A.O. Smith dre-52 - Water Composition; Working Clearances

8.2.3 Water composition
The water must comply with the regulations for drinking water for human consumption.
Water composition
Water hardness > 1.00 mmol/l:
- German hardness > 5.6° dH
-
French hardness > 10.0° fH
- English hardness > 7.0° e
- CaCO
3
> 100 ppm
Conductivity > 125 µS/cm
Acidity (pH value) 7.0 - 9.5
Note
Water qualit
y may adversely affect the efficiency, performance and lifetime of the water
heater, refer to
Warranty (on page 3). If water specifications differ from the specifications
in the table a water treatment specialist should be consulted.
8.2.4 Working clearances
Make sure that there is sufficient clearance to access the water heater:
• 100 cm in front of the water heater (AA).
• 50 cm at the left and right side of the water heater (BB).
• 100 cm at the top of the water heater.
Fig. Working clearances
n
36 Installation, Maintenance and Service part
EN