Serengeti-IR B2245897 User Manual

COMBUSTION RESEARCH CORPORATION

FOR YOUR SAFTEY

If you smell gas:

1. Open windows

2. DO NOT try to light any appliance

3. DO NOT use electrical switches

4. DO NOT use any telephone in your
building

5. Leave the Building

6. Immediately call your local gas
supplier after leaving the building.
Follow gas supplier’s instructions.

7. If you cannot reach your gas
supplier, call the fire department.

Heaters for Residential Garages and

Gas fired, Low Intensity Infrared

Light Industrial / Commercial

Applications

Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.

Some objects will catch fire or explode
when placed near this heater.

Failure to follow these instructions can
result in death, injury or property
damage.

WARNING

Fire Hazard

Installation, Operation, Maintenance

and Parts Manual

Read and understand these 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.

A gas-fired appliance could expose you to substances in fuel or fuel
combustion, which has been determined by the State of California to
cause cancer, birth defects, or other reproductive harm. Contact
factory for further information.

WARNING

Installer

Please take time to read and understand these
instructions prior to any installation. Installer must
give a copy of this manual to the owner

Owner

Keep this manual in a safe place in order to provide
your serviceman with the necessary information.

Combustion Research Corp.
2516 Leach Rd.
Rochester Hills, MI 48309-3555
Telephone: [phone]
Fax: [phone]

www.combustionresearch.com

TM

TM

Issue Date: 7-18-05 Revision Date: 9/16/2016 Rev. 7 Bulletin SE050718

Omega II® Installation, Operation & Service

FIRE OR EXPLOSION HAZARD

Can cause death, severe injury and/or property damage.

WARNING

!

1. Read this manual carefully before installing or servicing
this equipment. Improper installation, service or
maintenance can cause death, injury and/or property
damage.

2. Check clearances given on the outside of each burner to
make sure the product is suitable for your application.

3. Installer must be a trained, experienced service
technician.

4. All service must be performe d only by a trained service
technician or representative

5. After installation is complete, check system operation as
provided in these instructions.

Combustibles: Failure to maintain the specified minimum
clearances to combustibles could result in a serious fire
hazard. Do not locate flammable or combustible materials
within this distance. Signs must be posted near thermostat
and in storage areas to specify maximum stacking h eight to
maintain required clearances to combustibles. Do not locate
in hazardous atmospheres containing flammable vapors or
combustible dust.

United States: Installations in public garages or airplane
hangars are permitted when in accordance with NFPA-88
(latest edition) and NFPA-409 (latest edition) Codes.

Canada: Installation in public garages and airplane hangars
is permitted when in accordance with CAN/CGA B.149.1 &
CAN/CGA B149.2.

Vehicles: Minimum clearances must be maintained from
vehicles parked, below the heater. Ensure that adequate
clearance is maintained where vehicles are in operation or
being serviced.

Gas Connection: There is an expansion of the r adiant pipe
With each firing cycle, and this will cause the burner to move
with respect to the gas line. This can cause a gas leak
resulting in an unsafe condition if the gas connection in not
made strictly in accordance with page 12 of these
instructions.

Ignition: This appliance does not have a pilot. It is equipped
with an ignition device, which automatically lights the burner .
Do not try to light the burner by hand.

Mechanical Hazard - Vacuum Exhauster: High speed
rotating vacuum exhauster impeller/wheel can c ause severe
injury. Do not operate the vacuum exhauster without
impeller. Loose clothing can be drawn into unguard ed inlet
and entangle with impeller wheel. Keep hands and fingers
away from inlet and outlet. Install exhaust duct with "bird
screen" or approved vent cap on vacuum exhauster outlet.

Mechanical Hazard - Suspension: Use appropriate
suspension hardware, beam clamps (rod or perforated
strap) and turnbuckles at predetermined locations. The
weight and normal movement of the heating system may
cause support failure if the following minimum suspension
requirements are not met: Distance between combination
hangers must be 10-ft. (3 M) or less; chain size must be 3/0
minimum or equivalent.

NOTICE CAUTION

Failure to follow these instructions can cause personal inju ry
or property damage:

Caution must 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. Page 14 & 15 outlines
minimum acceptable clearances to combustibles.

