12 31-5000500 Rev. 0
ENGLISH
Dimensions and Service Clearances
Installation space:
Installation of air-inlet grille
The angle of air-inlet grille should be
parallel with that of air inlet direction,
otherwise it will cause more noise.
Example shown to the right.
Duct Installation of Indoor Units:
1. Installation of the duct work: With a square supply duct, the bore shouldn’t be less than the sizes of air outlet duct.
2. Installation of the air return duct: Connect one side of the air return duct to the air return of the indoor units with rivets,
The duct size shouldn’t be smaller than the outlet/inlet size of the indoor unit, as shown in Fig. 1.
3. Insulating Supply Ducts: Supply and return air ducts should be insulated.
Selection of fan outlet
This machine uses a DC motor. Multiple ESP adjustments are available. The factory default is standard ESP. The ESP &
Silent mode can be set according to the static pressure and the noise requirement. Setting ranges are as follows:
Operation:
YR-E17 wired controller: With the display on, press FAN + SET keys for 5s to enter static pressure set mode. The static
pressure icon will flash and current static pressure will display. Press źŸ key to change static pressure grade, then press
the Set key to confirm.
Note: These are medium ESP ducted units so all the settings above must be done through a wired controller.
INSTALLATION INSTRUCTIONS
Level the unit within 0.2in(5mm)
If end A is to drain water, ensure end B is slightly higher than the end A to
facilitate drainage.
Otherwise, ensure end A is slightly higher than end B.
4-Ø3/8"(M10) hanging bolt
8-Ø3/8"(M10) hanging nut
8-Ø3/8"(Ø10) washer
Correct
Air in
Wrong
Air out
Air return shutter
Air return pipe
Indoor unit
Revit
Fig. 1
Connection of air return pipe
Model Ultra-Silent Silent Standard ESP default High ESP Super High ESP
Grade 1 2 3 4 5
Installation mode
Electric
control
enclosure
> 24in.
> 40in.
>4in(100mm)
Reserve 24in×24in
(600mm×600mm) access hole
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