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Warranty 

 
 

This product has a warranty period of two years. The warranty can be upgraded to THREE years 
from the date of purchase against faulty material or workmanship by registering on our web site 
www.airflow.com       
 
The warranty only covers the product and not the installation cost. 
 
In case such a fault in the manufacture becomes apparent during the Warranty Period, Airflow 
may, at its absolute discretion, repair the product free of charge or refund the cost of the product 
AS LONG AS AND ONLY IF: 
 
 

1.  The product is returned within the Guarantee Period with evidence of purchase date 

 

2.  The product has not been misused or handled carelessly or used on an inappropriate 

 

     voltage supply 

 

3.  Repairs have not been attempted other than by Airflow’s service staff or 

4.  In Airflow’s sole discretion, the product is found to be faulty. If it were not found to be 

 faulty, the product would be available for collection from the relevant Airflow premises 
 within one calendar month and if it was not collected, it would be subsequently 
 delivered by Airflow and a delivery charge will be made.  

 

5.  Has been installed in accordance with the latest Building Regulations and IEE Wiring 

 

     Regulations. 

 
 
This warranty does not confer any rights other than those expressly set out above and does not 
cover any claims for consequential loss, damage or any costs incurred in the replacement of the 
faulty product. 
 
This warranty is offered as an extra benefit and does not affect your statutory right as a 
consumer. 
 
All information believed correct at time of going to press. 
 
All goods are sold according to Airflow Developments Limited’s Standard Condition of Sale which 
is available on request. 
 
In the interest of continuous development Airflow Developments Limited continuously strive to 
improve their products and reserve the right to change specifications and prices without prior 
notice. 
 
 
 
 
 
 
 

 

 
©Copyright 2011. Airflow Developments Ltd 
 
 

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Airflow Developments Limited 
Aidelle House, Lancaster Road 
Cressex Business Park, High Wycombe 
Buckinghamshire. HP12 3QP. UK 

E-mail: info@airflow.com 
Telephone: +44(0)1494 525252 
Facsimile: +44(0)1494 461073 

Summary of Contents for Duplexvent DV72

Page 1: ...r Manual Commissioning Data to be completed by the installer Date of installation Configuration Left Hand Right Hand Product Serial No Important This multi speed unit requires Air Flow Rates to be adj...

Page 2: ...ts 6 3 4 Connecting condensation drain 6 3 5 Electrical connections 10 3 6 Installation diagram Fitting the unit 12 4 User Maintenance 13 4 1 Cleaning the filters by user 13 4 2 Cleaning the heat exch...

Page 3: ...enters the home at a comfortable level In exceptionally cold weather or winter conditions it is possible that the exchanger may freeze due to sub zero cold incoming air Therefore the unit must be site...

Page 4: ...e position of the condensation drain at the bottom of the unit See figure 3 on page 4 Using the stand off feet screws and plugs supplied fit the unit vertically either in a kitchen cupboard or on a wa...

Page 5: ...allation 3 Fitting the HR unit The mounting plate of the HR unit can be fitted directly to the wall or joists with the screws plugs and stand off feet provided Ensure that there is enough space for th...

Page 6: ...l as the exhaust system does not exceed 100 Pascal A No exhaust duct too close to the air inlet B Inlet duct from roof C Outlet duct from roof D HR unit E Ducts from and to the house F Condensation dr...

Page 7: ...slide the heat exchanger out from the housing 3 Determine what side you want the condensate drain to be see figure 3 for left and right hand positioning If mounting the unit vertically the condensate...

Page 8: ...the condensation drain Now use a 20mm core drill bit to drill a clean hole at this point ensuring all the debris is removed 5 Screw the condensation fitting as shown and silicone seal to create a wat...

Page 9: ...pipe Condensation drain 22mm standard PVC Important Note The unit can only be mounted horizontally with an additional condensation kit This unit is not suitable for ceiling suspended installation For...

Page 10: ...pon installation the fans should be started in High Speed mode to ensure optimum performance of the fans and switched to the required continuous ventilation setting The fan speed control must not be m...

Page 11: ...Figure 4 Electrical Diagram 11...

Page 12: ...by pulling the casing straight forward 4 Unscrew the four forward protruding studs and keep safely 5 Stand unit upright to separate the metal wall mounting plate from the bottom half of the casing Pu...

Page 13: ...be used without filters 4 1 Cleaning the filters by user 1 2 Switch off the power supply Remove the filters Remove front panel Remove filter covers 3 4 Vacuum the outside of the filters After cleanin...

Page 14: ...at exchanger with not to damage the rubber seals warm soapy water Use a sterilizing agent to sterilize The fans must be cleaned if they are dirty Be sure not to bend the blades of the fan since this c...

Page 15: ...issible duct system resistance Pa 100 Pa at 200 m3 h Maximum flow Free Discharge 280 m 3 hr 78 l sec Low and Medium flow and optional sensor inputs 0 100 adjustable on each speed Set on installation D...

Page 16: ...ction year and the name of the part Example Appliance type DV72 Serial number Year of production 2010 Part No 9041322 Part required Replacement Filters 2 9041511 Type and serial number are printed on...

Page 17: ...h Wycombe HP12 3QP Telephone 01494 525252 Website www airflow co uk Original Manufacturer if different First Year of Manufacture 2010 Last Year of Manufacture Testing Body BRE Date of test 22 03 2010...

Page 18: ...hen 4 additional wet rooms 100 Variable 0 93 88 Yes Kitchen 5 additional wet rooms 100 Variable 1 06 87 No These figures are entered into either a In the case of SAP software amended to SAP 2005 versi...

Page 19: ...005 version 9 80 the SAP Q MVHR Calculation Spreadsheet v9 80 and the results from the spreadsheet into the Special Features part of the SAP 9 80 software They must NOT be entered directly into SAP 20...

Page 20: ...sex Business Park High Wycombe Buckinghamshire HP12 3QP T 44 0 1494 525252 Visit airflow com Description of equipment Mechanical Heat Recovery Ventilation Unit Relative EC Council Directives 2004 108...

Page 21: ...calendar month and if it was not collected it would be subsequently delivered by Airflow and a delivery charge will be made 5 Has been installed in accordance with the latest Building Regulations and...

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