Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480037-01
Printed in U.S.A.
Form 48/50A-4T
Pg 1
8-06
Replaces: 48/50A-3T
Book 1
1
Tab
1a 1b
Controls, Start-Up, Operation,
Service and Troubleshooting
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . . . .2
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,3
BASIC CONTROL USAGE
. . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Comfort
Link Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Scrolling Marquee
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Accessory Navigator™ Display
. . . . . . . . . . . . . . . . . . . . . .4
Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
System Pilot™ Interface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
CCN Tables and Display
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
• GENERICS STATUS DISPLAY TABLE
Conventions Used in this Manual
. . . . . . . . . . . . . . . . . . . .5
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
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
. . . . . . . . . . . . . . . . . . . .27
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
. . . . . . . . . . . . . . . . . . . . . . . . . .28
Exhaust Options
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Set Clock on VFD (If Installed)
. . . . . . . . . . . . . . . . . . . . . .28
Programming Operating Schedules
. . . . . . . . . . . . . . . .29
SERVICE TEST
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29,30
General
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Service Test Mode Logic
. . . . . . . . . . . . . . . . . . . . . . . . . . .29
Independent Outputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Fans
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Cooling
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Heating
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
THIRD PARTY CONTROL
. . . . . . . . . . . . . . . . . . . . . . . . 30-32
Thermostat
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Alarm Output
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Remote Switch
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
VFD Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Supply Air Reset
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Demand Limit Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Demand Controlled Ventilation Control
. . . . . . . . . . . . .31
CONTROLS OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . 32-72
Modes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
• SYSTEM MODES
• HVAC MODES
Page
Unit Configuration Submenu
. . . . . . . . . . . . . . . . . . . . . . . 35
Cooling Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
• 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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
• 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 —
LINKAGE SYSTEMS
• MORNING WARM UP
• TEMPERING MODE
Static Pressure Control
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
• OPERATION
• SETTING UP THE SYSTEM
• STATIC PRESSURE RESET
• RELATED POINTS
Fan Status Monitoring
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
• GENERAL
• SETTING UP THE SYSTEM
• SUPPLY FAN STATUS MONITORING LOGIC
Dirty Filter Switch
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Economizer
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
• SETTING UP THE SYSTEM
• ECONOMIZER OPERATION
• UNOCCUPIED ECONOMIZER FREE COOLING
• ECONOMIZER OPERATION CONFIGURATION
• ECONOMIZER DIAGNOSTIC HELP
Building Pressure Control
. . . . . . . . . . . . . . . . . . . . . . . . . . 61
• BUILDING PRESSURE CONFIGURATION
• CONSTANT VOLUME 2-STAGE CONTROL
OPERATION
• MULTIPLE POWER EXHAUST STAGE BUILDING
PRESSURE CONTROL OPERATION
Smoke Control Modes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
• FIRE-SMOKE INPUTS
• AIRFLOW CONTROL DURING
FIRE-SMOKE MODES
48/50AJ,AK,AW,AY020-060
Single Package Large Rooftop Units
with Scroll Compressors
and
COMFORT
LINK™ Version 4.X Controls
Содержание WEATHERMAKER 48AJ020
Страница 95: ...95 Fig 13 Typical Main Control Box Wiring Schematic A48 7787 ...
Страница 96: ...96 TO NEXT PAGE Fig 14 Auxiliary Control Box Wiring Schematic A48 7294 ...
Страница 97: ...97 LEN PORT FOR USE WITH NAVIGATOR Fig 14 Auxiliary Control Box Wiring Schematic cont A48 7809 ...
Страница 98: ...98 Fig 15 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 6866 ...
Страница 99: ...99 TO NEXT PAGE Fig 16 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 7296 ...
Страница 100: ...100 FROM PREVIOUS PAGE Fig 16 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown cont A48 7297 ...
Страница 101: ...101 Fig 17 Typical Electric Heat Control Schematic 50AJ AK AW AY Size 051 and 060 Units Shown A48 6689 ...
Страница 102: ...102 TO NEXT PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown A48 7298 ...
Страница 103: ...103 FROM PREVIOUS PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown cont A48 7299 ...
Страница 104: ...104 Fig 19 Controls Option Wiring Schematic A48 7810 ...
Страница 105: ...105 Fig 20 Small Chassis Component Location Size 020 035 Units A48 7301 ...
Страница 106: ...106 Fig 21 Large Chassis Component Locations Size 036 060 Units A48 7302 ...