Panasonic Aquarea WH-SDC09H3E5-1 - Assembly Conditions for the Compact Device

96 Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Planning
97
Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Planning
Example of an installation room with hydro-module and hot water tank PAW-TD20C1E5
Front view Plan view
3
4
500
595 400400
200
200
200
1265
400400
~ 2,5 m²
800
2500
1200
800
340
1
2
5
1
2
2100
3
4
500
595 400400
200
200
200
1265
400400
~ 2,5 m²
800
2500
1200
800
340
1
2
5
1
2
2100
1 Domestic hot water tank
2 Hydro-module
3 Hot water outlet
4 Domestic cold water entry
5 Door to the installation room
!
IMPORTANT
Due to the available space of about 6.25 m³, the installation space in this example is only suit-
able for single- phase devices of the Aquarea LT series of up to 9 kW. The use of devices with
a larger quantity of coolant will exceed the practical limit c (for R410A, c = 0.44 kg/ m³ and for
R407C, c = 0.31 kg/ m³).
5.2.3 Setting up the Compact system
The compact system consists of a device, which has one or two fans, depending on the output
and model. So the devices differ according to the output (→ 1 Model range, p. 8).
In the case of water pipelines of a compact device to a building, these are hot water pipelines
that are routed directly in contact with the outdoor air. As the water lines can freeze at outside
temperatures below 0 °C, they must be insulated according to the locally valid European, na-
tional and regional specications and guidelines.
Example of Germany: The lines are to be insulated according to the current energy saving
ordinance (EnEV 2014) with double the minimum thickness according to annexure 5, table 1,
lines 1 to 4, but not less than 40 mm, relating to a thermal conductivity of 0.035.(m x K).
CAUTION
Danger of water pipes freezing in outside temperatures below 0 °C
If the heating circuit in the compact system is lled with water and the outside temperature falls
below 0 °C, the risk exists in the compact system that the water pipes may freeze. This can
cause a lot of damage to the device.
The client should therefore ensure the absence of frost by taking one of the following
measures:
► Operate the heating circuit using a food-safe antifreeze mixture (propylene glycol).
► Provide an additional cabinet heating in the compact device, to prevent the heating
circuit from freezing up.
► Empty the heating circuit by using a built-in device (manually or automatically) before
freezing starts.
i
Note
Example of Germany: Details about preventing freezing of water-bearing pipelines and the heat
and cold protection are according to the VDI Guidelines VDI 2055 or VDI 2069.
5.2.3.1 Assembly conditions for the compact device
The assembly conditions for the compact device are as follows:
● The compact device has only been developed for outdoor installation and must not
be installed indoors.
● For condensation water drainage in defrosting mode, drainage is recommended
via a
drain pipe to the frost-free ground with gravel ll (→ 5.2.3.3 Securing the compact
device, p. 99 ).
● It should be possible to smoothly divert the condensate from the device.
● Maintain the minimum distances (→ 5.2.3.2 Minimum distances for compact de-
vice, p. 98).
● The heat emission of the compact device must not be impeded by additional pro-
tection devices such as awnings or such.
● No objects should be put up that can cause short-circuiting of the exhaust air. Even
when using multiple compact devices (e.g. in case of heat pump cascades),
avoid air
ow short-circuiting on the side of air (→ 5.2.3.3 Securing the compact device, p. 99).
● The operating sound of the compact device must not cause any stress to the user
or to neighbours. Air-to-water heat pumps may in certain countries or regions re-
quire permission. All provisions regarding noise valid at the location must be taken
into account (→ 5.2.1 Acoustics, p. 87).
● In addition, use vibration- damping rubber buffers for isolation.
● If installing the compact device near to the sea, in regions with a high content of
sulphur or at sites where large quantities of oil (e.g. machine oil, etc.) are present,
its operating life may be shortened.
● In the case of installation locations experiencing strong winds e.g. on building roof-
tops or between buildings, the compact device must be additionally secured to the
side of the building to prevent tipping over (e.g. by bracing).