AERCO Esteem Boiler with EZ-Set Controller - Manual (Page 17)

GF-135
Esteem 399 Low NOx Boiler Chapter 2
OMM-0089_0A Installation, Operation & Maintenance Manual Installation
WARNING!
When installing the Esteem boiler in a confined space, sufficient
air must be provided for proper combustion and venting and to
allow, under normal operating conditions, proper air flow around
the product to maintain ambient temperatures within safe limits to
comply with the National Fuel Gas Code NFPA 54…Latest
Edition.
2.5 RESIDENTIAL GARAGE INSTALLATIONS
When installing the Esteem boiler in a residential garage, the following special precautions
per NFPA 54/ANSI Z223.1 must be taken:
• Mount the unit a minimum 18 inches [458 mm] above the floor level of the garage.
• Ensure the burner and ignition devices / controls are no less than 18 inches [458
mm] above the floor level.
• Locate or protect the unit in a manner so it cannot be damaged by a moving vehicle.
2.6 BOILER FREEZE PROTECTION FEATURE
The boiler control has a freeze protection feature built in. This feature monitors the boiler
temperature and responds as follows when no call for heat is present:
• 46ºF [8ºC] CH (1) & Auxiliary Boiler Pumps ON
• 42ºF [6ºC] CH (1), Auxiliary Boiler & System Pumps ON, Burner operates at low fire
• 60ºF [15ºC] Freeze protection ends. Burner & all pumps OFF after completing CH
Post Pump Time.
CAUTION!
The boiler freeze protection feature is disabled during a hard
lockout, however the space heating circulator will operate.
CAUTION!
The boiler freeze protection feature is designed to protect the
boiler. The boiler should be installed in a primary/secondary piping
arrangement if it is installed in an unheated space or exposed to
water temperatures of 46ºF or less. See “Chapter 5 Boiler Piping”
for primary/secondary piping examples. See Section 11.1.6 for
antifreeze guidelines.
Page 17 of 188 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0089_0A
MC1 06/19/14 Ph.: 800-526-0288