Reznor UEAS Unit Installation Manual - Manual (Page 16)

Combustion Air Pipe Support - Support a single-wall metal horizontal combus-
tion air run every six feet (1.8M). Support a vertical single-wall metal combustion
air pipe in accordance with accepted industry practices. The heater and concentric
adapter box may be used to support a vertical combustion air pipe.
7.2.1.8 Vent Pipe
Clearance
Vent Pipe - Do not install the vent piping near any high temperature steam lines,
radiant heaters, or other sources of heat.
7.2.1.9 Concentric
Adapter Box
All Model UEAS installations require a concentric adapter box as illustrated in FIG-
URES 11, 12, 13, and 14. The concentric adapter box is included in both the hori-
zontal and vertical vent/combustion air kits. Installation is included in the Option
CC6 and Option CC2 instructions.
FIGURE 11 - A Concentric Adapter
Box is a Required Part of all Model
UEAS Installations
A vent/combustion air kit which
includes the concentric adapter box is
ordered with the heater. A horizontal
terminal vent/combustion air kit is
Option CC6; a vertical terminal vent/
combustion air kit is Option CC2.
Heater Side
View
of the
Concentric
Adapter Box
FIGURE 12 - Concentric
Adapter Box Dimensions 1-7/8”
(48mm)
6-3/16”
(157mm)
2”
(51mm)
9-11/32” (237mm)
5-11/23”
(136mm)
8” diameter Collar for
Combustion Air Pipe
6” diameter Collar for
Combustion Air Pipe
6” diameter Collar for
Combustion Air Pipe
14-3/8”
(365mm)
4-3/32”
(104mm)
5-9/32”
(134mm)
6-1/8”
(156mm)
6-1/8”
(156mm)
1-1/16” (27mm)
16” (406mm)
17” (432mm)
Opening for 4”
diameter Vent Pipe
Silicone
Ring
Top
View
Heater
Side
View
7.2.1 Vent/Combustion Air System Requirements (cont’d)
7.2 Venting and
Combustion Air
(cont’d)
7.0 Mechanical
(cont’d)
7.2.1.7 Support (cont’d)
Form I-UEAS, Page 16