Roberts Gorden DAT75, DAT90, DAT115, DAT100 User Manual

WARNING

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. Leave the building.

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

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

Fire Hazard

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

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.

WARNING

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

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.

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 serviceman with necessary information.

®

DualAir

Heating and Cooling Units

Installation, Commissioning,

Operation & Service Manual

DAT75

DAT90
DAT100
DAT115

Quality in Any Language™

© Copyright 2007 Roberts-Gordon, LLC

Roberts-Gordon Europe Limited

Unit A, Kings Hill Business Park
Darlaston Road, Wednesbury
West Midlands WS10 7SH UK
Telephone: [phone]
Fax: [phone]
Service Telephone: [phone]
Service Fax: [phone]
E-mail: [e-mail]
E-mail: [e-mail]

www.rg-inc.com

P/N X527 Rev C 10/07

© 2007 Roberts-Gordon, LLC

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, LLC.

TABLE OF CONTENTS

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

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

2.1 Clearances to Combustibles ........................................2

2.2 Corrosive Chemicals.................................................... 2

2.3 National Standards and Applicable Codes .................. 2

SECTION 3: Critical Considerations ..................................... 3

3.1 Basic Information ......................................................... 3

3.2 Location and Suspension ............................................3

3.3 Minimum Required Installation Clearances ................. 3

3.4 Clearances to Combustibles ........................................3

3.5 Ventilation .................................................................... 3

3.6 Gas Supply..................................................................3

3.7 Electrical Supply..........................................................3

3.8 Flue..............................................................................3

3.9 Coil Condense Drain....................................................3

SECTION 4: Specifications ....................................................5

4.1 DAT.............................................................................. 5

4.2 General Technical Data Table .....................................6

4.3 Technical Data Table - Heater Section.........................7

4.4 DualAir

SECTION 5: Heater Installation..............................................9

5.1 General........................................................................ 9

5.2 Handling ...................................................................... 9

5.3 Shelf Mounting and Suspension.................................. 9

SECTION 6: Flue Installation ............................................... 10

6.1 Flue Installation.......................................................... 10

6.2 Type C

6.3 Type B

6.4 Converting from Top to Side Terminations for Flue

SECTION 7: Air Supply......................................................... 13

