JZ-LL

Opposed blades

Closed cell side seals

Encased gears

JZ-LL

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

Rectangular multileaf dampers for volume flow and pressure control as well as for extremely 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 3 – 4, depending on size
Casing air leakage to EN 1751, class C
Aerofoil opposed action blades
Closed cell side seals meet increased hygiene requirements
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

Application

Application

Multileaf dampers of Type JZ-LL are used as an acting element in the volume flow and pressure control in air conditioning systems
For extremely low-leakage shut-off of ducts and openings in walls and ceiling slabs
Stainless steel and powder-coated constructions with increased corrosion resistance if required
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
Closed cell side seals meet increased hygiene requirements

Classification

Closed blade air leakage to EN 1751

Test pressure up to 2000 Pa

Up to B = 599 mm, class 3
B = 600 – 1000 mm, class 4

Test pressure up to 1000 Pa

Up to B = 599 mm, class 3
B = 600 – 2000 mm, class 4

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 – 1998 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

Description

Variants

JZ-LL: Multileaf damper with opposed blade action, made of galvanised sheet steel
JZ-LL-A2: Multileaf damper with opposed blade action, made of stainless steel

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

Parts and characteristics

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

Attachments

Quadrant stays and limit switches: Quadrant stays to adjust the damper blades (stepless adjustment) and for capturing the end positions
Open/Close actuators: Actuators for opening and closing multileaf dampers
Modulating actuators: Actuators for stepless blade adjustment
Pneumatic actuators: Pneumatic actuators for opening and closing multileaf dampers
Explosion-proof actuators: Actuators for opening and closing multileaf dampers installed in potentially explosive atmospheres

Accessories

Installation subframe: Installation subframe for the fast and simple installation of multileaf dampers

Construction features

Rectangular casing, welded (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 and horizontal arms
Blade shafts, Ø12 mm, with notch to indicate the blade position (not for attachment ZS99)
With drive shaft as an attachment: For the position of the drive shaft see 'Dimensions and weight'
With actuator as an attachment: The actuator is attached to the second blade from the top
Travel stop (angle section) ensures tight closure of the top and bottom blades
Blade tip seals and side seals
Construction and materials comply with the EU directive and guidelines for use in potentially explosive atmospheres (ATEX) for variants with brass or stainless steel bearings (-M, -E)

Materials and surfaces

Casing and blades made of galvanised sheet steel or stainless steel
Blade shafts, drive arm and external linkage made of galvanised steel or stainless steel
Plastic, brass or stainless steel bearings
Blade tip seals made of PP/PTV plastic
Side seals made of closed cell PE foam
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 closed blade air leakage
Multileaf damper sizes from B = 600 mm meet the increased requirements of DIN 1946, part 4, with regard to the maximum closed multileaf damper air leakage

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

Technical information

Function, TECHNICAL DATA, QUICK SIZING, SPECIFICATION TEXT, ORDER CODE, RELATED PRODUCTS

Schematic illustration of JZ-LL-A2 00104315_0..

① Casing
② Slide disc
③ Opposed blades
④ Side seal
⑤ Blade tip seal
⑥ Travel stop (angle section with seal)
⑦ Actuator
⑧ Transverse link
⑨ External linkage

Functional description

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 different speeds since the linkage includes a transverse link. This facilitates the closing process and reduces the closed multileaf damper air leakage.

The torque for closing a multileaf damper must be such 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 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 position, or blade angle α, for which there is the largest torque depends, among other factors, on the fan characteristics.

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

JZ-LL, JZ-LL-A2, minimum torque

H	B [mm]
H	200	400	600	800	1000	1200	1400	1600	1800	2000
mm	Nm
180	10	10	10	10	10	10	10	10	10	10
345	10	10	10	10	10	10	10	10	10	10
510	10	10	10	10	10	10	10	10	10	10
675	10	10	10	10	10	10	15	15	15	15
840	10	10	10	10	15	15	15	15	15	15
1005	10	10	15	15	15	15	15	15	20	20
1170	15	15	15	15	15	15	20	20	30	30
1335	15	15	15	15	20	20	30	30	30	30
1500	15	15	15	20	20	30	30	30	30	30
1665	20	20	20	20	30	30	30	30	30	30
1830	20	20	20	20	30	30	30	30	30	30
1995	20	20	20	20	30	30	30	30	30	30

