Multiaqua MHRC Manuale utente
CONTROL MANUAL
MHRC CHILLER
Multiaqua, Inc.
306 Hagood Street, Easley, South Carolina 29640 • Phone: (864) 850-8990 Fax: (864) 850-8995
Rev.2015-09-25
MHRC
with MCS MAGNUM Controls
REVISION 1
2
Our commitment to creating innovative air conditioning products has made us one of the most
respected organizations in the industry. From concept to market, Multiaqua takes a hands-on approach
to ensure that each and every step meets our stringent standards of quality, durability and dependability.
All Multiaqua products are designed with the future in mind. That’s why all air conditioning chiller
products are flexible, which makes it easy to adapt to virtually all kinds of building applications.
Multiaqua, Inc.
306 Hagood Street, Easley, South Carolina 29640
Phone: (864) 850-8990 Fax: (864) 850-8995
http://www.multiaqua.com
All information contained within this document is considered to be proprietary information of MCS System Controls.
No information or data from this document shall be published, used, reproduced, transmitted, or disclosed to others
outside your organization without the prior expressed written consent of Multiaqua, Inc. This document and the
information contained herein shall be treated as proprietary. Reasonable provisions shall be provided to ensure that this
information remains proprietary by your employees, agents, and other personnel that may have access to this document.
Copyright ©2015
Date Author Description of Changes
09-16-15 DEW Contruct manual
09-23/15 DEW Add edits to page 5, add modes, add drawings
Revision/Disclaimer Page
REVISION 1
3
1. Table of Contents
1. Table of Contents .................................................................................................................................................3
2. Introduction to Multiaqua and MCS-Magnum ...................................................................................................5
2.1. About the Multiaqua Heat reclaim chiller (MHRC)........................................................................................5
2.2. About the MCS-MAGNUM............................................................................................................................5
2.3. About PC Support Software for MCS-MAGNUM..........................................................................................5
2.4. Requirements for PC Software.....................................................................................................................5
2.5. MCS- MAGNUM KEYPAD - Keys and their functions..................................................................................6
3. MHRC Start Up Screens ......................................................................................................................................7
3.1. MHRC OPERATIONAL.................................................................................................................................7
3.2. MHRC UNIT STATUS – POWER UP...........................................................................................................7
4. Status Displays ....................................................................................................................................................8
4.1. PRESS MENU – SELECT STATUS ............................................................................................................8
4.2. UNIT COMPRESSOR LOADED ..................................................................................................................8
4.3. COMPRESSOR 1 STATUS- RUNNING......................................................................................................8
4.4. COMPRESSOR 1 STATUS- RUNNING.......................................................................................................9
4.5. EXV VALVE OPENING.................................................................................................................................9
5. Status Outputs ...................................................................................................................................................10
5.1. MAIN MENU - SELECT OUTPUTS STATUS.............................................................................................10
5.2. UNIT RELAYS STATUS..............................................................................................................................10
5.3. RELAY ANALOG STATUS..........................................................................................................................10
6. Status Inputs ......................................................................................................................................................11
6.1. PRESS MENU - SELECT INPUTS ............................................................................................................11
6.2. INPUTS (SENSOR STATUS).....................................................................................................................11
6.3. INPUT VALUE FOR M1 SENSOR..............................................................................................................11
6.4. CHANGE VALUE REQUIRES HIGH AUTHORIZATION............................................................................11
7. Alarms .................................................................................................................................................................12
7.1. PRESS MENU - SELECTALARMS...........................................................................................................12
7.2. ALARMS.....................................................................................................................................................12
8. Graphs ................................................................................................................................................................13
8.1. PRESS MENU - SELECT GRAPHS ..........................................................................................................13
8.2. GRAPH 1ST SENSOR INPUT...................................................................................................................13
8.3. GRAPH SAMPLE RATE.............................................................................................................................13
8.4. GRAPH EDIT SAMPLE RATE....................................................................................................................13
9. Set Points ...........................................................................................................................................................14
9.1. PRESS MENU - SELECT SET POINTS ....................................................................................................14
9.2. DISPLAY SET POINTS ..............................................................................................................................14
9.3. EDIT SETPOINT.........................................................................................................................................14
9.4. HIGHER AUTH NEEDED...........................................................................................................................14
10. Service Tools ......................................................................................................................................................15
10.1. PRESS MENU - SELECT SERV TOOLS...................................................................................................15
10.2. SERV TOOLS OPTIONS............................................................................................................................15
10.3. SYSTEM INFO OPTION ............................................................................................................................15
10.4. SYSTEM INFO SCREEN 1........................................................................................................................15
10.5. SYSTEM INFO SCREEN 2........................................................................................................................16
10.6. SYSTEM INFO SCREEN 3........................................................................................................................16
10.7. SYSTEM INFO SCREEN 4........................................................................................................................16
10.8. SYSTEM INFO SCREEN 5........................................................................................................................16
11. Lockout Reset Alarms .......................................................................................................................................17
11.1. PRESS MENU - SELECT LCKOUT RST...................................................................................................17
11.2. NO CURRENT LOCKOUTS.......................................................................................................................17
12. Lockout Alarms ..................................................................................................................................................18
12.1. PRESS MENU - SELECT LCKOUTALARM..............................................................................................18
12.2. 1ST LCKOUT ALARM DISPLAYED ...........................................................................................................18
13. Passwords ..........................................................................................................................................................19
