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TECHNICAL POSSIBILITIES AND CHEMICALS FOR PROTECTION OF HYDROTHERMAL HEATING
SYSTEMS
Effects of the hard unconditioned water and related corrosion processes are generally known. Therefore, there
are plenty of producers of “heating chemicals“ for the filling and circulating water conditioning, anti-corrosion
protection and cleaning of clogged systems.
The producer is not authorized to recommend any specific tool. Responsibility of their selection, way of
application, technical effect and warranty lies with both the producer and the user.
Heating chemicals must be chosen carefully, always after the agreement with the producer. Selection should be
made after checking the following known details:
- filling water hardness,
- filling water aggressiveness,
- materials of heating system (steel, copper, cast iron, plastic, aluminium and its combinations),
- type of the heating system (thermosiphon, forced circulating with expansion tank, floor heating).
It is also important to observe the proper starting dosage and refilling the heating chemicals during the
operation. A professional product should include a description of a procedure for determination of the chemicals
concentration in the circulating water.
Other possibilities of water conditioning in the cation-ion exchanger or desalting with reverse osmosis for
economic reasons in smaller systems are out of the question. For the same reasons, physical water conditioning
in small heating systems is limited to the magnetic conditioning, which only prevents the scale production.
Connection of heat pump to the heating system – hydraulics
Connection of the heat pump to the heating system must be made by an authorized installation company, or
after agreement and training by a professional company from the heating industry. Types of connection are
pictured below.
Attention, pool water mustn´t enter the plate exchanger! Always use an extra exchanger!
Attention, water of more than 60°C from another source mustn´t enter the plate exchanger!
Example 1: Heating of the accumulation tank to equitherm or constant temperature.
outdoor
temperature
sensor
ATW-Mini
expansion
tank
31
tank
electric
heater
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