AirTech Air+ PIV Installation and operation manual

PLEASE READ INSTRUCTIONS IN CONJUNCTION WITH THE ILLUSTRATIONS.
PLEASE SAVE THESE INSTRUCTIONS


Positive Input
Ventilation Unit
A
ir+ PI
V
A
IR+PIV/L
-
With Heater
AIR+PIV/L-B - Basic

Installation & Commissioning Instructions
220-240V~50Hz

2

Installation and Wiring Instructions for the
Air+ PIV Unit.
IMPORTANT: READ THESE INSTRUCTIONS BEFORE
COMMENCING THE INSTALLATION
SAFETY AND GUIDANCE NOTES
1. DO NOT install this product in areas where the following may
be present or occur:
1.1. Excessive oil or a grease laden atmosphere.
1.2. Corrosive or flammable gases, liquids or vapours.
1.3. Ambient temperatures higher than 40°C or less than -5°C.
1.4. Possible obstructions which would hinder access or removal
of the Fan.
1.5. Relative humidity above 90%
1.6. Sudden ductwork bends or transformations close to the Unit.
2. All wiring to be in accordance with the current I.E.E.
Regulations, or the appropriate standards of your country and
MUST be installed by a suitably qualified person.
3. The fan must be provided with a 3A fused, isolator switch
capable of disconnecting all poles, having a contact
separation of at least 3mm.
4. Ensure that the mains supply (voltage, frequency, and phase)
complies with the fan’s rating label.
5. The fan should not be used where it is liable to be subjected
to direct water spray.
6. This appliance can be used by children aged from 8 years and
above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have
been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.
7. Precautions must be taken to avoid the back-flow of gases into
the room from the open flue of gas or other fuel-burning
appliances.
8. Children of less than 3 years should be kept away unless
continuously supervised.
9. Children aged from 3 to 8 years shall only switch on/off the
appliance provided the unit is installed as intended for
normal operation and they have been given supervision or
instruction concerning safe use of the appliance and
understand the hazards involved.
10. Children aged 3 to 8 shall not plug in, regulate and clean the
appliance or perform user maintenance
Caution - some parts of AIR+PIV/L with heater model can become
very hot and cause burns. Particular attention has to be given
where children and vulnerable people are present.

3
A. INTRODUCTORY NOTES
The Airtech Air+ PIV is a positive input ventilation unit, designed to be
installed in the loft of a dwelling to continually supply filtered fresh air
into the building.
The system consists of a fan unit, a heater unit AIR+PIV/L model Only and a
diffuser with a short length of flexible ducting.
The Airtech Air+ PIV has two fully adjustable speed settings; ‘Trickle’ and
‘Energy Recovery’. These speeds are set during installation; there are 5 pre-
set speeds or an option allowing the speeds to be chosen manually from 10L/s
to 60L/s.
The Airtech Air+ PIV uses a sensor to monitor the temperature in the loft,
automatically adjusting the air volume when necessary.
 The fan will run in ‘Trickle’ speed when the ambient loft temperature is
less than 18°C (adjustable via the Trickle Speed Temperature Threshold
setting).
 The fan will run in ‘Energy recovery’ speed when the ambient loft
temperature is between the Trickle Speed Temperature setting (default
18°C) and Temperature Limit setting (default 27°C).
 If the ambient loft temperature exceeds the Temperature Limit setting
(default 27°C), the fan will automatically switch to standby (no
airflow).
 If the ambient loft temperature is below -5°C, the fan will
automatically switch to standby (no airflow).
 Remote Purge/Boost is achievable by using the Boost Switch Link
Connector (sold separately –411150).
The heater (if applicable) will activate when the ambient loft temperature is
below the Heater Threshold Temperature set point (default is 10°C). The set
point can be adjusted between 5°C and 20°C. The heater is designed to try and
maintain the heater set point temperature, however will depend on the chosen
flow rates and temperature of the incoming air.
The unit also incorporates a data logging function. This function will display
total runtime of system, time spent in trickle speed, time spent in Energy
Recovery speed, approximate energy consumption of the fan and approximate
energy consumption of the heater unit AIR+PIV/L model Only. This data is non-
resettable.


