Safety and User Instructions HyPower-Geko
8 FläktGroup DC-2014-0022-GB 2018-05/R5 • Subject to modifications
The following accident prevention regulations apply (VBG1, BGV A2 (previously:
VBG4), VBG7w, VBG9a) and generally recognized codes for machinery and principles
of engineering, particularly DIN VDE 0100, DIN VDE 0105.
1.5 Personnel selection and qualification
The unit may be installed, operated and maintained only by qualified, specially trained
and authorized staff. The following tasks described in the operation manual and the
service manual may only be performed by qualified personnel:
– Shipping and storage
– Assembly
– Hydraulic connection
– Electrical connection
– Commissioning
– Maintenance
1.6 Proper use
Fan coil units of the HyPower Geko series are exclusively designed for heating, filtering
and cooling purposes. Water or water/glycol solution (max. 50%) may be used as the
medium.
The following limit values apply to medium for operating Cu/Al heat exchangers:
Risk of personal injury!
Always wear protective gloves when shipping or installing the unit to prevent injury
caused by sharp edges.
Risk of damage to the unit!
During the installation it must be ensured that no condensation or splash water pen-
etrates into electric units, also in the event of unit/installation damage.
Parameter Unit Value
pH value (at 20 °C) 7.5 - 9
Conductivity (at 20 °C) μS/cm < 700
Oxygen content O
2
mg/l < 0.1
Total hardness °dH 1 - 15
Dissolved sulfur S not detectable
Sodium Na
+
mg/l < 100
Iron Fe
2+
, Fe
3+
mg/l < 0.1
Manganese Mn
2+
mg/l < 0.05
Ammonium content NH
4
+
mg/l < 0.1
Chloride Cl
-
mg/l < 100
Sulphate SO
4
2-
mg/l < 50
Nitrite NO
2
-
mg/l < 50
Nitrate NO
3
-
mg/l < 50
Tab. 1-1: Limit values for medium used in closed heating and cooling circuits
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