Haier HSU-18CR03 Installation Manual

Also see for HSU-18CR03: Operation manual

Contents

Outdoor unit6.Purging Method:To use vacuum pump73-way valve2-way valve6.35mm(1/4") 12.7mm(1/2")Push the air out of the indoor unitand piping as followes:(1) Remove the valve cap on 2-wayvalve in outdoor unit.(2) Loosen by 1/2 turn the flare nut ofgas pipe, which is conneted to3-way valve.(3) Loosen 2-way valve by 90o usinghexagon wrench, and after approx.10 sec tighten it up. Gas comes outthrough flare nut on wide pipe. If nogas is discharged, tighten flare nutwith specified torque.(4) Open 2-way and 3-way valvesusing specified torque.(5) Tighten the caps on the valveswith specified torque.Valve rodValve cap7-920-25Tighten torque N.mWhen connecting pipe exceeds 5 meters, 20g refrigerant shall be addedper exceeding meter. Charge according to the following list.Piping lengthAdditional amount5m 7m 10mNo need 40gDuring this procedure, 50g refrigerant will be discharged in piping.(This must be strictly controlled within 90o and 10 sec.)Brand new outdoor unit is charged 50g more refrigerant than regulated weight.Only for first installation, this extra 50g can be used to purge air in pipes.Note: When extending piping, air inside piping shall be removed by using externalrefrigerant gas, charge according to the following list.100gHSU-18CR03(T3)

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