Hydraulic Installation - Bio Bronpi HYDROBOX Instrucciones De Instalación, Uso Y Mantenimiento

- In the upper part of the surround you should prevent an opening to load the combustible in the boiler. Previously the boiler top door
should be removed to allow the filling.
7.

HYDRAULIC INSTALLATION

Bronpi's Hydrobox, Hydrotex and Hydroconfort boilers have been designed for installation with a closed expansion vessel, where the water
contained does not communicate direct or indirectly with the atmosphere. In general, the installation of closed expansion vessel is provided
with a pre-charged closed vessel with a gas-tight membrane.
• SAFETY VALVES
The boiler is provided with a safety valve set at 3 bars pressure, in order to work during possible increases of pressure on the installation.
The discharge flow rate of the safety valve must allow to discharge an amount of vapour not lower than Q / 0.58 [kg. h], where Q is the useful
power transferred to the water of the generator expressed in kilowatts.
The fitter must control the maximum pressure in each point of the installation so that it does not pass the maximum working pressure of each
component.
The safety valve is placed on the top of the boiler, next to the exit tube. The discharge tube of the safety valve must be made so that it allows
the normal operation and does not cause damages to people; the discharge must end near to the safety valve and be visible and accessible.
• CLOSED EXPANSION VESSEL
The boiler is provided with a 6 l. closed expansion vessel, pre-charged at 1.5 bars.
The maximum working pressure of the vessel is lower than the calibrated pressure of the safety valve. The fitter must anticipate the capacity
of the expansion vessel by analysing the total capacity of the installation and placing another additional vessel if necessary.
The closed expansion vessels must conform to the provisions in terms of design, fabrication, conformity assessment and use for pressure
equipments.
In case of multiple heating generators (boilers that use other fuels or wood-burning thermo-fireplaces) that work in the same installation or the
same secondary circuit, it is compulsory to connect each generator with an expansion vessel, completely scaled for the total volume of water
contained in the same installation and in the same independent circuit.
• CONTROLS DURING THE FIRST START-UP
Before the connection of the boiler make:
a. A careful cleaning of all installation pipes to remove any residues that may damage the operation of some components of the
installation (pumps, valves, etc.)
b. A control to check the correct draught of the smoke exit, the absence of strangulations and make sure that there are not discharges
from other equipments in the smoke exit duct.
c. The correct purged of the installation.
• FEED WATER CHARACTERISTIQUES
The water physical-chemical characteristics are very important for the proper operation and the durability of the boiler .
Among the consequences caused by the low quality of the feed water, the most frequent consequence is the incrustation in the thermal
exchange surfaces.
It is also known that calcareous incrustations reduce the thermal exchange, even with a few millimetres, causing that some localised heat
spots are harmful. It is strongly recommended to do a water treatment in the following cases:
a. The maximum water hardness must not exceed 60 mg/l. In other case it is responsibility of the fitter the placement of osmosis
equipments.
b. Very large installations.
c. Consecutive fillings caused by maintenance works of the installation or produced by loss.
For the treatment of the feed water of the thermal installations it is recommended to ask for an authorised fitter.
• BOILER WATER CONNECTIONS
On the back of the boiler, you will find the hydraulic connections to facilitate connections. You will find a sticker on each of the connections;
flow, return, boiler drain and drain of the safety valve.
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS 45 HYDROBOX, HYDROTEX AND HYDROCONFORT