTRUCTIONS MANUAL, LABELS, ETC.
CONTACT THE MANUFACTURER.

L’AVERTISSEMENT:
Le feu, les brulures, le danger d’inhalation et explosion
garder combustibles solide tel que les materiels de
papier ou le carton.
Une distance sure eloigne de l’appareil chauffage
comme recommande.
Par les instructions, ne utiliser l’appareil de chauffage dans les espaces qui forme contenir combustibles
volatiil ou aeroporte, ou les produit qu’essence, les dissolvants, peindre plus mines, les particles de poussiere
ou les produits chimiques inconnus

L’AVERTISSEMENT GENERAL DE DANGER:

WARNING:

L’Echec pour se conformer aux precautions et aux instructions a fourni avec cet appareil de chauffage, avoir
pour resultat la mort blessure et la perte de propriete
ou les dommages physiques serieuses du danger de feu,
l’explosion, la brulure l’asphyxie, monoxide de carbone
empoisonant, et/ou le choc electrique.
Seulement les personnes qui peuvent comprendre et
peut suibre les instructions doivent utiliser ou doivent
entretenir cet appareil de chauffage.
Si vous avez besoin de l’information d’assistance ou appareil de chauffage telle qu’un manuel d’instruction, les
etiquettes,etc, contactez le fabricant

The State of California requires the following warning:

COMBUSTION BY-PRODUCTS PRODUCED WHEN USING THIS PRODUCT CONTAIN CARBON MONOXIDE, A
CHEMICAL KNOWN TO THE STATE OF CALIFORNIA TO
CAUSE CANCER AND BIRTH DEFECTS (OR OTHER REPRODUCTIVE HARM).

L’AVERTISSEMENT:

L’etat de Californie exige les avertissement siuvants.
Derives de combustion ont produit en utilisant ce produit
contient monoxide de carbone, un chimique/gaz connu
dans l’etat de californie pour causer les defauts de cancer
et naissance (ou autre le mal reproducteur)

CONTENTS
Section 1 INTRODUCTION............................................................... 3
Section 2 PLANNING ..................................................................... 3
Section 3 INSTALLATION & ASSEMBLY...........................................12
Section 4 VENTING/DUCTING....................................................... 16
Section 5 GAS PIPING................................................................... 19
Section 6 WIRING......................................................................... 20
Section 7 OPERATION MAINTENANCE.......................................... 21
Section 8 TROUBLESHOOTING...................................................... 23
Section 9 REPLACEMENT PARTS.................................................... 24
Section 10 Engineering Specifications.................................... 25
Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

SECTION 1

SECTION 2

Introduction

Planning

Ener-Radiant ERXL models are low-cost, field assembled
infrared heaters that are easy to install and require only minimal
maintenance. They are designed to provide years of economical
operation and trouble-free service.

The following codes and instructions should be followed when
planning the installation of the Ener-Radiant ERXL heater. In addition
to these instructions, the warnings in (Section 1) must be carefully
adhered to since improper installation may lead to property damage,
injury, or death.

Checking Shipment

National Standards and Applicable
Codes

Check the shipment against the Bill of Lading for shortages. Also,
check for external damage to cartons. Note any shortages, and/
or external damage to cartons on the Bill of Lading in the presence
of the delivery trucker. The delivery trucker should acknowledge
any shortages or damage by initializing this “noted” Bill of Lading.
Immediately report any claims for damaged material, or shortages
that were not evident at the time of shipment, to the carrier and
your ENERCO Factory Representative.

Installer Responsibility

Gas Codes: The type of gas appearing on the nameplate
must be the type of gas used. Installation must
comply with local codes and recommendations
of the local gas company, and the National
Fuel Gas Code, ANSI Z223.1 – latest revision,
(same as NFPA Bulletin 54).

• Clearance between the heater and its vent
and adjacent combustible material (which
is part of the building or its contents) shall
be maintained to conform with the Standard for Installation of Gas Appliances
and Gas Piping, NFPA-54 / ANSI Z223.1 –
latest revision, National Fuel Gas Code.

All heaters and associated gas piping should be installed in
accordance with applicable specifications and this installation made
only by firms (or individuals) well qualified in this type of work.
Consult local building inspectors, Fire Marshals or your local ENERCO
Factory Representative for guidance.
Ener-Radiant ERXL heaters are installed on the basis of information
given in a layout drawing, which together with the cited codes and
regulations, comprise the basic information needed to complete the
installation. The installer must furnish all needed material that is not
furnished as standard equipment, and it is his responsibility to see
that such materials, as well as the installation methods he uses result
in a job that is workmanlike and in compliance with all applicable
codes.

Aircraft Hangers: Installation in aircraft hangers must be in
accordance with the Standard for Aircraft
Hangers, ANSI / NFPA-409 – latest revision.

• Heaters in aircraft storage or service
areas shall be installed at a height of 10
feet above the upper surface of wings or
engine enclosures of the highest aircraft
which may be housed in the hanger. (This
should be measured from the bottom of
the heater to the wing or engine enclosure, whichever is highest from the floor.)

ENERCO Factory Representatives have had training and experience
in the application of this equipment and can be called on for
suggestions about installation which can save material and money.

• In other sections of aircraft hangers, such
as shops or offices, heaters must not be
installed less than 8 feet above the floor.
• Heaters installed in aircraft hangers shall
be located so as not to be subject to damage by aircraft, cranes, moveable scaffolding or other objects.
Public Garages: Installations in garages must be made in
accordance with the Standard for Parking
Structures, NFPA-88A – latest revision or the
Standard for Repair Garages, NFPA-88B –
latest revision.

• Heaters must not be installed less than 8
feet above the floor. Minimum clearances
to combustibles must be maintained from
vehicles parked below the heater.
Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

• When installed over hoists, minimum
clearances to combustibles must be maintained from the uppermost point on the
hoist.

• Be sure the heater has a downward pitch
of one-half inch per 20 feet away from the
burner.
• Provide signs in storage areas to specify
maximum stacking height to maintain
required clearances to combustibles.

Electrical: The heater must be electrically grounded in
accordance with the National Electrical Code,
ANSI / NFPA-70 – latest revision. Wiring must
conform to the most current National Electrical
Code, local ordinances, and any special
diagrams furnished.

• Plan location supports (see Figure ?).
Locate a support near all elbows.

Installation Procedure

Venting: The venting must be installed in accordance
with NFPA-54 / ANSI Z223.1 – latest revision,
National Fuel Gas Code. Partial information
with regard to this code is provided in
(Section 5) of this installation manual with
regard to size and configurations for venting
arrangements.

