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iN401 - iN501 Air
Intake
Inlet
and
Exhaust
Gas
Outlet
Pipe
Connections
May
2019
-
Revision
00
7.4.2 Multiple Units
When installing multiple units, refer to “7.6 Intake Air Inlet
and Exhaust Gas Outlet Pipe Diameter and Length” on page
24.
Connecting multiple units together requires proper sizing of
the air intake inlet and exhaust gas outlet pipes. Up to four
water heaters can be connected (cascading) together. Units
which share a common vent must be connected together in
a cascading configuration, as described in “13. Connecting
Multiple Units” on page 48
Decommisioined
Air Intake and Gas Exhaust
Intake
Air
Intake
Air
Intake
Air
Intake
Air
Intake
Air
Intake
Air
Exhaust
Exhaust
Exhaust