Emergency Shutdown; Prolonged Shutdown - Watts AERCO Benchmark 2.0LN User Manual

Benchmark 2.0LN Dual-Fuel Low NOx Boiler
CHAPTER 1: SAFETY PRECAUTIONS
electrical voltages up to 120 vac may be used in this equipment.
Therefore the cover on the unit's power box (located behind the
front panel door) must be installed at all times, except during
maintenance and servicing.
Must be observed to prevent equipment damage or loss of
operating effectiveness.
Many soaps 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 the unit. The installer must identify the emergency shut-off
device.
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
Page 10 of 158
Operation and Maintenance Manual
WARNING
CAUTIONS
CAUTION
CAUTION!
IMPORTANT
Figure 1-1: Manual Gas Shutoff Valve
GF-127
OMM-0052_0E
PR2: 04/22/13