Feed Water Characteristiques; Filling The System - BOREAL HYDROBOREAL Série Instructions D'installation, D'utilisation Et D'entretien

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.

FILLING THE SYSTEM

•
When the hydraulic connections are finished you can connect the system.
Open all the air vent valves of radiators, boiler and installation.
WARNING!! The boiler is provided of an automatic water trap. Make sure that all the air vent devices are placed in the highest position of
the installation because it might not be enough.
Do not forget to open the covers of the purgers in order to allow the air outlet.
Open the fill tap gradually making sure that all the air vent valves work normally. Control the installation is under pressure by using a gauge. Pressure
must be between 1.1 and 1.2 bars with an installation provided with a closed vessel. Close the fill tap and purge again the air on the boiler through the
air vent valve.
• HYDRAULIC SCHEMES
Now we show you a series of representative schemes with different hydraulic connections. These schemas do not preclude the obligation and / or
necessity by the fitter to install different components not showed (anti-electrolytic cuffs, expansion vessels, circulation pumps, back end protection valves
(thermal shock valves), water treatment systems, air vent valves, mixing valves, stopcocks ...) that makes more reliable, durable and comfortable the
installation or the boiler. Boreal only guarantee an optimal work of the boiler when the installation is made with an accumulation tank (buffer tank), and
only the fitter is responsible for the use or non-use of this.
• Boiler + Radiators Circuit / Floor heating circuit
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thermostat
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
Radiators
Underfloor heating
Radiators
Underfloor heating
Anti-condensation
Valve
45
Mod. Hydroboreal
Flow
Drain of the
safety valve
Return
Boiler
drain
Circulating pump
and expansion
vessel included
General
plumbing
connection
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