4
INSTALLATION
TYPICAL INSTALLATION

















Air+ PIV UNIT:
Prior to installation ensure that the loft is adequately ventilated. The
following tips can be used as a basis for this. However this is not an
exhaustive list.
Ensure that any ridge vents, tile vents and continuous air gaps are not
blocked. These may not be present in older properties; however there should be
enough ‘leakage’ to accommodate the requirements of the Air+ PIV unit.
One method of checking this is by entering the loft, closing the loft hatch,
switching off the lights and looking for any daylight penetration. If daylight
is visible it is reasonable to assume that there is adequate ventilation
within the loft.
There may well be occasions where a loft is so well sealed that additional
ventilation may need to be provided by the owner/occupier. This will not only
assist the operation of the Air+ PIV, but may also help to prevent future
expensive structural damage caused by inadequate air movement. It should be
noted that there can never be too much ventilation in a loft.
Ensure that all water tanks are covered and sealed.
Check that all water pipes are lagged.
Ensure that any extract fans are discharging to the outside and not into the
loft.
Check that the loft hatch is tightly sealed.
Ensure that all holes in the ceilings are sealed, i.e. ceiling light fittings
etc.
A visual inspection of any flues or chimneys for leakage in the loft should be
carried out by the installer.
If any leakage points are found, or if there is any doubt at all, the
installer should advise the house owner/provider as soon as possible and seek
instruction from them before proceeding with the installation.
Flexible ducting is supplied as standard. Ensure that this is pulled out and
does not allow any moisture to collect; it should be a smooth single curve to
the grille. If the application requires a fixed 90 degree bend, straight
ducting may be used. See Spares and Accessories on page 13.


Fig.1.

5
Hanging method:
The Air+ PIV can be hung from a roof beam (Fig. 2). Fix the screw eye to a convenient
roof beam. Use the cord provided to loop through the eye and around the handle on the
unit, there are various notches for the cord to run through, tie the two ends together
using a suitable knot such as an over hand or fisherman’s knot.
Ensure that the route for the flexible ducting has gentle bends and that the duct
cannot be crushed. See Diffuser Grille Fitment section below for more information.
Fit the filters to the unit. Please make sure that the filter is fitted correctly.
This will ensure that all the fresh air entering the dwelling has passed through the
filter first.
Ensure that the screw eye is attached to the beam strongly enough and that the beam is
in sufficient condition to withstand the load. The unit weight is approximately 4 kg.
















Floor mounting:(USING ACCESSORY MOUNTING BASE – 477749 – Not supplied)
Find a suitable location to fix the unit near to where the diffuser is to be located.
Ensure that the route for the flexible ducting has gentle bends and that the duct
cannot be crushed.
Affix the mounting base to a wooden board or two lengths of timber which can then be
screwed to the joists.
Place the unit in the mounting base cradle; two retaining pins hold the unit in place.
Fit the filters to the unit. Please make sure that the filter is fitted correctly.
This will ensure that all the fresh air entering the dwelling has passed through the
filter first.
















Filters
Fig. 4.
Fig.2.
Fig. 3.

6


DIFFUSER GRILLE:
The diffuser must be carefully sited to ensure the maximum effectiveness of the
system. It should be fitted in the ceiling of a common area, ideally above the landing
so that the incoming air can reach all the rooms.
Cut the flexible ducting to a suitable length, where possible stretch the ducting to
its maximum extent and ensure that there is one continuous smooth bend to the
diffuser. The ducting must remain a minimum of 1m in length.
Remove the loft insulation from the location of the diffuser and cut a 240-260mm dia
hole in the ceiling.
Ensure the four locking tabs are folded in and then push the spigot in to the hole.
Holding the diffuser in place; screw the four screws until the locking tabs are
holding the diffuser tight against the ceiling. Fig. 5 It is important not to over
tighten these screws as this may warp the diffuser.
Fit the free end of the flexible ducting to the diffuser spigot using the worm drive
clip supplied. (Fig 7)
IMPORTANT – SMOKE DETECTORS: The diffuser should not be situated within 1m of
a smoke detector, however if this is not possible the AIR+ PIV
has provisions to blank off the airflow for up to two quadrants of the
diffuser. Two blanking plates are provided; these should be pushed on to the
support struts inside the diffuser as required. This should be done before the
diffuser is installed in the ceiling as when the screws are tightened down the
plates can no longer be removed. See Fig.6, showing blocking off opposing
quadrants, note any 1 or pair of quadrants can be blocked off as necessary for
the install. These block off plates can also be used to ensure the supply air
is spread across a room rather than directed at close by walls.
Blanking off one side reduces the flow by about 6%, but blanking off two sides
reduces the flow by about 20% and so if two sides are blanked off then you
should consider increasing the fan speed to maintain the appropriate airflow.
Fig. 5. Fig. 6.

