Draining The Boiler; Draining The Heating Circuit - Dunkirk DCBF-100 Manual

DANGER
!
Before servicing, turn off electrical power to
boiler at service switch. Close manual gas valve
to turn gas supply OFF to boiler. Failure to
comply will result in death or serious injury.

11.4 Draining the Boiler

• turn boiler off
• isolate electrical supply
• close boiler gas service cock
• allow boiler to cool
• drain boiler through onboard drain if available or
external drain valve.

11.5 Draining the Heating Circuit

• Follow all steps in 11.4.
• Close central heating flow and return valves.
• Connect suitable pipe to drain point.
• Route it to suitable container.
• Open drain tap.
11-1 ELECTRODES
11 - GENERAL MAINTENANCE AND CLEANING
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240013375 REV A, [07/01/2021]