Multiaqua MHRC2 - User Manual

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Multiaqua, Inc.

306 Hagood Street, Easley, South Carolina 29640 • Phone: (864) 850-8990 Fax: (864) 850-8995

with MCS MAGNUM Controls

MHRC2 CHILLER

OPERATION MANUAL

MHRC2

Rev.62016NRC

Main Page

Table of Contents3
Introduction to Multiaqua and MCS-Magnum5
About the Multiaqua Heat Reclaim Chiller (MHRC)5
About the MCS-MAGNUM5
About PC Support Software for MCS-MAGNUM5
Requirements for PC Software5
MCS- MAGNUM KEYPAD - Keys and Their Functions6
MHRC Start up Screens7
Mhrc Operational7
Mhrc Unit Status - Power up7
Status Displays8
Press Menu - Select Status8
Unit Compressor Loaded8
Compressor 1 Status- Running8
Compressor 1 Status- Running9
Exv Valve Opening9
Main Menu - Select Outputs Status10
Unit Relays Status10
Relay Analog Status10
Status Inputs11
Press Menu - Select Inputs11
Inputs (Sensor Status)11
Input Value for M1 Sensor11
Change Value Requires High Authorization11
Press Menu - Select Alarms12
Alarms12
Graphs13
Press Menu - Select Graphs13
Graph 1St Sensor Input13
Graph Sample Rate13
Graph Edit Sample Rate13
Press Menu - Select Set Points14
Display Set Points14
Edit Setpoint14
Higher Auth Needed14
Service Tools15
Press Menu - Select Serv Tools15
Serv Tools Options15
System Info Option15
System Info Screen 115
System Info Screen 216
System Info Screen 316
System Info Screen 416
System Info Screen 516
Press Menu - Select Lckout Rst17
Lockout Alarms17
Current Lockouts17
Press Menu - Select Lckout Alarm18
1St Lckout Alarm Displayed18
Press Menu - Select Passwords19
Enter Password19
Enter to Get Authorized19
Password Accepted19
Main Menu Functin Keys20
Main Menu20
Help Display20
Mhrc Large Type Display20
Large Type Display20
Mhrc Modes21
Unit in Power up21
Run- I/O Loss21
Unit in Lockout21
Unit Is off21
Unit Is Holding21
Unit Unloading21
Unit Is Loading22
Run/Stop Sw off22
Scheduled off22
Off-No Flow22
Unit Is Unloaded22
Unit Is Loaded22
Switching Modes22
MHRC Sequence of Operation23
MCS-MAGNUM EXV Suction/Discharge Superheat Logic25
EXV Related Setpoints28
EXV Control States28
MAGNUM Condenser Control Strategy29
Mcs-Connect Control Status Display30
MHRC MAGNUM Setpoints31
MHRC MAGNUM Alarms and Safeties35
Introduction35
Information Only Alarms35
System Generated Alarms35
Alarms as a Result of User Actions35
Alarms Generated by the Control Algorithm36
MHRC MAGNUM System Alarms36
Alarms Are Generated by the MHRC MAGNUM Control Algorithm36
Configuration Problem Alarms36
MCS I/O Network Problem Alarms36
Sensors Fault Alarms36
MHRC Unit Safeties37
Introduction37
Unit Safeties37
MHRC Compressor Safeties38
Introduction38
Compressor Safeties38
Condenser Fan Safeties39
Heating Stages Safeties40
Evaporator Safeties40
APPENDIX A - MAGNUM no Run Capacity Run States41
APPENDIX B - MHRC Refrigerant Circuit Layout42
APPENDIX C - Controls Layout Page 2 of 243
APPENDIX D - Wiring Diagram44
APPENDIX E - MHRC2 Frequency Drive Drawings46
APPENDIX F - Configuration49
APPENDIX G - MCS Trouble Shooting Reference63

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Multiaqua MHRC2 Specifications

General

Brand	Multiaqua
Model	MHRC2
Category	Chiller
Language	English

Multiaqua MHRC2 - User Manual

Table of Contents

Multiaqua MHRC2 Specifications