Noritz EZ98DV - Vent Types and Installation Methods

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This Water Heater is suitable for Common vent
System. To make a Common Vent System, contact
Noritz America at 1-866-766-7489 or
scan the following two-dimensional
barcode and then refer to the
Common Vent Installation Manual for
detail information.
Common Vent
Combustion
air
Exhaust
Increasers are required when using 3 in. flexible pipe.
3 in. Elbow
ISIS0203
(Centrotherm®)
H
V
Slope the Vents
Upward
Slope the Vents
Upward
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)
Combustion air is
supplied from the
surrounding indoor air.
Combustion
air
Exhaust
Non-Direct Vent (with Flex Vent 2 in. Conversion
Kit EZ2-CK)
The Water Heater can
be installed outside
using the Outdoor Vent
Cap (VC-6).
Combustion
air
Exhaust
Outdoor (with Outdoor Vent Cap VC-6)
Exhaust gasses and
combustion air must not
be combined into a single
PVC pipe using a “Y”
fitting.
WARNING
Combustion
air
Exhaust
Single
Pipe
Venting the Water Heater