Haier GE ASH124UCDDA Installation Instructions Manual page 17

Installation Instructions
Step 3 - Installation of the Outdoor Unit (Cont.)
D. Leak Test
• Remove the cap on the service valve.
• Using a tank of dry nitrogen and approved regulator, charge
the system with 150 psig of dry nitrogen using mini-split
adapter to connect the valve.
• Check for leaks at the flare fittings using soap bubbles
or another detection device. If a leak is detected, make
repairs to the fittings and recheck. Proceed if no leaks are
detected within 3 minutes.
• Using the same tank/regulator, charge the system to
300 psig.
• Check for leaks as earlier. Proceed if no leaks are detected
within 3 minutes.
• Using the same tank/regulator, charge the system to
500 psig.
• Check for leaks as earlier. Keep system pressurized for at
least 20 minutes.
WARNING
Do not use acetylene, oxygen or
compressed air or mixtures containing air,
oxygen, or combustible gases for pressure testing. Do not
use mixtures of hydrogen containing refrigerant and air above
atmospheric pressure for pressure testing as they may
become flammable and could result in an explosion.
Refrigerant, when used as a trace gas, should only be mixed
with dry nitrogen for pressurizing units. Failure to follow
these recommendations could result in death or serious injury
as well as equipment or property damage.
E. System Evacuation
NOTE– Do not open service valve.
• Attach a manifold gauge, micron gauge, and vacuum
pump to the suction line port using adapter AD-87
(see illustration).
• Evacuate the system to at least 350 microns.
• Close the vacuum pump valve and allow temperature
to stabilize. Check micron gauge. If the gauge
rises 150 microns in 60 seconds, the evacuation is
incomplete or there is a leak in the system. If the
gauge does not rise 150 microns in 60 seconds, the
evacuation is complete.
• Once evacuation is complete, remove the adapter
and hose connection from the suction line port and
dry the area before reinstalling the cap. Freezing
conditions with soap solution still on the valve could
cause damage.
31-5000788 Rev. 0
CAUTION
Indoor unit
B
A
Outdoor unit
• Max. Elevation: A Max =
100ft / 30m (24k / 3036k / 4248k)
• In case the height of A is more than 15ft / 5m, an oil
trap should be installed every 16-23ft /5-7m
Length
Factory
Model Number
Charge
factory
charge
Unit oz
ASH124UCDDA 85
ASH3036UCDDA 88
ASH4248UCDDA 141
Outdoor unit
B
Indoor unit
A
Pipe
System
Additional
Maximum
of charge
pipe
rule*
length
ft oz/ft ft
165
25 0.5
230
System
Minimum
pipe
length
ft
10
17