Carrier WEATHERMASTER 50Z075 Manuals

Manuals and User Guides for Carrier WEATHERMASTER 50Z075. We have 1 Carrier WEATHERMASTER 50Z075 manual available for free PDF download: Operation And Service Manual

Carrier WEATHERMASTER 50Z075 Operation And Service Manual (180 pages)

Single Package Large Rooftop Units with COMFORTLINK Version 4.X Controls

Brand: Carrier | Category: Air Conditioner | Size: 6.57 MB

Table of Contents
1
Service and Troubleshooting
1
Safety Considerations
2
General
3
Conventions Used in this Manual
3
Basic Control Usage
4
Comfortlink Controls
4
Scrolling Marquee
4
Accessory Navigator™ Display
4
Operation
5
System Pilot™ Interface
5
CCN Tables and Display
5
- Generic Status Display Table
  5
Start-Up
7
Unit Preparation
7
Unit Setup
7
Internal Wiring
7
Accessory Installation
7
Crankcase Heaters
7
Evaporator Fan
7
Controls
7
Gas Heat
7
Controls Quick Start
33
Two-Stage Constant Volume Units with
33
- Mechanical Thermostat
  33
- Space Sensor
  33
Variable Air Volume Units Using Return Air
33
- Sensor or Space Temperature Sensor
  33
Multi-Stage Constant Volume Units with
33
Multi-Stage Constant Volume Units with
34
- Space Sensor
  34
Economizer Options
34
Indoor Air Quality Options
34
Exhaust Options
34
Set Clock on VFD (if Installed)
35
Programming Operating Schedules
36
Service Test
36
General
36
Service Test Mode Logic
38
Independent Outputs
38
Fans
38
Actuators
38
Cooling
38
Heating
38
Third Party Control
39
Thermostat
39
Alarm Output
39
Remote Switch
39
VFD Control
39
Supply Air Reset
39
Demand Limit Control
39
Economizer/Outdoor Air Damper Control
39
Controls Operation
40
Modes
40
- System Modes
  41
- Hvac Modes
  41
Unit Configuration Submenu
42
Cooling Control
45
Heating Control
54
Static Pressure Control
61
- Static Pressure Reset
  64
Fan Status Monitoring
64
- Supply Fan Status Monitoring Logic
  64
Dirty Filter Switch
64
Economizer
65
Building Pressure Control
69
Smoke Control Modes
72
- Fire Smoke Inputs
  73
- Airflow Control During the Fire/Smoke
  73
- Relevant Items
  73
Indoor Air Quality Control
73
Humidification
76
- Configuring the Humidifier Actuator
  77
Dehumidification and Reheat
77
Temperature Compensated Start
78
- Temperature Compensated Start Logic
  79
Carrier Comfort Network
79
- (Ccn)
  79
Alert Limit Configuration
80
Sensor Trim Configuration
81
Discrete Switch Logic Configuration
81
Display Configuration
82
Remote Control Switch Input
83
Hot Gas Bypass
83
Space Temperature Offset
83
Time Clock Configuration
84
Troubleshooting
85
Complete Unit Stoppage
85
Single Circuit Stoppage
85
Service Analysis
85
Restart Procedure
85
Thermistor Troubleshooting
85
Transducer Troubleshooting
86
Forcing Inputs and Outputs
90
Run Status Menu
90
- Auto View of Run Status
  92
- Economizer Run Status
  93
- Cooling Information
  93
- Mode Trip Helper
  93
- Ccn/Linkage Display Table
  94
- Compressor Run Hours Display Table
  94
- Compressor Starts Display Table
  94
Alarms and Alerts
94
Major System Components
102
General
102
Factory-Installed Components
102
Accessory Control Components
122
Service
125
Service Access
125
Adjustments
128
Cleaning
129
Lubrication
130
Refrigerant Feed Components
130
Thermostatic Expansion Valve (TXV)
130
Refrigeration Circuits
130
Oil Charge
130
Gas System Adjustment (48Z Only)
131
Moisture/Liquid Indicator
131
Filter Drier
131
Liquid Line Service Valve
131
Compressor Discharge Service Valve
131
Compressor Suction Service Valve
131
Protective Devices
131
Relief Devices
132
Control Circuit, 115 V
132
Control Circuit, 24 V
132
Gas Heat (48Z Only)
132
Compressor Removal
132
Compressor Replacement
132
Appendix A - Local Display Tables
133
Appendix A — Local Display Tables
141
Appendix B - Ccn Tables
142
Appendix B — Ccn Tables
156
Appendix C - Unit Staging Tables
156
Appendix C — Unit Staging Tables
159
Appendix D - Vfd Information
160
Appendix D — Vfd Information
168
Process
169
Process
170
Appendix E - Mode Selection
170
Index
171
Controls Set Point and Configuration Log
173
Unit Start-Up Checklist
179

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Carrier WEATHERMASTER 50Z075 Operation And Service Manual (180 pages)

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