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The boiler pipes have to be connected to the installation by means of compression
fittings. For connecting to thick-walled pipe (welded or fitted), adapters should be used.
When removing the plastic sealing caps from the pipes, contaminated testing
water may be released.
If all, or a substantial part of the radiators have thermostatic radiator valves, a pressure
regulator has to be used to prevent flow problems in the installation. The pressure
regulator used should have the same diameter as the connecting diameter of the supply
and return pipe of the boiler. See also chapter 5.1.
An Adey Magnaclean or Fernox TF1 filter is recommened to be installed,
preferably on the return pipework as close to the boiler practitable.
Additives in the installation water are only permitted in consultation with the
country distributor. ATAG Heating UK Ltd recommend the use of either Fernox
or Sentinel products.
6.2 Heating systems with plastic pipes
When connecting or using an underfloor heating system, designed with plastic pipes, or
plastic pipes are used elsewhere in the installation,one should ensure that the plastic
pipes used comply with the DIN 4726/4729 standard. It is set out in this standard that the
pipes may not have oxygen permeability higher than 0.1 g/m³.d at 40°C. If the system
does not comply with this DIN standard, the underfloor heating component will have to
be separated from the central heating appliance by means of a plate exchanger.
No recourse can be made to the terms of the warranty in the event of failure to
observe the regulations pertaining to plastic underfloor heating pipes.
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