Williamson-Thermoflo FreeStyle 2 Series Manual page 16

FreeStyle
Series 2 wall mount gas-fired water boiler — Boiler Manual
6 Venting/air piping — general
Figure 20
Venting and air piping — DIRECT VENT ONLY
The table below lists the acceptable vent/air pipe terminations described in this manual. Follow all instructions provided to install the
vent/air system.
(Minimum length for all applications is 2 feet equivalent plus termination)
See Figure 21, page 17 for material specifications | See Figure 164, page 121 for part/kit numbers
Boilers will derate as vent/air pipe length increases —
SIDEWALL termination
Separate pipes
[Note 1]
See page 21
Size, Materials
inches Fig. 21, page 19
PVC/PVC-DWV
2
CPVC, PP, SS
80
PVC/PVC-DWV
3
CPVC, PP, SS
PVC/PVC-DWV
2
CPVC, PP, SS
120
PVC/PVC-DWV
3
CPVC, PP, SS
2
CPVC, PP, SS
155
PVC/PVC-DWV
3
CPVC, PP, SS
Equivalent feet for elbows (USE SWEEP ELBOWS ONLY) — deduct from max equivalent length of piping (does not apply to termination fittings).
If using stainless pipe, provide adapters for terminations, if required.
Note 1:
16
below, but also approved, are the polypropylene piping and terminations listed in Figure 21, page 17.
Maximum vent and air pipe length =
100 feet for all applications
Vent and air pipe sizes:
Maximum vent lengths apply for 3" vent and air pipe.
PVC or PP Concentric
[Note 1]
See page 23
Size, Materials
inches Fig. 21, page 19
PVC/PVC-DWV
2
CPVC, PP, SS
PVC/PVC-DWV
3
CPVC, PP, SS
PVC/PVC-DWV
2
CPVC, PP, SS
PVC/PVC-DWV
3
CPVC, PP, SS
2
--------
PVC/PVC-DWV
3
CPVC, PP, SS
continued
*
see Rating data on Figure 178, page 135 for derate amounts.
VERTICAL termination
Separate pipes PVC or PP Concentric
[Note 1]
See page 25
Size, Materials Size,
inches Fig. 21, page 19 inches
PVC/PVC-DWV
2 2
CPVC, PP, SS
PVC/PVC-DWV
3 3
CPVC, PP, SS
PVC/PVC-DWV
2 2
CPVC, PP, SS
PVC/PVC-DWV
3 3
CPVC, PP, SS
2 2
CPVC, PP, SS
PVC/PVC-DWV
3 3
CPVC, PP, SS
SWEEP
ELBOWS
ONLY
Vertical vent,
[Note 1] Side Air [Note 1]
See page 27 See page 29
Materials Size,
Fig. 21, page 19 inches
PVC/PVC-DWV
2
CPVC, PP, SS
PVC/PVC-DWV
3
CPVC, PP, SS
PVC/PVC-DWV
2
CPVC, PP, SS
PVC/PVC-DWV
3
CPVC, PP, SS
2
--------
PVC/PVC-DWV
3
CPVC, PP, SS
Part number 550-142-950/0919
USE
Materials
Fig. 21, page 19
PVC/PVC-DWV
CPVC, PP, SS
PVC/PVC-DWV
CPVC, PP, SS
PVC/PVC-DWV
CPVC, PP, SS
PVC/PVC-DWV
CPVC, PP, SS
CPVC, PP, SS
PVC/PVC-DWV
CPVC, PP, SS