Adjusting Chw And Dhw Temperatures; Operating Modes - Baxi Nuvola 3+ BS40 Operating And Installation Instructions

3.1 MEANING OF THE SYMBOL
4 different boiler modulation levels are shown on during
boiler operation, as indicated in figure 2:
Figure 2

3.2 OPERATING MODES

There are 4 boiler operating modes:
OFF - SUMMER - WINTER - HEATING ONLY .
To set an operating mode, press for approximately 2 seconds.
In the OFF mode, the display shows neither of the above two symbols
. In this mode, only the ambient frost pro-
tection function is active while requests for DHW and central heating are not satisfied.
In the SUMMER mode, the display shows
. The boiler satisfies requests for DHW only while central heating is NOT
enabled (ambient frost protection function active).
In the WINTER mode, the display shows and . The boiler satisfies requests for both DHW and central heating
(ambient frost protection function active).
In the HEATING ONLY mode, the display shows . The boiler satisfies requests for central heating only (ambient frost
protection function active).

4. ADJUSTING CHW AND DHW TEMPERATURES

+/-
Adjust the heating delivery temperature and the DHW temperature , by pressing the respective buttons (figure 1).
When the burner is lit, the control panel display shows the symbol .
HEATING
The system must be fitted with an ambient thermostat for controlling indoor temperature.
While the boiler is operating in the heating mode, the display shows the flashing symbol and the heating delivery
temperature (°C).
DOMESTIC HOT WATER
While the boiler is operating in the DHW mode, the display shows the flashing symbol lampeggiante e la temperatura (C°).
Press P to set two different DHW temperature values, ECO e COMFORT.
To modify the temperatures, proceed as follows:
ECO
Press P, the display shows "eco", and then +/- to set the required temperature setpoint.
COMFORT
Press P, the display shows just the temperature setting, and then +/- to set the required temperature setpoint.
INSTRUCTIONS FOR USERS 7217402.01 - en
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