13.1. PRESS MENU - SELECT PASSWORDS...................................................................................................19
13.2. ENTER PASSWORD..................................................................................................................................19
REVISION 1
4
13.3. ENTER TO GETAUTHORIZED.................................................................................................................19
13.4. PASSWORD ACCEPTED ..........................................................................................................................19
14. Main Menu Functin Keys ...................................................................................................................................20
14.1. MAIN MENU...............................................................................................................................................20
14.2. HELP DISPLAY ..........................................................................................................................................20
14.3. MHRC LARGE TYPE DISPLAY .................................................................................................................20
14.4. LARGE TYPE DISPLAY.............................................................................................................................20
15. MHRC MODES ....................................................................................................................................................21
15.1. UNIT IN POWER UP..................................................................................................................................21
15.2. NO RUN- I/O LOSS...................................................................................................................................21
15.3. UNIT IN LOCKOUT ....................................................................................................................................21
15.4. UNIT IS OFF ...........................................................................................................................................21
15.5. UNIT IS HOLDING .....................................................................................................................................21
15.6. UNIT UNLOADING....................................................................................................................................21
15.7. UNIT IS LOADING......................................................................................................................................22
15.8. RUN/STOP SW OFF..................................................................................................................................22
15.9. SCHEDULED OFF.....................................................................................................................................22
15.10. OFF-NO FLOW ..........................................................................................................................................22
15.11. UNIT IS UNLOADED..................................................................................................................................22
15.12. UNIT IS LOADED.......................................................................................................................................22
15.13. SWITCHING MODES.................................................................................................................................22
17. MHRC Sequence of Operation ..........................................................................................................................23
17. MCS-MAGNUM EXV Suctin/Discharge Superheat Logic ...............................................................................25
17.1.1. EXV Related Setpoints. .....................................................................................................28
17.1.2. EXV Control States...............................................................................................................28
18. MAGNUM Condenser Control Strategy ..........................................................................................................29
19. MCS-CONNECT CONTROL STATUS DISPLAY ...............................................................................................30
20. MHRC MAGNUM Setpoints ...............................................................................................................................31
21. MHRC MAGNUM Alarms and Safeties .............................................................................................................36
21.1. Introduction.................................................................................................................................................36
21.2. Information only alarms..............................................................................................................................36
21.2.1 System generated alarms.................................................................................................................36
21.2.2 Alarms as a result of user actions.....................................................................................................36
21.2.3 Alarms generated by the control algorithm.......................................................................................37
21.3. MHRC MAGNUM system alarms...............................................................................................................37
21.3.1 Alarms are generated by the MHRC MAGNUM control algorithm:...................................................37
21.1.1. Configuration problem alarms ..............................................................................................37
21.1.2. MCS I/O network problem alarms ........................................................................................37
21.1.3. Sensors fault alarms.............................................................................................................37
21.4. MHRC Unit Safeties ...................................................................................................................................38
21.4.1 Introduction.......................................................................................................................................38
21.4.2 Unit Safeties .....................................................................................................................................38
21.5. MHRC Compressor Safeties......................................................................................................................39
21.5.1 Introduction.......................................................................................................................................39
21.5.2 Compressor safeties........................................................................................................................39
21.6. Condenser Fan safeties .............................................................................................................................40
21.7. Heating Stages Safeties.............................................................................................................................41
21.8. EVAPORATOR SAFETIES.........................................................................................................................41
22. APPENDIX A - MAGNUM No Run Capacity Run States ................................................................................42
23. APPENDIX B - Details of MAGNUM ..................................................................................................................43
24. APPENDIX C - MCS SENSORS - Quick Reference Sheet ................................................................................44
24.1. MCS-CT 300 Current Transformer.............................................................................................................44
24.2. MCS-667 Pressure Transducer..................................................................................................................44
24.3. MCS-DS-INTERFACE BOARD..................................................................................................................45
24.4. MCS-T-100 - TEMPERATURE SENSOR...................................................................................................45
25. APPENDIX E - MHRC Digital Scroll Drawings ...................................................................................................46
26. APPENDIX F - Confi guration Files - Digital Scroll ..........................................................................................52
27. APPENDIX G - MHRC Frequency Drive Drawings ..........................................................................................65
28. APPENDIX H - Confi guration Files - Frequency Drive ....................................................................................71
29. APPENDIX I - MCS Trouble Shooting Reference ............................................................................................86
REVISION 1
5
2.1. About the Multiaqua Heat reclaim chiller (MHRC)
A multi heat source/sink capable refrigerant management system designed to satisfy the Heating & Cooling
requirements of the global residential and commercial markets including, but not limited to, new construction,
retrofit, add-on, and process hydronic applications.
