6 | Preparation
Installer reference guide
58
ERGA04~08DAV3(A) + EHBH/X04+08DA*V7
Daikin Altherma 3 R W
4P618958-1 – 2020.03
INFORMATION
The following illustration is an example and might NOT match your system layout.
M
FCU1
FCU2
FCU3
i
M
FHL1
FHL2
FHL3
j
l k
fd ecba
f
g
h
i
i
i
T
65°C
89°C
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Pump
f Shut-off valve
g Motorised 3-way valve (supplied with the domestic hot water tank)
h Motorised 2-way valve (field supply)
i Collector
j Domestic hot water tank
k Heat exchanger coil
l Booster heater
FCU1...3 Fan coil unit (optional) (field supply)
FHL1...3 Floor heating loop (field supply)
T Room thermostat (optional) (field supply)
▪ Drainage – Low points. Provide drain taps at all low points of the system in order
to allow complete drainage of the water circuit.
▪ Drainage – Pressure relief valve. Connect the drain hose properly to the drain to
avoid water dripping out of the unit. See "7.4.4To connect the drain hose to the
drain"[478].
▪ Air vents. Provide air vents at all high points of the system, which must also be
easily accessible for servicing. Two automatic air purges are provided in the
indoor unit. Check that the air purges are NOT tightened too much, so that
automatic release of air in the water circuit is possible.
▪ Zn-coated parts. Never use zinc coated parts in the water circuit. Because the
internal water circuit of the unit uses copper piping, excessive corrosion may
occur.
▪ 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.
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