Nuaire Group DRIMASTER Instruction Manual

Nuaire Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk
DRIMASTER and
DRIMASTER-3S
Anti-Condensation & Whole House Ventilation Unit
Installation and Maintenance
Important notes to installers
The Nuaire Drimaster range has been curing severe
condensation problems for over 20 years in some of the worst
affected properties throughout the world.
Its successful operation depends entirely upon the unit being
installed strictly in accordance with these instructions.
We would, therefore, respectfully suggest that you read through
this guide in its entirety before commencing installation and then
go through this guide step by step to ensure a satisfactory
completion.
Whilst the installation of the Drimaster unit may be achieved by
a suitable craftsman, the provision of the electrical supply and the
connection of the unit to the mains must be carried out by a
qualified electrician.
The unit has a 5 year warranty starting from the day of delivery and
includes parts and labour for the first year. The remaining 4 years
covers parts only. This warranty is conditional on the following:-
a) That the unit is installed strictly in accordance
with this guide.
b) That the unit filters are removed and cleaned or replaced
at the recommended intervals.
c) If a floor is higher than 4.5m the requirements in sections
3.2 and 8.1 must be followed.
The unit represents a significant financial outlay on the part of the
user/specifier and the unique 5 year guarantee is important to them.
We make a point of advising them that the installer is provided with
detailed instructions regarding installation/guarantee registration
and therefore has the responsibility of ensuring that the unit is
guaranteed for the user/specifier.
Operation
The Drimaster provides whole home ventilation using the Positive
Input Ventilation principle. Essentially 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 Drimaster units are fitted with an internal temperature sensor.
This sensor continuously monitor the temperature in the loft,
boosting the air volume when the loft temperature is above a set
level (heat recovery mode).
If the loft temperature becomes excessive the unit will switch to
standby mode (no airflow).
Once installed, the airflow can be set to suit the house size and, if
required, the way it responds to the temperature changes within.
1.0 Loft Inspection
Check to ensure that the loft has adequate ventilation. Look for
ridge vents, tile vents, eaves vents and continuous air gaps etc.
making sure none are blocked. In older properties these vents may
not be provided. However, there should be enough ‘leakage’ to
accommodate the requirements of the Drimaster unit. A useful way
of checking such lofts is to close the hatch, switch off the lights
and look for any daylight penetration. If you can see daylight it is
reasonable to assume that the loft has ventilation.
There may be occasions where a loft is so well sealed that additional
ventilation may have to be provided by the owner/occupier. This will
not only assist the operation of the Drimaster, but will help prevent
possible expensive structural damage caused by inadequate air
movement in the loft itself. It should be noted that there cannot be
too much ventilation into the 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 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.
2.0 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.
As can be seen in figure 2 the diffuser discharges air evenly from all
four sides along the underside of the ceiling.
Figure 2. Diffuser (viewed from below).
Figure 1.
1Leaflet Number 671104 November 2011
The EMC Directive
2014/30/EU
The Low Voltage
directive
2014/35/EU
Airflow from four sides
Speed Setting Minimum distance of diffuser from wall
1 100mm
2 155mm
3 400mm
4 625mm
5 850mm
6 1000mm
Note: The positioning of
the diffuser should be in
strict accordance with the
table shown below to
ensure correct operation:-

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 foam strips 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.
Figure 3. Fitting the 2 foam strips.
3.0 Fitting the Diffuser
3.1 Plastic Type
Cut a circular hole 225mm diameter in the ceiling between two
convenient joists. Position the diffuser frame and secure it to the
underside of the ceiling with the 1 1/2“ x 8 csk. hd. screws and plugs
provided.
Attach the diffuser plate to the frame using the four built in press on
clips provided.
Foam strips should also be used as required when this method of
installing the diffuser is used.
3.2 Painted aluminium type c/w intumescent
fireblock
Cut a 200mm hole in ceiling and align the top portion of unit (A)
above the ceiling over the hole.
Position the central ceiling plate (B) on the ceiling in the room
ensuring the the central hole is aligned with thehole in the ceiling.
Use the 4 MS X 35mm screws to fix (B) to (A) through the 4 studs
positioned on the upper side of (B).
Screw bottom part of the unit (C) to the the ceiling plate (B) through
the plastic spacers and into the 2 studs positioned on the upper
side of (A).
4.0 Fitting the filters to the unit
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 chain (or fixed to
the floor joists using the optional anti vibration mounting kit).
