Cleaning The Brazier; Modifying The Water Temperature Setting; Dhw With Rapid Heat Exchanger; Dhw With Storage Tank - Ravelli HR EVO 290 Manuel D'installation

Modifying the water temperature setting

To modify the water temperature, press button P1 and then increase or
decrease the temperature parameter with buttons P1 and P2.
When the water temperature has reached the set value, the power is
automatically brought to the min. value, MODULATION status.

Cleaning the brazier

During normal operation in work mode, the 'BRAZIER CLEANING'
mode is activated at parameter-fixed intervals for a set duration.

DHW with rapid heat exchanger

When hot water is required, the display shows the message DHW EXCH and the LED indicated by the tap lights up. The function is
carried out only if the boiler is on, and the water inside the heating chamber has reached a sufficient temperature.
In the remaining cases the service is not provided.

DHW with storage tank

This type of installation requires the use of an external thermostat or a water probe, which measures the DHW storage tank (puffer)
temperature.
In the former case, temperature SETTING is obtained by adjusting the puffer thermostat controller.
In the latter case, to modify the temperature it is necessary to press button P2 on the control panel and then increase or decrease the
temperature value with buttons P1 and P2.
The DHW function is activated when the temperature falls below the SET temperature. During the STANDBY phase, the boiler
automatically lights and goes to WORK mode. Once the work temperature of the heating chamber water is reached, the supply of
water to the storage tank (puffer) is activated. The boiler display shows the message DHW and the respective LED lights up.
When the SET temperature of the storage tank is satisfied, the BOILER activates the heating system. If there is no further demand,
the boiler goes on STANDBY or to MODULATION, depending on the settings (see par. 4.6.2).
If the boiler is in OFF status, it does not light and does not provide the service.

System with puffer / heat accumulator

This type of installation requires the use of an external thermostat or a water probe, which measures the puffer water temperature.
In the former case, temperature SETTING is obtained by adjusting the puffer thermostat controller.
In the latter case, to modify the temperature it is necessary to press button P2 on the control panel and then increase or decrease the
temperature value with buttons P1 and P2.
When the temperature drops below the SET external thermostat temperature:
If the boiler is in the AWAITING REQUEST stage, it automatically turns on and goes to WORK status and the supply of water to the
puffer is activated when the work temperature of the heating chamber water is reached.When the puffer SET temperature is met, the
boiler goes to AWAITING REQUEST (make sure to set the STANDBY function to ON, see par. 4.6.2 ). If the boiler is in OFF status, it
does not turn on and does not provide the service.
It is possible to choose the temperature SETTING of the DHW storage tank and of heating from a min. of 54°C (STD pump start value)
to a max. of 80°C with minimum return temperature not lower than (50-55)°C in order to prevent condensation inside the chamber.
HR EVO 290 - 350 - 390
use and maintenance manual
Rev.1 16/03/2018
ENG
Pag.73
Heating chamber
water