Mitsubishi FDC121KXZEN1-W - Page 110

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108
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'20 • KX-T-373
CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC
■Divided duct connection method
1. Open some one during 4 knockout holes, and please connect a divided duct.
It isn’t possible to use more than one hole at the same time.
2. Please make the wind shielding a blowout vent on the side where a divided duct was connected.
3. The shorage of the external static pressure by pressure loss for a connected divided duct and blowout unit is made up by a booster fan.
example : When 2.5m
3
/min of ventilation by divided duct is needed in model FDTC56KXZE1-W
(In case of connection ductφ125 × 5ｍ）
①Duct resistance : Pressure loss by a flexible duct =35Pa (7Pa/m × 5m)
②Blowout unit : Pressure loss by a blowout unit =10Pa
③External static pressure when being 2.5m
3
/min =17Pa (See upper table.)
⇒Correspondence by a booster fan =①+②-③ =28Pa
Models FDTC15, 22, 28, 36KXZE1-W
Models FDTC45, 56KXZE1-W
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100
110
0 10 20 30 40
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0.5
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2.5
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Air flow in divided
duct (P-Hi)
Air flow in divided
duct (Hi)
Air flow in divided
duct (P-Hi)
All air flow (Hi)
Main air flow (Hi)
Main air flow (P-Hi)
Air flow in divided
duct (Hi)
Air flow in divided duct (m
3
/min)
Air flow ratio
External static pressure in divided duct (Pa) External static pressure in divided duct (Pa)
Air flow in divided
duct (P-Hi)
Air flow in divided
duct (Hi)
Air flow in divided
duct (P-Hi)
All air flow (Hi)
Main air flow (Hi)
Main air flow (P-Hi)
Air flow in divided
duct (Hi)
Air flow in divided duct (m
3
/min)
Air flow ratio
External static pressure in divided duct (Pa) External static pressure in divided duct (Pa)
All air flow (P-Hi)
All air flow (P-Hi)