24
EN
INSTALLATION: CONDENSATE DRAIN
▪ The water pipes should be suitably insulated to prevent
them from dripping in the cooling mode.
▪ The condensate drain network must be suitably sized and
the pipes positioned so as to assure a sufficient slope (min.
3%). To assure a regular flow, there must be no upward
sections or bottlenecks.
▪ The condensate drain should be fitted with a trap.
▪ Connect the condensate drain to a storm sewer.
▪ Do not use washing or sewage water drains as this may
cause unpleasant odours in the rooms if the water in the
trap evaporates.
After work check the condensate drains cor-
rectly by pouring some water into the drip tray
Pipes MIN
Φ
20mm
INSTALLATION: HyDRAULIC CONNECTIONS
OPERATING RANGE
Attention: Always use a wrench and counter-wrench to connect the
coil to the piping.
▪ Connect to the water supply.
▪ Install on-off valves
(MIN 1/2”)
to isolate the coil from the rest of the circuit in case
extraordinary maintenance is performed. Connect the inlet to a ball valve and the
outlet to a balancing or lockshield valve (or install 2 ball valves).
▪ Insert a vent valve at the top and a drain valve at the bottom.
▪ The heat exchange coils for water are tested to a pressure of 3 MPa (30 bar) and
can therefore operate up to a maximum pressure of 1,5 MPa (15 bar).
▪ Suitably bracket the pipes to the outside of the unit to prevent them from weighing
down on the coil.
Install anti-freeze devices. For installation in areas with particularly cold
climates, empty the water circuit if the system is not expected to be used for
a long time.
Maximum water inlet temperature:
80 °C
Minimum room temperature:
0 °C
Maximum operating pressure:
1,5 MPa (15 bar)
Maximum room temperature:
45 °C
Minimum operating pressure:
0,02 MPa (0,2 bar)
Minimum average water temperature
The above limits refer to operation with the fan running at minimum speed.
In case of a prolonged period with the fan switched off and cold water running in the coil, condensate may form outside the unit.
An accessory three-way valve should therefore be installed.
MINIMUM AVERAGE WATER TEMPERATURE
Dry bulb room temperature °C
21
23
25
27
29
31
Wet bulb room temperature °C
15
3
3
3
3
3
3
17
3
3
3
3
3
3
19
3
3
3
3
3
3
21
6
5
4
3
3
3
23
-
8
7
7
5
5
Hydraulic unions of the unit
Ø
1/2” Female gas
Pipes
MIN
Ø
3/4”
IN
OUT
MAX 1,5 MPa (15 bar)
OUT
IN
Содержание a-LIFE3
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