Installation manual
THIRD, Attach the bird guard on the
exhaust (vent) terminal with the
sheetmetal screws provided.
FIRST, Install the
Combustion Air Inlet.
1) Slide the combustion air
inlet down over the vent pipe.
2) Fasten bottom of inlet to
the combustion air pipe with
sheetmetal screws. Be sure
not to penetrate the vent pipe.
SECOND, Slide the rubber rain cover
down over the end of the 4 vent pipe
until it is seated flush on the top of the
combustion air inlet. Do not seal
with silicone or tape.
FIGURE 19 - Install Combustion Air Inlet,
Rain Collar, and Bird Screen
FIGURE 20 - Typical Installation of a Model UEAS High Efciency, Separated-Combustion
Unit with a Vertical Vent/Combustion Air Terminal (Option CC2)
Rear
View
Side View
Installation of the vertical vent and combustion air
system on your separated-combustion unit is com-
plete. Verify compliance with all venting installation
requirements, pages 13-18, and FIGURE 20.
7. Attach the indoor combustion air pipe. Use
eld-supplied sheetmetal screws to attach the sin-
gle-wall combustion air pipe run to the collar on the
concentric adapter box. Seal with tape or sealant.
8. On the outside, install the combustion air
inlet, the rain collar, the bird screen, and eld-
supplied ashing.
8a) Slide the combustion air inlet over the vent pipe
and fasten the collar to the combustion air pipe with
sheetmetal screws. Seal the joint with tape or seal-
ant. See FIGURE 19.
8b) To prevent rain water leakage, slide the rain col-
lar over the end of the 4” vent pipe and seat it ush
on the top of combustion air inlet. Do not use seal-
ant.
8c) Attach the bird guard with the two sheetmetal
screws provided (See FIGURE 19.
8d) On the outside (See FIGURE 18), ash the com-
bustion air pipe to the roof. Flashing is eld-supplied.
Form I-UEAS, P/N 221232 R11, Page 25