SunStar B59715 User Manual

OWNER / INSTALLER: For your safety this manual must be carefully and thoroughly read and
understood before installing, operating or servicing this heater.

SIS SERIES:

(50, 75, 100, 125, 150, 175) – N5/L5

SIU SERIES:

(50, 75, 100, 125, 150, 175) – N5/L5

!INSTALLER: This manual is the property of the owner. Please present this manual to the
owner when you leave the job site.

▲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.

IF YOU SMELL GAS:

FOR YOUR SAFETY

! DO NOT try to light any appliance.
! DO NOT touch any electrical switch; DO NOT use any

telephone in your building.

! IMMEDIATELY call your gas supplier from a neighbor's

telephone. Follow the gas supplier's instructions. If you
cannot reach your gas supplier, call the fire department.

DO NOT store or use gasoline or other
flammable vapors and liquids in the vicinity of

this or any other appliance.

INSTALLATION AND OPERATION INSTRUCTIONS

INFRARED RADIANT TUBE HEATER

Single Stage Pull Through System (Negative Pressure)

Models:

!IMPORTANT: SAVE THIS MANUAL FOR FUTURE REFERENCE.

Post Office Box 36271 (28236) • 306 West Tremont Avenue (28203) • Charlotte, North Carolina

Phone [phone] • Fax [phone] • www.sunstarheaters.com • email: [e-mail]

SUNSTAR HEATING PRODUCTS, INC.

Form 43343310

Dec 2017

TABLE OF CONTENTS

SECTION DESCRIPTION PAGE

1.0) Safety ................................................................................................................................................... 2

2.0) Installer Responsibility ...................................................................................................................... 2

3.0) General Information ........................................................................................................................... 2

4.0) Minimum Clearances to Combustibles ........................................................................................... 4

5.0) Specifications...................................................................................................................................... 5

6.0) Packing List ......................................................................................................................................... 5

6.1) Accessory Packages .......................................................................................................................... 8

7.0) Typical Layouts ................................................................................................................................. 10

8.0) Dimensions – SIS Series ................................................................................................................. 11

8.1) Dimensions – SIU Series ................................................................................................................. 12

8.2) Heater Assembly / Joining of Tube Sections ............................................................................... 13

9.0) Typical Suspension Methods .......................................................................................................... 15

9.1) Angle Mounting of Heaters ............................................................................................................. 16

10.0) Assembly of Tube Sections ............................................................................................................. 16

10.1) Assembly of Extension Sections .................................................................................................... 17

10.2) Adding Reflectors ............................................................................................................................. 19

10.3) Adding Optional 90º Elbow (SIS Only) ........................................................................................... 20

10.4) Adding Optional Corner Reflector (SIS Only) ................................................................................ 20

10.5) Adding 180º U-Bend (SIU Only) ...................................................................................................... 21

10.6) Adding Optional U-Bend Reflector (SIU Only) ............................................................................... 21

11.0) Attaching Control Box Assembly .................................................................................................... 22

12.0) Attaching Draft Inducer Assembly ................................................................................................. 23

13.0) Multiple Hanging & Draft Inducer Positions ................................................................................ 24

14.0) Gas Connections and Regulations ................................................................................................. 25

15.0) Instructions for Pressure Test Gauge Connection ....................................................................... 27

16.0) Electrical Connections ..................................................................................................................... 28

16.1) Single Stage (N5/L5) – Internal And Thermostat Connections ................................................ 28

17.0) Venting ............................................................................................................................................... 31

18.0) Air for Combustion ........................................................................................................................... 35

18.1) Direct Outside Air for Combustion ................................................................................................. 35

19.0) Lighting and Shutdown Instructions .............................................................................................. 37

20.0) Sequence of Operation – Single Stage (N5/L5) .......................................................................... 37

21.0) Cleaning and Annual Maintenance ............................................................................................... 38

22.0) Troubleshooting Guide – Single Stage (N5/L5) .......................................................................... 39

23.0) Replacing Parts ................................................................................................................................ 42

