Read and save these instructions. This guide should be kept by the installer.
ADVANCED ELECTRODE STEAM HUMIDIFIER
The HM750 is the most advanced residential steam
humidifier available and provides steady and reliable
humidification for a home. The humidifier is designed for
connection directly to a supply air duct for humidity on
demand. The humidifier may be directly mounted to the air
duct, or remotely from the air duct, with a steam hose
connecting the humidifier to a distributor nozzle installed
at the air duct.
Included in the Box
HM750 steam humidifier
Steam distributor nozzle
Rubber drain hose
LDPE water hose
Baffle (duct mount only)
Foam gasket (duct mount only)
Steam hose (wall mount only)
Fittings, hardware, and mounting template
Installation Instructions, 33-00289 (this document)
Annual Operation and Maintenance Reminder
Copper pipe (optional)
The HM750 is configured at the factory to operate under
most conditions without the need to change its
NOTE: Because the humidifier is factory configured for
optimal performance, Honeywell strongly
discourages changes to the configuration of the
humidifier not described in these instructions.
1. Ensure that available voltage and phase
corresponds with humidifier voltage and phase as
indicated on humidifier's specification label.
2. Ensure that the dedicated external fuse disconnect
is of sufficient size to handle the rated amps as
indicated on the specification label. Refer to local
3. Ensure sufficient clearances will be available as
described in the Location section on page 6.
4. If the humidifier will be wall mounted, ensure steam
lines can be routed to duct as described in the Steam
Line Instructions on page 7.