Take maximum advantage of the building
upper structure, beams, joists, purlins, etc.,
from which to suspend the heater. There is no
unique sequence for installation of the tubing.
On-site observation will usually reveal a logical
sequence. Begin the installation at the most
critical dimension. This could save time. Watch
for swinging doors, overhead cranes, car lifts,
etc. Reflectors and tubing can be installed as
you move along. Carefully adjust system pitch
at each position to level the heater. Pitch down
one-half inch in 20 feet (away from burner).

• Any portion of flue pipe passing through
a combustible wall must be dual insulated
or have an approved thimble. Refer to
ANSI-Z223.1 – latest revision.

Hazardous
Locations: Where there is the possibility of exposure to
combustible airborne material or vapor, consult
the local Fire Marshal, the fire insurance
carrier or other authorities for approval of the
proposed installation.

Critical Considerations
Ener-Radiant ERXL is a suspended heater.
Therefore, its stability, flexibility, and safety are
very important. Before starting installation,
be sure the system can meet the following
requirements.

Don’t Pressure test the gas line using high pressure
(greater than ½ PSIG) without closing the
high-pressure shutoff cocks. Failure to do so
will result in damage to the burners.

DO Familiarize yourself with local and national
codes.

Develop a planned procedure which will
conserve material and labor on the job.
Check to see that all material and equipment is
on the job before starting installation.
Allow for thermal expansion of the hot tube.

• Maintain specified clearances to combustibles, and safe distance from the heatsensitive material, equipment and work
stations.

Install the gas connector only as shown in
instructions (see Figure 17).
Have slip joints where required between
reflectors to keep them from buckling or
coming apart.

• Provide a suspension with vertical length
of chain or swinging rod which has at
least 2 inches of horizontal travel for
each burner in a straight run. Be sure the
suspension system is sufficiently flexible to
accommodate thermal expansion which
occurs as the system heats up (see
Figure 5 on page 15).

Provide 1 sq. inch of free air opening to each
1,000 BTU/hr. of heater input (but not less
than 100 sq. inches) in enclosed spaces. One
opening should be within 12 inches of the top
and one within 12 inches of the bottom of the
enclosure.

• Provide access to burners for servicing,
preferable on both sides, above and behind the burner for removal.
• Provide a minimum of 18 inches of clearance between burners and building walls.
(Always observe minimum clearances to
combustibles.)

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

ACCESSORY PARTS LIST
Stock Number
Description
10371.................................... Thermostat 24 volt
10392.................................... Thermostat 120 volt
17370.................................... Chain Kit
03445................................... Turbulator 10’ Section
03447................................... Turbulator 5’ Section
16401....................................24” Stainless Steel Flexible

Gas Connector
18677A................................. Installation Manual
F106414................................ 180° U-Tube Accessory Kit
F106415................................ 90° Elbow Accessory Kit
19021.................................... Vent Adaptor
06430................................... Vent Cap
F111751

Installation kit for 20’ tube heater

F111752

Installation kit for 30’ tube heater

F111753

Installation kit for 40’ tube heater

F111754

Installation kit for 50’ tube heater

F111755

Installation kit for 60’ tube heater

Installation kit includes 24-volt thermostat, vent cap, 24” stainless
steel flexible gas connector, gas shutoff valve, and chair kits required
to hang heater.

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

Clearances To Combustibles
TABLE 1: Minimum Clearances to Combustibles (Use Figure 1 on page 10 as a Guide)
Reflector Type Position

ERXL-60

ERXL-80

ERXL-100

ERXL-125

ERXL-150

ERXL-175

Standard Reflector

6”

8”

(Horizontal)

30”

36”

55”

74”

87”

30”

36”

45° Reflector Tilt

12”

18”

30”

36”

55”

74”

87”

36”

60”

U-Tube Standard

6”

8”

(Horizontal)

30”

36”

55”

74”

87”

30”

36”

U-Tube Opposite 45°

12”

18”

30”

36”

55”

74”

87”

60”

U-Tube Full 45°

12”

18”

30”

36”

55”

74”

87”

36”

60”

Unvented

Above A

36”

Warning:
Fire or explosion hazard
Can cause property damage, severe injury or
death.
In all situations, clearances to combustibles must be maintained.
Failure to observe clearances to combustibles may result in
property damage, severe injury, or death.
Minimum clearances must be maintained from vehicles parked
below the heater. Signs should be posted in storage areas to
specify maximum stacking height to maintain required clearances
to combustibles.
Caution should be used when running the system near
combustible materials such as wood, paper, rubber, etc.
Consideration should be given to partitions, storage racks, hoists,
building construction, etc.
TABLE 1 gives minimum acceptable clearances to combustibles.
Clearances as shown in TABLE 1 are not for use in four-sided
enclosures.

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

Clearances To Combustibles
Figure 1:

Clearances To Combustibles (Refer to TABLE 1 on page 9)
A
A

C
C

D
E

Standard Reflector

F
45° Reflector Tilt

D
“U”-Tube, Standard

A
F

“U”-Tube, Opposite 45°
E

“U”-Tube, Full 45°

B
Front and Back Clearance

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

Parts List for Packaged Ener-Radiant XL Tube Heaters
Item

Stock#

Description

Number Required

F107400XL

ERXL-60 NG COMP / 20’

F107401XL

ERXL-60 LP COMP / 20’

F107402XL

ERXL-80 NG COMP / 30’

F107403XL

ERXL-80 LP COMP / 30’

F107412XL

ERXL-80S, NG COMP / 20’

F107413XL

ERXL-80S, LP COMP / 20’

F107414XL

ERXL-100S, NG COMP / 30’

F107415XL

ERXL-100S, LP COMP / 30’

F102650XL

ERXL-60 NG / BRN & Cont Box

F102651XL

ERXL-60 LP / BRN & Cont Box

F102652XL

ERXL-80S, ER3-80 LP / BRN & Cont Box

F102653XL

ERXL-80S, ER3-80 LP / BRN & Cont Box

F102654XL

ERXL-100S / BRN & Cont Box / NG

F102655XL

ERXL-100S / BRN & Cont Box / LP

F106401XL

ERXL-100S / TUBE SYS ONLY / 30’

F106404XL

ERXL-60, 80S / TUBE SYS ONLY / 30’

F106405XL

ERXL-80 / TUBE SYS ONLY / 30’

00418A

REFLECTOR / T.H.