Steel and stainless steel multileaf dampers, free area

H	B [mm]
H	200	400	600	800	1000	1200	1400	1600	1800	2000
mm	m²
180 – 344	0.03	0.06	0.09	0.12	0.15	0.18	0.21	0.24	0.27	0.30
345 – 509	0.06	0.11	0.17	0.23	0.28	0.34	0.40	0.45	0.51	0.57
510 – 674	0.08	0.17	0.25	0.33	0.42	0.50	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	1.10
840 – 1004	0.14	0.27	0.41	0.55	0.69	0.82	0.96	1.10	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	1.30	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	2.20	2.44
1665 – 1829	0.27	0.54	0.81	1.08	1.36	1.63	1.90	2.17	2.44	2.71
1830 – 1994	0.30	0.60	0.89	1.19	1.49	1.79	2.08	2.38	2.68	2.98
1995	0.32	0.65	0.97	1.30	1.62	1.95	2.27	2.60	2.92	3.25

Intermediate sizes: Intermediate widths can be interpolated

Maximum static differential pressure for a closed multileaf damper

Construction	B [mm]
Construction	800	1000	1200	1400	1600	1800	2000
Construction	Δpst max
Construction	Pa
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 (-M-V, -E-V)	3500	3000	2700	2500	2300	2100	2000

JZ-LL, JZ-LL-A2, sound power level for a closed multileaf damper

Δpst	Area [m²]
Δpst	0.14	0.2	0.4	0.6	0.8	1.2	2	4
Δpst	LWA
Pa	dB(A)
100	<35	35	38	39	41	42	45	48
200	41	42	45	47	48	50	53	56
500	51	52	55	57	58	60	62	65
1000	58	60	63	64	66	68	70	>70
1500	63	64	67	69	>70	>70	>70	>70
2000	65	67	70	>70	>70	>70	>70	>70

Installation type A

Ducts on both sides

Quick sizing tables provide a good overview of the sound power levels and differential pressures that can be expected. Approximate intermediate values can be interpolated. Precise intermediate values and spectral data can be calculated with our Easy Product Finder design programme.

The sound power levels LWA apply to multileaf dampers with a cross-sectional area (B × H) of 1 m².

The differential pressures apply to multileaf dampers installed in ducts (installation type A).

JZ-LL, JZ-LL-A2, JZ-HL, differential pressure and sound power level

v	Damper blade position α
v	OPEN		20°		40°		60°		80°
v	Δpst	LWA	Δpst	LWA	Δpst	LWA	Δpst	LWA	Δpst	LWA
m/s	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)	Pa	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
10	14	67	65	70	750	>90	>2000	>90	>2000	>90

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.

Ready-to-operate unit which consists of the casing, aerofoil blades and the blade mechanism.

Flanges on both sides, suitable for duct connection.

The blade position is indicated externally by a notch in the blade shaft extension.

Closed multileaf damper air leakage to EN 1751, class 4.

Casing air leakage to EN 1751, class C.

Special characteristics

Aerofoil blades
Low-maintenance, robust construction
No parts with silicone
Available in standard sizes and many intermediate sizes
Closed cell side seals meet increased hygiene requirements

Materials and surfaces

Casing and blades made of galvanised sheet steel or stainless steel
Blade shafts, drive arm and external linkage made of galvanised steel or stainless steel
Plastic, brass or stainless steel bearings
Blade tip seals made of PP/PTV plastic
Side seals made of closed cell PE foam
P1: Powder-coated, RAL CLASSIC colour
PS: Powder-coated, DB colour

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

Technical data

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

Sizing data

V _______________________ [m³/h]
Δpst _______________________ [Pa]

Air-regenerated noise

LPA _______________________ [dB(A)]

Type
JZ-LL Low-leakage multileaf damper, Closed blade air leakage to EN 1751, classes 3 – 4

Material
No entry: galvanised steel
A2 Stainless steel

Duct connection
No entry: corner holes on both sides
G Flange holes on both sides (no corner holes)

Bearings
       No entry: plastic bearings
M       Brass bearings
E       Stainless steel bearings

Construction of blades
Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings
V reinforced blades available from width 800 mm

Operating side
No entry: on the right
L Left side

Nominal size [mm]
       B × H
       B > 2000 = width subdivided
       H > 1995 = height subdivided

Note: width and height subdivided variant, only for galvanised steel

Installation subframe
No entry: none
ER With (only for construction G)

Attachments
No entry: none
Z04 – Z07 Quadrant stay
Z12 – Z51 Actuators
ZF01 – ZF15 Spring return actuators
Z60 – Z77 Pneumatic actuators
Explosion-proof actuators
Z1EX, Z3EX Electric
Z60EX – Z77EX Pneumatic

Damper blade safety function
       Only for spring return actuators or pneumatic actuators
NO       Pressure off/power off to OPEN
NC       Pressure off/power off to CLOSE

