A restricting factor to VDI 2035 is that the partial softening of the water below
6 °dH is not permissible. Apply full desalination only in conjunction with pH stabili-
sation.
Underfloor heating circuits must be considered separately. In this connection, con-
tact a manufacturer of water additives or the pipework supplier (see above).
Adherence to the conditions issued by BAXI is vital to safeguard the warranty.
Further information on the heating water
- The water must not have any foreign matter, such as sweat beads, rust particles,
scale or sludge. During filling, flush the system until only clean water runs out.
When flushing the system,ensure that the water does not flow through the heat
exchanger in the boiler, that the thermostatic radiator valves are removed and
the valve inserts are set to the maximum flow rate.
- If additives are used it is important to follow the instructions of the manufactur-
er.
If, in a special case, it is necessary to use additives in a mixture (e.g. hardness
stabiliser, frost protection agent, sealing agent,etc.) it has to be observed that
the agents are compatible with each other and the pH-value is not altered. Pref-
erably, agents from the same manufacturer should be used.
- For buffer cylinders in conjunction with solar thermal systems or solid fuel boil-
ers, take the buffer capacity into consideration when determining the fill water
volume.
4.12 Treating and preparing the
heating water
Determining the system volume
The total water volume in the heating system is composed of the system volume
(= fill water volume) plus the top-up water volume. I
Over
the entire service life of the boiler, a maximum top-up volume of twice the system
volume is assumed.
Additives
The following products are currently approved by BAXI:
- „Full heating protection“ from Fernox (www.fernox.com)
- „Sentinel X100“ from Guanako (www.sentinel-solutions.net)
- „Jenaqua 100 and 110“ from Guanako (www.jenaqua.de)
- „Vollschutz Genosafe A“ from Grünbeck
- "Care Sentinel X100" from Conel (www.conel-gmbh.de)
Complete softening
As a general rule, fully desalinated water can always be used, although a pH value
stabiliser is also required. The following products for producing fully desalinated
water have been tested and approved:
- „Complete softening (VE) GENODEST Vario GDE 2000" from Grünbeck
(www.gruenbeck.de)
- more devices on request
Prior to installation
43
To Next Page
Loading...
