18
Installation
2.4.4 Drainage pipe
The drainage pipe is used to drain the water from the
unit. Incorrect installation can cause damage to the unit
and other material damage.
a
CAUTION DANGER
– Insulate all of the pipes to prevent
condensate from forming, which could
cause water damage.
– If the drainage pipe is bent or not installed
properly, the water can escape and cause
the float switch to malfunction.
– In HEAT mode, the unit discharges water.
Make sure that the drainage pipe is in a
suitable area to avoid water damage and
slipping hazards caused by the discharge
water freezing.
– DO NOT pull the drainage pipe, as this could
detach it.
l
WARNING
This installation requires a polyethylene pipe
(outer diameter = 30-32mm, inner diameter =
25mm). Depending on actual installation
requirements, users can buy suitably sized pipes
from their local dealer, from an after-sales service
centre or directly off the market.
1 Insert the water drain pipe into the unit’s water intake
connection pipe and use a clamping ring to securely
close the insulated water drain pipes.
2 Use the water drain pipe insulation to tie the
indoor unit’s water intake and drain pipes together
(particularly for the indoor part) and use water drain
pipe cable ties to tie them securely and ensure that
the air does not enter and condense.
3 In order to prevent water from flowing back into the air
conditioner after the operation has been completed,
the water drain pipe should be inclined outwards with
a slope (drainage part) greater than 1/100. Ensure that
the water drain pipe does not bulge or retain water. If
it does, then it will be noisy. See “Fig. 19”.
4 When connecting the water drain pipe, do not pull the
intake pipes with force so that the connections do not
come loose. At the same time, fit a support bracket
every 0.8~1 metres to prevent the water drain pipes
from bending. See “Fig. 19”.
>1000mm
800 ～
1000mm
A
Fig. 19
A 1/100 slope or more
5 When connecting a long water drain pipe,
the connections must be covered with insulation to
prevent them from coming loose.
6 When the water drain pipe outlet is higher than the
water intake pipe connection, try to keep the drain pipe
as vertical as possible; the outlet pipe connections will
bend so that the height of the drain pipe is 1000 mm
from the base of the drain pan. Vice versa, there will
be an excessive flow of water at the end of operation.
See “Fig. 20”.
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