Element
Section 10: Edge SC Controller Operation
L-OMM-0003_A
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It is generally agreed that in a laboratory setting, a temperature of 122°F (30°C) results in an
equilibrium point where certain species of Legionella are proliferating and dying at the same
rate. Legionella populations begin to reduce at higher temperatures and per the following texts,
Legionella die rapidly at temperatures above 158°F (70 °C):
ASHRAE. 2020. Guideline 12
– Managing the Risk of Legionellosis Associated with Building
Water Systems
USEPA. 2016.
Technologies for Legionella Control in Premise Plumbing Systems
: Scientific
Literature Review. EPA 810-R-16-001. US EPA Office of Water.
Regular testing for Legionella and regular water heater sanitation cycles in compliance with
ASHRAE 188 is recommended
as part of your building’s Water Management Plan.
Before starting the sanitation loop, review and accept the disclaimer notice.
W A R N I N G :
There is a risk of severe scalding with raising the temperature of the water heater. Only
authorized personnel should initiate a water heater sanitation loop cycle.