12 WSA-XEE
122-402
M02S40N16-00
4.5 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: fill 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 filter cleaning interventions and at worst cases can cause damages to the exchangers and the
other parts.
4.6 Recommended
connection
The installer must define:
•
component type
•
position in system
1
antivibration joints
10
pressure gauge
2
piping support
11
thermometer
3
exchanger chemical cleaning bypass
12
shut-off valve
4
shut-off valve
13
filter
5
vent
14
filling valve
6
Pump / circulating pump
15
shut-off valve
7
expansion vessel
16
Internal storage tank
8
safety valve
17
Cleaning system bypass
9
Flow Switch
4.7 Hydraulic
connections
•
take away the supplied connection union by acting on the connection joint
•
weld the union to the installation pipe
•
perform the connection between the installation pipe and the evaporator, using the joint
Retirer le joint de connexion avant de souder le tuyau de l’installation.
The rubber gasket might be irreparably damaged.
4.8 Water
filter
Use filter with mesh pitch of 1,6 mm
It must be installed immediately in the water input of the unit, in a position that is easily accessible for cleaning.
The filter never should be removed, this operation invalidates the guaranty.
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