Vent And Air Piping And Boiler Connections - Weil-McLain EcoTec 80 Manual

G -
®
ECO Tec
AS FIRED WATER BOILER

Vent and air piping and boiler connections

Follow termination instructions
1. Read and follow all instructions for the termination type used
before proceeding with this page. Follow all instructions provided
by vent pipe manufacturer.
Use only materials from the manufacturers listed in
Figure 27, page 23 .
Installing vent and air piping
For polypropylene applications, see venting and air piping
notes on page 21 .
For AL29-4C vent pipe applications, See venting and air
piping notes on page 21 .
1. Work from the boiler to vent or air termination. Do not exceed the
lengths given in the previous pages for either the air or vent piping.
2. See Figure 30 for attaching vent (and air) pipes at the boiler.
Connections must be 3" PVC or CPVC only — use transitions if
needed to adapt to other material or size (2").
3. Cut pipe to required lengths.
4. Dry assemble entire vent or air piping to ensure proper fi t before
assembling any joint.
5. Maintain minimum clearance of
any combustible wall or material.
6. Seal wall or floor penetration openings following local code
requirements.
7. Assembling PVC or CPVC: (
manufacturer's instructions for preparation and assembly)
a. Deburr inside and outside of pipe ends.
b. Chamfer outside of each pipe end to ensure even cement
distribution when joining.
c. Clean all pipe ends and fi ttings. Dry thoroughly.
d. For each joint:
Handle fi ttings and pipes carefully to prevent contamination
of surfaces.
Apply primer liberally to both joint surfaces — pipe end
and fi tting socket.
While primer is still damp, lightly apply approved cement
to both surfaces in a uniform coating.
Apply a second coat to both surfaces. Avoid using too much
cement on sockets to prevent cement buildup inside.
With cement still wet, insert pipe into fi tting, twisting ¼
turn. Make sure pipe is fully inserted.
Wipe excess cement from joint. Check joint to be sure a
smooth bead of cement shows around the entire joint.
Part number 550-100-260/0520
–
80/110/150/199
/ inch between vent pipe and
3 16
— follow pipe
B M
OILER
Boiler vent and air connections
— Use Adapters if using other
than 3" PVC, CPVC, SS (Simpson-Duravent
only) and PP (Simpson-Duravent &
Centrotherm).
1. Use only 3" PVC, CPVC, SS(Simpson-Duravent
only) and PP (Simpson-Duravent & Centrotherm)
pipe at boiler connection.
2. Clean and deburr inside and outside of both ends of air
and vent pipes. Chamfer boiler end of vent pipe for ease of
insertion.
The vent pipe end must be smooth and chamfered
to prevent possible damage to sealing gasket in vent
pipe adapter.
3. Inspect vent or air adapter (above) — verify no obstructions
or foreign objects inside.
4. Loosen clamp screw.
5. Measure: PVC or CPVC = 2-
PP
Duravent SS = 4-
from end of pipe and make a mark with felt-tip pen.
6. Loosen adapter clamp screw.
7. Apply small amount of silicon grease to end of pipe to ease
insertion.
8. Insert pipe into adapter.
9. Slide pipe down until the mark is reached.
Do not apply excessive force or bend the adapter
or fl ue/air pipe when inserting. The adapter or seal
could be damaged. If any portion of the vent or air
system is damaged, it must be replaced.
10. Secure vent or air pipe by tightening the adapter clamp
securely. Do not overtighten.
11. The seal is accomplished with the internal gasket. The clamp
is only to hold the pipe in place.
use short radius elbows for vent or air
piping. Boiler performance could be
affected.
ANUAL
" or
1/4
= 3-½" or
"
3/4
— DO NOT
27