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27. 11. 17. Leaflet Number 671733

Installation and Maintenance

The WM2 Wall Mounted Range of Units

4.0 Ducting Arrangements - Standard Configuration 

Air supply 
to lounge 
via Air Valve 
in ceilings.

Extract air 
from 
kitchen/
bathroom 
via Air Valve 
in ceilings.

Minimum distance as specified 
in building regulations.

Exhaust air from 
kitchen/bathroom to 
outside via louvre grille.

Intake air 
from outside
via louvre grille.

All duct between MVHR 
unit and atmosphere to 
be insulated*.

Exhaust air from 
kitchen/bathroom to 
outside via air brick.

Intake air 
from outside
via air brick.

All duct between MVHR 
unit and atmosphere to 
be insulated*.

*Insulated 
supply duct.

*Insulated 
supply duct.

Air supply  
to lounge 
via Air Valve 
in ceilings.

Extract 
air from 
kitchen/
bathroom 
via Air Valve 
in ceilings.

Air supply 
to bedrooms 
via Air Valve
in ceilings.

Top of ceiling void.

Top of ceiling void.

Nuaire wall 
mounted unit.

Air supply to 
bedrooms 
via Air Valve 
in ceilings.

Nuaire wall 
mounted unit.

MVHR-DRAIN
Condensate drain, uninsulated 
drain pipe with min 5

o

 fall running to SVP.

MVHR-DRAIN
Condensate drain, uninsulated 
drain pipe with min 5

o

 fall running to SVP.

*Insulated 
extract duct.

*Insulated 
extract duct.

Minimum distance as specified 
in building regulations.

Figure 10a. Typical ducted arrangement for a wall mounted unit using circular ducting.

Figure 10b. Typical ducted arrangement for a wall mounted unit using rectangular ducting.

ALSO FROM NUAIRE - 

New

range of thermal ducting,

an all-in-one insulated ducting system. 

(see installation document 671620).

Summary of Contents for ecosmart MRXBOX95-WM2-AE

Page 1: ...tatutory governing regulations All mains wiring must be in accordance with the current I E E Regulations or the appropriate standards Ensure that the mains supply Voltage Frequency and Phase complies with the rating label Please allow a minimum of 350mm in front of the unit The fan must be installed indoors on a suitable wall away from direct sources of frost heat water spray or moisture generatio...

Page 2: ...nd the cover plate slid along the length to bond against the base panel of the enclosure preventing noise breakout fig 7 Figure 7 1 The condensate must be discharged under a water level in a U trap drainpipe or an alternative drain method which acts as an airlock 2 If using a U trap please ensure the U trap has been filled to a suitable level of water to avoid any air locks 3 If the condensation p...

Page 3: ... 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 150mm diameter or 220 x 90mm rectangular ducting should be used Refer to dwelling design drawing figure 10a and 10b on page 5 for further informa...

Page 4: ...case minimum high extract rate for the sanitary accommodation should be omitted from the step 2 calculation Step 3 The required airflow rates are as follows n the maximum whole dwelling extract ventilation rate e g boost should be at least the greater of step 1 and step 2 Note that the maximum individual room extract rate should be at least those given in table 1 for minimum high rate n the minimu...

Page 5: ...pply duct Air supply to lounge via Air Valve in ceilings Extract air from kitchen bathroom via Air Valve in ceilings Air supply to bedrooms via Air Valve in ceilings Top of ceiling void Top of ceiling void Nuaire wall mounted unit Air supply to bedrooms via Air Valve in ceilings Nuaire wall mounted unit MVHR DRAIN Condensate drain uninsulated drain pipe with min 5o fall running to SVP MVHR DRAIN C...

Page 6: ...ion to Remote Fail Indicator Ref MRXBOX95 RFI Optional 3 2 Figure 11a Note Wiring is for reference purposes only as the connections in fig 11a are factory fitted The unit is pre wired with a 2 metre fly lead 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...

Page 7: ...overing the control has an adhesive panel which should be removed post commissioning to prevent tampering 8 Speed 1 is limited to never exceed speed 2 when commissioning speed 2 should always be set first 6 1 Speed 3 The unit has to ability to override both speed 1 and speed 2 to operate the fan to maximum airflow See wiring diagram for details of operating this facility 6 2 Humidity adjustment AB...

Page 8: ...n label 11 0Warranty The 5 year warranty starts from the day of delivery and includes parts and labour for the first year and parts only for the remaining 4 years Thiswarrantyisvoidiftheequipmentismodifiedwithoutauthorisation isincorrectlyapplied misused disassembled ornotinstalled commissionedandmaintainedinaccordancewiththedetailscontained inthismanualandgeneralgoodpractice The product warranty ...

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