4-way ceiling diffuser with removable core.
Explanation
APGW-4 = Diffuser type
444 = Diffuser size
Accessories (Optional)
OBD = Volume control damper
Selection
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| Aeff | 0.01 | 0.02 | 0.04 | 0.07 | 0.1 | | 100 | Lth | 0.50 | | | | | | Ps | 4.50 | | | | | | Veff | 2.50 | | | | | | Lw | 18 | | | | | | 160 | Lth | 0.80 | 0.50 | | | | | Ps | 12 | 2.30 | | | | | Veff | 4.10 | 1.80 | | | | | Lw | 29 | 13 | | | | | 200 | Lth | 1 | 0.70 | 0.50 | | | | Ps | 18 | 3.60 | 1.10 | | | | Veff | 5.10 | 2.30 | 1.30 | | | | Lw | 35 | 18 | 6 | | | | 300 | Lth | 1.50 | 1 | 0.70 | 0.60 | | | Ps | 41 | 8.20 | 2.60 | 1.10 | | | Veff | 7.60 | 3.40 | 1.90 | 1.20 | | | Lw | 45 | 28 | 16 | 7 | | | 400 | Lth | | 1.30 | 1 | 0.80 | 0.70 | | Ps | | 14 | 4.60 | 1.90 | 0.90 | | Veff | | 4.60 | 2.60 | 1.60 | 1.10 | | Lw | | 35 | 24 | 15 | 7 | | 500 | Lth | | 1.70 | 1.20 | 1 | 0.80 | | Ps | | 23 | 7.1 | 2.90 | 1.40 | | Veff | | 5.70 | 3.20 | 2 | 1.40 | | Lw | | 41 | 29 | 20 | 13 | | 600 | Lth | | | 1.50 | 1.20 | 1 | | Ps | | | 10 | 4.20 | 2 | | Veff | | | 3.80 | 2.50 | 1.70 | | Lw | | | 34 | 25 | 17 | | 700 | Lth | | | 1.70 | 1.40 | 1.20 | | Ps | | | 14 | 5.70 | 2.80 | | Veff | | | 4.50 | 2.90 | 2 | | Lw | | | 37 | 28 | 21 | | 800 | Lth | | | 2 | 1.60 | 1.30 | | Ps | | | 18 | 7.50 | 3.60 | | Veff | | | 5.10 | 3.30 | 2.30 | | Lw | | | 41 | 32 | 24 | | 900 | Lth | | | | 1.80 | 1.50 | | Ps | | | | 9.50 | 4.60 | | Veff | | | | 3.70 | 2.60 | | Lw | | | | 35 | 27 | | 1000 | Lth | | | | 2 | 1.70 | | Ps | | | | 12 | 5.60 | | Veff | | | | 4.10 | 2.80 | | Lw | | | | 37 | 30 | | 1200 | Lth | | | | 2.40 | 2 | | Ps | | | | 17 | 8.10 | | Veff | | | | 4.90 | 3.40 | | Lw | | | | 42 | 34 | | 1400 | Lth | | | | 2.80 | 2.30 | | Ps | | | | 23 | 11 | | Veff | | | | 5.70 | 4 | | Lw | | | | 46 | 38 | | 1600 | Lth | | | | | 2.70 | | Ps | | | | | 14 | | Veff | | | | | 4.50 | | Lw | | | | | 41 | | 2000 | Lth | | | | | 3 | | Ps | | | | | 18 | | Veff | | | | | 5.10 | | Lw | | | | | 44 |
Symbols and specifications
- Q = Air volume in m³/h
- Ak = Effective surface (free area) in m²
- B = Distance between the diffusers in m
- H = Installation height of the diffusers in m
- Vz = Maximum velocity at the occupied zone according to distance between the diffusers and installation height in m/s
- Vk = Average effective velocity through the diffuser in m/s
- X0.25 = Throw length in m at an end velocity Vt of 0,25m/s
- µPs = Static pressure loss given in P
- Lw(A) = Acoustic power in dB(A)
- The throw X0.25 is given at an end velocity of 0.25m/s for a smooth ceiling without any obstacles.
- The values are given for isothermal supply air. Throw distances for cooling conditions at -11K can be calculated by dividing the X0.25 values with factor 1.1. For heating purposes at Dt of +11K a multiplier of 1.1 should be applied to the given X0.25 value.
- In order to achieve a high comfort level, selections can be made according to the maximal velocity at the occupied zone Vz. These values are given at distances between diffusers B and installation heights H. Velocities Vz lower than, or equal to 0,25m/s at the occupied zone are advised.
- The pressure losses Ps are given for diffusers without damper of with fully opened damper.
- The acoustic power values Lw(A) are given for diffusers without damper of with fully opened damper without room attenuation. Acoustic powers below 20dB(A) are mentioned as "<20" in the tables.
- For all special requirements, please contact our engineering office.
Placement instruction
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