SiBE811001EB
Field Setting
CONVENI-PACK
108
(5) Setting method of the target evaporating temperature
The target evaporating temperature is calculated as follows:
Tst:
Target evaporating temperature
Tsd:
Evaporating temperature set by the DIP switch
Tsp1: Temperature correction setting 1 set by the BS button
Tsp2: Temperature correction setting 2 set by the BS button
Tsn: Temperature correction setting during night-time operation
f(Ta):
Equivalent saturation temperature equivalent from the outdoor air temperature
The suction pressure equivalent saturation temperature can be set using the DIP switch and BS button on PCB.
The setting range of the DIP switch is given in the table below and can be set in increments of 5°C.
Note, conditions such as a low outdoor air temperature may cause the evaporating temperature to fall below the preset.
(This is normal and is done to protect the compressor.)
The BS button allows you to change the evaporating temperature set at the DIP switch within a range of -4K to +4K, in
1K-increments. This can also be used to adjust for suction pressure loss based on the frequency. For setting
procedures, refer to the pages after this page.
Do not set the target evaporating temperature to
-
20°C or less. (Doing so may damage the compressor or cause cooling
failures.)
(6) Setting transmission-less
Use this switch when there are no units for D-III indoor-outdoor (F1, F2) transmission connected. (Units for D-III Indoor-
Outdoor (F1, F2) transmission: air-conditioner indoor unit, booster unit, Qup unit)
Main DS1
Tsd (Lpm1)
Main DS1
Tsd (Lpm1)
-10°C
(0.47MPa)
0°C
(0.69MPa)
-20°C
(0.29MPa)
5°C
(0.82MPa)
-15°C
(0.37MPa)
10°C
(0.98MPa)
-5°C
(0.56MPa)
Tsd: Evaporating temperature set by the
DIP switch
Transmission-less setting
(DS2-1)
Caution!)
• Be sure to turn the power OFF before changing the settings.
• Be sure to set this switch to the OFF setting when D-III indoor-outdoor (F1, F2) transmission
unit is connected.
Main DS2
Transmission-less setting
is released (normal)
Main DS2
Transmission-less setting
Tst - Min (Tsd + Tsp1+ Tsp2 + Tsn, f(Ta))
ON
OFF
1
(Factory setting)
2
3 4
ON
OFF
1
2
3 4
ON
OFF
1
2
3 4
ON
OFF
1
2
3 4
ON
OFF
1
2
3 4
ON
OFF
1
2
3 4
ON
OFF
1
2
3 4
ON
OFF
1
2
3 4
ON
OFF
1
2
3 4