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Outline of Functions (Outdoor unit)
SiBE811001EB
83
CONVENI-PACK
(3)-3 Redundant refrigerant recovery-3: Avoids running out of gas due to accumulation of refrigerant in the indoor
heat exchanger during partial Heat Recovery operation.
Emergency correspondence is capable of the above steps with service mode 2 - 20 setting to be set 1 - 3.
(Factory setting)
Detects accumulation of liquid in the indoor unit, opens EV of indoor unit as well as closing Y1E
of outdoor unit, then returns liquid refrigerant to receiver.
Set-1: Detects accumulation of liquid in the indoor unit, or opens the indoor unit EV as well as closing the
outdoor unit Y1E every 30 minutes, then returns liquid refrigerant to the receiver.
Set-2: Detects accumulation of liquid in the indoor unit, or opens the indoor unit EV as well as closing the
outdoor unit Y1E for every 30 minutes, then returns liquid refrigerant to the receiver. Notwithstanding the
fact that liquid discharge is insufficient, switchover the four way valve-B. Switchover to 64
⇔
74, 65
⇔
75,
70
⇔
80
Set-3: Forcibly switchover the operation mode. Switchover to 64
⇔
74, 65
⇔
75, 70
⇔
80 (for every 30 minutes).
<Factory setting ··· 2-20: OFF>
<2-20: Set 1>
Forcibly conducts refrigerant recovery with outdoor Y1E and indoor EV when more than 30 minutes of partial Heat
Recovery operation have been accumulated
<2-20: Set 2>
Forcibly conducts refrigerant recovery with outdoor Y1E and indoor EV when more than 30 minutes of partial Heat
Recovery operation have been accumulated but if the refrigerant recovery is insufficient, conducts refrigerant recovery
with four way valve-B
•
Operation mode:
74, 75, 80
Redundant refrigerant
recovery 3 by EV
• Outdoor unit fan:
Minimum
• Outdoor Y1E: Closing
• SV1: OFF
• Indoor EV: Fully open
• SV0: ON
&
OR
Tc: Condensing temperature calculated from high
pressure
R2T: Indoor liquid pipe thermistor
R3T: Indoor gas pipe thermistor
• Opening degree of EV of all indoor units > 0 pls
• Tc - Max(R3T) > 2˚C continues for consecutive 20 minutes or more.
• HP < 2.94MPa
• Tc-Min(R2T) < 5˚C continues for consecutive 2 minutes or more.
• Condition formation of indoor liquid discharge continues for
more than 3 minutes
• HP > 2.94MPa
• Operation mode:
74, 75, 80
Redundant refrigerant
recovery 3 by EV
• Outdoor unit fan:
Minimum
• Outdoor Y1E: Closing
• SV1: OFF
• Indoor EV: Fully open
• SV0: ON
OR
• HP < 2.94MPa
&
&
OR
• Opening degree of EV of all indoor units > 0 pls
• Tc - Max(R3T) > 2˚C continues for consecutive 20 minutes or more
R2T: Indoor gas pipe temperature
R3T: Indoor liquid pipe temperature
• Operation mode = 74, 75, 80 more than 30 minutes have been
accumulated
• Tc - Min(R2T) < 5˚C continues for consecutive 2 minutes or more
• Condition formation of indoor liquid discharge continues for more
than 3 minutes
• HP > 2.94MPa
&
OR
• HP < 2.94MPa
&
OR
&
• Operation mode:
74, 75, 80
Redundant refrigerant
recovery 3 by four way valve B
Operation mode: 64, 65, 70
Redundant refrigerant
recovery 3 by EV
• Outdoor unit fan:
Minimum
• Outdoor Y1E: Closing
• SV1: OFF
• Indoor EV: Fully open
• SV0: ON
• Opening degree of EV of all indoor units>0 pls
• Tc - Max(R3T) > 2˚C continues for consecutive 20 minutes or more
• Opening degree of EV of all indoor units > 0 pls
• Tc - Max(R3T) > 2˚C continues for consecutive
15 minutes or more
• HP < 2.94MPa
• Operation mode = 74, 75, 80 more than
30 minutes have been accumulated
• Tc-Min(R2T) < 5˚C continues for
consecutive 2 minutes or more
• Condition formation of indoor
liquid discharge continues for more than 3 minutes
• HP > 2.94MPa