joule HHH-AEHP-00001, Installation & Maintenance Manual

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47
Modul-AIR Exhaust Air Heat Pump Installation Guide
Connecting to the ventilation ductwork
Ductwork – Supply Air
Ductwork – Intake Air
The Green Comfort is connected to the ventilation ductwork with the openings on the top and bottom of
the product. Please make sure to follow the guidelines below in order to lay the ventilation ductworks out
correctly. This procedure will ensure that there is as little resistance as possible in the duct work, so that the
Green Comfort consumes less power and makes the noise from the unit is reduced as much as possible:
• Avoid sharp bends or transitions.
• Swept 90° bends or 2x45° bends are preferred.
• Use two 45° bends instead of one 90° bend.
• Use round and smooth curves.
• Ensure all burrs are removed from duct ends.
• Do not use flexible connection hoses.
• Use exhaust valves with a pressure drop between 10 and 20 Pa.
• The use of a silencer is recommended on the supply to the Green Comfort unit and on the exhaust of
the Modul-AIR unit.
The Supply Air or ‘Fresh Air’ to the dwelling from the Green Comfort is the conditioned air that’s has passed
through the filters and heat exchanger within the Green Comfort unit. The Supply air is fed via the ductwork
to all the living spaces within the dwelling. If required, the Fresh Air will be heated by the Green Comfort
unit before entering the dwelling.
The Supply Air In or “Intake Air” from the Green
Comfort is the Intake of air from outside of the
dwelling. It is essential this duct is insulated
as the duct will intake untreated fresh air in all
atmospheric conditions. When the duct passes
through ceiling voids, condensation on the
outside of the duct will occur. To avoid this, the
entire Intake duct must be insulated with suitably
sized insulation, to local building regulations.
The Intake Air duct from the unit should be
connected to the roof/wall terminal using a
suitably insulated adapter and grill.
The Intake ducting should be no less than
Ø150mm or 220mm x 90mm flat pack. It is
necessary to adhere to this duct specification to
comply with noise specifications and to prevent
potential condensation. 220mm x 90mm flat
pack ducting must terminate with a double air
brick.