JZ-HL

Multileaf damper, variant JZ-HL

Multileaf damper with actuator

JZ-HL

For low-leakage shut-off in ventilation and air conditioning systems

Rectangular multileaf dampers for volume flow and pressure control as well as for low-leakage shut-off of ducts and openings in walls and ceiling slabs

Maximum dimensions 2000 × 1995 mm
Closed blade air leakage to EN 1751, classes 1 – 2, depending on size
Casing air leakage to EN 1751, class C
Aerofoil opposed action blades
Blades interconnected by external linkage
Available in standard sizes and many intermediate sizes

Optional equipment and accessories

Actuators: Open/close actuators, modulating actuators
Explosion-proof construction with pneumatic actuator or spring return actuator
Powder-coated construction

General information

Application

Multileaf dampers as a control element in the volume flow rate and differential pressure control in ventilation and air conditioning systems
For low-leakage shut-off of ducts and openings in walls and ceiling slabs
Steel and stainless steel variants with brass or stainless steel bearings are suitable for use in potentially explosive atmospheres (ATEX)

Special characteristics

Aerofoil blades
Low-maintenance, robust construction
No parts with silicone
Available in standard sizes and many intermediate sizes

Classification

Air leakage with closed multileaf damper according to EN 1751:
Test pressure up to 2000 Pa

Up to B = 599 mm, class 1
From B = 600 mm, class 2

Nominal sizes

B: 200 – 2000 mm, in increments of 1 mm
Width subdivided (BM): 2001 – 4150 mm, in increments of 1 mm
H: 180, 345, 510, 675, 840, 1005, 1170, 1335, 1500, 1665, 1830, 1995 mm (intermediate sizes 183 – 1995 in increments of 1 mm, except for standard size H - 1 mm, H + 1 mm, H + 2 mm)
Height subdivided (HM): 1999 – 4066 mm, in increments of 1 mm
Any combination of B × H

Construction

Duct connection

Corner holes on both sides
G: Flange holes on both sides

Bearings

Plastic bearings, operating temperature 0 – 100 °C
M: Brass bearings, operating temperature 0 – 100 °C
E: Stainless steel bearings, operating temperature 0 – 100 °C

Blades

Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)

V: Reinforced blades available as from width 800 mm

Parts and characteristics

Ready-to-install shut-off damper
Blades with external linkage
Drive arm

Attachments

Quadrant stays and limit switches for the infinite adjustment of the multileaf dampers and for capturing the end positions
Open/close actuators for opening and closing multileaf dampers
Modulating actuators for variable damper blade positions
Pneumatic actuators for opening and closing multileaf dampers
Explosion-proof actuators for opening and closing multileaf dampers

Accessories

Installation subframes for the fast and simple installation of multileaf dampers

Construction features

Rectangular welded casing (P1: casing with screws), material thickness 1.25 mm
Blades, material thickness 1 mm
Flanges on both sides, suitable for duct connection, either flange holes or corner holes
External linkage, robust and durable, consisting of the coupling rod and horizontal arms
Blade shafts, Ø12 mm, with notch to indicate the damper blade position (not for ZS99)
With drive spindle as an attachment: For the position of the spindle, see 'Dimensions and weight'
With actuator as an attachment: The actuator is always attached to the second blade from the top
Travel stop (angle section) ensures tight closure of the top and bottom blades
Blade tip seals
The construction and selection of materials comply with the criteria stipulated in European directives, referred to as ATEX (for use in potentially explosive atmospheres) for variants with brass or stainless steel bearings (-M, -E)

Material and surfaces

Casing and blades made of galvanised sheet steel
Blade shafts, drive arm and external linkage made of galvanised steel
Blade tip seals made of PP/PTV plastic
P1: Powder-coated, RAL CLASSIC colour
PS: Powder-coated, DB colour

Standards and guidelines

Casing air leakage to EN 1751, class C
Meets the general requirements of DIN 1946, part 4, with regard to the acceptable air leakage with closed multileaf damper (from B = 600 mm)

