iglu Aleut Series, Руководство по установке

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Flow through the heating system
A bypass is required in the mixing circuit, if an adjustable circulation pump is used, which is
controlled by differential pressure. Bypass is not included with the heat pump. If a buffer tank
bypass is installed in parallel with the heating system, no bypass is required.
Heating system filter and valves
The heat pump does not include a filter and a safety valve. These components must be
installed on the pre-prepared heating system return line. The safety valve shall be installed vertically.
WARNING!
Do not leave the safety valve closed.
Internal circuit circulation pump
The internal circuit pump is included in the heat pump set and is installed in the device at the
factory. The Grundfos UPM3 pump (see, Annex No 2) is the most commonly used for the internal
circuit, and the UPMXL heat pumps with a capacity of more than 9 kW (see, Annex No 2). The
circulation pump is controlled by the central processor while maintaining optimal flow. The control
system monitors the operation of the circulation pumps and a warning is received in the event of a
deviation.
Heating system rinsing and filling
The heat pump is an integral part of the heating system. Heat pump failures are usually caused
by poor water quality in the heating system, or by presence of air in the system. The presence of air
in the system produces corrosive products such as magnetite or sediment. Magnetite has an
abrasive effect that is especially enhanced in pumps, valves, or eddy-flow components, such as a
condenser. Prior to installing a heat pump in a heating system that needs to be filled or uses water
that is not pure, auxiliary measures such as the installation of filters and automatic outlets must be
taken. Filling with untreated drinking water will inevitably result in formation of a sediment. Effect:
formation of limescale deposits on the heat transfer surfaces. Decreased efficiency and energy
consumption increases. 1 millimetre of lime deposits causes an energy loss of 10%. In extreme
cases, this can even damage the heat exchangers.
Do not use water treatment additives in the heating system. Additives can be used to adjust the
pH of the water, the recommended pH of the water is 7.5-9. The safest and most efficient operation
of the system is achieved by using low-salt water.
When combining a heat pump with a boiler, it may be necessary to fill the system with
desalinated water to protect the boiler from corrosion. This reduces electrical conductivity and risk of
corrosion.
WARNING!
Sediment in the piping can damage the heat pump. To prevent this, make sure to flush the
pipes.
Damage to sediment and corrosion heating systems is low if:
- planning and start-up are carried out properly;
- the system is closed in terms of corrosion;
- pressure in the heating system is adequate;