7.1 Room Sealed Installation ........................................... 13

7.2 Open Flued Installation .............................................. 13

7.3 Building Ventilation ..................................................... 13

7.4 Isolated Equipment Rooms ........................................13

SECTION 8: Optional Heater Configurations...................... 14

8.1 Distribution Duct ........................................................ 14

SECTION 9: Gas Piping........................................................15

9.1 Connections............................................................... 15

SECTION 10: Wiring and Electrical Information................. 16

10.1 Electrical Supply ...................................................... 16

10.2 Remote Control ........................................................ 16

10.3 DAT Main Circuit Board Terminal Identification........ 17

10.4 DAT Wiring Diagram................................................. 18

10.5 DAT Wiring Diagram................................................. 19

10.6 DAT Site Connections at Main Circuit Board............20

SECTION 11: Commissioning.............................................. 21

11.1 Pre-Commission Checks .......................................... 21

11.2 Gas Supply ............................................................... 21

11.3 Mechanical Checks...................................................21

11.4 Begin Commissioning...............................................21

11.5 Combustion Testing ..................................................23

11.6 Turning Off the DualAir

11.7 External Controls ...................................................... 24

11.8 Complete the Commissioning................................... 24

11.9 Instruction to the User ..............................................24

®

Performance Data - Graph of Air Flows v

Static Pressure.............................................................8

, C32 & C62 Appliance.................................... 10

12

Appliance..................................................... 10

22

and Air Intake ............................................................ 10

®

Unit .................................... 24

SECTION 12: User Instructions............................................25

12.1 User Instructions ......................................................25

12.2 Heater Operation......................................................25

12.3 Common User Controls............................................25

12.4 Cooling Section Operation .......................................26

12.5 Heating Section Lighting Instructions.......................26

12.6 Simple Fault Finding.................................................26

SECTION 13: Servicing.........................................................28

13.1 Servicing Instructions...............................................28

13.2 Burner Maintenance.................................................28

13.3 Fan/Motor Assembly Maintenance...........................28

13.4 Heat Exchanger Maintenance ..................................28

13.5 Gas Control Valve Maintenance ...............................29

13.6 Flue Fan ...................................................................29

SECTION 14: Conversion Between Gases ..........................30

14.1 General ....................................................................30

14.2 Burner Conversion ...................................................30

14.3 Gas Valves ...............................................................30

SECTION 15: Troubleshooting .............................................31

15.1 General ....................................................................31

15.2 Troubleshooting For Automatic Ignition Burner

Systems ...................................................................32

15.3 Troubleshooting for Flame Supervision System .......33

15.4 Troubleshooting for Solenoid Valves ........................34

15.5 Troubleshooting for Main Fan ...................................34

15.6 Troubleshooting for Fan Contactor ...........................35

SECTION 16: Removal and Replacement Parts..................36

16.1 Gas Valve.................................................................36

16.2 Burner Compartment ...............................................37

16.3 Ignition Electrode and Flame Probe. ........................38

16.4 Flue Fan ...................................................................39

16.5 Heater Pressure Switch............................................40

16.6 Cooling Coil Safety Devices .....................................41

16.7 Ignition Control .........................................................42

16.8 Fan Motor Removal ..................................................42

16.9 Combination Fan/Limit Thermostat ..........................43

Printed in U.K.

TABLE OF FIGURES

Figure 1: Condense Drain.........................................................3

Figure 2: Installation Clearances and Clearances to

Combustibles .............................................................4

Figure 3: Suspension Methods .................................................9

Figure 4: Flue and Roof Detail ................................................ 10

Figure 5: Control Section & Upper Panel ................................ 11

Figure 6: Alternate .................................................................. 11

Figure 7: Vertical and Horizontal Flue Termination -

Type B
Figure 8: Vertical and Horizontal Flue Termination -

Type C12 C32 & C62 Appliances ................................. 12

Figure 9: DualAir

Rooms......................................................................13

Figure 10: Ducting................................................................... 14

Figure 11: Gas Connection with Stainless Steel Flex

Figure 12: Automatic Burner Control Box Sequence...............22

Figure 13: Modureg Gas Valve................................................ 22

Figure 14: Heater Operating Sequence ..................................25

Figure 15: Fan/Limit Thermostat .............................................25

Figure 16: Belt Tension ...........................................................28

Figure 17: Standard Regulator Removal................................. 36

Figure 18: Cooling Coil Safety Devices. ..................................41

Figure 19: Combination Fan/Limit Thermostat........................44

Appliance...................................................12

22

®

Units Installed in Isolated Equipment

Connector............................................................... 15

Product Approval

ROBERTS GORDON® appliances have 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.

1

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

CAUTION

Do not use heater in an area containing corrosive
chemicals.

Corrosive chemicals will damage the burner and
heat exchanger parts.

Failure to follow these instructions can result in
property damage.

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 the
DualAir

®

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

2.1 Clearances to Combustibles

In all situations, clearances to combustibles must be
maintained. Caution must be used when running the

DualAir

®

unit near combustible materials such as
wood, paper, rubber, etc. A wall tag (P/N 91040089)
is on the back cover of this manual as a permanent
reminder of the safety instructions and the
importance of the required clearances to
combustibles. Affix the tag on a wall near the

DualAir

®

unit.

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

®

This DualAir

unit is designed for heating and
cooling non-residential 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, refrigerant installation, etc. must be
thoroughly understood before proceeding with the
installation.

SECTION 2: INSTALLER RESPONSIBILITY

• To supply and install a suitable condenser unit
along with associated refrigerant circuits in
accordance with the requirements of
all relevant local and national codes.

• To install the DualAir

®

unit, as well as the gas
and electrical supplies, in accordance with appli­cable specifications and codes. Roberts-Gordon
recommends the installer contact a local
building inspector, Fire Officer or insurance
company for guidance.

• To use the information given in the manual
together with the local and national codes to
perform the installation.

• To install the DualAir

®

unit in accordance with the

clearances to combustibles of this DualAir

• To furnish all needed materials not furnished
as standard equipment.

• To plan location of supports, flues and air
intakes.

• To provide access for servicing.

