Installation Manual

MOUNTING
Whether you purchased a Bypass or Fan humidier will determine how your humidier will be installed:
Which humidier do you have?
Bypass:
Bypass humidiers use the pressure difference
between the supply and return to move duct
air through the humidier. Access to both the
supply and return are required. The bypass
humidier can be positioned on either the
supply or return duct.
MCR29871
Fan:
Fan humidiers use an internal fan to move duct
air through the humidier pad and back into the
duct for distribution throughout your home. The
fan model is commonly installed directly onto the
supply (hot) air duct of your HVAC system.
The fan model can be installed on the return
(cool) air duct, if the location permits. When
a return-side installation is used, it is highly
recommended to plumb warm water since
humidity is produced by evaporation.
MCR29929
Choosing a Mounting Method
Before beginning Mounting:
I have conrmed local codes for proper plumbing practices.
I have chosen an installation location that meets the requirements on page 4.
Humidier 69-2413EF—19
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