7
Apply worm drive clips
provided in positions
shown
Air filter
The Airtech Air+ is provided with G4 filters which are suitable for removing airborne
contaminants such as pollen and dust. Fit the 2 filters to each side of the unit.
Where improved filtration is required optional F7 filters can be used. These filters
are effective at removing finer particles such as particulate emissions from diesel
engines. In urban areas close to main roads F7 filters are advisable in order to
ensure the supply air is clear of these particles which are potentially harmful to
health.
Where F7 filters are fitted, please ensure the flow rate of the fan is as expected. F7
filters cause extra system resistance so it may be necessary to increase the fan speed
to compensate

Ducting fitment
Ensure the ducting is securely fixed to the diffuser and fan (or heater if applicable)
via the provided worm drive clips. (Fig 7)
Heater Unit – AIR+PIV/L Only
The fan/heater unit must not be located directly below a socket.



































Fig. 7.

8
C. WIRING
A MEANS FOR DISCONNECTION MUST BE INCORPORATED IN THE FIXED WIRING IN ACCORDANCE WITH
THE WIRING REGULATIONS.
WARNING: THE POSITIVE VENTILATIION UNIT AND ANCILLARY
CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER
SUPPLY DURING THE INSTALLATION / OR MAINTENANCE.
The Air+ PIV is designed for operation from a single-phase alternating current source
(220-240V AC).
Mains supply voltages (220-240V ac) are present in this equipment which may cause
death or serious injury by electric shock. Only a qualified electrician or installer
should connect the power supply to this unit.
A 2m integral mains flying lead is connected to the unit for connection to a spur. It
should be capable of disconnecting all poles, having a contact separation of at least
3mm.
WARNING: If the supply cord is damaged, it must be replaced
by the manufacturer, its service agent or a similarly
qualified person in order to avoid a hazard
 Ensure the local AC power supply is isolated.
 The product has a pre-wired flying lead. Connect the brown core to Live and the
blue core to Neutral.
 Use cable clamps and clips to secure the cable, as appropriate.
















IMPORTANT:
In order to have the product
switch off in the event of a fire
it must be wired using a smoke
alarm with a relay system.
Use Fig.9 as a reference and
refer to the instructions
provided by the manufacturer of
the smoke alarm and relay in
order to wire the unit correctly.
Ensure the relay works correctly
by testing the fire alarm; the
unit should switch off when the
alarm is sounding.
Fig.8
Fig. 9.

9
Boost Switch Link Connector option (Ref:- 411150)
IMPORTANT:
Do not connect mains or any other device to the remote boost cable. It is only
intended to be linked via a remote volt free switch to activate the boost
function.
1) Connect the boost cable (supplied with 411150) to the connector under
the display (on the fan).
2) Wire the boost switch to the two terminals within the junction box.
Ensure the cable is secured properly. The switch links the two wires
together to activated boost remotely. Once deactivated the fan overruns
for the set timeout period (*see bst timer within the fan menu).
a. Normally open – normal mode/trickle
b. Closed link – boost is activated.
*Within the fan menu “bst” can be set to have an overrun timer of either 0,
1hr, 2hr, 4hr, 8hr.
























10
D.START UP SEQUENCE
When the unit is switched on it will first run through a period of system checks.
During this time the display will show various system parameters before the fan motor
starts. After 10 seconds the product will be ready for commissioning.
E. COMMISSIONING
Accessing the Commissioning Menu
If the fan is powered and the display is not lit, then press any button to access the
menu. After 30 seconds without menu activity the display will switch off; any new
settings will then be applied.
There are three buttons on the front of the unit:




The + button is used to increase the value of a setting, the – button is used to
reduce the value of a setting and the SET button moves to the next menu item.
Commissioning Menu Structure


































