Biasi Riva ADVANCE SV Owner's Manual page 16

5. Instructions For Use Cont.
When you expect not to use the boiler for a long period:
• Switch off the electricity supply to the boiler, by means of the circuit breaker;
• Shut off the gas supply cock connected to the gas inlet pipe and the cock connected to the
supply cold water inlet pipe (see section 3.3 for pipes);
• Empty the water circuit, if necessary, as shown in the installation, operation and service
instructions manual in the maintenance section.
With the tank connected and NTC tank
probe:
The temperature of the hot water contained
in the tank can only be adjusted if the tank
has a specific NTC probe that detects the
temperature.
The temperature of the domestic hot water
contained in the tank can be adjusted to a
maximum of approx. 140 °F, turning the boil-
er setting knob indicated in Figure 5.11.
If there is a large amount of limestone in the
water, a small water softener should be in-
stalled.
To avoid any risks related to the formation of
microorganisms (legionella) in the domestic
hot water, activate the antilegionella function
(see "Antilegionella function" on page 26 to
Installer manual).
This function raises the temperature of the
water in the tank to above 149 °F for a cer-
tain period of time, thereby eliminating any
microorganisms in the water.
With the tank connected and tank ther-
mostat:
The temperature of the tank serpentine de-
livery water can be changed by turning the
boiler setting knob in Figure 5.11. For opti-
mal tank efficiency, the knob shown in Figure
5.11 should be set to the maximum.
16 RIVA ADVANCE USER MANUAL
5.7 Domestic hot water temperature:
Minimum
Maximum
Figure 5.11