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

Do not use in an atmosphere containing halogenated
hydrocarbons or other corrosive chemicals. Some
compounds in the air can be drawn into the equ ipment and
can cause an accelerated rate of corrosion of some p arts of
the radiant heat exchanger. The use of such chemical
compounds in or near the enclosure should be avoided
where a longer life of the burner, tubing and other parts is
desirable.

Combustion Research Corporation

!

Failure to follow these instructions can cause damage to the
system components:

DO NOT high-pressure test the gas piping with the burners
connected. Failure to follow this procedure will exceed the
pressure rating of burner gas controls and this will require

complete replacement of these parts.
DO NOT operate a blower with an unrestricted inlet. An

unrestricted airflow will overload the motor, which can cause
burnout or failure.

This heater is designed for heating nonresidential indoor
spaces. These instructions, the layout drawing, local code s
and ordinances, and applicable standards that a pply to gas
piping, electrical wiring, venting, etc. must be thoroughly
understood before proceeding with the installation.

Serengeti-IR™ Installation, Operation & Service

INSTALLER

PLEASE TAKE TIME TO READ AND UNDERSTAND THESE INSTRUCTIONS PRIOR TO ANY

INSTALLATION. Contact your representative or the factory if you have any questions

OWNER

Retain this manual in a safe place to provide your serviceman with information if the situation arises.

TABLE OF CONTENTS

Heater Safety & Burner Label Locations 1 & 2
Warning Symbols 3
Standards, Certifications & Codes 3 & 4
Installer Qualifications & Responsibility 4
Assembly – Tube & Reflectors 5 & 6
Suspension Methods 7
Combustion Tube Installation 8
Reflector Mounting 8
Customizing System 8
Seismic Restraint Suspension 9
Burner Connection & Installation 10
Gas Line Installation 11
Flexible Gas Connector Installation 12
Technical Data 13
System Dimensions 14
Clearance To Combustibles 15 & 16
Side Shield Installation 17
Combustion Air Supply 18 & 19
Venting 20 -22
Electrical Information 23
Burner Internal Wiring Schematic 24
Thermostat Wiring 25
System Startup 26 & 27
Sequence Of Operation 27
Maintenance & Service 27 – 31
Trouble Shooting Flow Chart 32 & 33
Burner Parts List 34 & 35
Accessories & Optional Equipment 36 – 38
Warranty Statement and Terms &d Conditions 39 & 40
Sample Clearance To Combustible Warning Sign 43

Serengeti-IR™ heating systems DO NOT qualify for use in explosion proof installations.

Heaters SHALL NOT be used in living/sleeping areas.

©2016 COMBUSTION RESEARCH CORPORATION, INC.

All rights reserved. No part of this work covered by the copyrights hereon in may be reproduced or copied in any form or by any means -
graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage and retrieval systems - without written
permission of COMBUSTION RESEARCH CORPORATION, Inc.

PAGE(S)

Combustion Research Corporation

Omega II® Installation, Operation & Service

This Page Intentionally Left Blank

Combustion Research Corporation

Serengeti-IR

™

Installation, Operation & Service

HEATER SAFETY

Please take time to familiarize yourself
this manual as your safety is important
is important to us. This symbol is used
throughout this manual to notify you of
possible fire, electrical, burn hazards or
other safety issues. Pay special
attention when reading this manual and

follow the warnings.
Read this manual carefully before installation, operation or

service of this equipment.
Protective gear (including safety glasses) is to be worn

during installation, set up and service. Sheet metal
components, including the aluminum reflectors and field cut
radiant tubes used on this system as well as various
venting components have sharp edges. The use of gloves

will also help in reducing dirt and oils to the surface of the
reflectors.

If additional Installation, Operation and Service Manuals are
needed, contact your Combustion Research Corporation
independent representative or Combustion Research
Corporation. The IOM’s can also be found at
www.combustionresearch.com.

In order to help prevent personal injury and damage to the
heater components, at least two persons will be required for
installation.

SAFETY LABELS AND THEIR LOCATION

Product safety signs or labels should be replaced by the
end user or servicing contractor when they are no longer
legible or have been damaged. Please contact Combustion
Research Corp. or your Combustion Research Corp.
independent representative to obtain signs or labels.

