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nuaire.co.uk

029 2085 8400

04. 11. 19. Leaflet Number 671859

Installation and Maintenance

MRXBOXAB-ECO2-AESW Mechanical Ventilation Unit with Heat Recovery

5.0 ELECTRICAL CONNECTION

IMPORTANT

For good EMC engineering practice, any sensor cables or

switched live cables should not be placed within 50mm of other

cables or on the same metal cable tray as other cables.

Please note: the electrical connection of

the unit must be carried out by a qualified

electrician.

The unit is supplied with a flexible cord for

connection to the mains supply.

Electrical details:-
Voltage: 240V 1ph 50Hz
Consumption: 1.2 Amp
Fuse rating: 3 Amp
NOTE This unit must be earthed.
The cable from the mains power supply

should be connected to a fixed wiring

installation, via a fused isolator, in

accordance with current IEE wiring

regulations.

EXTRA

EXTRA

CT F

CT F

Supply Extract Supply Extract Supply Extract

SPEED 1

SPEED 2

SPEED 3

Figure 14. PCB Details

Note: Wiring is for reference

purposes only as the connections

in fig. 14 are factory fitted. The

unit is pre-wired with a 2 metre

fly lead.

Fuse 2A

MAINS

230V

50Hz

light

Room

Light

switch

(Double

Pole)

3 Pole

isolator

Kitchen switch

Blue

Brown

Black

Optional 3 speed switch

Supply cord

from unit

Grey

Green/yellow

Fuse 2A

MAINS

230V

50Hz

Room

lights

Light

(Double

switches

Pole)

3 Pole

isolator

Kitchen switch

Blue

Green/yellow

Brown

Black

Supply cord

from unit

Optional 3 speed switch

Grey

Figure 15.

Unit serving kitchen and bathroom

Figure 16.

Disconnection from the supply

mains must be incorporated

within the fixed wiring in

accordance with the wiring

regulations and shall have a

minimum contact separation

of 3mm.

Disconnection from the supply

mains must be incorporated

within the fixed wiring in

accordance with the wiring

regulations and shall have a

minimum contact separation

of 3mm.

Unit serving kitchen and two bathrooms

5.1 Optional Controls -

For further information regarding optional controls, contact Nuaire on 02920 858 400.

Black

2 core cable
from unit

Red

Volt free Summer / Winter Switch (supplied with unit)
Polarity is inconsequential
Warning! - Do not connect to mains!

Figure 17. Summer / WInter switch

Connection of summer/winter switch

Содержание MRXBOXAB-ECO2-AESW

Страница 1: ...n with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning the use of the appliance by a person for their safety Children should be supervised so that they do not play with the appliance 2 1 Transportation fixings To prevent damage during transportation the product is shipped with securing fixings the...

Страница 2: ...ical example of a cupboard mounted unit Standard unit fixed to a stud partition with the MDF panel fixed behind the plasterboard 2 5 Condensate Drain The MVHR unit inside the enclosure is fitted with a straight coupling to allow 21 5mm overflow pipe not supplied to be attached using solvent cement the pipe should be passed through the flexible adhesive backed cover plate before the solvent cement ...

Страница 3: ...outside of the outside air inlet duct and the air outlet duct from the unit these ducts should be insulated Ducting must be installed in such a way that resistance to airflow is minimised Bends should be kept to a minimum A minimum distance of 300mm between the appliance and any bends in ductwork is recommended Ideally 125mm diameter or 220 x 90mm rectangular ducting should be used Refer to dwelli...

Страница 4: ...step 1 and step 2 Note that the maximum individual room extract rate should be at least those given in table 1 The minimum air supply rate should be at least the whole building ventilation rate found in step 1 For Scotland refer to BRE Digest 398 For further information refer to Domestic Ventilation Compliance Guide www planningportal gov uk buildingregulations approved documents partl compliance ...

Страница 5: ... duct 4 0 DUCTING ARRANGEMENTS STANDARD CONFIGURATION Figure 12 Typical ducted arrangement for a wall mounted unit using circular ducting Figure 13 Typical ducted arrangement for a wall mounted unit using rectangular ducting Air supply to lounge in ceilings via AirValve Extract air from kitchen bathroom in ceilings via AirValve Exhaust air from kitchen bathroom to outside via louvre grille Minimum...

Страница 6: ...ions in fig 14 are factory fitted The unit is pre wired with a 2 metre fly lead Fuse 2A MAINS 230V 50Hz light Room Light switch Double Pole N L 3 Pole isolator Kitchen switch Blue Brown Black Optional 3 speed switch Supply cord from unit Grey Green yellow Fuse 2A MAINS 230V 50Hz Room lights Light Double switches Pole N L 3 Pole isolator Kitchen switch Blue Green yellow Brown Black Supply cord from...

Страница 7: ...or is measuring humidity from all the wet rooms at the same time and should not be relied on to solely boost the unit Additional switch should be used local to the wet rooms see wiring diagrams Nuaire recommend that filters are inspected every 6 months and replaced every 12 months A flashing LED section 7 0 will indicate that a filter change is required This indication repeats every 12 months and ...

Страница 8: ...our for the first year and parts only for the remaining 4 years This warranty is void if the equipment is modified without authorisation is incorrectly applied misused disassembled or not installed commissioned and maintained in accordance with the details contained in this manual and general good practice The product warranty applies to the UK mainland and in accordance with Clause 14 of our Cond...

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