23.1) Removing Spark Electrode ............................................................................................................. 42

23.2) Removing Main Burner and Gas Valve ......................................................................................... 43

23.3) Air Switch Pressure Check .............................................................................................................. 44

23.4) Ignition System Checks ................................................................................................................... 44

23.5) Motor and Blower Wheel Check ..................................................................................................... 45

24.0) Installation Data ............................................................................................................................... 45

25.0) Replacement Parts Guide ............................................................................................................... 46

26.0) Warnings Card .................................................................................................................................. 51

This heater complies with ANSI Z83.20 (current standard) and CSA 2.34. Copies of the National Fuel Gas Code (ANSI
Z223.1-latest edition) are available from the CSA at 8501 East Pleasant Valley Road, Cleveland, Ohio 44131 or 55 Scarsdale
Road, Don Mills, Ontario M3B 2R3. All NFPA codes are available from the National Fire Protection Association, Batterymarch
Park, Quincy, Massachusetts 02269.

Form 43343310
Dec 2017 -1-

1.0) SAFETY

Warning instructions must be followed to prevent or avoid hazards which
may cause serious injury, property damage or death.

Caution instructions must be followed to prevent incorrect operation or
installation of the heater which may cause minor injury or property
damage.

This heater is a self-contained infrared radiant tube heater. Safety information required during installation and
operation of this heater is provided in this manual and the labels on the product. The installation, service and
maintenance of this heater must be performed by a contractor qualified in the installation and service of gas
fired heating equipment.

All personnel in contact with the heater must read and understand all safety information, instructions and labels
before operation. The following symbols will be used in this manual to indicate important safety information.

2.0) INSTALLER RESPONSIBILITY

The installer is responsible for the following:

 The heater and venting, as well as electrical and gas supplies must be installed in accordance with these

installation instructions and any applicable codes and regulations.

 Every heater shall be located with respect to building construction and other equipment so as to permit

access to the heater.

 Each installer must follow the clearances to combustible materials for the heaters.
 Install the heater so that the supports and hangers are correctly spaced in accordance with these

instructions. The heater must be supported by materials having a working load limit of at least 115lbs.

 Supply the owner with a copy of these Installation and Operation Instructions.
 Where unvented heaters are used, gravity or mechanical means shall be provided to supply and exhaust at

least 4 CFM per 1,000 Btu/hr input of installed heaters.

 Never use the heater as a support for a ladder or other access equipment. Do not hang anyth ing from the

heater.

 Supply all installation materials necessary that are not included with the heater.
 Check the nameplate to make sure that the burner is correct for the gas type in the building and the

installation altitude.

3.0) GENERAL INFORMATION

This heater is a self-contained infrared radiant tube heater for use in locations where flammable gases or vapors
are not generally present (as defined by OSHA acceptable limits) and is intended for the heating of
nonresidential spaces.

INSTALLATION REQUIREMENTS
The installation must conform to local building codes or in the absence of local codes, with the National Fuel Gas
Code ANSI Z223.1/NFPA54 or the Natural Gas and Propane Installation Code CSA B149.1. Heaters shall be
installed by a licensed contractor or licensed installer. Clearances to combustibles as outlined in this manual
should always be observed. In areas used for storage of combustible materials where they may be stacked
below the heater, NFPA54 requires that the installer must post signs that will “specify the maximum permissible
stacking height to maintain the required clearances from the heater to combustibles.”

Every heater shall be located with respect to building construction and other equipment so as to permit access
to the heater. Each installer shall use quality installation practices when locating the heater and must give
consideration to clearances to combustible materials, vehicles parked below, lights, overhead doors, storage
areas with stacked materials, sprinkler heads, gas and electrical lines and any other possible obstructions or
hazards. Consideration also must be given to service accessibility.

