Owner's manual

CONTRACTOR
Page 23
19. Installing and Connecting the Humidistat
19.1 See wiring diagrams in section 21 for proper connection. If you are using an ACU-STEAM electronic
humidistat with outdoor sensor please refer to the instructions included with the humidistat. If you decide to
use a standard mechanical humidistat, connect the mechanical humidistat between the terminals marked GND
(ground) & IN (input) on the humidifi er electronic board.