Installation, use and maintenance manual
DOCUMENT 6328408
55
Pos. Description
Connector/hole
Cold water inlet
1”G
Hot water output
1”G
Condensate outlet
½”
Recirculation
¾”G
Coil for solar thermal
input
1”
1/4
G
Sensor socket (only for
relevant models)
½”G
Fig. 7 – Plumbing connections
The figure below(Fig. 8) shows an example
of a plumbing hook-up.
Fig. 8 – Example of a water system set-up
Fig. 8a – Example of heavy-series relief valve
NOTE: an impurities filter must be
installed on the cold water inlet.
The appliance must not operate
with water with a hardness below
12°F, or vice versa with extremely
hard water (above 25°F). A
suitably
calibrated
and
monitored softener should be
used in this case, but the residual
hardness should not fall below
15°F.
Water input;
Isolation valve
Automatic thermostatic mixing device
Heat pump
Recirculation pump
Spring-loaded check valve
Hot water output
Relief valve
Drain tube inspectable end
Drain valve
Expansion vessel
Val
ve
Cold water
input
Connection
to boiler
Connection to
outlet siphon