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Instructions below - are for the WM 3” and 4” PVC
Concentric Kit. If using Simpson-Duravent or Centrotherm
Concentric kit, please refer to the manufacturer’s installation
instructions.
Allowablevent/airpipematerials&lengths
1. e concentric termination kit must be purchased separately.
Use only the vent materials and kits listed in Fig-
ure24,page21. Provide pipe adapters if specied.
2. Locate the termination 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
Figure23,page20.
3.
is termination requires a 45-degree elbow that is not sup-
plied with the termination kit. e maximum vent/air pipe
len
gths include allowance for this elbow.
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 con-
nections. PP adapter must have smooth, straight
section of pipe to insert in to the boiler vent and
air connections and must t and seal tightly. PP
adapters with their own seal which would inter-
fere with the internal seal of the boiler vent or air
connections must not be used. Refer to page117
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 at the boiler vent connection. Air pipe
must be PVC or CPVC. Provide transition pieces
to PVC at the vent and air pipe termination con-
nections.
4. For 4” to 3” transitions, must use appropriate vent material.
For polypropylene or stainless steel must use approved sup-
pliers transitions (EVG 220 only).
Determineterminationlocation
1. Wall penetration thickness between 0” to 24”.
2. e concentric termination kit must be installed as shown
in Figure36,page30.
3. e termination must comply with clearances and limita-
tions shown in Figure25,page23.
4. Locate the termination so it is not likely to be damaged
by foreign objects, such as stones or balls, or subject to
buildup of leaves or sediment.
Multiplevent/airterminations
1. When terminating multiple Evergreen
®
boilers, install each
concentric termination as described in this manual.
All vent pipes and air inlets must terminate at the same
height to avoid possibility of severe personal injury,
death or substantial property damage.
2. Place wall penetrations to obtain minimum clearance as
shown in Figure36,page30 for U. S. installations. For Ca-
nadian installations, provide clearances required by Natural
Ga
s and Propane Installation Code,
CAN/CSA B149.1 or
B149.2 Installation Code and a ULCS636 compliant vent kit.
3. e air inlet of a Evergreen
®
boiler is part of a direct vent
connection. It is not classied as a forced air intake with
regard to spacing from adjacent boiler vents.
Figure34 INSTALLATIONSEQUENCE — Concentric
horizontal
Step1 Read and follow all instructions in this manual. DONOT
proceed with vent/air installation until you have
readpage19throughpage24.
See
notices at le.
Step2 Install the boiler in a location that allows proper routing of all
vent and air piping to the selected sidewall location.
Step3 Make sure the selected sidewall termination location complies
with Figure25,page23. (Multiple boiler concentric termina-
tions must also comply with Figure35,page30.)
Step4 Use only the vent materials listed in Figure24,page21. Pro-
vide pipe adapters where required.
Step5 Vent piping and air piping lengths must not exceed the values
shown in Figure23,page20.
Step6 Ensure proper clearance above grade or snowline. Keep vents/
air intake area clear of accumulating snow.
Step7 e concentric termination must be assembled and installed
before piping from the boiler to the termination.
Step8 Prepare the sidewall penetration — assemble the concentric
termination kit and secure the cover plates as instructed in
this section. Provide the supports indicated and mount the
termination assembly. See “Install termination — concentric
pipes” on page30.
See notices at le.
Step9 Install vent and air piping between the boiler and the concen-
tric vent/air termination. Slope horizontal piping downward
toward the boiler at least 1/4 inch per foot. See page38 for
general guidelines.
Step10 Install pipe supports every 5 feet on both the horizontal and
vertical runs.
See notices at le.
Step11 Install a hanger support within 6inches of any upturn in the
piping.
See notices at le.
USESWEEPELBOWSFORALLVENTAND
AIRPIPING — DO NOT use short radius elbows
for vent or air piping. Boiler performance could be
aected.
Part number 550-100-211/0122
– 29 –
220 /29 9/3 00 /39 9
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