Domestic Hot Water Temperature; Star Preheating Function - Biasi RinNOVA 24S User Manual And Installation Instructions

Figure 2.8
Adjusting the heating temperature with an in-
stalled external probe
When the optional external probe is installed,
your boiler will automatically adjust the tempera-
ture of the heating system's delivery water tem-
perature in relation to the external temperature.
In this case, the boiler must be set by a qualified
installer (section "Setting the K coefficient of the
external probe" on page 45).
If the ambient temperature is not comfortable,
you can increase or decrease the heating system
delivery temperature by ± 15°C with the keys 13
(decrease) and 14 (increase) (Figure 2.5).

2.4 Domestic hot water temperature

The domestic hot water temperature can be ad-
justed using keys 10 (decrease) and 11 (increase)
(Figure 2.5) between a minimum of approx. 35°C
and a maximum of approx. 60°C. The first time
one of those keys is pressed, the "set" value is
displayed. The second time it is pressed makes it
possible to modify it.
Data shown on the LCD display:
• The "set" value of the domestic hot water the
symbol will flash. The background of the
display will be illuminated (Figure 2.7).
Figure 2.9
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USER INSTRUCTIONS
Regulation
Adjust the temperature of the domestic hot wa-
ter to a value that suits your needs.
Limit the need to mix hot water with cold water.
In this way you will appreciate the characteristics
of automatic regulation.
If the water is particularly hard, we recommend
regulating the boiler temperature to below 50°C.
In these cases, we recommend installing a water
softener in the d.h.w. system.
If the maximum flow rate of the domestic hot
water is too high so that a sufficient temperature
cannot be reached, request an Authorised Sup-
port Technician to install a flow rate limiter.
Domestic hot water demand
When the boiler has a domestic hot water de-
mand, the display will show the symbol
lowed by an increase in the temperature of the
domestic hot water. The symbol
(Figure 2.10).
Figure 2.10

2.5 3 star preheating function

This function reduces consumption of the do-
mestic water supply at the time of withdrawal,
preparing the boiler temperature at the request-
ed temperature.
To activate the 3 star preheating function press
keys 10 and 11 together (Figure 2.12) until the
symbol
2.11).
When the symbol
process.
appears on the LCD display (Figure
flashes, the function is in
fol-
will flash