Roberts Gorden DAT75, DAT90, DAT115, DAT100 User Manual

0 (0)

FOR YOUR SAFETY

 

 

If you smell gas:

DualAir

®

6.

supplier after leaving the building.

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.

 

 

 

Immediately call your local gas

Heating and Cooling Units

 

Follow the gas supplier’s

 

instructions.

Installation, Commissioning,

 

supplier, call the Fire Department.

7.

If you cannot reach your gas

 

 

 

 

Operation & Service Manual

 

WARNING

 

 

 

 

DAT75

DAT90

DAT100

DAT115

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

 

 

Installer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Please take the time to read and understand

Improper installation, adjustment, alteration, service

 

 

these instructions prior to any installation.

or maintenance can result in death, injury or property

 

 

 

 

Installer must give a copy of this manual to the owner.

damage. Read the installation, operation and service

 

 

 

 

 

 

 

manual thoroughly before installing or servicing

 

 

Owner

 

 

this equipment.

 

 

 

 

 

 

 

 

 

 

 

Keep this manual in a safe place in order to provide

 

 

 

 

Installation must be done by a registered installer/

 

 

your serviceman with necessary information.

contractor qualified in the installation and service

 

 

 

 

 

of gas-fired heating equipment or your gas supplier.

 

 

 

 

 

 

Roberts-Gordon Europe Limited

 

 

 

 

 

 

 

 

Unit A, Kings Hill Business Park

 

 

 

 

Darlaston Road, Wednesbury

 

 

 

 

West Midlands WS10 7SH UK

 

 

 

 

Telephone: +44 (0)121 506 7700

 

 

 

 

Fax: +44 (0)121 506 7701

 

 

 

 

Service Telephone: +44 (0)190 249 8733

 

 

 

 

Service Fax: +44(0)190 240 1464

 

 

Quality in Any Language™

 

E-mail: uksales@rg-inc.com

 

 

 

E-mail: export@rg-inc.com

 

 

© Copyright 2007 Roberts-Gordon, LLC

 

www.rg-inc.com

P/N X527 Rev C 10/07

TABLE OF CONTENTS

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

2

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

25

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

2

12.1

User Instructions ......................................................

25

2.1

Clearances to Combustibles ........................................

2

12.2

Heater Operation......................................................

25

2.2

Corrosive Chemicals....................................................

2

12.3

Common User Controls............................................

25

2.3

National Standards and Applicable Codes ..................

2

12.4

Cooling Section Operation .......................................

26

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

3

12.5

Heating Section Lighting Instructions.......................

26

3.1

Basic Information.........................................................

3

12.6

Simple Fault Finding.................................................

26

3.2

Location and Suspension ............................................

3

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

28

3.3

Minimum Required Installation Clearances .................

3

13.1

Servicing Instructions...............................................

28

3.4

Clearances to Combustibles ........................................

3

13.2

Burner Maintenance.................................................

28

3.5

Ventilation ....................................................................

3

13.3

Fan/Motor Assembly Maintenance...........................

28

3.6

Gas Supply ..................................................................

3

13.4

Heat Exchanger Maintenance ..................................

28

3.7

Electrical Supply ..........................................................

3

13.5

Gas Control Valve Maintenance...............................

29

3.8

Flue..............................................................................

3

13.6

Flue Fan ...................................................................

29

3.9

Coil Condense Drain....................................................

3

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

30

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

5

14.1

General ....................................................................

30

4.1

DAT ..............................................................................

5

14.2

Burner Conversion ...................................................

30

4.2

General Technical Data Table .....................................

6

14.3

Gas Valves ...............................................................

30

4.3

Technical Data Table - Heater Section.........................

7

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

31

4.4

DualAir® Performance Data - Graph of Air Flows v

 

15.1

General ....................................................................

31

 

Static Pressure.............................................................

8

15.2

Troubleshooting For Automatic Ignition Burner

 

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

9

 

Systems ...................................................................

32

5.1

General........................................................................

9

15.3

Troubleshooting for Flame Supervision System .......

33

5.2

Handling ......................................................................

9

15.4

Troubleshooting for Solenoid Valves ........................

34

5.3

Shelf Mounting and Suspension..................................

9

15.5

Troubleshooting for Main Fan ...................................

34

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

10

15.6

Troubleshooting for Fan Contactor ...........................