The heater, when installed in aircraft hangars and public garages, must be installed in accordance with
ANSI/NFPA 409-latest edition (Standard for Aircraft Hangars), ANSI/NFPA 88a-latest edition (Standard for
Parking Structures), and ANSI/NFPA 88b-latest edition (Standard for Repair Garages) with the following
clearances:

-2- Dec 2017

Form 43343310

a. At least 10 feet above the upper surfaces of wings or engine enclosures of the highest aircraft that may be

(FOR CANADA ONLY)

a. Installation of this appliance is to be in accordance with latest edition of CSA B149.1 (Natural Gas and

Propane Installation Code).

b. For installation in public garages or aircraft hangars, the minimum clearances from the bottom of the

infrared heater to the upper surface of the highest aircraft or vehicle shall be 50 percent greater than the
certified minimum clearance, but the clearance shall not be less than 8 feet.

This product can expose you to chemicals including ceramic fibers, which
are known to the State of California to cause cancer, and carbon monoxide,
which is known to the State of California to cause birth defects or other
reproductive harm. For more information go to www.p65warnings.ca.gov.

housed in the hangar and at least 8 feet above the floor in shops, offices, and other sections of hangars
communicating with aircraft storage or service areas.

b. At least 8 feet above the floor in public garages. ▲WARNING: Minimum clearances marked on the heater

must be maintained from vehicles parked below the heater.

Although these heaters may be used in many applications other than space heating (e.g., process heating),
SunStar will not recognize the warranty for any use other than space heating.

For indoor installation only. Not for use in residential dwellings.

This heater is for Indoor Installation and Covered Patio Installation only and can be used in either Vented or
Unvented mode. The term Unvented actually means Indirect Vented. While the products of combustion are
expelled into the building, national codes require ventilation in the building to dilute these products of
combustion. This ventilation may be provided by gravity or mechanical means.

This heater is not an explosion proof heater. Where the possibility of exposure to volatile and low flash point
materials exists, it could result in property damage or death. This heater must not be installed in a spray booth
where the heater can operate during the spraying process. Consult your local fire marshal or insurance company.

SIS Series Only: Since straight tube heaters are always hotter at the control end than at the flue terminal end,
always observe the minimum recommended mounting heights shown on the specification sheets in Section 5.0)
of this manual. Use U-tube configuration instead of straight tubes for spot or area heating (e.g., where a single
heater is utilized for space heating).

High Altitude:
Appliances are supplied as standard for altitudes of O to 2,000 feet (0-610 m). High-altitude ratings are obtained
by a change in the orifice size. When ordered for high altitude installations, burners are supplied by the factory
ready for high altitude installation. Check the nameplate for altitude before proceeding with the installation. In
Canada the adjustment for altitude is made in accordance with Standard CGA 2.17, Gas-Fired Appliances for Use
at High Altitudes.

Form 43343310
Dec 2017 -3-

4.0) MINIMUM CLEARANCES TO COMBUSTIBLES

MINIMUM CLEARANCES TO COMBUSTIBLES

Model No.

Mounted Horizontally

Angle Mounted at

45º

Sides

Ceiling*

Below

Ends

45º Front

45º Rear

SIS/SIU 50

24”

6”

40”

15”

40”

12”

SIS/SIU 75

24”

6”

60”

15”

52”

12”

SIS/SIU 100

28”

6”

76” **

15”

60”

12”

SIS/SIU 125

32”

6”

82” **

20”

66”

12”

SIS/SIU 150

36”

6”

87” **

20”

70”

12”

SIS/SIU 175

42”

6”

93” **

20”

77”

12”

Install the warnings card (ordered separately) and complete the blank spaces using the clearances from
combustibles table below. See Section 27 for a printed copy of the warnings card.

Minimum clearances to combustibles shall be measured from the outer surfaces as shown in the following
diagram:

* When used indirect vented, minimum clearance for CEILING must be: 12” for SIS/SIU 50-75 and 18” for
SIS/SIU 100-175. If optional corner and U-bend reflectors are not used, the clearance must be 18”.

** Maximum clearance below reduces by 50% once you are 25 ft. downstream from the burner box.

▲WARNING: Certain materials or objects, when stored under the heater, will be subjected to radiant heat and
could be seriously damaged. Observe the Minimum Clearances to Combustibles listed in the manual and on the
heater at all times.

