Seeley ATH15ST, ATH20ST, ATH20UT, ATH25UT, ATH30UT Installation, Operation & Service Manual

WARNING

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

Installation must be done by a registered installer/
contractor qualified in the installation and service
of gas-fired heating equipment or your gas supplier.

Installer

Please take the 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 service technician with necessary information.

AIRA ATH

ATH15UT

ATH15ST

ATH30DL

ATH20UT

ATH20ST

ATH40DL

ATH25UT

ATH25ST

ATH50DL

ATH30UT

ATH30ST

ATH60DL

ATH35UT

ATH35ST

ATH70DL

ATH40UT

ATH40ST

ATH45UT

ATH45ST

ATH50UT

ATH50ST

FOR YOUR SAFETY

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.

Extinguish any open flame.

6.

Leave the building.

7.

Immediately call your local gas
supplier after leaving the building.

Follow the gas supplier’s

instructions.

8.

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

WARNING

Fire Hazard

Keep all flammable objects, liquids and
vapors the minimum required clear­ances to combustibles away from
heater.

Some objects will catch fire or explode
when placed close to heater.

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

Vacuum Assisted

Linear, Double Linear,

U-Tube, and Multi-Burner

Gas Fired Heating Systems

Installation, Operation &

Service Manual

© 2014 Roberts-Gordon LLC

Aira Pty Ltd

144 Colchester Road

Kilsyth, VIC 3137

Telephone: [phone]
Fax: [phone]
Email: [e-mail]

www.aira.com.au

AH170106AU Orig 09/14

TABLE OF CONTENTS

All rights reserved. No part of this work covered by the copyrights herein 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 the
written permission of Roberts-Gordon Europe Limited.

