Hydraulic Connection; System Water Filling - Ferroli EASYFIRE 29 Installation, Use And Maintenance Instructions

5.5.4. HYDRAULIC CONNECTION

The heating capacity of the unit must be previously established by calculating the building's heat
requirement according to current regulations, by contacting a specialised technician.
Before connecting the boiler to the water circuit, thoroughly clean all system pipes with
suitable products to remove any residuals or machining residuals that could compromise the
proper operation of the adjustment, control and safety components.
The chemical-physical characteristics of the system and replenishing water
are important for the proper operation and service life of the boiler.
It is advisable to check the water quality and, in the conditions listed below, provide for
treatment:
▪ very hard water ( > 20°f ),
▪ considerable amounts of replenishing water or subsequent fillings,
▪ systems of some complexity and size.
STANDARD HYDRAULIC COMPONENTS
Pos. Part
1 Pressure relief valve
2 Delivery pipe with connections 1"M
3 Return pipe with connection 1"M
4 Pressure transducer
System filling/discharge connection
5
1/2"F
Failure to wash the hydraulic system and introduce a suitable amount of
inhibitory liquid renders the unit's warranty null and void. Install shut-off valves
between the boiler and the heating system to isolate it from the system when
performing routine and/or extraordinary maintenance. Connect the boiler using
hoses to allow minor displacements and corrections during installation and
maintenance.

5.5.4.1. SYSTEM WATER FILLING

After carrying out the plumbing connections, it is possible to fill the unit and system:
Step Action
1 Open all the shut-off and air vent valves of the radiators - manifolds - boiler and
system.
2 Open the water filling cock gradually, making sure the vent valves work properly.
3 Fill the system slowly, to allow proper and complete evacuation of the air from
the vent, bringing the circuit under pressure (for a closed vessel system from 1.1
to 1.5 bar).
4 When finished, close the filling cock and make sure all vent valves have
discharged the air from the system.
62
cod. 48427B011_01/18_Hardware / M.Software 6.0
EASYFIRE 29 - 35 - 39
EN