CALEFFI 161010 Посібник - Сторінка 9
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Друкувати сторінкуSystem 2 (weather-compensated heating – flow temperature controlled cooling)
S1
R2 = open
R3 = closed
The controller monitors the room thermostat (TA).
If the room thermostat demands heat, the pump (R1) starts and R4 is energised for
the heating demand. The temperature at S2 is monitored.
The controller calculates the set flow temperature by means of the outdoor tem-
perature (S1) and the selected heating curve. The mixer is controlled so that the
calculated set flow temperature is reached and maintained at S2.
The controller is equipped with a non-adjustable safety shutdown function. If the
temperature at S2 reaches or exceeds 90 °C, the mixer closes. The warning symbol
⚠ appears on the screen and the Lightwheel
at S2 reaches or exceeds 95 °C,R1 and R4 switch off. The Lightwheel
If theTMax option is activated, the value for the safety shutown function can be
reduced. If the temperature at S2 exceeds TMax by less than 5K, the warning symbol
⚠ appears on the screen and the Lightwheel
exceeds TMax by more than 5 K, R1 and R4 switch off. The Lightwheel
If the Cooling option is activated, the mixer is controlled so that the adjusted
cooling temperature TCool is reached and maintained at S2. The S7 contact can be
used for connecting a switch for remotely controlling the heating / cooling mode.
Contact open = cooling mode
Contact closed = heating mode
S2
Flow
R1
Return
®
flashes yellow. If the temperature
flashes red.
®
flashes yellow. If the temperature at S2
®
flashes red.
®
If the Condensation option is activated, the controller monitors a dew point
switch. If the dew point switch triggers an alarm, cooling stops and the warning
symbol is indicated.
Terminal allocation
S1
= outdoor temperature sensor
S2
= heating circuit flow
S3/RTA12 = return sensor or remote control (optional)
TA
= room thermostat
S5/TS10 = dew point switch (optional)
S6
= RPS Grundfos Direct Sensor™ pressure sensor (optional)
S7
= contact for remotely controlling the heating / cooling mode (optional)
R1
= pump
R2
= mixer open
R3
= mixer closed
R4
= demand contact of the heat generator (potential-free extra-low volt-
age relay). If the voltage at the contact used is higher than 30 V, use the
auxiliary terminals at the 230 V side for the mixer.
PWM 1
= R1 speed signal, profile selectable
Adjustment and balance values menu system 2
Factory
Range
setting
System
1
1, 2
Curve
0.8
0.3 ... 3.0
TMin
Yes
Yes, No
TMin
25 °C
15 °C ... 40 °C
TMax
Yes
Yes, No
TMax
50 °C
30 °C ... 90 °C
Remote control No
Yes, No
Cooling
No
Yes, No
TCool
16 °C
5 °C ... 25 °C
Condensat.
Yes
Yes, No
Chiller on
No
Yes, No
Pressure
No
Yes, No
PMin
0.6 bar
0.2 ... 10.0 bar
tMixer
75 s
30 ... 240 s
Description
System selection
Heating curve
Minimum temperature heating circuit option
Minimum temperature heating circuit
Maximum temperature heating circuit option
Maximum temperature heating circuit
Remote control option
Cooling option
Cooling temperature
Dew point switch (DPS) option
Cooling demand on option
Low pressure monitoring option
Switch-on threshold low pressure monitoring
Mixer runtime
9