Hiflex
104 All Versions
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11.5 - Water control valve (models W/H)
A modulating valve controls the condensation pressure by controlling the water
flow to the plate condenser. It is installed at the condenser outlet with the pres
sure probe in the refrigerant drain line. It is automatically closed when the com
pressor is not working.
It provides for cost saving reducing water consumption. It is sized for inlet water
flow temperature values lower than 17C (well water) ensuring a low value for
pressure drop.
To define a proper water flow value depending on the specific operation fea
tures, refer to the performance tables of the units W.
For higher water inlet temperatures (tower water) there must be higher water
flows; if the water control valve is required for these special conditions, see the
section "Special water control valves" in the section of the "Special configura
tions".
Water control valve features
Models
4-5 W 6-7 W 8-9 W/H
outlet connections
inch BSP int. 1/2" 3/4" 3/4"
code
378201 378202 378202
valve pressure drop at 0.05 l/s
kPa 1
valve pressure drop at 0.1 l/s
kPa 4 2
valve pressure drop at 0.2 l/s
kPa 14 5 5
valve pressure drop at 0.3 l/s
kPa 12 12
valve pressure drop at 0.4 l/s
kPa 22
11.6 - Flooding alarm (Liquistat)
The flooding alarm perceives the presence of water or another conductive liquid and, by opening a circuit,
it causes an alarm.
There are no moving parts and it is not subject to dirt or vibrations. Several sensors can be connected
to the same flooding alarm device to control many points in the room. The alarm device is supplied with
a sensor. Additional sensors can be ordered separately.
11.7 - Smoke alarm (Smokestat)
A smoke alarm can be installed to close the conditioning system when
the presence of smoke in the return air is perceived.
This is an optic smoke detector (it uses the Tyndall effect), which absorbs
a current with very low intensity (100 A), totally insensitive to light or
wind.
11.8 - Fire alarm (Firestat)
In some applications, the fire prevention norms require the installation of an alarm device (Firestat) that
disables the conditioner if the return air temperature is particularly high.
This detector provided with an NTC thermistor has a very low current absorption (25-55 A).
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