Leak Test; Drain Pipe And Drain Hose Installation - Samsung Cassette Type Series User Manual

Performing Leak Test & Insulation

Leak test

LEAK TEST WITH NITROGEN(before opening valves)
In order to detect basic refrigerant leaks, before recreating the
vacuum and recirculating the R410A, it's responsible of installer
to pressurize the whole system with nitrogen(using a pressure
regulator) at a pressure above 4.1MPa(gauge).
LEAK TEST WITH R410A(after opening valves)
Before opening valves, discharge all the nitrogen into the
system and create vacuum. After opening valves check leaks
using a leak detector for refrigerant R410A.
 The designs and shape are subject
Leak check
Discharge all the nitrogen to create a vacuum and
charge the system.
Insulation
Once you have checked that there are no leaks in the system,
you can insulate the piping and hose.
1. To avoid condensation problems, place T13.0 or thicker
Acrylonitrile Butadien Rubber separately around each
refrigerant pipe.
Note
Always make the seam of pipes face upwards.
2.
Wind insulating tape around the pipes and drain hose
avoiding to compress the insulation too much.
Insulation cover pipe
Insulation pipe
Indoor unit
Be sure to overlap
the insulation
3.
Finish wrapping insulating tape around the rest of the
pipes leading to the outdoor unit.
4.
The pipes and electrical cables connecting the indoor unit
with the outdoor unit must be fixed to the wall with
suitable ducts.
All refrigerant connection must be accessible, in order
to permit either unit maintenance or removing it
completely.
to change according to the model.
No gap
NBR(T13.0 or thicker)
Must fit tightly against
body without any gap.
5.
Select the insulation of the refrigerant pipe.
 Insulate the gas side and liquid side pipe referring to the
thickness according to the pipe size.
 The thickness according to the pipe size is a standard of
the indoor temperature of 27°C and humidity of 80%.
If installing in an unfavorable conditions, use thicker one.
 Insulator's heat-resistance temperature should be more
than 120°C.
Minimum thickness
of insulation (mm)
Pipe size
(mm)
EPDM
PE foam
foam
Ø6.35~Ø15.88 13
- 25
Install the insulation not to get wider and use the

adhesives on the connection part of it to prevent
moisture from entering.
Wind the refrigerant pipe with insulation tape

if it is exposed to outside sunlight.
Install the refrigerant pipe respecting that the

insulation does not get thinner on the bent part or
hanger of pipe.
Add the additional insulation if the insulation plate

gets thinner.
Additional insulation
a
a×3

Drain pipe and Drain Hose Installation

1. Install the drain pipe as shortly as possible.
 Give a slightly slant to the drainpipe for proper drainage
of condensate water.
 There must be no gap on the connected part so that the
drainpipe is not separated from the flexible hose.
2. Insulate the drainpipe, and then fix it as indicated.
 Whole drainpipe should be insulated by 5t(or more)
insulation to prevent water condensation.
Insulation drainpipe
Indoor
Unit
Drain
hose port
Flexible
Band
hose
installing your air conditioner _25
Remarks
If you install the pipe
10
underground, at the seaside,
a spa or on the lake, use 1 grade
thicker one according to the
19
pipe size.
Hanger
Refrigerant pipe insulation
Band(Not supplied)
Adhesives
Band
Drainpipe