Daikin Altherma R Hybrid Installer's Reference Manual page 41

CHYHBH05+08AF + EHYKOMB33A
Daikin Altherma R Hybrid
4P471761-1E – 2020.10
▪ Connecting piping – Air, moisture, dust. If air, moisture or dust gets into the
circuit, problems may occur. To prevent this:
- Only use clean pipes
- Hold the pipe end downwards when removing burrs.
- Cover the pipe end when inserting it through a wall, to prevent dust and/or
particles from entering the pipe.
- Use a decent thread sealant to seal connections.
▪ Closed circuit. Use the indoor unit ONLY in a closed water system. Using the
system in an open water system will lead to excessive corrosion.
▪ Piping length. It is recommended to avoid long runs of piping between the
domestic hot water tank and the hot water end point (shower, bath,...) and to
avoid dead ends.
▪ Piping diameter. Select the water piping diameter in relation to the required
water flow and the available external static pressure of the pump. See
4
"15 Technical data" [
unit.
Minimum required flow rate
05+08 models
▪ Field supply components – Water. Only use materials that are compatible with
water used in the system and with the materials used in the indoor unit.
▪ Field supply components – Water pressure and temperature. Check that all
components in the field piping can withstand the water pressure and water
temperature.
▪ Water temperature – Heat pump convectors. In case heat pump convectors are
connected, the temperature of the water in the convectors should NOT exceed
65°C. If necessary, install a thermostatic controlled valve.
▪ Water temperature – Underfloor heating loops. In case underfloor heating
loops are connected, install a mixing station to prevent water that is too hot from
entering the underfloor heating circuit.
▪ Water temperature. All installed piping and piping accessories (valve,
connections,...) MUST withstand the following temperatures:
INFORMATION
The following illustration is an example and might NOT match your system layout.
191] for the external static pressure curves of the indoor
9 l/min
6 Preparation
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Installer reference guide
41