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6 Preparation
>10
>10
(mm)
Do NOT install the unit in places such as:
▪ Where there is mist of mineral oil, oil spray or vapour.
Plastic parts may deteriorate, and cause them to fall out or water
to leak.
▪ Do NOT install the unit in sound sensitive areas (e.g. near a
bedroom and the like), so that the operation noise will cause no
trouble.
Note: If the sound is measured under actual installation
conditions, the measured value will be higher than the sound
pressure level mentioned in "14.8 Sound spectrum" on page 83
due to environmental noise and sound reflections.
▪ The foundation must be strong enough to bear the weight of the
unit. Take the weight of the unit with a domestic hot water tank full
of water into account.
Make sure, in the event of a water leak, water cannot cause any
damage to the installation space and surroundings.
▪ In places with high humidity (max. RH=85%), for example a
bathroom.
▪ In places where frost is possible. Ambient temperature around the
indoor unit should be >5°C.
▪ The indoor unit is designed for indoor installation only and for
ambient temperatures ranging 5~35°C in cooling mode and
5~30°C in heating mode.
6.2
Preparing water piping
6.2.1
Water circuit requirements
▪ Use the indoor unit only in a closed water system.
Using the system in an open water system will lead to excessive
corrosion.
▪ The maximum water pressure is 4 bar.
Provide adequate safeguards in the water circuit to ensure that
the maximum pressure is NOT exceeded.
▪ All installed piping and piping accessories (valve, connections,...)
must withstand the following temperatures:
INFORMATION
The following illustration is an example and may NOT
match your system layout.
Installer reference guide
20
89°C
b
j
k
65°C
a
c
d
g
f
e
f
M
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Pump
f Stop valve
g Motorised 3-way valve
h Motorised 2-way valve (field supply)
i Collector
j Domestic hot water tank
k Heat exchanger coil
HPC1...3 Heat pump convector (optional)
FHL1...3 Floor heating loop
▪ Make all water piping connections in accordance with the
applicable legislation and the outlook diagram that is delivered
with the unit, respecting the water inlet and outlet.
▪ Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the unit.
▪ Provide drain taps at all low points of the system in order to allow
complete drainage of the water circuit.
▪ Provide a proper drain for the pressure relief valve to avoid water
dripping out of the unit. See "7.3.2 To connect the pressure relief
valve to the drain" on page 26.
▪ Provide air vents at all high points of the system, which must also
be easily accessible for servicing. An automatic air purge is
provided in the indoor unit. Check that the air purge is NOT
tightened too much, so that automatic release of air in the water
circuit is possible.
▪ Only use materials that are compatible with water used in the
system and with the materials used in the indoor unit.
▪ Check that all components in the field piping can withstand the
water pressure and water temperature.
▪ 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.
▪ Never use Zn-coated parts in the water circuit. Because the unit's
internal water circuit uses copper piping, excessive corrosion may
occur.
▪ Only use appropriate tooling to handle brass, which is a soft
material. If NOT, pipes will get damaged.
ERHQ011~016BA + ERLQ011~016CA + EHVH/X16S18+26CA
i
i
HPC1
h
HPC2
HPC3
i
M
i
FHL1
FHL2
FHL3
Daikin Altherma - Low Temperature Split
4P313777-1C – 2012.11
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