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6.2.14.
Venting
If your chiller contains a horizontal pump, the pump does not have to be vented. Before switching on the
pump the vent plug must be opened at the automatic vent and left open while the unit is running until all air
has completely escaped from the pump body (see
Figure 15
).
We recommend also installing an automatic venting valve at the highest point in the cold water circuit.
Figure 15: Automatic vent valve
Check the bleeder valve regularly and clean it if necessary.
6.2.15.
Electrical installation
The chiller is connected electrically to its main supply terminal in the control cabinet.
(see
Figure 16 Main
supply
).
A corresponding circuit diagram is included with the unit.
ATTENTION! Please also note and follow the local installation regulations and provisions,
especially the ordinance on handling water pollutant substances and BGR500 Chapter
2.35.
ATTENTION! The electrical installation, testing and commissioning may only be carried
out by qualified personnel. Note and follow the local regulations.
ATTENTION! Do not switch on the chiller until the hydraulic installation is completed and
the machine has been filled as specified in Chapter 6.2.11. Otherwise the machine
could be damaged.
ATTENTION: The mains voltage must comply with the quality characteristics of EN 50160 and the defined
standard voltages of IEC 60038.
The electrical connection on the building side is the responsibility of the operator.
The operator must ensure that the limit values permitted in DIN EN 60204-1 (occurrence of a leakage current
to earth at any mains connection of more than 10 mA AC or DC) are complied with, and that measures are
taken to reduce them to non-critical values if they are exceeded.
Vent plug
automatic vent