NOTE:

1. The clearances specified above must be maintained to combustibles and other materials that may be
damaged by temperatures 90ºF above ambient temperature. Clearances to combustibles are posted on the
control box. In areas used for storage of combustible materials where they may be stacked below the heater,

NFPA54 requires that the installer must post signs that will “specify the maximum permissible stacking height
to maintain the required clearances from the heater to combustibles.” SunStar recommends posting these signs

adjacent to the heater thermostat or other suitable location that will provide enhanced visibility.

2. The stated clearance to combustibles represents a surface temperature of 90 ºF (32 ºC) above room
temperature. Building materials with a low heat tolerance (such as plastics, vinyle 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.

Form 43343310

-4- Dec 2017

5.0) SPECIFICATIONS

Model No.

Btu/hr

Input

Flue Restrictor Plate

I.D. & Part #

Orifice Size

Minimum *

Mounting Height

Natural Gas

Propane Gas

@

Horizontal

@

45º Angle

SIS/SIU 50

50,000

1-1/8”

#42741030

3.3mm

(0.130)

#46

(0.081)

11 ft.

10 ft.

SIS/SIU 75

75,000

1-7/16”

#42741010

#20

(0.161)

#39

(0.099)

13 ft.

12 ft.

SIS/SIU 100

100,000

1-5/8”

#42741060

#14

(0.182)

#33

(0.113)

13 ft.

12 ft.

SIS/SIU 125

125,000

1-7/8”

#42741080

#5

(0.206)

#30

(0.129)

14 ft.

13 ft.

SIS/SIU 150

150,000

2-1/32”

#42741090

5.7mm

(0.224)

#28

(0.140)

15 ft.

14 ft.

SIS/SIU 175

175,000

2-1/4”

#42741100

“C”

(0.242)

3.8mm

(0.150)

15 ft.

14 ft.

Control Option
Suffix

Gas Type

Description

N5

Natural

Single Stage Gas Valve – Single Stage Input

L5

Propane

Single Stage Gas Valve – Single Stage Input

Type

Gas

Gas Pipe

Connection1

Tube

Diameter

Flue

Connection2

Fresh Air

Connection

Electrical

Supply

Current

Rating

Natural

or Propane

½” MPT

(Male)

4”

4” Round

6” Round

120 Volt, 60Hz,

1 Phase

2.6 Amp

Module Electrical Rating:

Ignition System (direct spark):

Fuse : 2 Amp 250V (for 24V Circuit) Input Power
Input-Control: 18-30VAC 60 Hz (class 2 transformer)
Flame Sensitivity: 0.7 uA (microamps) minimum

30 second pre-purge period
21 second trial for ignition period
Single trial for ignition (local sense)

Part Description QTY

Control Box Assembly .............................................................................................................................. 1

Draft Inducer & Junction Box Assembly ................................................................................................ 1

Flue Restrictor Plate (See Section 5.0) for plate I.D. and part no.) ................................................... 1

4” Starting Collar (#40504020) ........................................................................................................... 1

Control Fastener Kit (#42907110) ....................................................................................................... 1

Containing: #8-32 Screws & Nuts (#02166010 & #02127030) .......................................... 2

¼ - 20 Locknuts (#02167010) .............................................................................. 6

Tube Flange Gasket (#42921000) ........................................................................ 2

Draft Inducer Flange (#44015251) ...................................................................................................... 1

Installation & Operation Instructions (#43343310) .......................................................................... 1

Gas connector, 5/8” OD x 36” (#30302360) – US only ..................................................................... 1

NATURAL GAS

PROPANE GAS

MODEL NO. PART NO.

MODEL NO. PART NO.