• To provide the owner with a copy of this
Installation, Commissioning, Operation and
Service Manual.

• To never use the DualAir

®

unit as support for lad­der or other access equipment and never hang
or suspend anything from heater.

• To ensure that there is sufficient ventilation in the
area to comply with the requirements of
all relevant local and national codes.

®

unit.

2.2 Corrosive Chemicals

Roberts-Gordon 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
sub-contractor, 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 DualAir
components will be greatly reduced. Warranty will be
invalid if the heater is exposed to halogenated hydrocar­bons.

®

unit

2.3 National Standards and Applicable Codes

All appliances must be installed in accordance with
the latest revision of applicable standards and local
and national codes. This refers also to the electric,
gas, refrigerant and venting installation. Note:
Additional standards for installations in public
garages, aircraft hangars, etc. may be applicable.

2

SECTION 3: CRITICAL CONSIDERATIONS

100 mm min.

Install to Suitable Drain

Drain to Open Funnel

Trap must be filled with
water to be effective and
prevent air being drawn
backwards into the drip tray.

3.1 Basic Information

The CTUD heater that forms the heating section of

®

the DualAir

unit has an automatic ignition burner
and may be operated as fully modulating or ON/OFF
operation.

The standard unit has the air flow from left to right
when viewed from the controls side.

A special order version with the opposite air flow is
available where the combustion air intake and flue
will be at the front of the unit.

3.2 Location and Suspension

All models:

• Must be installed indoors.

• Must be installed in a level position.

• May be mounted on the floor or on a shelf of
non-combustible material. (See Page 5, Section
4 and Page 9, Figure 3 for support points)

• May be suspended from above (See Page 9,
Figure 3), on the floor, or from wall brackets of

sufficient strength to support the DualAir

®

unit as
listed in the Dimension Data Table on Page 6,
Section 4.2. Drop rods must be a minimum of 12
mm diameter mild steel. Six suspension points

are located on top of the DualAir

®

unit.

• Must be installed in a manner which allows the
hinged door to be fully opened to provide access
to all serviceable components.

SECTION 3: CRITICAL CONSIDERATIONS

3.7 Electrical Supply

A permanent 400v 3ø 50Hz electrical supply is
required at the main electrical terminals. The heater
also requires suitable energy controls in accordance
with Section 10.

3.8 Flue

Choose a location to allow for the proper alignment
of the flue. Each DualAir

®

unit must be fitted with an
individual and correctly sized sealed flue system
(See Page 10, Section 6).

No other appliance may be connected to the flue.
For room-sealed installation, the air intake must be

the same size sealed system and the flue/air intake
must terminate at an approved concentric wall or
roof terminal.

3.9 Coil Condense Drain

The cooling coil must be fitted with a suitable
condense drain. The condense pipe work should be
in plastic or copper piping in accordance with the
latest revision of applicable standards and local and
national codes.

Figure 1: Condense Drain

3.3 Minimum Required Installation Clearances

Clearances around the DualAir
be as indicated on Page 4, Figure 2, Page 10,
Figure 4 through Page 12, Figure 8 to ensure
access for servicing, and correct operation.

3.4 Clearances to Combustibles

Clearances must be as indicated on Page 4, Figure

2. If no clearances to combustibles are indicated,

then installation clearances apply.

3.5 Ventilation

It is important to ensure that there is adequate air
circulation around the DualAir

combustion, ventilation and distribution in
accordance with local and national codes.

3.6 Gas Supply

It is important that the gas supply pipe is sized
correctly to provide the inlet pressure as stated on
the heater data plate. The gas supply pipe and
electrical connections must not support any of the
heater's weight.

®

unit and flue must

®

unit to supply air for

Failure to install the condense drain correctly may
cause water carry over into the fan compartment,
which may then escape and cause property
damage.

3

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

WARNING

Fire Hazard

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

Keep all flammable objects, liquids and vapours the
required distance away from the heater.

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

Clearances to Combustibles

Alternative

Wall

Terminal

Roof Terminal

Air

Intake

Flue

15 cm

2.5 - 3.5 m*

3 m

60 cm

Installation Clearances

Customers

Suitable

Condenser

Unit

Insulated

refrigerant pipes

to cooling coil

by customer.