Surface
       No entry: standard construction
P1       Powder-coated, specify RAL CLASSIC colour
PS       Powder-coated, specify DB colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

Order example: JZ-LL–G–L/1200×675/ER/ZF06/NC

Material	Galvanised steel
Duct connection	Flange holes on both sides
Bearings	Plastic bearings
Construction of blades	Standard
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
Surface	Standard construction

Attachments

Type Quadrant stays and limit switches
Type Open/Close actuators
Type Modulating actuators
Type Pneumatic actuators
Type Explosion-proof actuators

Accessories

Type Installation subframe

Variants, Attachments, Dimensions and weight, Product details

Multileaf damper, variant JZ-LL

Multileaf damper with explosion-proof actuator

JZ-LL

Variant

JZ-LL: Multileaf damper with opposed blade action, made of galvanised sheet steel

Materials and surfaces

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

JZ-LL-A2

Variant

JZ-LL-A2: Multileaf damper with opposed blade action, made of stainless steel

Materials and surfaces

Casing, blades and external linkage made of stainless steel, material no. 1.4301
Shafts made of stainless steel, material no. 1.4305
Blade tip seals made of PP/PTV plastic
Side seals made of closed cell PE foam
P1: Powder-coated, RAL CLASSIC colour
PS: Powder-coated, DB colour

Materials

Order code detail	Part	Material
–	Casing	Galvanised sheet steel
–	Blades	Galvanised sheet steel
–	Shafts	Galvanised steel
–	Drive arm	Galvanised steel
–	Linkage	Galvanised steel
–	Blade tip seals	Plastic (PP/PTV)
–	Blade side seals	Closed cell PE foam
–	Bearings	Plastic
A2	Casing	Stainless steel, material no. 1.4301
A2	Blades	Stainless steel, material no. 1.4301
A2	Shafts	Stainless steel, material no. 1.4305
A2	Linkage	Stainless steel, material no. 1.4301
E	Bearings	Stainless steel
M	Bearings	Brass

Surfaces

Order code detail	Part	Surface
–	Casing	Untreated
P1-RAL ...	Blades	Powder-coated, RAL ... CLASSIC
PS-DB ...	Blades	Powder-coated, DB ...

Quadrant stays and limit switches

Order code detail	Meaning	Limit switch	Function
Z04	Quadrant stay	–
Z05	Quadrant stay	1	Damper blade position CLOSED
Z06	Quadrant stay	1	Damper blade position OPEN
Z07	Quadrant stay	2	Damper blade positions CLOSED nad OPEN

Open/Close actuators

Order code detail	Meaning	Function	Supply voltage	Torque	Auxiliary switch
Z12	SM230A	–1-wire-control –2-wire-control (3-point)	100 – 240 V AC	20 Nm	–
Z13	GM230A	–1-wire-control –2-wire-control (Open/Close)	100 – 240 V AC	40 Nm	–
Z14	SM24A	–1-wire-control –2-wire-control (3-point)	24 V AC/DC	20 Nm	–
Z15	GM24A	–1-wire-control –2-wire-control (Open/Close)	24 V AC/DC	40 Nm	–
Z16	SM230A	–1-wire-control –2-wire-control (3-point)	100 – 240 V AC	20 Nm	S2A
Z17	GM230A	–1-wire-control –2-wire-control (3-point)	100 – 240 V AC	40 Nm	S2A
Z18	SM24A	–1-wire-control –2-wire-control (3-point)	24 V AC/DC	20 Nm	S2A
Z19	GM24A	–1-wire-control –2-wire-control (3-point)	24 V AC/DC	40 Nm	S2A
Z43	NM230A	–1-wire-control –2-wire-control (3-point)	100 – 240 V AC	10 Nm	–
Z45	NM24A	–1-wire-control –2-wire-control (3-point)	24 V AC/DC	10 Nm	–
Z47	NM230A	–1-wire-control –2-wire-control (3-point)	100 – 240 V AC	10 Nm	S2A
Z49	NM24A	–1-wire-control –2-wire-control (3-point)	24 V AC/DC	10 Nm	S2A

Minimum torque of multileaf damper has to be considered when selecting the actuator.

Open/Close actuators, fast-running

Order code detail	Meaning	Function	Supply voltage	Torque	Auxiliary switch
ZS21	SMQ24A	–1-wire-control	24 V AC/DC	16 Nm	–
ZS22	SMQ24A	–1-wire-control	24 V AC/DC	16 Nm	S2A

Only for nominal sizes with a minimum torque not exceeding 16 Nm.

