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2-12
2.3 Set point of functional parts and protection devices
(
※
1) Mode selection
q
or
w
depends on the models.
(
※
2) When Return air (RS) is lower than –20˚C, defrost starts every 6 hours.
(
※
3) When "99" hours is selected, refer to on demand defrost in clause 2.5.3.
(
※
4) When Inside set point is –20.0˚C or Lower, In-range masking is 120min.
(
※
5) After the inside temperature falls to Inrange, if the temperature rises to Outrange, the defrost starts 30 minutes later.
Refer to Defrosting mode in clause 2.5.3
(
※
6) When dehumidification is ON in dehumidification mode, the setting figure may change between 900~2100kPa
automatically (Refer to "High Pressure Control" Page 2-27)
(
※
7) Refer to "Fuse Protection table" in section 7.12.
Current
Device name
Actuation
Set point
Detection method
Symbol
High-pressure switch
OFF
2400kPa (24.47kg/cm
2
)
High-pressure switch
HPS
ON
1900kPa (19.37kg/cm
2
)
Chilled mode
ON
–10.0°C to +30.0°C
Set point temperature
EC
Mode selection
q
(+14.0°F to +86.0°F)
※
1
Frozen mode
–30.0°C to –10.1°C
(–22.0°F to +13.8°F)
Chilled mode
ON
–3.0°C to +30.0°C
Set point temperature
EC
(+26.6°F to +86.0°F)
Mode selection
w
Partial frozen mode
–10.0°C to –3.1°C
※
1
(+14.0°F to +26.4°F)
Frozen mode
–30.0°C to –10.1°C
(–22.0°F to +13.8°F)
Delay
Fan
Change-over for Hi/Lo
ON
10 seconds
timer
After defrosting
60 seconds
Compressor At starting
3 seconds
Defrosting
Short
ON
4 hours
※
2
timer
Long
3, 6, 9, 12, 24 and 99 hours
※
3
Back-up
OFF
90 minutes
In-range masking
90 minutes
※
4
Out-range guard
ON
30 minutes
※
5
Defrosting termination set point
OFF
30˚C (86°F)
Evaporator outlet
EOS
Reset
tempertature sensor
15˚C (59°F)
Return air temperature
RS, DRS
sensor
High-pressure control for Condenser fan
OFF
800kPa (8.2kg/cm
2
)
High-pressure transducer
HPT
ON
1000kPa (10.2kg/cm
2
)
※
6
Discharge gas
Pull down
OFF
135˚C (275°F)
Discharge gas
DCHS
temperature
LPT>50kpa
Reset
After 3 minutes elapsed
temperature sensor
protection
LPT
≦
50kpa
OFF
128˚C (262°F)
set point
Reset
After 3 minutes elapsed
Overcurrent protection set point (Cutout)
OFF
26.0A
PT/CT board
CT2
Reset
After 3 minutes elapsed
Current control
Control
50Hz : 16.1A
PT/CT board
CT1
60Hz : 17.4A
High pressure control
Control
2300 to 2350 kPa
High pressure sensor
HPT
(23.5 to 24.0 kg/cm
2
)
Circuit breaker
OFF
30A
CB
Fuse
OFF
5A, 10A
※
7
Fu
Evaporator fan motor thermal protector
OFF
132˚C (270°F)
Condenser fan motor thermal protector
OFF
135˚C (275°F)
MTP
Compressor motor thermal protector
OFF
140˚C (284°F)
CTP
Fusible plug
–
95
〜
100˚C
Electronic
controller
Pressure
switch
Motor
Initiation
–
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