85
16.8 - Heater’s
Freeze protection
CAUTION!!!
For the freeze
protection function to work, the
heater must remain connected
to the electrical and gas
supplies with DHW service
switched to OFF
CAUTION!!!
This freeze
protection function is
conceived to protect the heater
only, not the system.
Once the heater has reached a
temperature of 50 °F
(10 °C)
, the local
pump will automatically comes on. If
the temperature falls below 41 °F
(5
°C)
, the burner will light to prevent the
heater from freezing.
If the heater will not be used for long
time it should be drained per Section
17.9.
16.9 - Display in
energy saver mode
The display, in Figure 16-1, is
switched off each time no key is
touched for at least 5 minutes, with
the exception of when it displays
errors or settings. If you want to leave
the display continuously ON, set
parameter
2100
to 0 (zero) (see
Section 16.11.
16 - USE
16.6 - 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 - DHW delay: each time the domestic
hot water demand is satisfied, a 4
minute delay pass before the end of
the service;
c - 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 starts again.
16.7 - Circulator
pump protection
During stand by state, circulator pumps
run once a day for around 15 seconds
to prevent them from seizing.
Summary of Contents for Esteem 399
Page 3: ...3 SAFETY INSTRUCTIONS ...
Page 5: ...5 SAFETY INSTRUCTIONS ...
Page 112: ...112 17 MAINTENANCE ...
Page 116: ...116 19 SPARE PARTS Spare parts ...
Page 135: ......