© 2014 Roberts-Gordon Europe Limited

SECTION 1: Heater Safety............................................ 2

1.1 Manpower Requirements.................................... 2

1.2 Safety Labels and Their Placement .................... 2

SECTION 2: Installer Responsibility ........................... 4

2.1 Low Level User Instructions ............................... 4

2.2 Corrosive Chemicals .......................................... 4

2.3 National Standards and Applicable Codes ......... 4

SECTION 3: Clearances to Combustibles .................. 5

3.1 Required Clearances to Combustibles............... 5

3.2 Clearance Data - Linear and Double Linear ....... 6

3.3 Clearance Data -U Tube ........................................... 8

SECTION 4: Major Component Descriptions ............10

SECTION 5: General Suspension Details .................. 11

SECTION 6: Linear & Double Linear Heater

Installation ............................................. 13

6.1 Linear Standard Parts List ................................ 13

6.2 Double Linear Standard Parts List ....................16

SECTION 7: U-Tube Heater Installation .................... 25

7.1 U-Tube Standard Parts List ............................... 25

SECTION 8: Multiburner Configuration &

Installation ............................................. 34

8.1 Initial Assembly ................................................ 34

SECTION 9: Burner & Fan Installation ...................... 36

9.3 Linear & U-Tube Fan Installation ...................... 37

SECTION 10: Optional Heater Accessories .............. 40

10.1 Reflector Side Extension Installation .............. 41

10.2 U-Tube Cover Installation ............................... 42

10.3 Decorative Grille Installation ........................... 43

10.4 Protective Grille Installation ............................ 44

10.5 Sports Hall Guard Installation ........................ 45

10.6 Undershield Installation .................................. 46

10.7 Wall Mounting ................................................. 47

SECTION 11: Venting .................................................. 49

11.1 General Venting Requirements ....................... 49

11.2 Ventilation Requirements ................................ 49

11.3 Outside Combustion Air Supply ...................... 50

11.4 Common Duct ................................................. 51

SECTION 12: Gas Piping ............................................ 52

SECTION 13: Wiring.................................................... 54

13.1 Typical External Wiring Diagram

(Linear or U-Tube) .............................................. 54

13.2 Typical External Wiring Diagram

(Double Linear Option 1) ................................ 54

13.3 Typical External Wiring Diagram

(Double Linear Option 2) ................................ 55

13.4 Typical External Wiring Diagram

(Multiburner) ................................................... 55

13.5 Internal Wiring Diagram.................................. 56

SECTION 14: Operation .............................................. 57

14.1 Heater Lockout Indication (Optional) .............. 57

14.2 Testing .................................................................. 58

14.3 Commissioning (Multiburner) ......................... 58

System Checks ............................................... 58

14.5 User Instructions ............................................. 58

SECTION 15: Servicing Instructions ......................... 60

15.1 Annual Procedure ............................................. 60

15.2 Component Removal ...................................... 60

15.3 Maintenance Checklist ................................... 61

SECTION 16: Troubleshooting .................................. 63

16.1 Troubleshooting Flow Chart

(Linear, Double Linear and U-Tube) ................ 64

16.2 Troubleshooting Flow Chart (Multiburner) ....... 66

16.3 Manifold Gas Pressure Setting ....................... 68

SECTION 17: Replacement Parts .............................. 69

SECTION 18: Specifications ...................................... 71

18.1 Material Specifications.................................... 71

18.2 Heater Specifications...................................... 71

18.3 Venting Specifications .................................... 71

18.4 Suspension Specifications ............................. 71

18.5 Controls Specifications ................................... 71

18.6 Environment ................................................... 71

18.7 Linear Heater .................................................. 72

18.8 Double Linear Heater ..................................... 72

18.9 U-Tube Heater ................................................ 72

18.10 Burner Specifications .................................... 73

14.4

Printed in U.K.

TABLE OF FIGURES

Figure 1: Side and Back Panel Label Placement ............ 2

Figure 2: Top Panel Label Placement ............................. 3

Figure 18: Critical Hanger Placement ........................... 12

Figure 19: Linear General Assembly Overview ..............14

Figure 20: Linear Layout Overview ............................... 15

Figure 21: Double Linear General Assembly Overview 17

Figure 22: Double Linear Layout Overview ................... 18

Figure 23: U-Tube Assembly Overview ......................... 26

Figure 24: U-Tube Layout Overview .............................. 27

Figure 25: Multiburner Damper Flange Installation ....... 34

Figure 26: Typical Manifold Layout (Linear and U-Tube

Configuration) .............................................. 35

Figure 27: U-Tube (Horizontal) ...................................... 47

Figure 28: U-Tube (Angle Mounted) .............................. 48

Figure 29: Linear ........................................................... 48

Figure 30: Individual Flue Connection Detail ................ 50

Figure 31: Flue Connection Dimensions ....................... 50

Figure 32: Fresh Air Intake Spigot ................................. 51

Figure 33: Air Supply with Flue Configurations ............. 51

Figure 34: Gas Connection with Stainless Steel Flex

Connector .................................................... 53

Figure 35: Sequence of Operation Chart ...................... 57

Figure 36: Burner Cup Position ..................................... 60

Figure 37: Linear and U-Tube Specifications ................ 73

ROBERTS GORDON® equipment has been tested and CE certified as complying with the essential
requirements of the Gas Appliance Directive, the Low Voltage Directive, the Electromagnetic
Compatibility Directive and the Machinery Directive for use on natural gas and LPG when installed,
commissioned and maintained in accordance with these instructions.

These instructions refer to appliances designed to operate in the European Union.
Appliances designed for other countries (Non-European Union) are available on request.
This appliance must be installed in accordance with the local and national codes in force and used

only in a sufficiently ventilated space, as specified in these instructions.
Before installation, check that the local gas distribution systems, nature of gas and pressure, and

adjustment of the appliance are compatible.

Product Approval

1 of 73

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

Description

Part Number

Logo Label

91033207

Fan/Burner Label

91033300

Rating Plate Label

91031300-AH

SECTION 1: HEATER SAFETY

Your Safety is Important to Us!
This symbol is used throughout the manual

to notify you of possible fire, electrical or burn
hazards. Please pay special attention when
reading and following the warnings in these

sections.
Installation, service and annual inspection of heater must

be done by a registered installer/contractor qualified in
the installation and service of gas-fired heating
equipment.

Read this manual carefully before installation, operation
or service of this equipment.

This heater is designed for heating nonresidential indoor
spaces. Do not install in residential spaces. These
instructions, the layout drawing, local codes and
ordinances, and applicable standards that apply to gas
piping, electrical wiring, venting, etc., must be thoroughly
understood before proceeding with the installation.

Protective gear is to be worn during installation, operation
and service. Thin sheet metal parts, such as the reflector
portion of the heater and the various venting
components, have sharp edges. To prevent injury, the use
of work gloves is recommended. The use of gloves will
also prevent the transfer of body oils from the hands to
the surface of the reflector.

