Hydraulic Connection; Cold Water Connection - Atlantic Explorer Installations- Und Bedienungsanleitung

Presentation

7. Hydraulic connection

The use of a recirculation system on the cold water inlet is prohibited: such an installation causes
water destratification in the tank and leads to the heat pump and electric heater having to work
harder.
The cold water inlet has been marked with a blue flange, the hot water outlet with a red one. They have a gas
thread with a diam. 20/27 (3/4").
For regions with water having a high mineral content (Water hardness - Th > 20 °f), water treatment
is recommended. With a water softener, the hardness of the water must remain above 8 °f. The water
softener does not give rise to a waiver of our warranty, provided that it is authorised in the relevant country
and set up in accordance with good engineering practices, and regularly checked and serviced.
The hardness criteria must respect that defined by DTU 60.1.

7.1. Cold water connection

Before creating the hydraulic connection, check that the network pipes are clean.
The valve (supplied) must be installed with an opening pressure of 8 bar (0.8 MPa).
No components (stop valve, pressure reducer, hose etc.) must be positioned between the safety unit
and the water heater cold water branch connection.
Water may flow from the discharge pipe of the
pressure relief valve device; the discharge pipe must
be kept vented. Irrespective of the installation type,
it must include a shut-off valve on the cold water
supply, upstream of the safety unit.
The drain of the safety unit must be connected to the
wastewater to allow free flow, via a siphon. It must be
installed in a frost-free environment. The safety unit
must be activated regularly (1 to 2 times per month).
The installation must include a pressure reducer if the
supply pressure is greater than 0.5 MPa (5 bar).
The pressure reducer should be installed on
the general distribution flow (upstream of the
safety unit). A pressure of 0.3 to 0.4 MPa (3 to 4 bar)
is recommended.
Safety unit
Cold water
inlet
Siphon
☺ YES
Installation Use Maintenance
Pressure reducer
Warranty
 NO
Water supply from
the network
☺
YES