Cooling Start Following Layup - Daikin VRV Inverter K Series Manual

SI-05C.BOOK Page 221 Monday, November 6, 2000 4:13 PM
SiE-05C
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
Compressor
Outdoor fan
Outdoor EEV
Hot gas bypass
Hot gas bypass
for equalizing
Injection
solenoid valve
∗ EEV : Herein after we indicate EEV for Electronic expansion valve.
<In Case of Cooling Outdoor unit and function unit operation during cooling accumulation start
Only System>
Compressor
Outdoor fan
Hot gas bypass
for equalizing
Injection No.1
solenoid valve
Function unit's
solenoid valve
Functions PLUS Series
1 minute elapses
Liquid discharged
Soft start
from
accumulators of
all outdoor units
1
1
INV STD STD
outdoor outdoor outdoor
unit unit 1 unit 2
48+OFF ON+OFF ON+OFF
Control by high pressure
2000PLS 2000PLS 2000PLS
ON ON
OFF OFF OFF
pressure
No1 Td safety Td safety Td safety
control control control
No2 OFF OFF OFF
Oil contral OFF OFF OFF
1
INV STD STD
outdoor outdoor outdoor
unit unit 1 unit 2
48 + OFF ON + OFF ON + OFF 48 + OFF ON + OFF ON + OFF 48 + OFF
Control by high pressure
OFF OFF OFF
pressure
Td safety Td safety Td safety
control control control
No.2 OFF OFF OFF
Oil contral OFF OFF OFF
Y5-ON Y6-ON Y7-ON
• 4 minutes elapse
or
• Low pressure < 1k
Liquid discharged
from
accumulators of
all outdoor units
2
2
INV STD STD
outdoor outdoor outdoor
unit unit 1 unit 2
48+OFF ON+OFF ON+OFF
2000PLS 2000PLS 2000PLS
ON ON OFF OFF
OFF OFF OFF
Td safety Td safety Td safety
control control control
OFF OFF OFF
OFF OFF OFF
2
INV STD STD
outdoor outdoor outdoor
unit unit 1 unit 2
OFF OFF OFF
Td safety Td safety Td safety
control control control
OFF OFF OFF
OFF OFF OFF
Y5-ON Y6-OFF Y7-OFF
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Outline of Control
2
(k:kg/cm )
• 3 minutes elapse
or
• Low pressure < 1k
Normal control
3
(VF101)
3 (Initial settings)
INV STD STD
outdoor outdoor outdoor
unit unit 1 unit 2
48+OFF OFF OFF
H+ON
2000PLS 0PLS 0PLS
ON OFF OFF
OFF OFF OFF
Td safety OFF OFF
control
OFF OFF OFF
OFF OFF OFF
3 (Initial settings)
INV STD STD
outdoor outdoor outdoor
unit unit 1 unit 2
OFF OFF
H ## ON
OFF OFF OFF
Td safety OFF OFF
control
OFF OFF OFF
OFF OFF OFF
Y5-ON Y6-OFF Y7-OFF
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