Logo Label
P/N 900.2706

Gas Connector Label
P/N 900.2712

Bottom Panel

Wiring Schematic located inside Bottom Panel
P/N 900.27D

Combustion Research Corporation Page 1

Serengeti-IR™ Installation, Operation & Service

Mounting Height Information Label
P/N 900.2705

Side Panel

Venting Instructions Label

Rating Plate Label
P/N 900.2601

Clearance to Combustibles Label
P/N 900.2702

Warning Label
P/N 900.2704

Side Panel

Operating Instructions Label
P/N 900.2701

Page 2 Combustion Research Corporation

Serengeti-IR™ Installation, Operation & Service

WARNING SYMBOLS

!

WARNING

Warning indicates a potentially hazardous situation which,

if not avoided, could result in death or injury.

CAUTION

!

Caution indicates a potentially hazardous situation which, if

not avoided, could result in minor or moderate injury.

NOTICE

Notice indicates a potentially hazardous situation which, if

not avoided, could result in property damage.

CHECKING SHIPMENT

Upon receipt of shipment, check shipment against Bill of
Lading for shortages. Also check for external damage to
cartons or tube bundles. Shortages and/or external
damage to cartons or tubes must be noted on the Bill of
Lading in the presence of delivery trucker. The delivery
trucker should acknowledge any shortages or damage by
initialing this "noted" Bill of Lading.

Claims for damaged material, or shortages that were not
evident upon receipt of shipment must be reported to
carrier and Combustion Research Corporation Sales
Representatives within 72 hours.

Before starting to assemble the heater, make sure
that all optional and accessory items are accounted
for and are available for assembly. It is also
important to verify that the correct gas burner is
supplied for the gas service, i.e., natural gas burner
for natural gas supply.

IMPORTANT

TESTED UNDER STANDARDS

AMERICAN STANDARDS – Z83.20-(current standard)

Z21.86-(current standard)
CSA Requirement 7-89

CANADIAN STANDARDS – CSA 2.34-(current standard)
CSA 2.32-(current standard)

GAS FIRED BROODERS - CAN 1-2.20-M85

BUILDING CODES

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

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

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

AIRCRAFT HANGERS

Heaters for use in aircraft hangers must be installed in
accordance with;
United States: Refer to Standard for Aircraft Hangars,
ANSI/NFPA 409 (latest edition).
In Canada: Refer to Standard CAN/CGA B149.1 and
B149.2 and applicable Standards for Aircraft Hangars.

Basic guidelines are as follows:

1. Suspended heaters in aircraft storage or service areas
shall be installed at least ten feet (10') 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.

2. In other sections of aircraft hangers, such as shops or
offices communicating with airplane storage or servicing
area, heaters shall be installed in accordance with their
listings and mounted not less than eight feet (8') above the
floor.

3. Heaters installed in aircraft hangers shall be located so
as not to be subject to injury by aircraft, cranes, moveable
scaffolding or other objects. Provisions shall be made to
ensure accessibility to suspended heaters for recurrent
maintenance purposes.

!

WARNING

IMPROPER INSTALLATION
CAN CAUSE DEATH, SEVERE
INJURY AND/OR PROPERTY
DAMAGE.

Read and understand these installation, operating and
maintenance instructions thoroughly before installing or
servicing this equipment. Only trained, qualified gas
installation and service personnel may install or serv ice
this equipment.

These instructions, the layout drawing, local codes and
ordinances, and applicable standards such as apply to gas
piping and electrical wiring must be thoroughly understood
before proceeding with the installation.

PUBLIC GARAGES

Heaters for use in public garages must be installed in
accordance with:

United States: Standard for Parking Structures NFPA 88A
(latest edition) or the Code for Motor Fuel Dispensing
Facilities and Repair Garages NFPA 30A (latest edition).

Canada: Refer to CAN/CGA B149.1 and B149.2:
Installation Codes for Gas Burning Appliances and
applicable Standards for Public Garages.:

Basic guidelines are as follows:

1. Heaters shall be installed in accordance with their listings
and not be mounted less than eight feet (8') above the floor.
Minimum clearances to combustibles must be maintained
from vehicles parked below the heater.

2. When installed over hoists, clearance to combustible
material must be maintained from upper most point of the

Combustion Research Corporation Page 3

hoist, or provided as insulating or reflective barrier on the
hoist (consult representative or factory for guidance).

Serengeti-IR™ Installation, Operation & Service

maximum stacking height so as to maintain the
required clearance to combustibles.

