WDT Operating instructions GRANUDOS 10 (V61-08/05) page 8 of 20
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2. Installation
2.1
Tubing – please see installation diagram page
For satisfactory water flow through the dissolving system the supply pressure must be at least 0,2 bars.
At low service pressure the counter pressure must be low, too. Counter pressure and pressure loss in
the dosing line should be as low as possible. At works the GRANUDOS has been tested at following
pressure conditions:
Service pressure
1,2 bars
Counter pressure
1,2 bars
0,6 bars
0,8 bars
0,3 bars
0,5 bars
Within these ranges the GRANUDOS should function well. In addition please pay attention to the
following:
1.
Tapping point for supply water to be between filter and heat exchanger, dosing point after heat
exchanger.
2.
Ensure that the tapping/dosing points are free flowing and not blocked by scale or corrosion.
3.
Pipe runs to be kept as short as possible. PVC-tubing 25 mm or hose 1´´. For longer distances
or poor pressure conditions use bigger tubing.
4.
Use high quality PVC ball valves.
