M0Q940G14-03 WSAT-XIN 21-171 13
5.5 Operation sequence
Close all vent valves in the high points of the unit hydraulic circuit
Close all drain valves in the low points of the unit hydraulic circuit:
•
Heat exchangers
•
Pumps
•
collectors
•
storage tank
•
free-cooling coil
1. Carefully wash the system with clean water: ll and drain the system several times.
2. Apply additives to prevent corrosion, fouling, formation of mud and algae.
3. Fill the plant
4. Execute leakage test.
5. Isolate the pipes to avoid heat dispersions and formation of condensate.
6. Leave various point of service free (wells, vent-holes etc).
Neglecting the washing will lead to several lter cleaning interventions and at worst cases can cause damages to the exchangers and the
other parts.
5.6 Recommended connection
The installer must dene:
•
component type
•
position in system
Water input output position:
15 Dimensional drawingsp.57
See adhesive labels on the unit
1 antivibration joints 8 shut-o valve
2 piping support 9 lling valve
3 exchanger chemical cleaning bypass 10 Internal storage tank
4 shut-o valve 11 Flow Switch
5 expansion vessel 12 shut-o valve
6 pressure gauge 13 lter
7 thermometer
5.7 Water lter
It must be installed immediately in the water input of the unit, in a position that is easily accessible for cleaning.
The lter never should be removed, this operation invalidates the guaranty.
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