Baxi AS 300-2E BC, Инструкция по установке, эксплуатации и обслуживанию

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4.9.2 Connecting the tank to the domestic water circuit
(secondary circuit)
When making the connection, it is imperative that the standards and
corresponding local directives be respected. Insulate the pipes to keep
heat losses to a minimum.
Specific precautions
Before making the connection, flush the drinking water inlet pipes in order
not to allow metal or other particles into the appliance's tank.
Safety valve
Caution
In accordance with safety rules, a safety valve calibrated to 7 bar
(0.7 MPa) is mounted on the domestic hot water tank's domestic
cold water inlet.
Integrate the safety valve in the cold water circuit.
Install the safety valve close to the DHW tank in a place with easy
access.
9 Isolation valve
17 Drain valve
27 Non-return valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
54 End of the discharge pipe free and visible 2 to 4 cm above the flow
funnel
55 Safety valve 0.7 MPa (7 bar)
Sizing
The diameter of the safety unit and its connection to the tank must be at
least equal to the diameter of the domestic cold water inlet on the tank.
There must be no cut-off devices between the safety valve or unit and
the domestic hot water tank.
The discharge pipe in the safety unit valve must not be blocked.
To avoid obstructing the flow of water in the event of overpressure:
The safety unit discharge pipe must have a continuous, adequate
gradient.
The cross section of the discharge pipe from the safety unit must be at
least equal to the cross section of the opening on the safety unit outlet.
Isolation valves
Hydraulically isolate the primary and domestic circuits with isolation valves
to facilitate maintenance on the domestic hot water tank. The valves make
it possible to carry out maintenance on the domestic hot water tank and its
components without draining the entire installation.
These valves are also used to isolate the domestic hot water tank when
conducting a pressurised check on the tightness of the installation if the
test pressure is greater than the admissible operating pressure for the
domestic hot water tank.
Connecting the domestic cold water
Connect to the cold water supply according to the hydraulic installation
diagram.
The components used for the connection to the cold water supply must
comply with the prevailing standards and regulations in the country
concerned.
Fig.10
L000370-C
(54)
2 cm
9 9
55
29
17
27
30
28
4 Installation
7724479 - v03 - 07102019 AS 300–2E BC 17