Before installation, check that the local distribution
conditions, nature of gas and pressure, and adjustment of
the appliance are compatible.

The heater must be applied and operated under the
general concepts of reasonable use and installed using
best building practices.

This equipment is not intended for use by persons
(including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the appliance by a person responsible
for their safety. Children should be supervised to ensure
that they do not play with the appliance.

For additional copies of the Installation, Operation and
Service Manual, please contact Aira.

1.1

Manpower Requirements

To prevent personal injury and damage to the heater, two
persons will be required for installation.

1.2

Safety Labels and Their Placement

Product safety signs or labels should be replaced by the
product user when they are no longer legible. Contact
Aira for obtaining replacement signs or labels. See Page
2, Figure 1 through Page 3, Figure 2.

Figure 1: Side and Back Panel Label Placement

2 of 73

Figure 2: Top Panel Label Placement

INT ERNAL WIRING DIAGRAM

brown -- 1lkout Indicator

- blue - - 2Connector

blue

PRESSURE

black

SWITCH

white

•

Y

l : =iE;:--

AUT OMA TI C CO NTR OL UNI T

EARTH STUD

iii!

GAS VALVE

purple 1- --""'""'-'

Optional Voll Free Connecter

If

any of the or ginal wire

supplied with the heater must
be replaced, it must be
replaced w th wiring material

having a temperature rating of

at least 105 °C and 600 V.

P/ N 9103 1 40 1 Rev. M

AWARNING

Fire Ha zard

Tighten end install gae hoee fittings to connect gae eupply eccortling to example below.

Gae hoee can crack when twist ed.

Gae hoee moves during normal operation.
Uee only 1000 mm long connector of 112" or 314" nominal I

□.

Failure to !allow theee Instructions can result In death , Injury or property damage.

ShuHJ!lva

\'l!rticll

(loclLD! llW lli lias Hos!r)

(asSM 'Wfll elt)

1:

-·

Description

Part Number

Gas Connection Label

91018126

Internal Wiring Label

91031401

O=

SECTION 1: HEATER SAFETY

:

°'=

O=

Top Panel

Gas Connection Label

/

Top Panel - Inside Door

Internal Wiring Label

3 of 73

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

CAUTION

Product Damage Hazard

Do not use heater in area containing
corrosive chemicals.

Refer to appropriate Material Safety Data
Sheets (MSDS).

Failure to follow these instructions can result
in product damage.

SECTION 2: INSTALLER RESPONSIBILITY

To install the heater, as well as the gas and electrical
supplies, in accordance with applicable specifications
and codes. Aira recommends the installer contact a
local Building Inspector or Fire
Marshal for guidance.

To use the information given in a layout drawing and
in the manual together with the cited codes and
regulations to perform the installation.

To install the heater in accordance with the clear­ances to combustibles.

To furnish all needed materials not furnished as
standard equipment.

To plan location of supports.
To provide access to burners for servicing on all

sides, for burner removal.
To provide the owner with a copy of this installation,

operation and service manual.
To never use heater as support for a ladder or other

access equipment and never hang or suspend any­thing from heater.

To ensure there is adequate air circulation around the
heater and to supply air for combustion, ventilation
and distribution in accordance with local codes.

To safely and adequately install heater using materi­als with a minimal working load of 33 kg.

To ensure the heater is placed in an approved
application.

2.1

Low Level User Instructions

In all situations, clearances to combustibles must be
maintained. Signs should be posted in storage areas to
specify the maximum stacking height of items placed
below heater to maintain required clearances to
combustibles. Minimum clearances must be maintained
from vehicles parked below the heater. 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.

A laminated wall tag is available for the heater as a
permanent reminder of the safety instructions and the
importance of the required clearances to combustibles.
Please contact Aira or your Aira independent distributor to
obtain the wall tag. Affix the tag by peeling off the backing
of the adhesive strips on the rear surface and position the
tag on a wall near the heater (e.g. thermostat).

A copy of the wall tag (P/N 91037912-AH) is illustrated on
the back cover. This copy of the wall tag can be affixed on
the wall near the heater. Know your model number and
installed configuration. Model number and installed
configuration are found on the burner and in the
Installation, Operation and Service Manual. Write the
largest clearance dimensions with permanent ink
according to your model number and configuration in the
open spaces on the tag.

