Daikin Altherma EVLQ05+08CA Installer's Reference Manual page 47

EVLQ05+08CAV3 + EHYHBH05AF + EHYHBH/X08AF + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1F – 2020.10
▪ Non-brass metallic piping. When using non-brass metallic piping, insulate the
brass and non-brass properly so that they do NOT make contact with each other.
This to prevent galvanic corrosion.
▪ Valve – Separating circuits. When using a 3-way valve in the water circuit make
sure that the domestic hot water circuit and the floor heating circuit is fully
separated.
▪ Valve – Change‑over time. When using a 2-way valve or a 3-way valve in the
water circuit, the maximum change-over time of the valve must be 60 seconds.
▪ Filter. It is strongly recommended to install an additional filter on the heating
water circuit. Especially to remove metallic particles from foul heating piping, it is
recommended to use a magnetic or cyclone filter, which can remove small
particles. Small particles may damage the unit and will NOT be removed by the
standard filter of the heat pump system.
▪ Dirt separator – Old heating installations. In case of old heating installations, it
is recommended to use a dirt separator. Dirt or sediment from the heating
installation can damage the unit and reduce its lifetime. The domestic hot water
circuit can also be protected by a filter to prevent failure during domestic hot
water operation.
▪ Domestic hot water tank – Capacity. To avoid stagnation of water, it is
important that the storage capacity of the domestic hot water tank meets the
daily consumption of domestic hot water.
▪ Domestic hot water tank – After installation. Immediately after installation, the
domestic hot water tank must be flushed with fresh water. This procedure must
be repeated at least once a day the first 5 consecutive days after installation.
▪ Domestic hot water tank – Standstills. In cases where during longer periods of
time there is no consumption of hot water, the equipment MUST be flushed with
fresh water before usage.
▪ Domestic hot water tank – Disinfection. For the disinfection function of the
domestic hot water tank, see
▪ Domestic hot water tank – 3rd party tank installation. When installing a 3rd
party tank, take following requirements into account:
- coil size should be ≥0.45 m
- water piping is ≥3/4" to avoid high pressure drops,
- a sensor pocket is foreseen at a correct place (above the heating coil). The tank
sensor should not be in contact with water.
- maximum tank set point for a 3rd party tank is 60°C,
- in case of an electrical heater in the tank, make sure it is installed correctly
(above the heating coil).
Refer to the installation manual of the domestic hot water tank for more
information.
▪ Thermostatic mixing valves. In accordance with the applicable legislation, it may
be necessary to install thermostatic mixing valves.
▪ Hygienic measures. The installation must be in compliance with the applicable
legislation and may require additional hygienic installation measures.
▪ Recirculation pump. In accordance with the applicable legislation, it may be
required to connect a recirculation pump in between the hot water end point
and the recirculation connection of the domestic hot water tank.
"Domestic hot water control:
2
,
6 Preparation
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4
advanced" [ 154].
Installer reference guide
47