Carrier 16DF013-050 - Manual (Page 2)

CONTENTS
Page
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MACHINE DESCRIPTION . . . . . . . . . . . . . . . . . . . 3-13
Basic Absorption Cooling Cycle . . . . . . . . . . . . . . 3
Double Effect Reconcentration . . . . . . . . . . . . . . . . 3
Basic Heating Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Machine Construction . . . . . . . . . . . . . . . . . . . . . . . . 3
Cooling Cycle Flow Circuits . . . . . . . . . . . . . . . . . . 6
Heating Cycle Flow Circuits . . . . . . . . . . . . . . . . . . 6
Solution Cycle and Equilibrium Diagram . . . . . . 9
• PLOTTING THE COOLING SOLUTION CYCLE
• PLOTTING THE HEATING SOLUTION CYCLE
Purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Operation Status Indicators . . . . . . . . . . . . . . . . . . 13
Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
MACHINE CONTROLS . . . . . . . . . . . . . . . . . . . . . 14-32
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Start-Stop System . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
• SEMIAUTOMATIC START-STOP
• FULL AUTOMATIC START-STOP
Machine Control Panel . . . . . . . . . . . . . . . . . . . . . . 14
Status Indicator Sticker . . . . . . . . . . . . . . . . . . . . . 15
Adjustment Switches . . . . . . . . . . . . . . . . . . . . . . . . 15
• TOGGLE SWITCHES
• SET POINT AND DIP SWITCHES
Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Remaining Time Indication for
Dilution Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Typical Control Sequence —
Normal Cooling Start . . . . . . . . . . . . . . . . . . . . . . 25
Typical Control Sequence —
Normal Heating Start . . . . . . . . . . . . . . . . . . . . . . 25
Typical Control Sequence —
Normal Cooling Stop . . . . . . . . . . . . . . . . . . . . . . 28
Typical Control Sequence —
Normal Heating Stop . . . . . . . . . . . . . . . . . . . . . . 28
Abnormal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . 29
Operating Limit Controls . . . . . . . . . . . . . . . . . . . . 30
• HIGH-TEMPERATURE GENERATOR,
HIGH SOLUTION LEVEL
• HIGH-TEMPERATURE GENERATOR,
HIGH LEAVING SOLUTION TEMPERATURE
• HIGH-TEMPERATURE GENERATOR,
HIGH-SATURATION (VAPOR) TEMPERATURE
• CONCENTRATION CONTROL VALVE
• COOLING TOWER CONTROL
Automatic Capacity Control . . . . . . . . . . . . . . . . . 31
• TEMPERATURE CONTROL SETTINGS
• CHILLED/HOT WATER TEMPERATURE
DISPLAY
Burner Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
• COMBUSTION CONTROL
• FIRING RATE CONTROL
BEFORE INITIAL START-UP . . . . . . . . . . . . . . . . 32-36
Job Data and Tools Required . . . . . . . . . . . . . . . . 32
Inspect Field Piping . . . . . . . . . . . . . . . . . . . . . . . . . 33
Inspect Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 33
Inspect Machine Controls . . . . . . . . . . . . . . . . . . . 34
• PREPARATION
• CHECK COOLING CYCLE START
• CHECK HERMETIC PUMP STARTERS
AND SHUTDOWN CYCLE
• CHECK HERMETIC PUMP MOTOR OVERLOADS
• CHECK BURNER INTERLOCKS
• CHECK LOW CHILLED WATER
TEMPERATURE CUTOUT
• CHECK HEATING CYCLE START AND STOP
• CHECK WATER FLOW SWITCHES
Page
• CHECK HIGH-STAGE GENERATOR
LOW SOLUTION LEVEL SWITCH
• CHECK HIGH COMBUSTION TEMPERATURE
SWITCHES
• CHECK HIGH-STAGE GENERATOR
TEMPERATURE SWITCH
• CHECK HIGH-STAGE GENERATOR
PRESSURE SWITCH
• RESTORATION
Burner System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
• GENERAL
• GAS FIRING
• OIL FIRING
Standing Vacuum Test . . . . . . . . . . . . . . . . . . . . . . 36
• LONG INTERVAL TEST
• SHORT INTERVAL TEST
Machine Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . 36
INITIAL START-UP . . . . . . . . . . . . . . . . . . . . . . . . . 37-40
Job Data and Tools Required . . . . . . . . . . . . . . . . 37
Noncondensable Evacuation . . . . . . . . . . . . . . . . . 37
Solution and Refrigerant Charging . . . . . . . . . . . 37
• HANDLING LITHIUM BROMIDE SOLUTION
• CHARGING SOLUTION
• INITIAL REFRIGERANT CHARGING
Operational Controls Check and
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
• PREPARATION
• WATER PUMP STARTERS
AND OVERLOADS
• HERMETIC PUMP ROTATION
Initial Combustion . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Add Octyl Alcohol . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Initial Start Operation . . . . . . . . . . . . . . . . . . . . . . . 40
Capacity Control Adjustments . . . . . . . . . . . . . . . 40
Refrigerant Charge Final Adjustment . . . . . . . . . 40
Check Machine Shutdown . . . . . . . . . . . . . . . . . . . 40
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . 40-45
Operator Duties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Before Starting Machine . . . . . . . . . . . . . . . . . . . . . 43
Cooling/Heating Operation
Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
• CHANGING FROM COOLING CYCLE
TO HEATING CYCLE
• CHANGING FROM HEATING CYCLE
TO COOLING CYCLE
Start Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Heating Start-Up or Cooling Start-Up
After Limited Shutdown . . . . . . . . . . . . . . . . . . . 43
Cooling Start-Up After
Extended Shutdown (More than 21 Days) . . . 43
Start-Up After Below-Freezing
Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Operation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Normal Shutdown Procedure . . . . . . . . . . . . . . . . 44
Shutdown Below Freezing Conditions . . . . . . . . 45
Actions After Abnormal Shutdown . . . . . . . . . . . 45
Actions After Power Interruption . . . . . . . . . . . . . 45
PERIODIC SCHEDULED MAINTENANCE . . . . . . 46
Every Day of Operation . . . . . . . . . . . . . . . . . . . . . . 46
Every Month of Operation . . . . . . . . . . . . . . . . . . . 46
Every 2 Months of Operation . . . . . . . . . . . . . . . . 46
Every 6 Months of Operation or
Cooling/Heating Changeover . . . . . . . . . . . . . . 46
Every Year (At Changeover of Cooling/
Heating Cycle or Shutdown) . . . . . . . . . . . . . . . 46
Every 2 Years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Every 5 Years or 20,000 Hours
(Whichever is Shorter) . . . . . . . . . . . . . . . . . . . . 46
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