Condensate Drain Pipe; Commissioning - Ariston Wi-Fi Manual

Hybrid electric water heater (WiFi model) – TECHNICAL INFORMATION FOR INSTALLERS
manufacturer shall not be held liable. Use a flexible pipe (A fig.8) to connect the pressure safety device inlet to the mains
cold water pipe (C fig.8), using a cut-off valve if necessary. A water discharge pipe must be provided and fitted to the
outlet in case the emptying tap is opened (B fig.8).
When screwing in the pressure safety device, do not over tighten and do not tamper with it.
It is normal for water to drip from the pressure safety device during the heating phase; for this reason, it is necessary to
connect the outlet, which must always be left exposed to the atmosphere, to a drainage pipe that slopes downwards
and towards an area not subject to frost or to the siphon (D fig.8). It is also recommended to connect the condensate
drainage pipe to the same outlet, using the pipe supplied (F fig.8), at the special attachment point (G fig.8) located on
the back of the water heater via the fitting (H fig.8).
If the mains pressure is close to the calibrated valve values, a pressure reducer must be installed as far from the
appliance as possible.
The appliance must not operate with water hardness levels below 12 °F; on the other hand, it is advisable to use a
suitably calibrated and monitored water softener in the event of particularly hard water (greater than 25 °F);in this case,
the residual hardness must not fall below 15 °F.
If the mains pressure is close to the calibrated valve values, a pressure reducer must be installed as far from the
appliance as possible.
FIGURE 8. Key: A: cold water inlet pipe / B: hot water outlet pipe / C: safety unit / D: siphon / E: dielectric unions / F:
condensate outlet pipe / G: condensate outlet attachment / H: condensate outlet connection.
WARNING! It is recommended to carefully flush the system pipes in order to remove any residues from threads,
welding or dirt which may compromise the correct operation of the appliance.
4.4

Condensate drain pipe

Condensate, or water, which forms in the heat pump during heating must be eliminated. Connect the plastic pipe
provided to the drain pipe fitting. Ensure that the water flows to a suitable drain, preferably through the safety unit siphon,
if applicable.
Ensure the drain is unobstructed.
An incorrect installation may result in water leaking from the rear of the product.
If a conduit for the condensate is not possible, a tank suitable for receiving the produced condensate is available (as an
accessory). The tank has about one week capacity, at average conditions of operation. For assembly of the tank and
the condensate drain, see section 7.7.
5

COMMISSIONING

Once the hydraulic and electric connections have been completed, fill the water heater with water from the mains water
supply. To fill the water heater, it is necessary to open the central tap of the domestic water system or the nearest hot
water tap, ensuring that all of the air in the tank is gradually expelled.
Ensure no water is leaking from the flange and pipe fittings and, if necessary, tighten them gently.
After having verified there is no water on the electrical parts, connect the product to the mains power supply.
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