2.2

Corrosive Chemicals

Aira cannot be responsible for ensuring that all
appropriate safety measures are undertaken prior to
installation; this is entirely the responsibility of the
installer. It is essential that the contractor, the sub­contractor, or the owner identifies the presence of
combustible materials, corrosive chemicals or
halogenated hydrocarbons* anywhere in the premises.

* Halogenated Hydrocarbons are a family of chemical
compounds characterized by the presence of halogen
elements (fluorine, chlorine, bromine, etc.). These com­pounds are frequently used in refrigerants, cleaning
agents, solvents, etc. If these compounds enter the air
supply of the burner, the lifespan of the heater compo­nents will be greatly reduced. An outside air supply must
be provided to the burners whenever the presence of
these compounds is suspected. Warranty will be invalid
if the heater is exposed to halogenated hydrocarbons.

2.3

National Standards and Applicable Codes

All appliances must be installed in accordance with the
latest revision of the applicable standards and national
codes. This refers also to the electric, gas and venting

installation. Note: Additional standards for installations in
public garages, aircraft hangars, etc. may be applicable.

4 of 73

SECTION 3: CLEARANCES TO COMBUSTIBLES

3.1

Required Clearances to Combustibles

Clearances are the required distances that combustible
objects must be away from the heater to prevent fire
hazards. Caution should be used when running the

system near combustibles. Combustibles are materials,
which may catch on fire and include common items such
as wood, paper, rubber, fabric, etc. Maintain clearances

to combustibles at all times for safety.

Clearances for all heater models are located on Page 6,
Figure 3 through Page 9, Figure 17 in this manual. Check

the clearances on each burner for the model heater being
installed to make sure the product is suitable for your
application and the clearances are maintained. Read and
follow the safety guidelines below:

Keep petrol or other combustible materials including
flammable objects, liquids, dust or vapours away from
this heater or any other appliance.

Do not spray aerosols in the vicinity of this appliance.
The stated clearances to combustibles represents a

surface temperature of 50° C (90° F) above room
temperature. Building materials with a low heat toler­ance (such as plastics, vinyl siding, canvas, tri-ply,
etc) may be subject to degradation at lower tempera-

adjacent materials are protected from degradation.
Maintain clearances from heat sensitive equipment

and workstations.
Maintain clearances from vehicles parked below the

heater.
Maintain clearances from swinging and overhead

doors, overhead cranes, vehicle lifts, partitions, stor­age racks, hoists, building construction, etc.

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

SECTION 3: CLEARANCES TO COMBUSTIBLES

Consult local Building Inspector, Fire Insurance
Carrier or other authorities for approval of proposed
installation when there is a possibility of exposure to
combustible airborne materials or vapours.

Hang heater in accordance to the minimum
suspension requirements on Page 72, Section 18.7
through Section 18.9.

If the radiant tubes must pass through the building
structure, be sure that adequate sleeving and fire
stop is installed to prevent scorching and/or fire
hazard.

5 of 73

WARNING

Fire Hazard

Keep all flammable objects, liquids and
vapors the minimum required clearances to
combustibles away from heater.

Some objects will catch fire or explode when
placed close to heater.

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

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

FIGURE 3: LINEAR & DOUBLE LINEAR, HORIZONTAL MOUNTS

A

B

D

C

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

A 150

150 150

150 150

150 200

200

B 890

970 970

1020

1170

1220

1280

1330

C 1570

1650

1650

1780

1930

1970

2010

2080

D 890

970 970

1020

1170

1220

1280

1330

FIGURE 4: LINEAR & DOUBLE LINEAR, ONE SIDE REFLECTOR

A

B

D

C

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

A 150

150

150

150

150

150

200

200 B

230

230

230

230

230

230

230

230

C 1580

1760

1760

1930

2090

2130

2160

2240

D 1200

1380

1380

1500

1660

1710

1760

1860

FIGURE 5: LINEAR & DOUBLE LINEAR, TWO SIDE REFLECTORS

A

B

D

C

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

A 150

150

150

150

150

150

200

200

B 590

640

640

690

820

860

890

1020

C 1660

1810

1810

1960

2110

2160

2210

2320

D 590

640

640

690

820

860

890

1020

FIGURE 6: LINEAR & DOUBLE LINEAR, 45° MOUNT

A

C

B

D

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

A 200

200

200

250

250

275

300

300

B 200

200

200

200

200

200

200

200

C 1500

1660

1660

1860

1960

2030

2110

2160

D 1370

1520

1520

1630

1750

1820

1880

2000

3.2

Clearance Data - Linear and Double Linear

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, tees, elbows and crosses.

