2
AFTER INSTALLING THIS UNIT,
PLEASE PASS ONTO END USER
DO NOT THROW AWAY
Appliance Symbols
Recommendation
Read
instruction
manual.
Risk of
electric
shock.
General
hazard
safety alert.
Disconnect the
mains supply
before removing
this cover.
Wait until all machine
components have
completely stopped
before touching them.
1. A short piece of flexible ducting, approx
300mm long is used to connect the unit to
the ducting system.
2. Any flexible ducting used must be pulled
taut.
3. A minimum distance of 300mm between
the unit and any sharp bends in duct work.
4. Ducting should be insulated where it
passes through unheated areas and voids
with the equivalent of at least 25 mm of
a material having a thermal conductivity
of ≤0.04 W/(m.K) to reduce the possibility
of condensation forming. Where a duct
extends externally above roof level the
section above the roof should be insulated
or a condensate trap should be fitted just
below roof level.
5. Ducts within the building heated envelope
between the external terminals and
the unit’s From Atmosphere and To
Atmosphere ports should be insulated and
wrapped additionally with a vapour barrier
outside the insulation.
6. Where ducts pass through fire barriers,
they must be appropriately fire stopped
in accordance with the requirements of
Building Regulations.
7. A ducting condensate drain to be fitted on
vertical To Atmosphere duct work.
8. Ducting must be installed in such a way
that resistance to airflow is minimised.
9. Ducting connected to the From Atmosphere
and To Atmosphere ports, must be to/
from the external air outside the building
envelope.
10. Duct joints to the unit’s duct ports must
be fixed using a method that ensures a
long term seal is achieved. If using a short
piece of flexible ducting secure using a
hose clamp, do not over tighten.
11. A minimum distance of 2m exists between
the external supply and exhaust terminals.
Disconnect the
mains supply before
removing this cover.
Before obtaining access to terminals
or removing this cover, all supply
circuits must be disconnected.
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