User Manuals: Carrier WeatherMaster 48HC12 Series Unit

Manuals and User Guides for Carrier WeatherMaster 48HC12 Series Unit. We have 2 Carrier WeatherMaster 48HC12 Series Unit manuals available for free PDF download: Service And Maintenance Instructions, Installation Instructions Manual

Carrier WeatherMaster 48HC12 Series Service And Maintenance Instructions (148 pages)

Single Package Rooftop Gas Heat/Electric Cooling Unit with Puron (R-410A) Refrigerant

Brand: Carrier | Category: Air Conditioner | Size: 14 MB

Table of Contents
1
Safety Considerations
2
Unit Arrangement and Access
3
General
3
Maintenance
3
Routine Maintenance
3
Seasonal Maintenance
3
Return Air Filters
3
Outside Air Hood
4
Economizer Inlet Air Screen
4
Manual Outside Air Hood Screen
4
Supply Fan (Blower) Section
4
Supply Fan (Direct-Drive)
4
Supply Fan (Belt-Drive)
6
Belt
6
Staged Air Volume Control - 2 Speed Fan with Variable Frequency Drive (Vfd)
7
Staged Air Volume (SAV) Indoor Fan Speed
7
System
7
Identifying Factory Option
7
Unit Installation with SAV Option
8
Additional Variable Frequency Drive (Vfd) Installation and Troubleshooting
8
Motor
8
Replacing the Motor
8
Changing Fan Wheel Speed
9
Remote Vfd Keypad Reference
9
Cooling
12
Condenser Coil
12
Condenser Coil Maintenance and Cleaning Recommendation
12
Evaporator Coil
13
Thermostatic Expansion Valve (Txv)
13
TXV Operation
13
Replacing TXV
14
Refrigerant System Pressure Access Ports
14
Puron® (R-410A) Refrigerant
15
Refrigerant Charge
15
Cooling Charging Charts
15
Compressor
18
Lubrication
18
Replacing Compressor
18
Compressor Rotation
18
Filter Drier
18
Condenser-Fan Adjustment
18
Convenience Outlets
20
Smoke Detectors
21
System
21
Controller
21
Smoke Detector Sensor
21
Smoke Detector Locations
22
Completing Installation of Return Air Smoke
23
- Detector
  23
FIOP Smoke Detector Wiring and Response
23
Sensor and Controller Tests
24
Sensor Alarm Test
24
Controller Alarm Test
24
Dirty Controller Test
24
Dirty Sensor Test
25
Dirty Sensor Test Procedure
25
Changing the Dirt Sensor Test
25
Remote Station Test
25
SD-TRK4 Remote Alarm Test Procedure
25
Remote Test/Reset Station Dirty Sensor Test
25
Dirty Sensor Test Using an SD-TRK4
26
Detector Cleaning
26
Indicators
26
Troubleshooting
27
Protective Devices
27
Compressor Protection
27
Relief Device
27
Control Circuit, 24-V
27
Gas Heating System
28
General
28
Fuel Types and Pressures
28
Flue Gas Passageways
29
Combustion-Air Blower
29
Burners and Igniters
31
Removing the Heat Exchanger
32
Burner Ignition
33
Orifice Replacement
33
Troubleshooting Heating System
42
Premierlink™ Control
43
RTU Open Control System
43
Economizer Systems
43
Economi$Er IV Standard Sensors
49
Economi$Er IV Control Modes
49
Economi$Er IV Preparation
53
Differential Enthalpy
53
Single Enthalpy
53
DCV (Demand Controlled Ventilation) and Power
53
- Exhaust
  53
DCV Minimum and Maximum Position
53
Supply-Air Sensor Input
53
Economi$Er IV Troubleshooting Completion
54
Economi$Er X (Factory Option)
54
Start-Up, General
68
Unit Preparation
68
Additional Installation/Inspection
68
Gas Piping
68
Pre-Start-Up/Start-Up
68
Return-Air Filters
69
Outdoor-Air Inlet Screens
69
Compressor Mounting
69
Internal Wiring
69
Refrigerant Service Ports
69
Compressor Rotation
69
Cooling
69
Main Burners
69
Heating
69
Ventilation (Continuous Fan)
70
Start-Up, Premierlink Controls
70
Perform System Check-Out
70
Start-Up, Rtu-Open Controls
70
Fastener Torque Values
70
Appendix A -Model Number Nomenclature
71
Appendix B - Physical Data
72
Appendix C - Fan Performance
78
Appendix D - Wiring Diagrams
94
- Appendix E - Motormaster Sensor
  145
- Locations
  145
Start-Up Checklist
147

Carrier WeatherMaster 48HC12 Series Installation Instructions Manual (56 pages)

Single Package Rooftop Gas Heat/Electric Cooling Unit with Puron (R-410A) Refrigerant

Brand: Carrier | Category: Air Conditioner | Size: 8 MB

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User Manuals: Carrier WeatherMaster 48HC12 Series Unit

Carrier WeatherMaster 48HC12 Series Service And Maintenance Instructions (148 pages)

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Carrier WeatherMaster 48HC12 Series Installation Instructions Manual (56 pages)

Table of Contents

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