2.

Clearances B, C and D can be reduced by 50% after 7500 mm of tubing downstream
from the burner.

3.

All measurements are in millimeters.

* ATH55ST only available in multiburner.

6 of 73

SECTION 3: CLEARANCES TO COMBUSTIBLES

FIGURE 7: LINEAR & DOUBLE LINEAR, 2 FOOT DECO GRILLE

A

C

B

D

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

A 150

150

150

150

150

150

200

200 B

890

970

970

1020

1170

1220

1280

1330

C 1570

1650

1650

1780

1930

1970

2010

2080

D 890

970

970

1020

1170

1220

1280

1330

FIGURE 8: LINEAR & DOUBLE LINEAR, PROTECTIVE GRILLE

A

C

B

D

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

A 150

150

150

150

150

150

200

200

B 890

970

970

1020

1170

1220

1280

1330

C 1570

1650

1650

1780

1930

1970

2010

2080

D 890

970

970

1020

1170

1220

1280

1330

FIGURE 9: UNDERSHIELD **

A

B

D

C

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

A 150 150

150

150

150

150 - - B

990

1020

1270

1270

1370

1400 - -

C 840 965

1120

1120

1220

1270 - -

D 990

1020

1270

1270

1370

1400 - -

FIGURE 10: LINEAR & DOUBLE LINEAR, VENTING

Model

ATH15ST

ATH30DL

ATH20ST

ATH40DL

ATH25ST

ATH50DL

ATH30ST

ATH60DL

ATH35ST

ATH70DL

ATH40ST

ATH45ST

ATH50ST

E 1000

1000

1000

1000

1000

1000

1000

1000

F 500

500

500

500

500

500

500

500

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, tees, elbows and crosses.

2.

Clearances B, C and D can be reduced by 50% after 7500 mm of tubing downstream
from the burner.

3.

All measurements are in millimeters.

** When installed in the first 6 m - Not for use on EF models.

* ATH55ST only available in multiburner.

7 of 73

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

FIGURE 11: U-TUBE, HORIZONTAL MOUNT

A

B

D

C

Model

ATH15UT ATH20UT ATH25UT ATH30UT ATH35UT ATH40UT ATH45UT ATH50UT

A 150

150

150

150

150

150

200

200 B

890

970

970

1020

1170

1220

1270

1380

C 1580

1730

1730

1910

1980

2050

2110

2210

D 760

940

940

1000

1090

1150

1200

1300

FIGURE 12: U-TUBE, ONE SIDE REFLECTOR

A

B

D

C

Model

ATH15UT ATH20UT ATH25UT ATH30UT ATH35UT ATH40UT ATH45UT ATH50UT

A 150

150

150

150

150

150

200

200 B

230

230

230

230

230

230

230

230

C 1580

1760

1760

1930

2090

2130

2160

2240

D 1200

1380

1380

1500

1660

1710

1760

1860

FIGURE 13: U-TUBE, TWO SIDE REFLECTORS

A

B

D

C

Model

ATH15UT ATH20UT ATH25UT ATH30UT ATH35UT ATH40UT ATH45UT ATH50UT

A 150

150

150

150

150

150

200

200

B 590

640

640

690

820

860

890

1020

C 1660

1810

1810

1960

2110

2160

2210

2320

D 590

640

640

690

820

860

890

1020

FIGURE 14: U-TUBE, FULL 45° MOUNT

B

A

C

D

Model

ATH15UT ATH20UT ATH25UT ATH30UT ATH35UT ATH40UT ATH45UT ATH50UT

A 200

200

200

200

200

200

200

200

B 200

200

200

200

200

200

200

200

C 1500

1650

1650

1860

1960

2040

2110

2160

D 1070

1170

1170

1320

1550

1620

1680

1780

3.3

Clearance Data -U Tube

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, tees, elbows and crosses.

2.

Clearances B, C and D can be reduced by 50% after 7500 mm of tubing downstream
from the burner.

3.

All measurements are in millimeters.

4.

Add 60 mm clearance to uncovered U-tube.

