red
COMPACT 24 BOILER
Chapter
6
USE AND MAINTENANCE MANUAL
page
24
Hydraulic and electrical connection
Technical dept. - All rights reserved - Reproduction prohibited
6.2.
Cleaning the system
It is compulsory for the connections to be easy to disconnect by means of swivel pipe unions. Fit suitable cut-off
gate valves on the heating system piping.
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 products. 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.
Caution: failure to wash the heating system and to add a suitable inhibitor shall invalidate the
appliance guarantee and that of other accessories, such as the pump and valves.
6.3.
Filling the system
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 out every fortnight to
keep the water content almost constant. If more water is required, perform the filling process, when the
boiler has cooled down to room temperature. These precautions are designed to prevent the occurrence
of heat stress on the steel body of the boiler.
In systems featuring a open vessel, the water pressure in the boiler - with the system cold - must not
drop below 0.3 bar;
The water used to fill the heating system must be purified and not contain any air.
Caution!
Do not mix the heating water with anti-freeze or anti-corrosion products
in the wrong concentrations! This could damage the seals and cause noisy
operation.
RED will not be held liable for any damage to persons, animals or property
caused by failure to observe the above instructions.
Once all the hydraulic connections have been made, check the seals under pressure by filling the
boiler.
