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Installation procedures
4.Circuit connection
when making circuit connnecting,please refer to local electric law,ensuring circuit installation accords with
regulationg and requirement.
Besides,pay attention to followed cue:
1.Before wiring,check and ensure that rated voltage are matched with nameplate value.
2.every unit should has special power supply connection,and with overcurrent protection in special circuit,power
source switch and circuit open circuit switch.
3.unit must be grounded,prevent that improper installation may occur danger.
4.all circuit must be connected firmly.
circuit has to contact with refrigerant pipe compressor and fan motor.
5.Trial operation
Trial operation notice:
(1)before trial operation,open the stop valve comletely on connection pipe between indoor and outdoor unit.
(2)ensuring system is grounded,and the grounding line mustn't be connected with coal gas pipe tap water
pipe lightning rod or telephone wire.if connect wrongly,there may cause electic-shock accidient.
(3)power supply is supplied ahead of 6h before first operation,in this way,crankcase could preheat.
(4)check if power source signal wire connection between indoor and outdoor unit are correct.(thirple phase
power supply sets phase sequence protection function,if phase sequence is wrong,it will alarm,need adjust
power source sequence again. )
(5)after running normal,see if master unit's high low pressure are normal.
(6)if indoor condesening water is normal,air oulet inlet temp. difference 8~12 .
(7)if air return pipe dued is normal.
(8)if all air outlet air volume temp.is normal.
(8)if unit has abnormal noise.
(9)trial operation should maintain at least 2h,outdoor unit run for long time,check if condensing water drainage
normal.
6.maintenance of outdoor unit
1.Usually,outdoor unit is checked each quarter,and clear heat exchanger surface once.however,if unit installation
location is oil smog dirt too much,heat exchanger must be cleaned by air conditioner professinal technician,to
ensure that heat exchange sufficiently and running normally,or else,unit life will decrease.
2.when unit appears failure,first cut off power source and contact local dealer,it is unallowed that detaching
the unit at random which will cause failure badly.
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