Draining The Boiler On The Heating Water Side - Viessmann Vitodens 222-F Installation And Service Instructions For Contractors

Troubleshooting
Maintenance
(cont.)
1.
2.
3.
Fig. 52

Draining the boiler on the heating water side

A
Fig. 53
1. Close the shut-off valves on the heating water side. 3. Open drain valve and drain the boiler as much
A
as required.
2. Route hose at drain valve into a suitable con-
A
tainer or drain outlet.
102