Hitachi FSG1 Series Technical Catalogue page 200

AVAILABLE OPTIONAL FUNCTIONS
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24. Power Supply ON/OFF 2 [@!
This function is utilized to start the unit operation again
automatically when the power supply is recovered after
the power failure over 2 seconds.
The standard unit is started operation again automatically
with all the same operating conditions such as operation
mode, etc. in case of the power failure within 2 seconds.
(The compressor unit is started operation again after
three minutes guard in addition to 2 seconds power
failure as a maximum.)
?
NOTE:
In case of power failure during the unit stoppage, the
unit is stopped after recovering the power supply.
25. Ventilation Mode
(Total Heat Exchange Model) [-
This function is utilized to set the ventilation mode of the
total heat exchanger.
The setting condition and the ventilatrion mode are as
shown below.
Setting
Ventilation Mode
Condition
00 Automatic Ventilation
Total Heat Exchanging
01
Ventilation
02 Bypass Ventilation
26. Increasing supply Air Volume
(Total Heat Exchange Model) [- - - - ]
This function is utilized to increase the supply air volume
with the one-step high tap of the fan motor for supply air
during operation of the total heat exchanger, make the
room pressure higher than the surrounded room with the
increased supply air volume and prevent polluted air and
smell from entering into the room.
The setting air flow model by remote control switch and
the actual air flow of the total heat exchanger when
setting this function are as shown below.
Setting Air Flow Mode by
Remote Control Switch
LOW
MED
HIGH
?
NOTE:
In case that the setting air flow mode by the remote
control switch is "HIGH", the air flow of the total heat
exchanger is "HIGH" even when this function is set.
@!]
@! @!
- - ] -
Contents
Selecting effective ventilation mode
(Total Heat Exchanging Ventilation or
Bypass Ventilation) for energy saving
by detecting the temperature difference
between the outdoor temperature and
the room temperature.
The Heat Exchanging is performed
continuously when the total Heat
Exchanger is operated.
The Heat Exchanging is not performed
continuously when the total Heat
Exchanger is operated.
Air Flow of Total Heat
Exchanger
MED
HIGH
HIGH
27. With Humidifier (Only Indication)
(Total Heat Exchanger Model) [-!
This function is utilized to control the total heat exchanger
with the humidifier. However, in case of the total heat
exchanger of SET-FREE, the humidifier is not attached.
Do not set this function. When this function is not set, the
control of the humidifier is not performed.
28. Precooling/Preheating Period
(Total Heat Exchange Model) [-"
This function is utilized to delay the start-up of the total
heat exchanger operation.
The setting condition and the delay period of operation
start-up are as shown below.
Setting Condition
00
01
02
29. Not Prepared
30. Automatic Setting for OFF Timer [.
This function is utilized to set the OFF timer function
automatically when the unit is started by the remote
control switch. During operation with the automatic OFF
timer setting function, the cancellation of the OFF timer
and the changing of the setting period for OFF timer can
not be performed. However, the OFF timer function is
cancelled when the unit is stopped.
When the unit is operated again after stoppage, the
setting period for OFF timer is the period set by the
optional setting.
The setting condition and the setting period for OFF timer
are as shown below.
Setting Condition
00
01
02
03
~
22
23
24
?
NOTE:
This function is cancelled when connecting with the
CS-NET, and 7-day Timer, controlled by Remote
Control.
31. Remote Control Main-Sub Setting [. . . . ]
This function is utilized when two remote control switches
are installed in one system.
Set one remote control switch to "Main", and another
remote control switch to "Sub"
-! -!] -!
-"]
-" -"
Delaying period of Operation
Start-up
0 minutes
30 minutes
60 minutes
. ]
. .
Setting Period for OFF Timer
Function Invalid
1 Hour
2 Hours
3 Hours
~
22 Hours
23 Hours
24 Hours