SIS/U 50-N5 .............#43502030

SIS/U 50-L5 ............. #43502040

SIS/U 75-N5 .............#43502070

SIS/U 75-L5 ............. #43502080

SIS/U 100-N5...........#43503050

SIS/U 100-L5 .......... #43502060

SIS/U 125-N5...........#43503110

SIS/U 125-L5 .......... #43503120

SIS/U 150-N5...........#43503170

SIS/U 150-L5 .......... #43503180

SIS/U 175-N5...........#43503210

SIS/U 175-L5 .......... #43503220

* MOUNT HEATERS AS HIGH AS POSSIBLE. Minimums are shown as a guideline for human comfort and uniform
energy distribution for complete building heating applications. Consult your SunStar representative for the
particulars of your installation requirements.

Model Identification:

6.0) PACKING LIST

A. SIS/SIU Control/Draft Inducer Package

CONTROL/DRAFT INDUCER PACKAGE NUMBERS

Form 43343310
Dec 2017 -5-

B. SIS Body Package Descriptions

System Lengths

15 Ft.

System

20 Ft.

System

30 Ft.

System

40 Ft.

System

50 Ft.

System

SIS 50-175 Body Packages – Aluminized/Hot Rolled

15 Ft. Pkg.
44134000

20 Ft. Pkg.
44135000

30 Ft. Pkg.
44136000

40 Ft. Pkg.
44137000

50 Ft. Pkg.
44138000

Part #

Each Body Package Includes:

Qty.

Qty.

Qty.

Qty.

Qty.

42912180

10 Ft. Tube with 12 Hole Flange (Aluminized)

1 1 1 1 1

41932101

10 Ft. Tube less Flanges (Hot Rolled)

- 1 2 3 4

41932051

5 Ft. Tube less Flanges (Hot Rolled)

1 - - - -

43319100

Reflector, 9’ 11½”

1 2 3 4 5

43319050

Reflector, 4’ 11½”

1 - - - -

30462980

Tube Coupling

1 1 2 3 4

43318000

Tube Hanger/Support Bracket, 13”

2 2 3 4 5

43980010

Wire Hanger

2 2 3 4 5

Body Fastener Kit (included in body packages)

42907190

42907190

42907200

42907210

42907220

42873000

U-Bolt 2 2 3 4

5

02127110

Hex Nut, 5/16-18

5 5 6 8 10

02189020

HWHSM Screw, #10-16 x ½” TEKS

8 8 10

14

18

System Lengths

20 Ft.

System

30 Ft.

System

40 Ft.

System

50 Ft.

System

SIU 50-175 Body Packages – Aluminized/Hot Rolled

20 Ft. Pkg.
44135000

30 Ft. Pkg.
44136010

40 Ft. Pkg.
44137000

50 Ft. Pkg.
44138010

Part #

Each Body Package Includes:

Qty.

Qty.

Qty.

Qty.

42912180

10 Ft. Tube with 12 Hole Flange (Aluminized)

1 1 1

1

41932101

10 Ft. Tube less Flanges (Hot Rolled)

1 1 3

3

41932051

5 Ft. Tube less Flanges (Hot Rolled)

- 2 -

2

43319100

Reflector, 9’ 11½”

2 2 4

4

43319050

Reflector, 4’ 11½”

- 2 -

2

30462980

Tube Coupling

1 3 3

5

43318000

Tube Hanger/Support Bracket, 13”

2 4 4

6

43980010

Wire Hanger

2 4 4

6

Body Fastener Kit (included in body packages)

42907190

42907200

42907210

42907220

42873000

U-Bolt 2 4 4 5

02127110

Hex Nut, 5/16-18

5 8 8

10

02189020

HWHSM Screw, #10-16 x ½” TEKS

8

14

14

18

U-Bend package

43208020

43208020

43208020

43208020

42913020

U-Bend 1 1 1 1

43318500

31” Tube Support/Hanger Bracket

1 1 1

1

30462980

Tube Coupling

1 1 1

1

02189020

HWHSM Screw, #10-16 x ½” TEKS

2 2 2

2

(Package Part Number is indicated on the outside of each corresponding carton.)

C. SIU Body Package Descriptions

(Package Part Number is indicated on the outside of each corresponding carton.)

