AERCO KC1000 Water Heater July 2011 - Manual (Page 18)

INSTALLATION
2-10
In addition, Cold Air Damper # 99026 must be
installed. It should be located along the inlet duct
run as close as possible to the KC1000 (See
Figure 2.12). The Cold Air Damper must be
placed on individual sections (one Damper per
unit), not in a manifold section. The adjustment
screw on the Damper should be moved to the
center of the slot position and tightened 1/2 turn
past “finger-tight”. DO NOT over-tighten.
See AERCO Venting Guide GF-1050 for further
details.
6" MINIMUM
6x3 REDUCER
COLD AIR DAMPER
(FOR KC1000 LOW NOX)
Figure 2.12
Sealed Combustion Air Connection