Nobu NBFS-48IDU, Руководство по обслуживанию

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4 . Operation principle
outdoor unit
outdoor fan
1
14
13
2
15
connection pipe
12
cooling
pay attention to sealing
heating
16
3
4
5
7
8
6
indoor fan
10
11
9
indoor unit
connection pipe
1.compressor 2. 4-way value 3.condenser 4.flow divider for condenser 5.Non-return valve 6.auxiliary capillary 7.cooling capillary
8.high-pressure valve 9.flow divider for evaporator 10.evaporator 11. pipe temp. sensor for evaporator 12.low-pressure valve
13.Vapor liquid separator 14.low-pressure switch 15. high-pressure switch 16 、 pipe temp. sensor for condenser
Cooling cycly ： compressor → 4-way value → condenser → flow divider for condenser → Non-return valve → cooling capillary → high-pressure
valve → flow divider for evaporator → evaporator → low-pressure valve → 4-way value → Vapor liquid separator → compressor.
Heating cycly ： compressor → 4-way value → low-pressure valve → evaporator → flow divider for evaporator → high-pressure valve → cooling
capillary → auxiliary capillary → flow divider for condenser → condenser → 4-way value → Vapor liquid separator → compressor.
Note ： To the model of RF or LF beginning, use outdoor unit model to express the whole unit.