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Air flows & noise levels for split systems
ID = Indoor Units OD = Outdoor Units
FDT 8 Series ceiling cassette
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Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		AirFlow OD (m3/s) Noise Level (dBA)
208 0.23 / 0.16 38 / 33 0.93 52
258 0.26 / 0.18 39 / 35 0.93 52
308(1ph) 0.28 / 0.20 41 / 35 0.97 52
308(3ph) 0.28 / 0.20 41 / 35 0.97 52
408 0.43/ 0.31 48 / 40 1.16 54
508 0.46 / 0.33 49 / 43 1.83 55

FDTN 6 Series ceiling cassette
Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		Air Flow OD (m3/s) Noise Level (dBA)
206 0.25 / 0.17 38 / 33 0.7 55
256 0.27 / 0.18 40 / 34 0.7 57
306(1ph) 0.28 / 0.20 41 / 35 0.9 56
306(3ph) 0.28 / 0.20 41 / 35 0.9 56
406 0.43 / 0.32 48 / 41 1.66 57
506 0.47 / 0.33 49 / 42 1.66 59

FDKN 8 Series wall mounted
Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		Air Flow OD (m3/s) Noise Level (dBA)
208 0.27 / 0.16 45 / 38 0.93 52
258 0.28 / 0.18 45 / 38 0.93 52
308(1ph) 0.35 / 0.25 46 / 40 0.97 52
308(3ph) 0.35 / 0.25 46 / 40 0.97 52

FDKN 6 Series wall mounted
Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		Air Flow OD (m3/s) Noise Level (dBA)
206 0.28 / 0.22 45 / 38 0.7 55
256 0.28 / 0.22 45 / 38 0.7 57
306(1ph) 0.35 / 0.25 46 / 40 0.9 56
306(3ph) 0.35 / 0.25 46 / 40 0.9 56

FDEN 8 Series ceiling suspended
Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		Air Flow OD (m3/s) Noise Level (dBA)
208 0.23 / 0.16 43 / 38 0.93 52
258 0.26 / 0.17 44 / 39 0.93 52
308(1ph) 0.28 / 0.19 45 / 39 0.97 52
308(3ph) 0.28 / 0.19 45 / 39 0.97 52
408 0.43 / 0.31 49 / 43 1.16 54
508 0.46 / 0.33 50 / 44 1.83 55

FDEN 6 Series ceiling suspended
Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		Air Flow OD (m3/s) Noise Level (dBA)
206 0.23 / 0.17 43 / 38 0.7 55
256 0.27 / 0.18 44 / 39 0.7 57
306(1ph) 0.28 / 0.20 45 / 39 0.9 56
306(3ph) 0.28 / 0.20 45 / 39 0.9 56
406 0.43 / 0.32 49 / 43 1.66 57
506 0.47 / 0.33 50 / 44 1.66 59

FDR 8 Series ducted cassette
Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		Air Flow OD (m3/s) Noise Level (dBA)
208 0.23 / 0.18 43 / 37 0.93 52
258 0.30 / 0.23 43 / 37 0.93 52
308(1ph) 0.33 / 0.25 44 / 38 0.97 52
308(3ph) 0.33 / 0.25 44 / 38 0.97 52
408 0.47 / 0.37 45 / 38 1.16 54
508 0.57 / 0.45 46 / 39 1.83 55

FDRN 6 Series ducted cassette
Model No. Air Flow ID (m3/s)
Hi : Lo 		Noise Level (dBA)
Hi : Lo 		Air Flow OD (m3/s) Noise Level (dBA)
206 0.23 / 0.18 43 / 37 0.7 55
256 0.30 / 0.23 43 / 37 0.7 57
306(1ph) 0.33 / 0.25 44 / 38 0.9 56
306(3ph) 0.33 / 0.25 44 / 38 0.9 56
406 0.46 / 0.37 45 / 38 1.66 57
506 0.57 / 0.45 46 / 39 1.66 59

FDU 8 Series ducted (horizontal)
Model No. Air Flow ID (m3/s) Standard Noise Level (dBA) Air Flow OD (m3/s) Noise Level (dBA)
Standard
308(1ph) 0.33 89 0.97 52
308(3ph) 0.33 43 0.97 52
408 0.45 45 1.16 54
508 0.57 68 1.83 55
808 0.85 48 3 58
1008 1.13 49 3 58

FDU 6 Series ducted (horizontal)
Model No. Air Flow ID (m3/s) Standard/Max Noise Level (dBA) Air Flow OD (m3/s) Noise Level (dBA)
Standard
306(1ph) 0.33 / 0.42 41 0.9 56
306(3ph) 0.33 / 0.42 41 0.9 56
406 0.45 / 0.57 44 1.66 57
506 0.57 / 0.72 45 1.66 59

SRK Wall mounted
Model No. Air Flow ID (m3/s) Cool/Heat @ High Noise Level (dBA) Cool/Heat Air Flow OD (m3/s)
Cool/Heat @ High 		Noise Level (dBA)
Cool/Heat
208 0.12 / 0.13 36 / 38 0.35 / 0.35 46 / 47
258 0.13 / NA 38 / NA 0.36 / NA 41 / NA
288 0.13 / 0.13 38 / 38 0.38 / 0.38 41 / 42
328 0.14 / 0.16 40 / 41 0.4 / 0.4 44 / 45
408 0.14 / 0.16 40 / 41 0.36 / 0.36 47 / 48
508 0.22 / 0.23 45 / 46 0.56 / 0.56 50 / 53
568 0.22 / 0.23 45 / 46 0.56 / 0.56 53 / 54

