Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual page 32

Appendix
Code Parameter
D.018 Pump operating mode
D.019 Pump operating mode: 2-stage
pump
D.020 Max. DHW temperature target
value
D.022 DHW demand
D.023 Heating mode status
D.025 Ext. eBUS signal: Cylinder char-
ging
D.026 Auxiliary relay
D.027 Accessory relay 1
D.028 Accessory relay 2
D.029 Water circulation vol. actual value
32
Values or explanations
1 = Comfort (continuously operating pump)
Internal pump is switched on when the heating flow tem-
perature is not at Heating off and the heat requirement
is enabled via an external controller
3 = Eco (intermittently operating pump)
Internal pump is switched on every 25 minutes for 5
minutes once the overrun time has elapsed
Setting for two-stage pump operating mode
0: Burner mode stage 2, pump flow/overrun stage 1
1: Heating mode and pump flow/overrun stage 1, hot
water handling mode stage 2
2: Automatic heating mode, pump flow/overrun stage 1,
hot water handling mode stage 2
3: Always stage 2
4: Automatic heating mode, pump flow/overrun stage 1,
hot water handling mode stage 1
Adjustment range: 50-70 °C (actoSTOR 65 °C)
On, Off
Heating on, heating off (summer mode)
On, Off
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Legionella protection pump (not active)
10 = Solar valve (not active)
Switching of relay 1 on the VR 40 "2 in 7" multi-func-
tional module
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Legionella protection pump (not active)
10 = Solar valve (not active)
Switching of relay 2 on the VR 40 "2 in 7" multi-func-
tional module
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Legionella protection pump (not active)
10 = Solar valve (not active)
Actual value in m³/h
Installation and maintenance instructions ecoTEC pro 0020244995_02
Default Own setting
setting
3 = Eco
2
65 °C
Not ad-
justable
Not ad-
justable
Not ad-
justable
2 = External
pump
2 = External
pump
2 = External
pump
Not ad-
justable