5
11/ The drain of the pressure relief device must be operated periodically to
remove scale deposits and verify that it isn't blocked.
12/ No hydraulic accessory shall be located between the safety device and
the cold water inlet. A pressure reducer (not included) is necessary on the
main supply when the pressure is greater than 5 bars (0.5 MPa).
13/ Connect the safety device to a drain pipe, in open air, in a frost-free
area and with a continuous slope down in order to drain the water in case
of drain of the water heater.
14/ For the connection use pipes with minimum characteristics pressure 10
bar (1 MPa) and the temperature should not exceed 100 °C.
15/ Draining: Disconnect the power supply and cold water inlet, open the
hot water taps and operate the drain valve of the safety device.
16/ The products described in this instruction book can change at any time
to be in accordance to the new technology and the standards.
These devices comply with the directive 2014/30/UE according to
electromagnetic compatibility, 2014/35/UE according to low voltage,
2011/65/UE according to ROHS directive and Commission Delegated
Regulation 2013/814/UE supplementing 2009/125/EC regulation for
ecodesign.
17/ Do not throw to the garbage your device but hand it in a
collection place where it can be recycled
18/This device is intended for use at a maximum altitude of 3000 m
1 - INSTALLATION (See General Warnings 1 to 6 p.4)
Installation of vertical wall mounted water-heater: to enable the heating element to be replaced, leave free space in
the front and the right side of the water heater.
Installation must be done by qualified / approved personal.
Installation of square product (p2): Above sink models: see fig. C
Installation of horizontal product (p.2): see fig. C1
2 - HYDRAULIC CONNECTION (See General Warnings 10 to 14 p.4 & 5)
All water supply pipes must be thoroughly cleaned before connection. The connection of the hot water outlet must be
made using a cast iron or steel sleeve of a dielectric union in order to avoid corrosion of the tubes (due to direct contact
between iron and copper). A brass union must not be used.
▪ Unvented installation (see p2 Fig. D for square product and fig. F for horizontal product): A new safety device
complied with the current standards (in Europe EN 1487) must be fitted with a rated pressure of 8 bar (0.8 Mpa), and
dimension 1/2‘’. The safety valve must be protected from frost. No water accessory must be installed between
the safety device and the cold water inlet to the appliance. Connect the safety device to an unpressurised outlet pipe
in a frost free environment, with a continuous slope for the evacuation of the water during heating up or draining the
water heater).
▪ Vented installation (see p.2 fig. E for square product and fig. G for horizontal product): (Supply for a single water
drawing point). The installation must be equipped with a special mixer tap (not supplied).
Attention: each time the unit heats up, water will flow from the tap. Do not block this flow.
3 - ELECTRICAL CONNECTION (See fig. A.1/A.2/B.1 p1, General Warnings 7/8/9 and 15 p.4 & 5)
The water heater can be connected and powered only by a single-phase 220 - 240V~ mains supply. Connect the water
heater via a fixed duct with a cross section of 2.5 mm2. For that, use standard channelling (fixed or fluted conduit) to the
