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Carrier Manuals
Chiller
AQUASNAP 30MPA
Controls, start-up, operation, service, and troubleshooting
Table Of Contents - Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting
Liquid chillers with scroll compressors and comfortlink controls
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Also See for AquaSnap 30MPA Series
:
User manual
(16 pages)
,
Operation and service manual
(80 pages)
,
Installation instructions manual
(20 pages)
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Table Of Contents
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Table of Contents
Table Of Contents
1
Safety Considerations
2
Conventions Used In This Manual
3
Basic Control Usage
3
Unit Sizes
3
General
3
Scrolling Marquee Display Menu Structure
4
Controls
4
Operating Modes
5
Accessory Navigator Display Module
6
Lang (Language Selection)
6
Main Base Board (Mbb)
7
Enable/Off/Remote Control Switch
7
Control Module Communication
7
Aux Board (Aux)
7
Energy Management Module (Emm)
7
Current Sensor Board (Csb)
7
Expansion Valve (Exv) Board
7
Emergency On/Off Switch
7
Board Addresses
7
Component, Power, And Control Drawings
8
Carrier Comfort Network (Ccn) Interface
13
Ccn Wiring Diagram
13
Thermistor Designations
14
Status Inputs
14
Output Relays
14
High Pressure Switch
14
Pressure Transducer Identification
15
Thermistors And Wells
15
Space Temperature Sensor Wiring
15
Cooler Leaving Fluid Sensor
15
Cooler Entering Fluid Sensor
15
Condenser Leaving Fluid Sensor
15
Condenser Entering Fluid Sensor
15
Compressor Return Gas
15
Outdoor-Air Temperature Sensor
15
Dual Leaving Water Temperature Sensor
15
Discharge Temperature Thermistor
15
Energy Management Module
16
Condenser Flow Protection
16
Thermostatic Expansion Valves (Txv)
16
Space Temperature Sensor
16
Loss-Of-Cooler Flow Protection
16
Electronic Expansion Valves (Exv)
17
Capacity Control
17
Space Temperature Averaging
17
Minutes Left For Start
17
Minutes Off Time
18
Capacity Control Overrides
18
Deadband Multiplier
18
First Stage Override/Slow Change Override
18
Ramp Loading
19
Low Entering Fluid Temperature Unloading
19
Cooler Freeze Protection
19
Low Saturated Suction Protection
19
Time, Day, And Date
20
Time Required Configuration
20
Day And Date Required Configurations
20
Broadcast Required Configurations
20
Operation Of Machine Based On Control Method
21
Daylight Savings Required Configurations
21
Holiday Required Configurations
22
Occupancy Schedule Required Configurations
23
Ccn Global Schedule
24
Timed Override
24
Cooling Set Point Select
25
Ice Mode
25
Cooler Pump Control
25
Alarm Routing
25
Control Methods And Cooling Set Points
26
Alarm Routing Control
26
Cooler Pump Sequence Of Operation
27
Condenser Pump/Condenser Fan Output Control
27
Configuring And Operating Dual Chiller Control
27
Dual Chiller Configuration (Master Chiller Example)
28
Dual Chiller Configuration (Slave Chiller Example)
30
Temperature Reset
31
Dual Chiller Thermistor Location
31
Dual Leaving Water Thermistor Well
31
Brass Well Thermistor
31
Menu Configuration Of 4 To 20 Ma Cooling Set Point Control
32
4 To 20 Ma Reset
32
Configuring Outdoor Air And Space Temperature Reset
32
Configuring Return Temperature Reset
33
Outdoor-Air Temperature Reset
33
Space Temperature Reset
33
Return Fluid Reset
33
Cooling Set Point (4 To 20 Ma)
34
4 To 20-Ma Demand Limiting
34
Demand Limit (2-Stage Switch Controlled)
34
Externally Powered Demand Limit
34
Demand Limit (Ccn Loadshed Controlled)
34
Configuring Demand Limit
35
Pre-Start-Up
36
Digital Scroll Option
36
System Check
36
Configuring Minimum Load Control
36
Start-Up And Operation
37
Minimum Flow Rates And Minimum Loop Volume
37
Sight Glass Location
37
Actual Start-Up
38
Check Refrigerant Charge
38
Preliminary Puron Refrigerant (R-410A) Charge
38
Evacuation And Dehydration
38
Check Compressor Oil Level
39
Adjust Oil Charge
39
Liquid Charging Method
39
60 Hz Additional Lubricant
39
Operating Sequence
40
Operating Limitations
40
Service Test
40
Temperature Limits For Standard 30Mp Units
40
Voltage - All Units
40
Charging
41
Electronic Components
41
Electronic Expansion Valve (Exv) (30Mp050
41
Exv Troubleshooting Procedure
42
Exv Valve Replacement
42
Valve Motor Replacement
42
Exv Cable Connections To Exv Module
42
Disassembly And Assembly Of Exv Motor
43
Compressor Replacement
44
30Mp Cooler And 30Mpw Condenser
44