Condense

Drain

Install to

suitable drain,

See Page 3,

Figure 1.

Air Flow

50 cm

50 cm**

30 cm

15 cm

If installed at low levels where individuals can come in contact with hot heat exchanger components,
adequate guarding must be provided.

All distances are minimum clearance requirements for service access, air flow and safety.

Free blowing DualAir

®

units must always be installed at least 1.8 m above the floor.
Ducted installations may be floor mounted.
The flue pipe must have clearance from combustibles by 5 cm.

**80 cm is necessary to
service heater.

* Free blowing DualAir

®

units may be mounted at
a higher level if destratification fans and/or turn
down nozzles are installed.

Figure 2: Installation Clearances and Clearances to Combustibles

4

SECTION 4: SPECIFICATIONS

225

Air Intake

Flue

Heater Section Fan Compartment

Electrical

Connections

(behind door)

Filter CompartmentCondense Drain

Air Outlet
Spigot
(35 mm flange)

Air Intake 130 mm dia

Coil Protection,

Frost Thermostat

& Pressure Switch

Alternate
Flue &
Air Intake
Position

Cooling Coil

Air Inlet Spigot

(35 mm flange)

3010

896 225

1239

Internal

Spigot
Height

1417

Flue 130 mm dia

Lockout

Reset

Green

Burner

On

Red

Lockout

Warning

Amber

Dirty Filter

Warning

734

Gas

Connection

112 7

20 mm Conduit Entry
for Electrical Connections

1494

671

2070 532

1239

Internal

Spigot
Height

1250 Internal Spigot Width

Alternate
Flue &
Air Intake
Position

315

89051 399

1340

1590

Extension
Cover for
Refrigerant
Pipe-work

538

1032

Standard Flue &
Air Intake Position

Side View

Front View

Rear View

Front View (Left Version)

Rear View (Left Version)

4.1 DAT

SECTION 4: SPECIFICATIONS

5

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

Electrical load at 230v 50Hz measured by calculating from total run current of appliance.

* Do not exceed the maximum length of flue stated or heater may not operate properly.

Reduce the maximum length stated by 1 m for each 90° bend installed.

**If minimum air flow requirements are not met then temperature limit devices will shut down the heater.

Model

Designed Air Flow # with Clean Filters

m

3

/sec

Min Air Flow at Coil

m

3

/sec

Max Air Flow at Coil

m

3

/sec

Fan Unit

Fan Pulley mm PCD

Motor Pulley mm PCD

Vee Belts

Total Electrical Load kW

Motor Size kW

Full Load Current A

Run Current at Designed Air Flow # A

Start Current A

Inlet Connection in

Outlet Connection in

Condensate Connection ISO 7-R

Refrigerant

°C Dry Bulb

°C Wet Bulb

°C Dry Bulb

°C Wet Bulb

All Models

Initial Pressure Loss

mbar

Max. Recommended Pressure Loss

mbar

Weight kg

NR dB(A)

SPL dB(A)

NR dB(A)

SPL dB(A)

NR dB(A)

SPL dB(A)

68
68
73
75

5.4

1

23.0 24.0

7.0 / 7.5

57.74 71.54

2.88

1.66

3.71

2A x 112 / 2A x 118

115

3.7

2.60

5.34

75 90

2 x A 63

2A x 180 / 2A x 200

2A x 100 / 2A x 95

Fan Data

457-486 Double Inlet Belt Drive

2A x 180

2 x A 64

100

kW

Max Cooling Load Split into Two Equal

Circuits

Design Temp. ON

Design Temp. OFF

27

R407C

612 621

1 5/8 copper

638 647

65

0.4

1.5

Qty. 6 - Farr 30/30 grade 100 x 635 x 406

Filters - All Models

7/8 copper

1 3/8 copper

18.07

14.66

Electrical Data - All models need 400v 50Hz 3N supply. Single phase supply output for control circuit
230v 50Hz fused at 5 Amp. All alarm and status signals 230v 50Hz. Modulation input 0-10vDC.