ELECTRICAL GROUNDING

The burner and blower unit must be electrically grounded in
accordance with the following codes:

United States: Refer to National Electrical Code
ANSI/NFPA 70 (latest edition). Wiring must conform to the
latest edition of National Electrical Code

™

™

,

, local ordinances,

and any special diagrams furnished.
Canada: Refer to Canadian Electrical Code CSA C22.1

Part 1 (latest edition).

GAS INPUT LINES

The method of pipe sizing must conform to the U.S.
National Standards: ANSI Z223.1 (current standard)
National Fuel Gas Code or CAN 1-B149.1 Installation
Code, and should be installed in accordance with all
National and Local Codes and ordinances.

CLEARANCES AND ACCESSIBILITY

Inlet air assemblies are to be installed with the air opening
pointing toward the ground to protect against rain and
snow. Inlet is provided with a bird screen. Adequate
clearance must be provided around the inlet air assembly
opening to provide an unobstructed entry for the
combustion air. The air should be taken from outside the
building. Clearances must be sufficient to provide
accessibility for servicing. The air inlets must be a
minimum of six feet (6') from the exhaust port.

HAZARDOUS LOCATIONS

Where there is the possibility of exposure to combustible
airborne materials or vapor, consult the local Fire Marshal,
the fire insurance carrier, or other authorities for approval of
the proposed installation. Serengeti-IR™ heating systems

DO NOT qualify for use in explosion proof installations.

INSTALLER QUALIFICATIONS

Only firms or individuals qualified to perform work in
accordance with the applicable specifications should be
engaged to install a Serengeti-IR™ system. Consult local
Building Inspectors, Fire Marshals, or the local applicable
Combustion Research Corporation representative for
guidance.

INSTALLER RESPONSIBILITY

Serengeti-IR™ systems are installed on the basis of
information given in a layout drawing. Together with these
instructions and the cited codes and regulations comprise
the information needed to complete the installation. The
installer must furnish all needed material that is not
furnished as standard Serengeti-IR
his responsibility to see that such material, as well as the
installation methods he uses result in a job that is workman
like and in keeping with all applicable codes.

In storage areas where stacking of materials may
occur, the installer must provide signs that specify the

™

equipment, and it is

GENERAL CONSIDERATIONS

Combustion Research Corporation Factory
Representatives are experienced in the application of this
equipment and can be called on for suggestions about
installation which can give the owner of the building a more
satisfactory and economical installation.

When installing the Serengeti-IR
advantage of the building upper structure, beams, Joists,
purloins etc. from which to suspend the system. Mount
units at minimum height for ease of installation and
maintenance but of specified height to fully utilize the
building.

The general lay out of the Serengeti-IR
has been established by the engineering drawing. The

Serengeti-IR

™

heaters are used to heat building structures
as well as localized areas that would include doors, loading
docks and isolated workstations throughout the building.
The location of the Serengeti-IR
that the area is covered uniformly, in that the heat is
positioned on the perimeter or to each side of the area to
be heated, rather than directly overhead. This will give a
better comfort condition for workers who would be in these
areas. Consult with your representative or the factory for
additional guidance in designing the optimum layout for
your project.

™

Serengeti-IR

is a suspended system, which requires that
consideration be given to the factors that determine its
stability, flexibility, safety, and satisfactory operation.
Before installation, the contractor should inspect the
building along with the owner (or engineer) responsible for
the building to check on the use of the building. Inspection
of the building including the use of floor space for storage
and height of materials stored in the building must be noted
so that there are no problems with clearances to
combustibles. Particular care should be taken over doors
and high objects such as busses, trucks, cranes, car lifts,
etc. Whenever possible use side wall penetrations for
combustion air inlets to burners and exhaust venting.

DO -

 Maintain specified clearances to combustibles, and

to heat sensitive material, equipment, and
workstations.

 Provide approved heat radiation shielding or

barriers if needed. Refer to the National Fuel Gas
Code for guidance.

 Provide access for general servicing; provide easy

access for complete removal of burner and blower.

 Familiarize yourself with local and national codes.

Develop a planned installation 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. Be sure to
accommodate thermal expansion of the hot tube.

 Use the gas connector ONLY as shown in the

instructions.

 Provide end clearance so tubing won't expand and

touch a wall or a structural member.

