Samsung SINGLE CNH ZDK Series Technical Data Book page 55

Installation
Air Handlers with DX type evaporator coils require liquid and suction piping sized in accordance with condensing unit
manufacturer's instructions. The evaporator coils have sweat copper connections. Refrigerant lines should be soldered
with silver solder or high temperature brazing alloy.
DRY NITROGEN MUST BE FLOWED THROUGH REFRIGERANT LINES DURING SOLDERING OPERATION.
REFER TO OUTDOOR UNIT INSTALLATION MANUALS FOR PRESSURE CHECKING AND VACUUM DRYING PROCEDURES.
There are two refrigerant pipes of differing diameters:
A smaller one for the liquid refrigerant
A larger one for the gas refrigerant
The inside of copper pipe must be clean & have no dust.
Prepare the connecting pipe referring to the list below.
Refrigerant pipe diameters
Liquid pipe
Gas pipe
Drain pipe installation
operating the unit by pouring water into the condensate pan. Cap unused connections.
2" minimum
(50.8mm minimum)
2" minimum
(50.8mm minimum)
CAUTION
When passing the drain hose through the hole drilled in the wall, make sure to avoid following cases.
CAUTION
AC012/018 NZDCH
1/4 (6.35)
1/2 (12.7)
2" minimum
(50.8mm minimum)
Anti-syphon air vent
Typical Condensate Traps
Make sure to keep the drain hose from getting tangled or loosened (on the connection part).
Insulate all condensate pipes connected to the indoor unit to prevent condensation formation.
Condensate formation on condensate pipes can lead to property damage and unsafe environment
conditions.
Since the draining is of natural drain type, install the drain hose in downward direction.
If you do not tie the drain hose with a cable tie, leakage may occur
Drain pipe may get clogged if there is any foreign substances within the drain pan, so you must remove
any foreign substances after completing the installation.
AC024 NZDCH AC030/036/042/048 NZDCH
1/4 (6.35) 3/8 (9.52)
5/8 (15.88) 5/8 (15.88)
Prime drain with water before
Refrigerant pipe
conections
Horizontal left
(right to left) drain
connections
Unit : inch(mm)
Horizontal right
(left to right)
drain pan
opening