FOR YOUR SAFETY |
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If you smell gas: |
DualAir |
® |
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6. |
supplier after leaving the building. |
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1. |
Open windows. |
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2. |
DO NOT try to light any appliance. |
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3. |
DO NOT use electrical switches. |
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4. |
DO NOT use any telephone in |
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your building. |
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5. |
Leave the building. |
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Immediately call your local gas |
Heating and Cooling Units |
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Follow the gas supplier’s |
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instructions. |
Installation, Commissioning, |
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supplier, call the Fire Department. |
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7. |
If you cannot reach your gas |
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Operation & Service Manual |
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WARNING |
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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 |
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Installer |
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Please take the time to read and understand |
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Improper installation, adjustment, alteration, service |
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these instructions prior to any installation. |
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or maintenance can result in death, injury or property |
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Installer must give a copy of this manual to the owner. |
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damage. Read the installation, operation and service |
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manual thoroughly before installing or servicing |
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Owner |
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this equipment. |
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Keep this manual in a safe place in order to provide |
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Installation must be done by a registered installer/ |
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your serviceman with necessary information. |
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contractor qualified in the installation and service |
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of gas-fired heating equipment or your gas supplier. |
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Roberts-Gordon Europe Limited |
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Unit A, Kings Hill Business Park |
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Darlaston Road, Wednesbury |
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West Midlands WS10 7SH UK |
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Telephone: +44 (0)121 506 7700 |
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Fax: +44 (0)121 506 7701 |
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Service Telephone: +44 (0)190 249 8733 |
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Service Fax: +44(0)190 240 1464 |
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Quality in Any Language™ |
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E-mail: uksales@rg-inc.com |
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E-mail: export@rg-inc.com |
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© Copyright 2007 Roberts-Gordon, LLC |
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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 |
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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 |
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4.4 |
DualAir® Performance Data - Graph of Air Flows v |
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15.1 |
General .................................................................... |
31 |
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Static Pressure............................................................. |
8 |
15.2 |
Troubleshooting For Automatic Ignition Burner |
|
SECTION 5: Heater Installation.............................................. |
9 |
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Systems ................................................................... |
32 |
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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 |
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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 |
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16.3 |
Ignition Electrode and Flame Probe. ........................ |
38 |
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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 |
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7.2 Open Flued Installation .............................................. |
13 |
16.7 |
Ignition Control ......................................................... |
42 |
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7.3 Building Ventilation ..................................................... |
13 |
16.8 |
Fan Motor Removal .................................................. |
42 |
|
7.4 Isolated Equipment Rooms ........................................ |
13 |
16.9 |
Combination Fan/Limit Thermostat .......................... |
43 |
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SECTION 8: Optional Heater Configurations...................... |
14 |
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8.1 |
Distribution Duct ........................................................ |
14 |
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SECTION 9: Gas Piping ........................................................ |
15 |
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9.1 |
Connections............................................................... |
15 |
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SECTION 10: Wiring and Electrical Information................. |
16 |
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10.1 Electrical Supply ...................................................... |
16 |
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10.2 Remote Control ........................................................ |
16 |
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10.3 DAT Main Circuit Board Terminal Identification ........ |
17 |
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10.4 DAT Wiring Diagram................................................. |
18 |
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10.5 DAT Wiring Diagram................................................. |
19 |
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10.6 DAT Site Connections at Main Circuit Board............ |
20 |
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SECTION 11: Commissioning .............................................. |
21 |
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11.1 Pre-Commission Checks .......................................... |
21 |
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11.2 Gas Supply ............................................................... |
21 |
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11.3 Mechanical Checks................................................... |
21 |
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11.4 Begin Commissioning ............................................... |
21 |
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11.5 Combustion Testing .................................................. |
23 |
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11.6 Turning Off the DualAir® Unit .................................... |
24 |
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11.7 External Controls ...................................................... |
24 |
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11.8 Complete the Commissioning................................... |
24 |
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11.9 Instruction to the User .............................................. |
24 |
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© 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 |
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Rooms...................................................................... |
13 |
Figure 10: Ducting................................................................... |