™

system, take maximum

™

heating system

™

heaters should be such

Page 4 Combustion Research Corporation

Serengeti-IR™ Installation, Operation & Service

A

A

R

SSEMBLY: TUBE & REFLECTO

STRAIGHT & "U" TUBE ASSEMBLY

CAUTION

!

CUT HAZARD - SHARP EDGES.

Wear protective gloves when installing and handling
and cutting radiant tubes. Failure to follow these
instructions will result in personal injury.

1. Remove the Reflector(s), tubes and hanger from the
shipping carton. Inspect for shortages and damages as
well as correct gas service for burners.

2. Assemble the tubes as illustrated making sure to apply
sealer to the couplers before sliding the tubes together.

INSTALL COMBUSTION TUBE WITH WELD SEAM
ON BOTTOM AND MAKE SURE THAT THE TUBE
WITH THE INTERNAL TURBULATORS IS
ASSEMBLED IN TUBES AS SHOWN IN ILLSTRATED
ON PAGES 4 & 5.

Burner Tube End View

Weld Seam

Position

pply sealer sparingly to inside
edge of radiant tube, spread
with dowel or plastic tube.

Placement of screws @
approximately 120°

3. Next secure joints with the self drilling and taping
screws provided (use three per joint).

4. Next install hangers supports by sliding them into place
and position them as illustrated. REFER TO PAGES 4
& 5 FOR PROPER LOCATION. NOTE: Do not vary the
location of the hangers anymore than +/- 4" from the
recommendations.

5. IMPORTANT: Slide the reflectors into place (inside

hangers) and overlap them approximately 1" to 2"
and secure no more than two together with sheet
metal screws. A reflector expansion joint (unsecured

reflectors) at every other overlap is required for
expansion and contraction of the system

Bottom of Tube

STRAIGHT TUBE SYSTEMS

“U” TUBE SYSTEMS

NOTE: The assembled tubing and reflector assembly

may be too long to conveniently install in one piece,
therefor it is recommended that the assembly be
raised into position in two pieces. Apply sealer and
secure the final joint when in position.

Combustion Research Corporation Page 5

ASSEMBLY: TUBE & REFLECTOR

STRAIGHT TUBE SYSTEM

Serengeti-IR™ Installation, Operation & Service

NOTE: Install Reflector inside

hanger as shown

10’ SYSTEM

66”

40”

- TURBULATOR

- BURNER END

- HANGER

S

- INTERMEDIATE SUPPORT

“U” TUBE SYSTEM

- TURBULATOR

- BURNER END

- HANGER

S

S

118”

S

20’ SYSTEM

55”55”118”

30’ SYSTEM

55”55” 118”

21”

21”

5’ “U”

10’ TUBE LENGTH

21”

Note:

Install Reflector inside

hanger as shown.

40”

20’ TUBE LENGTH

66”

30’ TUBE LENGTH

44”

10’ “U”

15’ “U”

40”

66”

66”

Page 6 Combustion Research Corporation

Serengeti-IR™ Installation, Operation & Service

A

SUSPENSION

!

WARNING

COLLAPSE, FIRE AND EXPLOSION HAZARD

Improper suspension of the tube heater may result in
collapse and being crushed. Always suspend from a
permanent and secure part of the building structure
that can evenly support the total force and weight of
entire the heating system.

Failure to maintain minimum clearance to
combustibles may result in fire and/or explosion,
property damage, serious injury or death. Always
maintain minimum clearances and post clearance
signs where needed.

Combustion Research Corporation recommends that

Serengeti-IR

Chain and “S” hooks are supplied as an option. DO NOT
STRETCH OR INSTALL CHAIN OTHER THAN IN A

™

systems are hung by means of chain.

SSEMBLY: SUSPENSION

VERTICAL FASHION WHEN INITIALLY INSTALLED
(BURNER NOT FIRING).

If chain is not supplied by Combustion Research Corp.,
furnish a chain with a minimum 90 lb. workload (trade size
#3 or larger). A minimum of 12" (30 cm) of hanging chain
is recommended. This allows for system expansion and
contraction, reducing the likelihood of reflector and radiant
tube warping and/or expansion noise.

CAUTION: Infrared tube systems expand and contract
upon each call for heat. System expansion of up to 4” can
be expected.

Provisions must be made to limit lateral movement when
systems are installed in site conditions where open doors
may create a wind condition – see page 8 for guidelines.