-6- Dec 2017

Form 43343310

D. “TOUGH GUY” SIS Body Package Descriptions

System Lengths

15 Ft.

System

20 Ft.

System

30 Ft.

System

40 Ft.

System

50 Ft.

System

SIS 50-175 Body Packages – Aluminized

15 Ft. Pkg.
44134010

20 Ft. Pkg.
44135020

30 Ft. Pkg.
44136020

40 Ft. Pkg.
44137040

50 Ft. Pkg.
44138060

Part #

Each Body Package Includes:

Qty.

Qty.

Qty.

Qty.

Qty.

42912180

10 Ft. Tube with 12 Hole Flange (Aluminized)

1 1 1 1 1

41932100

10 Ft. Tube less Flanges (Aluminized)

- 1 2 3 4

41932050

5 Ft. Tube less Flanges (Aluminized)

1 - - - -

43319100

Reflector, 9’ 11½”

1 2 3 4 5

43319050

Reflector, 4’ 11½”

1 - - - -

30462980

Tube Coupling

1 1 2 3 4

43318000

Tube Hanger/Support Bracket, 13”

2 2 3 4 5

43980010

Wire Hanger

2 2 3 4 5

Body Fastener Kit (included in body packages)

42907190

42907190

42907200

42907210

42907220

42873000

U-Bolt 2 2 3 4

5

02127110

Hex Nut, 5/16-18

5 5 6 8 10

02189020

HWHSM Screw, #10-16 x ½” TEKS

8 8 10

14

18

System Lengths

20 Ft.

System

30 Ft.

System

40 Ft.

System

50 Ft.

System

SIU 50-175 Body Packages – Aluminized

20 Ft. Pkg.
44135020

30 Ft. Pkg.
44136030

40 Ft. Pkg.
44137040

50 Ft. Pkg.
44138070

Part #

Each Body Package Includes:

Qty.

Qty.

Qty.

Qty.

42912180

10 Ft. Tube with 12 Hole Flange (Aluminized)

1 1 1

1

41932100

10 Ft. Tube less Flanges (Aluminized)

1 1 3

3

41932050

5 Ft. Tube less Flanges (Aluminized)

- 2 -

2

43319100

Reflector, 9’ 11½”

2 2 4

4

43319050

Reflector, 4’ 11½”

- 2 -

2

30462980

Tube Coupling

1 3 3

5

43318000

Tube Hanger/Support Bracket, 13”

2 4 4

6

43980010

Wire Hanger

2 4 4

6

Body Fastener Kit (included in body packages)

42907190

42907200

42907210

42907220

42873000

U-Bolt 2 4 4 5

02127110

Hex Nut, 5/16-18

5 8 8

10

02189020

HWHSM Screw, #10-16 x ½” TEKS

8

14

14

18

U-Bend package

43208020

43208020

43208020

43208020

42913020

U-Bend 1 1 1 1

43318500

31” Tube Support/Hanger Bracket

1 1 1

1

30462980

Tube Coupling

1 1 1

1

02189020

HWHSM Screw, #10-16 x ½” TEKS

2 2 2

2

(Package Part Number is indicated on the outside of each corresponding carton.)

E. “TOUGH GUY” SIU Body Package Descriptions

(Package Part Number is indicated on the outside of each corresponding carton.)

Form 43343310
Dec 2017 -7-

6.1) ACCESSORY PACKAGES

A. End Reflector Accessory Package, Part

#43341010

(1 pkg. per SIS Series or 2 pkgs. per SIU Series)

Contains:

End Reflector, #43320000……QTY–2
Speed Clips, #02266010……QTY–4

B. Elbow Accessory Package, Part #43208010

(Option for SIS Series Only)

Contains:

Elbow, #43175000……QTY–1
#10-16 x ½ Self-Drilling Screws, #02189020……QTY–2
Tube Coupling, #30462980……QTY–1

C. Corner Reflector Accessory Package, Part

#43342000

(Option for SIS Series Only)

