Samsung CNH HDB Series Technical Data Book page 93

Installation
Duct
Spacing requirements
Space requirements for installation & service.
Construction Standard for Inspection opening
An inspection opening is required for service and unit replacement.
1) If the ceiling is a grid type, an inspection opening is not required.
2) If the ceiling is plaster board, an inspection opening is required. The size of the opening will vary based on the height inside the
ceiling.
a. Height is more than 1.64ft (0.5m): Only "B" [Inspection for PBA] is applied.
b. Height is less than 1.64ft (0.5m): Both "A"&"B" are applied.
c. "A"&"B" are inspection opening .
"A"=W+3.94 inch (100 mm)
• You must have 0.79 inch (20 mm) or more space between the ceiling and the bottom of indoor unit to prevent transmission of noise and
vibration from the unit into the space.
• It is possible to install the unit at an height of between 7.2~8.2 ft (2.2~2.5m )from the ground,if the unit has a duct with a well defined
length [11.81inch (300 mm) or more], to avoid fan motor blower contact.
• If you install the cassette or duct type indoor unit on the ceiling with humidity over 80%, you must apply extra 0.39 inch (10mm) of
polyethylene foam or other insulation with similar material on the body of the indoor unit.
Optional: Insulating the body of the
indoor unit
Front
Unit Width(W)
"B"=19.69 inch (500 mm)
B
D
Back
A C
Thickness: more than 0.39 inch ( 10mm )
AC018BNHDCH
AC024BNHDCH
AC030BNHDCH
Indoor
Unit
47.24X27.56X9.84
(1200X700X250)
47.24X27.5
A
(1200X700)
47.24X27.5
B
(1200X700)
27.56X9.84
C
(700X250)
27.56X9.84
D
(700X250)
Insulate the front and back side in proper size at the
Front/
same time when insulating the suction duct and
Back
discharge duct.
NOTE
• Insulate the end of the pipe and some curved area by using
separate insulator.
• Insulate the discharge and suction part at the same time
when you insulate connection duct.
0.79 inch (20 mm) or more
0.79 inch (20 mm) or more
Unit: inch(mm)
AC036BNHDCH
51.18X27.56X11.81
(1300X700X300)
51.18X27.56
(1300X700)
51.18X27.56
(1300X700)
27.56X11.81
(700X300)
27.56X11.81
(700X300)