cod. 3541T620 - Rev. 05 - 04/2022
136
EN
DORA
90 LT - 120 LT
fig. 34 - Safety valve 0.7 MPa (7 bar)
The figure below shows an example of a hydraulic connection.
fig. 35 - Example of water system
REF.
DESCRIPTION (fig. 35)
1
Shut-off valve
2
Unidirectional valve
3
Safety valve (supplied)
4
Condensate drain
5
Thermostatic device for automatic mixing
6
Drain valve
ATTENTION
• Water can drip from the dis-
charge pipe of the overpres-
sure device; leave this pipe
open to the atmosphere.
• The decompression device
must be operated regularly
to remove limescale depos-
its and to check that it is not
blocked.
• Connect a rubber hose to the
condensate drain, taking care
not to force too much so as
not to break the drain hose
itself.
6.7.1 Condensate drain connection
The condensate forming during heat pump operation flows
through a special drain pipe (½”) that runs inside the insulation
casing and comes out the bottom of the equipment (fig. 36).
It must be connected to a duct so that the condensate can flow
regularly (example of installation fig. 37).
fig. 36- Example of condensate drain connection without a trap
