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TECNIKA 28-35
USE AND INSTALLATION MANUAL
Chapter
4
page 21
Installing
Technical dept. - All rights reserved - Reproduction prohibited
4.4.
System connection
It is advisable for the connections to 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 to add a suitable inhibitor shall invalidate the
appliance guarantee.
4.5.
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
out every fortnight to keep the water content almost constant. If more water is required, perform
the filling process, when the hot water 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.
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.
