Dantherm HCV 4 Manuel D'installation page 9

Assembly,
continued
Assembling the unit, Step
continued
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We recommend using a Dantherm water trap (optional extra). Alternatively,
you can produce a water trap with the dimensions shown. Fill the trap with
water during installation to prevent air entering through the pipe during ad-
justment and operation of the system.
Lead the pipe to the drain – the whole discharge pipe must be kept frost-free
to ensure that the water can run freely. The pipe must have a minimum gradi-
ent of 1% from unit to drain.
Nipple connections can be used on
this unit. Dantherm Air Handling rec-
ommends connections to the duct
system using sound absorbers with
nipples (T2/T3) where physically pos-
sible (rectangular, if required), and
remaining connections using NPU nip-
ple and insulated flexible ducts. Flexi-
ble ducts must be fully stretched and
Connection
Outside air T1
Supply air T2
Extract air T3
Exhaust air T4
without kinks to avoid unnecessary
loss of pressure.
The whole duct system should be insulated with a minimum of 100 mm insu-
lation. Place the ducts e.g. under a minimum of 100 mm ceiling insulation. If
insulation is used around the pipe, we recommend two layers of insulation
with foil on the outside. The insulation must sit tightly around the ducts.
The two layers should have staggered joints, which should be taped until air-
tight.
Insulate all flex ducts with 100 mm
The insulation of flex ducts in the heated part of the house may, however, be
reduced to 50 mm by the unit due to lack of space.
Choose the correct power supply cable to comply with in-country regulations
and connect the cable's IEC plug to the unit. Then connect the plug to 230 V
AC.
Action
T2
T3
T4
T1
Continued overleaf
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