Install Instructions
!LLOWABLEVENTAIRPIPEMATERIALSLENGTHS
Use only the vent materials and kits listed in
Figure 21, page 19. Provide pipe adapters if
specified.
1. Locate the terminations such that the total air pip-
ing and vent piping from the boiler to the termina-
tion will not exceed the maximum length given in
Figure 20, page 18.
For polypropylene applications, comply with
any additional requirements in the vent system
manufacturer’s instructions. Provide 4” PVC-
to-PP transition pieces at the boiler vent and
air connections. PP adapter must have smooth,
straight section of pipe to insert in to the boiler
vent and air connections and must fit and seal
tightly. PP adapters with their own seal which
would interfere with the internal seal of the
boiler vent or air connections must not be
used. Refer to page 115 for a list of compliant
adapters. Install a locking collar at every joint.
For AL29-4C vent pipe applications, comply
with any additional requirements in the vent
system manufacturer’s instructions. Provide
a 4” PVC transition piece at the boiler vent
connection. The air piping must be PVC or
CPVC.
2. For 4” to 3” transitions, must use appropriate vent
material. For polypropylene or stainless steel must use
approved suppliers transitions (EVG 220 only).
$ETERMINETERMINATIONLOCATION
1. Wall penetration thickness between 0” to 24”.
2. The air and vent terminations must be installed as shown
in Figure 34.
3. The terminations must comply with clearances and
limitations shown in Figure 22, page 21.
4. Locate the terminations so they are not likely to be dam-
aged by foreign objects, such as stones or balls, or subject
to buildup of leaves or sediment.
-ULTIPLEVENTAIRTERMINATIONS(Figure 35, page 30)
1. When terminating multiple Evergreen
TM
boilers, termi-
nate each vent/air connection as described in this section.
Terminate all vent pipes at the same height
and all air pipes at the same height to avoid
possibility of severe personal injury, death or
substantial property damage.
2. Place roof penetrations to obtain minimum clearance of
12 inches between edge of air intake elbow and adjacent
vent pipe of another boiler for U. S. installations (see
Figure 35, page 30). For Canadian installations, provide
clearances required by CSA B149.1 or B149.2 Installation
Code and a ULC S636 compliant vent kit.
3. The air inlet of a Evergreen boiler is part of a direct vent
connection. It is not classified as a forced air intake with
regard to spacing from adjacent boiler vents.
&IGURE Separate pipes vertical termination
4ERMINATEVENTANDAIRPIPESSUCHTHAT
A !)2).4!+%IS AT LEAST 12 inches below vent outlet.
B !)2).4!+% IS NO FURTHER than 12 inches away center to
center.
C !)2).4!+% IS AT LEAST 12 inches above roof or snow line,
Keep vents/air intake area clear of accumulating snow.
D 6ENTANDAIRTERMINATIONSARElTTEDWITHBIRDSCREENS
3TEP Read and follow all instructions in this manual. $/ ./4
PROCEEDWITHVENTAIRINSTALLATIONUNTILYOUHAVEREAD
PAGETHROUGHPAGE
See notices
at left.
3TEP Install the boiler in a location that allows proper routing of all
vent and air piping to the selected location.
3TEP Make sure the selected vertical termination location complies
with Figure 22, page 21. (Multiple boiler terminations must also
comply with Figure 35, page 30.)
3TEP Use only the vent materials listed in Figure 21, page 19. Provide
pipe adapters where required. Vent piping and air piping lengths
must not exceed the values shown in Figure 20, page 18.
3TEP Prepare the vertical penetrations and secure penetration com-
ponents as instructed in this section. See “Prepare roof penetra-
tions” and “Termination and fittings” on page 30.
3TEP The air piping must terminate in a 180-degree return bend or
DOWNTURNEDELBOW as shown above. The vent piping must
terminate in a COUPLINGPOINTEDUPWARD as shown above.
3TEP Install vent and air piping between the boiler and the vertical
terminations. Slope horizontal piping downward toward the
boiler at least 1/4 inch per foot. Install pipe supports every 5 feet
on both the horizontal and vertical runs. Install a hanger sup-
port within 6 inches of any upturn in the piping. See page 36 for
general guidelines. Also comply with vent pipe manufacturer’s
instructions.
See notices at left.
3TEP Insert the vent and air piping through the vertical penetrations
and secure the termination fittings.
3TEP Maintain clearances shown above. Vent and air terminations
must be fitted with a bird screen as shown.
53%37%%0%,"/73&/2!,,6%.4!.$
!)20)0).' — DO NOT use short radius elbows
for vent or air piping. Boiler performance could be
affected.
Part number 550-100-131/0715
– 29 –
™
GAS-FIRED WATER BOILER — Boiler Manual
DIRECT VENT — Vertical with separate pipes