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Verfügbare Sprachen
Verfügbare Sprachen
Models
Water contents
Plate heat exchangers
Protection from corrosion
Do not use corrosive water, containing scale or debris; the following are the corrosive limits for the heat exchangers:
pH
SO4--
HCO3-/SO4--
Total hardness
CI
PO43-
NH3
Fe+++
Mn++
CO2
H25
temperatures
Oxygen content
Alkalinity (HCO3)
Electrical Conductivity
Nitrates (NO3)
If you are not reasonably sure of the water quality in the table above or if there are doubts concerning the presence of different materials which could cor-
rode the heat exchanger over time, it is always advisable to insert an intermediate heat exchanger which can be inspected, made of materials that are able
to resist these substances.
Protecting the unit from frost
Indications for unit when not running
IMPORTANT!
If the unit is not used during the winter period, the water contained in the system may freeze.
IMPORTANT!
When the unit is out of service, drain all the water from the circuit.
The entire circuit must be drained in good time. A drainage point below the water exchanger must be used to make sure all the water empties out. Moreo-
ver, use the valves placed in the lower part of the water exchanger so that is empties completely. If the draining operation is felt to be too much trouble,
ethylene glycol may be mixed with the water in suitable proportions in order to guarantee protection from freezing. Units are available with an antifreeze
heater (accessory) to keep the evaporator intact, should the temperature drop excessively.
IMPORTANT!
The unit must not be isolated from the electrical power supply during the entire seasonal stoppage
Indications for unit when running
When the unit is running, the control board protects the heat-exchanger from freezing by tripping the antifreeze alarm which stops the machine if the temper-
ature of probe fitted on the heat-exchanger reaches the set point value. The resistance of the water side primary heat exchanger (RA accessory) and the
electric pump unit (RAE accessory), prevents undesired effects due to freezing during the operating breaks in winter (provided the unit remains powered).
H5xxxxx
66
270-10
285-11
l
6,3
6,3
7.5÷9.0
< 70
> 1.0
4.0÷8.5
< 50
< 2.0
< 0.5
< 0.2
< 0.05
< 5
< 50
< 65
< 0.1
70÷300
10÷500
< 100
EasyPACK ECO - Nias
2100-12
2110-13
2120-14
8,2
8,2
8,2
ppm
ppm
dH
ppm
ppm
ppm
ppm
ppm
ppm
ppb
°C
ppm
ppm
µS/cm
ppm
2140-15
2150-16
12,2
12,2
66
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