Contains:

Corner Reflector Assembly, #43345000……QTY–1
Speed Clips, #02266010……QTY–4

D. U-Bend Package, Part #43208020

(Option for SIU Series Only)

Contains:

U-Bend, #42913020……QTY–1
#10-16 x ½ Self-Drilling Screws, #02189020……QTY–2

Tube Coupling, #30462980……QTY–1
31” Tube Support/Hanger Bracket,
#43318500……QTY–1

E. U-Bend Reflector Package, Part #43488000

(Option for SIU Series Only)

Contains:

U-Bend Reflector, #43490000……QTY–1
U-Bend End Reflector, #43490050……QTY–1
Speed Clips, #02266010……QTY–11
#10-16 x ½ Self-Drilling Screws, #02189020……QTY–4
Installation Form, #43489000……QTY–1

-8- Dec 2017

Form 43343310

F. 31” Hanger/Tube Support, Part #43318500

(Option for Angle Mounting of SIU Series)

G. Exhaust Hood Package, Part #42924000

Contains:

Exhaust Hood Assembly, #42925540……QTY–1
#8-18 x ½ Self-Drilling Screws, #02189030……QTY–2

Form 43343310
Dec 2017 -9-

7.0) TYPICAL LAYOUTS

MODEL

EMITTER LENGTH

MODEL

EMITTER LENGTH

Min.

Max.

Min.

Max.

SIS 50

15 Ft.

30 Ft.

SIU 50

20 Ft.

30 Ft.

SIS 75

20 Ft.

30 Ft.

SIU 75

20 Ft.

30 Ft.

SIS 100

30 Ft.

40 Ft.

SIU 100

30 Ft.

40 Ft.

SIS 125

30 Ft.

50 Ft.

SIU 125

30 Ft.

50 Ft.

SIS 150

40 Ft.

50 Ft.

SIU 150

40 Ft.

50 Ft.

SIS 175

40 Ft.

50 Ft.

SIU 175

40 Ft.

50 Ft.

NOTES:

1. In all configurations, the control unit must be connected directly to the 24-hole flange of the 10 ft.

2. Joining of two 90º elbows directly together to form a “Z” shape IS NOT permitted.

3. Any configuration of components not shown in the illustrations may be used except as noted in 1 and 2

aluminized steel start/end body section.

above.

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Form 43343310

8.0) DIMENSIONS – SIS SERIES

Typical Dimensions Up to 50 Ft. Shown.

Form 43343310
Dec 2017 -11-

8.1) DIMENSIONS – SIU SERIES

Typical Dimensions Up to 50 Ft. Shown.

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Form 43343310

8.2) HEATER ASSEMBLY / JOINING OF TUBE SECTIONS

Form 43343310
Dec 2017 -13-

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Form 43343310

9.0) TYPICAL SUSPENSION METHODS

Various means of suspending the heater can be used. See the following drawings for typical examples.

1. Use only noncombustible materials for suspending hangers and brackets.

2. A minimum No. 2 chain with a working load limit of 115 lbs. is required.

3. Turnbuckles can be used with chains to allow leveling of the heater. All “S” hooks and eye bolts must be

manually crimped closed by the installer.

4. When using rigid means for heater suspension (rod, flat bar, etc.) provide sufficient lengths or swing joints to

compensate for expansion. See Figures b and c.

5. Heaters subject to vibration must be provided with vibration isolating hangers.

6. Heaters must not be supported by gas or electric supply lines and must be suspended from a permanent

structure with adequate load capacity.

SunStar recommends that the body sections be suspended using chains with turnbuckles. This will allow slight
adjustments after assembly and heater expansion/ contraction during operation.

If a “trapeze” method is used for tube support/hanger brackets (shown below), the minimum chain length for the
two connecting chains is 36” to minimize any vibration that might be generated by the draft inducer assembly. If
these chains must be less than 36”, then do not use the trapeze method and, instead, use individual chains on

each tube support/hanger bracket.

Form 43343310
Dec 2017 -15-