5.0 Fitting the Drimaster Unit
The standard method of installation is suspended from a convenient
roof beam via the cord/chain supplied.
(Note: unit weight = 3.2 kg).
The method of locating the wire to the roof timber is the responsibility
of the installer.
The flexible ducting fitted to the fan unit is connected to the outlet
diffuser spigot by securing the end over the spigot using the tie
band supplied. Ensure all duct joints are air tight.
6.0 Optional AV mounting
The AV kit contains all the parts necessary to complete a joist
mounted installation. If this option is required the kit can be
purchased direct from Nuaire using the following code number:
771393.
Lower the unit with the battens attached onto the joists (see
Figure 6). Mark and drill the 12mm dia. clearance holes required in
the ends of the battens (not supplied). Figure 7. shows a sectional
view of the fixing.
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.
Installation and Maintenance DRIMASTER/DRIMASTER-3S Anti-Condensation & Whole House Ventilation
4 Diffuser frame
fixing screws
Press on bottom
Diffuser plate
2 Foam strips (supplied) fit on any of the diffuser sides to guide airflow
away from a smoke detector and/or obstructions as required.
Airflow from two sides
2Leaflet Number 671104 November 2011
Figure 4.
Figure 5. Standard method of fixing.
Figure 6. Optional method of fixing. (AV mounting kit onto
roof joists).
Figure 7. Sectional view of AV mounting.
Washer 3” Woodscrew
A.V.
mount
A.V.
mount
Batten
25x50
Ceiling
joist
.
.
.
.
.
50mm
min.
12mm
clearance
hole
Note: Due to the higher air resistance of the fireblock, the speed of
the unit should be increased by one increment for the particular
property (see 9.0 speed setting).
Spacers
Ceiling
Hole in ceiling
200mm dia.
(C)
(B)
(A)
4 x MS X 35mm
screws
Studs
Fixing (C) to (B)

Installation and Maintenance DRIMASTER/DRIMASTER-3S Anti-Condensation & Whole House Ventilation
3Leaflet Number 671104 November 2011
7.0 Filter maintenance and replacement
The filters will require no maintenance over the five year period but
will need to be replaced after this period. New filters can be purchased
direct from Nuaire using the following code number: 775631 (five
year filter).
If the units performance has been reduced dramatically or black
dust becomes visible around the outlet diffuser, check that the filter
has not become dislodged in any way.
8.0 Electrical Connection
Please note: the electrical connection of the unit must be be carried
out by a qualified electrician.
Electrical details:-
Voltage: 240V 1ph 50Hz
Consumption: 1.6W(min) 15.3W(max)
Fuse size: 1 Amp
The unit is supplied with a pre-wired power supply. This power
supply unit has a metal bracket incorporating fixing holes, which
should be used to fit the power supply to a suitable surface e.g. a
wooden joist.
The fan unit is also supplied with a fused spur. The two core mains
cable from the power supply should be connected to a fixed wiring
installation, via the isolator, via the spur, in accordance with current
IEE wiring regulations.
8.1 Smoke /Carbon monoxide alarm automatic
shut down
If the unit is required to switch off in the event of smoke/CO
detection, alarms are available with separate relay bases from
companies such as:
Dicon Safety products – www.diconsafety.co.uk
Aico Ltd – www.aico.co.uk
Note: This is a mandatory requirement for all 3S units.
Figure 8. Typical wiring
(refer to manufactures own specific instructions)
For good EMC engineering practice, the Drimaster power
supply output cable and any sensor cables should not be
placed within 50mm of other cables.
Mains power Smoke/Co detector
with No/Nc contacts
N
L
Drimaster
Power supply Drimaster
fan unit
L N C NC NO
230V
Supply
230V 24V

Installation and Maintenance DRIMASTER/DRIMASTER-3S Anti-Condensation & Whole House Ventilation
4Leaflet Number 671104 November 2011
9.0 Speed Settings
The unit has 6 Air Volume (speed) settings. The setting switch is
located on the side of the unit . Fig. 9 shows the LED’s that, when
illuminated, indicate the corresponding Air Volume from the unit.
As an example, for a one bedroom bungalow, the unit should be set
onto the lowest setting (two lights on left). A five bedroom detached
house would need to be set on the highest speed (all three LED’s
illuminated).
Figure 9. Setting Switch/indicator panel on unit.
