Viessmann Vitocrossal 200 CM2 Series Technical Manual Download Page 58

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■ Plug connection chamber:

– Connection of external equipment via system plug
– Connection of three-phase consumers via additional contactors

■ Temperature controller/high limit safety cut-out, integrated into the

burner control unit:
EN 14597 and EN 60730-2-5

Programming unit

■ Easy operation through high contrast display with large fonts.
■ User prompts with pictographs.
■ Operating keys:

– Navigation
– Confirmation
– Settings/menu

■ Settings:

– Boiler water temperature
– Codes
– Actuator tests
– Test mode

Only in conjunction with single boiler systems:
– DHW temperature
– Operating program

■ Indicators:

– Boiler water temperature
– DHW temperature (only in single boiler systems)
– Operating data
– Diagnostic details
– Maintenance and fault messages

Functions

■ Control of the boiler water temperature (= system flow temperature)

to the specified value.

■ Pump anti-seizing protection.
■ Integral diagnostic system.
■ Maintenance display.
■ External fault message facility can be connected.
■ Electronic maximum limiter of the boiler water temperature, integra-

ted into the burner control unit.

■ Flue gas temperature monitoring in conjunction with flue gas tem-

perature sensor, integrated into the burner control unit.

Single boiler systems:
■ Adaptive cylinder temperature controller with priority control (heating

circuit pump off).

■ Auxiliary function for DHW heating (short term heating to a higher

temperature).

■ Control of solar DHW heating and central heating backup in con-

junction with solar control module, type SM1.

■ Control of a cylinder loading system with mixer assembly.
■ Functions via external contacts:

– External demand with set minimum boiler water temperature
– External burner blocking

■ Additional functions by means of the EA1 extension (accessories):

– External demand through default set boiler water temperature via

0 to 10 V input

– 3 digital inputs for the following functions:

External blocking
External blocking with fault message input
Fault message input

■ Additional functions via AM1 extension (accessories, part no. 7452

092):
Control of circulation pump for neutralising system if output

sÖ

already assigned at the control unit.

Multi boiler systems with Vitotronic 300-K cascade control unit:
■ Functions via external contacts:

– External blocking
– Start boiler externally as the last one in the boiler sequence

Multi boiler systems with third party control unit:
■ Functions via external contacts:

– Boiler enable/butterfly valve control
– Blocking the external boiler/starting the external boiler in the boiler

sequence

■ Additional functions by means of the EA1 extension (accessories):

– External demand through default set boiler water temperature and

boiler enable via 0 to 10 V input

Note
An EA1 extension must be connected to every Vitotronic 100.

■ Additional functions via AM1 extension (accessories, part no. 7452

092):
Control of circulation pump for neutralising system if output

sÖ

already assigned at the control unit.

Control characteristics

■ PI characteristics with three-point output for modulating burners
■ Maximum boiler water temperature limit:

20 up to 127 °C (lower switching point subject to boiler/boiler coding
card)

■ Setting range of the set DHW temperature:

10 to 60 °C, adjustable to 10 to 95 °C

Boiler coding card

For matching to the boiler (supplied with the boiler).

Setting the operating programs

Frost protection monitoring for the boiler and DHW cylinder is enabled
in all operating programs.
The following operating programs can be selected:
■ Single boiler systems:

– Heating and DHW
– Only DHW
– Standby mode

■ Multi boiler systems:

– Heating
– Standby mode

Summer mode (only in single boiler systems)

("DHW only")
The burner starts only when the DHW cylinder needs reheating (con-
trolled by the cylinder temperature controller).

Specification

Rated voltage

230 V~

Rated frequency

50 Hz

Rated current

2 x 6 A~