Technische Alternative HZR 65, Operation And Installation Instructions Manual

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Program 82: Instead of burner requirement (program 80) A5 is a hot water tank feed
pump. Sensor T6 is no room sensor, but a tank sensor. Note: T6 must be set as standard
sensor ( Std ) (see selector switch position Mod
– Par ). In position “
Par
” the use of sensor
T6
must be set:
rAS

T6 is used as room sensor
Std

T6 is no room sensor, frost protection at T5 keeps active
Setting in menu mixer control parameter „
Mr
“:
Atr = outdoor temperature control or Fir =
fixed value control
A5 = T2 > min1 & T2 > T6 + diff2 & T6 < min2
Program 83: A5 is a hot water tank feed pump. Therefore the sensor T6 is situated in the
boiler. Note: T6 must be set as standard sensor ( Std ) (see selector switch position Mod
–
Par ).
Heating circuit pump A1 is enabled by buffer tank or boiler temperature.
A1 = T2 > min1 or T6 > min2 & (heating = active)
A5 = T6 > min2 & T6 > T3 + diff2
Program 84:
Enable of heating circuit pump A1 without observance of any energy source
temperature. A5 is a feed pump between T2 and T3 without maximum threshold.
A1 = (heating = active)
A2 = T1 > T3 + diff1 & T3 < max
A5 = T2 < min2 & (T2 > T3 + diff2)
A1 off A5 off
T2 < min1 T1 T2 < min1
diff1 diff2
A1 on A2 on A5 on
Switch-off cond. HPu T3 > max T6 > min2
A1 off A2 off A5 off