8. USER SECTION: OPERATION
8.4 Temperature setting of water Set and climate
Curves.
Recipes 10 and 13
Instructions on the Febos-Crono manual
Recipes 1 and 2
Heating
The temperature set of the water being heated can be set to Parameter
C541 (default 40°C).
This value is then adjusted according to the external temperature (L163)
through the winter climate correction Curve:
- C521: external temperature at which the maximum correction of
C523 is made (default 12°C).
- C522: external temperature at which no correction is made
(default 2°C).
- C523: maximum correction (default 6°C).
water temp correction
C523
t set
0
C522
L163
The target water temperature can be viewed in Parameter L561, and is
calculated as follows:
L561 = C541 - Corr.
In cooling
The cooling water temperature set can be set to Parameter C542 (default
16°C).
This value is then corrected as a function of the external temperature
(L163) through the summer climate correction Curve:
-C531: external temperature at which no
correction is made (default 26°C).
-C532: external temperature at which the maximum correction
of C533 is made (default 20°C).
- C533: maximum correction (default 3°C).
water temp correction
C533
t set
0
C532
L163
The target water temperature can be viewed in Parameter L561 and is
calculated as follows: L561 = C542 + Corr.
NOTE: external temperature (L163) of climate curve is read daily at 6:00
am.
128
C521
Ext temp.
C531
Ext temp.
8.5 Consent and Set Point 2 setting
Recipes 1,2, 10 and 13
The input 105 (H+ / H-) of the TERMINAL BLOCK PCB is configured as Set
Point 2Consent.
To activate the heat pump connect the ambient thermostat to the inlet
101
Contact closed
Set Point 2 consent for Fancoil
Consenso Set Point 2 per Fancoil
Consent to Set Point 2 is active and the target water temperature
changes to the following values, suitable for Fancoil operation:
- C551: Set Point 2 in heating (default 45°C).
- C552: Set Point 2 in cooling (default 7°C).
If the climate curve is active for Set Point 2 (C405=On), the above values
are then corrected as a function of the external temperature (L163) through
the climate correction curves illustrated in Paragraph 8.4.
NOTE: The reference external temperature for the climatic curves is con-
stantly updated.
On the SMART-MT, icon no. 7 lights up.
8.6 Activation of the circulator inside the PdC (heat pump)
All recipes
The circulator inside the PdC is activated independently whenever the ac-
tivation of the compressor is required or to carry out the safety activities
of the Heat Pump (antifreeze function, high/low temperature alarm of the
radiant system).
Furthermore, with consent from the Room Thermostat active, but the com-
pressor off due to the target water temperature satisfied, the following
cases occur:
- Set Point 2 consent active
Pump always active
- Par. C408 = 0
- Par. C408 = 1
The circulator performs tests lasting 3 min,
at regular intervals of 15 min.
- Par. C408 = 2
The circulator performs tests lasting 3 minutes,
automatically calculating the waiting interval between a minimum
of 30 minutes and a maximum of 3 hours.
On the SMART-MT, icon no. 1 lights up.
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