Maintenance

Maintenance-free, as construction and materials are not subject to wear
Contamination should be removed, as it may lead to corrosion and to increased closed blade air leakage

Information technique

Schematic illustration of JZ-HL

① Casing

② Opposed blades

③ Blade tip seal

④ Travel stop (angle section with seal)

⑤ Actuator

⑥ Transverse link

⑦ External linkage

Multileaf dampers with external linkage can have parallel action blades or opposed action blades. An external linkage transfers the synchronous rotational movement from the drive arm to the individual blades. Even very large multileaf dampers can be safely opened and closed with this type of linkage. Opposed action blades close at various speeds as the linkage includes a transverse link. This facilitates the closing process and reduces the air leakage in closed multileaf dampers.

The torques for operating multileaf dampers must be dimensioned in such a way that the damper can be safely opened and closed. For closure, the torque must suffice to ensure complete shut-off by the blades. Opening is initiated without the impact of aerodynamic forces. When air flows through the damper, the aerodynamic forces of the airflow create a closing force (torque) on the blades; this happens independent of the direction of the airflow. This closing force must be countered, or overcome. The blade angle α with the largest torque dependently of among other things, on the fan characteristics.

Nominal sizes	200 × 180 – 2000 × 1995 mm
Operating temperature	0 – 100 °C

Minimum torques [Nm]

H	B
H	200	400	600	800	1000	1200	1400	1600	1800	2000
180 – 1995	10	10	10	10	10	10	10	10	10	10

Steel and stainless steel multileaf dampers, free cross-sectional area [m²]

H	B
H	200	400	600	800	1000	1200	1400	1600	1800	2000
180 – 344	0.03	0.06	0.09	0.12	0.15	0.18	0.21	0.24	0.27	0.3
345 – 509	0.06	0.11	0.17	0.23	0.28	0.34	0.4	0.45	0.51	0.57
510 – 674	0.08	0.17	0.25	0.33	0.42	0.5	0.58	0.67	0.75	0.83
675 – 839	0.11	0.22	0.33	0.44	0.55	0.66	0.77	0.88	0.99	1.1
840 – 1004	0.14	0.27	0.41	0.55	0.69	0.82	0.96	1.1	1.23	1.37
1005 – 1169	0.16	0.33	0.49	0.66	0.82	0.98	1.15	1.31	1.47	1.64
1170 – 1334	0.19	0.38	0.57	0.76	0.95	1.14	1.33	1.52	1.72	1.91
1335 – 1499	0.22	0.43	0.65	0.87	1.09	1.3	1.52	1.74	1.96	2.17
1500 – 1664	0.24	0.49	0.73	0.98	1.22	1.47	1.71	1.95	2.2	2.44
1665 – 1829	0.27	0.54	0.81	1.08	1.36	1.63	1.9	2.17	2.44	2.71
1830 – 1994	0.3	0.6	0.89	1.19	1.49	1.79	2.08	2.38	2.68	2.98
1995	0.32	0.65	0.97	1.3	1.62	1.95	2.27	2.6	2.92	3.25

Intermediate sizes: Interpolate values between widths.

Maximum permissible static differential pressure [Δp_{max t}] in the case of closed multileaf damper

Construction	B
Construction	800	1000	1200	1400	1600	1800	2000
Standard construction	2500	2000	1650	1400	1250	1100	1000
Brass bearings (-M)	3000	2500	2200	1950	1750	1600	1500
Stainless steel bearings (-E)	3000	2500	2200	1950	1750	1600	1500
Reinforced blades (-MV, -E-V)	3500	3000	2700	2500	2300	2100	2000

Sound power level for a closed multileaf damper L_WA [dB(A)]

