Overview; Displays; Start-Up Procedure; Indirect Water Heater Temperature Adjustment - Slant/Fin VSL II User Instructions

5 - USE

5.1 - Overview

The heater is pre-set with standard
parameters. It is possible to consult
the parameters by means of using the
"Users' Menu" (see Section 5.10).
During functioning display "N" of
Figure 5-1, displays the supply
temperature and display "M" (see
Figure 5-1) shows the pressure of the
heating system. The various operating
statuses are shown with other icons
as per Figure 5-1.

5.2 - Displays

During normal operations, the
display remain permanently off,
except appliance go in Lockout, or in
Blocking error.
In any case, pressing any key, display
will light on and will stay light on for 5
minutes from the last pressing key.
5.3 - Start-up
procedure
1. Open the manual gas shutoff valve;
2. switch on electric power to the
heater;
3. If the display shows code Err 65,
it means that the polarity has not
been observed (Call a qualified
technician to restore the situation,
do not attempt to repair it);
4. press key or
setup the supply temperature
desired, then press RESET key to
save the changement.
The flame control appliance will start-
up the burner.
If the burner fails to ignite within 60
seconds, the heater will automatically
attempt ignition another four times,
after which if it fails to start-up, it will
shut down and the display will show
Loc 1 together icon .
Press the RESET key in order to re-
set normal operating conditions.
The boiler will automatically attempt
another start-up.
CAUTION!!!
If the appliance
frequently shuts down, contact
a qualified technician to restore
normal running conditions. Do
not attempt to repair it.
14
5.4 - Indirect water
heater temperature
adjustment
If the boiler is installed to perform
double service (heating and domestic
hot water by an indirect water heater),
to control the indirect water heater
temperature you have to use keys
and
are pressed, the display, item "N" in
Figure 5-1, shows the indirect water
heater setpoint being selected. The
range within which the indirect water
heater can be set is 104°F (40°C) to
140°F (60°C).
WARNING!!!
WARNING!!!
temperature over 125°F can
cause severe burns instantly
or death from scalds. Children,
disabled and elderly are at
highest risk of being scalded.
Feel water before bathing or
showering.
5.5 - Heating
temperature
adjustment
The boiler supply hot water at the
temperature set by adjusting keys
to
or
5-1. The room thermostat turns the
circulator pumps on in order to satisfy
the heat demand of the rooms controlled
by the thermostat. To maximize the
heaters' performance, the heating
temperature, should be set at a value
that is just sufficient to maintain the
desired temperature of the rooms.
. When the keys
Water
as shown in Figure