Airwell PAC BTE UI 4 Manuel D'utilisation page 16

3 - WATER CONNECTIONS
An air bleed valve
Install the highest points of tubes in a way that the air can
escape form the circuit.
Water filter (provided by the client)
The filter is extremely important: it helps to lockout any impuri-
ties in the water and avoid clogging the system and heat ex-
changer.
It must be installed immediately at the entrance to the water
mains, in a position that is easily accessible for cleaning.
The filter should never be re-moved.
Check for clogging from time to time
Installation
OK
System filter
Must be installed on the system return
The filter must never be removed.
Check for clogging from time to time.
Connecting the indoor unit drains
Any anti-freeze liquid contained in the system should not be
discharged freely as it is a pollutant.
It must be collected and reused.
Secure the pipes with hose clamps
DHW safety valve drain:
A
discharge in pressure (6 bar)
system safety valve drain:
B
discharge in pressure (3 bar)
C drain accumulation / drain pit
Inside the unit there are 2 water safety valves (the first one 6
bar on the DHW circuit, the second one 3 bar on the
installation circuit) that must be connected to a suitable drain,
otherwise if valves intervened and flood the rooms, the heat
pump manufacturer will not be responsible.
For drain (see page 82)
B
D
A
E
A
domestic hot water safety valve (6 bar)
B system safety valve (3 bar)
D system draining tap
E storage discharge stop valve (domestic hot water)
F domestic hot water draining tap
G solar panel drain tap (domestic hot water)
I storage charge valve
G
F
I
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