8 of 73

SECTION 3: CLEARANCES TO COMBUSTIBLES

FIGURE 15: U-TUBE, OPPOSITE 45° TILT

A

B

D

C

Model

ATH15UT ATH20UT ATH25UT ATH30UT ATH35UT ATH40UT ATH45UT ATH50UT

A 200

200

200

250

250

275

300

300

B 1370

1530

1530

1630

1780

1830

1880

1930

C 1500

1650

1650

1860

1960

2040

2110

2160

D 560

560

560

560

560

560

560

560

FIGURE 16: U-TUBE, PROTECTIVE GRILLE

A

B

D

C

Model

ATH15UT ATH20UT ATH25UT ATH30UT ATH35UT ATH40UT ATH45UT ATH50UT

A 150

150

150

150

150

150

200

200

B 890

970

970

1020

1170

1220

1270

1380

C 1580

1730

1730

1910

1980

2050

2110

2210

D 760

940

940

1000

1090

1150

1200

1300

FIGURE 17: U-TUBE, VENTING

Model

ATH15UT ATH20UT ATH25UT ATH30UT ATH35UT ATH40UT ATH45UT ATH50UT

E 1000

1000

1000

1000

1000

1000

1000

1000

F 500

500

500

500

500

500

500

500

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, tees, elbows and crosses.

2.

Clearances B, C and D can be reduced by 50% after 7500 mm of tubing downstream
from the burner.

3.

All measurements are in millimeters.

4.

Add 60 mm clearance to uncovered U-tube.

9 of 73

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 4: MAJOR COMPONENT DESCRIPTIONS

Burner (shown with Tube
Gasket)

Must be installed with the
flame observation window
facing down.

Reflector
(Aluminium or
Stainless Steel)

Alternate overlap as
shown on overview.
Minimum overlap is
160 mm.

Burner Tube

Supplied in 3,000 mm lengths.
Burner tube is always the first
tube after the burner.

Tube

Heat treated aluminised tube
supplied in 3,000 mm lengths.

Fan Tube with Internal Swirler

Supplied in 3,000 mm lengths. Fan
tube is always the last tube on the
heater where the fan is attached.

The swirler is welded to the inside

Tube and Reflector Hanger
with Clamp Package

Position this hanger no more
than 100 mm away from the
burner assembly.

Tube and Reflector Hanger

Suspend system from these
hangers.

Reflector Support Strap, Wire
Form & #8 x 3/4 (3.9 x 19mm)
Screw

of the tube end.

Coupling Assembly
with Lock

Reflector End Cap

Punch out center section to
accommodate tube.

Fan Assembly (Includes Flange)

Fan Assembly is attached to the last
section of heat exchanger tubing
(Fan Tube).

Flex Gas Line

Damper Flange Assembly

For use on Multiburner Systems.

Tee
Assembly

Fan Flange Assembly
and Screws

S-hook

Height
Adjuster

U-Tube

U-Tube
Support

Bracket

Spring
Hook

Bow
Shackle

10 of 73

SECTION 5: GENERAL SUSPENSION DETAILS

WARNING

Severe Injury Hazard

Secure burner to burner tube with bolts and
lockwashers.

Hang heater with materials with a minimum
working load of 75 lbs (33 kg).

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

WARNING

Cut/Pinch Hazard

Wear protective gear during installation,
operation and service.

Edges are sharp.
Failure to follow these instructions can result

in injury.

SECTION 5: GENERAL SUSPENSION DETAILS

To ensure your safety, and comply with the terms of the
warranty, all units must be installed in accordance with
these instructions.

The gas or the electrical supply lines must not be used to
support the heater.

Do not locate the gas or electric supply lines directly over
the path of the flue products from the heater.

The heater must be installed in a location that it is readily
accessible for servicing.

The heater must be installed in accordance with
clearances to combustibles as indicated in this manual.

The minimum and maximum gas inlet pressures must be
maintained as indicated on the rating plate. Typical
installation configurations are shown on Page 12, Figure

18.
Suspension chain is not supplied as standard equipment.
Note: Some models will receive S-hooks (P/N 91907302)

or spring hooks (P/N 91903300), rather than bow
shackles.

11 of 73

Typical Suspension Details

I-Beam

Beam

Clamp

I-Beam

Concrete

Beam

Anchor

Screw Hook

min. 10 mm

Washer

Locknut

600 mm

minimum*

10 mm

Rod

Washer

Wood

Beam

300 mm

minimum*

Bow

Shackle

Turnbuckle

(not included)

* Allows for thermal expansion of system.

Side View

Bow Shackle

Hanger

Hanger

100 mm

Max.

