HyCassette-Geko
Safety and User Instructions
PR-2015-0159-GB • Subject to modifications • R1-11/2015
11
The following accident prevention regulations apply (VBG1, BGV A2 (previously:
VBG4), VBG7w, VBG9a) and generally recognized codes for machinery and prin-
ciples of engineering, particularly DIN VDE 0100, DIN VDE 0105.
1.4
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 man-
ual may only be performed by qualified personnel:
–
Shipping and storage
–
Assembly
–
Hydraulic connection
–
Electrical connection
–
Commissioning
–
Maintenance
1.5
Proper use
Fan coil units of the HyCassette-Geko series are exclusively designed for heat-
ing, filtering and cooling purposes. As medium water or water/glycol solution
(max. 50 %) may be used. The following limit values apply to the medium for oper-
ating Cu/Al heat exchangers:
DANGER DUE TO OVERHEAD LOADS!
Wear a helmet and safety boots to prevent injury from falling components,
especially when fitting the unit to the ceiling. Ceiling installations should always
be performed by two persons.
RISK OF PERSONAL INJURY!
Always wear protective gloves when shipping or installing the unit to prevent
injury caused by sharp edges.
Parameter
Unit
Value
pH value (at 20 °C)
7.5 - 9
Conductivity (at 20 °C)
μ
S/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 the medium in closed heating and cooling circuits