Midea Aqua thermal Super Series User Manual

Aqua thermal Super
21
Part 3 - Control
5 Normal Operation Control
5.1 Component Control during heating mode
Component
Wiring
diagram
label
65/75kW
110/140kW
Control functions and states
Water pump
PUMP
●
●
Open
Inverter compressor
1
BP1
●
●
Control the outlet water temperature. The operating
increased and decreased frequency is 1Hz/s.
Inverter compressor
2
BP2
●
●
Inverter fan1
FAN1
●
●
Startup after 4-way valve changes refrigerant flow direction.
Controlled according to ambient temperature, discharge
pressure and compressor frequency.
Inverter fan 2
FAN2
●
●
Electronic expansion
valve
EXV-A
●
●
Step from 0 to 480. Controlled according to discharge
temperature superheat.
Electronic expansion
valve
EXV-B
●
●
Step 480.
Electronic expansion
valve
EXV-C
●
●
Enhanced vapor injection EXV ， Step from 0 to 480.
Controlled according to temperature difference between
economizer plate heat exchanger inlet and outlet.
Four-way valve
ST1
●
●
Open
S valveolenoid
(defrost)
SV5
●
●
Open during defrost and close at other times.
S (byvalveolenoid
pass)
SV6
●
●
Closed
valveSolenoid
(injection)
SV8A/B
●
●
Open
Switching of
heating/hot water
production
Solenoid three way
valve
SV1
●
●
Turn on when making hot water
Component
diagramWiring
label
65/75kW
110/140kW
Control functions and states
Water pump
PUMP
●
●
Open
Inverter compressor 1
BP1
●
●
Control the outlet water temperature. The
operating increased and decreased frequency
is 1Hz/s.
Inverter compressor 2
BP2
●
●
Inverter fan1
FAN1
●
●
Control according to the exhaust pressure of
the outdoor unit. Correct every 20-60s, and
adjust in 0-32 gears.
Inverter fan 2
FAN2
●
●
E expansionlectronic
valve
EXV-A
●
●
Step 480.
E expansionlectronic
valve
EXV-B
●
●
Step from 0 to 480. Controlled according to
discharge temperature superheat.
MBT Confidential
5.2 Component control during cooling mode

Midea Aqua thermal Super Series Specifications

General

Brand	Midea
Model	Aqua thermal Super Series
Category	Heat Pump
Language	English