Solar Function; Solar Panels Coupling Function; Yearly Appliance Check And Maintenance - Immergas CAESAR 14 3 E Instruction Booklet And Warning

3.9 SOLAR FUNCTION.

The solar function is always active.
During a request for DHW, if the inlet
temperature is the same as or higher than -3°C
with respect to the value set, the water heater
does not switch-on.
Functioning is however shown on the display by
the flashing of the relevant signal (4).
3.10 SOLAR PANELS COUPLING
FUNCTION.
The water heater is set-up to receive pre-heated
water from a system of solar panels up to a
maximum temperature of 65°C. In all cases, it is
always necessary to install a mixing vale on the
hydraulic circuit upstream from the water heater
on the cold water inlet.
Note: for good functioning of the water heater;
the temperature selected on the mixing valve
must be 5 °C greater with respect to the
temperature selected on the water heater control
panel.
In this condition, parameter P1 (solar delay
timing) must be set at a temperature sufficient
to receive water from a storage tank situated
upstream from the water heater. The greater the
distance from the storage tank, the longer the
stand-by time to be set. When these regulations
have been performed, when the water heater inlet
water is at the same or greater temperature with
respect to that set by the DHW selector switch,
the water heater does not switch on.
3.11 YEARLY APPLIANCE CHECK AND
MAINTENANCE.
The following checks and maintenance should
be performed at least once a year.
- Clean the flue side of the heat exchanger.
- Clean the main burner.
- Visually check the flue hood for deterioration
or corrosion.
- Check correct lighting and operation.
- Check correct burner calibration.
- Check correct operation of control and
adjustment devices and in particular:
- the intervention of the functioning selector
positioned on the water heater control panel;
- domestic hot water control thermostat
intervention.
- Check that the internal system is properly
sealed according to specifications.
- Check the intervention of the device against no
gas ionisation flame control. Intervention time
must be less than 10 seconds.
- Visually check for water leaks or oxidation
from/on connections.
- Check visually that the safety and control
devices have not been tampered with and/or
shorted, in particular:
- temperature safety thermostat;
- air pressure switch
- Check the condition and integrity of the
electrical system and in particular:
- electrical power cables must be inside the
whipping;
- there must be no traces of blackening or
burning.
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