The MHRC is currently available in 5 ton nominal size and scalable to 100 tons in air cooled configuration .
Variable speed and Variable capacity Digital scroll compressors allow the system to modulate its capacity to
match the Heating and or Cooling requirements. The MHRC is a self-contained machine with no add-on mod-
ule requirements or additional assembly needed to simultaneously heat and cool water (SHC) or indepen-
dently make hot or cold water. The Multiaqua MHRC is designed with great care to provide easy servicing by
incorporating readily available components and diagnostics.
This family of equipment can be combined with groundwater or earth loops for enhanced efficiency operation.
It can also be combined with solar thermal or natural gas for low cost and extreme cold weather applications.
2.2. About the MCS-MAGNUM
The MCS-MAGNUM is a rugged microprocessor based controller that is designed for the hostile environment
of the HVAC industry. It is designed to provide primary control, no mechanical controls; interface with building
management systems; communicate both locally and remotely. The MCS-MAGNUM provides flexibility with
setpoints and control options that can be selected prior to commissioning a system or when the unit is live
and functioning. Displays, alarms and other interfaces are accomplished in a clear and simple language that
informs the user as to the status of the controller.
The MCS-MAGNUM is designed to safeguard the system that is being controlled, eliminate the need for
manual intervention and to provide a simple but meaningful man-machine-interface.
2.3. About PC Support Software for MCS-MAGNUM
MCS-CONNECT program provides both local and remote communications to the MCS-MAGNUM. Through
this program the status of the controller can be viewed and with proper authorization changes can be made
to the system. Configuration files can be transmitted to or received from an MCS-MAGNUM unit. The MCS-
MAGNUM automatically performs history logging; this program will graph selected items. This program is
written in the Java programming language. A general user’s manual is available with this software package.
This program runs under Windows 7 or greater and makes use of the Microsoft Windows Help function to as-
sist the user.
2.4. Requirements for PC Software
Minimum System Required to Run Program
• PC with a Pentium2-class processor • 14.4k baud modem or higher for remote
communications • 1280 x 800 pixel or higher display
• Windows 7 or later operating system or • Minimum 1GB of RAM
Linux operating system • Minimum 4GB Drive
• Ethernet 10/100/1000 • USB Port 2.0 or higher
2. Introduction to Multiaqua and MCS-Magnum
REVISION 1
6
MENU KEY
LCD DISPLAY
FUNCTION KEYS
F1, F2, F3
ENTER KEY
ARROW KEYS
2.5. MCS- MAGNUM KEYPAD - Keys and their functions
• LCD DISPLAY - displays current condition of controller. Pressing the Menu key, displays the 10 available
Menu items.
• FUNCTION KEYS - F1, F2, F3 are used to Page Up and Page Down as shown
below, F2 - PG(page up), F3 - PG(page down). Function keys are also used when a numerical digit is
needed, F1 = 1, F2 = 2, F3 = 3.
• ARROW KEYS - used to move between items on screen and also as numerical digits when
needed.
• ENTER KEY - used to accept highlighed item on screen and to move to next screen.
• MENU KEY - used to move to main menu, also used as numerical digit 8.
