Vaillant ecoTEC VUW User Manual

Adapting the boiler to the heating installation
44 Installation and maintenance instructions ecoTEC 0020173113_01
11
Code Parameters Adjustable values
Factory
setting
Your own
setting
D.000 Heating partial load Adjustable heating partial load in kW
Auto: Boiler automatically adjusts max. partial load to cur-
rent system demand
Auto
D.001 Overrun time of internal pump for
heating mode
1 - 60 min 5 min
D.002 Max. burner anti-cycling time heating
at 20 °C flow temperature
2 - 60 min 20 min
D.003 Outlet temp. actual value in °C Not adjusta-
ble
D.004 Measured value of hot water sensor Not relevant Not adjusta-
ble
D.005 Flow temperature target value (or
return target value)
In °C, max. of the value set in d.71, limited by an eBUS con-
troller if connected)
Not adjusta-
ble
D.006 Hot water temperature target value
(VUW boilers only)
35 to 65 °C Not adjusta-
ble
D.007 Warm start temperature target value
(only with VUW boilers)
Cylinder temperature target value
(only with VU boilers)
40 to 65 °C
15 °C frost protection, then 40 to 70 °C;
(max. temperature can be adjusted under D.020)
Not adjusta-
ble
D.008 Room thermostat at terminal RT Room thermostat open (no heat requirement)
Room thermostat closed (heat requirement)
Not adjusta-
ble
D.009 Target value from external eBus con-
troller
in °C Not adjusta-
ble
D.010 Status of internal pump 1 = on, 0 = off Not adjusta-
ble
D.011 Status of external heating pump 1 to 100 = on, 0 = off Not adjusta-
ble
D.012 Status of cylinder charge pump Not relevant Not adjusta-
ble
D.013 Status of hot water circulation pump Not relevant Not adjusta-
ble
D.014 Target pump speed (high-efficiency
pump)
Not relevant Not adjusta-
ble
D.015 Actual pump speed (high-efficiency
pump)
Not relevant Not adjusta-
ble
D.016 Room thermostat 24 V DC open/
closed
0 = Room thermostat open (no heating mode)
1 = Room thermostat closed (heating mode)
Not adjusta-
ble
D.017 Heating flow/return regulation
changeover
0 = Flow, 1 = Return 0
D.018 Pump operating mode setting 1 = Comfort (continuously operating pump)
3 = Eco (intermittently operating pump)
3
D.019 Operating mode of 2-stage pump Not relevant Not adjusta-
ble
D.020 Max. setting for cylinder target value Not relevant Not adjusta-
ble
D.022 Hot water demand via C1/C2, internal
hot water control system
Not relevant Not adjusta-
ble
D.023 Summer/winter operating mode (heat-
ing on/off)
1 = Heating on, 0 = Heating off (summer mode) Not adjusta-
ble
D.025 Hot water generation enabled by eBUS
controller
1 = Yes, 0 = No Not adjusta-
ble
D.026 Auxiliary relay control Not relevant Not adjusta-
ble
11.1 Diagnosis codes

Vaillant ecoTEC VUW Specifications

General

Mounting	Wall-mounted
Type	Combi Boiler
Fuel Type	Natural Gas
DHW Flow Rate	Up to 14.3 l/min (depending on model)
Dimensions (H x W x D)	720 mm x 440 mm x 338 mm (varies by model)
Heating Capacity	Up to 35 kW (depending on model)
Warranty	2-5 years (depending on installer and registration)
Heating Output	35kW (depending on model)