7
TOP unit heaters
1.53
Unit heaters (2-stage three-phase motor/1-stage AC single-phase motor/continuously variable EC single-phase motor)
Installation and operating instructions
The installer of these units should have adequate knowledge of
the following gained from specialist vocational training:
Safety and accident prevention regulations
Guidelines and recognised technical regulations, i.e.
Association of German Electricians (VDE) regulations, DIN
and EN standards.
Purpose and scope of the manual
This manual contains information on the operation of TOP unit
heaters. The information contained in these instructions can be
changed without prior notification.
2.2 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 sus-
pended substances and reactive substances.
Water quality
Ph
*1
8-9
Conductivity
*1
µS/cm
< 700
Oxygen content (O
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 (NO
2
-
)
mg/l
< 50
Nitrite ions (NO
3
-
)
mg/l
< 50
Limits of operation
Min. water temperature
°C
5
Min./Max. air intake temperature
°C
-20 bis +40
Min./Max. air humidity
%
15-75
Max. operating pressure
bar
see nameplate of the unit heater
Max. water temperature
°C
see nameplate of the unit heater
Min./Max. glycol percentage
%
25-50
Содержание Lufterhitzer TOP Series
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