Pipe Joint Assembly; Support Methods; Vertical Support; Horizontal/Vertical Guide Spacing - ENERVEX PowerStack EPSC Installation & Operating Manual

010.8030.1222 12.22

1.10 PIPE JOINT ASSEMBLY

PowerStack components have a male-to-female joint system
with an integrated Elastomer Triple Lip Seal. The installation
orientation is female end points downstream. Flow direction
is indicated by an arrow on the product label.
When assembling two parts together, the joint will overlap
1.96" (50mm). Effective length is nominal length minus 1.96"
(50mm).
STRAIGHT
SECTIONS
L50
L40
L30
L20
L10
L4
Table 1-3: Effective Lengths

1.11 SUPPORT METHODS

Several support and guiding methods are used to anchor the
vent against upward, downward and angular displacement.
The supports and guides used with thermal expansion
devices prevent bending stresses on the vent elbows and
joints.

1.12 VERTICAL SUPPORT

The maximum height limits for each support method is
shown in Tables 1-4, 1-5 and 1-6.
MAX. HEIGHT ABOVE SUPPORT PLATE
SIZE
Inch
(mm)
4
(100)
5
(125)
6
(150)
7
(175)
8
(200)
10
(250)
12
(300)
14
(350)
Table 1-4: Support Above Base Plate
EFFECTIVE LENGTH
in (mm)
47.00
(1195)
38.35
(974)
28.50
(724)
18.66
(474)
8.82
(224)
3.86
(98)
ft (m)
EPSC
275
(84)
219
(67)
190
(58)
156
(48)
145
(44)
114
(35)
95
(29)
82
(25)
Note 1: The values in Table 1-4 have not been confirmed by UL LLC.
Note 2: Maximum distance between supports is 30 feet (9.1 m)
MAX. FREESTANDING ABOVE ROOF SUPPORT
SIZE
Inch
(mm)
4-14
(100-350)
Table 1-5: Freestanding Above Roof Support
Proper guying and bracing is essential for part of the vent
that extends above the roof or parapet wall. The vent at
this point is subject to wind conditions and needs special
attention for proper stabilization.
If the vent above the roof does not exceed dimensions in
Table 1-5, no special guying or bracing is required. However,
to protect the flashing from lateral movement, a guide
must be installed at the roof level. The vertical freestanding
height above the roof or top guide is limited due to wind
considerations.
For vent height above the roof that needs guying or bracing,
a support, a small length and a expansion length must be
installed near the roof level to absorb the thermal expansion
and minimize this effect on the guy wire or brace.
When using guy wire, the cable must be slightly slack or
loose to allow thermal expansion.

1.13 HORIZONTAL/VERTICAL GUIDE SPACING

Full Rings are used in vertical installations as wall guides to
maintain proper alignment of the system and are for lateral
support for wind loads.
MAX. HOR./VERT. GUIDE SPACING
SIZE
Inch
(mm)
4-14
(100-350)
Table 1-7: Horizontal / Vertical Guide Spacing
1.14 HORIZONTAL SUPPORT SPACING
Horizontal installations or horizontal portions of vertical
installations are supported by use of Half or Full Rings that
are installed using minimum ½" threaded rod or structural
steel (provided by others). See Table 1-7 for maximum
spacing between horizontal supports.
Plate Supports are also used to support and stabilize the
system at changes in direction and when using expansion
sections.

1.15 VERTICAL INSTALLATION REQUIREMENTS

Vent systems without provisions for draining rain water must
use a Rain Cap.
Terminations or approved mechanical draft systems specified
or provided by the appliance manufacturer are permitted.
6
ft (m)
EPSC
5.0
(1.52)
ft (m)
EPSC
8.2
(2.5)