Radiant tubes DO NOT require sloping.
For fine adjustment turnbuckles may be used.

NOTES:

 SECURE TURNBUCKLES SO THAT THEY WILL NOT

UNWIND OR UN-SCREW.

 CRIMP "S" HOOKS CLOSED BEFORE LEAVING JOB.

REFLECTORS ARE NOT TO BE INSTALLED ON TOP OF
COMBINATION HANGERS.

Beam

Beam Clamp

and Turn Buckle

Chain

Threaded Rod

Suitable Expansion
Anchor

Chain

Concrete
Beam

Beam Clamp

Secure turnbuckle
with JAM nuts or wire
to prevent unwinding

Eye Bolt Screw
with Washer and
Locknut

Chain

Bar Clamp

Chain

Wood Beam

All ”S” Hooks MUST Be

Manually Closed By

Installer

Combustion Research Corporation Page 7

ASSEMBLY: INSTALLATION GUIDELINES

COMBUSTION TUBE INSTALLATION

The first section or radiant tube downstream of the
burner is a heavy wall 16 Ga. heat-treated
aluminized steel tube. This tube is referred to as the
combustion tube. One end of this tube is swaged to
fit inside the next spiral radiant tube. The end that is
un-swaged is coupled to the burner assembly – see

Install Combustion Tube
with Weld Seam On Bottom

Serengeti-IR™ Installation, Operation & Service

page 9. It is necessary that the weld seam on this
combustion tube be positioned so that it is on the
bottom when installed.

This applies for both straight tube and “U” tube
systems. When the systems are mounted on a 30°
angle the weld seam should always be on the
bottom.

! IMPORTANT !

TUBE & REFLECTOR HANGING METHODS

The Serengeti-IR™ system reflectors can be suspended
horizontally or at a 30° angle. The combination hanger is
designed so that the reflector angle will be horizontal when
suspended from the top loop or at a 30° angle when

Horizontal Mounting With

“Combination” Hanger

30° Mounting With

“Combination” Hanger

CUSTOMIZING SYSTEMS

A maximum of two 90° or four 45° elbows may be installed
after THE SECOND tube. The tube couplers that have
been factory installed will have to be removed to
accommodate the installation of any elbows. Any
additional elbows, radiant tube and reflector is optional
equipment.

Reflector Elbow

suspended from the offset loop – see the illustration
below.

The panel hangers may also be suspended horizontally or
at a 30° angle – see illustration below

Horizontal Mounting With

“Panel” Hanger

30° Mounting With “Panel”

Hanger

DO NOT INSTALL OR JAM TURBULATORS IN
ELBOWS OR "U" BENDS. CONSULT YOUR
REPRESENTATIVE OR THE FACTORY FOR PROPER
INSTALLATION & GUIDANCE.

Secure To Connecting Reflector

With Sheet Metal Screws

Page 8 Combustion Research Corporation

Serengeti-IR™ Installation, Operation & Service

SEISMIC RESTRAINT SUSPENSION METHODS

For standard seismic restraint such as earthquake
prone areas, install seismic restraint chain or cable
as shown below. If high winds can be encountered
in the building, such as found in airplane hangers
where opposing doors are simultaneously open, or
system is installed near or below the door opening,
additional support of the radiant tube and reflector

Seismic Restraints

Use chain or min. 1/8”

aircraft cable

30° Min.

45° Max.

30° Min.

45° Max.

Install the cable clamp

approximately 3” from the

edge of the reflector.

Clamp tight to prevent

chains or cables from

sliding on hanger

SUSPENSION: SEISMIC RESTRIANT

network will be required. See the “Seismic
Suspension For High Wind Applications” below for

details. If there are any questions regarding what
method is best suited for your application consult
your sales representative or contact the factory. If
the system is a straight system (no elbows or tee's),
apply an anti sway chain or wire rope which is
parallel to the radiant tube at approximately the
middle of the run.

30° Min.
45° Max.

30° Min.

45° Max.

SEISMIC RESTRAINT FOR HIGH WIND APPLICATIONS

In high wind conditions it is recommended that
seismic restraints and reflector retention wire be
installed. See details below for recommended
installation of seismic restraint and anti sway
retention chains (wire rope). The vertical threaded
rod shall be attached and suspend the reflector
hangers at intervals of eight to ten feet (8' - 10'). At
least one vertical threaded rod shall be placed at
every elbow and/or tee connection. The threaded

30° MIN.

