Grundig GHP-MM08, Руководство по обслуживанию

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Heat Pump Monobloc Inverter / User Manual
11 Heat Pump Space Heater 202202
3.4 Normal Operation Control
3.4.1 Component Control during Normal Operation
Table 3-4.1: Component control during heating and domestic hot water operations
Component
Control function and state
Inverter compressor
Controlled according to load requirement from hydraulic
module
DC fan motor
Controlled according to outdoor ambient temperature and
outdoor heat exchanger pipe temperature
Electronic expansion valve
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to in-water temperature, out-water
temperature and discharge temperature
4-way valve ON
Table 3-4.2: Component control during cooling operation
Component
Control function and state
Inverter compressor
Controlled according to load requirement from hydraulic
module
DC fan motor
Controlled according to outdoor ambient temperature and
outdoor heat exchanger pipe temperature
Electronic expansion valve
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to in-water temperature, out-water
temperature and discharge temperature
Four-way valve OFF
3.4.2 Compressor Output Control
The compressor rotation speed is controlled according to the load requirement. The compressor
follows a fixed starting procedure as shown in figure 3-3.1. After finishing the startup, the
compressor runs at the target rotation speed.
During normal operation the compressor speed is controlled according to inlet water
temperature, target water temperature set by the user interface, the rate of change in inlet water
temperature.
3.4.3 Compressor Step Control
The running speed of six-pole compressors (used on all 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.
3.4.4 Four way Valve Control
The four-way valve is used to change the direction of refrigerant flow through the water side heat
exchanger in order to switch between cooling and heating/DHW operations.
During heating and DHW operations, the four-way valve is on; during cooling and defrosting
operations, the four-way valve is off.