Front View

45° Angle

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

Figure 18: Critical Hanger Placement

Description

Part Number

Burner Tube

03051100

Bow Shackle

E0007576

Tube/Reflector Hanger

03090100

For suspension angles other than shown, additional chain supports may be required.

12 of 73

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

The figures in this section provide a general overview of
component placement in a Linear and Double Linear
system. The location of some components such as
supports and couplings is crucial for proper installation.
Assemble the heater components as shown on Page 14,
Figure 19.

For optional reflector configurations for linear heaters see
Page 6, Figure 3 through Page 7, Figure 10. Install
appropriate suspension hardware, beam clamps, chain or
rod at predetermined locations. Adjustments of chain
length will provide uniform pitch.

If any step is unclear, please contact Aira at +61 3 9839

8000.

6.1

Linear Standard Parts List

Part No.

Description

ATH15ST ATH20ST ATH25ST ATH30ST ATH35ST ATH40ST ATH45ST ATH50ST

ATH72XXXXX

Burner Assembly (Input and Fuel Varies)

1 1 1 1 1 1 1 1 07260001

Fan Package XP 1

1 1 1 1 - - - - 07260002

Fan Package XP2

- - - - 1 1 1 - 07260003

Fan Package XP 3

- - - - - - - 1 03051100

Burner Tube, 100 mm x 3048 mm

1 1 1 1 1 1 1 1 91409408

Tube, 100 mm x 3048 mm

- 1 1 2 2 2 3 3 S5127W

Fan Tube, 100 mm x 3048 mm, with 3048 mm Swirler

- 1 1 1 1 1 1 1 S5134W

Fan Tube, 100 mm x 3048 mm, with 2134 mm Swirler

1 - - - - - - - 01329600

Standard Coupling Assembly

1 2 2 3 3 3 4 4

01329700

Coupling Lock

1 2 2 3 3 3 4 4 02750303

Reflector, Aluminium, 2439 mm

3 4 4 6 6 6 7 7 027503SS

Reflector, Stainless Steel, 2439 mm (Optional)*

3 4 4 6 6 6 7 7 02750800

Reflector End Cap, Aluminium

2 2 2 2 2 2 2 2 027508SH

Reflector End Cap, Stainless (Optional)*

2 2 2 2 2 2 2 2 03090100

Tube and Reflector Hanger

3 4 4 5 5 5 6 6 01318901

Tube Clamp Package (including Nut, Washer & Bolt)

1 1 1 1 1 1 1 1 91908004

Wire Form

2 3 3 5 5 5 6 6 94320812

Screw #8 x 3/4 (3.9 mm x 19 mm), (goes with 03050000)

4 6 6 10 10 10 12 12 03050000

Reflector Support Strap

2 3 3 5 5 5 6 6 E0007576

Bow Shackle**

3 4 4 5 5 5 6 6

91107720

U-Clip Package (20 Pieces)

1 1 1 1 1 1 1 1 S7199K

Damper Flange Assembly (For use on Multiburner Systems)

1 Per Heater

* PVC coating must be removed prior to installation.
** Some models may receive S-hooks (P/N 91907302) or

spring hooks (P/N 91903300), rather than bow shackles.

13 of 73

WARNING

Cut/Pinch Hazard

Wear protective gear during installation,
operation and service.

Edges are sharp.
Failure to follow these instructions can result

in injury.

Reflector End Cap

Burner

Reflector

Tube Clamp Package

Burner Tube

Tube and Reflector Hanger

Coupling

Reflector Support

U-Clips

Fan Tube

Internal Swirler

Weld

Spot

Fan Assembly

(For Single Heater)

Damper Assembly

(Required for Multiburner)

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

Figure 19: Linear General Assembly

Overview

14 of 73

Figure 20: Linear Layout Overview

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

Model

ATH15ST

ATH20ST

ATH25ST

ATH30ST

ATH35ST

ATH40ST

ATH45ST

ATH50ST

Reflector
Overlap
(approx.)

700 mm

250 mm

250 mm

530 mm

530 mm

530 mm

330 mm

330 mm

15 of 73

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

Part No.

