Haier HPU-90CA03T3 operation manual Matters needing attention

Installation procedure

Outdoor unit

Matters needing attention

Never use oxygen,flamable and poisonous gases for the leak test.

Low-pressure High-pressure

gauge gauge

			Three-way valve fully
Indoor	Outdoor		closed(gas side)	VL VH
				Gauge distributor
Solder joint		Solder joint	Access hole
				6.4
				Copper

pipe

Tightly	Solder
closed
	joint	Access hole

6.4Relief valve

Copper pipe

bottle

Indoor unit

Outdoor unit

Nitrogen

Three-way valve fully closed liquid side

Detailed diagram of the three-way valve

To the gauge
distributor		(Gas side)three-way valve
	(Liquid side)three-way valve
	To the unit	(Gas side )
		access hole
(Liquid side)access hole

To the unit

Field tube
installation	Field tube
	installation

Step 1:Charge for more than 3 minutes under 0.3MPa(3.0kg/cm2g) Step 2:Charge for more than 3 minutes under 1.5MPa(15kg/cm2g)

--Serious leakage may be found.

Step 3:Charge for more than 24 hours under 3.0MPa(30kg/cm2g) --Small leakage may be found.

Check for pressure decrease Without pressure decrease-Pass

With pressure decrease-Check for leakge.

There will be a 0.01MPa(0.1kg/cm2g) pressure change for every 1 C ambient temperature change during the 24-hour pressure charge.It should be corrected during the test.

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