03445

TURBULATOR BAFFLE 10’

03447

TURBULATOR BAFFLE 5’

06413

TUBE H.E. 4” O.D. X 10’

14585

HANGER / TUBE & REFLECTOR

02753

FRONT CASING

14312

TUBE COUPLING ASSEMBLY

X
X
X
X
X
X
X
X
1
1
1

1
1

*Items 15, 16, 17 include the following items: 18, 19, 20, 21, 22, 24.

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

19
21

21
23
Figure “A” - Assembly
Model ERXL-60, ERXL-80S

24
21
24
21

21
23
Figure “B” - Assembly
Model ERXL-80

20
21
24
21

21
23
Figure “C” - Assembly
Model ERXL-100s

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

Parts List for Packaged Ener-Radiant XL Tube Heaters
Item

Stock#

Description

Number Required

F107404XL

ERXL-100 NG COMP / 40’

F107405XL

ERXL-100 LP COMP /40’

F107406XL

ERXL-125 NG COMP / 50’

F107407XL

ERXL-125 LP COMP / 50’

F107408XL

ERXL-150, NG COMP / 50’

F107409XL

ERXL-150, LP COMP / 50’

F107420XL

ERXL-175, NG COMP / 50’

F107421XL

ERXL-175, LP COMP / 50’

F107416XL

ERXL-125S, LP COMP / 40’

F107417XL

ERXL-125S, LP COMP / 40’

F107418XL

ERXL-150L, LP COMP / 60’

F107419XL

ERXL-150L, LP COMP / 60’

F107422XL

ERXL-175L, LP COMP / 60’

F107423XL

ERXL-175L, LP COMP / 60’

F102654XL

ERXL-100 NG / BRN & Cont Box

F102655XL

ERXL-100 LP / BRN & Cont Box

F102656XL

ERXL-125S, ERXL-125 NG / BRN & Cont Box

F102657XL

ERXL-125S, ERXL-125 LP / BRN & Cont Box

F102658XL

ERXL-150L, ERXL-150 NG / BRN & Cont Box

F102659XL

ERXL-150L, ERXL-125 LP / BRN & Cont Box

F102660XL

ERXL-175L, ERXL-175 NG / BRN & Cont Box

F102661XL

ERXL-175L, ERXL-175 LP / BRN & Cont Box

F106403

ERXL-150L / TUBE SYS / 60’

F106406

ERXL-100, ERXL-125S / TUBE SYS / 40’

F106407

ERXL-125, ERXL-150 / TUBE SYS / 50'

00418A

REFLECTOR / T.H.

06413

TUBE H.E. 4” O.D. X 10’

06423

X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
1
1

1
1

TRANSITION TUDE ASSEMBLY

14585

HANGER / TUBE & REFLECTOR

14587

TUBE SUPPORT - 5'

14612

TUBE COUPLING ASSEMBLY

*Items 23, 24,25 include the following items: 26, 27, 28, 29, 30.

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

28
26

Figure “D” - Assembly
Model ERXL-100, ERXL-125S

Figure “E” - Assembly

Model ERXL-125, ERXL-150,
ERXL-175

27
26

28 27
26

27
30
27

Figure “F” - Assembly
Model ERXL-150L, 175L

Enerco | enerRadiant® XL Series Heater

21
29

Operating Instructions and Owner’s Manual

20
22

SECTION 3
Installation & Assembly
FIGURE 2: Ener-Radiant XL Overview Key
Burner Housing
Must always be
installed horizontally.

Tube and Reflector Hanger
Install immediately after first
coupling.

Reflectors
Alternate overlap as shown
on overview. Length of
reflector and amount of
overlap is indicated.

10' 2=1/2"

Tube and Reflector Hanger
Suspend system from these hangers.
Minimum two (2) required per tube.

Heat Exchange Tubes
Supplied in 10 ft. lengths.

ALUMINIZED

Tube Coupling Assembly
Coupling should be oriented with slide
bar on top, and all couplings should
“point” in the same direction.

Turbulator Assembly
Enerco normally ships Ener-Radiant heaters with
turbulators assembled into appropriate tubes.

Vent Adapter
Used to attach the heat exchanger
tubing to vent pipe.

Where Field Changes Occur
Turbulator Sections and Adapter are available in
sections and must be assembled before installation
(See Figure 7 for details). The number of sections
required is indicated.

Suspensions Point
Use S-Hooks (See Figure 5) for suspension
details.

Figure 2a: Ener-Radiant XL Model ERXL-60, ERXL-80S, Assembly Overview
20 ft. Exchanger length. 21 ft. - 4 in. Total Heater length. 4 Suspensin points indicated.
HANGER

HANGER

18”

HANGER

18”

18”
2-1/2” OVERLAY TYP
10’ 2-1/2”

10’ 2-1/2”
ALUMINIZED
ALUMINIZED

(4) Turbulator Sections
(1) Turbulator Adapter

FIGURE 2b: Ener-Radiant XL Model ERXL-80, Assembly Overview
30 ft. Exchanger length. 31 ft. - 4 in. Total Heater length. 6 Suspension points as indicated

18”

10’ 2-1/2”

ALUMINIZED

10’ 2-1/2”

18”

18”
10’ 2-1/2”

ALUMINIZED
(4) Turbulator Sections
(1) Turbulator Adapter

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

FIGURE 2c: Ener-Radiant XL Model ERXL-100S Assembly Overview
30 ft. Exchanger length. 31 ft. - 4 in. Total Heater length. 6 Suspension points as indicated.

18”
Typ.

HANGER

18”

HANGER

10’ 2-1/2”

ALUMINIZED

HANGER
18”
18”

HANGER
18”

10’ 2-1/2”

ALUMINIZED
(2) Turbulator Sections
(1) Turbulator Adapter

FIGURE 2d: Ener-Radiant XL Model ERXL-100, ERXL-125S
40 ft. Exchanger length. 41 ft. - 4 in. Total Heater length. 8 Suspension points as indicated.

18”
Typ.

ALUMINIZED

FIGURE 2e: Ener-Radiant XL Model ERXL-125, ERXL-150, ERXL-175
50 ft. Exchanger length. 51 ft. - 4 in. Total Heater length. 10 Suspension points as indicated.

18”
Typ.

ALUMINIZED

FIGURE 2f: Ener-Radiant XL Model ERXL-150L, ERXL-175L
60 ft. Exchanger length. 61 ft. - 4 in. Total Heater length. 12 Suspension points as indicated.
18”
Typ.

ALUMINIZED

Enerco | enerRadiant® XL Series Heater

ALUMINIZED

Operating Instructions and Owner’s Manual

3) Attach the wire to the hole in the tab on the
adapter piece.

