Technical information

101
2. Adjustment by water temperature at the outlet of the heat
exchanger.
Thermostatic control is based on the temperature value
detected by probe B6.
Based on the set point value (STPM) and the control base
(RBM), it defines a neutral temperature zone (NZ).
- The temperature values comprised between the set point
and the set point plus the band (STPM ≤ Temperature
≤STPM + RBM) do not cause the on/off function of the
compressors.
- Temperature values above the set point plus the band
(Temperature > STPM + RBM) cause compressor opera-
tion.
- Temperature values below the set point (Temperature <
STPM) turn the compressors off.
The on/off process of the compressors is controlled by a
variable delay time.
Based on the time differential calculated as the delay, and
in accordance with the temperature detected by probe B6,
this control will modulate the on/off process of the compres-
sors.
If set to 0, minimum delay time at increase/decrease of the
power demand, this function is disabled.
There is a different temperature differential for the cool/heat
cycles (below or above...), as of which there is an uncondi-
tional off of the devices installed to avoid excessive cool/heat
cycles.







 
 



STPM Set point
RBM Control band
NZ Neutral zone
EOWT Water temperature at exchanger outlet
DonZ Compressor ON zone
DoftZ Compressor OFF zone
TVD Differential of phase input/output time variations
HTON Stage activation maximum time delay
LTON Stage activation minimum time delay
HT OFF Stage deactivation maximum time delay
LT OFF Stage deactivation minimum time delay
t Time