AERCO Esteem Boiler with EZ-Set Controller - Manual (Page 128)

GF-135 Esteem 399 Low NOx Boiler
Chapter 18
OMM-0089_0A Installation, Operation & Maintenance Manual Controller Operation
18.3.14 Freeze Protection (Default: Enabled)
Figure 18-18: FREEZE PROTECTION Menu
Freeze Protection allows the freeze protection feature to be enabled and disabled. Press the UP
or DOWN buttons to select Enabled or Disabled then press the OK button to store the setting.
Enabled:
The Freeze Protection feature is enabled to protect the boiler from freezing. This
feature monitors the boiler water temperature and responds as follows when no call is present:
• 46°F [8°C]: Auxiliary Boiler Pump ON
• 42°F [6°C]: CH(1), Auxiliary Boiler & System Pumps ON. Burner operates at low fire.
• 60°F [15°C]: Freeze protection ends. Burner & all pumps OFF after completing CH Post
Pump Time.
Disabled:
The Freeze Protection feature is disabled.
WARNING!
• Freeze Protection should only be disabled when the system
contains antifreeze to prevent the system from freezing. Serious
damage could occur to the boiler as well as the entire heating
system if freeze Protection is disabled without antifreeze in the
system.
• The boiler should NEVER be installed in a location where
freezing could occur. Subjecting the boiler to freezing conditions
could lead to freezing of the condensate, and the possibility of
causing serious injury or death.
Page 128 of 188 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0089_0A
MC1 06/19/14 Ph.: 800-526-0288