Vaillant ecoTEC VU 656/4 Installation And Maintenance Instructions Manual page 32

7 Adapting the boiler to the heating system
Display Meaning
d. 0 Heating partial load
d. 1 Overrun time of internal pump for
heating mode
d. 2 Maximum blocking time heating at 20°C
flow temperature
d.14 Pump speed target value
d.17 Heating flow/return regulation
changeover
d.18 Specification of the pump operating
mode
d.20 Maximum setting for cylinder target
value
d.26 Additional relay control ecoTEC
d.27 Switch of relay 1 on the multifunction
module "2 in 7"
d.28 Switch of relay 2 on the multifunction
module "2 in 7"
d.50 Offset for minimum speed
d.51 Offset for maximum speed
d.71 Target value maximum heating flow
temperature
d.72 Pump overrun time after cylinder
charging
d.75 maximum charging time for hot water
cylinder without independent control
system
d.77 Limitation of cylinder charging output
in kW
d.78 Limitation of charging temperature
in °C
d.84 Maintenance indicator: Number of hours
until the next maintenance
d.93 DSN appliance variant setting
d.96 Factory setting
d.97 Activation of the 2
Table 7.1 Adjustable parameters, levels 1 and 2
32
Adjustable parameters
14 - 65 kW
2 - 60 min
2 - 60 min
Target value of internal pump in %:
0 = auto, 1 = 53, 2 = 60, 3 = 70, 4 = 85,
5 = 100
0 = flow, 1 = return
0 = overrun, 1 = run on,
2 = winter, 3 = intermittent
40 to 70 °C
1 = circulation pump
2 = ext. Pump
3 = charging pump
4 = vapour extraction hood
5 = ext. solenoid valve
6 = ext. error message
7 = not active
8 = remote control, eBUS (not yet supported)
9 = legionella pump (not active)
1 = circulation pump
2 = ext. Pump
3 = charging pump
4 = vapour extraction hood
5 = ext. solenoid valve
6 = ext. error message
7 = not active
8 = remote control, eBUS (not yet supported)
9 = legionella pump (not active)
1 = circulation pump
2 = ext. Pump
3 = charging pump
4 = vapour extraction hood
5 = ext. solenoid valve
6 = ext. error message
7 = not active
8 = remote control, eBUS (not yet supported)
9 = legionella pump (not active)
in rpm/10, adjustment range: 0 to 300
in rpm/10, adjustment range: -99 to 0
40 to 85 °C
0 - 600 s
20 - 90 min
such as heating partial load
55 - 85 °C
0 to 3000 h and "-"
(300 corresponds to 3000 h, "-" = deactivated)
Setting range: 0 to 99
1 = Resetting adjustable parameters to factory
setting
nd
diagnosis level Code: 17 for level 2
Installation and maintenance instructions ecoTEC 0020029173_01
Factory Boiler-specific
setting setting
46 kW
5 min
20 min
5 (100)
0 do not adjust
3
65 °C
2
1
2
30
-45
75 °C
80 s
45 min
65 kW
80 °C
„-"
47 =
VU 656/4