INSTALLATION OPERATING & MAINTENANCE MANUAL - Lennox

control interface dc50
CONTROL INTERFACES AND DISPLAYS
DC50 COMFORT DISPLAY
This is a remote controller for non-technical customer. This
display give information such as running mode status of the
fan, set point, % of fresh air and outside air temperature.
It can be used to set or change the scheduling of the
different time zones, the temperature set point, and the % of
fresh air for each zone. It also has the capacity to set a 3
hours override and to force the unoccupied mode for up to 7
days. It displays the real time clock and different faults
signals.
Keys
Set time
Main Screen
Actual
Fresh Air
Room Temp
Outdoor air
temperature
Time zone
settings
24.2°C ON
FA:20% DynFan:Auto
Out:40.0°C Z:A Cool
Back to main
Screen or
Cancel
"Override"
Dynamic
Set Point
Activated
Fan
status
24.2°C ON
FA:20% DynFan:Auto
Out:40.0°C Z:A Cool
Current
Time zone
Z:A
Z:B
Z:C
Uno
Ove
BMS
Increase a
value or go to
"Override
menu"
Change
field or
validate
Decrease a
value or go to
"Override
menu"
Fan auto
means that
fan will stop if
there is no
demand for
cooling or
heating.
Unit operating Mode
:
Cool or Heat
Override 3 hours :
From main screen press any of the two arrow keys as
shown bellow:
Main screen :
Override menu :
Override 3 hours
Room SP : 24.0°C
Mini FA : 20%
Unoc :
Valid go main
screen
24.2°C ON
FA:20% DynFan:Auto
Out:40.0°C Z:A Cool
Set unoccupied Period
Room SP : 24.0°C
Mini FA : 20%
Uno :M T W T F S S
Increase
Valid /
Go
next line
Decrease
It will revert back to main screen after 15 seconds, if no activity
Forced Unoccupied zone :
Select "unoc" in the override menu and validate
UP to 7 days unoccupied period (starting from current day).
Clock Menu :
+1 day unoccupied
Valid
-1 day unoccupied
From main screen press the clock key, the following menu
appears:
Back to Main
12 h 24
Thursday March 27
Increase
Valid
Decrease
IOM / ROOFTOP FLEXY Series -PROVISIONAL 0504 - E Page 7