Expelling the air
After the pipe side connection is complete, proceed as follows.
★
Outdoor unit refrigerant discharging method
Quickly tighten and
connect the nut.
The installing torque
is the same as that
of the gas end of
the indoor unit.
Fully open the
spindles of the
liquid end and of
the other two ends.
Check that all indoor
and outdoor
connections are free
of air leakage.
Wait for
8 second
Loosen the
temporarily fastened
nut by half turn.
Loosen the Hex
wrench by half turn.
Gas part
Liquid part
Before working on the air conditioner, remove the cover of the stop valve(gas and
liquid valves)and be sure to retighten it afterwards (to prevent the potential air leakage).
1. To prevent air leakage and spilling tighten
all connecting nut of all flare tubes.
2. Connect the stop valve, charge hose, manifold
valve and vacuum pump.
3. Fully open the handle Lo of the manifold valve
and apply vacuum for at least 15 minutes and
check that the compound vacuum gauge reads
-0.1MPa(-76cmHg).
4. After applying vacuum, fully open the stop
valve with a hex wrench.
5. Check that both indoor and outdoor
connections are free of air leakage.
Pressure
gauge
Charge
hose
-
76cmHg
manifold valve
Compound meter
Handle Hi
Handle Lo
Vacuum pump
(liquid valve)
(gas valve)
Stop valve Stop valve
When the unit is heating, the condensing water and defrosting
water can be out reliably through the drain house.
Installation
：
Install the outdoor drain elbow in
Φ
25 hole on the base
plate, and joint the drain hose to the elbow, so that the
waste water formed in the outdoor unit can be drained
out to a proper plate.
Chassis
Outdoor drain elbow
Outdoor condensation drainage(Heat pump type only)
★
Vacuum Pumping Method (R410A refrigerant evacuation must use the vacuum
pumping method)
Charge
hose
Install outdoor unit
Test Operation preparation
※
V
erify that all piping and connection cables are well connected.
※
C
onfirm that the values at the gas side and the liquid-side are fully open.
※
C
onnect the power cord to an independent power socket.
※
I
nstall batteries in remote control.
Test Operation method
1. Turn on the power and push the ON/OFF switch button of the remote controller to
start the air conditioner.
2. Select COOL, HEAT (not available on cool-only models
)
, SWING and other
operation modes with the remote controller and see if the operation is ok.
Check after installation and test operation
Check after installation
Test Operation
★
Electrical Safety Check
1. If the supply voltage is as required
.
2. If there is any faulty connection or misconnection in each of the power, signal and
grounding wires.
3. If the grounding wire of the air conditioner is securely grounded.
★
Installation Safety Check
1. If the installation is secure.
2. If the water drain is smooth.
3. If the wiring and piping are correctly installed.
4. Check that no foreign matter or tools are left inside the unit.
★
Leak test of the refrigerant
Depending on the installation method, the following methods may be used to check
for suspect leak, on areas such as the four connections of the outdoor unit and the
cores of the cut-off valves and t-valves:
1.Bubble method: Apply or spray a uniform layer of soap water over the suspected
leak spot and observe carefully for bubble.
2.Instrument method: Checking for leak by pointing the probe of the leak detector
according to the instruction to the suspect points of leak.
20
21
Summary of Contents for Econo Plus 15
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