CALEFFI 161010 Manuel page 37

Factory Area
setting
All relays Auto Auto, Off
Man 1 Auto On, Auto, Off
Man 2.3 Auto Mixer Close,
Auto, Mixer
Open, Off
Man 4 Auto On, Auto, Off
Back
System 3 (Heating with set point regulation or with heat exchange efficiency
control – Cooling with set point regulation - 0–10 V mixing valves with 24 V
actuator)
0–10 V
The controller monitors the room thermostat signal (RT). If the room ther-
mostat requests energy, the pump (R1) and R4 are turned on to request
heating. The temperature measured by probe S2 is monitored. The mixing
valve is regulated to ensure that S2 reaches and maintains the set tem-
perature T Set.
If the TFcalculated option (return temperature control S3, factory setting
= Yes) is active, the regulator calculates the nominal flow temperature
needed to keep the system at the correct temperature. For this reason,
the return temperature (S3) is monitored. The calculated nominal flow
temperature is displayed as TFset.
The controller is protected by a non-adjustable safety shut-down. The
Meaning
Select operating mode of all relays
Relay 1 in manual mode
Relay 2.3 in manual mode
Relay 4 in manual mode
S2
Flow
R1
S3 (optional)
Return
mixing valve is closed if the temperature measured by S2 reaches or ex-
ceeds 90 °C.
The warning symbol appears on the display and the Lightwheel
es yellow. R1 and R4 are turned off if the temperature measured by S2
reaches or exceeds 95 °C. The Lightwheel
If the TMax option is activated, a lower value can be entered for the safety
shut-down. The symbol appears on the display and the Lightwheel
flashes yellow if the S2 temperature exceeds (TMax - 5K). R1 and R4 are
turned off if the temperature TMax is exceeded by 5 K. The Lightwheel
flashes red.
If the Cooling option is active, the mixing valve is regulated to ensure
that S2 reaches and maintains the cooling temperature TCool. As an
option, contact S7 can be used for remote control of the heating / cooling
function.
Contact open = cooling
Contact closed = heating
If RH% control option is active, the regulator also monitors the humidity
sensor. If the humidity sensor is in an alarm state, the cooling function is
stopped and the warning symbol appears. The cooling function resumes
when the relative humidity returns within the set RH%.
Terminal assignment
S1 = Outside temperature probe
S2 = Heating circuit flow
S3 = Return probe (optional)
RT = Room thermostat
S5/TS10 = Dew point detector (optional)
S6 = Grundfos Direct Sensor™ RPS pressure switch (optional)
S7 = Remote contact for heating /cooling centralisation (optional)
R1 = Pump
R2 = Open mixing valve
R3 = Close mixing valve
R4 = Generator activation contact (voltage-free low-voltage relay).
If the generator has a contact with a voltage > 30 V, use the
auxiliary microswitch contacts of the mixer connected to the
free terminals on the 230 V -AX/AX side of the terminal board.
PWM A = not enabled
flash-
®
® flashes red.
®
®
11