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Hisense AVWW-76UE(8)SB Instalation And Maintenace Manual page 33

Water-source multi-split system heat pump air conditioners - ws-multi set-free

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Before commissioning, reconfirm that all water pipe
work is in correct states, water filter has been settled
on water entry side and water flow switch has been
installed properly.
Open shut-off valve and make sure that the plate heat
exchanger is filled with circulating water. Start water
pump and open exhaust valve to ensure that all air is
exhausted from pipe.
Read pressure gauges and thermometers on water
inlet and outlet to confirm normal water-line operation,
proper water flow rate and correct switching in water
system.
After the initial commissioning, clear water filter and
ensure no filter clogging .
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