Condensate drain
If the temperature falls below the
dew point, condensation will form
on the cooling fins during cooling
mode.
A collection tray together with
a condensation pump and float
switch are fitted as standard below
the cooling fins. Should the float
switch trip a protective shutdown
due to inadequate removal of
the condensation, the pump will
switch on immediately and run on
for approx. three minutes.
Tightness check
Once all the connections have
been established, the pressure
gauge station is attached as fol-
lows to the Schrader valve (if
fitted):
red = small valve
= injection pressure
blue = large valve
= suction pressure
Once connected, perform a tight-
ness test using dried nitrogen.
The tightness test involves spray-
ing a leak detection spray onto
the connections. If bubbles are
visible, the connections have not
been properly made. Re-tighten
the connection or prepare a new
flange.
If the tightness test is success-
fully completed, depressurise
the refrigerant pipes and start a
vacuum pump with an absolute
final partial pressure of min. 10
mbar to remove the air in the pipe.
Any humidity present in the pipes
is also removed.
A vacuum of min. 20 mbar
must be created!
!
CAUTION
The time required to generate the
vacuum is dependent on the pipe-
work volume of the indoor unit
and the length of the refrigerant
pipes. This always takes at least
60 minutes
.
Once any foreign gases and
humidity have been completely
extracted from the system, the
valves on the pressure gauge sta-
tion are closed and the valves on
the outdoor unit are opened as
described in the chapter on "Com-
missioning".
■
The condensation pipe should
have a fall of min. 2 %. This is
the responsibility of the cus-
tomer. If necessary, fit vapour
diffusion proof insulation.
■
If the level of the condensation
pipe on the unit is above that of
the outlet, route the pipe verti-
cally upwards and then with a
fall to the drain.
■
The delivery rate varies accord-
ing to device type (see right)
■
The condensation line from the
unit should run freely into the
drainage pipe. If the condensa-
tion runs directly into a sewer
pipe, fit a trap to prevent any
unpleasant odours.
■
When operating the unit at
outdoor temperatures below
4°C, ensure the condensation
pipe is laid to protect it against
frost. If necessary, fit supple-
mentary pipe heating.
■
Once the pipe has been laid,
check the condensation drains
off and permanently seal it.
■
Local regulations or laws of
environmental protection, eg
Water Resources Act (WHG)
are observed.
Riser pipe too far away
Condensation pipe too large/small
No fall
Cannot freely drain away
12-20 mm
min. 2% fall
Condensation connection - Correct!
500 mm
750 mm
max. 100 mm
Condensation connection - Wrong!
The maximum flow rate of the
condensate pump is 500/750
mm head. External influences,
such as for example can air-side
pressure, pollution, or wear it
come to power reduction. To
ensure a safe functional opera-
tion, we recommend a maxi-
mum lifting height of 500 mm,
not to exceed!
!
CAUTION
REMKO RVD...DC
20
