Draining The Boiler; Draining The Heating Circuit - UTICA BOILERS MAH-125 Installation, Operation And Maintenance 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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240011941 REV B, [03/31/2018]