Slant/Fin VSL-160C Part B - Manual (Page 34)

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13.4 - Start-up
procedure
1. Open the manual shutoff gas valve;
2. switch on electric power to the
boiler;
3. If the display shows code E21, it
means that the polarity has not
been observed between phase and
neutral (Call service department, do
not attempt to repair it);
4. on initial start-up, the appliance
carries out a light-on delay lasting
3 minutes. This is indicated by the
appearance of on the display;
5. wait 3 minutes until the end of the
;
6. turn knob “7” of Figure 13-1 until it
reaches the heating temperature
desired. Turn knob “11” of Figure
13-1 until it reaches the domestic
water temperature desired.
The fl ame control appliance will start-
up the burner.
If the burner fails to ignite within 15
seconds, the boiler will automatically
attempt ignition another two times,
after which if it fails to start-up, it will
shut down and the display will show
01.
Press the button 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 qualifi ed technician to restore
normal running conditions.
Now the boiler will continue to operate
in relation to the service requested
and will indicate the following on
display “1”:
- if a domestic water request is
active (Load of an indirect water
heater);
- if a heating request is active;
- if there is no domestic water or
heating request active.
13.5 - Summer
mode
To disable the heating functions for
a prolonged period, leaving only
the domestic hot water function,
switch OFF the heating temperature,
until the wording OFF appears, by
turning knob “7” of Figure 13-1 to the
minimum.
13.6 - Winter mode
In Winter mode, by means of the
pump, the boiler sends the water to
the system at the temperature set
using knob “7” of Figure 13-1.
When the temperature inside the
boiler reaches the temperature set,
the burner starts to modulate the
fl ame so as to reduce the output to
a minimum. If the temperature rises
further, the burner shuts down.
Simultaneously, the pump which
sends the water to the system is
switched on and off by the room
thermostat. This can be noted,
because indicator “6” of Figure 13-1
switches on and off in correspondence
with the on and off of the pump.
At fi rst the pump may make a noise.
This is due to the presence of residual
air in the hydraulic system which will
soon disappear on its own.
We recommend keeping the
temperature set using knob “7” at the
point shown by the symbols on the
panel for a rational use of the boiler.
If it is a particularly cold Winter and
it is diffi cult to maintain the desired
room temperature, turn knob “7” to
gradually higher values.
CAUTION!!!
do not demandate
the antifreeze protection
of your house to the boiler.
Because the boiler’s function
depends from the electrical
supply and from the gas
supply and because a trouble
can stops the boiler, if you live
your house, it is mandatory
install a safety device that
alarm the user in a case the
house will reach a temperature
near 50°F (10°C).
13 - USE