Hydraulic Connection - Atlantic ODEO User Manual

HYDRAULIC CONNECTION

Before realising the hydraulic connection, the supply lines have to be cleaned thoroughly to prevent
the risk of metal or other particles entering into the water heater.
Do not connect the hot water pipes (red marker, 6 - figures 4 and 5)) and cold water pipes (blue
marker, 1 - figures 4 and 5) of the water heater directly to the copper pipes in order to avoid
iron/copper galvanic pairs. The hot water pipe must be equipped with a dielectric joint (supplied with
the appliance) and the cold water pipe must be fitted with a safety unit (except if free flowing with
specific plumbing). If PER pipes are used, you are strongly advised to fit a thermostatic control on
the water heater outlet. It will be adjusted according to the performances of the material used.
In the event of corrosion to the threads of pipes not equipped with these protective devices,
our warranty is invalid.
Irrespective of the installation type, it must include a shut-off valve on the cold water supply,
upstream of the safety unit.
The installation must include a pressure reducer if the supply pressure is greater than 0.5 MPa (5
bar). The pressure reducer should be fitted on the general distribution flow. A pressure of 0.3
to 0.4 MPa (3 to 4 bar) is recommended.
A storage water heater can be used in one of two ways:
1 - pressurised if it needs to supply several water points.
The installation should include a new safety unit calibrated to 0.7 MPa (7 bar – not supplied) with
the appropriate dimensions for the capacity (small capacities: 1/2"), and carrying the NF mark
(standard NF EN 1487).
It must be installed in strict compliance with the following diagrams (FIG. 4 and 5).
The safety unit must be positioned directly on the cold water inlet, or as close to it as
possible, and protected from frost.
Connect the safety unit to a discharge pipe, kept in the open air, in a frost-free environment,
continuously sloping downwards to drain off the heat-expanded water or to allow for drainage of the
water heater. This requires the drain pipe diameter to be suitable for the flow rate. Activate the
safety unit's drainage valve as soon as it is implemented to ensure that the valve is not stuck.
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