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Installer reference guide
19
EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05
6 Preparation
Do NOT install the unit in places such as:
Q
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.
Q
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 Sound spectrum due to
environmental noise and sound reflections.
Q
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.
Q
In places with high humidity (max. RH=85%), for example a
bathroom.
Q
In places where frost is possible. Ambient temperature around
the indoor unit should be >5°C.
Q
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
Q
Use the indoor unit only in a closed water system.
Using the system in an open water system will lead to excessive
corrosion.
Q
The maximum water pressure is 4 bar.
Provide adequate safeguards in the water circuit to ensure that
the maximum pressure is NOT exceeded.
Q
All installed piping and piping accessories (valve,
connections,…) must withstand the following temperatures:
Q
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.
Q
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the unit.
Q
Provide drain taps at all low points of the system in order to allow
complete drainage of the water circuit.
Q
Provide a proper drain for the pressure relief valve to avoid
water coming into contact with electrical parts.
Q
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.
Q
Only use materials that are compatible with water used in the
system and with the materials used in the indoor unit.
Q
Check that all components in the field piping can withstand the
water pressure and water temperature.
Q
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.
Q
Never use Zn-coated parts in the water circuit. Because the
unit's internal water circuit uses copper piping, excessive
corrosion may occur.
Q
Only use appropriate tooling to handle brass, which is a soft
material. If NOT, pipes will get damaged.
Q
Select the water piping diameter in relation to the required water
flow and the available external static pressure of the pump. See
"14 Technical data" on page 69 for the external static pressure
curves of the indoor unit.
Q
You can find the minimum required water flow for the indoor unit
operation in the following table. When the water flow is lower,
flow error 7H will be displayed and the indoor unit will be
stopped.
Q
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.
Q
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.
Q
It is strongly recommended to install an additional filter on the
heating water circuit. Especially to remove metallic particles
from the filed heating piping, it is advised 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.
Q
If air, moisture or dust gets into the water circuit, problems may
occur. To prevent this:
Q
Only use clean pipes
Q
Hold the pipe end downwards when removing burrs.
INFORMATION
The following illustration is an example and may NOT
match your system layout.
65°C
65°C
M
M
T
FCU2
FCU3
FHL1
FHL2
FHL3
a
b c
d
e
f
g
f
h
i
i
i
i
j
k
l
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)
FHL1...3
Floor heating loop
T
Room thermostat (optional)
Model
Minimum water flow (l/min)
04
5
08+16
11
Summary of Contents for ERHQ011BA
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