Room Temperature Sensor; Flue Gas Temperature Sensor; Radio Clock Receiver - Viessmann VITOPLEX 200 Type SX2A Technical Manual

Control units
(cont.)

Room temperature sensor

Part no. 7408 012
Separate room temperature sensor as supplement to the Vitotrol 200
and 300; to be used if the Vitotrol 200 or 300 cannot be installed inside
the main living room or in a suitable position where the unit can capture
and adjust the temperature.
Installation in the main living room on an internal wall opposite radia-
tors. Never install inside shelving units, in recesses, or immediately by
a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.).
Connect the room temperature sensor to the Vitotrol 200 or 300.
Connection:
■ 2-core lead with a cross-section of 1.5 mm
■ Lead length from the remote control up to 30 m
■ Never route this lead immediately next to 230/400 V cables
8 0
□
11

Flue gas temperature sensor

Part no. 7450 630
For scanning the flue gas temperature, flue gas temperature monitor-
ing and maintenance indication, if the set temperature has been excee-
ded.
With threaded cone.
Installation on the flue pipe. The distance from the boiler must be
approx. 1.5 times the flue pipe diameter, measured from the boiler
edge (back) to the chimney stack.
■ Condensing boilers with Viessmann balanced flue system:
Order the balanced flue pipe with connector for the flue gas temper-
ature sensor separately.
■ For condensing boilers with on-site flue pipe:
The aperture required for the flue pipe installation must be designed
and approved by the supplier. Install the flue gas temperature sensor
into a stainless steel sensor well (on-site provision).

Radio clock receiver

Part no. 7450 563
For receiving the DCF 77 time signal (location: Mainflingen near Frank-
furt/Main).
Radio controlled setting of time and date.
Install on an outside wall, facing the transmitter. The reception may be
reduced by metallic elements in the building structure, e.g. steel rein-
forced concrete, neighbouring buildings and sources of electro-mag-
netic interference, e.g. HV and public transport lines.
Connection:
VIESMANN
66
Specification
Protection class
IP rating
Sensor type
Permissible ambient temperature
– during operation
– during storage and transport
2 (copper)
Specification
Lead length
IP rating
Sensor type
Permissible ambient temperature
– during operation
– during storage and transport
■ 2-core lead, length up to 35 m with a cross-section of 1.5 mm
per)
■ Never route this lead immediately next to 230/400 V cables.
III
IP 30 to EN 60529;
ensure through appropri-
ate design/installation
Viessmann Ni500
0 to +40 °C
−20 to +65 °C
3.8 m, fully wired
IP 60 to EN 60529; ensure
through appropriate design
and installation
Viessmann Pt500
0 to +600 °C
-20 to +70 °C
2 (cop-
OIL/GAS BOILERS