Direct Exhaust - Vertical - Weil-McLain Evergreen 220 Instructions Manual

220/299/300/399
®
DIRECT EXHAUST — Vertical
Allowable vent/air pipe materials &
lengths
Use only the vent materials listed in
Figure 2, page 4. Provide pipe adapters if
specified.
1. Locate the termination such that the total vent pip-
ing from the boiler to the termination will not ex-
ceed the maximum length given in Figure 1, page 3.
Determine termination location
1. The vent terminations must be installed as shown
in Figure 7, page 10.
2. The terminations must comply with clearances and
limitations shown in Figure 3, page 5.
3. Locate the termination so it is not likely to be dam-
aged by foreign objects, such as stones or balls, or
subject to buildup of leaves or sediment.
Multiple vent/air terminations
1. Terminate each vent of multiple direct exhaust
Evergreen
®
boilers as described in this instruction
or the boiler manual for individual vents.
2. Space terminations as required for best installation
practices and required maintenance.
Prepare roof penetration
1. Vent pipe penetration:
a. Cut a hole for the vent pipe. For either com-
bustible or noncombustible construction, size
the vent pipe hole at least 0.5" larger than the
vent pipe diameter.
b. Hole diameter in the metal plates must be at
least 4" for PVC pipe. For AL29-4C vent pipe
and coupling (or elbow) — size hole 0.5" larger
than vent pipe outside diameter.
c. Insert a galvanized metal thimble in the vent
pipe hole.
2. Follow all local codes for isolation of vent pipe when
passing through floors, ceilings and roofs.
3. Provide flashing and sealing boots sized for the
vent pipe.
Where the vent penetrates the roof, the an-
nular space around the penetration must
be permanently sealed using approved
materials to prevent entry of combustion
products into the building.
10
– Instructions Direct Exhaust Venting
Figure 7
INSTALLATION SEqUENCE — Direct exhaust vertical
Step 1 Read and follow all instructions in this instruction.
proceed with vent/air installation until you have read
page 19 through page 25 in the boiler manual.
Install the boiler in a location that allows proper routing of
Step 2
all vent to the selected sidewall location.
Make sure the selected vertical termination location com-
Step 3
plies with Figure 3, page 5.
Use only the vent materials listed in Figure 2, page 4. Pro-
Step 4
vide pipe adapters where required. Vent piping lengths must
not exceed the values shown in Figure 1, page 2.
Prepare the vertical penetration and secure penetration
Step 5
components as instructed in this section. See "Prepare roof
penetrations" and "Termination and fittings" on page 9.
The vent piping must terminate in a coupling pointed up-
Step 6
ward as shown above.
Install vent piping between the boiler and the vertical termi-
Step 7
nation. 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
support within 6 inches of any upturn in the piping.
Maintain minimum clearance of
Step 8
pipe and any combustible wall or material.
Insert the vent piping through the vertical penetration and
Step 9
secure the termination coupling.
Step 10 Maintain clearances shown above. Vent terminations must
be fitted with a bird screen as shown.
DO NOT
inch between vent
3/16
Part number 550-100-156_0917