Assemble the heater components as shown
in Figures 2a, 2b, 2c, 2d, 2e, and 2f. Optional
reflector configurations are shown in (Figure
1). Install appropriated suspension hardware,
beam clamps, chain or rod at predetermined
locations. Adjustment of chain length will
provide uniform pitch.

4) Using the wire, pull the assembled turbulator into
the tube from the opposite side.
5) Pull the turbulator through until just the tab comes
out. Detach the wire.

Couplings: Tube and tube fittings are connected by
wrap-around couplings which clamp by means
of a tapered, hammer-driven lock member.
The starting ends of the coupling and lock
member are identified by 1/4” holes which
are put together when starting assembly. Be
sure the tube ends are in line and tube ends
butt against stop pin(s) inside coupling. The
slide bar is to be hammer-driven to a point
of securing the coupling snugly to the tubes.
Over-driving will result in distortion of the
coupling or slide bar lip to a point decreasing
the holding the capability of the coupling.
Coupling should be tight when the slide bar is
+- 2” from the end of the coupling.
(See Figure 3)

6) Bend the tab around the tubing. When installing
the tube, the tab will be locked in place by the
adapter.
FIGURE 4: Installation of Elbow & Coupling (optional equipment)

Elbow Package:

Stk. # F106415 Elbow Package includes:
(1) elbow, (1) coupling and (1) refelctor.
Install elbow into radiant tube sequence
where plans indicate a 90° bend
(see Figure 4).

FIGURE 3: Coupling Assembly

Orient coupling so that
the impact block is above
tube centerline.
Loosen

Elbow Fitting Dimensions

90° Elbow

Tighten

Tube

Hole 1
Hole 2

Stk. # F106414 U-Tube Package includes:
Impact
Block

(1) U-tube, (1) coupling and (2)
reflectors. Install U-tube elbow into
radiant tube sequence where plans
indicate a 180° bend
(see Figure 4).

Coupling
Assembly

When assembling coupling note
the location of Hole 1 and Hole 2
Plain Coupling - 14612

TURBULATOR BAFFLE ASSEMBLY
INSTRUCTIONS
For ease of field installation, the turbulator should be installed in the
tube before hanging the system.
Use the following procedure:

1) Assemble turbulator pieces by “twisting”
matching ends together.
2) Insert a long wire (11 ft. minimum) down the
length of the tube.

Enerco | enerRadiant® XL Series Heater

U-Tube Fitting Dimensions
Operating Instructions and Owner’s Manual

180° U-Tube

FIGURE 5: Typical Suspension Details

Screw Hook
min. 3/8" (10 mm)

Beam Clamp

Washer

I-Beam

FIGURE 8: Burner Box / Transition Tube Detail

Bar Joist Clip

Concrete Beam

Truss

Locknut

Burner Box
(flame observation
window facing down)

Anchor

Washer
Wood Beam
Mounting Flange

As Req'd

Gasket
Stk. #12397

S-Hook

Split Lock Washer
Stk. #98527

Chain kit - Stk. #17370
Cap Screw
Stk. 398012

One chain kit will suspend one 10 ft. section of tube and one 10 ft.
section of reflector.
FIGURE 6: Tube and Reflector Hanger
angle mounting ring
radiant tube
horizontal mounting ring
hanger
reflector
top

side

45° reflector position (optional)

below
horizontal reflector position (standard)

FIGURE 7: Mounting Flange / Tube Detail

1) Insert tube 06413 into front casting to point (A).
2) Tighter set screws marked (B) until snug.
3) After both set screws are snug, turn each
additional 1/4 turn to secure tube in place.
Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

Section 4

recommended with unvented heaters due to
pressure considerations.
Horizontal Venting

Venting / Ducting

a) In combustible or noncombustible walls,
use Tjerblund VH1-4” (Stk. #19022). Follow
vent manufacturer’s instructions for proper
installation. (Alternative vent Enerco Stk.
#19023).

b) Four (4”) inch O.D. flue pipe is required. Thirty
(30’) feet maximum length is recommended.
Up to forty-five (45’) feet maximum may
be used if insulated to prevent excess
condensation. (See General Requirements on
page 21 for additional information).

c) All flue joints should be sealed using suitable
product such as General Electric RTV106 or
Permatex Form-A-Gasket Red High Temperature
Silicone Adhesive Sealant.

d) Vent terminal should be installed at a height
sufficient to prevent blockage by snow.

e) Building materials should be protected from
degradation by flue gases.

General Requirements
Heater must be vented in accordance with specification ANSI Z223.1
- latest revisions. Partial information relating to this specification is
provided in this section with regard to size and configurations for
venting arrangements (see Figures 12, 13, 14, 15, 16). For complete
information consult ANSI Z223.1 - latest revision and applicable local
codes. Use the following guidelines to help insure an adequate, safe
venting arrangement.

a) Be sure that method selected for venting
heater complies with all codes as required for
each particular location.

b) Exhaust end of heater will accept a four (4”)
inch flue pipe using the flue pipe adapter.

c) Heater may be vented to the outdoors either
vertically or horizontally.

d) If heater is to be vented horizontally:

1) Vent must exit building not less than seven (7’)
feet above grade when located adjacent to public
walkways.

2) Vent must terminate at least three (3’) feet above
any forced air inlet located within ten feet (10’).

Vertical Venting a) Four (4”) inch O.D. flue pipe, maximum
forty-five (45’) feet in length may be used as
shown with approved vent cap. (See General
Requirements on page 21 for additional
information.)

3)Vent must terminate at least four (4’) feet below,
four (4’) feet horizontally from, or one (1’) foot
above any door, window, or gravity inlet into any
building.

b) An insulated thimble may be required to pass
through combustible structures (check local
codes).
c) All flue joints should be sealed using suitable
products (see recommendation for horizontal
venting.)

4) Vent terminal shall be located at least twelve (12”)
inches from any opening through which vent gases
could enter the building.

e) Vent terminal must be beyond any combustible
overhang.

Draft Hood Venting

f) If condensation in the flue is a problem, the
flue length should be shortened or insulated.

g) For vent specifications all of the following
conditions must be met.

1) Maximum total vent length allowed in forty-five
(45’) feet.

2) Maximum outside air supply duct allowed forty-five
(45’) feet.

3) Maximum total vent length plus outside air supply
length plus extension package shall not exceed sixty
-five (65’) feet.