35

6.1

Flue Installation..........................................................

10

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

36

6.2

Type C12, C32 & C62 Appliance ....................................

10

16.1

Gas Valve.................................................................

36

6.3

Type B22 Appliance.....................................................

10

16.2

Burner Compartment ...............................................

37

6.4

Converting from Top to Side Terminations for Flue

 

16.3

Ignition Electrode and Flame Probe. ........................

38

 

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

10

16.4

Flue Fan ...................................................................

39

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

13

16.5

Heater Pressure Switch............................................

40

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

13

16.6

Cooling Coil Safety Devices .....................................

41

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

13

16.7

Ignition Control .........................................................

42

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

13

16.8

Fan Motor Removal ..................................................

42

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

13

16.9

Combination Fan/Limit Thermostat ..........................

43

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® Unit ....................................

24

 

 

 

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

24

 

 

 

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

24

 

 

 

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

24

 

 

 

© 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.

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 B22 Appliance...................................................

12

Figure 8: Vertical and Horizontal Flue Termination -

 

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

12

Figure 9: DualAir® Units Installed in Isolated Equipment

 

Rooms......................................................................

13

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

14

Figure 11: Gas Connection with Stainless Steel Flex

 

Connector ...............................................................

15

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

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

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.

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.

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.

2.2 Corrosive Chemicals

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.

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® unit components will be greatly reduced. Warranty will be invalid if the heater is exposed to halogenated hydrocarbons.

To install the DualAir® unit in accordance with the

clearances to combustibles of this DualAir® unit. 2.3 National Standards and Applicable Codes

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.

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

SECTION 3: CRITICAL CONSIDERATIONS 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.

3.3 Minimum Required Installation Clearances

Clearances around the DualAir® unit and flue must 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® unit to supply air for 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.

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

Drain to Open Funnel 100 mm min.

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

Install to Suitable Drain

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.

Figure 2: Installation Clearances and Clearances to Combustibles

Installation Clearances

Roof Terminal

 

 

 

Alternative

Air

 

 

Wall

Intake

 

 

Terminal

15 cm

 

 

 

 

 

 

Condense

 

 

Air Flow

Drain

 

 

Install to

 

 

 

suitable drain,

 

 

 

See Page 3,

 

 

 

Figure 1.

 

 

60 cm

 

3 m

 

 

 

 

Insulated

 

 

2.5 - 3.5 m*

refrigerant pipes

 

 

to cooling coil

Customer’s

 

 

by customer.

 

 

Suitable

 

 

 

Condenser

 

 

 

Unit

 

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

Clearances to Combustibles

15 cm

50 cm

50 cm**

30 cm

**80 cm is necessary to service heater.

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.

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.

4

Roberts Gorden DAT75, DAT90, DAT115, DAT100 User Manual

SECTION 4: SPECIFICATIONS

SECTION 4: SPECIFICATIONS 4.1 DAT

Side View

 

 

3010

 

 

 

2070

532

 

1127

 

 

 

Air Intake 130 mm dia

 

 

896

225

Air Inlet Spigot

 

Flue 130 mm dia

734

 

 

(35 mm flange)

671

 

 

20 mm Conduit Entry

Gas

 

 

 

 

for Electrical Connections

 

 

Connection

 

 

 

 

 

 

 

 

 

Coil Protection,

 

 

 

 

Frost Thermostat

1494

 

 

 

& Pressure Switch

 

 

 

 

 

1417

Heater Section

Alternate

Fan Compartment

1239

Internal

 

 

Flue &

 

 

 

 

Spigot

 

 

Air Intake

 

 

 

 

Height

 

 

Position

 

 

 

 

 

 

Lockout

 

 

Electrical

Cooling Coil

Condense Drain Filter Compartment

Air Outlet

Reset Red

Green

Amber

Connections

 

 

Spigot

Lockout

Burner Dirty Filter

(behind door)

 

 

(35 mm flange) Warning

On

Warning

 

 

 

Front View

1032

 

Standard Flue &

Front View (Left Version)

 

 

 

Air Intake

 

 

Air Intake Position

 

 

 

 

 

 

 

315

 

 

 

 

538

 

 

 

 

 

225

 

 

Alternate

 

 

 

 

Flue

 

 

 

 

