Daikin VRV Inverter K Series - Cooling Start Following Layup

SiE-05C Outline of Control
Functions PLUS Series 221
4.1.2 Cooling Start Following Layup
When starting for the first time after turning on the power, temporarily starts all outdoor units in order to
discharge refrigerant from the low pressure line and accumulator when outdoor temperature is low.
Outdoor Unit Operation During Cooling Accumulation Start
∗ EEV : Herein after we indicate EEV for Electronic expansion valve.
<In Case of Cooling
Only System>
Outdoor unit and function unit operation during cooling accumulation start
Soft start
1 minute elapses
Liquid discharged
from
accumulators of
all outdoor units
Liquid discharged
from
accumulators of
all outdoor units
• 4 minutes elapse
or
• Low pressure < 1k
or
• 3 minutes elapse
• Low pressure < 1k
Normal control
(k:kg/cm
2
)
(VF101)
1
2
3
1 2 3 (Initial settings)
INV
outdoor
unit
STD
outdoor
unit 1
STD
outdoor
unit 2
INV
outdoor
unit
STD
outdoor
unit 1
STD
outdoor
unit 2
INV
outdoor
unit
STD
outdoor
unit 1
STD
outdoor
unit 2
Compressor 48+OFF ON+OFF ON+OFF 48+OFF ON+OFF ON+OFF 48+OFF OFF OFF
Outdoor fan Control by high pressure H+ON
Outdoor EEV 2000PLS 2000PLS 2000PLS 2000PLS 2000PLS 2000PLS 2000PLS 0PLS 0PLS
Hot gas bypass ON ON ON ON OFF OFF ON OFF OFF
Hot gas bypass
for equalizing
pressure
OFF OFF OFF OFF OFF OFF OFF OFF OFF
Injection No1 Td safety
control
Td safety
control
Td safety
control
Td safety
control
Td safety
control
Td safety
control
Td safety
control
OFF OFF
No2 OFF OFF OFF OFF OFF OFF OFF OFF OFF
Oil contral
solenoid valve
OFF OFF OFF OFF OFF OFF OFF OFF OFF
1 2 3 (Initial settings)
INV
outdoor
unit
STD
outdoor
unit 1
STD
outdoor
unit 2
INV
outdoor
unit
STD
outdoor
unit 1
STD
outdoor
unit 2
INV
outdoor
unit
STD
outdoor
unit 1
STD
outdoor
unit 2
Compressor 48 + OFF ON + OFF ON + OFF 48 + OFF ON + OFF ON + OFF 48 + OFF OFF OFF
Outdoor fan Control by high pressure H ## ON
Hot gas bypass
for equalizing
pressure
OFF OFF OFF OFF OFF OFF OFF OFF OFF
Injection No.1 Td safety
control
Td safety
control
Td safety
control
Td safety
control
Td safety
control
Td safety
control
Td safety
control
OFF OFF
No.2 OFF OFF OFF OFF OFF OFF OFF OFF OFF
Oil contral
solenoid valve
OFF OFF OFF OFF OFF OFF OFF OFF OFF
Function unit’s
solenoid valve
Y5-ON Y6-ON Y7-ON Y5-ON Y6-OFF Y7-OFF Y5-ON Y6-OFF Y7-OFF
SI-05C.BOOK Page 221 Monday, November 6, 2000 4:13 PM
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