Cooling Coil - DX

4.0

7.5

2.2

4.45

4.0 / 4.5

3.3

Physical Data

Noise from Cabinet at 1 m 67.5

72

13.72

13

12.3

19.4

25

Noise from Air Inlet at 1 m

77
75

Noise from Air Outlet at 1 m

81
7776

4.2 General Technical Data Table

6

4.3 Technical Data Table - Heater Section

Gas rates corrected to standard conditions 1013.25 mbar 15°C.
*See Page 44, Figure 19 for detailed Combination Fan/Limit Thermostat settings.

Model

Heat Input kW

Gross Calorific Va lue

Btu/h x 1000

Heat Input kW

Net Calorific Value

Btu/h x 1000

Approximate kW

Max Heat Output

Btu/h x 1000

Min Heat Input - Low Fire kW

Gross Calorific Va lue

Btu/h x 1000

Min Heat Input - Low Fire kW

Net Calorific Value

Btu/h x 1000

kW

Btu/h x 1000

Set Point 1 Fan OFF Temp.

°C

Set Point 2 Fan ON Temp.

°C

Set Point 3 Limit Temp. °C

Secondary Limit Thermostat

°C

Max Burner Pressure mbar

m3/h

ft3/h

Min Burner Pressure - Low Fire mbar

m3/h

ft3/h

Max Burner Pressure mbar

m3/h

ft3/h

Min Burner Pressure - Low Fire mbar

m

3

/h

ft

3

/h

Max Burner Pressure mbar

m3/h

Max Gas Flow Rate

kg/h

liquid l/h

Min Burner Pressure - Low Fire mbar

m3/h

Min Gas Flow Rate

kg/h

liquid l/h

Max Burner Pressure mbar

m3/h

Max Gas Flow Rate

kg/h

liquid l/h

Min Burner Pressure - Low Fire mbar

m3/h

Min Gas Flow Rate

kg/h

liquid l/h

68.6
234

77.7
265

Min Heat Output - Low Fire

54.6
186

63.7
217

9.24

1.86

4.53

7.91

2.16

5.29

11.209.87

2.32

5.66

2.63

6.42

9.2

3.75

9.17

13.2 14.1 16.0

3.09 3.32

7.55 8.09

9.0 9.5 9.0

18.3 19.4 18.3

11.3

6.5

2.65

18.7

8.96 10.43 11.20 12.67

4.55 5.31 5.69 6.45

2.46 2.86 3.07 3.48

12.5 13.4 12.4 12.7

12.8 14.9 16.0 18.1

6.5 7.58 8.13 9.21

3.51 4.09 4.39 4.97

25.6 27.3 25.3 25.9

7.74

273.4

6.64

234.6

9.40

332.0293.2

8.30

4.9 5.04.54.6

335.1 391 419 474

9.49 11.06 11.86 13.43

279.3 316.4

10.0 9.3 9.2 10.2

6.30 7.4 7.9 9.0

3.23 2.9 3.0 3.1

319 371 398 451

9.0 10.5 11.3 12.8

45

6.6 6.0 6.2 6.3

121

457

134

115

119

90 100

289

84.7

320

93.8

379

111

413

111

256

74.9

284

83.3

334

98

365

107

406

75

239

70

265

77.7

311

91

341

100

379

293

86

324

95

227

66.5

266

78

LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (Alternative where permitted 50 mbar) Minimum
25 mbar Maximum 57.5 mbar

LPG Butane (G30) Data - Inlet Pressure 29 mbar Min 20 mbar Max 35 mbar

205

60.2

30

50 45
85

222.5 259.6

*Combination Fan/Limit Thermostat Settings

Min Gas Flow Rate

Min Gas Flow Rate

Max Gas Flow Rate

Max Gas Flow Rate

Natural Gas (G20) Data - Inlet Pressure 20 mbar Min 17 mbar Max 25 mbar

Natural Gas (G25) Data - Inlet Pressure 25 mbar Min 20 mbar Max 30 mbar

70 75

75

Appliance Category II

2H/L 3B/P

SECTION 4: SPECIFICATIONS

7

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

350

300

250

200

150

100

50

0

2.4 2.6 2.8 3.0 3.2

3.4

2.2

400

Air Flow m3/sec

95 mm motor pulley x 180 mm fan pulley
100 mm motor pulley x 200 mm fan pulley

Static Pressure Pa

350

300

250

200

150

100

50

0

3.0 3.2 3.4 3.6 3.8

4.0

2.8

400

Air Flow m3/sec
118 mm Pulley 112 mm Pulley

Static Pressure Pa

4.4 DualAir

®

Performance Data - Graph of Air Flows v Static Pressure

4.4.1 DAT75 and 90 (2.2 kW or 4 kW motor)

4.4.2 DAT100 and 115 (4 kW motor)

8

SECTION 5: HEATER INSTALLATION

WARNING

Crush Hazard

Use 12 mm steel drop rod
minimum.

