Samsung CNH 4DB Series Technical Data Book page 103

Installation
Fixing the installation plate
You can install the indoor unit on a wall, window frame, or gypsum
board.
WARNING
• Make sure that the wall, window frame, or gypsum board can
withstand the weight of the indoor unit. If you install the indoor
unit in a place where it is not strong enough to withstand the
unit's weight, the unit could fall and cause injury.
When fixing the indoor unit on a wall
Fix the installation plate to the wall giving attention to the weight
of the indoor unit.
Plastic anchor
0.79 inch (20 mm)
A
6.14
(156)
NOTE
• If you mount the plate to a concrete wall using plastic anchors,
make sure that gaps between the wall and the plate, created
by projected anchor, is less than 0.79 inch (20 mm).
When fixing the indoor unit on a window frame
1 Determine the positions of the wooden uprights to be
attached to the window frame.
2 Attach the wooden uprights to the window frame giving
attention to the weight of the indoor unit.
3 Attach the installation plate to the wooden upright using
tapping screws.
When fixing the indoor unit on a gypsum board
1 Use stud finder to find out locations of the studs.
2 Fix the plate hanger on two studs.
CAUTION
• If you fix the indoor unit on a gypsum board, use only specified
anchor bolts on reference positions. Otherwise, the gypsum
surrounding the joints may crumble over time and cause
the screws to be loosened and stripped. This may lmead to
physical injury or equipment damage.
• Search for other spots if there are less than two studs, or
the distance between the studs are different from the plate
hanger.
• Fix the installation plate without inclining to one side.
B
A
F E
Unit : inch (mm)
B C D E F
2.64 14.33 1.36 2.54 0.77
(67) (364) (34.5) (64.5) (19.5)
Pipe bundle hole: Ø 2.56 inch (65 mm)
Connecting the refrigerant pipe
Connect indoor and outdoor units with field-supplied copper pipes
by means of flare connections. Use insulated seamless refrigeration
grade pipe only, (Cu DHP type according to ISO1337), degreased and
deoxidized, suitable for operating pressures of at least 4200 kPa and
for burst pressure of at least 20700 kPa. Under no circumstances
must sanitary type copper pipe be used.
There are 2 refrigerant pipes of different diameters:
• The smaller one is for the liquid refrigerant
• The larger one is for the gas refrigerant
A short pipe is already fitted to the air conditioner. You may need to
extend the pipe using the assembly pipe. (optional)
The connection procedure for the refrigerant pipe varies according
to the exit position of the pipe when facing the wall:
• Left(A)
C
• Right(B)
D
• Rear
Left (A)
1 Cut out the appropriate knock-out piece on the rear of the
indoor unit unless you connect the pipe directly from the rear.
2 Smooth the cut edges.
3 Remove the protection caps of the pipes and connect the
assembly pipe to each pipe. Tighten the nuts first with your
hands, and then with a torque wrench, applying the following
torque:
Refrigerant oil
wrench
Outer diameter
(inch (mm))
Ø 1/4 (6.35)
Ø 3/8 (9.52)
Ø 1/2 (12.70)
Ø 5/8 (15.88)
NOTE
• If you want to shorten or extend pipes, refer to Step 6
Cutting or flaring the pipes.
Right (B)
Spanner
Torque
Flare nut Union
Torque Torque
(lbf•ft (N•m)) (kgf•cm)
10.3 to 13.3 (14 to 18) 140~180
25.1 to 31.0 (34 to 42) 350~430
36.1 to 45.0 (49 to 61) 500~620
50.2 to 60.5 (68 to 82) 690~830