4) Under length conditions 1) through 3) above — a
total of two (2) elbows are allowed for vent and
outside air supply together. Subtract fifteen (15’)
feet per additional elbow from maximum length
allowed if more than two (2) elbows are used.

a) Refer to ANSI Z223.1 - latest revision, NFA-54
for heights and vent sizes recommended
for proper venting. (Check local codes for
additional information.)

b) Minimum six (6”) inch O.D. vent is
recommended.

Common Venting

a) Horizontal run to vent must never exceed 75%
of the vertical height of the vent. Refer to ANSI
Z223.1 - latest revision, NFA-54 for proper vent
sizes and installation.

b) Open area of common vent must equal the
sum of the open area of individual vents
connected to it. (See chart and diagrams page 25.)

c) Use double wall vent as required (check
codes.)

d) Heaters sharing a common vent must be
controlled by the same thermostat.

e) All joints must be sealed using suitable
products (see recommendation for horizontal
vent - page 24.)

f) Connections to common stack must be
positioned to avoid direct opposition between

Alternative Arrangements / Optional Equipment for Venting
Unvented Operation

a) Sufficient ventilation must be provided in the
amount of 4 CFM per 1,000 BTU/hr. firing rate.

b) Refer to ANSI Z223.1 - latest revision, NFPA-54
and local codes for additional information.

c) Use of optional outside combustion air is not
Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

FIGURE 13b: Double Wall

streams of combustion gases.
Outside Air Supply

Double wall vent run and

Double wall terminal end

a) See procedure and diagram on page ??.

FIGURE 12: Unvented Operation

A
36”

36”

1) Ventilation equal to 4 CFM per 1,000 BTU/hr. firing
rate must be provided in unvented heater installations.

FIGURE 14: Vertical Venting

2) For dimensions A “unvented” refer to (Figure 1 —
Minimum Clearances to Combustibles.)

FIGURE 13a: Single Wall
Single wall vent run
Single wall terminal end

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

FIGURE 15: Common Roof Venting

Approved Vent Cap
Type "B" Vent required outdoors.
H

side view

Roof

Secure all joints with 3 (minimum) #8 x 3/8"
sheet metal screws and seal all joints.
Vent Adapter Stk. #19021

plan view

At least 1/4" per foot rise or pitch
must be maintained on horizontal
runs from heater to vent.

COMMON VENTING - (2) Heaters

COMMON VENTING - (4) Heaters

Model #

H = 6 ft.

H = 8 ft.

H = 15 ft.

Model #

H = 6 ft.

H = 8 ft.

H = 15 ft.

ERXL-60

D = 7”

D = 6”

ERXL-60

D = 10”

D = 8”

ERXL-80

D = 8”

D = 7”

D = 6”

ERXL-80

D = 10”

ERXL-100

D = 8”

D = 7”

ERXL-100

N/A

D = 12”

D = 10”

ERXL-125

D = 10”

D = 8”

ERXL-125

N/A

D = 12”

D = 10”

ERXL-150

D = 10”

D = 8”

ERXL-150

N/A

D = 12”

ERXL-175

D = 10”

D = 8”

ERXL-175

N/A

D = 12”

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

Section 6

Outside Combustion Air Supply
The Ener-Radiant XL heater is approved for installation with an
outside air supply system. Some compounds such as halogenated
hydrocarbons or other corrosive chemicals in the air can be drawn
into the equipment and cause an accelerated rate of corrosion
of some of the heater components. The use of such chemical
compounds near the enclosure should be avoided.

Gas Piping
Read applicable warnings in (Section 1) before proceeding with
Gas Pipe installation. Improper installation may result in property
damage, severe injury, or death.

IMPORTANT: If the building has a slight negative pressure or
contaminants are present in the air, an outside combustion air supply
to the heaters is strongly recommended.

Meter and service must be large enough to handle all the burners
being installed plus any other connected load. The gas line which
feed the system must be large enough to supply the required gas
with a maximum pressure drop of 1/2” water column. When gas
piping is not included in the layout drawing, the local gas supplier
will usually help in planning the gas piping.

For an outside air supply, a four (4”) inch O.D. single wall pipe may
be attached to the heater. The duct may be up to forty-five (45’) ft.
maximum length or two (2’) ft. minimum length with no more than
two (2) elbows. (See General Requirements in page 21 for additional
information.) An outside air supply should not be used with the draft
hood venting configuration.

A 1/2” tapping at each burner location must be located and oriented
as shown in (Figure 17). To check system pressure, put a plugged
1/8” NPT tapping in the gas line at the connection to the burner
farthest from the supply. Before connecting the burners to the
supply system, verify that all high pressure testing of the gas piping
has been completed. Do not high pressure test the gas piping with
the burners connected.

The air supply duct may have to be insulated to prevent
condensation on the outer surface. The outside air terminal should
be securely fastened to the outside wall by drilling four (4) 1/4”
diameter holes in the outside flange; wood screws or bolts and
expansion sleeves may be used to fasten terminal.

Follow these instructions to ensure a professional gas supply
installation:

FIGURE 16: Non-Pressurized Outside Air Supply Duct

•

Support all gas piping with suitable pipe hanging
materials.

•

Use wrought iron or wrought steel pipe and malleable
iron fitting. All pipe fittings should be new and free
from defects. Carefully ream the pipe and tubing ends
to remove obstructions and burrs.

•

Use L.P. gas-resistant joint compound on all pipe
threads.

•

Check the pipe and tubing ends for leaks before
placing heating equipment into service. When
checking for gas leaks, use soap and water solution:
NEVER USE AND OPEN FLAME.

Install the flex gas connector as shown. The flex gas connector
accommodates expansion of the heating system and allows for easy
installation and service of the burner.
FIGURE 17: Gas Line Connection with Stainless Steel Flex Gas
Connector

Outside Air Terminal: Use ACME #104 Enerco Stk. #19030.
Shut – off Valve

PVC Pipe, “Dryer Hose”, or equivalent may be used instead of
standard vent pipe.

Shut-Off Valve must be parallel
to burner gas inlet. The 2”
displacement shown is for the cold
condition. This displacement may
reduce when the system is fired.

12"

0°
1/2" Stainless Steel Flex Gas Connector
Stk. #16401

45°

90°

Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

45°

Section 6

FIGURE 20: Ener-Radiant XL Burner Internal Wiring
Gas Valve
Transformer

Blue

Green

THERMOSTAT

Yellow

Green

Supply Circuit
120v – 60 Hz

Black

White
Black
Terminal
Bushing
Air Switch

Motor / Blower

White
120v – 60 Hz

Black

White

Black

Black
White

Purple

Black

VAC

Burners
(Maximum – 2 per Thermostat)
Burners
(Maximum – 2 per Thermostat)

Orange

24V

120

FIGURE 18a: Line Voltage Thermostat Wiring

Black

White

120V

White

Heaters are normally controlled by thermostats. Line voltage
thermostats are wired directly (see Figure 18a), the recommended
24V thermostats use a relay (see Figure 18b). Heaters must be
grounded in accordance with the National Electric Code ANSI/NFPA 70 - latest version. Heaters may also be controlled with a manual line
voltage switch or timer switch in place of the thermostat.

