Carrier 48FP - Page 37

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GRA

VIO

J2 J1

OUTSIDE AIR

RELATIVE HUMIDITY

ACCESSORY

J2 J1

SPACE/RETURN

RELATIVE HUMIDITY

TB4

BLU

ORN

CH. 34

PSIO NO. 2

CH. 33

24V

FIELD-SUPPLIED

24-V ISOLATED

POWER SUPPLY

FIELD-SUPPLIED

24-V ISOLATED

POWER SUPPLY

24V

LEGEND

DSIO —

Relay Module

Fig. 18 — Remote START/UNOCCUPIED Control

LEGEND

TB —

Terminal Block

Field Wiring

Component Terminal

Terminal Block Terminal

Field Splice

Fig. 19 — Accessory Humidity Control

Fig. 17 — Differential Enthalpy Sensor

NOTE: TB4 located in auxiliary control box.

LEGEND

DSIO —

Relay Module

Fig. 18 — Remote START/UNOCCUPIED Control

Main Page

Table of Contents1
Safety Considerations2
General2
- Architecture2
PIC Rooftop Information4
Digital Air Volume (DAV) Linkage4
Major Control Components4
General4
- PROCESSOR MODULE no . 1 (Standard)4
- Control Options Module4
- Dsio2)4
- Transducers4
- Components4
- Space Temperature Sensor (T-55)6
- SPACE TEMPERATURE SENSOR (T-56) (Use with CV6
- Indoor Air Quality (Co 2 ) Sensors6
- Outdoor Air Volume Control7
Controls and Functions8
Definitions8
Accessing the Control System9
- (Hsio)9
- Keypad and Display Module (Hsio)9
- Accessing Functions and Subfunctions11
Basic System Functions12
Service Group16
Schedules Group18
Economizer and Power Exhaust Group20
- Nighttime/Unoccupied Free Cooling21
Smoke Control Group24
Special Ventilation Group25
- Indoor Air Quality (Iaq)25
Dehumidification and Humidifier Group28
- Dehumidification and Reheat28
Supply Fan Duct Pressure and VAV Control Group29
- SUPPLY FAN DUCT PRESSURE CONTROL (VAV Only)29
- SUPPLY-AIR SET POINT RESET (External Signal)30
Remote Controls Group31
- SPACE TEMPERATURE OFFSET (CV Only)31
Special Systems Group31
- HEAD PRESSURE/FAN CYCLING CONTROL (Motormaster® Head Pressure Control)32
- Transducers and Suction Thermistors33
Carrier Comfort Network33
Carrier Comfort Network (CCN) Group33
Installation Information34
Control Wiring34
Smoke Control34
- Function Wiring35
Remote SASP Reset35
Remote START/OCCUPIED Control35
Timed Discrete Output41
Air Pressure Tubing41
Space Temperature Sensors41
Humidity Sensors41
Interface43
- RJ-11 Plug Wiring44
Monitor And/Or Control from Non-CCN Building Management System44
Start-Up46
Initial Check46
Set Fan Status and Check Filter Switches46
- Supply Fan Status Switch (Fs)46
- Check Filter Switch (Cfs)46
Auxiliary Switch, Power Exhaust46
Adjusting Set Points47
- Set Point Function49
Program Time Sequences52
- Schedule Function52
Start Unit53
Operating Sequences53
Head Pressure Control56
Control Loop Checkout60
Unit Operation61
Status Function61
Troubleshooting71
Checking Display Codes71
Unit Standby71
Complete Unit Stoppage71
Single Circuit Stoppage72
Restart Procedure72
Alarm and Alerts72
- Diagnostic Alarm Codes and Possible Causes72
Thermistor Troubleshooting76
Transducer Troubleshooting80
Refrigerant Pressure Transducer Replacement and Calibration80
Red Led81
- Green Led81
- Processor Module (Psio1)81
- High-Voltage Relay Modules (Dsio1 and 2)81
- Control Options Module (Psio2)83
Control Modules81
Economizer Actuator84
Variable Frequency Drive84
Quick Test86
Forcing Values87
Service87
History Function87
Service Function87
Test Function96
Unit Control Wiring96
- Appendix A - Input/Output103
- Tables 034-078103
- Appendix B - Input/Output105
- Tables 088,104105
Appendix C - CCN Points List107
Appendix D - Bacnet Points List109
- Appendix E - Carrier Default Program111
- Parameter Values111
Start-Up Checklist113

Carrier 48FP - Page 37

Table of Contents

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