7
A
B
1
2
3
1
2
Installation with template
NOTE:
Before installation, it is recommended to carry out accurate flushing of all the pipes of the system in order to remove any residue or impurities that
could endanger correct operation of the HIU.
In order to facilitate these operations a manual bypass flushing valve is available (code 789110).
N.B.:
In the case of installation with connections
on the bottom fit the safety screw (figure
3).
Install SATK22 as per the above pictures
and close the 6 nuts using the fiber gaskets
supplied.
Connections on the bottom
Connections on the top
Heat meter installation
The HIU is fitted to house a compact heat meter
(with incorporated
return probe)
with 1” threaded connections and length of 130 mm.
Before carrying out any maintenance, repair or
part replacement work, proceed as follows:
- cut off the electric supply
- remove the cover
- close the shut-off valves on the primary flow and return
- empty the HIU using the drain cocks provided
- remove the template (A)
- remove the cap (B)
- install the flow meter on the return pipe. To tighten the nuts apply
maximum tightening torque of 25 Nm, taking account of the
indications of the heat meter manufacturer.
- install the flow probe in the M10 pocket (B).
Please refer to the heat meter technical data sheets for further
information.
