Airwell PAC BT Series, Installation And Operating Manual

Page: 18 / 112

16
3 - WATER CONNECTIONS
A
system safety valve drain:
discharge in pressure (3 bar)
B
DHW safety valve drain:
discharge in pressure (6 bar)
drain accumulation / drain pit
C
H
Boiler drain
A
system safety valve
B
domestic hot water safety valve
D
system draining tap
E
domestic hot water draining tap
F
system draining tap
G
solar panel drain tap (domestic hot water)
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.
An air bleed valve
Install the highest points of tubes in a way that the air can
escape form the circuit.
Inside the unit there are 2 water safety valves (the first one 6
bar on the Domestic Hot Water tank 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.
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
Water filter (provided by the client)
A
D
B
F
E
For drain (see page 69)
G
Secure the pipes with hose clamps