Preparing Boiler For Servicing; Returning A Boiler To Service; Change In Ownership; Operational Limits Of The Boiler - Watts AERCO MLX EXT 321 Installation, Operation & Maintenance Manual

Modulex Light Commericial Series
CHAPTER 2: General Information

Preparing Boiler for Servicing

Before carrying out any cleaning or servicing turn off the electrical supply to the boiler by means
of the ON/OFF switch and/or by means of the appropriate shutdown devices.

Returning a Boiler to Service

Before putting a boiler, which has been unused for a length of time, back into service, rinse the
entire domestic hot water system, allowing the water to flow an appropriate amount of time in
order to circulate throughout the entire system.

Change in Ownership

If the appliance is sold or transferred to another owner, or if the present user moves from the
installation site and leaves the appliance installed, ensure that the manual stays with the
appliance so that it can be consulted by the new owner and/or installer.

2.12 OPERATIONAL LIMITS OF THE BOILER

•
Max. boiler temperature: 180° F
•
Max Allowable Working Temperature ASME: 200 °F
•
Max. Allowable Working Pressure ASME: 92 psi
OMM-0087_J • GF-143 • 11/17/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
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