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Based on the indoor temperature, use the following table to
determine the control knob setting to reach the desired RH
value. The dehumidifier will work to achieve the values in
the following table:
%RH (± 5%) based on Control Knob Setting & Indoor Temp.
Control
Knob
Setting
Indoor Temperature (°F)
EXAMPLE:
At an indoor
temperature
of 75°F with
a dehumidi-
fier control
knob setting
of 3, the de-
humidifier
will work to
achieve an
RH value of
53%.
65
70
75
80
1
Less
84%
71%
60%
2
86%
73%
61%
52%
3
Normal
74%
63%
53%
45%
4
Normal
64%
54%
45%
39%
5
Normal
55%
46%
39%
33%
6
47%
39%
33%
28%
7
More
40%
34%
28%
24%
NOTE − %RH values are ±5% and are to be used as a GUIDE ONLY
for initial set−up. Indoor Temperature is measured at the inlet to the
HCWH-90/HCWH-135.
Setting the Air Cycle Period and Cycle Time
The air cycle period and cycle time are set during installa-
tion to meet the individual needs of your home. Detailed in-
structions are laid out in the dehumidifier installation manu-
al.
Outdoor Ventilation Option
If a Normally-Closed, Power-Open Damper was installed
in the HVAC outside air intake, it will open whenever air
cycling is active. This allows outside ventilation air to be in-
cluded into the air cycling of your indoor air.
Ventilation Control Limits
In a standard installation, your Healthy Climate
®
Dehumi-
difier will use measurements of outdoor temperature along
with the user adjustable time settings to determine when to
ventilate with outdoor air. The ventilation damper will not
bring in outside air if the outside temperature is above
100°F or below 0°F.
The ventilation damper will allow outside air to be brought
in when the temperature is between 20°F and 0°F only dur-
ing a heat call. In timed mode, outdoor air is taken based on
the time setting only, regardless of temperature.
Maintenance
CAUTION
Potential equipment malfunction or damage.
May require repairs and/or void warranty.
Do not use solvents/cleaners on or near the circuit
boards.
Air Filter
Under normal circumstances, the filter in the dehumidifier
should be cleaned or replaced once a year. A clean filter is
necessary to prevent damage to the dehumidifier and al-
low it to function at full capacity. To remove the filter, first
unplug or disconnect power to the dehumidifier, then re-
move the air filter via the access panel on the side of the
dehumidifier. To clean, flush with warm water and deter-
gent solution. After a clean or new filter is reinstalled, re-
place the access panel and reconnect power to the dehu-
midifier. The replacement filter for the dehumidifier is
catalog number Y2181 and is available from your installing
contractor or from most other HVAC contractors in your
area.
Reinsert the air filter and access door (catalog number
Y2181). Access door has a tab at the bottom that must be
inserted in the slot below the filter chamber.
FILTER ACCESS
DOOR (Y2182)
FILTER
(Y2181)
TAB ON BOTTOM END OF ACCESS
DOOR MATES IN SLOT ON HOUSING
Drain
The drain trap or outlet should be checked and cleaned of
debris annually by a qualified service professional.
NOTE: The drain trap needs to be primed with water prior
to start−up and after extended periods of unit shut down
(winter months).
10008387 03/09
B2204741A