Air

 

 

 

 

Position

 

 

 

 

 

Extension

Flue

51

890

399

Cover for

 

 

 

1340

Refrigerant

 

 

 

Pipe-work

 

 

 

1590

 

 

 

 

 

Rear View

1250 Internal Spigot Width

Rear View (Left Version)

 

 

 

1239 Internal Spigot Height

5

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

4.2 General Technical Data Table

 

Model

75

 

90

100

 

115

Fan Data

 

 

 

 

 

 

 

Designed Air Flow # with Clean Filters

m3/sec

 

2.88

3.7

 

Min Air Flow at Coil

m3/sec

 

1.66

2.60

 

Max Air Flow at Coil

m3/sec

 

3.71

5.34

 

Fan Unit

 

 

457-486 Double Inlet Belt Drive

 

Fan Pulley

mm PCD

2A x 180 / 2A x 200

2A x 180

 

Motor Pulley

mm PCD

2A x 100 / 2A x 95

2A x 112 / 2A x 118

Vee Belts

 

 

2 x A 63

2 x A 64

 

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.

Total Electrical Load

kW

 

3.3

 

 

5.4

Motor Size

kW

 

2.2

 

 

4.0

Full Load Current

A

 

4.45

 

 

7.5

Run Current at Designed Air Flow #

A

 

4.0 / 4.5

 

 

7.0 / 7.5

Start Current

A

 

23.0

 

 

24.0

Cooling Coil - DX

 

 

 

 

 

 

 

 

Max Cooling Load Split into Two Equal

kW

 

57.74

 

 

71.54

Circuits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inlet Connection

in

 

 

7/8 copper

 

 

Outlet Connection

in

1 3/8 copper

 

1 5/8 copper

Condensate Connection

ISO 7-R

 

 

 

1

 

 

Refrigerant

 

 

 

 

R407C

 

 

Design Temp. ON

°C Dry Bulb

 

27

 

 

25

°C Wet Bulb

 

19.4

 

 

18.07

 

 

 

 

Design Temp. OFF

°C Dry Bulb

 

14.66

 

 

13

°C Wet Bulb

 

13.72

 

 

12.3

 

 

 

 

Filters - All Models

 

 

 

 

 

 

 

 

All Models

 

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

Initial Pressure Loss

mbar

 

 

 

0.4

 

 

Max. Recommended Pressure Loss

mbar

 

 

 

1.5

 

 

Physical Data

 

 

 

 

 

 

 

 

Weight

kg

612

 

621

 

638

 

647

 

NR dB(A)

 

65

 

 

72

Noise from Cabinet at 1 m

SPL dB(A)

 

68

 

 

67.5

 

NR dB(A)

 

68

 

 

77

Noise from Air Inlet at 1 m

SPL dB(A)

 

73

 

 

75

 

NR dB(A)

 

75

 

 

81

Noise from Air Outlet at 1 m

SPL dB(A)

 

76

 

 

77

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.

6

SECTION 4: SPECIFICATIONS

4.3 Technical Data Table - Heater Section

Appliance Category II 2H/L 3B/P

 

Model

75

90

100

 

115

Heat Input

kW

95

111

119

 

134

Gross Calorific Value

Btu/h x 1000

324

379

406

 

457

Heat Input

kW

86

100

107

 

121

Net Calorific Value

Btu/h x 1000

293

341

365

 

413

Approximate

kW

78

91

98

 

111

Max Heat Output

Btu/h x 1000

266

311

334

 

379

Min Heat Input - Low Fire

kW

66.5

77.7

83.3

 

93.8

Gross Calorific Value

Btu/h x 1000

227

265

284

 

320

Min Heat Input - Low Fire

kW

60.2

70

74.9

 

84.7

Net Calorific Value

Btu/h x 1000

205

239

256

 

289

Min Heat Output - Low Fire

kW

54.6

63.7

68.6

 

77.7

Btu/h x 1000

186

217

234

 

265

 

 

*Combination Fan/Limit Thermostat Settings

 

 

 

 

 

Set Point 1 Fan OFF Temp.

°C

 

 

30

 

 

Set Point 2 Fan ON Temp.

°C

50

45

 

45

Set Point 3 Limit Temp.

