GF
-
128
Innovation Series Water Heaters
Chapter 2
OMM-0079_0B
USER MANUAL
Installation
Page
26
of
200
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph.: 800-526-0288
07/21/11
2.14.1 Combustion From Outside the Building
Air supplied from outside the building must be provided through two permanent openings. For each unit
these two openings must have a free area of not less than one square inch for each 4000 BTUs input of
the equipment or 250 square inches of free area. The free area must take into account restrictions such as
louvers and bird screens. For Canada installations, refer to the requirements specified in CSA B149.1-10,
8.4.1 and 8.4.3.
2.14.2 Combustion Air from Inside the Building
When combustion air is provided from within the building, it must be supplied through two permanent
openings in an interior wall. Each opening must have a free area of not less than one square inch per 1000
BTUH of total input or 1000 square inches of free area. The free area must take into account any
restrictions, such as louvers.
2.15 SEALED COMBUSTION
The AERCO Innovation Water Heater is UL listed for 100%-sealed combustion. For sealed combustion
installations, the screen
inlet air ductwork must then be attached directly to the unit’s air inlet.
In a sealed combustion air application, the combustion air ducting pressure losses must be taken into
account when calculating the total maximum allowable venting run. See the AERCO Innovation Venting
and Combustion Air Guide, GF-5050. When using the heater in a sealed combustion air configuration,
each unit must have a minimum 6 inch diameter connection at the unit.
