Kaisai KMK-60RY1, Руководство по обслуживанию

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2.2 Hydronic box Piping
Figure 2-2.2: Hydronic box piping diagram
Legend
1 Water side heat exchanger 9 Water pump
2 Water flow switch 10 Manometer
3 Refrigerant liquid line temperature sensor 11 Safety valve
4 Refrigerant gas line temperature sensor 12 Refrigerant gas side
5 Water outlet temperature sensor 13 Refrigerant liquid side
6 Water inlet temperature sensor 14 Water outlet
7 Air purge valve 15 Water inlet
8 Expansion vessel
Key components:
1.
Air purge valve:
Automatically removes air from the water circuit.
2.
Safety valve:
Prevents excessive water pressure by opening at 43.5 psi (3 bar) and discharging water from the water circuit.
3. Expansion vessel:
Balances water system pressure. (Expansion vessel volume: 8L.)
4.
Water flow switch:
Detects water flow rate to protect compressor and water pump in the event of insufficient water flow.
5.
Backup electric heater:
Provides additional heating capacity when the heating capacity of the heat pump is insufficient due to very low
outdoor temperature. Also protects the external water piping from freezing.
6.
Manometer:
Provides water circuit pressure readout.
7.
Water pump:
Circulates water in the water circuit.
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14 202004
Midea CAC Confidential
M thermal Split
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3 Refrigerant Flow Diagrams
Heating and domestic hot water operation
Figure 2-3.1: Refrigerant flow during heating or domestic hot water operation
Cooling and defrosting operation
Figure 2-3.2: Refrigerant flow during cooling and defrosting operations
Pressure sensor
Filter
Electronic expansion valve
Filter
High pressure
switch
Low pressure
switch
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Air side heat exchanger
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4-way
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High temperature, high pressure gas
High temperature, high pressure liquid
Low temperature, low pressure
Electronic expansion valve capiiiary
Hydronic box
Stop valve
Stop valve
Pressure sensor
Filter
Electronic expansion valve
Filter
High pressure
switch
Low pressure
switch
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Air side heat exchanger
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4-way
valve
High temperature, high pressure gas
High temperature, high pressure liquid
Low temperature, low pressure
Electronic expansion valve capacity
Stop valve
Stop valve
Hydronic box
202004 15
Midea CAC Confidential
Split