Delays, Alarms And Protective Actions; Circulator Pump Protection; Freeze Protection; Display In Energy Saver Mode - Slant/Fin VSL II User Instructions

5 - USE
5.6 - Delays, alarms
and protective
actions
To protect the life of the appliance,
improve comfort, and maximize energy
savings, the following timings have
been incorporated into the control
logic:
a - Pump delay: each time the room
thermostat is satisfied, the circulator
pump continues to run for 4 minutes;
b - DHW delay: each time the domestic
hot water demand is satisfied, a 4
minutes delay must pass before the
end of the service;
e - Time delay in restarting the burner:
in its normal functioning state, every
time the burner stops, there is a
delay time of 3 minutes before the
burner restarts again.
5.7 - Circulator
pump protection
During the summer months, the
circulators pumps are run once a day
for around 15 seconds to prevent it
from seizing.
5.8 - Freeze
protection
CAUTION!!!
For the freeze
protection function to work, the
boiler must remain connected
to the electrical and gas
supplies with DHW and central
heating service switched to OFF
CAUTION!!!
The freeze
protection program in the
boiler will only protect the
boiler and not the entire
heating system. If the system
is shut down on a regular basis
or has the potential to freeze
additional measures must be
taken to protect the system
from freezing.
15
CAUTION!!!
Do not deactivate
the boiler freeze protection
program. If the indoor air
temperature of the building
where the boiler is located
drops to 40F or below it is the
responsibility of the owner to
take preventative measures to
prevent the boiler and system
from freezing.
Once the heater has reached a
temperature of 50 °F (10 °C), the
heating pump will automatically turn
on. If the temperature falls below
41 °F (5 °C), the burner will light to
prevent the heater from freezing.
5.9 - Display in
energy saver mode
The display, in Figure 5-1, is switched
off each time no key is touched for at
least 5 minutes, with the exception of
when it displays errors or settings.