Viessmann VITODENSd 100-W Technical Data Manual page 17

Vitodens 100-W, WB1B Technical Data
Venting Options / Electrical Connections
Vitodens 100-W Venting Options
For detailed information refer to the Vitodens Venting
System Installation Instructions.
Electrical Connection
All electrical connections are made to the boiler's
integrated power pump module (120 VAC/60 Hz).
Use disconnect means and power service switch
as per local code requirements.
Start-up and Maintenance
Start-up and Maintenance
Control Unit
Function and construction:
The control is integrated into the Vitodens 100-W boiler.
Integrated diagnostic system
g
For room temperature-dependent operation,
g
an external control or a room temperature thermostat
may be connected
To control DHW temperature, a separate DHW
g
controller may be connected
External heat demand
g
0-10 V (with open therm only)
g
Viessmann outdoor temperature sensor (field wiring)
g
Open Therm (field wiring)
g
CombiPLUS instantaneous DHW control
g
The control unit consists of:
LCD Display
g
Selector dial for boiler water temperature adjustment
g
Selector dial for service setting
g
Temperature adjustable high limit
g
Boiler temperature sensor
g
Burner fault display
g
Burner fault reset
g
Pressure gage
g
Fuse
g
Boiler temperature sensor
The boiler temperature sensor is connected to the control
unit and built into the boiler.
Frost protection
Frost protection is continuously active. The burner is
switched ON when the boiler water temperature reaches
41° F (5° C) and is switched OFF again when the boiler
water temperature reaches at least 59° F (15° C)
[but not more than 68° F (20° C)].
For details on the control, refer to the
Vitodens 100-W Operating Instructions.
Installation
17