Daikin VRV IV-S RXTQ-TAVJU Series, Руководство по обслуживанию

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SiUS331604E Special Control
Functions and Control 38
3.1.2 Startup Control in Heating Operation
Thermostat ON
Outdoor unit
actuator
Electric symbol
Pressure equalization control
prior to startup
Startup control
RXTQ36
TAVJU
RXTQ48
TAVJU
RXTQ60
TAVJU
STEP 1 STEP 2
Compressor M1C M1C M1C 0 Hz Minimum frequency
Increases 2 steps every 20 seconds
from minimum frequency
until Pc – Pe > 0.39 MPa
(56.6 psi) is achieved
Outdoor fan M1F M1F
M1F,
M2F
From starting
Ta > 20
°
C (68
°
F): STEP 1
Ta
≤
20
°
C (68
°
F): OFF
STEP 8 STEP 8
Four way valve Y1S Y1S Y1S Holds ON ON
Main electronic
expansion valve
Y1E Y1E Y1E 0 pulse 0 pulse 0 pulse
Subcooling
electronic
expansion valve
 
Y3E 0 pulse 0 pulse 0 pulse
Hot gas bypass
valve
Y2S
 
OFF OFF OFF
Ending conditions
•
Pc – Pe < 0.3 MPa
(43.5 psi)
•
A lapse of 1 to 5 min.
A lapse of 10 sec.
•
A lapse of 130 sec.
•
Pc > 2.70 MPa
(392 psi)
•
Pc – Pe > 0.39 MPa
(56.6 psi)
OR
OR