Yellow

Wiring

Door Switch

Sensor

Green

Ignitor

Green

Supply Circuit

•

If any of the original wire as supplied with the
appliance must be replaced, it must be replace with
wiring material having a temperature rating of at least
105°C and 600 volts.

•

Each burner must be electrically grounded in
accordance with the National Electric Code ANSI/NFPA
- 70 - latest version.

FIGURE 18b: Low Line Voltage Thermostat Wiring
Burners
(Maximum – 1 per Thermostat)

Black

Burners
H
(Maximum – 1 per Thermostat)

White Black

120v – 60 Hz

Green White

Supply Circuit
120v – 60 Hz

Green

Supply Circuit

FIGURE 21: Ener-Radiant XL Burner Internal Wiring Ladder
Diagram

FIGURE 19: Wiring of Low Voltage Thermostat and Relay
When using 1-2 burners, use SPDT Transformer Relay / Stk. # 00172

L2
(NEUTRAL)

When using 3-4 burners, use DPDT Transformer Relay / Stk. # 00183
Wires marked with an asterisk (*) are for use only with DPDT
Transformer Relay.

L2 (HOT)

120V

White

Transformer Relay

Orange

Black
Blue

24V
Transfomer

Low Voltage Thermostat
Stk. #10368

Thermostat

Gas Valve

Air Switch

White
Yellow

Yellow
Purple

White

Black

Door Switch

Black

White

Motor / Blower
White

Black

ite

Black
Red/Yellow*
Red
White
White
N

Burner 3

Burner 1

Burner 4

Burner 2

Enerco | enerRadiant® XL Series Heater

White
Gray

White

Gree

120V – 60Hz
Supply Circuit

3
2 6

Purple*

Operating Instructions and Owner’s Manual

Ignitor

Sensor

Section 7

7. Check the flue pipe for soot or dirt. After cleaning as
necessary, re-attach the flue pipe to the heater.

Operation & Maintenance

8. Outside surfaces of heater may be cleaned by wiping
with a damp cloth.

Sequence of Operation

9. A qualified service agency should be contacted for
service other than routine maintenance.

1. Turn the thermostat up. When the thermostat calls for
heat, blower motor will energize.

10. Check vent terminal and fresh air inlet to see that they
have not been blocked during the non-heating season.
If either pipe is restricted, the air switch won’t close,
resulting in a no-heat situation.

2. When the motor approaches nominal running RPM,
the air proving switch closes and activates the ignition
module.

Troubleshooting

3. The ignition module then energizes the hot surface
igniter for a timed warm-up period (approximately 45
to 60 seconds.)

CAUTION: Before opening the Ener-Radiant XL
burner door for any type of service, be sure
the gas supply has been shut off at the heater
and the electrical cord from the burner box has
been unplugged.

Blower Motor 1. Is the thermostat calling for heat? Is there

Fails to Run: 115V at the burner receptacle?

4. After the warm-up period, the gas valve is energized.
5. During the last part of the sequence, the igniter is deenergized and is converted to a flame sensing rod.
6. If a flame is detected, the gas valve remains open.
When the call for heat is satisfied, and the system
control mechanism de-energizes the burner line
voltage supply, the gas valves are turned off.

2. Check blower side door for seal. Check door
switch. Replace if necessary/
3. Check blower for obstructions. Replace
blower if necessary.

7. If no flame is detected on a single-try module, the gas
valve is closed, and the module will lockout until it is
reset. Reset is accomplished by removing power from
the module for at least five (5) seconds (thermostat
cycle required.)

Igniter 1. Check igniter for damage. Replace if
Does Not Glow: necessary.

2. Check voltage and resistance at igniter.
(Voltage should be 115V. Resistance should be
40-75 ohms.)

8. If no flame is detected on a three-trial module, the
gas valve is closed, and a purge period begins. After
the purge, the module acts to power the igniter for a
second warm-up period, and a second trial for ignition
period. If flame is still not established, a third and
final purge, warm-up, and trial cycle begins. After
three trials, the module will lockout until reset. Reset is
accomplished by removing power from the module for
at least five (5) seconds (thermostat cycle required.)

3. Check for obstructions to the air inlet and
outlet.
4. Check wiring and hose connections to the
air switch. Replace if necessary.
5. Check voltages at transformer primary and
secondary. Replace transformer or module if
necessary.

9. On a three-trial module, if flame is established and
lost on the first or second trial, the gas valve is turned
off, a purge, warm-up, and trial for ignition will occur
on a three-trial module, only three trials for ignition
are allowed per thermostat cycle.

Valve Does Not Gas pressure downstream of gas control can
Come On: be measure by using a manometer and
connecting to pressure tap on control/

1. Check to see if manual valve heater is ON.

Maintenance

2. Check to see if manual valve knob on heater
gas control in ON.

For best performance, the following maintenance procedures should
be performed before each heating season:
1. Be sure gas and electrical supply to heater are off
before performing any service or maintenance.

3. Supply gas pressure can be checked at
1/8” NPT pressure tapping on heater external
manual valve.

2. Check condition of blower scroll and motor. Dirt and
dust may be blown out with compressed air, or a
vacuum cleaner may be used.

4. Check to see if gas control is opening: no
manifold pressure indicates valve is closed.
If the valve is closed, either the gas valve or the
ignition module is faulty.

3. Check condition of burner. Carefully remove any dust
or debris from inside the burner box or burner cup.

WARNING: Do not disconnect ground leads
inside heater. Do not interchange grounded
and ungrounded leads on transformer or
ignition module.

4. Inspect the igniter. Replace igniter if there is excessive
carbon residue, erosion, breakage or other defects.
5. Check the inside of the firing tube with a flashlight. If
carbon or scale are present, scrape out the deposits
with a wire brush or rod, or metal plate attached to a
wooden pole.

Burner Does Not 1. Check to see if gas lines were properly

Light: purged of air.
2. Check inlet and outlet gas pressure during
ignition period.

