1. No category

Round Duct Grille
Model KG-RR
Ferdinand Schad KG
Steigstraße 25-27
D-78600 Kolbingen
Telephone +49 (0) 74 63 - 980 - 0
Fax +49 (0) 74 63 - 980 - 200
info@schako.de
www.schako.de
Round Duct Grille Model KG-RR
Contents
Description ........................................................................................................................................ 3
Construction .............................................................................................................................................................................. 3
Model.......................................................................................................................................................................................... 3
Accessories ................................................................................................................................................................................ 3
Fastening ................................................................................................................................................................................... 3
Blade adjustment possibilities..................................................................................................................................................... 3
Blade position ............................................................................................................................................................................ 4
Blade position ............................................................................................................................................................................. 4
Correction factor (for scattered air jet) ....................................................................................................................................... 4
Models and dimensions ......................................................................................................................... 5
Dimensions ................................................................................................................................................................................ 5
Technical data .................................................................................................................................... 7
Pressure loss and noise level ..................................................................................................................................................... 7
Maximum end velocity of jet .................................................................................................................................................... 10
Jet path .................................................................................................................................................................................... 11
Critical throw ........................................................................................................................................................................... 11
Maximum penetration depth ..................................................................................................................................................... 12
Temperature and induction ratios ............................................................................................................................................. 13
Legend ........................................................................................................................................... 14
Order details .................................................................................................................................... 15
Specification texts .............................................................................................................................. 16
01/04 - 2
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Description
In modern architecture, sheet metal and spiral ducts of air-conditioning systems are often incorporated in the design of the
room. Emphasis is often placed deliberately on parts of the supply system. In this visible installation of the ventilation ducts, it
is a good idea to integrate the air diffusers into the ducts.
The round duct compact grille type KG-RR is suitable for installation in supply or return air systems. The air volume throughput can be regulated by using an integrated hit-and-miss
damper. The integrated hit-and-miss damper ensures a uniform
distribution of supply air along the whole length of the grille. The
round duct grille can be installed at any point of the duct system.
The front side horizontal and vertical blades can be adjusted.
A divergent air throw pattern can be set. This widens the air jet,
supplying a larger area of the occupied zone with fresh air.
Accessories, such as dummy pipes, end covers and connecting
sleeves complete the range for this diffuser. (See documents:
Accessories for round duct systems).
Layout
The round duct grille KG-RR is selected according the diagrams
of the grille type KG.
Attention!
We would like to point out that for cleaning stainless steel models,
only suitable cleaning materials may be used!
In order to avoid corrosion-caused damage, we recommend
subjecting the components in the natural aluminium design onsite to an after-treatment by anodisation or painting.
In case of an upwards outflow it has to be considered that between
the weld seam and the diffuser is a web of 100 mm at least. This
means that the weld seam must be offset accordingly.
Blade adjustment options
KG-RR-V-8
Construction
Round duct compact grille
- Galvanised sheet steel (-Sv)
- Sheet steel painted to RAL 9010 (white) (standard, -St)
- Natural aluminium (-Alu)
- Stainless steel 1.4301 (V2A) painted in the colour sand silver (-ES)
Model
KG-RR-V
KG-RR-H
KG-RR-...-8
KG-RR-...-15
Section A-A
right
left
vertical
KG-RR-H-8
- Vertical throw
- Horizontal throw, both left and right hand
air throws possible
- horizontal air deflection blades
- vertical air deflection blades
Both left and right hand
air throw possible.
Section B-B
Accessories
diagonally upwards diagonally downwards horizontal
Rubber lip seal (-GD)
Accessories
- Separate brochure on request
Fastening
Suspension
- prepared for suspended installation by using an M8
threaded rod to be provided by the customer.
KG-RR-H-15 / KG-RR-V-15
A diverging air throw pattern can be set.
01/04 - 3
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Blade position
Blade position
KG-RR-V-15 / KG-RR-H-15
KG-RR-V-8 / KG-RR-V-15
6 o'clock (-6U, standard)
straight
opposite to one another
diverging 44°
KG-RR-H-8 / KG-RR-H-15
3 o'clock (-3U)
diverging 84°
9 o'clock (-9U)
The angle of propagation of the air jet and thus the length
of throw can be affected by adjusting the vertical air deflection blades.
