Instructions / Assembly
14
•
This appliance has been designed to be vented
with either 2" (50mm) or 3" (75mm) PVC or
CPVC pipe.
Do not exceed the following maximum vent lengths:
8.
Venting the Water Heater
WARNING
Be sure to do
CARBON MONOXIDE POISONING
Follow all vent system requirements in accordance with relevant local or state regulation,
or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI
Z233.1/NFPA 54 – latest edition, and in Canada, in accordance with the Natural Gas and
Propane Installation Code CSA B149.1 – latest edition.
• This is a Category IV appliance.
Only vent materials approved for use with
Category IV appliances should be used.
• Under normal conditions, this appliance will not
produce an exhaust ue temperature in excess
of 149°F (65°C) and schedule 40 PVC pipe
may be used as the vent material. If required by
local code, use schedule 40 or 80 CPVC. Refer
to page 16 for additional requirements.
• Make sure the vent system is gas tight and
will not leak.
• Support the vent pipe with hangers at regular
intervals as specied by these instructions or
the instructions of the vent manufacturer.
•
This appliance is suitable for Common Vent System.
To make a Common Vent System, optional
accessories are required. Contact Noritz
America at http://support.noritz.com/ or 1-866-
766-7489 for details.
•
The total vent length including horizontal & vertical
vent runs should be no less than 3' (0.9m).
•
Do not store hazardous or ammable 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 so as to prevent injury or
property damage.
• If snow is expected to accumulate, take care
the end of the pipe is not covered with snow
or hit by falling lumps of snow.
1. Continue to insert the Vent Pipe until it reaches to the
base of the unit Exhaust and Intake Flue.
(The Vent Pipe will be inserted approximately
2.3"(60mm).)
2. Secure the Vent Pipe by tightening the band using a
screwdriver
(The tightening torque shall be between 16 and 20 in lb.)
General Requirements
How to tighten the Vent Pipe
Maximum Vent Lengths
Clearances
PVC or CPVC has been approved for use on this
appliance with zero clearance to combustibles.
No. of Elbows
Max. Straight Vent Length*
8 N/A 60' (18.0m)
7 N/A 63' (18.9m)
6 12' (3.6m) 69' (20.7m)
5 18' (5.4m) 75' (22.5m)
4 27' (8.1m) 78' (23.4m)
3 36' (10.8m) 84' (25.2m)
2 42' (12.6m) 90' (27.0m)
1 51' (15.3m) 93' (27.9m)
Pipe diameter 2" (50mm) 3" (75mm)
Indoor Installation when using PVC/CPVC material
* Not including the termination
Refer to pages 20 for max. vent lengths
When using PVC Concentric Termination.
Exhaust and
Intake Flue
Vent Pipe
Screwdriver
-Flat head
-Box wrench(5/16")