Part 2: Overview of display values and settings
Expert
area
53
06 = Pump HS2
When using the controller to control two heat generators
the relay may be used to control the pump for HS 2.
(Relay switches with burner relay 2; run-down =5 min)
20 = Temperature-controlled circulation pump
T-CIRCL = Return flow temperature of circulation line
ON: T-CIRCL < T-MF1 SETP
OFF: T-CIRCL > [T-MF1 SETP + MF 1 HYST]
The circulation pump is switched on when the return flow
temperature drops below the temperature setting limit
(T-MF1 SETP). The pump is switched off again when the
return flow temperature exceeds the set limit temperature
by the Hysteresis (MF 1 HYST).
The set circulation program and the "Circulation with hot
water" setting have an overriding function
=> Switching on only takes place during enable periods.
21 = Pulsed circulation pump
ON: With short circuit at assigned sensor input
OFF: After 5 minutes
If a short-cut occurs at the multifunction sensor input the
circulation pump is switched on for 5 minutes. Switching on
takes place on the edge (once only).
The set circulation program and the "Circulation with hot
water" setting have an overriding function
=> Switching on only takes place during enable periods.
22 = Solid fuel boiler integration
(e.g. in connection with 2-stage HS)
T-MF1 or 1-4 = Temperature of the solid fuel boiler
T-BUFFER B = Temperature of buffer storage in the infeed
area [F1]
ON: T-MF1 > [T-BUFFER B (F1) +MF 1 HYST + 5K]
OFF: T-MF1 < [T-BUFFER B (F1) + MF 1 HYST]
Start-up relief:
ON: T-MF1 > T-MF1 SETP
OFF: T-MF1 < [T-MF1 SETP – 5K]
The pump is switched on when the temperature of the
solid fuel boiler exceeds the temperature of the buffer
storage in the infeed area [T-BUFFER B (F1)] by the
hysteresis [MF 1 HYST+ 5K]. Switching off occurs when
the temperature drops 5K below the switch-on
temperature.
Switching off also occurs when the temperature of the solid
fuel boiler drops below the set limit temperature [T-MF1
SETP] by 5K. The pump is enabled again when the
temperature of the solid fuel boiler exceeds the set limit
temperature [T-MF1 SETP].
Blocking HS1:
ON: T-MF1 > HS set tempe 5K and solid-fuel
boiler pump = ON
OFF: T-MF1 <= HS set temperature or solid-fuel boiler
pump = OFF
