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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480077-01
Printed in U.S.A.
Form 48/50A-9T
Pg 1
6-10
Replaces: 48/50A-7T
Controls, Start-Up, Operation,
Service and Troubleshooting
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . . . .2
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Conventions Used in this Manual
. . . . . . . . . . . . . . . . . . . .3
BASIC CONTROL USAGE
. . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Comfort
Link Controls
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Scrolling Marquee
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Accessory Navigator™ Display
. . . . . . . . . . . . . . . . . . . . . .4
Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
System Pilot™ Interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
CCN Tables and Display
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
• GENERICS STATUS DISPLAY TABLE
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
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
. . . . . . . . . . . . . . . . . . . . . . 27-29
Two-Stage Constant Volume Units with
Mechanical Thermostat
. . . . . . . . . . . . . . . . . . . . . . . . . .27
Two-Stage Constant Volume Units with
Space Sensor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Variable Air Volume Units Using Return Air Sensor
or Space Temperature Sensor
. . . . . . . . . . . . . . . . . . . .28
Multi-Stage Constant Volume Units with
Mechanical Thermostat
. . . . . . . . . . . . . . . . . . . . . . . . . .28
Multi-Stage Constant Volume Units with
Space Sensor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Economizer Options
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Indoor Air Quality Options
. . . . . . . . . . . . . . . . . . . . . . . . . .29
Exhaust Options
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Programming Operating Schedules
. . . . . . . . . . . . . . . .29
SERVICE TEST
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29,30
General
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Service Test Mode Logic
. . . . . . . . . . . . . . . . . . . . . . . . . . .29
Independent Outputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Fans in Service Test Mode
. . . . . . . . . . . . . . . . . . . . . . . . .30
Cooling in Service Test Mode
. . . . . . . . . . . . . . . . . . . . . . .30
Heating in Service Test Mode
. . . . . . . . . . . . . . . . . . . . . . .30
THIRD PARTY CONTROL
. . . . . . . . . . . . . . . . . . . . . . . . 31,32
Thermostat
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Alarm Output
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Remote Switch
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
VFD Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Supply Air Reset
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Demand Limit Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Demand Controlled Ventilation Control
. . . . . . . . . . . . .31
CONTROLS OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . 32-75
Modes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
• SYSTEM MODES
• HVAC MODES
Page
Unit Configuration Submenu
. . . . . . . . . . . . . . . . . . . . . . . 35
Cooling Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
• SETTING UP THE SYSTEM
• MACHINE DEPENDENT CONFIGURATIONS
• SET POINTS
• SUPPLY AIR RESET CONFIGURATION
• COOLING CONFIGURATION
• COMPRESSOR SAFETIES
• COMPRESSOR TIME GUARDS
• COOL MODE SELECTION PROCESS
• COOLING MODE DIAGNOSTIC HELP
• SUMZ COOLING ALGORITHM
• DEMAND LIMIT CONTROL
• HEAD PRESSURE CONTROL
• ECONOMIZER INTEGRATION WITH
MECHANICAL COOLING
Heating Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
• SETTING UP THE SYSTEM
• HEAT MODE SELECTION PROCESS
• TEMPERATURE DRIVEN HEAT MODE
EVALUATION
• HEAT MODE DIAGNOSTIC HELP
• INTEGRATED GAS CONTROL BOARD LOGIC
• RELOCATE SAT SENSOR FOR HEATING IN
LINKAGE SYSTEMS
• MORNING WARM UP
• TEMPERING MODE
Static Pressure Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
• OPERATION
• SETTING UP THE SYSTEM
• STATIC PRESSURE RESET OPERATION
• RELATED POINTS
Fan Status Monitoring
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
• GENERAL
• SETTING UP THE SYSTEM
• SUPPLY FAN STATUS MONITORING LOGIC
Dirty Filter Switch
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Economizer
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
• SETTING UP THE SYSTEM
• ECONOMIZER OPERATION
• UNOCCUPIED ECONOMIZER FREE COOLING
• ECONOMIZER OPERATION CONFIGURATION
• ECONOMIZER DIAGNOSTIC HELP
Building Pressure Control
. . . . . . . . . . . . . . . . . . . . . . . . . . 63
• BUILDING PRESSURE CONFIGURATION
• CONSTANT VOLUME 2-STAGE CONTROL
OPERATION
• MULTIPLE POWER EXHAUST STAGE BUILDING
PRESSURE CONTROL OPERATION
• VFD POWER EXHAUST BUILDING PRESSURE
CONTROL
Smoke Control Modes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
• FIRE-SMOKE INPUTS
• AIRFLOW CONTROL DURING THE
FIRE-SMOKE MODES
• RELEVANT ITEMS
WEATHERMAKER
®
48/50AJ,AK,AW,AY,A2,A3,A4,A5020-060
Single Package Large Rooftop Units
with
COMFORT
LINK™ Version 5.x Controls
Содержание WEATHERMAKER 48/50AJ
Страница 103: ...103 Fig 15 Typical Main Control Box Wiring Schematic 48 50AJ AK AW AY Units cont a48 8355 ...
Страница 104: ...104 Fig 16 Typical Main Control Box Wiring Schematic 48 50A2 A3 A4 A5 Units a48 8355 ...
Страница 105: ...105 TO NEXT PAGE Fig 17 Typical Auxiliary Control Box Wiring Schematic A48 7294 ...
Страница 106: ...106 Fig 17 Typical Auxiliary Control Box Wiring Schematic cont a48 8356 ...
Страница 107: ...107 Fig 18 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown a48 8357 ...
Страница 108: ...108 TO NEXT PAGE Fig 19 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 7296 ...
Страница 109: ...109 Fig 19 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown cont A48 8358 ...
Страница 110: ...110 Fig 20 Typical Electric Heat Control Schematic 50 Series Size 051 and 060 Units Shown a50 8228 ...
Страница 111: ...111 TO NEXT PAGE Fig 21 Typical Power Schematic 48 50AJ AK AW AY051 and 060 Units Shown A48 7298 ...
Страница 112: ...112 FROM PREVIOUS PAGE Fig 21 Typical Power Schematic 48 50AJ AK AW AY051 and 060 Units Shown cont a48 8360 ...
Страница 113: ...113 Fig 22 Typical Power Schematic 48 50A2 A3 A4 A5060 Unit Shown ...
Страница 114: ...114 SW1 SW2 OR DEHUMIDIFY SWITCH Fig 23 Typical Controls Option Wiring Schematic a48 8361 ...
Страница 115: ...115 Fig 24 Typical Small Chassis Component Location Size 020 035 Units a48 8362 ...
Страница 116: ...116 Fig 25 Typical Large Chassis Component Locations Size 036 060 Units A48 7302 ...
Страница 169: ...169 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...