Opening The Instrument Panel - Slant/Fin VSL-160B Installation Instructions Manual

9 - INSTALLATION - Connecting to an indirect water heater
9.1.1 Indirect water
heater priority selection
The boiler is factory set for DHW
priority. This means that the boiler will
stay in DHW mode until the capacity
of the indirect water heater reaches
temperature. In some cases this will
result in the house cooling because
the central heating function was
stopped by the DHW priority mode.
Once the indirect water heater is
satisfi ed the boiler will automatically
return to central heating.
A = Front cover of the electrical box
B = Plastic spring to open the electrical box
C = Direction to open the electrical box
D = Switches for the functional setting of the boiler
Figure 9-2 Control board and unit electrical box details
Priority selection is a functionality
that toggles between CH and DHW
demand when they are both active at
the same time. The priority selection
is set with the (DHW Priority)
parameter in the "Installer menu" (see
Section 13.17).
Each value set into the
parameter will correspond to the
minutes delay boiler toggles between
Central Heating and DHW demand.
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9.2 - Opening the
instrument panel
To open the instrument panel and gain
access to the boiler control board,
follow this procedure:
1. disconnect the boiler from the
electrical supply;
2. remove the boiler casing according
to the instructions given in Section
14.2;
3. push the plastic spring tabs "B"
shown in Figure 9-2;
4. open the front half of the electrical
box in the "C" direction as shown in
Figure 9-2;