Selecting Water Filters - Rational CombiMaster Plus series Installation Manual

7 Water connection
Only USA (not valid for CAN)
7.4 Selecting water filters
A) Fine filters
B) Active carbon filters
C) Reverse osmosis system
D) Water softening:
SCC:
CMP:
46
regarding water and sewer connections, espe-
cially those regarding installation of water
intake points.
In most cases, water connections do not require
additional filters or water treatment.
Filtration and/or water treatment (A, B, C, D)
may be necessary if water conditions are critical.
Contact the local water supply company to
inquire about water chloride levels (Cl
levels (Cl ) and hardness.
2
We recommend fine filters with fineness of 5 -
15µm for filtering water contaminated with sand,
iron particles or suspended matter.
If water contains high levels of chlorine Cl
0.2mg/l, corresponds to 0.2ppm; information
provided by water supply company), (typically
municiple supplied water).
Due to corrosion risks, a reverse osmosis system
must be used if and only if chloride (Cl
centrations are above 80mg/l (corresponds to
80ppm, information provided by water supply
company).
Note: Ensure that the minimum conductivity
value of 50µS/cm (Micro Siemens) is being
maintained.
When used properly, these units remove lime
from water completely independently, so upscale
water softening is not necessary.
Recommended for treating water if severe calci-
fication occurs (without chloride contamination).
Systems: Weak acid decarbonization (H
exchange).
Sodium ion exchangers (as are commonly found
in dishwashers) are not recommended.
Phosphate metering is also not recommended
due to its negative effects on the water system.
), chlorine
–
(over
2
) con-
–
ion
+