Bosch 520PN Applications Manual page 54

12 | Installation instructions
4.3.1 Vent material
All combustion air and vent pipe materials and fittings must comply with
the following:
Item Material
Vent or PVC schedule 40
air pipe
PVC-DWV
and
CPVC schedule 40
fitting
ABS-DWV schedule
Pipe PVC
cement
CPVC
/ primer
ABS
Table 5 Approved vent material
For specific questions concerning vent material, specifications,
usage or installation, please contact the vent manufacturer directly.
Do not use cellular foam core pipe.
All vent connections must be glued, except for the exhaust accessory
(chapter 4.3.4) which is screwed into place on the top of the
appliance. Slide the vent pipe into the exhaust accessory. The exhaust
pipe must be properly supported and must be pitched a minimum of a ¼
inch per foot back to the appliance. This allows the condensate to drain
properly.
An optional concentric vent/air intake termination can be used for the
installation of a vertical or horizontal venting system. (see fig. 8).
The concentric vent/air intake body can be ordered from your local
wholesaler. (Part# 196016).
The appliance can also be installed with separate air intake and exhaust
piping (see fig. 11, fig. 18 and fig. 19, page 19).
Description
3- In. Rain Cap
4- In. Diameter SDR-26 Pipe
3- In. Y
Concentric Fitting
2- ½ In. Diameter SDR-26 Pipe
3- In. Condensate drain Tee
1.5- In. Condensate drain bushing
Table 6 Concentric vent part breakdown
6 720 644 887 (2013/02)
United States Canada
ANSI/ASTM D1785 CSA or ULC
certified only
ANSI/ASTM D2665
(ULC-S636)
ANSI/ASTM F441
ANSI/ASTM D2661
ANSI/ASTM D2564
ANSI/ASTM F493
ANSI/ASTM D2235
Kit part no. and
Length quantity
196016
N/A 1
24 In. long 1
N/A 1
37-1/8 in. long 1
N/A 1
N/A 1
Fig. 8 Concentric vent kit example
[1] Exhaust
[2] Combustion air
[3] Roof boot/flashing (field supplied)
[4] Exhaust pipe
[5] Drain tee (196278)
[6] Intake pipe
[7] Concentric vent kit (196016)
[LA] Maintain 12 in. (18 in. for Canada) minimum clearance above
highest anticipated snow level maximum of 24 in. above roof
C 1210 ES/ESC