6
1.54
Ultra
Comfortable indoor climate in high-end interiors
Installation and operating instructions
1.1 Limits of operation and use
We would refer to VDI-2035 Sheets 1 & 2, DIN EN 14336 and DIN EN 14868
with regard to the properties of the medium used to protect the equipment.
The following values provide further guidance.
The water used should be free of contamination, such as suspended
substances and reactive substances.
*1
at 20 °C
Limits of operation
Min./max. water temperature
°C
5 – 90
Min./max. air intake temperature
°C
-20 to +40
Min./max. air humidity
%
15 – 75
Max. operating pressure
bar
16
Min./max. glycol percentage
%
25 – 50
Height when ceiling-mounted (max.)
approx. 4 m (with model 96), refer to
the technical catalogue for the Ultra
for more detailed information on
other models
Water quality
pH value
*1
8 – 9
Conductivity
*1
S/cm
< 700
Oxygen content (0
2
)
mg/l
< 0.1
Hardness
°dH
4 – 8.5
Sulphur ions (S)
not measurable
Sodium ions (Na
+
)
mg/l
< 100
Iron ions (Fe
2+
, Fe
3+
)
mg/l
< 0.1
Manganese ions (Mn
2+
)
mg/l
< 0.05
Ammonia ions (NH
4+
)
mg/l
< 0.1
Chlorine ions (Cl)
mg/l
< 100
CO
2
ppm
< 50
Sulphate ions (SO
4
2-
)
mg/l
< 50
Nitrite ions (N0
2
-
)
mg/l
< 50
Nitrite ions (N0
3
-
)
mg/l
< 50