+
-
SET

11
Speed Settings
The Air+PIV has two speed settings, ‘Trickle’ and ‘Energy Recovery’.
 ‘Trickle’ speed is automatically selected when the ambient loft
temperature is below the Trickle Speed Temperature Threshold setting.
Default setting is 18°C.
 ‘Energy Recovery’ is automatically selected when the ambient loft
temperature is between the Trickle Speed Temperature (default is 18°C)
and Temperature Limit setting (default is 27°C).
 If the ambient loft temperature exceeds the Temperature Limit setting,
the fan automatically switches to standby (no airflow) - except when
Radon Mode is enabled. See Radon Mode below for more details.
 If the input air is below -5°Cthe fan will switch to standby.
There are 5 pre-set speeds that can be selected based on number of bedrooms in
the property. For example, setting b03 being for a three bedroom dwelling.
Please see Fig.10 for the approximate flow rates at each setting.
Alternatively, the speed settings are also fully adjustable between 10L/s and
60L/s via the manual speed setting option.
*The table shows a set up representative of a good low resistance installation
using the supplied filters. When F7 filters and/or a long duct run are used it
may be necessary to use the manual speed selection to meet the required flow
rate.
The Air+PIV must be set to provide adequate ventilation according to Part F of
the building regulations.
Heater Threshold Temperature
This is the temperature at which the heater will switch on. Default is 5°C.
The higher the temperature setting/threshold, the more energy the heater will
use. However the lower the setting, the colder the air will be supplied into
the house. The heater modulates (switches on/off) to maintain the set heater
threshold temperature.
Lock feature
The menu lock feature will prevent the unit from being adjusted after
commissioning as a pass code is required to access the menu. This can be set
in the menu to any 3-digit hexadecimal combination.
If the lock feature is enabled; when a button is pressed the display will
show, – – –. At this point enter the three-digit code by first pressing + or –
until the first digit is correct then press SET to move to the next digit.
Repeat until the code is entered and press SET to enter the commissioning
menu. If the code is entered incorrectly, wait until the screen switches off
then press any button to begin again.
Radon Mode
Radon mode keeps the fan running even at high temperatures to prevent the
build-up of dangerous radon gas in the property. If this is not required, it
is recommended not to use this setting.
Fig.10 Trickle* Energy
Recovery*
No. Bedrooms Setting L/s L/s
1 b01 13 25
2 b02 17 31
3 b03 21 38
4 b04 25 44
5 b05 29 50

12
Trickle Speed Temperature Threshold
The temperature the fan will switch from Energy Recovery Mode to Trickle mode.
Usually this would be set to around 18-20°C to be slightly cooler than the
normal heating thermostat temperature. Default is 18°C.
Temperature Limit
This is the maximum temperature the fan will run until going into standby. The
higher the temperature the more heat will be extracted from the loft. Default
is 27°C. Note that this limit is ignored in radon mode.
Accessing Data Logger Menu
To access the menu of data that the unit stores press and hold the set button
for 5 seconds. The menu structure is shown below, press SET to move to the
next item:
To exit the menu press SET for 5 seconds or wait for the screen to switch off.

Display: tot run – 0y – 00d
Description: total unit run
time in years and days
Display: hEAt EnErGy - 00
Description: Total energy
consumption of the heater in
kWh
Display: Fan EnErGy - 00
Description: Total energy
consumption of the fan in
Wh
Display: nor run – 0y – 00d
Description: Total time
spent at Energy Recovery
s
p
eed
Display: trI run – 0y – 00d
Description: Total time
spent at trickle speed
5 second press
of Mode

13
E. SERVICING AND MAINTENANCE.
WARNING: THE POSITIVE VENTILATIION UNIT AND ANCILLARY
CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER
SUPPLY DURING THE INSTALLATION / OR MAINTENANCE.
The fan motor uses sealed ball bearings, and does not require further
lubrication.
Apart from filter change the AIR+PIV contains no user serviceable parts.
Filter: Under normal conditions, i.e. away from main roads and industrial
areas, it is recommended that the filter is checked annually and cleaned or
replaced as necessary. Otherwise change as required. (See Spares part list
below)
The filter may be gently cleaned with a vacuum cleaner or washed in a soapy
water solution and allowed to air dry before re-fitting. Do not dry the
filter in a tumble dryer.
When re-fitting make sure that the filter is fitted correctly. This will
ensure that all the fresh air entering the dwelling has passed through the
filter first.





Below is a list of spares and accessories available for the Air+ PIV:
Spares and Accessories Part Number
F7 FILTER PACK 477957
MOUNTING BASE ASSEMBLY 477749
HANGING KIT 477893
REPLACEMENT G4 FILTER PACK 477891
200mm DIAMETER 2m FLEXIBLE DUCTING 477955
REPLACEMENT DIFFUSER 478228
PURGE BOOST SWITCH LINK CONNECTOR 411150

14


15


16




Disposal
This product should not be disposed of with household waste. Please recycle
where Facilities exist. Check with your local authority for recycling
advice.































AIRTECH ENVIRONMENTAL SYSTEMS
STATHE ROAD, BURROWBRIDGE, SOMERSET, TA7 0RY
Tel : [phone]

EU Authorised Representative: Airtech Solutions Sigarenmaker 5 - 5521DJ Eersel Nederland [email protected]

477591 P 0223
