Checking All Connections On The Heating Water And Dhw Sides For Leaks; Checking The Gas Type - Viessmann B1KE Combi Series Installation And Service Instructions Manual

Commissioning

Checking All Connections on the Heating Water and DHW Sides for Leaks

Purging the Heating System
1. Close the gas shut-off valve and switch the boiler ON.
2. Open the automatic air vent valve.
Note: To use the purging function, an automatic air
vent valve must be installed on site.
3. Activate the purging program.
4. Adjust the system pressure.
The boiler pressure gauge shows the system pressure.
5. Disconnect the supply hose from the boiler drain and
fill valve.
6. Open the gas shut-off valve.

Checking the Gas Type

44
Vitodens 100-W, B1HE/B1KE Combi Installation/Service
WARNING
Risk of electric shock from escaping heating water or
DHW.
When commissioning and after carrying out
maintenance work, check all water side connections
for leaks.
Check heating system and domestic hot water
connections (if applicable). Ensure all connections are
pressure tight.
Correct any leaks found on fittings, pumps, valves, etc.
Activating the purging function
If the purging function is to be activated after
commissioning.
Tap the following buttons:
1. and OK simultaneously for approx. 4 sec,
then release.
2. Use to select "Basic settings".
3. OK
4. Use to select "Commissioning assistant".
5. OK
6. for "Next" and OK until "Purging" appears.
7. OK
The purging function is activated.
The purging function ends automatically after 20 min
or when you tap OK.
The Vitodens 100-W boiler is for use with gases whose
characteristics fall within the following ranges. Do not
use any other types of gas.
Natural gas
Heating value (gross)
Btu/ft 3 970 to 1100 2466 to 2542
Specific gravity 0.57 to 0.70 1.522 to 1.574
Ultimate carbon
dioxide (CO ) % 11.7 to 12.2 13.73 to 13.82
2
1. Verify that the fuel type listed on the boiler rating plate
is the correct type for the installation being attempted.
2. Once verified, record the fuel type in Maintenance
Record on page 99.
Liquid Propane gas