Carrier 50FK manuals

Carrier 50FK Specifications (64 pages)

Brand: Carrier | Category: Fireplaces | Size: 2.02 MB |

English

Table of contents

Controls Operation

1

CONTENTS (cont)

2

SAFETY CONSIDERATIONS

2

Rooftop Information —

2

VAV Control System —

2

Processor Board —

3

Fig. 1 — Processor Board

3

Relay Board —

5

Display Board —

5

Thermistors —

5

Fig. 5 — Relay Board

6

Compressor Operation

7

Accessory Board —

7

Single-Step Demand Limit —

7

Economizer —

10

054 UNITS

11

064, 074, 078 UNITS

11

088, 104 UNITS

11

(VFD) —

12

Units Only) —

12

Control Wiring —

13

Space Temperature Reset

13

Temperature Reset —

13

CONTROLS INSTALLATION

13

Demand Limit —

18

System (BMS) —

19

Smoke Control Modes —

21

Air Pressure Tubing —

23

034-048 UNITS

24

054-104 UNITS

24

START-UP

25

Initial Check

25

Configuration Header —

26

DIP Switches —

26

Adjusting Set Points —

27

Potentiometers —

27

SPEED CTRL

29

RUN MODE

29

50FM,FS Units) —

30

START UNIT

31

Quick Test Program —

31

OPERATING INFORMATION

34

Digital Display —

34

Operating Sequence —

35

Head Pressure Control —

36

074, 078 UNITS

37

054-088 UNITS

37

104 UNITS

37

054, 064 UNITS

37

TROUBLESHOOTING

44

Checking Display Codes —

44

Complete Unit Stoppage —

44

Single Circuit Stoppage —

44

Restart Procedure —

45

Diagnostic Codes —

45

Thermistor Troubleshooting —

48

K1 K2 K3

49

Enthalpy Sensor Checkout —

52

Economizer Motor —

52

(48FM and 50FM,FS)

55

Unit Wiring —

57

LEGEND AND NOTES FOR FIG. 57

58

SERVICE TRAINING

62

START-UP CHECKLIST

63

I. PRE-START-UP:

63

III. START-UP

64

IV. NOTES

64

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