°

30° MIN.

°

rod is used to prevent the system from lifting during
high wind conditions, the chain or wire rope will keep
the system from swaying from side to side. When
connecting threaded rod to "Z" purlin use beam
clamp or drill a hole through "Z" purlin and secure
with two 3/8" nuts and a lock washer. If the system
is a straight system (no elbows or tee's), apply an
anti sway chain or wire rope which is parallel to the
radiant tube at approximately the middle of the run.

Punch or drill a small hole (approximately 1/8”) in the reflector near the
reflector hanger. Insert an appropriate length of 14 Ga. galvanized
wire through this hole and encircle the combination hanger. Maintain
a loose loop around the hanger, this will allow for expansion of the
system. Twist the ends of the wire together and trim as required. This
retention wire may be installed on either sides, or edges of the
reflector for severe wind conditions.

Combustion Research Corporation Page 9

ASSEMBLY: BURNER CONNECTION

CONNECTING BURNER ASSEMBLY TO
RADIANT TUBE/REFLECTOR ASSEMBLY

!

WARNING

FIRE OR EXPLOSION HAZARD

IMPROPER INSTALLATION, ADJUSTMENT,
ALTERATION, SERVICE OR MAINTENANCE
CAN CAUSE DEATH, SEVERE INJURY
AND/OR PROPERTY DAMAGE.

There Is expansion of the radiant pipe with each firing
cycle and this will cause the burner to move with
respect to the gas line. This can cause an unsafe
condition if the gas pipe connection is not done in strict
accordance to the instructions.

Serengeti-IR™ Installation, Operation & Service

Angle Iron, Uni-strut, etc. and then suspend the chain so
that it hangs vertically.

!

WARNING

FIRE OR EXPLOSION HAZARD

IMPROPER INSTALLATION, ADJUSTMENT,
ALTERATION, SERVICE OR MAINTENANCE
CAN CAUSE DEATH, SEVERE INJURY
AND/OR PROPERTY DAMAGE.

To insure proper burner performance the burner head
assembly MUST be mounted vertically even when tube
and reflector assembly is angle mounted. Failure to do
so may result in erratic pressure switch operation.

1. Remove the burner assembly from its shipping carton
and using the same type of chain, hang the burner so that
it butts up to the 16 Ga. tube of the tubing and reflector
assembly, and connect the two with the draw band coupler
provided. IMPORTANT NOTE - THE WELD SEAM OF
THE 16GA. TUBE MUST BE POSITIONED SO THAT IT
IS ON THE BOTTOM. Position bolting assembly on the
TOP SIDE of the tube assembly as shown. After
tightening the coupler, check to make sure the burner is
lined up squarely - reposition as may be required, and re­tighten the drawband clamp. Secure with 2 sheet metal
screws. See illustration below. Install reflector end cap at
the burner end of the reflector. Fasten to reflector with
sheet metal screws.

Drawband Coupler
Mount Bolt Assembly

Suspension
Point

2. Connect the thermostat, gas and electrical supplies and
hook up the exhaust flue and combustion air supply as it
outlined in this manual.

3. The system is now ready to be fired. Refer to the
START UP section of this manual.

NOTES: Heater must be independently supported and not
rely on the gas or electrical line for any of its support.

If there is not a convenient point for suspending the
hanging chain above the heater DO NOT try to "stretch"
the span by having severe angles on the chain. Rather
build a bridge between the existing building structure using

On Top Of Tube

Secure With Sheet

Metal Screws

Install Reflector End
Cap On This Side
Of Drawband
Coupler

NOTE: On “U” tube systems, install exhaust end of radiant
tube on motor side of burner assembly. This will allow
easy access to burner controls and is necessary for proper
burner operation for un-vented systems.

Install exhaust on
motor side of burner
assembly

Reflector Mounted at
30° angle. Keep burner
assembly vertical

Page 10 Combustion Research Corporation

Serengeti-IR™ Installation, Operation & Service

GAS SUPPLY

!

WARNING

FIRE OR EXPLOSION HAZARD

IMPROPER INSTALLATION, ADJUSTMENT,
ALTERATION, SERVICE OR MAINTENANCE
CAN CAUSE DEATH, SEVERE INJURY
AND/OR PROPERTY DAMAGE.

