Airflow Duplexvent BV400 Operating instructions

MODEL: BV400
Mechanical Ventilation with Heat Recovery
User and Maintenance Manual
Part No: 90000660
PLEASE RETAIN THESE INSTRUCTIONS WITH THE PRODUCT
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1. Introduction................................................................................................................
2. Why Ventilate?...........................................................................................................
3. How Does A Ventilation System With Heat Recovery Work?................................
4. Components...............................................................................................................
5. Technical Data............................................................................................................
6. Performance Curve....................................................................................................
7. Sound Curve...............................................................................................................
8. Dimensions.................................................................................................................
9. Operating Instructions..............................................................................................
9.1 Pro Control Settings.....................................................................................
9.2 Pro Panel Screen.........................................................................................
9.3 Pro Panel Error Code List............................................................................
9.4 Modbus Connection.....................................................................................
9.5 Fan Speed Adjustment.................................................................................
9.6 Other Control Functions...............................................................................
9.7 Control Card Troubleshoot...........................................................................
10. Maintenance Instructions........................................................................................
10.1 Filter Maintenance......................................................................................
10.2 Heat Exchanger Maintenance....................................................................
10.3 Sensor Replacing Instruction.....................................................................
10.4 Other Maintenance Procedures.................................................................
11. Accessories..............................................................................................................
12. Troubleshooting.......................................................................................................
13. Declaration Of Conformity......................................................................................
14. Warranty....................................................................................................................
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INDEX

1. Introduction
2. Why Ventilate?
Dear Customer,
Thank you for choosing a Duplexvent Mechanical Ventilation with Heat Recovery (MVHR) unit.
The balanced heat recovery ventilation unit Duplexvent BV400 has a state of the art design and
must be used according to the planning calculations and operating instructions.
Please read the information in the user manual carefully before you start using your equipment.
In this document you will find instructions for usage and maintenance which are necessary to
operate your unit properly and improve the longevity of your ventilation unit.
This manual is intended for qualified installers and users of this unit. If you have any further
questions, please contact:
Airflow Developments Limited
Aidelle House, Lancaster Road, Cressex Business Park
High Wycombe, Buckinghamshire, HP12 3QP
United Kingdom
Tel: (Int +44) (UK 0) 1494 560800
Fax: (Int +44) (UK 0) 1494 461073
E-mail: [email protected]
Visit: www.airflow.com
Please keep this manual in a place where it is accessible at all times. In case of loss of this
document please refer to the relevant product page on our website.
The manufacturer is not liable for damage caused by unprofessional installation and operation
that is not in compliance with this manual. Failure to follow these instructions may cause the loss
of product warranty.
Electrical Connection
Caution: Before opening the door of the unit for cleaning, filter replacement or
general maintenance always make sure that the equipment is
isolated or disconnected from the power supply.
With ever increasing energy costs the need to conserve heat and power is leading to higher
levels of insulation and air tightness in residential dwellings and commercial buildings which
inevitably leads to poor indoor air quality.
In a healthy home, thousands of litres of fresh air are needed every day to replace the moist air
generated by individuals and also through cooking, washing and bathing (please refer to UK
Building Regulations, Approved Document F for guidance).
Danger
Electric Shock
risk
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3. How Does A Ventilation System With Heat Recovery Work?
Heat Recovery is a process of continuously heating incoming fresh air, by using the heat energy
from outgoing stale, warm air and transferring a percentage of it to the incoming fresh air. This is
accomplished by passing the incoming and outgoing air through a highly efficient heat
exchanger. At no time do the airstreams mix as the heat radiates through plates of the heat
exchanger, so no odour issues are possible.
Extract Air
Stale air is contaminated with humidity and odours which are extracted from the kitchen,
bathroom, toilet, en-suite and utility rooms. Extraction vents in wet room areas allow a constant
air volume to be extracted.
This is backed up by a boost facility, removing stale air at a higher rate for a short period of time.
Supply Air
Fresh oxygenated air from outside passes through the filter and heat exchanger before being
supplied into bedrooms, living and dining rooms etc. This fresh air is drawn into the various wet-
rooms collecting pollutants on its way such as moisture, odours, allergens and volatile organic
components. The air is also heated as it passes from room to room using the statutory gap at the
bottom of internal doors when closed.
The now stale, polluted air is then drawn out of wet rooms through the heat recovery unit to
outside, completing the cycle.
Ventilation is necessary to provide a healthy and comfortable internal environment for a
building's occupants. The main task of ventilation is to remove polluted indoor air from a building
and replace it with fresh outdoor air.
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1
2
3
4
5
2
3
4
5
Extracted Air:
bathroom, en-suite, toilet,
utility and kitchen
Stale Air to Outside
Incoming Fresh Air
Heat Recovery Unit
Fresh Air from Outside:
bedroom, living-room and dining-room

