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13
6,5 ÷ 7,8
µS/cm
250 ÷ 800
°F
5 ÷ 20
ppm
0,2
ppm
< 0,05
ppm
< 250
1.15
EN
INSTALLATION
The internal water supply circuit has a two-way modulating
valve, driven directly from the interface by the machine
controller, which monitors the temperature of the water
leaving the exchanger adjusting the flow to the exchanger
to maintain the 10°C target in heating and 35°C target in
cooling, so as to minimise consumption and maximise
performance.
The KVS of the valve used is:
Kv (m³/h with ∆p = 100kPa = 1bar) = 1.2
The general expression (valid for water or technically similar
fluids) for the calculation of load losses, knowing the flow
rate value, is the following:
Hydraulic and chemical characteristics of water
During the initial start-up, the specialised technician must
measure the system water reference values using the special
test kits.
System water reference values
pH
Electrical conductivity
Total hardness
Total iron
Manganese
Chlorides
Sulphur ions
absent
Ammonia ions
absent
If the total hardness is above 20°F, or some make-up water
reference values do not fall within the indicated limits, contact
our pre-sales service to determine the treatments to be
implemented.
Well or non-aqueduct water must always be analysed carefully
and, if necessary, conditioned by means of suitable treatments.
If a water softener is installed, in addition to following the
manufacturer's instructions, adjust the hardness of the
outlet water above 5°F (also performing pH and salinity
tests) and check the outlet chloride concentration after resin
regeneration.
Содержание AW-XDO009-H11
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