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Contents 4
Replacing the heat exchanger unit with couplers................................................................................ 63
Heat exchanger unit (HEX) with ball valve .................................................................................................. 67
Removing the heat exchanger unit with ball valves............................................................................. 68
Replacing the heat exchanger unit with ball valves............................................................................. 72
HEX coupling.......................................................................................................................................... 77
Removing the HEX coupling ............................................................................................................ 78
Replacing the HEX coupling............................................................................................................ 80
Magnetic solenoid valve .......................................................................................................................... 82
Removing the magnetic solenoid valve ............................................................................................. 82
Replacing the magnetic solenoid valve ............................................................................................. 84
Management module............................................................................................................................... 85
Removing the management module..................................................................................................85
Replacing the management module .................................................................................................86
Operator display..................................................................................................................................... 88
Removing the operator display........................................................................................................88
Replacing the operator display........................................................................................................ 91
Power inlet box....................................................................................................................................... 93
Relocating the power inlet box ........................................................................................................ 93
Relocating the power inlet box back into position .............................................................................. 95
Water group controller ............................................................................................................................ 97
Removing the water group controller................................................................................................ 97
Replacing the water group controller.............................................................................................. 100
Water inlet coupling.............................................................................................................................. 102
Removing the water inlet coupling ................................................................................................. 102
Replacing the water inlet coupling ................................................................................................. 105
Water temperature sensor ...................................................................................................................... 107
Removing the water temperature sensor.......................................................................................... 107
Replacing the water temperature sensor ......................................................................................... 109
Operation checklist................................................................................................................................ 111
Restoring power to the MCS unit ................................................................................................... 111
Restoring water flow ....................................................................................................................112
Technician repair removal and replacement procedures................................................................ 113
Miscellaneous hardware kit overview....................................................................................................... 113
Technician repair required tools .................................................................................................... 114
Flow meter ........................................................................................................................................... 114
Removing the flow meter .............................................................................................................. 114
Replacing the flow meter ..............................................................................................................117
Magnetic valve ..................................................................................................................................... 118
Removing the magnetic valve diaphragm and spring ....................................................................... 118
Replacing the magnetic valve diaphragm and spring ....................................................................... 120
Upgrading procedures .............................................................................................................. 123
Viewing the upgrade procedures video.................................................................................................... 123
Upgrading the HEX coupler.................................................................................................................... 123
Removing the HEX coupler............................................................................................................ 123
Replacing the HEX coupler............................................................................................................ 128
Upgrading the HEX hose coupler............................................................................................................. 132
Removing the HEX hose coupler .................................................................................................... 132
Replacing the HEX hose coupler .................................................................................................... 132
Maintenance............................................................................................................................ 139
Maintenance and service ....................................................................................................................... 139
Air and water heat exchanger maintenance.................................................................................... 139