Follow these warnings exactly.

1. Disconnect power supply before wiring to prevent
electrical shock or equipment damage.

2. To avoid dang erous accumulation of fuel gas, turn
off gas supply at the appliance service valve befor e
starting installation, and perform Gas Leak Test
after completion of installation.

3. Always install sediment trap in gas supply line to
prevent contamination of gas control.

Meter and service must be large enough to handle all the
burners being installed plus any other connected load.
When gas piping is not included in the layout drawing, the
local gas supplier will usually help in planning the gas
piping.

 Supp ort all gas piping with suitable suspension

materials and in accordance with local codes

 Use wrought iron or wrought steel pipe and malleable

iron fittings. All pipe and fittings should be new and
free from defects. Ream the pipe ends and tubing
ends to remove obstructions and burs.

 Use LP-gas resistant joint compound on all threads.

Apply only to male end of piping.

Check all piping, fittings and connections for leaks before
placing heating equipment into service. Use only soap and
water solution for checking for gas leaks, NEVER use and
open flame.

GAS LINE INSTALLATION

In industrial installations where the natural gas pressure at
the meter is available at higher pressure than the standard
7" TO 14" W.C., it may be possible to cut down on gas
piping costs (when local codes and the Fire Marshal
approve) by running high pressure gas lines inside the
building or on the outside of the building. In no case should
the pressure exceed 10% of the service supply pressure.
When using a high pressure gas distribution system each
heating zone should be equipped with a pounds to inches
service regulator with soft seat, positive 100% lock-up.

Allowing high gas pressure on the downstream side of the
regulator will damage the control valve in the gas train. The
outlet pressure of the service regulators should be set at 7"
W.C. for natural gas and 11" W.C. for LP gases/propane
gases. If it is not practical to regulate in "zones", each
burner may be equipped with its own regulator.

To meet the requirements of 100% positive lock-up and
internal relief vent must be piped to the outside of the
building. It is recommended that an intermediate service
regulator, such as a Maxitrol 325 Series or approved equal
be used.

The typical discharge pressure on the down stream side of
the gas meter furnished by the gas company is usually 5
P.S.I.G. while the discharge pressure of the regulator on
the propane tank is usually set at 15 P.S.I.G.

Proper sizing of low and high pressure piping distribution
systems for natural gas should be made in accordance
with the National Fuel Gas Code, ANSI Z223.1 (current
standard) NFPA No. 54. Consult the supplier of the
propane tank and vaporizing system for the sizing of the
piping system for LP gas pipe work.

When leak testing the gas piping system, the Serengeti-

™

burners must be isolated from the gas piping system.

IR
High-pressure compressed air used in the leak test will
damage the control valve in the burner gas train, which will
result in unsafe operation of the burner(s). For proper and
safe test procedures, observe the provisions of Part #4, of
the National Fuel Gas Code, ANSI Z223.1 (current
standard) - Inspection, Testing and Purging or refer to
equivalent local. In Canadian see gas code CAN/CGA­B149.1- M91.

NOTE: It is important that the entire system, up to the
burner gas connection, be checked for leaks, prior to start
up.

GAS PIPE SIZING CHART

NATURAL GAS

Pipe
Size

1-¼” 848 600 517 427 380 310 268 1-¼” 2205 1039 834 724 630 511 439
1-½” 1316 931 801 661 588 480 416 1-½” 3307 1559 1275 1086 976 787 665

20’ 40’ 60’ 80’ 100’ 150’ 200’

½” 120 82 66 57 50 40 35 ½” 275 129 103 89 78 63 54
¾” 250 170 138 118 103 84 72 ¾” 567 267 217 185 162 132 112

1” 465 320 260 220 195 160 135 1” 1071 504 409 346 307 252 209

½” W.C. P.D. WITH 7.0” SUPPLY PRESSURE

Total Length of Pipe (feet) Pipe

PIPE CAPACITY - MBTU/HR

Size

20’ 40’ 60’ 80’ 100’ 150’ 200’

½” W.C. P.D. WITH 11.0” SUPPLY PRESSURE

LP / PROPANE GAS

Total Length of Pipe (feet)

PIPE CAPACITY - MBTU/HR

Combustion Research Corporation Page 11