Midea MC-SU30-RN1L

Aqua Tempo Super II
201709 19
Part 3
- Control
4.3 Startup Control for Heating Operation
Table 3-4.1: Component control during startup in heating mode
Component
Wiring diagram
label
30kW
60kW
Control functions and states
Inverter compressor A
COMP A
●
●
Compressor startup program selected according to
ambient temperature and discharge temperature
1
Inverter compressor B
COMP B
●
DC fan motor A
FAN A
●
●
Controlled according to ambient temperature
DC fan motor B
FAN B
●
Electronic expansion valve
EXV 1
●
●
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to outdoor ambient
temperature, unit capacity.
Four-way valve
STF1
●
●
On after the compressor startup for 10s
Solenoid valve (oil balance)
SV4_1
●
●
Closed for 200s, open for 600s, then closed
Water pump1
PUPM1
●
●
On
Water pump2
PUPM2
●
●
Water side heat exchanger heater 1
EVA-HEAT 1
●
●
According to water side heat exchanger
anti-freezing temperature (Taf)
Water side heat exchanger heater 2
EVA-HEAT 2
●
Water flow switch heater
W-HEAT1
●
●
Controlled according to ambient temperature, water
inlet temperature and water outlet temperature
Electric auxiliary heater
E-HEAT_L/
E-HEAT_N
●
●
Controlled according to ambient temperature and
total water outlet temperature after the compressor
is on
Crank case heater 1
HEAT1
●
●
Controlled according to ambient temperature and
discharge temperature
Crank case heater 2
HEAT2
●
Notes:
1. Refer to Figure 3-4.1, Figure 3-4.2 and in Part 3, 4.2 “Compressor Startup Program”.
4.4 Startup Control for Cooling Operation
Table 3-4.2: Component control during startup in cooling mode
Component
Wiring diagram
label
30kW
60kW
Control functions and states
Inverter compressor A
COMP A
●
●
Compressor startup program selected according to
ambient temperature and discharge temperature
1
Inverter compressor B
COMP B
●
DC fan motor A
FAN A
●
Controlled according to air side heat exchanger
refrigerant total outlet temperature (Tz/7)
DC fan motor B
FAN B
●
Electronic expansion valve
EXV 1
●
●
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to outdoor ambient
temperature, outdoor unit initial frequency
Four-way valve
STF1
●
●
Off
Solenoid valve (oil balance)
SV4_1
●
●
Closed for 200s, open for 600s, then closed
Water pump1
PUPM1
●
●
On
Water pump2
PUPM2
Water side heat exchanger heater 1
EVA-HEAT 1
●
●
According to water side heat exchanger
anti-freezing temperature (Taf)
Water side heat exchanger heater 2
EVA-HEAT 2
●
Water flow switch heater
W-HEAT1
●
●
Controlled according to ambient temperature, water
inlet temperature and water outlet temperature
Electric auxiliary heat
E-HEAT_L/
E-HEAT_N
●
●
Off
Crank case heater 1
Heat 1
●
●
Controlled according to ambient temperature and
discharge temperature
Crank case heater 2
Heat 2
●
Notes:
1. Refer to Figure 3-4.1, Figure 3-4.2 and in Part 3, 4.2 “Compressor Startup Program”.