– 14 –
Night Purge mode is active; no operation
1:00 A.M.
Outside
temperature 17°C/28°C
or more (within 24
hours)
Temperature monitoring
operation (5 minutes)
Indoor > 22°C
and
Indoor - Outdoor > 5°C
Night Purge operation
(By-pass ventilation)
55-minute stop
Night Purge
operating
Finish Night Purge
operation (Stop)
No
Yes
6:00 A.M.
No
No
No
No
Yes
Yes
Yes
Yes
The outdoor temperature (OA) setting can
be selected either 17°C or 28°C by using
Dip-Switch (SW2-7) in the Lossnay control
box. Refer to the remote controller instillation
manual for more information.
Using the Night Purge
Night purge operation is used in the summer to automatically ventilate a room
at night while the air conditioner is stopped, to discharge accumulated heat and
thereby reduce the air conditioning load the next morning.
If Night purge is enabled per the “Installation Manual” [5. Function Selection [5] (8)],
night purge operation will be performed based on the flowchart shown at right.
From 1:00 A.M. to 6:00 A.M, “Night Purge” indicator is shown on the screen (at 1).
21
• The fan speed will revert to the last setting before the Lossnay unit was
stopped.
• Night purge operation is terminated in any of the following conditions (1 to
4), and is not resumed until the start conditions of the next day are reached.
1 Between 6:00 and 0:59
2 When the operation is stopped between 1:00 and 6:00 with a deluxe remote
controller or system controller
3 When the operation is switched on or off between 1:00 and 6:00 by a
scheduled timer (Weekly timer)
4 When the operation is switched on or off between 1:00 and 6:00 by an air
conditioner, an external control input or a remote input
Note:
• Night purge can be performed when the clock use setting is ON (use clock) in
Function Selection.
• The Function Selector cannot be switched during Night purge operation. (“Locked”
2 will blink.)
• Night Purge cannot be used with the Simple timer.
• Night purge settings can be checked in the Function Selection mode.
• When more than one Lossnay units are running, the temperature is measured by
the main Lossnay.
• Night purge is not performed when “CENTRAL” is displayed.
• Do not use the night purge function if fog or heavy rain is expected.
Rain water may enter the unit during the night.
IB874HG8401e.indd14IB874HG8401e.indd14 2008/10/0912:34:002008/10/0912:34:00
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