Weil-McLain Evergreen EVG 220 Manual page 20

®
gas
Venting & air — general
Figure 23 Evergreen venting and air piping — DIRECT VENT ONLY — OPTIONS and PIPING LIMITS
®
The table below lists the acceptable vent/air pipe terminations described in this manual. Follow all instructions provided to install the
vent/air system.
For these applications, use ONLY the manufacturers' parts listed and follow all instructions provided by the pipe manufacturer.
Maximum vent and air pipe length = 100 feet for all applications
(Minimum length for all applications is 2 feet equivalent plus termination)
(All applications include allowance for the termination fittings plus one elbow in air piping and one elbow in vent piping).
See Figure 24, page 21 for material specifications | See Figure 111, page 117 for part/kit numbers
If using 3" pipe, provide 4"x 3" tapered reducers at boiler connections and at Weil-McLain vent/air cap or at concentric terminations.
Boilers will derate as vent/air pipe length increases — see rating data on Figure 123, page 129 for derate amounts.
Weil-McLain
vent/air plate
[Note 1 & 2]
See page 27
Size, Materials
inches page 21
PVC/PVC-DWV
3
CPVC, PP
220
PVC/PVC-DWV
4
CPVC, PP
PVC/PVC-DWV
299/300
4
CPVC, PP
PVC/PVC-DWV
399
4
CPVC, PP
All elbows in vent and air piping must be sweep elbows ONLY. DO NOT use short-radius elbows.
When transitioning to 4-inch to 3-inch, use tapered reducer with 4" PVC nipple (l
to 3-inch bushing. Bushing will Not seal in boiler adapter.
Equivalent feet for elbows (USE SWEEP ELBOWS ONLY) — deduct from max. equivalent length of piping (does not apply to termination fittings).
PVC • 7 feet per for each additional 90° sweep elbow or 45° elbow — If piping contains more than 1 elbow in air or vent piping, other than termination fittings.
PP • Centrotherm 3" = 6'
Material abbreviations: PP = polypropylene, SS = AL29-4C stainless steel
If using polypropylene or stainless pipe, provide adapters for 4" boiler connections and for terminations, if required IPEX PVC concentric
vent kits can be used with standard PVC pipe, fittings and cement (ANSI/ASTM D1785) except if ULC S636 compliance is required. For
Note 1
ULC S636 compliance, all pipe, fittings and cement must be IPEX System 636. If using IPEX kits, use only IPEX product code listed in
Figure 111, page 117.
Contact Weil-McLain for ordering information and availability of Weil-McLain venting kits.
Note 2
Use only Weil-Mclain approved termination kits listed in Figure 111, page 117.
– 20 –
-
fired water boiler
NOT SHOWN below, but also approved, are the polypropylene piping and terminations listed in Figure 24, page 21.
Maximum vent lengths apply for either 3" or 4" vent and air pipe.
SIDEWALL termination
Separate pipes PVC Concentric
[Note 1]
See page 25
Size, Materials Size,
inches page 21 inches
PVC/PVC-DWV
3 3
CPVC, PP, SS
PVC/PVC-DWV
4 4
CPVC, PP, SS
PVC/PVC-DWV
4 4
CPVC, PP, SS
PVC/PVC-DWV
4 4
CPVC, PP, SS
4" = 20'
— 220/299/300/399 Boiler Manual
(continued)
Vent and air pipe sizes:
Separate pipes
[Note 1 & 2] [Note 1]
See page 29 See page 31
Materials Size, Materials
page 21 inches page 21
PVC/PVC-DWV PVC/PVC-DWV
3
CPVC CPVC, PP, SS
PVC/PVC-DWV PVC/PVC-DWV
4
CPVC CPVC, PP, SS
PVC/PVC-DWV PVC/PVC-DWV
4
CPVC CPVC, PP, SS
PVC/PVC-DWV PVC/PVC-DWV
4
CPVC CPVC, PP, SS
Duravent 3" = 17'
USE SWEEP
VERTICAL termination
PVC or PP Concen-
tric
[Note 1 & 2]
See page 33
Size, Materials Size,
inches page 21 inches
PVC/PVC-DWV
3 3
CPVC, PP
PVC/PVC-DWV
4 4
CPVC, PP
PVC/PVC-DWV
4 4
CPVC, PP
PVC/PVC-DWV
4 4
CPVC, PP
≥ 6")
. Do not use 4-inch
4" = 22'
Part number 550-100-131/0120
ELBOWS
ONLY
Vertical vent/
Sidewall air
[Note 1]
See page 33
Materials
page 21
PVC/PVC-DWV
CPVC, PP, SS
PVC/PVC-DWV
CPVC, PP, SS
PVC/PVC-DWV
CPVC, PP, SS
PVC/PVC-DWV
CPVC, PP, SS