501 0.18 / 0.20 44 / 45 0.56 / 0.56 50 / 53
561 0.20 / 0.22 45 / 46 0.56 / 0.56 53 / 54


SRK GZ Wall mounted
Model No. Air Flow ID (m3/s) Cool/Heat @ High Noise Level (dBA) Cool/Heat Air Flow OD (m3/s)
Cool/Heat @ High 		Noise Level (dBA)
Cool/Heat
25 0.12 / 0.13 38 / 39 0.35 / 0.35 46 / 46
35 0.13 / 0.17 39 / 42 0.40 / 0.40 46 / 47
502 0.17 / 0.18 43 / 43 0.43 / 0.50 48 / 48
 
Air flows & noise levels for KX2 & KXR
Please note the following data applies for R407C and R22 models

Outdoor Units - Air Flows & Noise Levels
Model Ref System Type Air Flows (m3/s) Noise Level dB(A)
FDC1251HKXES 2-pipe 1.5 58
FDC2001HKXES 2-pipe 2.92 60
FDC2501HKXES 2-pipe 2.92 60

FDCJ140 KX2 2-pipe 1.5 56
FDCJ224 KX2 2-pipe 3.0 58
FDCJ280 KX2 2-pipe 3.0 59

FDC2001HKR 3-pipe 2.92 60
FDC2501HKXR 3-pipe 2.92 60

Indoor Units - Air Flows
Model Ref
KX2 model Ref
Model No.
201
251
321
401
501
631
801
1001
1251
22
28
36
45
56
71
90
112
140
Air Flow M3/s
FDT Cassette 4-way High - 0.20 0.20 0.25 0.25 0.27 0.35 0.47 0.50
Medium - 0.17 0.17 0.20 0.20 0.22 0.25 0.40 0.43
Low - 0.15 0.15 0.17 0.17 0.18 0.20 0.35 0.37

FDTS Cassette 1-way High 0.18 0.20 0.20 0.23 - 0.30 - - -
Medium - 0.18 0.18 0.20 - 0.25 - - -
Low 0.13 0.17 0.17 0.17 - 0.20 - - -

FDTW Cassette 2-way High - 0.23 - 0.23 0.23 0.27 0.32 0.47 0.53
Medium - 0.20 - 0.20 0.20 0.22 0.27 0.42 0.47
Low - 0.17 - 0.17 0.17 0.18 0.20 0.38 0.40

FDR Ducted Cassette High 0.17 0.20 - 0.23 0.23 0.30 0.33 0.47 0.57
Medium 0.15 0.18 - 0.20 0.20 0.26 0.30 0.42 0.52
Low 0.13 0.17 - 0.18 0.18 0.23 0.25 0.37 0.45

FDUM Ducted Horizontal High - - 0.20 0.23 0.23 0.30 0.33 0.47 0.57
Medium - - 0.18 0.20 0.20 0.27 0.30 0.42 0.52
Low - - 0.17 0.18 0.18 0.23 0.25 0.37 0.45

FDE Ceiling Suspended High - - 0.23 0.23 0.23 0.30 - 0.47 0.57
Medium - - 0.20 0.20 0.20 0.25 - 0.42 0.50
Low - - 0.17 0.17 0.17 0.20 - 0.37 0.43

FDK Wall mounted High 0.15 0.17 0.17 0.19 0.28 0.35 - - -
Medium - 0.15 0.15 0.17 0.25 0.30 - - -
Low 0.13 0.13 0.13 0.13 0.22 0.25 - - -

FDFL Floor mounted High - 0.20 - 0.23 - 0.30 - - -
Medium - 0.18 - 0.20 - 0.25 - - -
Low - 0.17 - 0.17 - 0.20 - - -
 
Indoor Units - Noise Levels
Model Ref
KX2 model Ref 		Model No. 201 251 321 401 501 631 801 1001 1251
22 28 36 45 56 71 90 112 140
Noise Levels dB(A)
FDT Cassette 4-way High - 37 37 38 38 40 42 49 50
Medium - 34 34 35 35 38 40 46 47
Low - 33 33 34 34 36 39 42 45

FDTS Cassette 1-way High 39 40 40 43 - 44 - - -
Medium - 39 39 40 - 40 - - -
Low 38 38 38 38 - 38 - - -

FDTW Cassette 2-way High - 39 - 39 39 41 41 44 45
Medium - 36 - 36 36 38 39 41 42
Low - 33 - 33 33 35 36 38 39

FDR Ducted Cassette High 41 42 - 43 43 43 43 45 46
Medium 39 40 - 40 40 40 40 42 43
Low 36 37 - 37 37 37 37 38 39

FDUM Ducted Horizontal High - - 34 35 35 35 36 38 39
Medium - - 32 32 32 32 33 35 37
Low - - 29 29 29 29 30 32 34

FDE Ceiling Suspended High - - 43 43 43 44 - 49 50
Medium - - 40 40 40 40 - 46 47
Low - - 38 38 38 38 - 42 42

FDK Wall mounted High 40 42 42 44 46 47 - - -
Medium - 40 40 41 43 44 - - -
Low 37 37 37 37 39 40 - - -

FDFL Floor mounted High - 41 - 43 - 43 - - -
Medium - 38 - 41 - 41 - - -
Low - 36 - 40 - 40 - - -