10.0 Selecting the Speed
When power to the unit is switched on (via the supplied isolator)
the three LED’s will flash simultaneously.
Press the setting button once and let go. The unit will start to run.
You can now press the button to sequence through the available
speeds.
11.0 Temperature Default Settings
When delivered the unit is set to a factory default setting that will
allow the unit to operate for general applications (option 1).
When power to the unit is switched on (via the supplied isolator)
the three LED’s will flash simultaneously for a period of 2 minutes.
The unit will then settle to the default set at the factory. The LED’s
will cease to flash and the default setting LED’s will remain
illuminated showing the default speed.
12.0 Selecting the alternative
Temperature Control Options
When power to the unit is switched on (via the supplied isolator)
the three LED’s will flash simultaneously and the unit will function at
boost speed for a period of 2 minutes. (This allows the installer to
get from the switch to the Drimaster Unit before it starts on it’s
default setting).
With the LED’s still flashing, press the setting button and hold it
down. The LED’s will run through their sequence (LED’s change
every 4 seconds) and you can now select the Temperature Control
Function removing your finger from the button when the centre and
right hand LED’s are both illuminated. (See fig 10).
Figure 10. LED’s showing Temp Control function selected.
13.0 Temperature Control options
IMPORTANT
To select the option required, scroll through the Control Options
until the desired Option is illuminated.
Now SWITCH OFF at isolator, Wait for LED’s to extinguish
(approx 10 seconds) then SWITCH ON.
This action stores the chosen option in the unit’s memory.
Setting the option
The Temperature Control Function has 5 options:
Option 1 (Default)
At loft temperatures below 19oC the unit will operate on “Normal
Operation Mode” At loft temperatures above 18oC but less than
24oC, the unit will switch automatically to “Intelligent Heat
Recovery Mode” At loft temperatures above 23oC the unit will
switch itself automatically to “Standby Mode”.
Option 2
At loft temperatures below 19oC the unit will operate on “Normal
Operation Mode” At loft temperatures above 18oC but less than
31oC, the unit will switch automatically to “Intelligent Heat
Recovery Mode” At loft temperatures above 30oC the unit will
switch itself automatically to “Standby Mode”.
Option 3
This option removes the temperature sensing function out of the
unit. On this option the unit will operate continuously in ‘Normal
Operation Mode” depending on the volume control setting selected.
Option 4
At loft temperatures below 16oC the unit will operate on “Normal
Operation Mode” At loft temperatures above 15oC but less than
28oC, the unit will switch automatically to “Heat Recovery Mode”
At loft temperatures above 27oC the unit will switch itself
automatically to “Standby Mode”.
Option 5
At loft temperatures below 19oC the unit will operate on “Normal
Operation Mode” At loft temperatures above 18oC but less than
24oC, the unit will switch automatically to “Heat Recovery Mode”
At loft temperatures above 27oC or below 5oC the unit will switch
itself automatically to “Standby Mode”.
Notes:
Speed Setting 1 is not available for Temperature Control Option 5.
On selecting Temperature Control Option 5, Speed Setting 1, the unit
will operate as Speed Setting 2.
Do not use this option if an integral optional heater has
been fitted.

Installation and Maintenance DRIMASTER/DRIMASTER-3S Anti-Condensation & Whole House Ventilation
CONGRATULATIONS!
Your home has been fitted with
a Nuaire Drimaster Home
Improvement Unit
Users Guide
Q. What is a Nuaire Drimaster Home Improvement Unit?
A. It is a small, loft mounted, air cleaning/moving device that
continuously inputs filtered fresh air into the dwelling from
outside. The only ‘visible’ component when installed is the central
input diffuser which is usually located in the central hallway/
stairwell ceiling.
Q. What does the unit do?
A. The unit will cure and/or prevent the problems associated with
condensation in your home, providing a cleaner, healthier living
environment for all occupants. The unit will prevent mould
growth on walls, ceilings, furniture, clothes and curtains.
The unit also eradicates the musty smells evident in homes with
severe condensation problems.
Q. How does it work?
A. Simply and very efficiently. Outside air is drawn into the loft
where it is slightly warmed by the free heat in the loft caused by
solar radiation and the heat lost from the property into the loft.
This air is drawn into the unit, filtered and then ducted into a
central area (typically the hallway / stairwell) of the dwelling.