Description

ATH30DL ATH40DL ATH50DL ATH60DL ATH70DL

ATH72XXXXX

Burner Assembly (Input and Fuel Varies)

2 2 2 2 2 07260002

Fan Package XP2

1 1 - - - 07260003

Fan Package XP3

- - 1 1 1 03051100

Burner Tube, 100 mm x 3048 mm

2 2 2 2 2 91409408

Tube, 100 mm x 3048 mm

- 2 2 4 4 S5127W

Fan Tube, 100 mm x 3048 mm, with 3048 mm Swirler

- 2 2 2 2 S5134W

Fan Tube, 100 mm x 3048 mm, with 2134 mm Swirler

2 - - - - 01330203

Tee, 100 mm x 100 mm x 100 mm

1 1 1 1 1 01329600

Standard Coupling Assembly

4 6 6 8 8 01329700

Coupling Lock

4 6 6 8 8 02750303

Reflector, Aluminium, 2439 mm

6 8 8 12 12 027503SS

Reflector, Stainless Steel, 2439 mm (Optional)*

6 8 8 12 12 02750800

Reflector End Cap, Aluminium

4 4 4 4 4 027508SH

Reflector End Cap, Stainless (Optional)*

4 4 4 4 4

03090100

Tube and Reflector Hanger

6 8 8 10 10 01318901

Tube Clamp Package (including Nut, Washer & Bolt)

2 2 2 2 2 91908004

Wire Form

4 6 6 10 10 03050000

Reflector Support Strap

4 6 6 10 10 E0007576

Bow Shackle**

6 8 8 10 10 91107720

U-Clip Package (20 Pieces)

2 2 2 2 2 E0007582

Height Adjuster

6 8 8 10 10 94320812

Screw #8 x 3/4 (3.9 mm x 19 mm), (goes with 03050000)

8 12 12 20 20

6.2

Double Linear Standard Parts List

* PVC coating must be removed prior to installation.
**Some models may receive S-hooks (P/N 91907302) or

spring hooks (P/N 91903300), rather than bow shackles

16 of 73

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

Figure 21: Double Linear General Assembly Overview

17 of 73

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

Figure 22: Double Linear Layout Overview

Model

ATH30DL

ATH40DL

ATH50DL

ATH60DL

ATH70DL

Reflector Overlap (approx.)

700 mm

250 mm

250 mm

530 mm

530 mm

18 of 73

Note:
Tubing requires a downward
slope of 13 mm per 6000 mm
away from burner.

Offset mounting
hole must be
to the top.

Bow Shackle

Hanger

Burner Tube

Weld seam
must be to the
bottom of the tube.

2290 mm ± 250 mm

Step 6.3 Burner Tube Installation

Description

Part Number

Burner Tube

03051100

Bow Shackle

E0007576

Tube/Reflector Hanger

03090100

A

Close coupling

with tab.

Tab

Open

Closed

B

Start slide bar/coupling lock

onto coupling.

Slide Bar

Wide End

Coupling

76 mm to
101 mm

C

Insert tubes into coupling.

Orient coupling so that

the impact block is in the

2:00 or 10:00 o'clock

positions

Tube

Tube

D

Tighten coupling to join tubes.

Slide Bar

Coupling

Tube

Description

Part Number

Coupling

01329600

Slide Bar/Coupling Lock

01329700

Tube

91409408

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

Step 6.4 Coupling and Tube Assembly

19 of 73

Incorrect Slide Bar

position

Correct Slide Bar

dimensions

± 50 mm

Drive slide bar until tight.
End of slide bar should be
within tolerance listed below.

AIRA ATH INSTALLATION OPERATION AND SERVICE MANUAL

Model

Overall Tube Length (mm)

Number

of Tubes

ATH15ST

6,000

2

ATH20ST

9,000

3

ATH25ST

9,000

3

ATH30ST

12,000

4

ATH35ST

12,000

4

ATH40ST

12,000

4

ATH45ST

15,000

5

ATH50ST

15,000

5

•

Repeat Step 6.4 A - D until all tubes are assembled. See Page 20, Section 6.4.2 shown below.

Tighten slide bar as shown below.

Step 6.4.1 Coupling and Tube Assembly (Continued)

Step 6.4.2 Coupling and Tube Assembly (Continued)

20 of 73

Note: Tube clamp package should be
installed 100 mm from burner tube plate.

Other hangers do not need tube clamp
packages.

Step 6.5 Tube Clamp Package Installation

Description

Part Number

Tube Clamp Package

01318901

Tube Clamp

01396801

Bolt

97113940

Flat Washer

95211600

Nut

92113900

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

21 of 73