Blade position
straight
diverging
Correction factor (for scattered air jet)
with or without coanda effect
Blade position
End velocity of jet
TV = ΔTx / ΔT0
Induction ratio
Jet drop - Jet rise
Grille distance z(m)>
44°
vmax (m/s) × 0.65
× 0.65
i × 1.3
y × 1.3
x × 0.20
84°
vmax (m/s) × 0.5
× 0.5
i×2
y×2
x × 0.25
01/04 - 4
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Models and dimensions
Dimensions
KG-RR-V 8
KG-RR-V 15
Banding from size 500
external
external
Banding from size 500
KG-RR-H 8
KG-RR-H 15
KG-RR-H either left or right hand air throw possible. All that is needed is to use the round duct rotated.
Available sizes
Detail X
Length L
on-site
500
1-part
Height H
65
115
215
315
200
198
x
x
224
222
x
x
250
248
x
x
x
280
278
x
x
x
315
313
x
x
x
355
353
x
x
x
x
400
398
x
x
x
x
450
448
x
x
x
x
500
498
x
x
x
x
560
558
x
x
x
x
630
628
x
x
x
x
710
708
x
x
x
x
800
798
x
x
x
x
900
898
x
x
x
x
All combined lengths and heights available!
x =
- =
NW =
ød
M8 riveting nut
750
1000
Only applies to suspended installation from the ceiling:
prepared for suspended installation from the ceiling by using an M8 threaded rod to be provided by the customer.
1500
2-part
NW
1750
2000
available
not available
Nominal width
01/04 - 5
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Division of length
1-part:
Length 500
Length 750
Round duct diffusers with a
length of > 1000 mm are produced in two parts and joined
in-factory with a connecting
sleeve. Locking nuts are not
required at this impact side.
The dimensions of the dummy pipe fit the dimensions of
the round duct grille type KGRR.
A different division of length
is possible on special request. However, the maximum length for a middle or
end piece is 1000 mm.
Accessories:
Rubber lip seal (-GD)
Detail X
Length 1000
2-part:
Length 1500
Length 1750
Length 2000
01/04 - 6
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Technical data
Pressure loss and noise level
Supply air face velocity
Supply air
Hit-and-miss damper position OPEN in %
01/04 - 7
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Return air face velocity
Return air
Hit-and-miss damper position OPEN in %
01/04 - 8
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
FQ in m² at the hit-and-miss damper
L
1-part
NW
250 / 315
250 / 280 / 315
355 / 400 / 450
500 / 560 / 630
710 / 800 / 900
2-part
H
500
750
1000
1500
1750
2000
65
0,0090
0,0135
0,0180
0,0270
0,0315
0,0360
115
0,0180
0,0270
0,0360
0,0540
0,0630
0,0720
65
0,0090
0,0135
0,0180
0,0270
0,0315
0,0360
115
0,0180
0,0270
0,0360
0,0540
0,0630
0,0720
215
0,0360
0,0540
0,0720
0,1440
0,1800
0,2160
65
0,0090
0,0135
0,0180
0,0270
0,0315
0,0360
115
0,0180
0,0270
0,0360
0,0540
0,0630
0,0720
215
0,0360
0,0540
0,0720
0,1080
0,1260
0,1440
315
0,0540
0,0810
0,1080
0,1620
0,1890
0,2160
Face area (m²)
L
1-part
NW
250 / 315
250 / 280 / 315
355 / 400 / 450
500 / 560 / 630
710 / 800 / 900
2-part
H
500
750
1000
1500
1750
2000
65
0,0240
0,0350
0,0470
0,0710
0,0820
0,0940
115
0,0440
0,0660
0,0870
0,1310
0,1530
0,1740
65
0,0240
0,0350
0,0470
0,0710
0,0820
0,0940
115
0,0440
0,0660
0,0870
0,1310
0,1530
0,1740
215
0,0850
0,1260
0,1680
0,2530
0,2940
0,3360
65
0,0240
0,0350
0,0470
0,0710
0,0820
0,0940
115
0,0440
0,0660
0,0870
0,1310
0,1530
0,1740
215
0,0850
0,1260
0,1680
0,2530
0,2940
0,3360
315
0,1260
0,1870
0,2480
0,3740
0,4350
0,4960
01/04 - 9
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Maximum end velocity of jet
Supply air without coanda effect
Supply air with coanda effect
01/04 - 10
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Jet path
Supply air without coanda effect
Heating
Cooling
Critical throw
Supply air with coanda effect
01/04 - 11
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Maximum penetration