Brazed-Plate Cooler And Condenser Heat Exchanger Replacement
44
Compressor Location
44
Water Treatment
45
Oil Charge
45
Check Refrigerant Feed Components
45
Moisture-Liquid Indicator
45
Brazed-Plate Cooler And Condenser
45
Thermostatic Expansion Valve (Txv)
45
Check Unit Safeties
46
Thermistors
46
Pressure Transducers
46
Pressure Relief Devices
46
Chilled Water Flow Switch
47
Thermistor Well
47
Thermistor Connections To Main Base Board, J8 Connector
47
5K Thermistor Temperatures Vs. Resistance/Voltage Drop
48
10K Thermistor Temperature Vs. Resistance/Voltage Drop (For Spt)
50
86K Thermistor Vs Resistance (Dtt)
51
Recommended Maintenance Schedule
52
Troubleshooting
52
Replacing Defective Modules
52
Complete Unit Stoppage And Restart
52
Strainer
52
Unit Enable-Off-Remote Control Switch Is Off
52
Thermistor Failure
53
Enabling And Disabling Compressors
53
Compressor Discharge Check Valve
53
Low Saturated Suction
53
Chilled Fluid Proof-Of-Flow Switch Open
53
Open 24-V Control Circuit Breaker(S)
53
Motor Overload Protection
54
Compressor Overcurrent
54
Astp Protection Trip
54
High Discharge Gas Temperature Protection
54
Kriwan Motor Protection Module Troubleshooting
55
Kriwan Motor Protection Wiring
55
Removing The Kriwan Motor Protection Module
56
Installing The Coresense Communications Module
56
Coresense Communications Module Troubleshooting
56
Warning Codes (Green Led Flash Code)
57
Alert/Lockout Codes (Red Led Flash Code)
57
Coresense Communication Module Dip Switch Settings
58
Coresense Communication Module Led Flash Codes
58
Alarms And Alerts
59
Bitzer Protection Module
59
Field Troubleshootng Solid-State Motor Protection Module
59
Motor Protector Ptc Key Values
59
Alarm And Alert Codes
60
Compressor Failure Alerts
63
Compressor Stuck On Failure Alarms
64
Dual Chiller Thermistor Failure
64
Circuit A Discharge Pressure Transducer Failure
64
Circuit A Suction Pressure Transducer Failure
64
Circuit A Low Superheat
65
Circuit A Low Cooler Suction Temperature
65
Circuit A, High Pressure Switch Failure
65
Circuit A High Head Pressure
65
Operating Envelope For R-410A Compressor
66
Circuit A Low Suction Pressure
67
Reverse Rotation Detected
67
Unit Is In Emergency Stop
68
Illegal Configuration Alarm
68
Loss Of Communication With The Aux Board
68
4 To 20 Ma Reset Input Failure
68
Illegal Configurations (Alarm A151)
69
Cooler Flow Interlock Contacts Failed To Close At Start-Up Alert)
69
Cooler Flow/Interlock Contacts Opened During Normal Operation Alarm
69
Cooler Pump Interlock Closed When Pump Is Off Alarm
69
Loss Of Communication With The Slave Chiller Alert
70
Loss Of Communication With The Master Chiller Alert
70
Cooler Freeze Protection Alarm
70
Ewt Or Lwt Thermistor Failure Alarm
70
Condenser Pump Interlock Opened During Normal Operation Alarm
71
Condenser Pump Interlock Closed When Pump Is Off Alarm
71
Strainer Blowdown Scheduled Maintenance Due
71
Loss Of Communication With Water System Manager
71
Local Display Tables
72
Run Status Mode And Sub-Mode Directory
72
Service Test Mode And Sub-Mode Directory
73
Temperature Mode And Sub-Mode Directory
74
Pressures Mode And Sub-Mode Directory
74
Set Points Mode And Sub-Mode Directory
74
Inputs/Outputs Mode And Sub-Mode Directory
74
Configuration Mode And Sub-Mode Directory
75
Time Clock Mode And Sub-Mode Directory
77
Operating Mode And Sub-Mode Directory
80
Alarms Mode And Sub-Mode Directory
81
Ccn Display Tables
82
Ccn Maintenance Tables
83
Ccn Configuration Tables
85
Ccn Service Tables
87
Ccn Setpoint Tables
87
Bacnet Communication Option
88
Address Rotary Switches
88
Upc Open Controller
88
Configuring The Bas Port For Bacnet Ms/Tp
89
Wiring The Upc Open Controller To The Ms/Tp Network
89
Dip Switches
89
Network Wiring
89
Terminator Installation
90
Ms/Tp Wiring Recommendations
90
Local Acces To The Upc Open Controller
91
Configuring The Upc Open Controller's Properties
91
Open System Wiring Specifications And Recommended Vendors
91
Bacview Device Connection
91
Led Status Indicators
92
Run And Error Leds Controller And Network Status Indication
92
Network Points List
93
Index
97
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Table of Contents
Troubleshooting
EXV Troubleshooting Procedure
42
Recommended Maintenance Schedule
52
Kriwan Motor Protection Module Troubleshooting
55
Removing the Kriwan motor protection module
56
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