Vaillant VWZ AI User Manual

Appendix
0020291573_00 Heat pump control interface module Installation instructions 35
Temperature (°C) Resistance (ohms)
90 918
95 788
100 680
105 588
110 510
H Characteristic values for the VRC DCF outdoor temperature sensor
Temperature (°C) Resistance (ohms)
-25 2167
-20 2067
-15 1976
-10 1862
-5 1745
0 1619
5 1494
10 1387
15 1246
20 1128
25 1020
30 920
35 831
40 740
I Technical data
VWZ AI VWL X/2 A
Operating voltage U
max
230 V
Power consumption
≤ 2 V⋅A
Contact loading of the output re-
lay
≤ 2 A
Total current
≤ 4 A
Sensor operating voltage
3.3 V
Cross-section of eBUS line (extra
low voltage)
≥ 0.75 mm²
Cross-section of sensor line (extra
low voltage)
≥ 0.75 mm²
Cross-section of 230 V connection
cable (pump or mixer connection
cable)
≥ 1.5 mm²
IP rating
IP 20
Protection class
II
Maximum environmental temperat-
ure
40 ℃
Height
174 mm
Width
272 mm
Depth
52 mm

Vaillant VWZ AI Specifications

General

Brand	Vaillant
Model	VWZ AI
Category	Control Unit
Language	English