14
3061490_0709
Installation
Information regarding scaling
The build-up of scale can be substantially influenced by
the way the system is commissioned. When the system
is heated up at low loads or slowly step by step, calcium
can settle, not only on the hottest parts, but also over the
entire system, maybe even as sludge. For multi-boiler
systems it is recommended that all boilers are started
simultaneously, which prevents a calcium concentration
over the heat transfer surface of a single boiler.
If appropriate, start with the screed drying program.
Heating water
Only use untreated tap water as fill or top up water for
heating systems.
Chemical additives or water from an ion exchanger are
not permissible.
Thoroughly flush the heating system prior to filling with
water.
Dirt trap
Install the dirt trap for all systems on site in the return
pipe to protect the boiler and pump from coarse dirt and
sediments.
Sludge separator
Install a sludge separator upstream of the boiler in the
return pipe of all older systems which are predominantly
equipped with steel pipework.
Air separator
An additional air separator can be installed in larger
systems.
For CGB-35, the maximum permissible flow rate is 2000
l/h and 2800 l/h for the CGB-50; therefore, never install
an additional pump.
When using pipes which are permeable to oxygen, e.g.
underfloor heating systems, provide system separation
by using a heat exchanger. Unsuitable heating water
increases the risk of sludge formation and corrosion. This
may lead to faults and heat exchanger damage.
Summary of Contents for CGB-35
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