Loop Water Controller Overview MCS LWC MAGNUM

1. Loop Water Controller Overview MCS LWC MAGNUM REV. C - 1/4/2020

2. MCS LWC MAGNUM ORIGINAL CONCEPTS • Designed to Control Loop Systems • Build to be generic and handle many configurations of Loop Controllers • Type of Loop, WATER WITH PUMP, AIR WITH FANS is selected • Enable ice making / cooling stages • Enable heating stages • Handle multiple VFD (variable-frequency drive) • Allows for peak hour scheduling • Provide control based upon loop (similar to circuit control) • Could be used as a front end to other MCS Controllers

3. MCS LWC MAGNUM OVERVIEW • Provides a general loop control system • Provides flexibility with multiple options • Control each loop independently • Actual control of heating/cooling stages or provide run enable indication to other loops or systems • Provides meaningful status of the system

4. MCS LWC MAGNUM • Supports up to 8 individual loops • Supports up to 12 pumps or fans per loop • Supports 16 cooling/ice making an heating stages per loop • Supports 1 VFD(variable frequency drive) for pumps or fans per loop with unique control sensor • Supports 1 VFD for heating stages per loop • Supports 1 VFD for cooling stages per loop

5. LWC MCS-CONFIG SETUP Since each loop can be named it is suggested that the set points names relate to the loop name.

6. MCS-CONFIG- Setpoints Color Coded Setpoints match color code of Chillers

7. MCS-CONFIG- Setpoints cont. Control set points #21- 45 for loop 1 These set points will be repeated for the other loops: (note the different coloring of the # column on next page and also in MCS-CONNECT) LOOP 2 Set points #46-70 LOOP 3 Set points #71-95 LOOP 4 Set points #96-120 LOOP 5 Set points #121-145 LOOP 6 Set points #146-170 LOOP 7 Set points #171-195 LOOP 8 Set points #196-220 Set points #221-255 are available to be used in user logic points.

8. MCS-CONNECT – LOOP STATUS Color Coded Chillers Unit status

9. MCS LWC Magnum • Supports control of loops on: peak load schedules, on or off all day or based on daily schedule • Supports 2 daily schedules per loop • Supports separate run/stop and run override per loop • Supports individual setpoints per loop • Supports individual state names (status) per loop

10. MCS LWC Magnum • Supports up to 80 Relay Outputs • Supports up to 112 Sensors Inputs • Supports up 28Analog Outputs • Supports 255 Set points • Supports storage of last 100 alarms • Supports 1008 History Samples for all inputs & outputs

11. LWC Options (Specified by loop) • Individual setpoints for each loop • Individual loops controlled on: - Run/Stop indicator (digital and/or network) - Run/Stop indicator plus temperature • Low Ambient control: - None - Loop off - Run only pumps - Enable loop to run

12. LWC Options (Specified by loop) • Control of primary and backup pumps or fans with rotation • Control of cooling loops and enable rotation • Separate Control Zones with ROC control logic for cooling and heating

13. LWC Schedule • Schedule: - Run loop on a day schedule ON ALL DAY OFF ALL DAYON SCHEDULE Do not run on peak demand hours

14. LWC Options • Loop override indicator • Ice making options, control on: - Temperature only - Ice level in the tank or - Both temperature and ice level • Increase Heat Target based upon Ambient • Adjust Cool & Heat Targets based upon sensor input • Adjust Pump Targets based upon sensor input

15. Magnum Advantages The Magnum master board may handle entire applications (large systems with ice making capability may require additional boards): • Number of Inputs (16: 12 either analog or digital & 4 fixed digital ) • Number of Outputs (10) • Number of Analog Outputs (4) • Loop enabling based upon RO Magnum Display: • Designed to show Loop Control data, not chiller data • Loops are identified by their name • Loop & pump status is displayed • VFD speed is displayed • Graphing capability All of the standard Magnum advantages!

16. LWC Sample Applications • Provides pump control with heating and coolingwith ice making (Edgewood School) • Provides pump control with VFD and backup rotation • Provides fan control with VFD - multiple fans with backup and rotation • Provides pump control and turn on run enable indicator to other chiller packages • Provides control to an outside air system and modulate the damper, enable cooling or heating as needed • Provides control of units with cooling, heating and reheat functions

17. LWC Review Edgewood School • Three loopsLoop #1, building loop • Run/Stop with override • No temperature control on start • Ambient temperature option • Day of week schedule • Control on supply temperature to the building • 2 pumps max 1 control on pressure differential with rotation • 1 cooling stage with valve (control temperature to building)

18. LWC Review Edgewood School • Three loopsLoop #1 determines which chiller (loop#2 or #3) will be enabled. Loop #2 & 3, chiller loops: • Run/Stop with override • No temperature control on start • No ambient temperature option • Peak Off Schedule • Control on ice tank temperature • 1 pumps max 1 control on pressure differential with rotation • 1 cooling stage enable chiller to make ice

19. LWC Edgewood New Application • Control two class rooms independently • Individual run/stop & schedules • 1 pump with cooling (valve) & heating stages per room • Set up 2 loops to control – 1 per room • PROBLEM: temperature OK but humidity was too high • Added a temperature sensor before heating coil per room • Added a loop per room with enthalpy control

20. LWC Edgewood New Application • Control the following 2 chiller packages: Rotate the chiller packages 1 pump 1 chiller enable 1 condenser pump 1 condenser fan And if running package cannot maintain the cooling temperature after 5 minutes enable the second unit And if unit running fails switch to the other unit

21. LWC Edgewood- MCS CONTROLLER

22. LWC Edgewood- MCS CONTROLLER

23. For additional information please visit our website www.mcscontrols.com Or call MCS at 239-694-0089 5580 Enterprise Pkwy. Fort Myers, FL 33905 Office: 239-694-0089 Fax: 239-694-0031 www.mcscontrols.com