H8908A/B Humidistat;
H8908C/D Dehumidistat
APPLICATION
The H8908 family of low-voltage humidistats/
dehumidistats provide accurate control of whole
house humidifiers, dehumidifiers, and ventilators.
They have a snap-acting, dust-proof SPST switch and
can be mounted to a duct or wall.
Before Installing this Product...
1. Read these instructions carefully. Failure to fol-
low them could damage the product or cause a
hazardous condition.
2. Check the ratings given in the instructions and
on the product to make sure the product is suit-
able for your application.
3. Installer must be a trained, experienced service
technician.
CAUTION
Personal Injury Hazard.
Power supply can cause electrical shock.
Disconnect power supply before beginning
installation.
NOTE: The H8908 electrical connections are not
shared with the thermostat.
INSTALLATION INSTRUCTIONS
Fig. 1. H8908A,D control.
HOLE FOR WIRING
THE DUCT MOUNTING
INSTALLATIONS
Fig. 2. H8908B,C control.
M24726
CASE REMOVAL
SLOT
M13371
69-1341EF-09