Interlocking procedure..................................................................................................................... 87
Operation.................................................................................................................................... 103
YHAU-CGN/H-CXR(M) control center............................................................................................ 103
Common items................................................................................................................................ 103
Change numeric values.................................................................................................................. 105
Main screen...................................................................................................................................... 106
Operating status.............................................................................................................................. 106
Control parameter........................................................................................................................... 128
Valve operation................................................................................................................................ 129
Date and time.................................................................................................................................. 130
Operation switch............................................................................................................................. 131
Select language............................................................................................................................... 131
Weishaupt burner operation LCD................................................................................................. 132
Single loop controller...................................................................................................................... 132
Maintenance............................................................................................................................... 144
Exhaust duct inspection................................................................................................................. 144
Valve inspection............................................................................................................................... 144
Solenoid valves................................................................................................................................ 145
Air purge valves and drain valves................................................................................................. 145
Purge valves..................................................................................................................................... 145
Start the chiller-heater after it has been stopped for a long period......................................... 145
Checks after operation starts........................................................................................................ 145
Purge procedure.............................................................................................................................. 146
Capacity check method of service vacuum pump....................................................................... 146
Manual method to purge non-condensable gas directly from absorber................................. 147
Manual method to purge non-condensable gas from the purge tank.................................... 148
Automatic method to purge non-condensable gas from the purge tank................................ 148
Refrigerant refining method.......................................................................................................... 152
Manual refrigerant blow down and diluting method................................................................. 153
iii
Model YHAU-CGN/H-CXR(M)Double Effect Direct Fired Small Absorption Chiller-Heater
