Room Volume For Bi-Bloc System; Assembly Conditions And Minimum Distances From Hydromodule - Panasonic WH-SDF03E3E5 Series Design Handbook

5.8.1 Room volume
for bi-bloc system
Note
Attention
5.8.2 Assembly conditions
and minimum distances
from hydromodule
Aquarea air / water heat pump – design handbook 07 / 2014
With a bi-bloc system, the refrigerant is partly inside the building, which
must be considered with respect to minimum room volume. According to
EN 378, the minimum required volume for a heat pump installation room
(V ) according to EN 378 T1 is calculated as follows:
min
G
V =
min c
G = amount of refrigerant in kg
c = practical limit value in kg / m³ (for R410A c = 0.44 kg / m³
The refrigerant and the amount of refrigerant differs for individual mod-
els and is dependent upon additional refrigerant filling that exceeds the
pre-filled pipe length. Details on this can be derived from the technical
data.
The refrigerant may not be mixed with or be replaced by a different
type of refrigerant. Using a different refrigerant can lead to damage
to the unit and also to safety problems.
The manufacturer assumes no responsibility and provided no guaran-
tee for the application of refrigerants of a different type apart from
R410A for the series Aquarea LT and T-CAP and R407C for the series
Aquarea HT.
• No heat or steam source can be located near the hydromodule. Also
laundry houses or other rooms with higher humidity are unsuitable,
since high humidity leads to rust and can damage the unit.
• Adequate circulation of air must be provided inside the room.
• The condensate drained from the hydromodule should be easily
channelled out because it can cause damage if not correctly drained.
(if cooling is going to be delivered from heat pump)
• Noise inside the room should be considered.
• Do not install the unit near the door.
• The minimum distances (see Figure) must be observed.
• The hydromodule must be installed vertically on the wall, whereby the
wall should be thick and dense so that no vibration occurs.
• In case electrical units are installed on wooden buildings with metallic
or cable strips in accordance with the corresponding standards for
electrical work, no electrical contacts are permitted between the unit
and building.
• The hydromodule is only developed for internal installation and may
not be installed outside.
Planning of installation room
Room volume for bi-bloc system | Assembly conditions
and for R407C c = 0.31 kg / m³)
Project Design
77