Installation Guide

20
6.3 Select a Vent Type
Combustion air is
supplied from the
outdoors. Combustion
air and exhaust are
seperate vent pipes.
Combustion
air
Exhaust
Direct Vent
Combustion air is
supplied from the
surrounding indoor air.
Combustion
air
Exhaust
Non-Direct Vent (with SV Conversion Kit SV-CK-2)
The Water Heater can be
installed outside using
the Outdoor Vent Cap
(VC-6).
Combustion
air
Exhaust
Outdoor (with Outdoor Vent Cap VC-6)
This Water Heater is suitable for Common Vent
System. To make a Common Vent System, refer to
the Common Vent installation manual or contact
Noritz America at http://support.noritz.com/ or
1-866-766-7489 for details.
Common Vent
Combustion
air
Exhaust
Exhaust gasses and
combustion air must not
be combined into a single
PVC pipe using a “Y”
fitting.
WARNING
Combustion
air
Exhaust
Single
Pipe
Step 3:
Number of elbows
90° elbows: 2
45° elbows: 2
Step 4:
Calculate equivalent length
90° elbows: 2 × 5 ft = 10 ft
45° elbows: 2 × 3 ft = 6 ft
Step 5:
Total vent length
(Add Step 2 and Step 4 together)
17 ft + 16 ft = 33 ft
Step 6:
Check [DIP Switch Adjustment] and select DIP
switch settings.
②[33 ft or more using 2 in. (50 mm) pipe]
(i.e., turn ON DIP switch #7)
Venting the Water Heater