Hitecsa ADISA ADI CD 105, Техническое руководство по установке, использованию и обслуживанию

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ADI CD Boiler – Technical Manual
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17.7 Hydraulic installation
17.7.1 Data to be considered
Concept Value
Minimum water working pressure 1 bar
Maximum water working pressure 5 bar
Maximum flow temperature 87ºC
(up to 90ºC in some moments due to PID control)
Minimum water pressure safety device
The boiler includes a water pressure switch, that stops the boiler when the water pressure achieves a minimum
value. It stops at 0.8 + 0,1 bar, and reactivates at 1 + 0.2 bar.
It is important to consider the following instructions (see hydraulic diagrams):
-
Cut-off/closing valves in the flow and return pipes of each boiler.
-
Do not weld the boiler to the installation piping.
- Models ADI CD 105 to ADI CD 200: male threaded flow-return connections of 2”.
- Higher models:
ADI CD 250 to ADI CD 475: 2 ½ “, flanged connections, PN 6.
ADI CD 550 to ADI CD 950: 4”, flanged connections, PN 10.
-
Closed expansion vessel, calculated and installed according to the regulations.
-
Overpressure safety valves and boiler draining in accordance with the current regulations.
-
A pressure switch whose function is to stop the boiler if the hydraulic pressure is lower than the minimum
value.
-
An automatic air vent of big capacity, installed in the flow pipe or in the higher part of the flow circuit of the
installation.
-
A filter with a stainless-steel mesh of 0.3 mm in the heating return of every boiler.
-
A water meter in the refilling of the primary circuit.
-
A drain pipe for the evacuation of condensate: it must be connected to the drainage of the boilers room and
it is important that the outlet is visible to verify if it condenses.
17.7.2 Overpressure safety valve
The boilers maximum operating pressure is 5 bar. This value must never be exceeded and precautions must be
taken to avoid this could happen, even accidentally.
It is important to install overpressure safety valves in each boiler, according to the current regulations and to the
equipments installed. Minimum dimensions of the safety valve:
ADI CD
105 – 150 200 250 275 325 400 475 - 950
INCHES 1" 1"1/4 1"1/4 1"1/4 1"1/2 1"1/2 2"