Nuaire Dri-eco-hc User Manual
DRI-ECO-HC
Whole House Ventilation Unit with Hall Control
Installation and Maintenance
1.0 INTRODUCTION
The DRI-ECO-HC provides whole home ventilation using the Positive Input Ventilation principle. The concept is to introduce fresh, filtered air into the dwelling
at a continuous rate, encouraging movement of air from inside to outside.
To achieve this the unit is mounted in the loft space, drawing air through the
filters and inputting it, at ceiling level, into the property.
The DRI-ECO-HC fan unit includes an internal sensor to regulate the fan speed
according to the temperature of the loft. The internal sensor is to increase
airflow to the dwelling when the loft is warmer than the house. The units ‘Fixed
Temperature Heat Recovery’ strategy shall be achieved via a sensor located in
the unit and shall improve energy performance accordingly. This unit has all
of the controls for the fan in the ceiling vent allowing the user to control, programme and monitor the unit from inside the property.
Once installed, the airflow can be set to suit the house size and, if required, the
way it responds to the temperature changes within.
2.0 IMPORTANT NOTES TO INSTALLERS
Successful operation of the fan depends entirely upon the unit being installed
strictly in accordance with these instructions.
Please read through this guide in its entirety before commencing installation and
follow step by step to ensure a satisfactory completion.
Whilst the installation of the DRI-ECO-HC unit may be achieved by suitable
persons, the provision of the electrical supply and the connection of the unit to
the mains must be carried out by a qualified electrician.
Warning: Isolate from power supply before removing any covers. During installation/maintenance ensure all covers are fitted before switching on the mains
supply.
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.
The EMC Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
4.0 DIFFUSER INSTALLATION
4.1 Siting the Diffuser Position
The diffuser has a unique air throw pattern and it is essential that it is located
correctly in the central hallway in single storey properties or in the ceiling of the
top floor landing on 2 or more storey dwellings.
The diffuser discharges air evenly in all directions along the underside of the
ceiling.
Speed Setting Minimum distance of diffuser from wall
1 100mm
2 155mm
3 400mm
4 625mm
5 850mm
6 1000mm
Note: SMOKE ALARMS -It is also important to ensure that the diffuser is
NOT placed within 1 metre of a smoke alarm.
If the diffuser cannot be repositioned, two sides of the diffuser must be closed
off using the air dams supplied to encourage the air through the remaining open
sides that faces at least 1.5 metres of unobstructed area away from the smoke
alarm sensor.
4.2 Fitting the Air Dams (If Required)
Air dams should be fitted where needed in order to alter the direction of airflow.
2 air dams are supplied and will fit on any of the diffuser sides to guide airflow
away from a smoke detector and/or obstructions.
Airow
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.
Means for disconnection must be incorporated in the fixed wiring as shown in
the wiring diagram in accordance with IEE wiring or national wiring rules.
CAUTION: In order to avoid a hazard due to inadvertent resetting of the thermal
cut-out, this appliance must not be supplied through an external switching
device, such as a timer, or connected to a circuit that is regularly switched on
and off by the utility.
3.0 LOFT INSPECTION
Check to ensure that the loft has adequate ventilation. There may be occasions
where a loft is so well sealed that additional ventilation may have to be provided
by the owner/occupier.
Ensure that all water tanks are covered and sealed.
Check that all water pipes are lagged.
Ensure that any extract fans are discharging to 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, then the installer
should advise the house owner/provider as soon as possible and seek instruction
from them before proceeding with the installation.
Ceiling Vent
Two Air Dams (supplied) can t on any of the diuser sides to guide
airow away from a smoke detector and/or obstructions as required.
Airow
Diuser Cap
4.3 Fitting the Ceiling Diffuser
To install the diffuser, use the tear-out template from the lid of the unit packaging and trace the shape onto the ceiling between two convenient joists. The
shape is elliptical to allow space for the PCB of the controls and this should be
positioned for ease of access (i.e. NOT facing over a stairwell). Once the shape
has been cut out, position the ceiling vent and secure it in place using the 4
screws and plugs provided. After fitting, the fan unit must be connected to the
diffuser using the loom provided. The connectors are located on the rear of the
ceiling vent and the rear recess of the fan unit.
Finally attach the diffuser cap to the frame using the four built-in press on clips
provided.
21. 12. 17. Leaflet Number 671755nuaire.co.uk 029 2085 8400
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DRI-ECO-HC - Installation and Maintenance
5.0 FITTING THE FILTERS
The filter has a push fit rim to attach itself to the main body of the unit. Offer
the filters up to the unit and apply a small amount of pressure to the filters rim
(by hand). The filter will clip into place.
The unit can then be attached to the roof via the cord provided (or fixed to the
floor joists using the optional anti vibration mounting kit).
Place anti-vibration mounts above and below each batten fixing point and, using
the 4 large screws and special washers, fix the unit to the joists.
Do not overtighten the fixings. The distance from the top washer to the joist
when installed must not be less than 50mm.
6.0 DRI-ECO-HC INSTALLATION
6.1 Joist Hung (Standard Mounting)
The standard method of installation is to suspend from a convenient roof beam
via the cord supplied (Note: unit weight = 3.5 kg). The method of locating the
cord to the roof timber is the responsibility of the installer.
The flexible duct (maximum length 2m) is connected to the fan unit by inserting
the duct over the fan outlet and held in place using the supplied cable tie. This
method is repeated when connecting the duct to the ceiling vent. Note: Ensure
all duct joints are airtight.
Please note: The flexible ducting should NOT be installed in a compressive
state, as this will negatively impact on the performance of the unit.
7.0 ELECTRICAL CONNECTION
Please note: the electrical connection of the unit must be be carried out by a
qualified electrician.
Electrical details:-
Voltage: 230V 1ph 50Hz
Consumption: 1.6W(min) 15.3W(max)
Fuse size: 1 Amp
The fan unit is also supplied with a fused spur. The three core mains cable from
the unit should be connected to a fixed wiring installation, via the spur, in accordance with current IEE wiring regulations.
6.2 AV Mounting (Optional)
The AV kit contains all the parts necessary to complete a joist mounted installation. If AV mounting is required, the kit can be purchased direct from Nuaire
using the following code number: 771393.
Lower the unit with battens (battens are not supplied by Nuaire) attached onto
the joists. Mark and drill the 12mm dia. clearance holes required in the ends of
the battens.
Disconnection from mains must be incorporated within the fixed wiring and shall
have a maximum contact seperation of 3mm in accordance with latest edition
of the wiring regulations.
IMPORTANT
For good EMC engineering practice, the DRI-ECO-HC power
supply output cable and any sensor cables should not be
placed within 50mm of other cables or each other.
nuaire.co.uk 029 2085 8400 21. 12. 17. Leaflet Number 671755
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