REVISION 1
7
MULTIAQUALOGO SCREEN
THIS DISPLAYAPPEARS FORAFEW SECONDS
IT ISYOUR INDICATION THAT THE MAGNUM IS
OPERATIONAL
HH:MM C TNK / H TNK
CURRENT MHRC STATUS – POWER UP DELAY
UNIT IN POWER UP, TIME INTHIS STATE BASED ON SETPOINT #23
TEMP&FLOWTARGETSWITHCURRENTVALUESDISPLAYED
PRESSF3PAGEDOWN
3. MHRC Start Up Screens
(MCS-MAGNUM controller sensors are in manual mode for purpose of display)
The MCS-MAGNUM controller is a state computer, that is, decisions are made based upon setpoints, timers and
sensor inputs, the controller moves from one state to another. The controller will change states to ensure the
proper functioning of the MHRC package.
As we review the various states, we must remember the MHRC package consists of a number of different parts:
the compressors, evaporators and condensers plus the mode of operation.
The following sequence occurs at Power Up:
3.1. MHRC OPERATIONAL
3.2. MHRC UNIT STATUS – POWER UP
C TNK = COLD TANK TEMPERATURE
H TNK = HOT TANK TEMPERATURE
REVISION 1
8
HH:MM MAIN MENU
MENUKEY, SELECTSTATUS,PRESS() ENTERKEY
THIS WILLALLOWUSER TO DISPLAY DETAILS
OFTHE UNITSTATUS
PRESS F3 PG TO CONTINUE REVIEWING STATUS
HH:MM C TNK / H TNK
CURRENT MHRC STATUS – UNIT IS LOADED
TIME IN COOLMODE
SHOWS WANTED,ACTUAL, % LOADED, DELAY
AND RATE OF CHANGE
PRESS F3 PG TO CONTINUE REVIEWING STATUS
HH:MM C TNK / H TNK
COMPRESSOR 1 IS RUNNING
TIME IN THIS MODE
PROVIDES SUCTION, DISCHARGE & OILPSI WITH MOTOR %
AS WELLAS TEMPERATURES
PRESS F3 PG TO CONTINUE REVIEWING STATUS
4. Status Displays
The current status can be viewed on the LCD display by depressing the ‘Menu’ key and selecting STATUS, then
depressing the ‘ENTER KEY’. Or it can be accessed via the MCS-CONNECT program under status screen
section (See MCS-CONNECT Manual for further details).
4.1. PRESS MENU – SELECT STATUS
4.2. UNIT COMPRESSOR LOADED
4.3. COMPRESSOR 1 STATUS- RUNNING
REVISION 1
9
HH:MM CMP 1 STATUS C TNK / H TNK
COMPRESSOR IS RUNNING
PROVIDES SATURATED SUCTION, SUCTION SUPERHEAT,
SATURATED CONDENSING & DISCHARGE SUPERHEAT
PRESS F3 PG TO CONTINUE REVIEWING STATUS
HH:MM EXV 1 STATUS C TNK / H TNK
OPENING EXV 1
TIME IN THIS MODE
PROVIDES VALVE %, TIME TO NEXT CHANGE, SUPERHEAT & RATE OF
CHANGE, PROVICES CONTROL& TARGET
PRESS F3 PG TO CONTINUE REVIEWING STATUS
4.4. COMPRESSOR 1 STATUS- RUNNING
4.5. EXV VALVE OPENING
REVISION 1
10
HH:MM MENU, SELECT OUTPUTS
THIS WILLALLOW THE USERTO DISPLAY DETAILS
OF THE OUTPUTS STATUS
BOTHANALOG & DIGITAL
PRESS (ENTER KEY) TO SELECT
HH:MM OUTPUTS (RELAY & ANALOG)
THE 1ST FOUR RELAY OUTPUTSARE PRESENTED
KEYSALLOW THE USER TO SCROLL THROUGH THE DATA
FUNCTION KEY F1ALLOWS THE USER TO DISPLAYANALOG OUTPUTS
PAGE UP / DOWN DISPLAYS NEXT 4 OUTPUTS
HH:MM PRESSING F1 SELECTSANALOG OUTPUTS
THE SCREEN SHOWS 3ANALOG OUPUTS IN THIS UNIT
KEYSALLOW THE USER TO SCROLL THROUGH THE DATA
FUNCTION KEY F1ALLOWS THE USER TO DISPLAYANALOG OUTPUTS
PAGE UP / DOWN DISPLAYS NEXT OUTPUTS
5. Status Outputs
5.1. MAIN MENU - SELECT OUTPUTS STATUS
5.2. UNIT RELAYS STATUS
5.3. RELAY ANALOG STATUS
Indice
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