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SiUS281811EA
Special Control
Part 4 Functions and Control
111
3.1.2 Startup Control in Heating
Outdoor unit
actuator
Electric Symbol
Pressure equalization
control prior to startup
Startup control
18/24
class
30/36/42/48
class
STEP 1
STEP 2
Compressor
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
M2F
From starting
Ta > 20°C (68°F): STEP 1
Ta
≤
20°C (68°F): OFF
STEP 8
STEP 8
Main electronic
expansion valve
Y1E
Y1E
0 pulse
0 pulse
0 pulse
Subcooling
electronic
expansion valve
—
Y3E
0 pulse
0 pulse
0 pulse
Four way valve
Y1S
Y1S
Holds
ON
ON
Hot gas bypass
valve
Y2S
—
OFF
OFF
OFF
Ending conditions
A lapse of 10 sec.
•
Pc – Pe < 0.3 MPa
(43.5 psi)
•
A lapse of 1 to 5 min.
OR
x
A lapse of 130 sec.
x
x
Pc > 2.70 MPa
(392 psi)
Pc – Pe > 0.39 MPa
(56.6 psi)
OR
Summary of Contents for SkyAir RZR-TA Series
Page 1: ...Service Manual Cooling Only 60 Hz Heat Pump 60 Hz RZR TA RZQ TA Series SiUS281811EA...
Page 202: ...SiUS281811EA 196 Part 6 Service Diagnosis 5 15 Fan Motor Connector Check for FTQ TA 311...
Page 323: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 317 RZR18 24TAVJUA RZQ18 24TAVJUA 3D124495...
Page 327: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 321 FHQ18 24 30PVJU FHQ36 42MVJU 3D048116C...
Page 328: ...Wiring Diagrams SiUS281811EA 322 Part 7 Appendix FAQ18 24TAVJU 3D114844B...
Page 329: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 323 FBQ18 24 30 36 42 48PVJU 3D065984J...