Haier HSU12VHG-B Service Manual Download

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Domestic air conditioner

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If the drain-elbow is used,

please attach it as gure. (Note:
Only for heat pump unit.)

Detach the service port’s cap of

3-way valve, the valve rod’s cap for 2-way valve

and 3-way’s, connect the service port into the projection of charge hose (Iow)

for gaugemanifold. Then connect the projection of charge hose (center) for gau-

gemanifold into vacuum pump.

Open the handle at Iow in

gaugemanifold, operate vacuum pump. If the scale-

moves of gause (Iow) reach vacuum condition in a moment, check 1. again.

Vacuumize for over 15min.And check the level gauge which should read -0.1MPa

(76 cm Hg) at Iow pressure side. After the completion of vacuumizing, close the

handle ‘Lo’ in gaugemanifold and stop the operation of the vacuum pump. Check

condition of the scale and hold it for 1-2min. If the scale-moves back in spite of

tightening, make aring work again, the return to the beginning of 3 .

Attaching Drain-Elbow

Purging Method:To use vacuum pump

Open

Open the valve rod for the 2-way valve to an angle of

anticlockwise 90 degrees.

After 6 seconds, close the 2-way valve and make the inspection of gas leakage.

No gas leakage?

Detach the charge hose

from the service port, open 2-way valve and 3-way. Turn

the valve rod anticlockwiseuntil hitting lightly.

In case of gas leakage, tighten parts of pipe connection. If

leakage stops, then proceed 6. steps

If it does not stop gas leakage, discharge whole refrigerants from the service

port. After aring work again and vacuumize, ll up prescribed

refrigerant from the gas cylinder.

Anti countercurrent joint

Gaugemanifold(for R410A)

2-way valve Liquid Side

3-way valve Gas Side

Vacuum pump(for R410A)

Tube(for R410A)

2-way valve

3-way valve

Open 90

2-way valve

3-way valve

2-way valve 3-way valve

2-way valve

3-way valve

Valve rod cap

Service port cap

To prevent the gas leakage, turn the service port’s cap, the valve rod’s cap for 2-wa

valve and 3-way’s a little more than the point where the torque increases suddenly

After attaching the each caps, check the gas leakage around the caps.

Step 1.

Step 2.

Step 3.

Step 7.

Step 6.

Step 4.

The power source must be exclusively used for air conditioner. (Over I0A)

In the case of installing an air conditioner in a moist place, please install an ea-

For installation in other places, use a circuit breaker as far as possible.

Pipe cutting is carried out with a pipe cutter and burs must be removed.

After inserting the are nut, aring work is carried out.

If the refrigerant of the air conditioner leaks, it is necessary to discharge all the
refrigerant. Vacuumize rst, then charge the liquid refrigerant into air conditio-
ner according to the amount marked on the name plate.

Please do not let other cooling medium, except speci ed one (R410A), or air
enter into the cooling circulation system. Otherwise, there will be abnormal
high pressure in the system to make it crack and lead to personal injuries.

Power Source Installation

Cutting and Flaring Work of Piping

Flare tooling die

1.Cut pipe

2.Remove burs

3.Insert the are nut

CAUTION

Flare tool for R410A

Conventional are tool

Clutch-type

clutch-type(Rigid-type) Wing-nut type (Imperial-type)

0~0.5mm

1.0~1.5mm

1.5~2.0mm

rth leakage breaker.

4.Flare pipe

Lean

Damage of are Crack

Partial

Too outside

On Drainage

It becomes

high midway.

The gap with the

ground is too small.

There is the bad
smell from a ditch

It waves.

The end is imm-
ersed in water.

Please install the drain hose so as to be downward slope without fail.
Please don’t do the drainage as shown below.

Please pour water in the drain pan of the indoor unit, and

is carried out surely to outdoor.

In case that the attached drain hose is in a room, please apply heat insulation to

Less than

5cm

con rm that drainage

it without fail.

Check Items for Test Run

Gas leak from pipe connecting?

Heat insulation of pipe connecting?

Are the connecting wirings of indoor and outdoor rmly

Is the connecting wiring of indoor and outdoor rmly xed?
Is drainage securely carried out?
Is the earth line securely connected?
Is the indoor unit securely xed?
Is power source voltage abided by the code?

Is there any noise?

Is the lamp normally lighting?
Are cooling and heating (when in heat pump) performed normally?

Is the operation of room temperature regulator normal?

Please kindly explain to our customers how to operate
through the instruction manual.

Check for Installation and Test Run

inserted to the terminal block?

1+2=

R410A

This product contains fluorinated greenhouse gases covered by
the Kyoto Protocol. Do not vent into the atmosphere.
Refrigerant type:R410A
GWP* value:1975
GWP=global warming potential
Please fill in with indelible ink,
• 1 the factory refrigerant charge of the product
• 2 the additional refrigerant amount charged in the field and
• 1+2 the total refrigerant charge
on the refrigerant charge label supplied with the product.
The filled out label must be adhered in the proximity of the product
charging port (e.g. onto the inside of the stop value cover).
A contains fluorinated greenhouse gases covered by the Kyoto
Protocol
B factory refrigerant charge of the product: see unit name plate
C additional refrigerant amount charged in the field
D total refrigerant charge
E outdoor unit
F refrigerant cylinder and manifold for charging