17
DHW
probe
secondary
pump
of fancoil
from
fancoil
to radiant panel
from water supply
to DHW fixtures
5.6.1
Features of the circuit water
To guarantee correct operation of the unit, the water must be appropriately filtered (see the instructions at the start of this
paragraph) and there must be only a minimum amount of dissolved substances. The maximum allowed values are shown below
MAXIMUM CHEMICAL-PHYSICAL PROPERTIES ALLOWED FOR THE CIRCUIT WATER
PH
7.5 - 9
Electrical conductivity
100 - 500
μS/cm
Total hardness
4.5 – 8.5 dH
Temperature
˂ 65°C
Oxygen content
< 0.1 ppm
Max glycol quantity
40 %
Phosphates (PO
4
)
˂ 2ppm
Manganese (Mn)
< 0.05 ppm
Iron (Fe)
< 0.3 ppm
Alkalinity (HCO
3
)
70 – 300 ppm
Chloride ions (Cl-)
< 50 ppm
Sulphate ions (SO
4
)
< 50 ppm
Sulphide ions (S)
None
Ammonium ions (NH
4
)
None
Silica (SiO
2
)
< 30 ppm
5.6.2
Typical plumbing diagram
A recommended connection diagram is shown below .
5.6.3
Handbook
If you need more information about the possible configurations, there is a handbook which is a technical notebook including a
series of system diagrams that have been highlighted regarding the installation configuration of our high efficiency heat pumps.
The Handbook is also intended to show the symbiosis potential with some of our elements found in the catalogue.
Consult the technical notebook at our headquarters.
5.6.4
Condensation discharge system
All
HPE R32
units are built in such a way that the base of the unit acts as a condensate drip tray. A plastic fitting is standard
supplied to be connected below the base in the specific slot in order to connect a pipe which channels the condensate.
Hole in bottom panel of
outdoor unit
Gasket
Gasket
Drain fitting