Failure of the supports can
result in death, injury
or property damage.

12 mm

Steel

Drop Rod

Nut

Washers

Nut

Locknut

Rolled Steel

Channel

Floor

Base

SECTION 5: HEATER INSTALLATION

5.1 General

®

DualAir

units are designed for installation above

2.5 m. When connected to duct delivery systems
any suitable location will be acceptable.

®

For floor mounting, the DualAir

unit may stand

directly on its base.

5.2 Handling

All DualAir

®

units have steel channel sections at the
base to be used to support the equipment. Three
steel sections are also provided across the top of the

unit for support. The DualAir

®

unit may be

suspended from these top sections.

®

The DualAir

unit is heavy and proper handling

equipment must be used by trained engineers.

Figure 3: Suspension Methods

5.3 Shelf Mounting and Suspension

For typical suspension See Page 9, Figure 3.

9

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

WARNING

Fire Hazard

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

Keep all flammable objects, liquids and vapours the
required distance away from the heater section.

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

Roof

Flue

Terminal

Metal Sleeve

Masterflash

soaker flashing

or Rain Collar.

Flue

25mm Air Gap to

Combustible Material

SECTION 6: FLUE INSTALLATION

6.1 Flue Installation
Figure 4: Flue and Roof Detail

The flue must terminate outside of the building.
Flues and air intakes must be fully sealed and
correctly sized for the model. Flues should be
assembled as detailed on Page 10, Figure 4 through
Page 12, Figure 8. The joints between the flue
terminal and the roof or wall must be sealed. If the
flue passes through a wall or ceiling of combustible
material, it must be enclosed by a sleeve of non­combustible material and be separated from the
sleeve by at least a 25 mm air gap.

Flues and air intakes must be adequately
supported so that the DualAir

®

unit does not

bear the weight of the pipes.

For flue termination See Page 10, Figure 4 through
Page 12, Figure 8.

6.4 Converting from Top to Side Terminations for
Flue and Air Intake

1. Remove the control section lower door and
upper panel. See Page 11, Figure 5 through
Figure 6 for details.

6.4.1 Flue Conversion

1. Remove the inner and outer flue spigots from

6.2 Type C

, C32 & C62 Appliance

12

Room Sealed.
The heaters are designed to be installed as room

sealed appliances. The flue and air intake are run as
separate pipes to the concentric wall or roof
terminal. See Page 12, Figure 8.

6.3 Type B

The flue must terminate outside the building and be

Appliance

22

fitted with a low resistance terminal.
See Page 10, Figure 4 through Page 12, Figure 7.

6.3.1 Air Intake Terminal Cover

For Type B

appliance installations, an air intake

22

terminal cover is an available option. The cover is
scored flat sheet metal that must be bent into shape.
See Page 12, Figure 7. Remove and retain the
screws for the air inlet spigot. Use these screws to
attach the cover in position over the spigot.

10

the top. Retain the spigot and internal seal.

2. Disassemble the flue back to spigot "A". See
Page 11, Figure 6. Ensure all seals are still in
place.

3. Fit 90° bend directly into spigot "A" pointing
forwards.

4. Cut a 90 mm length from the 360 mm flue that
was removed.

5. Attach this piece to the 90° bend, then attach
the inner spigot that was removed.

6.4.2 Air Intake Conversion

1. Remove the flexible hose from the air intake
spigot.

2. Remove the spigot from the top.

3. Move the blanking plate from the upper panel
(previously removed) to the top to cover the
original flue and air intake holes.

4. Refit the upper panel feeding the air intake flex­ible hose through the upper hole and aligning
the flue with the lower hole.