6. Check to see that the burner observation window is
clean and free of cracks or holes. Clean or replace as
necessary.
Enerco | enerRadiant® XL Series Heater

Natural inlet pressure should be 4.6”

Operating Instructions and Owner’s Manual

Natural outlet pressure should be 3.5”

Honeywell Valve LED Status

LP inlet pressure should be 11.0”

The Ener-Radiant XL series Tube Heater is equipped with a honeywell
Smart Valve. This valve has a built-in diagnostic program, which will
assist in troubleshooting in the event of a valve-related problem. The
LED or (Light Emitting Diode) is located on the top of the valve as
shown in diagram below. The LED status indications are listed below
to help with the troubleshooting.

LP outlet pressure should be 10.25”
3. Check for proper orifice and air plate.
Burner Does Not 1. Check ground wire continuity.

Stay Lit: 2. Check burner internal wiring for reversed
leads.

FIGURE 22:

3. Check insulation on the igniter leads.

LED

4. Replace module if necessary.

OFF

INDICATED

Off

No power to the control

Bright-Dim

Normal operation.

This indication shows whenever the system is
powered, unless some abnormal event has occurred.

2-Flashes
Airflow providing switch remains closed longer than
30
seconds after call for heat begins (air providing
switch
stuck closed.)
3-Flashes
Airflow providing switch remains open longer than 30

seconds after combustion air blower is energized - or

blower does not energize.

Enerco | enerRadiant® XL Series Heater

4-Flashes

White jumper wire is loose.

5-Flashes

Flame signal sensed out of proper sequence.

6-Flashes

System Lockout.

Operating Instructions and Owner’s Manual

SECTION 8: Troubleshooting Guide. Ener-Radiant XL
START
Turn on thermostat
Does blower turn
on?

Check Thermostat
and Wiring. Is the Yes
power supply to unit
115V?

Is blower side door
in place?

No
Find the source
of the electrical
problem

Yes

Is the air intake or
exhaust blocked?

Remove door. Is
voltage at door
switch 115V?

Replace door

Check voltage at
gas valve.

Check voltage to
motor. Is it 115V?

Check wiring and
hose connection to
air switch. Are they
OK?
Yes

Remove Obstruction

Is the voltage at
the transformer
secondary 24V?

Is the ignitor
damaged?

After ignitor warmup period, does the
valve click?

Replace wiring and/
or hose connection.

Check door fit. If
damaged, replace
door.

Replace switch.

Yes

Jumper wires at
pressure switch.
Does the ignitor
glow red?

Is the blower fan
obstructed?

Yes Remove obstruction

No
Replace blower
motor.

Yes

Replace pressure
switch.

Is the voltage at the
transformer primary Yes
115V

Replace SmartValve.
Replace transformer

Check LED indicator on SmartValve for
indication of fault. Refer to SmartValve testing
on page ?? to determine problem.
Yes

Replace ignitor.

Check voltage at
ignitor. Is it 115V
during ignition
cycle?

Is the resistance
through igniter 40
to 75 ohms?

Yes

Check wire
connections.

Are the wires to
No
the SmartValve OK?

No
The SmartValve checks the status of the blower proving switch contacts must see a change in the
contact with every firing cycle. Placing a jumper at the switch out of sequence will result in a fault with
the LED indicator flashing two times.

Yes

Yes
Check for 115V transformer input at plug C3
on SmartValve. Check for 115V output of
C3. If no output voltage is present replace
SmartValve.

Yes

Depress switch.
Does blower come
on?

Yes

Check wiring and
connections

Yes

Check LED indicator on SmartValve for
indication of fault. Refer to SmartValve testing
on page ?? to determine problem.
Does the igniter
warm up and glow
red?

Yes

Replace/repair wires.

Yes
Replace SmartValve

Does the burner
light?

Were the gas lines purged of air?

The switch on the gas valve must be in the on
position and the line purged of air.

Yes

Check outlet gas pressure during ignition cycle.
Is the pressure 3.5” w.c. for natural or 10.5”
w.c. for lp?

Yes
Check inlet gas pressure. Is pressure correct?
Refer to page 40 for correct pressure for unit.
Yes

Does the burner
stay on?

Yes

Check inlet gas shutoff. Adjust regulator.
Contact gas supplier

Adjust to proper pressure.

Is the continuity of
the ground wire
OK?

Are L1 and L2
reversed?

Check for proper
burner orifice and
air plate.

Is the wiring at the
SmartValve OK?

Is the insulation on
Yes the sensor lead OK? Yes

Is the sensor
positioned
properly?

Repair/Replace

Yes

Repair wiring.

Repair wiring

Is the sensor dirty?

Clean sensor.

Yes
Does the burner
run until the call
for heat ends?

Yes

Check the continuity of the ground wire.
Check the thermostat.

If a problem still exists, contact Enerco Technical Products Customer Service
1-800-251-0001

No
A fault indication of six flashes may indicate
that the flame sensing circuit is not functioning
properly. Perform the following series of checks
to correct the problem.

Enerco | enerRadiant® XL Series Heater

Replace Sensor

Operating Instructions and Owner’s Manual

Section 9
Replacement Parts
3

SIDE VIEW

10
6
5
9

1
TOP VIEW
Item

Part Number

Description

02731

Hot Surface Igniter

02730

Flame Sensor

10413A

Air Sensing Switch (ERXL-60, 80, 100, 125)

10414A

Air Sensing Switch (ERXL-150, 175)

01391A

Door Switch

02371

3 Cup Assembly
Burner

07376

Motor and Blower Assembly

17376

Manifold

00016

SIDE VIEW

Gas Valve - Natural Gas

00017

Gas Valve - LP Gas

12404

Inspection Window

08364A

Transformer

02729

Tube Flange Casting

10
Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

Section 10
Engineering Specifications

Burner Ratings and Heat Exchanger Lengths: (Natural and LP)

The total heating system supplied shall be design certified by the
American Gas Association and the Canadian Gas Association.
A. Burner & Burner Controls
1. Burners shall be capable of firing with one of the fuel options
as specified on the purchase documents: Natural Gas or LP.
2. Burners shall be supplied to fire at any one of the input rates
as specified.

ERXL-60 60,000 BTU/Hr. ERXL-125 125,000 BTU/Hr.

ERXL-80 80,000 BTU/Hr. ERXL-150 150,000 BTU/Hr.

ERXL-100 100,000 BTU/Hr. ERXL-175 175,000 BTU/Hr.

