Emergency Shutdown; Prolonged Shutdown - Aerco BENCHMARK 2500DF User Manual

Benchmark 2500DF-3000DF Installation, Operation & Maintenance Manual
• A three-pole switch must be installed on the electrical supply line
of the unit. The switch must be installed in an easily accessible
position to quickly and safely disconnect electrical service. Do
not affix switch to unit sheet metal enclosures.
• Many types of soap used for gas pipe leak testing are corrosive
to metals. The piping must be rinsed thoroughly with clean water
after leak checks have been completed.
• Do not use this boiler if any part has been under water. Call a
qualified service technician to inspect and replace any part that
has been under water.

1.2 EMERGENCY SHUTDOWN

If overheating occurs or the gas supply fails to shut off, close the manual gas shutoff valve (Figure 1-1)
located external to the unit.
The Installer must identify and indicate the location of the
emergency shutdown manual gas valve to operating personnel.

1.3 PROLONGED SHUTDOWN

After prolonged shutdown, it is recommended that the startup procedures in Chapter 4 and the safety
device test procedures in Chapter 6 of this manual be performed to verify all system-operating
parameters. If there is an emergency, turn off the electrical power supply to the AERCO boiler and close
the manual gas valve located upstream of the unit. The installer must identify the emergency shut-off
device.
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05/21/2014
CHAPTER 1 – SAFETY PRECAUTIONS
WARNING!
NOTE
MANUAL GAS SHUT-OFF VALVE
VALVE OPEN
Figure 1-1: Manual Gas Shutoff Valve
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
VALVE CLOSED
OMM-0099_0A
GF-145