EAS ELECTRIC ETHKH100A190 Manual De Instrucciones página 57

Water may enter into the flow switch and cannot be drained out, it may freeze when the temperature is low
enough. The flow switch should be removed and dried, then can be reinstalled in the unit.
1.Counterclockwise rotation, remove the flow switch.
2.Dry the flow switch completely.
Be careful not to deform the unit's piping by using excessive force when connecting the piping.
Deforming the piping may lead to malfunction of heat pump.
If air, moisture or dust gets in the water circuit, problems may occur. Therefore, always take into account the
following when connecting the water circuit:
 Use clean pipes only.
 Hold the pipe end downwards when removing burrs.
 Cover the pipe end when inserting it through a wall to prevent dust and dirt entering.
 Use a good thread sealant for sealing the connections. The sealing must be able to withstand the pressures and
temperatures of the system.
 When using non-copper metallic piping, be sure to insulate two kind of materials from each other to prevent
galvanic corrosion.
 As copper is a soft material, use appropriate tools for connecting the water circuit. Inappropriate tools will cause
damage to the pipes.
The unit is only to be used in a closed water system. Application in an open water circuit can lead to excessive
corrosion of the water piping:
Never use Zn-coated parts in the water circuit. Excessive corrosion of these parts may occur as copper piping
is used in the unit's internal water circuit.
When using a 3-way valve in the water circuit. Preferably choose a ball type 3-way valve to guarantee full
separation between the domestic hot water and floor heating water circuit.
When using a 3-way valve or a 2-way valve in the water circuit. The recommended maximum changeover
time of the valve should be less than 60 seconds.
1
2
There need drying
Fig 6-7
NOTE
CAUTION
NOTE
17 V.2