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Bosch C 950 Installation Manual page 12

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12 | Installation instructions
4.3.1
Vent options
The Greentherm are approved with the following venting options:
All combustion air and vent pipe materials and fittings must comply with
the following:
Item
Material
Vent
PP concentric single
or
PP common vent
air
PP twin pipe
pipe
PVC schedule 40
and
fitting
PVC-DWV
CPVC schedule 40
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.
Fig. 8
PP Concentric up and out system
The concentric up and out vent system simplifies installations where the
water heater is mounted on an outside wall that can be direct vented
through that wall. This vent system only consists of the concentric
appliance adapter, one 90° elbow, and the termination, and can not be
extended further.
Concentric up and out kit: Part# 7 738 003 210
The concentric up and out system must be installed according to the
respective Installation Manual.
All vent connections must be glued, except for the PP vent systems, and
the exhaust adapter (chapter 4.3.4) which is screwed into place on
the top of the appliance. Slide the vent pipe into the exhaust adapter.
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 when using PVC,
CPVC, or ABS (see fig. 9).
The concentric vent/air intake body can be ordered from your local
wholesaler. Part# 196016 (3"/6") and Part #196006 (3"/5").
The appliance can also be installed with separate air intake and exhaust
piping (see fig. 13, fig. 20 and fig. 21, page 19) in PP, PVC, CPVC, and
ABS. Generic PP twin pipe can be used if certified to ULC-S636 and only
6 720 805 440 (2014/11)
United States
Canada
ANSI/ASTM D1785
ANSI/ASTM D2665
ULC-S636
certified only
ANSI/ASTM F441
ANSI/ASTM D2661
ANSI/ASTM D2564
ANSI/ASTM F493
ANSI/ASTM D2235
with 90° elbow or T terminals. Maximum vent lengths and equivalent
lengths per tables 9 and 10 apply.
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 PVC concentric vent part breakdown
Fig. 9
Concentric vent kit example
[1]
Exhaust
[2]
Combustion air
[3]
Roof boot/flashing (field supplied)
[4]
Exhaust pipe
[5]
Drain tee (196061, included in concentric vent kits) as required.
See section 4.3.2.
[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
Kit part no. and
Length
quantity
196016
N/A
1
24 In. long
1
N/A
1
37-1/8 in.
1
long
N/A
1
N/A
1
Greentherm

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