29
MAINTENANCE
ENGLIS
H
3.3
Setting the low temperature system
Set the low temperature system delivery temperature by man-
ually adjusting the mixing valve and referring to the following
table.
Knob position
Temperature (°C)
MIN
20
1
25
2
30
3
35
4
40
5
45
6
50
7
55
MAX
60
3 4 5 6
3.4
Setting the high temperature system
Set the heating temperature selector of the boiler to the value
required for the high temperature system.
3.5
Checks after commissioning
Once commissioning has been completed, check:
− the plumbing circuit for leaks
− that the heating system is pressurised
− that the main switch for the system works
− that the electrical connections are correct.
− the mixing valve opens and closes correctly.
For heat requests from a mixed system, check that the mixing
valves open and close correctly.
9
If even one of these checks provides a negative result, the
system is to be switched off and must not be started up
again until the fault has been eliminated.
4
MAINTENANCE
4.1
Cleaning
Disconnect from the power supply before carrying out any clean-
ing operation by setting the main switch to "off".
The panelling is to be cleaned with a damp cloth using soap and
water.
If there are stubborn stains, use a cloth with a 50% water and
denatured alcohol mixture, or use specific products.
Dry carefully after cleaning.
0
Do not use abrasive products, benzene or trichloroethylene.
4.2
Draining the BAG
Before starting draining operations, set the main switch to "off".
To drain the
BAG
3
:
− Close the shut-off cocks on the side of the system (if pres-
ent)
− Connect a small pipe to the drain cock (1)
−
1
Using a CH11 wrench, open the cock (1) without unscrew-
ing it completely
− After having drained the
BAG
3
close the cock (1) again.
4.3
Checking the circulation units
When starting up for the first time and at least once a year, it is
advisable to check that the shaft of the circulation units rotate.
This is necessary because, especially after lengthy periods of in-
activity, deposits and/or residue may stop it rotating freely.
Releasing the circulation unit shaft if necessary
To release the shaft, proceed as follows:
− insert a screwdriver (Phillips no.2) into the hole (1) of the
circulation unit
− press (a) and turn (b) the screwdriver until the motor
shaft releases
1
a
b
Take great care when carrying out this operation so as not to
damage the components.
0
Do not run the circulation unit without water.
4.4
Checking the mixing valves
After a long period of inactivity, it is recommended that the cor-
rect function of the mixing valves is verified. Manually act on
them by using the control knob.