EC Fan Speed settings selected on installation
(Low & High speed levels are 100% adjustable)
Typical Ventilation Settings at 100 Pa
Rated Voltage
Maximum Air Volume (at 0 Pa)
Air Volume (at 100 Pa)
Thermal Efficiency
Specific Power Input
Power Supply
Maximum Power Input
Maximum Current
Filter Class (conforming to EN779)
Duct Connection Ø
Condensate Discharge Ø
Protection Class
Operating Temperature
Operating Humidity
Dimensions (W x H x D)
Weight
*Low speed air flow is given for 50 Pa.
450 m³/h (125 l/s)
370 m³/h (103 l/s)
90.5%
0.259 W/m³/h
230V / 1PH / 50Hz
169 W
1.5 A
G4 (F7 optional)
160 mm
22 mm
IP44
-10°C to +40°C
0% to 80% RH
710 x 725 x 630 mm
41 kg
50 m³/h
3.0 V
Low
160 m³/h
5.5 V
Medium
310 m³/h
8.0 V
High
370 m³/h
10.0 V
Boost
4. Components
5. Technical Data
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Control Box
Extract & Supply Air Filters
By-pass Module
Heat Exchanger
Metal Casing
Extract & Supply Air Fans
* Humidity sensor is built-in as a standard.
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6
1
4
3

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0
0
50
100
150
200
250
300
350
400
450
500
100 200 300 400 450 500
350
250
150
50
Air Volume (m³/h)
External Pressure (Pa)
Low Speed
Medium Speed
High Speed
Boost
6. Performance Curve

Low Speed
Medium Speed
High Speed
Boost
7. Sound Curve
Octave Sound Pressure Level (dB: Overall A Scale )
Central Frequency (Cycle per Second) Hz
dB(A)
63 125 250 500 1000 2000 4000 8000
NR0 NR10 NR20
NR40
NR50
NR60
NR30
60
50
40
30
20
10
The graph below shows Octave Sound Pressure Level for different fan speeds and Frequency
bands. It also shows the NR curves, which specify Maximum Noise Rating Level for various
applications according to the table below.
Noise Rating Curve
Maximum Noise
Rating Level
Application
NR 25
Concert halls, broadcasting and recording studios, churches
NR 30
Private dwellings, hospitals, theaters, cinemas, conference rooms
NR 35
Libraries, museums, court rooms, schools, hospitals operating theaters
and wards, flats, hotels, executive offices
NR 40
Halls, corridors, cloakrooms, restaurants, night clubs, offices, shops
NR 45
Department stores, supermarkets, canteens, general offices
NR 50
Typing pools, offices with business machines
NR 60
Light engineering works
NR 70
Foundries, heavy engineering works
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8. Dimensions
Front View
Front View
Service Space
Top View
Top View
710
725
731
10
160
287 116
23
130 103475
Rear
Rear
Front
Front
630
610
A clear space of 600mm
should be provided in
front of the unit to allow
for servicing.
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Clearance for condensate drain
Front View
Front View
Service Space
Top View
Top View
710
725
731
10
160
287 116
23
130 103475
Rear
Rear
Front
Front
630
610
*All dimensions are in mm.
min. 110 mm.

9. Operating Instructions
Continuous ventilation is necessary to ensure a healthy indoor air quality and to maintain the
building fabric in good condition at all times. Even with prolonged absence of residents (i.e.
holiday) it is not recommended to switch off the ventilation unit since indoor contaminants are
still being produced and entering the air, causing the air to get stuffy and a high possibility of
moisture damage due to excess humidity during the heating season.
Do not turn off the device! This is required for protection against moisture in accordance
with DIN 1946 Part 6 and Building Regulations 2010 Approved Document Part F.
The ventilation unit works properly when the flow rates are adjusted in accordance with the
above regulations to ensure optimum ventilation of the house.
Note: The low and high speed levels can be adjusted for commissioning purposes by changing
values in Registers 68-71 in Pro Panel (please see chapter 9.4.4).
This can be also done by using manual potentiometers, which are located at the control box
mounted on the Fan module inside the unit. The medium speed has been set in the controller's
software by the manufacturer and is set as the average value of the manually adjusted low and
high speed levels.
Parameters Settings
Low Speed Supply/Extract 30% (3V)
55% (5.5V)
80% (8V)
100% (10V)
15 min
1 min
3000 hours
22°C
Extract Air Temperature
-3°C
15 min
0°C
Medium Speed Supply/Extract
High Speed Supply/Extract
Boost Speed Supply/Extract
Manual Boost Overrun
On-demand Boost Delay
Filter Timer
Requested Indoor Temperature
Indoor Temperature Selection
Defrost Temperature
Defrost Cycle
Pre-heater Temperature
Default Factory Settings
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