Haier AS12NB1HRA-White Service Manual page 41

Connection
Loosen the screws on terminal block and insert the wires fully into terminal
block, then tighten the screws.
If wiring is not correct, the unit will not operate properly and it could cause a
defect in the unit.
Fix the cable with a clamp.
Attaching Drain-Elbow
If the drain-elbow is used,
please attach as shown in figure.
(Note: Only for heat pump unit.)
Purging Method:To use vacuum pump
1.
Detach the service port's cap of
3-way valve, and the valve cap for 2-way valve
and 3-way valve. Connect the service port to the low side of the gauge manifold
and connect the vacuum pump to the center port of the manifold.
2.
Open the handle on the low side of the gauge manifold and operate vacuum pump.
3. Vacuum the tubing for at least 15 minutes. The vacuum level on the low side gauge
should be 29.9 in of Hg, 76 cm of Hg, 0.1 MPa. when vacuuming is complete, close
the valve on the manifold and turn off the vacuum pump. The vacuum level should
hold for 1-2 minutes. If the vacuum level does not hold, check the flared connections
and repeat this step.
4.
Open the 2-way valve 1/4 turn. After 5-6 seconds, close the valve and inspect for
leaks with a leak detector or soap solution.
5.
No gas leakage? Go to step 6.
In case of a leak, try tightening the flare connections to fix the leak. If the
leak stops, go to step 6. If the leak continues, check the flare connections
and repair as needed, then go back to step 3. then proceed step 6. If leak
continues, remove the refrigerant used for the leakage check and flare
tubes again. Repeat vacuum and leak and if no leakage, proceed to step 6.
6.
from the service port, open 2-way valve and 3-way
Detach the charge hose
valve completely.
7.
To prevent the gas leakage, replace the service port and valve caps.
8.
After attaching the caps, check for leakage around the caps.
Step 1.
2-way valve Liquid Side
3-way valve Gas Side
Gaugemanifold(for R410A)
Gauge manifold
Vacuum pump
Tube(for R410A)
Step 4.
2-way valve
3-way valve
O
Open 90
2-way valve 3-way valve
CAUTION
If the refrigerant of the air conditioner leaks, it is necessary to discharge all the
refrigerant. Repair the leak, vacuum the unit then charge the liquid refrigerant
into air conditioner according to the amount marked on the name plate.
Please do not let other cooling medium, except specified one (R410A), or air
enter into the cooling circulation system. This could cause high pressure and
could cause a leak and lead to personal injuries.
Step 2.
Open
Step 3.
Close
Step 6. 2-way valve
3-way valve
2-way valve
Step 7.
3-way valve
Valve cap
Valve cap
Service port cap
Power Source Installation
The power source must be exclusively used for air conditioner.
In the case of installing an air conditioner in a moist place, please install an ea-
rth leakage breaker.(GFCI)
For installation in other places, use an HVACR circuit breaker of time delay fuse.
On Drainage
Please install the drain hose and ensure downward flow.
Please don't do the drainage as shown below.
It becomes
The end is imm-
high midway.
ersed in water.
Please pour water in the drain pan of the indoor unit, and
is proper.
In case that the attached drain hose is in a room, please apply insulation to
to the hose to prevent condensation.
Refrigerant charge label
Contains fluorinated greenhouse gases
covered by the Kyoto Protocol
R410A
2
F
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
Check for Installation and Test Run
Please kindly explain to our customers how to operate
through the instruction manual.
Check Items for Test Run
Gas leak from interconnecting tubing?
Installation is on the interconnecting tubing?
Are the connecting wirings of indoor and outdoor firmly
inserted to the terminal block?
Is the connecting wiring of indoor and outdoor firmly fixed?
Is drainage securely carried out?
Is the ground wire securely connected?
Is the indoor unit securely fixed?
Is power source voltage the local codes?
Is there any noise?
Are the lights near the unit working normally?
Are cooling and heating (when in heat pump) performing normally?
Is the operation of room temperature control normal?
39
System configuration
Less than
5cm
It waves. The gap with the There is the bad
ground is too small. smell from a ditch
confirm that drainage
A
1= kg
B
2= kg
C
1
1+2= kg
D
E
Put check mark
Domestic air conditioner
in boxes