MAINTENANCE
7-5
7.8 SHUTTING THE BOILER DOWN FOR
AN EXTENDED PERIOD OF TIME
If the boiler is to be taken out of service for an
extended period of time, one year or more, the
following instructions must be followed:
1. Set ON/OFF switch on the front panel to the
OFF position to shut down the boiler’s
operating control.
2. Disconnect AC power from the unit.
3. Close supply and return valves to isolate
boiler.
4. Close external gas supply valve.
5. Open relief valve to vent water pressure.
7.9 PLACING THE BOILER BACK IN
SERVICE AFTER A PROLONGED
SHUTDOWN
After a prolonged shutdown (a year or more), the
following procedures must be followed:
1. Review installation requirements as shown
in Chapter 2.
2. Inspect all piping and connection to the unit.
3.
Inspect exhaust vent, air duct (if applicable)
and gas regulator vent lines at their
termination points. Check that they are clear
and free of debris or pests.
4. Perform initial startup per Chapter 4.
5. Perform safety device testing and
maintenance procedures per Chapters 6 and
7 of this manual.
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