WHHRM300DC & WHHR400DC 8
Chapter 5
Installation
5.1 Installation general
The appliance installation procedure can be summarised as
follows:
1.
Siting the appliance (§5.2)
2. Connecting the ducts (§5.3)
3. Connecting the condensate discharge (§5.4)
4. Electric
connection:
Connecting the multiple switch and, if necessary, the mains
power and the OpenTherm connector (§5.5)
The WHHRDC must be installed in accordance with:
• Quality requirements ventilation systems dwellings,
• Quality requirements balanced ventilation in dwellings,
• The regulations for ventilation of dwellings and residential
buildings
• The relevant electrical safety regulations,,
• The regulations for connection to interior sewers in dwel
lings and residential buildings,
• Any additional regulations of the local authorities
• The installation instructions for the WHHRDCs.
5.2 Siting the appliance
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ging bracket is supplied.
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roof space above the normal level of insulation the insula
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appliance forming an insulated compartment.
•
It should be sited so that good condensate discharge with
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•
Ensure there is a free space of at least 700 mm at the front
of the appliance to provide room for opening the door and
a free headroom of 1.8m for maintenance purpose.
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wall with a mass of less than 200kg/m
2
additional measu
res such as double panelling, extra studs or an acoustic
mat will be required.
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ble (product code 217031).
5.3 Connecting ducts
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The appliance itself controls the air volume.
To prevent condensation on the ducts to and from the outside,
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an insulated duct with a vapour barrier.
To limit fan noise use acoustic duct for a length of 1
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tre immediatly after the appliance on the ducts to and
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dwelling. Where any duct runs outside the
insulated envelope they must be insulated.
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the duct runs so as to avoid noise transmission and
“crosstalk” particularly with separate branches to the dampers.
The duct spigots of the Vectaire
WHHRM300DC
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sealing loose rings ø160 mm.
The duct spigots of the Vectaire
WHHR400DC
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tric adapters of ø180 mm. The cen
tre of the connecting duct can be
shifted by rotating these eccentric
adapters if space is restricted.
The maximum permissible resistance in the system is 150 Pa
at the maximum ventilation capacity. If the resistance in the
duct system is higher, the performance of the appliance will be
adversely affected.
Always use Vectaire air supply and extract room valves to mi
nimise resistance. Air supply valves should be sited so as to
avoid direct draughts which cause discomfort to residents. To
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of 10 mm.
The exterior air supply should be on the sheltered or leeward
side of the building and can be sited on the roof or wall. The
exhaust air terminal should be sited on the roof well away from
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same side of roof.
