Checking the drainage
a. Open and lift the indoor unit front panel.
Hold the lower part of the left and right sides of the panel, pull
it against you and lift it stops with a full support from
the bracket.
panel bracket
b. Check the drainage
Carefully pour a glass of water on the evaporator.
Ensure the water flows through the drain hose of the indoor
unit without any leakage and goes out the drain exit.
drain hose
c. Drain piping
The drain hose should point downward for easy
drain flow.
downward slope
Do not place drain piping as indicated below:
do not rise
accumulated
drain water
tip of drain
hose dipped
in water
space less
than 50mm
water
leakage
water
leakage
water
leakage
Air purging and leakage test
Note: Any brazed connections must be completed before
evacuation and prior to the release of any refrigerant into the
refrigerating components.
Air and moisture in the refrigeration system have undesirable
effects as indicated below:
• System pressure increase
• Rise of the operating current.
• Cooling or heating efficiency drops.
• Moisture in the refrigeration circuit may freeze and block the
capillary tubing.
• Water may lead to corrosion of parts in the refrigeration
system.
Therefore, the indoor unit and tubing between the indoor and
outdoor units must be tested for leakage and evacuated to remove
any non-condensables and moisture from the system.
Air purging with a vacuum pump
• Preparation
Check that each tube (both liquid and gas side tubes) between the
indoor and outdoor units have been properly connected and all
wiring for the test has been completed. Remove the service valve
caps from both gas and liquid sides on the outdoor unit.
For detailed data of pipe length and refrigerant amount, please
refer to page 6.
caution
Both liquid and gas side service valves on the outdoor unit are kept
closed at this stage.
When relocating the unit, perform evacuation using a vacuum
pump. Make sure the refrigerant added into the air conditioner is
in liquid form.
Handling the stop valve
• Opening the stop valve:
Open the valve stem until it hits against the stopper. Do not try
to open it further.
• Closing the stop valve:
Securely tighten the valve stem with a special tool. Then
securely tighten the valve stem cap with a spanner or
the like.
Installation
22 Installation instructions
Kelvinator Air Conditioning