Indicator Light; Systems - Caleffi 161010 Installationsanleitung Für Denqualifizierten Techniker

Note
To return to the settings menu, you must enter the user code again.

3.3 Indicator light

The controller has a multicoloured indicator light at the centre of the Lightwheel
The indicator light shows the following operating states:
Colour Fixed light
All ok
Green
Yellow
Red
4

Systems

System 1 (Heating with set point regulation or with heat exchange efficiency
control – Cooling with set point regulation - 3-point mixing valves with 230 V
actuator)
R2 = open
R3 = closing
flashing
Manual mode: at least one relay in auto-
matic mode (Off, Max or Min)
System pressure below the minimum
value PMin, TMax exceeded by 5 K
Probe error, safety shut-down activated,
TMax exceeded by at least 5 K
S2
Flow
R1
S3 (optional)
Return
The controller monitors the room thermostat signal (RT). If the room thermo-
stat 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 temperature 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 mixing
valve is closed if the temperature measured by S2 reaches or exceeds 90 °C.
The warning symbol appears on the display and the Lightwheel
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
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 sen-
sor. 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)
flashes red.
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appears on the display and the Lightwheel
flashes
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