3. Burner shall be equipped with a direct sense silicon-carbide
hot surface ignition control system with 100% shut-off ignition
device. Power supplied to each heater shall be 120V, 60Hz, single
phase. Burners shall be rated for 1.0 Amp (run) and 5.0 Amp
(start.)
4. Burner shall be equipped with thermal overload motor protection, balanced air rotor, combustion air proving safety pressure
switch, and viewing window for flame observation.
5. When specified, in contaminated environments, the burner
shall be capable of supplying outside air to each burner for the
support of combustion.
6. All burners shall be pre-wired with a grounded electrical cord
and plug.
7. At customer’s choice, burners may be controlled with either
an optional line voltage thermostat or by optional low voltage
thermostats with an appropriate low voltage transformer relay.
8. Gas supply to the burners shall conform to the following:
1/2” NPT gas connector size
Natural Gas: 4.6” W.C. MIN, 14.0” W.C. MAX
LP Gas:
11” W.C. MIN, 14.0: W.C. MAX

Model #

Rate (BTU/Hr.)

Heat Exchanger
Length

Turbulator

ERXL-60

60,000

20 ft.

10 ft.

ERXL-80S

80,000

20 ft.

10 ft.

ERXL-80

80,000

30 ft.

10 ft.

ERXL-100S

100,000

30 ft.

5 ft.

ERXL-100

100,000

40 ft.

None

ERXL-125S

125,000

40 ft.

None

ERXL-125

125,000

50 ft.

None

ERXL-150

150,000

50 ft.

None

ERXL-150L

150,000

60 ft.

None

ERXL-175

175,000

50 ft.

None

ERXL-175L

175,000

60 ft.

None

Gas pressure at MANIFOLD:
Natural Gas:

3.5” W.C.

LP Gas:

10.5” W.C.

1/2” NPT Gas Connector Size
Gas INLET pressure:

B. Heat Exchanger
1. Radiant tubing shall be 4” diameter aluminized steel supplied
in 10 ft. sections. Sections shall be joined with stainless steel
wrap-around couplings.
2. Reflector to be of aluminum material and designed to direct all
radiant output below horizontal centerline of radiant tube.
3. Heaters shall be vented according to manufacturer’s recommendations.

Natural Gas:

4.6” W.C. Min

11.0” W.C. Max

LP Gas:

11.0” W.C. Min

14.0” W.C. Max

1/2” NPT Gas Connector Size
Electrical Rating: (All Models)
120V - 60Hz
1.0 AMP (Run) 5.0 AMP (Start)
Dimensions:

Enerco | enerRadiant® XL Series Heater

Flue Connection Size:

4”

Outside Air Connection Size:

4”

Operating Instructions and Owner’s Manual

FIGURE 25: Ener-Radiant XL Dimensions & Suggested Mounting Heights
Minimum Total Length (see chart below)

Minimum Total Length (see chart below)

Turbulator
(some Models)

Reflector

17.75”

Heat Exchanger
Tubing

Burner Side View

9.25”
13.75”
Burner Rear View

Enerco | enerRadiant® XL Series Heater

Model #

Minimum
Total Length

Suggested
Min. Space

Mounting
Height Spot

ERXL-60

21” - 4”

10’ - 12’

8’ - 10’

ERXL-80S

21” - 4”

12’ - 15’

10’ - 12’

ERXL-80

31” - 4”

12’ - 15’

10’ - 12’

ERXL-100S

31” - 4”

12’ - 15’

ERXL-100

41” - 4”

15’ - 18’

15’

ERXL-125S

41” - 4”

15’ - 20’

15’

ERXL-125

51” - 4”

15’ - 18’

15’

ERXL-150

51” - 4”

20’ - 23’

20’

ERXL-150L

61” - 4”

20’ - 25’

20’

ERXL-175

51” - 4”

20’ - 23’

20’

ERXL-175L

61” - 4”

20’ - 25’

20’

Operating Instructions and Owner’s Manual

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Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

HEATSTAR
Model

ERXL-60
ERXL-80
ERXL-100
ERXL-125
ERXL-150
ERXL-175

ERXL-80S
ERXL-100S
ERXL-125S
ERXL-150L
ERXL-175L

WARNING:

USE ONLY MANUFACTURER’S REPLACEMENT PARTS. USE OF ANY OTHER PARTS
COULD CAUSE INJURY OR DEATH. REPLACEMENT PARTS ARE ONLY AVAILABLE
DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A QUALIFIED SERVICE
AGENCY.
FOR INFORMATION REGARDING SERVICE OR PARTS:
Contact your local heating service technician or dealer.
FOR ADDITIONAL INFORMATION:
Please call Toll-Free 800-251-0001—www.enerco.com
Our office hours are 8:30 AM — 5:00 PM, EST, Monday through Friday.
Please have the model number, serial number and date of purchase ready.
LIMITED WARRANTY
The company warrants this product to be free from imperfections in material or
workmanship, under normal and proper use in accordance with instructions of The Company,
for a period of one year from the date of delivery to the buyer. The Company, at its option,
will repair or replace products returned by the buyer to the factory, transportation prepaid
within said one year period and found by the Company to have imperfections in material or
workmanship.
If a part is damaged or missing, call our Customer Service Department at 800-251-0001.
Address any Warranty Claims to the Customer Service Department, ENERCO, 4560 W. 160TH
ST., CLEVELAND, OHIO 44135. Include your name, address and telephone number and
include details concerning the claim. Also, supply us with the purchase date and the name
and address of the dealer from whom you purchased our product.
The foregoing is the full extent of the responsibility of the Company. There are no other
warranties, express or implied. Specifically there is no warranty of fitness for a particular
purpose and there is no warranty of merchantability. In no event shall the Company be liable
for delay caused by imperfections, for consequential damages, or for any charges of the
expense of any nature incurred without its written consent. The cost of repair or replacement
shall be the exclusive remedy for any breach of warranty. There is no warranty against
infringement of the like and no implied warranty arising from course of dealing or usage of
trade. This warranty will not apply to any product which has been repaired or altered outside
of the factory in any respect which in our judgment affects its condition or operation.
Some states do not allow the exclusion or limitation of incidental or consequential damages,
so the above limitation or exclusion may not apply to you. This Warranty gives you specific
legal rights, and you may have other rights which vary from state to state.

Enerco reserves the right to make changes at any time, without notice or obligation, in colors, specifications, accessories, materials and models.
Enerco, 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-881-5500
© 2003, Enerco/Mr. Heater. All rights reserved

CSA REQUIREMENT 7-89
ANSI Z21.86B 2002
ANS Z83.20 • CSA 2.34-2003
Enerco | enerRadiant® XL Series Heater

Operating Instructions and Owner’s Manual

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Enerco Erxl 100 Users Manual

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