Reznor UEAS Unit Installation Manual User Manual

Page 21

Parts in the Vertical Vent

Terminal/Combustion Air

Package (Option CC2)

Components Required - Factory and Field

7.2.3 VERTICAL VENT

TERMINAL Installation -

Option CC2

Complete Vertical Vent/Combustion Air Kit (Same as Option

CC2), P/N 221248

Qty

P/N

Description

221069

Concentric Adapter Box with Silicone Sealing Ring (See

Paragraph 7.2.1.9, pages 16-17.)

221215

Bird Guard

37661

Screws for Bird Guard. #10x1/2" self-drilling

221250

Combustion Air Inlet

221185

Rain Collar

221091

4" PVC Cap for Vent Condensate Drain Connection (See

FIGURE 8A and 9A on page 13.)

6b) Drill a hole to attach the elbow at the end and

install the pipe. Being sure the vent pipe is in the proper

flow direction, temporarily fit the elbow on the exhaust

end of the vent pipe. For easier future service, the elbow

is being attached using one field-provided 3/4” long

sheetmetal screw. Using a drill that is a size smaller than

the 3/4” long sheetmetal screw, with the elbow pointing

down, drill a pilot hole through the top center of the elbow

socket and the vent pipe.
Remove the elbow. In the elbow only, enlarge the drilled

hole to 7/32”. The elbow will be attached from the outside

in Step 8b).
With the pipe turned so that the drilled hole is at the top,

slide the end of the vent pipe out through the box and

the combustion air pipe. Position the vent pipe so that it

will extend between 3” (76mm) and 6” (152mm) past the

end of the combustion air pipe. Adjust the pipe so that

the screw hole is in the top center. Verify that the silicone

sealing ring on the box is properly seated.

Do not add

sealant to the ring.

Join the “terminal end” vent pipe to the vent pipe run.

Re-check the silicone ring to be sure that it is still

properly seated.
7. Attach the indoor portion of the combustion air

pipe. Use sheetmetal screws to attach the single-wall

combustion air pipe run to the collar on the concentric

adapter box. Seal with tape or sealant.
8. On the outside, install the inlet air guard spacers,

attach the elbow, install the bird screen, and seal or

flash around the combustion air pipe.

8a) Remove the screws holding the inlet air guard

(installed in Step 4c). Slide the spacers onto the ends of

the four spokes that support the vent pipe. Re-attach the

guard.
8b) Slide the elbow over the end of the vent pipe and

attach it with the field-provided 3/4” long sheetmetal

screw. Slide the bird screen into the socket on the open

end of the elbow. The elbow must be pointing down.
8c) Seal around the combustion air pipe with an outdoor

caulking material or a masonry cement or a combination

of flashing and caulking. Adjust the sealant and the

pipe so that the metal pipe will have a slight downward

slope to the outside. The downward slope and the 1/2”

drain hole (Step 4b) will prevent rain water from running

through the pipe into the concentric adapter box.
Installation of the horizontal vent and combustion

air system on your separated-combustion unit is

complete. Verify compliance with all venting installation

requirements, pages 12-17, and

FIGURE 16.

• Vent pipes and fittings as illustrated in

FIGURE 8A, 8B, 9A or 9B on pages 13

and 14

• Combustion air pipes (6” and 8” single-wall galvanized pipe)

• Flashing

• Sheetmetal screws, tape, primer, cement, and sealant as required

Field-supplied

requirements:

Form I-UEAS, P/N 221232 R13, Page 21