Opentherm Modulating Room Temperature Controller; Contact Temperature Limiter; Outside Temperature Sensor; Part No. Z014134 - Viessmann VITODENS 050-W Technical Manual

Control unit
(cont.)
Permissible ambient temperature
– Operation
– Storage and transport
Setting range
– Comfort temperature
– Setback temperature
– Frost protection temperature
Power reserve during battery
change

OpenTherm modulating room temperature controller

Part no. Z014134

■ With seven-day program
■ With connecting lead
■ Operation without batteries (power supplied by the boiler)

Contact temperature limiter

Part no. ZK04647

Can be used as a maximum temperature limiter for underfloor heat-
ing systems (only in conjunction with metal pipes).
The temperature limiter is fitted to the heating flow. If the flow tem-
perature is too high, the temperature limiter switches off the heat
generator.
0
7 2 1 3

Outside temperature sensor

Part no. ZK04306

Installation location:
■ North or north-west facing wall of the building
■ 2 to 2.5 m above the ground; for multi storey buildings in the upper
half of the second floor
Connection:
■ 2-core lead, length up to 35 m with a cross-section of 1.5 mm
(copper)
■ Never route this cable immediately next to 230/400 V cables.
6 6
4 1
VITODENS
0 to +40 °C
–25 to +65 °C
10 to 40 °C
10 to 40 °C
5 °C
3 min
2
Wireless receiver
■ For installation in the control unit support
■ With power cable and connector for connection to the control unit
Specification
Lead length 1.5 m
Setting range 30 to 80 °C
Switching differential 6.5 K ±2.5 K
Breaking capacity 6(1.5) A, 250 V~
Setting scale Inside the enclosure
Protection rating to IP 41
EN 60529
Specification
IP rating IP 43 to EN 60529; ensure through de-
sign/installation.
Sensor type Viessmann NTC 10 kΩ at 25 °C
Permissible ambient tem-
perature during operation,
storage and transport –40 to +70 °C
6
VIESMANN
57