225 325 425 525 625 725 825 1025 1225 125 0,5 0,6 0,8 0,9 1,1 175 0,6 0,7 0,9 1,1 1,3 225 0,7 0,9 1,1 1,2 1,4 1,6 1,8 325 1,1 1,3 1,6 1,8 2,1 2,3 2,8 3,3 425 1,6 1,9 2,,2 2,5 2,0 3,3 3,9 Decorative grilles Application: Decorative grilles are used as supply or exhaust air grilles in normal HVAC system. Type: ź CNRD - decorative air grilles with special 15x15 mm square lattice core Fixing: Directly mountable to wall opening or square duct. ź Fixed by screw (-C) ź Fixed by concealed bracket (-R) Material: ź Frame is made of steel and insection is made of aluminium powder coated RAL 9010 in standard Options: ź or steel with other RAL colours Accessories: ź FK mounting frame made of galvanised steel ź AZ type air volume control damper steel coated RAL 9005 ź AL type deflection volume control damper steel coated RAL 9005 3. Installaon of the grilles 1. Dimensions of venlaon grilles type CNRD H / L 2. The range dimensions [mm] and weights [kg] of grilles type CNRD 10 25 70 O 4,5 (H - 15) x (L - 15) Fixed by screw (-C) Fixing by screw to mounting frame type FK H x L (H - 15) x (L - 15) 25 10 7 64,5 7 (H - 25) x (L - 25) Fixed by concealed bracket (-R) 7 H x L (H - 25) x (L - 25) Fixing by concealed bracket to mounting frame type FK 25 20 25 If the L size of the grill is longer than 600 mm we use divider (25 mm) 7 H x L CNRD90 30 15 7 H x L CNRD45 30 15
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225 325 425 525 625 725 825 1025 1225
125 0,5 0,6 0,8 0,9 1,1
175 0,6 0,7 0,9 1,1 1,3
225 0,7 0,9 1,1 1,2 1,4 1,6 1,8
325 1,1 1,3 1,6 1,8 2,1 2,3 2,8 3,3
425 1,6 1,9 2,,2 2,5 2,0 3,3 3,9
Decorative grilles Application: Decorative grilles are used as supply or exhaust air grilles in normal HVAC system. Type: ź CNRD - decorative air grilles with special 15x15 mm square lattice core
Fixing:Directly mountable to wall opening or square duct. ź Fixed by screw (-C)ź Fixed by concealed bracket (-R)
Material: ź Frame is made of steel and insection is made of
aluminium powder coated RAL 9010 in standardOptions:ź or steel with other RAL colours
Accessories: ź FK mounting frame made of galvanised steelź AZ type air volume control damper steel coated RAL 9005ź AL type deflection volume control damper steel coated RAL 9005
3. Installa�on of the grilles
1. Dimensions of ven�la�on grilles type CNRD
H / L
2. The range dimensions [mm] and weights [kg] of grilles type CNRD
1025
70O 4,5(H - 15) x (L - 15)
Fixed by screw (-C)
Fixing by screw to mounting frame type FK
H x
L
(H -
15)
x (L
- 1
5)
2510
7
64,5 7(H - 25) x (L - 25)
Fixed by concealed bracket (-R)7
H x
L
(H -
25)
x (L
- 2
5)
Fixing by concealed bracket to mounting frame type FK
25
2025
If the L size of the grill is longer than 600 mm we use divider (25 mm)
7
H x
L
CNRD90
30
15
7
H x
L
CNRD45
30
15
225 325 425 525 625 725 825 1025 1225
125 0,5 0,6 0,8 1,0 1,1
175 0,6 0,7 0,9 1,1 1,3
225 0,6 0,9 1,1 1,3 1,5 1,7 1,9
325 1,1 1,3 1,6 1,8 2,1 2,4 2,9 3,4
425 1,6 1,9 2,2 2,5 2,8 3,4 4,0
Type: ź FK - mounting frame - galvanised steel
Fixing:The mounting frame can be easily assembled on site without any tools. The assembled FK frame can be fixed to the opening with riveting, bolting and welding.
DLLSplenum box side connection
DLFS plenum box with top connection
DN
50DN + 110
B
H
H
B
15050
DN
6. Nominal dimension of the sockets of plenum boxes
In the tables, data is calculated according to grilles frame size average speed between v =2 and v =5 (m/sec). a a
The data is ρ=1,2 (kg/m³) density and paralel (open) lamellas as well as in the case of isothermal blowing valid assumption. The ventilation calculation is possible according to the above table. The intermediate values are estimated by interpolation.
v = 2 [m/sec]a v = 3 [m/sec]a v = 5 [m/sec]av = 4 [m/sec]a
LxH
v = 2 [m/sec]a v = 3 [m/sec]a v = 5 [m/sec]av = 4 [m/sec]a