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DEHUMIDISTAT
Dehumidistat (99-DH01) Operation:
(1) Dehumidistat Adjust Button
(2) Dehumidistat LEDs
Press the Dehumidistat Adjust Button to set the Dehumidistat to the desired humidity
level. The Dehumidistat LEDs will indicate the set point. High speed ventilation will
initiate when the indoor moisture level exceeds the set point on the control. Once the
humidity in the house is reduced, the HRV will revert back to its previous setting.
The dehumidistat should be set to OFF for all seasons except the heating season.
Dehumidistat (99-DH01) Installation:
The dehumidistat may be installed onto a flush mounted 2” x 4” electrical switch box or it may be surface mounted onto a
wall. Only one main control should be installed into a ventilation system.
1. Remove the operating instructions card
from the top of the control (figure A).
2. Carefully separate the face plate and the
back plate by firmly pulling it apart (figure
B).
3. Position the back plate of the control in the
desired location on the wall and mark the
wall for the top and bottom screw holes
(figure C)
4. Remove the back plate from the wall and
mark the hole for the wires centered
between the two screw holes (figure C).
5. Drill two 1/8 in. holes for the screws and
wall anchors and drill one 3/8 in. hole for
the wires.
6. Pull 3 wire 20 gauge (min.) 100 ft length
(max.), through the opening in the wall.
7. Connect the wires to the R, G, and Y
terminals on the back plate (figure C).
8. Using the two supplied screws and
anchors, install the back plate on the wall.
9. Attach the face plate to the back plate
(figure B).
10. Connect the 3 wire 20 gauge (min.), 100 ft
length (max.), to the RED, GRN, and YEL
terminal on the Digital Controls terminal
strip on the Aircom circuit board (figure D).
Use care when separating or attaching the face plate to avoid damaging the contact pins.
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