As the air is supplied into the dwelling it mixes with the warmer
air that naturally accumulates at ceiling level taking advantage
of the heat from this warm air you have paid for but are not
making use of. This tempered, fresh, clean air then continuously
and gently dilutes, displaces and replaces the air within your
home. The result is a home free from serious condensation and a
more pleasant and comfortable environment.
Q. How much does it cost to run?
A. When you consider the advantages the unit will provide for you
and the other occupants, the running costs are insignificant.
It should be remembered that the unit is making use of heat in
both the loft and at ceiling level that would otherwise be lost.
Note: the unit will switch itself off when temperatures are such
that condensation would not occur within your home i.e. in
summertime.
Q. How do I operate the unit?
A. You don’t. The unit is completely automatic, switching from
‘normal’ to ‘boost’ and ‘off’ as required to make optimum use of
energy
Q. What maintenance is required for the unit?
A. Very little. The only maintenance required is the replacement of
the filters every 5 years. (The filter can also be vacuum cleaned
periodically if necessary).
Q. How will I remember to clean the filters?
A. When the filters become dirty, the unit does not input as much air
into the dwelling, Condensation and musty smells may become
evident. This will be a signal for you to check and clean or replace
the filters as necessary.
Q. How will I know if the unit is working?
A. The unit motor may be almost inaudible but you should notice a
change of atmosphere in the hallway within a day or so. ‘Within
a few weeks any mould should start to dry out and eventually
become a grey powder which can easily be cleaned. After a
month your home will be a healthier environment free from
severe condensation dampness and probably more efficient.
Q. What do I do if the unit stops working?
A. If the unit appears to have stopped working and there are no
related condensation problems,then it is likely that the unit has
switched itself off automatically to save energy, for example, in
summer. If however, the unit is not working and there is evidence
of condensation please contact our:
Customer Services Department
on 02920 858 585
If you are a Housing Association or Local Authority tenant however,
you should contact your Local Housing Office in the first instance.
The installation must only be examined by a qualified electrician
and must always be isolated before an inspection. Under no
circumstances must the unit be dismantled as this will invalidate
the warranty.
Useful tips
To ensure you get the maximum benefit from your Nuaire
Drimaster Home Improvement Unit:
1. Avoid drying clothes on radiators or indoor clothes lines.
2. Avoid having tumble dryers venting into your home.
Always vent to outside.
3. Avoid using portable unflued gas heaters.
4. Avoid using paraffin heaters.
Finally, thank you for taking the time to read this short user
guide. If you are happy with your Drimaster Home Improvement
Unit, please tell your friends and neighbours.
If you are not - Please tell us!
5Leaflet Number 671104 November 2011
Technical or commercial considerations may, from time to time, make it necessary to alter the design, performance and
dimensions of equipment and the right is reserved to make such changes without prior notice.

6Leaflet Number 671104 November 2011
DECLARATION OF INCORPORATION AND INFORMATION FOR SAFE INSTALLATION,
OPERATION AND MAINTENANCE
To comply with EC Council Directives 2006/42/EC Machinery Directive and
2014/30/EU(EMC).
To be read in conjunction with the relevant Product Documentation (see 2.1)
1.0 GENERAL
1.1 The equipment referred to in this Declaration of Incorporation is supplied by
Nuaire to be assembled into a ventilation system which may or may not include
additional components.
The entire system must be considered for safety purposes and it is the
responsibility of the installer to ensure that all of the equipment is installed in
compliance with the manufacturers recommendations and with due regard to
current legislation and codes of practice.
2.0 INFORMATION SUPPLIED WITH THE EQUIPMENT
2.1 Each item of equipment is supplied with a set of documentation which provides
the information required for the safe installation and maintenance of the
equipment. This may be in the form of a Data sheet and/or Installation and
Maintenance instruction.
2.2 Each unit has a rating plate attached to its outer casing. The rating plate
provides essential data relating to the equipment such as serial number, unit
code and electrical data. Any further data that may be required will be found
in the documentation. If any item is unclear or more information is required,
contact Nuaire.
2.3 Where warning labels or notices are attached to the unit the instructions given
must be adhered to.
3.0 TRANSPORTATION, HANDLING AND STORAGE
3.1 Care must be taken at all times to prevent damage to the equipment. Note that
shock to the unit may result in the balance of the impeller being affected.
3.2 When handling the equipment, care should be taken with corners and edges and
that the weight distribution within the unit is considered. Lifting gear such as
slings or ropes must be arranged so as not to bear on the casing.
