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PRACTIKA 28-33
USE AND INSTALLATION MANUAL
Chapter 5
page 28
System installation procedure
Technical dept. - All rights reserved - Reproduction prohibited
1
PRACTIKA BOILER
6
THERMOSTATIC MIXER
2
COLD WATER INLET
7
SOLAR CONTROL UNIT
3
SAFETY VALVE
8
SOLAR PANEL
4
SOLAR PUMP STATION
9
CYLINDER
5
DOMESTIC HOT WATER
CAUTION:
the system installation and the running of the tests must be specified in the relevant
pellet boiler and pellet burner documents, filling in the boxes with the related data
(compulsory).
5.5.
Washing the system
Connections MUST be easy to disconnect by means of swivel pipe unions. It is always advisable to fit
suitable cut-off gate valves on the heating system piping.
Caution: A safety valve must under all circumstances be fitted on the system.
To prevent hazardous corrosion of the heating system and the formation of scaling and deposits, it is of the
utmost importance to wash the system before installing the appliance, in accordance with standard UNI-CTI
8065, using appropriate products such as Sentinel X300 (new systems), X400 and X800 (old systems) or
Fernox Cleaner F3.
Full instructions are provided with the product. However, for further details contact the manufacturer
directly: SENTINEL PERFORMANCE SOLUTIONS LTD or FERNOX COOKSON ELECTRONICS.
After washing the system, you are advised to use inhibitors such as Sentinel X100 or Fernox Protector F1 to
protect the system from corrosion and deposits.
It is important to check the concentration of the inhibitor after each modification to the system and each
maintenance check, according to the specifications provided by the manufacturers (relevant tests are
available from retailers).
The outlet from the safety valve must be connected to a collection funnel to channel any discharge if
servicing is carried out. If the heating system is at a higher level than the boiler, you must install cut-off
cocks on the system flow/return pipes. These cocks are provided in the optional kits.
Caution: Failure to wash the heating system and add a suitable inhibitor shall invalidate the
appliance guarantee as well as the guarantee for accessories such as the pump and valve.
5.5.1.
Filling the system
Before making the boiler connections, it is good practice to allow water to flow through the piping to
eliminate any foreign bodies that could compromise the correct functioning of the appliance.
The appliance should be filled slowly to allow any air bubbles to be released through the appropriate vents
within the heating system. In closed circuit heating systems, the cold filling pressure of the system must
correspond to the expansion vessel pre-inflation pressure.
In heating systems with an
open
vessel, the circulating liquid may come into contact with the air.
During colder months when the heating system is in use, the end user must check the level of water
circulating in the expansion vessel regularly. The water content of the recirculation system must
remain constant. Practical experience shows that a regular check of the water level must be carried