°C

85

70

 

75

Secondary Limit Thermostat

°C

 

 

75

 

 

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

 

 

Max Burner Pressure

mbar

6.6

6.0

6.2

 

6.3

Max Gas Flow Rate

m3/h

9.0

10.5

11.3

 

12.8

ft3/h

319

371

398

 

451

 

 

Min Burner Pressure - Low Fire

mbar

3.23

2.9

3.0

 

3.1

Min Gas Flow Rate

m3/h

6.30

7.4

7.9

 

9.0

ft3/h

222.5

259.6

279.3

 

316.4

 

 

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

 

 

Max Burner Pressure

mbar

10.0

9.3

9.2

 

10.2

Max Gas Flow Rate

m3/h

9.49

11.06

11.86

 

13.43

ft3/h

335.1

391

419

 

474

 

 

Min Burner Pressure - Low Fire

mbar

4.9

4.6

4.5

 

5.0

Min Gas Flow Rate

m3/h

6.64

7.74

8.30

 

9.40

ft3/h

234.6

273.4

293.2

 

332.0

 

 

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

Max Burner Pressure

mbar

25.6

27.3

 

25.3

25.9

 

m3/h

3.51

4.09

 

4.39

4.97

Max Gas Flow Rate

kg/h

6.5

7.58

 

8.13

9.21

 

liquid l/h

12.8

14.9

 

16.0

18.1

Min Burner Pressure - Low Fire

mbar

12.5

13.4

 

12.4

12.7

 

m3/h

2.46

2.86

 

3.07

3.48

Min Gas Flow Rate

kg/h

4.55

5.31

 

5.69

6.45

 

liquid l/h

8.96

10.43

 

11.20

12.67

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

 

 

Max Burner Pressure

mbar

18.3

19.4

 

18.3

18.7

 

m3/h

2.65

3.09

 

3.32

3.75

Max Gas Flow Rate

kg/h

6.5

7.55

 

8.09

9.17

 

liquid l/h

11.3

13.2

 

14.1

16.0

Min Burner Pressure - Low Fire

mbar

9.0

9.5

 

9.0

9.2

 

m3/h

1.86

2.16

 

2.32

2.63

Min Gas Flow Rate

kg/h

4.53

5.29

 

5.66

6.42

 

liquid l/h

7.91

9.24

 

9.87

11.20

Gas rates corrected to standard conditions 1013.25 mbar 15°C.

*See Page 44, Figure 19 for detailed Combination Fan/Limit Thermostat settings.

7

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

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)

 

400

 

 

 

 

 

 

 

350

 

 

 

 

 

 

Pa

300

 

 

 

 

 

 

Pressure

 

 

 

 

 

 

250

 

 

 

 

 

 

200

 

 

 

 

 

 

Static

150

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

50

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

2.2

2.4

2.6

2.8

3.0

3.2

3.4

 

Air Flow m3/sec

95 mm motor pulley x 180 mm fan pulley

 

 

 

 

 

100 mm motor pulley x 200 mm fan pulley

 

 

4.4.2 DAT100 and 115 (4 kW motor)

 

 

 

 

Static Pressure Pa

400

350

300

250

200

150

100

50

0

2.8

3.0

3.2

3.4

3.6

3.8

4.0

Air Flow m3/sec

 

 

 

 

 

118 mm Pulley

 

 

112 mm Pulley

 

 

 

 

 

 

8

SECTION 5: HEATER INSTALLATION

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.

5.3 Shelf Mounting and Suspension

WARNING

Crush Hazard

Use 12 mm steel drop rod minimum.

Failure of the supports can result in death, injury

or property damage.

For typical suspension See Page 9, Figure 3.

Figure 3: Suspension Methods

12 mm Steel Drop Rod

Nut

Washers

Nut

Locknut

Rolled Steel

Channel

Base

Floor

9

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 6: FLUE INSTALLATION 6.1 Flue Installation

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.

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.

6.2 Type C12, C32 & C62 Appliance

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 B22 Appliance

The flue must terminate outside the building and be 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 B22 appliance installations, an air intake 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.

Figure 4: Flue and Roof Detail

Flue

 

Terminal

 

 

Masterflash

 

soaker flashing

 

or Rain Collar.

Roof

 

 

Metal Sleeve

25mm Air Gap to

Flue

 

Combustible Material

 

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 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.

6.4.2Air 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.

10

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