28 WSAT-XIN 21-171 M0Q940G14-03
7.16 Antifreeze function with circulating pump
Parameter modication Keys Esc + Set Menu dS Menu PI
PI51 switch-on setpoint of the circulating pump for antifreeze (5°C)
PI52 hysteresis (2°C)
The function is enabled by default
To deactivate the funcion: PI50 = 0.
pump
Off
Pi52
ON
Pi51
t H
2
O inlet
7.17 Start-up report
Identifying the operating objective conditions is useful to control the unit over time.
With unit at steady state, i.e. in stable and close-to-work conditions, identify the following data:
•
total voltages and absorptions with unit at full load
•
absorptions of the dierent electric loads (compressors, fans, pumps etc)
•
temperatures and ows of the dierent uids (water, air) both in input and in output from the unit
•
temperature and pressures on the characteristic points of the refrigerating circuit (compressor discharge, liquid, intake)
The measurements must be kept and made available during maintenance interventions.
7.18 2014/68/UE PED directive
DIRECTIVE 2014/68/UE PED gives instructions for installers, users and maintenance technicians as well.
Refer to local regulations; briey and as an example, see the following:
Compulsory verication of the rst installation:
•
only for units assembled on the installer’s building site (for ex. Condensing circuit + direct expansion unit)
Certication of setting in service:
•
for all the units
Periodical verications:
•
to be executed with the frequency indicated by the Manufacturer (see the “maintenance inspections” paragraph)
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