9
BIOCLASS iC 66
2.2
Hydraulic installation
The hydraulic installation must be made by qualified personnel. The applicable installation legislation is
to be complied with, and the following recommendations should also be taken into account:
•
It is essential
to install the external circulation kit (back in protection Kit) with the boiler,
to prevent any water condensation in the heat exchanger. If this requirement is not complied
with,
DOMUSA TEKNIK’s
guarantee of the appliance will automatically be null and void.
•
The inside of the installation piping should be thoroughly cleaned before switching on the
boiler.
•
We recommend inserting cut-off valves between the installation piping and the boiler to
simplify maintenance tasks.
•
Leave a free space around the boiler for carrying out any maintenance and repair operations.
•
Drain valves and suitable devices for correctly bleeding the air from the circuit during the
boiler filling stage should be fitted.
•
Install all the necessary safety elements (expansion vessel, safety valve, etc.) to comply with
the applicable regulations for the installation.
•
If the boiler is installed at a lower height than the heating installation, it is recommendable
to create a siphon at the boiler outlet, to prevent the installation from heating up due to
natural convection when heating is not required.
2.3
Installing a Sanit hot water tank (Optional)
For a correct electrical connection of a Sanit DHW hot water tank with
BioClass iC 66
boiler, these
steps should be followed:
•
Unplug the boiler from the mains power.
•
Connect a DHW temperature sensor (supplied optionally) to the sensor terminal strip
J7
(
Sa
;
terminals
16
and
17
)
(see "Connections Diagram")
.
•
Insert the temperature sensor bulb in the bulb-holder sheath provided on the hot water tank.
•
Connect the 3-way DHW diverter valve or the hot water tank booster pump (depending on
the installation, modify parameter
P.09
) to the supply terminal strip
J3
(
BA
; terminals
6
and
N
)
(see "Connections Diagram")
.
•
Connect the boiler pump to the supply terminal strip
J3
(
BC
; terminals
5
and
N
)
(see
"Connections Diagram")
.