mundoclima Aerotherm V17 Series, Руководство по обслуживанию

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P
art 3 - Contr
ol
4 Normal Operation Control
4.1 Component Control during Normal Operation
Table 3-5.1: Component control during heating and domestic hot water operations
Component
Wiring diagram
label
4-8kW 10-16kW
Control functions and states
Inverter compressor
COMP ƽ ƽ
Controlled according to load requirement from
hydronic system
DC fan motor / Upper DC fan motor FAN1 / FAN_UP ƽ ƽ
Controlled according to outdoor heat exchanger
pipe temperature
Lower DC fan motor FAN_DOWN ƽ
Electronic expansion valve EXV
ƽ ƽ
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to discharge
temperature, suction superheat and compressor
speed
Four-way valve ST
ƽ ƽ
On
Table 3-5.2: Component control during cooling operation
Component
Wiring diagram
label
4-8kW 10-16kW
Control functions and states
Inverter compressor
COMP ƽ ƽ
Controlled according to load requirement from
hydronic system
DC fan motor / Upper DC fan motor FAN1 / FAN_UP ƽ ƽ
Controlled according to outdoor heat exchanger pipe
temperature
Lower DC fan motor FAN_DOWN
ƽ
Electronic expansion valve EXV
ƽ ƽ
Position (steps) from 0 (fully closed) to 480 (fully
open), controlled according to discharge
temperature, suction superheat and compressor
speed
Four-way valve ST
ƽ ƽ
Off
4.2 Compressor Output Control
The compressor rotation speed is controlled according to the load requirement. Before compressor startup, the
M-Thermal Split outdoor unit determines the compressor target speed according to outdoor ambient temperature, leaving
water set temperature and actual leaving water temperature and then runs the appropriate compressor startup program.
Refer to Part 3, 4.2 “Compressor Startup Program”. Once the startup program is complete, the compressor runs at the
target rotation speed.
During operation the compressor speed is controlled according to the rate of change in water temperature, the refrigerant
system pressure and the refrigerant temperature.
4.3 Compressor Step Control
The running speed of four-pole compressors (used on 5-7kW models) in rotations per second (rps) is half the frequency (in
Hz) of the electrical input to the compressor motor. The running speed of six-pole compressors (used on all other models)
in rotations per second (rps) is one third of the frequency (in Hz) of the electrical input to the compressor motor. The
frequency of the electrical input to the compressor motors can be altered at a rate of 1Hz per second.
MUNDOCLIMA AEROTHERM V17 - BIBLOC