Viessmann OpenTherm Installation And Service Instructions For Contractors

27
Rated voltage 230 V∼
Rated frequency 50 Hz
Rated current 4 A
Power consumption (without consumers) 1.5 W
Protection class I
IP rating IP 20 D to EN 60 529; ensure
through design/installation.
Permissible ambient temperature
■ During operation 0 to +40 °C
■ During storage and transport –20 to +65 °C
Rated relay output breaking capacity
■
Heating circuit pump sÖ
2 (1) A 230 V~
■ Mixer motor 0.2 (0.1) A 230 V~
Flow temperature sensor and temperature sen-
sor for low loss header
■ Sensor type NTC 10 kΩ, at 25 °C
■ IP rating IP 53 to EN 60 529; ensure
through design/installation.
■ Permissible ambient temperature during oper-
ation
0 to +120 °C
■ Permissible ambient temperature during stor-
age and transport
–20 to +70 °C
Temperature sensor curve
10
1
10 30 50 70 90 110
Temperature in °C
0.4
0.6
0.8
2
4
6
8
20
Resistance in kΩ
Specification
Specification
5837721
Service

Viessmann OpenTherm Specifications

General

Brand	Viessmann
Model	OpenTherm
Category	Temperature Controller
Language	English