Open/Close actuators, spring return

Order code detail	Meaning	Function	Supply voltage	Torque	Auxiliary switch
ZF01	NF24A	Supply voltage on/off	24 V AC/DC	10 Nm	–
ZF02	NFA	Supply voltage on/off	24 – 240 V AC 24 – 125 V DC	10 Nm	–
ZF03	NF24A-S2	Supply voltage on/off	24 V AC/DC	10 Nm	integrated
ZF04	NFA-S2	Supply voltage on/off	24 – 240 V AC 24 – 125 V DC	10 Nm	integrated
ZF06	SF24A	Supply voltage on/off	24 V AC/DC	20 Nm	–
ZF07	SFA	Supply voltage on/off	24 – 240 V AC 24 – 125 V DC	20 Nm	–
ZF08	SF24A-S2	Supply voltage on/off	24 V AC/DC	20 Nm	integrated
ZF09	SFA-S2	Supply voltage on/off	24 – 240 V AC 24 – 125 V DC	20 Nm	integrated
ZF11	EF24A	Supply voltage on/off	24 V AC/DC	30 Nm	–
ZF12	EF230A	Supply voltage on/off	100 – 240 V AC	30 Nm	–
ZF13	EF24A-S2	Supply voltage on/off	24 V AC/DC	30 Nm	integrated
ZF14	EF230A-S2	Supply voltage on/off	100 – 240 V AC	30 Nm	integrated

Minimum torque of multileaf damper has to be considered when selecting the actuator.

Modulating actuators

Order code detail	Meaning	Function	Supply voltage	Torque	Auxiliary switch
Z20	SM24A-SR	2 – 10 V DC	24 V AC/DC	20 Nm	–
Z21	GM24A-SR	2 – 10 V DC	24 V AC/DC	40 Nm	–
Z51	NM24A-SR	2 – 10 V DC	24 V AC/DC	10 Nm	–

Minimum torque of multileaf damper has to be considered when selecting the actuator.

Modulating actuators, spring return

Order code detail	Meaning	Function	Supply voltage	Torque	Auxiliary switch
ZF05	NF24A-SR	2 – 10 V DC	24 V AC/DC	10 Nm	–
ZF10	SF24A-SR	2 – 10 V DC	24 V AC/DC	20 Nm	–
ZF15	EF24A-SR	2 – 10 V DC	24 V AC/DC	30 Nm	–

Minimum torque of multileaf damper has to be considered when selecting the actuator.

Double acting pneumatic actuators, including explosion-proof actuators

Order code detail		Meaning	Damper blade safety function	Operating pressure	Torque at 6 bar	Limit switch	Solenoid valve
①	②	Meaning	Damper blade safety function	Operating pressure	Torque at 6 bar	Limit switch	Solenoid valve
Z60	Z60EX	DR030	–	1.2 – 6 bar	35 Nm	–	–
Z61	Z61EX	DR030	Power off to close/open	1.2 – 6 bar	35 Nm	–	24 V DC
Z62	Z62EX	DR030	Power off to close/open	1.2 – 6 bar	35 Nm	–	230 V AC
Z63	Z63EX	DR030	–	1.2 – 6 bar	35 Nm	2
Z64	Z64EX	DR030	Power off to close/open	1.2 – 6 bar	35 Nm	2	24 V DC
Z65	Z65EX	DR030	Power off to close/open	1.2 – 6 bar	35 Nm	2	230 V AC
Z66	Z66EX	DR060	–	1.2 – 6 bar	70 Nm	–
Z67	Z67EX	DR060	Power off to close/open	1.2 – 6 bar	70 Nm	–	24 V DC
Z68	Z68EX	DR060	Power off to close/open	1.2 – 6 bar	70 Nm	–	230 V AC
Z69	Z69EX	DR060	–	1.2 – 6 bar	70 Nm	2
Z70	Z70EX	DR060	Power off to close/open	1.2 – 6 bar	70 Nm	2	24 V DC
Z71	Z71EX	DR060	Power off to close/open	1.2 – 6 bar	70 Nm	2	230 V AC

① Standard

② Explosion-proof (only with brass or stainless steel bearings)

Minimum torque, depending on nominal size of multileaf damper and the operating pressure have to be considered when selecting the actuator.