Max. vertical penetration (in heating mode):
01/04 - 12
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Temperature and induction ratios
Supply air without coanda effect
Supply air with coanda effect
01/04 - 13
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Legend
VZU
Vx
VAB
vmax
vK
vstirn
(m³/h) [l/s]
(m³/h) [l/s]
(m³/h) [l/s]
(m/s)
(m/s)
(m/s)
=
=
=
=
=
=
Astirn
x
xkr
y
yH
xkr
ρ
Δpt
LWA
(m²)
(m)
(m)
(m)
(m)
(m)
(kg/m³)
(Pa)
[dB(A)]
=
=
=
=
=
=
=
=
=
ΔTOH (K)
=
tZU
tR
i
TV
ΔTX
=
=
=
=
=
(°C)
(°C)
(-)
(-)
(K)
ΔTO (K)
=
RH
H
L
FQ
=
=
=
=
(mm)
(mm)
(mm)
(m2)
Supply air volume
Total air jet volume at point x
Return air volume
Maximum end velocity of jet
Duct velocity
Intake velocity, blower stream velocity,
outflow velocity, relative to Astirn
Face area
Horizontal throw
Critical throw
Vertical throw
Maximum penetration in heating mode
Critical throw
Density
Pressure loss
A-weighted sound power level [LWA =
LWA1 + KF]
Temperature difference between air supply
and room temperature in heating mode
(ΔTOH = tZUH - tRH)
Supply air temperature
Room temperature
Induction ratio (i = VX / VZU)
Temperature ratio (TV = ΔTX / ΔTO)
Temperature difference at point x
(ΔTX = ΔTO x TV)
Temperature difference between supply
air temperature and room temperature
(ΔTO = tZU - tR)
Room height
Height
Length
Free cross-section in m²
01/04 - 14
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Order details
Round duct grille
KG-RR-V
Vertical throw
Round duct grille
KG-RR-H
Horizontal throw
Blade position
Blade position
6 o'clock
-
3 o'clock
-3U
with horizontal
air deflection blades
-8
made of natural aluminium
-Alu
6 o'clock
-6U
with vertical
air deflection blades
-15
made of sheet steel painted
to RAL 9010 (white)
(standard)
-St
made of sheet steel
galvanised
made of stainless steel
1.4301 (V2A) painted
in the colour sand silver
-ES
-Sv
NW
200
224
250
280
315
355
400
450
500
560
630
710
800
900
H
65
115
215
315
(available from size 250)
(available from size 355)
L
2-part
1-part
500
750
1000
1500
1750
2000
Accessories
Rubber lip seal
-GD
Other accessories: separate brochure on request
Order example: KG-RR-V-8-St-400-215
Unless stated otherwise, the thick-frame model will be delivered!
01/04 - 15
Construction subject to change.
Version: 24.04.2015
No return possible!
Round Duct Grille Model KG-RR
Specification texts
Round duct compact grille type KG-RR 8 for supply and return
air for connection to DIN ducts. With integrated manually adjustable hit-and-miss damper for air volume regulation. With
horizontal front side adjustable air deflection blades.
- Vertical throw
Product: SCHAKO type KG-RR-V 8
- Horizontal throw
Product: SCHAKO type KG-RR-H 8
- Round duct compact grille (round duct with blades and hitand-miss damper) consisting of:
- Galvanised sheet steel (-Sv)
- Sheet steel painted to RAL 9010 (white) (standard, -St)
- Natural aluminium (-Alu)
- Stainless steel 1.4301 (V2A) painted in the colour sand silver (-ES)
Round duct compact grille type KG-RR 15 for supply and return
air for connection to round DIN ducts. With integrated manually
adjustable hit-and-miss damper for air volume regulation. With
vertical front side adjustable air deflection blades.
- Vertical throw
Product: SCHAKO type KG-RR-V 15
- Horizontal throw
Product: SCHAKO type KG-RR-H 15
- Round duct compact grille (round duct with blades and hitand-miss damper) consisting of:
- Galvanised sheet steel (-Sv)
- Sheet steel painted to RAL 9010 (white) (standard, -St)
- Natural aluminium (-Alu)
- Stainless steel 1.4301 (V2A) painted in the colour sand silver (-ES)
Accessories
- Rubber lip seal (-GD)
Other accessories
- Separate brochure on request
01/04 - 16
Construction subject to change.
Version: 24.04.2015
No return possible!