Installation Of Indoor Unit - Haier SYJS-0308 Service Manual

5.4 Installation of ceiling concealed type
When installing the ceiling concealed type indoor unit, a specially designed return air
bellows shall be installed, as shown in Figure 3, Figure 4.
Figure 3
Figure 4
Air outlet grille
Each air return and supply duct should fix to the floor precast slab by using an iron stand. Use glue to
seal the interface closely. Recommend the distance between the air return duct and the wall is more than
150mm.
The distance between air duct outlet and air conditioner outlet is according to the length of actually installed
air duct and in service behavior of the static pressure terminal: Installation sketch map for long and short air
duct is showed below, when connect to short air duct, using low static terminal (terminal color is write), the
distance between air duct outlet and air conditioner outlet is no more than 0.5m; when connect to long air duct,
using middle static terminal (terminal color is red), the distance between air duct outlet and air conditioner outlet
could be within 5m at this point.
Figure 5
Drain piping of condensed water should keep a downhill grade of 1% or more. Use insulating pipe to cover
the drain piping of condensed water to keep warmth.
As figure shown, suspend and install the unit.
Figure 6
M8 suspension screw
Installation for air duct of indoor unit
1. Installation for air supply duct
This type of unit uses circular air duct with its caliber of 180mm.
An additional transitive air duct is necessary for the circular air duct to connect to the air
supply inlet. It should be also connected to its respective air diffuser separately. See
Fig.1. Adjust the wind speed of each air diffuser outlet to keep in line on the whole, so
as to meet a demand of the air conditioner in the room.
Installing building roof
*0.5m or*5m
Ceiling
Air outlet duct
Air supply
Air supply
No obstacles
within 1 m
Unit
sling dog
drain piping
air return duct
transition
air return shutter air duct
M8 broad foundation bolt
M8 broad lock ring
M8 nut

Installation of indoor unit

A
Unit
Return air bellows
Return air
Detail A
Return air bellows
Return air
air outlet
air diffuser
duct
Figure 5
joint of air diffuser
Unit