Δp_t	Area B × H [m²]
Δp_t	0.14	0.2	0.4	0.6	0.8	1.2	2	4
100	43	45	48	50	51	53	55	58
200	51	53	56	58	59	61	63	66
500	62	63	66	68	69	>70	>70	>70
1000	69	>70	>70	>70	>70	>70	>70	>70
1500	>70	>70	>70	>70	>70	>70	>70	>70
2000	>70	>70	>70	>70	>70	>70	>70	>70

v [m/s]	Damper blade position α
0.5	<5	<30	<5	<30	<5	7.5	22	34	250	63
1	<5	<30	<5	<30	8	26	85	53	1000	83
2	<5	<30	<5	<30	30	46	345	73	>2000	>90
4	<5	41	10	44	120	65	1385	>90	>2000	>90
6	<5	52	24	56	270	77	>2000	>90	>2000	>90
8	10	60	42	64	480	85	>2000	>90	>2000	>90

Téléchargements

Information produit

Fiche technique du produit JZ-HL

JZ-HL_PD_2023_05_26_DE_fr Fiche technique du produit 2.8 Mo pdf

Certificats

Certificate concerning statistical leakage tests

LC_v1_2024_10_DE_en Certificate 660 ko pdf
Classe d'étanchéité des composants de ventilation TROX

Classe d'étanchéité_2021_05_31_DE_fr Certificat 670 ko pdf
Classification aux fuites des composants de ventilation TROX

Leckageklassifizierung-FK2-EU-v1_HC_2021_05_31_DE_fr Certificat 670 ko pdf
Déclaration de conformité UE

CE_2020_06_JZ-Ex_DE_fr Déclaration de conformité 120 ko pdf
Environmental product declaration JZ-HL

JZ-HL_EPD_2024_11_DE_en Environmental product declaration 1.2 Mo pdf

Manuels d'utilisation

Manuel d'installation JZ, JZ-AL, JZ-LL, JZ-HL, JZ-HL-AL, JZ-LL-AL, WG-JZ

JZ-x_WG-JZ_IM_A00000044990_V5_2022_10_FR_fr Manuel d'installation 490 ko pdf

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v [m/s]	Damper blade position α
	OPEN		20°		40°		60°		80°
	Δp_t [Pa]	L_WA [dB(A)]	Δp_t [Pa]	L_WA [dB(A)]	Δp_t [Pa]	L_WA [dB(A)]	Δp_t [Pa]	L_WA [dB(A)]	Δp_t [Pa]	L_WA [dB(A)]
0.5	<5	<30	<5	<30	<5	7.5	22	34	250	63
1	<5	<30	<5	<30	8	26	85	53	1000	83
2	<5	<30	<5	<30	30	46	345	73	>2000	>90
4	<5	41	10	44	120	65	1385	>90	>2000	>90
6	<5	52	24	56	270	77	>2000	>90	>2000	>90
8	10	60	42	64	480	85	>2000	>90	>2000	>90

Duct connection	Flange holes on both sides
Bearings	Brass bearings
Construction of blades	Reinforced blades
Operating side	Left side
Nominal size	1200 × 675 mm
Installation subframe	With
Attachments	Spring return actuator, 20 Nm, 24 V AC/DC
Damper blade position	Power off to CLOSE
User interface	Standard construction

JZ-HL

For low-leakage shut-off in ventilation and air conditioning systems

General information

Information technique

Téléchargements

Information produit

Fiche technique du produit JZ-HL

Certificats

Certificate concerning statistical leakage tests

Classe d'étanchéité des composants de ventilation TROX

Classification aux fuites des composants de ventilation TROX

Déclaration de conformité UE

Environmental product declaration JZ-HL

Manuels d'utilisation

Manuel d'installation JZ, JZ-AL, JZ-LL, JZ-HL, JZ-HL-AL, JZ-LL-AL, WG-JZ

NÉCESSAIRE D’UN POINT DE VUE TECHNIQUE

STATISTIQUES ET ANALYSE DE SITE WEB

COMMODITÉ ET PERSONNALISATION

POUR LA MEILLEURE EXPÉRIENCE TROX POSSIBLE