Air Distribution Products CAP-G Multi-Nozzle Diffuser Data Sheet
/ 20 | Nozzle Diffusers Table of Contents Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Product Parts . . . . . . . . . . . . . . . . . . . . . . . 4 Setup Possibilities . . . . . . . . . . . . . . . . . . . . . 5 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .
Nozzle Diffusers | 3 / 20 Description CAP-G is a multi-nozzle diffuser with a backing box, mainly intended for air supply in comfort ventilation systems for offices, shops, medical rooms, school classrooms, etc., installed in plaster board false ceiling. Highlights • Versatile adjustability of air discharge patterns • Excellent air induction and mixing even with small air flow volumes, fit for VAV ventilation • High air flow capacity with low noise and moderate pressure drop • Compact design Fig.
/ 20 | Nozzle Diffusers Design The CAP-G body is made from galvanized steel, composed of the backing box with a vertically oriented rubber gasket sealed circular connection and diffuser plate with polymer nozzles, attached by spring clips. The nozzles can be rotated by 360° in the plane of the diffuser plate. The proper directional adjustment of the individual nozzles results in the desired air discharge pattern.
Nozzle Diffusers Setup Possibilities 1 2 3 4 5 6 Fig.
/ 20 | Nozzle Diffusers Dimensions A H1 øD H2 C Fig. 4: Dimensions of the CAP-G Tab.
Nozzle Diffusers Ordering Code CAP-G- - 125-16 160-25 200-36 250-49 Nominal site (con. diameter) - Number of nozzles 315-81 (RAL9010) W (RAL9003) SW Surface and nozzle colour RALXXXX Example of the Ordering Code CAP-G-250-49-W Diffuser CAP-G in white colour (RAL 9010) with connection diameter 250 mm and 49 nozzles.
/ 20 | Nozzle Diffusers Accessory THOR Plenum Box Description The THOR plenum box is used together with air diffusers for pressure reduction, airflow balancing and sound attenuation as well as for measuring and adjusting the air flow. The standard air flow measurement accuracy is preserved also when the straight duct length in front of the inlet is zero (directly behind Tee or Elbow piece in the duct). The plenum box can be used for air inlet and extract.
Nozzle Diffusers Dimensions | 9 / 20 E A øD1 57 B Tab. 2: Dimensions of the THOR C Type DN1 - DN2 A B C øD1 øD2 E 40 (mm) øD2 (kg) 100-125 250 300 150 99 126 185 2,5 125-160 250 340 160 124 161 210 2,7 160-200 300 430 195 159 202 280 4,0 200-250 350 480 250 199 252 305 5,9 250-315 450 545 300 249 317 330 8,3 Fig.
/ 20 | Nozzle Diffusers Quick Selection Air flow volume q and pressure drop ∆P at different sound power levels LWA Type 25 dB 3 m /h CAP-G-125-16 30 dB 35 dB l/s 3 m /h l/s m3/h l/s 81 23 109 30 137 38 CAP-G-160-25 97 27 132 37 178 49 CAP-G-200-36 131 36 180 50 239 66 CAP-G-250-49 161 45 243 68 318 88 CAP-G-315-81 225 63 342 95 483 134 NOTE: The working points were measured with THOR plenum box and open adjustment damper.
Nozzle Diffusers CAP-G-125-16 + THOR-100-125 Pa 350 15 20 25 CAP-G-160-25 + THOR-125-160 30 20 % 35 50 dB(A) 40 l/s 40 % Pa 200 15 20 25 30 35 40 20 % 45 dB(A) 180 45 dB(A) 300 | 11 / 20 45 40 % 50 55 60 50 dB(A) 65 l/s 60 % 160 250 140 40 dB(A) 200 60 % 100 80 35 dB(A) 30 dB(A) 80 % 25 dB(A) 100 % 50 40 60 80 100 120 140 160 m³/h Diagram 1: Pressure drop & A-weighted total sound power level, depending on air flow volume, measured with THOR plenum box 60 40 3
/ 20 | Nozzle Diffusers CAP-G-200-36 + THOR-160-200 Pa 180 30 40 50 60 70 CAP-G-250-49 + THOR-200-250 80 90 100 110 l/s 40 % 20 % 45 dB(A) 55 dB(A) 60 % 50 dB(A) 160 140 80 % 50 60 70 80 45 dB(A) 160 90 100 20 % 50 dB(A) 110 120 l/s 40 % 60 % 40 dB(A) 120 100 35 dB(A) 80 60 40 140 40 dB(A) 120 100 Pa 180 35 dB(A) 80 30 dB(A) 100 % 60 40 25 dB(A) 40 25 dB(A) 20 20 100 150 200 250 300 350 400 m³/h Diagram 5: Pressure drop & A-weighted total sound power lev
Nozzle Diffusers CAP-G-315-81 + THOR-250-315 Pa 60 80 100 120 140 160 160 20 % 45 dB(A) 50 dB(A) 140 120 40 dB(A) CAP-G-125-16 180 l/s 40 % 60 Pa 25 18 30 35 45 50 35 dB(A) 55 60 60 % 80 % 30 dB(A) 20 40 dB(A) 10 35 dB(A) 6 4 30 dB(A) 25 dB(A) 100 200 250 300 350 400 450 500 550 600 650 700 m³/h Diagram 9: Pressure drop & A-weighted total sound power level, depending on air flow volume, measured with THOR plenum box 120 m CAP-G-125-16 8 3 6 1 200 250 300 350 400 450 500 550 600 6
/ 20 | Nozzle Diffusers CAP-G-160-25 Pa 40 45 50 55 18 CAP-G-200-36 60 65 70 75 80 85 90 95 l/s 45 dB(A) 14 80 90 100 110 120 130 40 dB(A) 8 40 dB(A) 10 35 dB(A) 8 35 dB(A) 6 l/s 45 dB(A) 12 10 6 30 dB(A) 30 dB(A) 4 25 dB(A) 140 160 180 200 220 240 260 280 300 320 340 m³/h Diagram 13: Pressure drop & A-weighted total sound power level, depending on air flow volume, measured without plenum box 25 dB(A) 200 250 300 350 400 450 500 m³/h Diagram 15: Pressure drop
Nozzle Diffusers CAP-G-250-49 Pa 14 80 | 15 / 20 CAP-G-315-81 100 120 140 160 180 l/s Pa 100 16 120 140 160 180 200 220 240 14 12 45 dB(A) 10 l/s 45 dB(A) 12 10 8 260 40 dB(A) 40 dB(A) 8 6 35 dB(A) 35 dB(A) 4 6 30 dB(A) 2 250 25 dB(A) 300 350 400 450 500 550 600 650 700 m³/h Diagram 17: Pressure drop & A-weighted total sound power level, depending on air flow volume, measured without plenum box m CAP-G-250-49 2 25 dB(A) 400 500 600 700 800 900 1000 m³/h
/ 20 | Nozzle Diffusers Installation, Maintenance & Operation Information about installation, maintenance and operation is available in the document or follow the instructions at Systemair DESIGN. “DataSheet_CAP-G” Operate in dry indoor conditions with an operation temperature range of -20 °C to +50 °C. Transport & Storage Dry indoor conditions with a temperature range of -40°C to +50°C.
Nozzle Diffusers Related Products CAP-F Multi-Nozzle Diffuser Product information is available within the and at Systemair DESIGN.
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