AERCO Esteem Boiler with EZ-Set Controller - Manual (Page 16)

GF-135
Esteem 399 Low NOx Boiler Chapter 2
OMM-0089_0A Installation, Operation & Maintenance Manual Installation
The Esteem 399 Low NOx should be installed in a location so that any water leaking from the
boiler or piping connections or relief valve will not cause damage to the area surrounding the
unit or any lower floors in the structure.
2.3 BOILER REPLACEMENT
If the Esteem 399 is replacing an existing boiler, the following items should be checked and
corrected prior to installation:
• Boiler piping leaks and corrosion.
• Improper location and sizing of the expansion tank on the boiler heating loop.
• If applicable, level and quality of freeze protection within the boiler system.
• See the warning in section 17.22 Handling Previously Fired Combustion Chamber
Insulation.
2.4 RECOMMENDED CLEARANCES
The Esteem 399 Low NOx is approved for zero clearance to combustibles, excluding vent and
boiler piping.
• Boiler Piping - 1/4 inch from combustible materials.
• See Vent System Installation Supplement GF-125V for vent clearance requirements.
To provide service access to the unit it is recommended that the following clearances be
maintained:
Surface Dimension
Top Jacket
24 inches [610 mm].
Front
24 inches [610 mm].
Rear
0 inches
Sides
6 inches [153 mm]
Bottom Piping
24 inches [610 mm].
WARNING!
If the clearances listed above cannot be maintained or the
enclosure in which the boiler is installed is less than 85 cubic feet,
the space must be ventilated. See chapter 3 for requirements.
NOTE
When maintaining zero clearance or less than recommended
clearances, some product labeling may become hidden and
unreadable.
Page 16 of 188 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0089_0A
MC1 06/19/14 Ph.: 800-526-0288