14 |
Figure 11: Gas Connection with Stainless Steel Flex |
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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
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Alternative |
Air |
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Wall |
Intake |
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Terminal |
15 cm |
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Condense |
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Air Flow |
Drain |
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Install to |
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suitable drain, |
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See Page 3, |
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Figure 1. |
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60 cm |
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3 m |
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Insulated |
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2.5 - 3.5 m* |
refrigerant pipes |
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to cooling coil |
Customer’s |
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by customer. |
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Suitable |
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Condenser |
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Unit |
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* 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
SECTION 4: SPECIFICATIONS
SECTION 4: SPECIFICATIONS 4.1 DAT
Side View |
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3010 |
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2070 |
532 |
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1127 |
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Air Intake 130 mm dia |
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896 |
225 |
Air Inlet Spigot |
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Flue 130 mm dia |
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734 |
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(35 mm flange) |
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671 |
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20 mm Conduit Entry |
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Gas |
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for Electrical Connections |
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Connection |
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Coil Protection, |
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Frost Thermostat |
1494 |
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& Pressure Switch |
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1417 |
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Heater Section |
Alternate |
Fan Compartment |
1239 |
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Internal |
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Flue & |
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Spigot |
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Air Intake |
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Height |
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Position |
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Lockout |
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Electrical |
Cooling Coil |
Condense Drain Filter Compartment |
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Air Outlet |
Reset Red |
Green |
Amber |
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Connections |
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Spigot |
Lockout |
Burner Dirty Filter |
(behind door) |
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(35 mm flange) Warning |
On |
Warning |
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Front View |
1032 |
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Standard Flue & |
Front View (Left Version) |
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Air Intake |
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Air Intake Position |
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315 |
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538 |
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225 |
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Alternate |
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Flue |
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Air |
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Position |
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Extension |
Flue |
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51 |
890 |
399 |
Cover for |
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1340 |
Refrigerant |
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Pipe-work |
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1590 |
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Rear View |
1250 Internal Spigot Width |
Rear View (Left Version) |
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1239 Internal Spigot Height
5
DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL
4.2 General Technical Data Table
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Model |
75 |
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90 |
100 |
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115 |
Fan Data |
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Designed Air Flow # with Clean Filters |
m3/sec |
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2.88 |
3.7 |
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Min Air Flow at Coil |
m3/sec |
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1.66 |
2.60 |
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Max Air Flow at Coil |
m3/sec |
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3.71 |
5.34 |
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Fan Unit |
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457-486 Double Inlet Belt Drive |
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Fan Pulley |
mm PCD |
2A x 180 / 2A x 200 |
2A x 180 |
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Motor Pulley |
mm PCD |
2A x 100 / 2A x 95 |
2A x 112 / 2A x 118 |
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Vee Belts |
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2 x A 63 |
2 x A 64 |
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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 |
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3.3 |
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5.4 |
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Motor Size |
kW |
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2.2 |
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4.0 |
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Full Load Current |
A |
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4.45 |
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7.5 |
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Run Current at Designed Air Flow # |
A |
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4.0 / 4.5 |
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7.0 / 7.5 |
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Start Current |
A |
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23.0 |
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24.0 |
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Cooling Coil - DX |
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Max Cooling Load Split into Two Equal |
kW |
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57.74 |
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71.54 |
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Circuits |
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Inlet Connection |
in |
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7/8 copper |
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Outlet Connection |
in |
1 3/8 copper |
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1 5/8 copper |
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Condensate Connection |
ISO 7-R |
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1 |
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Refrigerant |
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R407C |
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Design Temp. ON |
°C Dry Bulb |
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27 |
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25 |
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°C Wet Bulb |
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19.4 |
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18.07 |
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Design Temp. OFF |
°C Dry Bulb |
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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