Ariston Nuos EVO SPLIT 300, Manual

Page: 41 / 104

Heat pump water heater – INSTALLATION
39
PERMANENT ELECTRICAL CONNECTION (24h/24h)
Fig. 13
Use this configuration whenever users do not have a two-tier electricity rate.
The water heater will always be connected to the power supply network to ensure 24h operation.
ELECTRICAL CONNECTION WITH TWO-TIER ELECTRICITY RATE (8h/24h)
Fig. 14
If users have a two-tier electricity rate and a suitable meter, the product may be powered only while the
lowest rate applies.
During the period in which the appliance is not powered, protection against corrosion through the
impressed current anode is ensured by the rechargeable batteries.
ELECTRIC CONNECTION WITH TWO-TIER RATE AND HC-HP SIGNAL (24h/24h)
Fig. 15
Offers the same cost advantages compared to the two-tier rate configuration but, additionally, it allows for
obtaining rapid heating thanks to the BOOST mode that
activates heating even with the HP rate.
1) Connect a bipolar cable to the appropriate signal contacts on the meter.
2) Connect the signal bipolar cable to the indicated terminal which is located inside the product, close to
the supply terminal.
WARNING: the signal cable must be inserted in the hole beneath the power supply cable then anchored
with suitable cable clips located inside the product, along the same route of the power supply cable, and
tightened in the cable glands near the appropriate terminal; make a suitably-sized hole in the rubber rings
for the passage of the cable.
3) Activate the HC-HP function through the installer menu (see Paragraph 7.6).
5. INITIAL START-UP
Once the appliance is connected to the hydraulic and electric systems, the water heater must be filled with water from
the domestic water supply network. In order to fill the water heater, it is necessary to open the central tap of the
domestic network supply and the nearest hot water tap, while making sure that all the air in the tank is gradually
expelled.
Visually inspect for possible water leaks from the flange and pipe fittings and gently tighten them, if necessary.
Remove the tab from the batteries, the battery housing is located beneath the frames indicated in pictures nr.
1 and 2.