Reznor UEAS Unit Installation Manual - Manual (Page 14)

Model
UEAS
Attach installer-provided PVC tee
to the 4” vent pipe outlet.
Balance of the vent may be either
horizontal or vertical. Slope a
horizontal run downward slightly
toward the vent condensate drain
at the heater.
Field-supplied Fittings
as needed for 1/2” or
larger condensate drain
Both the vent condensate drain and the heat exchanger condensate drain require a trap and must go
into a sanitary drain. (See Paragraph 7.3, pages 25-26, for requirements on installing the condensate drain.)
All vent and drain parts in this illustration are field supplied.
THIS PVC PIPING ARRANGEMENT APPLIES TO ALL
CANADIAN INSTALLATIONS. In Canada, all PVC vent pipe must
be approved to ULC S636. All venting and drain parts in this
illustration are field supplied. This is an acceptable
alternate PVC piping arrangement for installations
in the United States.
FIGURE 9B -
CANADIAN
OR U.S.
INSTALLATION
Horizontal or
Vertical Vent
showing Where
to Install the
Condensate
Drain
Connection in
the Horizontal
Vent Run
7.2.1.5 Combustion
Air Pipe Diameter and
Length
• Minimum length of pipe between the heater and the concentric adapter box is
3 ft (914mm). The minimum/maximum requirements of the length of vent pipe
that extends outdoors are different for horizontal and vertical vent terminals. See
instructions for Option CC2 or Option CC6.
Diameter and Length of the Combustion Air Inlet Pipe
Model UEAS 130, 180, 260, 310 Diameter Length
Section From Heater to Concentric
Adapter Box
6"
Same as Vent Pipe
(152mm)
Section From Concentric Adapter
Box to Outdoors
8" See Instructions for Option CC2,
pages 21-24, or CC6, pages 18-21. (203mm)
Vent Pipe Diameter and Maximum Vent Pipe Length from Heater to
Terminal End for Vertical and Horizontal Vent
Model
UEAS
Vent Pipe
Diameter
Maximum Vent
Pipe Length
Equivalent Straight Length for a
90° Sweep Elbow* 45° Elbow
inches mm feet M feet M feet M
130, 180,
260, 310
4 102 50 15.2 8 2.4 4 1.2
* All 90° elbows in the vent system must be sweep type.
7.2.1.4 Vent Pipe
Diameter and Length
7.2.1.6 Joints Provide pipes and fittings in type specified in Paragraph 7.2.1.1, page 12. When
ready to install the vent system, follow the instructions below to make joints.
Vent Pipe
Combustion Air Pipe Secure slip-fit joints of single-wall combustion air pipe with sheetmetal screws or
rivets. Seal joints and seams with aluminium tape or silicone sealant.
The Schedule 40 PVC or CPVC vent system should be installed in a manner
consistent with normal industry standards and in compliance with all local fire and
building code requirements. Failure to follow proper installation practices, proce-
dures, or techniques can result in system failure, property damage, or personal
injury. The installer is responsible for the installation. Read all of the procedures
below before beginning installation. Make joints one at a time as pipe and fitting
should be assembled quickly while cement is fluid.
1. Cut the pipe square. An angled cut may result in joint failure.
Remove burrs using a deburring tool, a file, or a knife edge. Remove all burrs
from the inside and outside diameter of the cut end of the pipe. Chamfer (bevel)
the end of the pipe 10° to 15°.
b) Use a clean dry cloth to remove surface dirt, grease, and moisture from the
pipe sections and fittings.
7.0 Mechanical
(cont’d)
7.2.1 Vent/Combustion Air Requirements (cont’d)
7.2 Venting and Combustion Air (cont’d)
Form I-UEAS, Page 14