comprehensive maintenance for hvac equipments , comprehensive maintenance for hvac equipments installed indian institute of information technology and management kerala , technocity campus , pallippuram , thiruvananthapuram , : lg make variable refrigerant flow/ volume ( vrf/v ) outdoor units with complete inverter compressorsi ) 58 hp-1 no , 56hp-1 no , 54hp-1 no , 46hp-1 no , 36hp-1 no , 22hp- 1 no , 14hp-1 no4 way cassette type indoor unit0 . 8 tr ( compact type ) -30 nos , 1tr-6 nos , 1 . 7tr-8 nos , centralized remote controller ( lg ) , double skin air handling unitahu tag ----- cooling load --- air qty . --- cooling coil i ) ah-gf-01------ 17 -------11500 4 , ii ) ah-gf-02------ 21 . 7 -------14700 4 , iii ) ah-1f-01/02------ 15 . 9 -------10600 4 , iv ) ah-1f-03------ 16 . 6 -------11300 4 , v ) ah-1f-04/05------ 11 . 3 -------7600 4 , vi ) ah-2f-01------ 17 . 9 -------12170 4 , vii ) ah-2f-02------ 17 . 1 -------11600 4 , viii ) ah-2f-03------ 13 . 3 -------9000 4 , ix ) ah-2f-04/05------ 14 . 7 ------10000 4 , x ) tfa-2f-01------ 4 . 5 ------1360 8 , heat recovery units comprising of heat recovery wheelcmh espi ) 4896 25 , ii ) 3672 --- 25 , iii ) 3678 --- 25 , direct expansion microprocessor based bottom , discharge precision a/c unitsi ) 17 . 2 kw , 4160 cmh ( precision ) , 3 . 01: l . t . panel ( i ) acdb-01 ( ref: 3 . 01 ( i ) for full specification ) , ( ii ) acdb-02 ( ref: 3 . 01 ( ii ) for full specification ) , ( iii ) acsdb-01 ( ref: 3 . 01 ( iii ) for full specification ) , ( iv ) acsdb-02 ( ref: 3 . 01 ( iv ) for full specification ) , ( v ) acsdb-03 ( ref: 3 . 01 ( v ) for full specification ) , ( vi ) acsdb-04 ( ref: 3 . 01 ( vi ) for full specification ) , ( vii ) acsdb-05 ( ref: 3 . 01 ( vii ) for full specification ) , ( viii ) acsdb-06 ( ref: 3 . 01 ( viii ) for full specification ) , 2 tr bluestar split ac , motorised fire damper