Use and Care Manual

20
6.2.3 Termination Considerations
NOTE
• When adjusting the DIP switches
for longer vent runs, the Btu/h
input of the Water Heater will be
reduced by up to 9%.
• Do not change any other DIP
switches.
NOTE
Below are additional models
approved for use by Noritz and
supplied by IPEX. Refer to the IPEX
literature or web site for additional
details.
Maximum Vent Length Configurations (For PVC/
CPVC/PP material)
• The maximum vent length when using 2 in. (50
mm) pipe is 65 ft.
• The maximum vent length when using 3 in. (75
mm) pipe is 150 ft.
Both maximum lengths are reduced by the
number of elbows used, as shown in the following
table:
Vent
diameter
Maximum equivalent
vent length*
1
V (Vertical)
+
H (Horizontal)
Maximum #
of elbows*
2
Equivalent
length
2 in. 65 ft (20 m) 6
90° elbow:
5 ft (1.5 m)
3 in. 150 ft (46 m) 15
45° elbow:
3 ft (0.9 m)
*1 The maximum vent length includes elbows.
*2 Not including the termination.
• Check and confirm that there is no tension to
the flexible pipe by hanging or suspending of
anything.
• Check vent piping at least once a season. Verify
vent pipe connections to chimney are secure and
no obstructions are present. If vent piping shows
sign of leaking, replace it immediately.
• This Water Heater has been designed to be
vented with either 2 in. (50 mm) or 3 in. (75 mm)
PVC, CPVC, PP, or 3 in. (75 mm) flexible pipe for
chimney. If you use Flex Vent 2 in. Conversion Kit,
you must use 2 in. flexible PP.
• The minimum total vent length including
horizontal and vertical vent runs should not be
less than:
- PVC/CPVC/PP, 3 in. (75 mm) flexible pipe for
chimney: 3 ft (0.9 m)
- 2 in. flexible PP: 5 ft (1.5 m)
• The Water Heater can be adjusted to
accommodate longer vent runs; refer to the table
below. Do not exceed the maximum vent length.
• Disconnect the electrical power and then adjust
the DIP switches according to the vent condition
noted in the tables below.
Refer to page 56 for the location of the DIP switch
bank and how to change the DIP switches.
Failure to perform this step will result a “73” code
displayed on the Remote Controller and a cease
in operation.
If this occurs, disconnect, then reconnect the
electrical power to the Water Heater to reset the
system.
• Do not store hazardous or flammable substances
near the vent termination and check that the
termination is not blocked in any way.
• Steam or condensed water may come out from
the vent termination. Select the location for
the termination as to prevent injury or property
damage.
• If snow is expected to accumulate, make sure the
termination will not be covered with snow or hit
by falling lumps of snow.
• (For PVC/CPVC/PP material) A bird screen must
be installed on the vent terminations to prevent
debris or animals from entering the piping. These
screens are not supplied with the Water Heater
and must be purchased separately.
6.2.4 Maximum Vent Length
• The following termination can also be used.
- Termination Manufacturer: IPEX Management Inc.
- Item description
* Universal Concentric Vent Kit :
<USA> #397256 - PVC System 1738
<Canada> #196256 - PVC System 636
#197256 - CPVC System 636
** Low Profile Termination Kit :
<USA> #397984 - 2” PVC System 1738
#397985 - 3” PVC System 1738
<Canada> #196984 - 2” PVC System 636
#196985 - 3” PVC System 636
Vent Material Bird Screen Parts #
2 in. (50 mm) PVC or CPVC VT2-PVCS
3 in. (75 mm) PVC or CPVC VT3-PVCS
Centrotherm - 2 in. (50 mm) PP IASPP02
Centrotherm - 3 in. (75 mm) PP IASPP03
DuraVent - 2 in. (60 mm) PP 2PPS-BG
DuraVent - 3 in. (80 mm) PP 3PPS-BG
Item Item #
Universal Concentric Vent Kit (UCVK)*
(PVC ULC S636/UL 1738 - Certified for
use in both Canada and USA)
PVC-UCVK
(397007)
IPEX Low Profile Termination Kit**
(PVC ULC S636/UL 1738 - Certified
for use in both Canada and USA)
2 in.
PVC-2LPT
(397100)
3 in.
PVC-3LPT
(397101)
Venting the Water Heater