McQuay M5MAC Guia de Resolução de Problemas descarregar pdf (Página 40)

McQuay Service Guide Book

7. Sequential Control for Cool Mode ask Tan CS

The starting sequence for indoor fan, outdoor fan and compressors is shown as below:

*If available and applicable

The compressors will be turned on one by one depending on the on/off conditions shown in the

above.

8. Sequential Control for Heat Mode

The starting sequence for indoor fan, outdoor fan and compressors is shown as below:

*If available and applicable

The compressors will be turned on one by one depending on the on/off conditions shown in the

above.

Start

2 seconds

Indoor fan

Outdoor fan 1

15 seconds

Outdoor fan 2

Outdoor fan 3

Outdoor fan 4

2 seconds

2 seco

nds

2 seconds

Compressor 1*

Compressor 2*

Compressor 3*

Compressor 4*

Start

2 seconds

Indoor fan

Outdoor fan 1

15 seconds

Outdoor fan 2

Outdoor fan 3

Outdoor fan 4

2 seconds

Compressor 1*

Compressor 2*

Compressor 3*

Compressor 4*

2 seconds

All 4 way valves

15 seconds

Heater 1*

15 seconds

Heater 2*

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 89 90

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