Pfannenberg Rack Serie Libro De Instrucciones página 9

Secondary circuit
„application side"
Connection 3/4" (PWW 9000-12000)
Connection 1" (PWW 18000-24000
Primary circuit
„facility side"
Connection 3/4" (PWW 9000-12000)
Connection 1" (PWW 18000-24000)
CAUTION:
Please Note
:
•
Electrical installation must respect all valid safety standards.
•
It's advisable to install a magnetic-thermal cutout upstream power cable.
•
Make sure the system is adequately earthed.
•
Check that the voltage and frequency of the power supply correspond to the specifications on the unit's data plate and/or
enclosed electrical plan.
•
Pfannenberg Chiller units are designed for TN Earthing Systems. Use the Maximum fault loop Chiller Impedence value
for sizing purposes on site (refer to Zpe value specified within Electrical Diagram attached)
•
For Rack series provide the switch-disconnector in accordance with IEC 60947-1, IEC 60947-2, IEC 60947-3.
)
Picture 3.b – Hydraulic connection plates (PWW )
In case of unit with tank, please fill the tank before connecting Hydraulic tubes.
Example of Electric connections
The unit must be electrically connected by the customer
English
IN
OUT
IN
OUT
Picture 4 – Electric
connection plate
9