3.3 Equipment stored on site prior to installation should be protected from the
weather and steps taken to prevent ingress of contaminants.
4.0 OPERATIONAL LIMITS
4.1 It is important that the specified operational limits for the equipment are
adhered to e.g. operational air temperature, air borne contaminants and unit
orientation.
4.2 Where installation accessories are supplied with the specified equipment eg.
wall mounting brackets. They are to be used to support the equipment only.
Other system components must have separate provision for support.
4.3 Flanges and connection spigots are provided for the purpose of joining to
duct work systems. They must not be used to support the ductwork.
4.4 In the event of RF interference the fan may change speed. This is normal and will
have no adverse effect on the fan. The speed will return to normal once the
interference has subsided.
5.0 INSTALLATION REQUIREMENTS
In addition to the particular requirements given for the individual product, the
following general requirements should be noted.
5.1 Where access to any part of equipment which moves, or can become electrically
live are not prevented by the equipment panels or by fixed installation detail
(eg ducting), then guarding to the appropriate standard must be fitted.
5.2 The electrical installation of the equipment must comply with the requirements
of the relevant local electrical safety regulations.
5.3 For EMC all control and sensor cables should not be placed within 50mm or on
the same metal cable tray as 230V switched live, lighting or power cables and
any cables not intended for use with this product.
6.0 COMMISSIONING REQUIREMENTS
6.1 General pre-commissioning checks relevant to safe operation consist of the
following:
Ensure that no foreign bodies are present within the fan or casing.
Check electrical safety. e.g. Insulation and earthing.
Check guarding of system.
Check operation of Isolators/Controls.
Check fastenings for security.
6.2 Other commissioning requirements are given in the relevant product documentation.
7.0 OPERATIONAL REQUIREMENTS
7.1 Equipment access panels must be in place at all times during operation of the
unit, and must be secured with the original fastenings.
7.2 If failure of the equipment occurs or is suspected then it should be taken out of
service until a competent person can effect repair or examination. (Note that
certain ranges of equipment are designed to detect and compensate for fan failure).
8.0 MAINTENANCE REQUIREMENTS
8.1 Specific maintenance requirements are given in the relevant product documentation.
8.2 It is important that the correct tools are used for the various tasks required.
8.3 If the access panels are to be removed for any reason the electrical supply to the
unit must be isolated.
8.4 A minium period of two minutes should be allowed after electrical disconnection
before access panels are removed. This will allow the impeller to come to rest.
NB: Care should still be taken however since airflow generated at some
other point in the system can cause the impeller to “windmill” even when
power is not present.
8.5 Care should be taken when removing and storing access panels in windy
conditions.
INFORMATION FOR SAFE INSTALLATION, OPERATION AND MAINTENANCE
OF NUAIRE VENTILATION EQUIPMENT
We declare that the machinery named below is intended to be assembled
with other components to constitute a system of machinery. All parts
except for moving parts requiring the correct installation of safety guards
comply with the essential requirements of the Machinery Directive. The
machinery shall not be put into service until the system has been
declared to be in conformity with the provisions of the EC Machinery
Directive.
Designation of machinery: DRIMASTER/DRIMASTER-3S
Machinery Types: Anti-condensation and whole
house ventilation unit
Relevant EC Council Directives: 2006/42/EC (Machinery Directive)
Applied Harmonised Standards: BS EN ISO 12100-1, BS EN ISO 12100-2,
EN60204-1, BS EN ISO 9001,
BS EN ISO 13857
Applied National Standards: BS848 Parts 1, 2.2 and 5
Note: All standards used were current and valid at the date of signature.
Signature of manufacture representatives:
Name: Position: Date:
1) C. Biggs Technical Director 8. 07. 11
2) A. Jones Manufacturing Director 8. 07. 11

7Leaflet Number 671104 November 2011
Installation and Maintenance DRIMASTER/DRIMASTER-3S Anti-Condensation & Whole House Ventilation
Notes

Technical or commercial considerations may, from time to time, make it necessary to alter the design, performance and
dimensions of equipment and the right is reserved to make such changes without prior notice.
Western Industrial Estate
Caerphilly United Kingdom
CF83 1NA
T: 029 2088 5911
F: 029 2088 7033
E: [email protected]
W: www.nuaire.co.uk
8Leaflet Number 671104 November 2011
Installation and Maintenance DRIMASTER/DRIMASTER-3S Anti-Condensation & Whole House Ventilation