Lennox icomfort Setup Manual page 13

setup tests
SYSTEM
Equipment Name
Filter 1 Timer
Selection
.
.
(various)
.
.
Dehumidification
Control Mode
Humidification
Control Mode
Figure 16. SYSTEM adjustment screen
Dehumidification Control Mode
Display Only
Basic
Precision
Humiditrol cancel
(or Auxiliary
Dehumidifier)
save
Figure 17. Selecting Dehumidification/Humidification mode
equipment HELP
(to adjust a setting, highlight
it, then press edit)
Current Value:
(Display Only)
edit
reset
back
Humidification Control Mode
Display Only
Basic
Precision
Dew Point Control cancel
save
HUMIDIFICATION modes
BASIC & PRECISION these modes allow user control of RH between
15 and 45%. These conditions must be met for either mode to operate:
S
humidification mode has been enabled, and
S
the unit is in HEAT mode, and
S
humidification demand exists (24V present at H), and
S
BASIC mode also requires heat demand exists (Y for HP heat, or W for
gas heat [W may be energized with G de−energized]).
DEW POINT CONTROL Dew point adjustment mode will change the
humidification setpoint based on the outdoor temperature and a user−de-
fined dew point adjustment setting.
DEHUMIDIFICATION modes
In BASIC mode, dehumidification occurs if these conditions are met and
signals are present at specific terminals:
S
dehumidification has been enabled on installer settings, and
S
the unit is in COOL mode, and
S
dehumidification demand exists (RH above setpoint), and
S
cooling demand exists (Y1 energized).
In PRECISION mode, dehumidification occurs if all BASIC conditions
are true, except cooling demand may or may not be present. Maximum
overcool from cooling set point is 2ºF.
HUMIDITROL or AUX. DEHUMIDIFIER mode requires:
S
outdoor sensor must be installed and setup
S
dehumidification has been enabled on installer settings, and
S
the unit is in COOL mode, (or if in AUTO, at least one thermostat cooling
call made prior to the dehumidification demand), and
S
a dehumidification demand exists (RH above setpoint), and
S
outdoor temp. below 95°F; indoor temp. above 65°F, and
S
for HUMIDITROL, Humiditrol comfort adjust parameters as follows:
MAX adj. − Indoor temp > 2°F above heating setpoint
MID adj. − Indoor temp >
MIN adj. − Indoor temp > 2°F below cooling setpoint
Page 13
Installer setup − Page 8 of 8
HEAT SETPOINT+COOL SETPOINT
2
icomfortt Touch Screen 7−Day Programmable Thermostat