Bosch C 950 Installation And Operation Instruction Manual page 16

Installation instructions
NOTICE:
▶ In areas where outside temperatures routinely come close
to freezing, sealed combustion operation is required.
Concentric termination or separate terminations for
combustion and vent, must be installed on the same wall or
roof surface; however, never facing the direction of
prevailing winds. Failure to do so may result in heat
exchanger freezing and bursting. This failure is not covered
under the manufacturer's warranty.
WARNING:
Appliance malfunction!
▶ Protect the exhaust and inlet from leaves and debris by
installing a screen on the end of the termination. ¼" mesh
minimum opening recommended on screen.
4.3.1 Vent options
This appliance can be installed as direct vent or Category IV.
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
or single
air
PP common vent
pipe
PP twin pipe
and
PVC schedule 40
fitting
PVC-DWV
CPVC schedule 40 ANSI/ASTM F441
ABS-DWV
schedule 40
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.
16
United States Canada
ULC-
S636
certified
only
ANSI/ASTM D1785
ANSI/ASTM D2665
ANSI/ASTM D2661
ANSI/ASTM D2564
ANSI/ASTM F493
ANSI/ASTM D2235
The use of cellular core PVC (ASTM F891), cellular core CPVC,
or Radel® (polyphenolsulfone) in non-metallic venting systems
is prohibited.
Covering non-metallic vent pipe and fittings with thermal
insulation is prohibited.
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, 20 and 21, page 29) in PP, PVC,
CPVC, and ABS. Generic PP twin pipe can be used if certified to
ULC-S636 and only with 90° elbow or T terminals. Maximum
vent lengths and equivalent lengths per tables 9 and 10 apply.
C 950/C 1050 (Pro TL 175 C/199 C) – 6 720 805 440 (2019/10)