CLIVET CSRN-XHE2 Series, Manual

Page: 35 / 92

35
Demand limit
It allows to temporarily limit the electrical capacity absorbed by
the unit according to an ext. signal 0 - 10V.
Higher is the signal and lower the number of available
compressors, that is the electrical capacity absorbed.
Enable the function :
par 50 EnDemandLimit =
Set the set Demand Limit:
par 7 SetDL (%)
It allows to limit the electric power absorbed by the unit
(compressors or auxiliary elements).
The limitation can be:
fixed, value defined by parameter
variable, according to the external signal 0-10v
variable, according to the external signal 4-20mA
To enable the function:
par 50 EnDemandLimit =
0-10v see wiring diagram
4-20mA see wiring diagram
from parameter
If enabled by parameter set par 7 SetDL (%); the greater is the
value, the lower is electric power absorbed
If enabled by signal, the greater is the signal, the lower is the
absorbed electrical power.
For the connections see the wiring diagram
Low set-up outdoor temperature
Option indicated for very cold climates, where the outdoor
temperature can be between –10°C and –30°C.

The accessory is also active with unit OFF; the unit must
remain powered.
Start-up report
dentifying 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 different electric loads (compressors, fans,
pumps etc)

temperatures and flows of the different fluids (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.