Single acting pneumatic actuators, including explosion-proof actuators

Order code detail		Meaning	Damper blade safety function	Operating pressure	Torque at 6 bar	Limit switch	Solenoid valve
①	②	Meaning	Damper blade safety function	Operating pressure	Torque at 6 bar	Limit switch	Solenoid valve
Z72	Z72EX	SC060 SO060	Pressure off to close/open	6 bar	30 Nm
Z73	Z73EX	SC060 SO060	Power off and pressure off to close/open	6 bar	30 Nm		24 V DC
Z74	Z74EX	SC060 SO060	Power off and pressure off to close/open	6 bar	30 Nm		230 V AC
Z75	Z75EX	SC060 SO060	Pressure off to close/open	6 bar	30 Nm	2
Z76	Z76EX	SC060 SO060	Power off and pressure off to close/open	6 bar	30 Nm	2	24 V DC
Z77	Z77EX	SC060 SO060	Power off and pressure off to close/open	6 bar	30 Nm	2	230 V AC

① Standard

② Explosion-proof (only with brass or stainless steel bearings)

Explosion-proof Open/Close actuators, spring return actuators

Order code detail	Meaning	Function	Supply voltage	Torque	Auxiliary switch
Z1EX	ExMax15-SF	2-wire-control (3-point)	24 – 240 V AC/DC	15 Nm	integrated
Z3EX	ExMax30-SF	2-wire-control (3-point)	24 – 240 V AC/DC	30 Nm	integrated

Only with brass or stainless steel bearings

Z1EX: Only for nominal sizes with a minimum torque up to 15 Nm.

JZ-LL, standard sizes

Illustration shows operating side on the right

JZ-LL, standard sizes

H	No. of blades	Position of drive shaft
H	No. of blades	X	Blade
mm	–	mm	–
180	1	90	1
345	2	255	2
510	3	255	2
675	4	255	2
840	5	255	2
1005	6	255	2
1170	7	255	2
1335	8	255	2
1500	9	255	2
1665	10	255	2
1830	11	255	2
1995	12	255	2

JZ-LL, intermediate sizes

H	No. of blades	Position of drive shaft		Y
H	No. of blades	X	Blade	Y
mm	–	mm	–	mm
183 – 343	1	90	1	1.5 – 81.5
348 – 508	2	255	2	1.5 – 81.5
513 – 673	3	255	2	1.5 – 81.5
678 – 838	4	255	2	1.5 – 81.5
843 – 1003	5	255	2	1.5 – 81.5
1008 – 1168	6	255	2	1.5 – 81.5
1173 – 1333	7	255	2	1.5 – 81.5
1338 – 1498	8	255	2	1.5 – 81.5
1503 – 1663	9	255	2	1.5 – 81.5
1668 – 1828	10	255	2	1.5 – 81.5
1833 – 1993	11	255	2	1.5 – 81.5
1998	12	255	2	1.5

JZ, JZ-LL, JZ-HL, weight

H	B [mm]
H	200	400	600	800	1000	1200	1400	1600	1800	2000
mm	kg
180	4	6	8	9	11	13	14	16	18	19
345	6	8	10	12	15	17	19	21	24	26
510	7	10	13	16	19	22	25	27	30	33
675	10	13	16	20	23	27	30	33	37	40
840	11	15	19	23	28	32	37	41	46	50
1005	11	17	22	27	32	38	43	48	53	59
1170	13	19	25	31	37	43	49	55	61	67
1335	15	22	28	35	41	48	55	61	68	74
1500	16	23	30	37	44	51	59	66	73	80
1665	17	25	33	41	49	57	65	72	80	88
1830	18	27	35	44	52	61	69	78	86	95
1995	19	29	38	47	56	66	75	84	94	103

Multileaf dampers made of steel or stainless steel, ccorner holes

Constructions with flange holes (-G) do not have corner holes
Flange holes on casing sizes from width 288 mm and height 212 mm
Drive shafts (special accessory) upon request

Steel or stainless steel multileaf dampers, width, no. of flange holes per side

B	No. of holes
B	n
mm	–
200 – 287	1
288 – 537	2
538 – 787	3
788 – 1037	4
1038 – 1287	5
1288 – 1537	6
1538 – 1787	7
1788 – 2000	8

Steel or stainless steel multileaf dampers, height, no. of flange holes per side

H	No. of holes
H	n
mm	–
180 – 211	1
212 – 461	2
462 – 711	3
712 – 961	4
962 – 1211	5
1212 – 1461	6
1462 – 1711	7
1712 – 1961	8
1962 – 1995	9

Shaft end projection

Drive shaft	Multileaf damper
Drive shaft	JZ-LL	JZ-LL-A2	JZ-HL
Drive shaft	A
Drive shaft	mm
① Standard	30	26	30
② extended	250	180	250
③ Square 9 mm	37	37	37
④ Square 10 mm	70	–	60

Installation details, Basic information and nomenclature

Wall installation without installation subframe

Installation and commissioning

Only with horizontal blades
With or without installation subframe
Torsion-free installation
For widths exceeding 2000 mm or heights exceeding 1995 mm install two multileaf dampers side by side or one above the other
Only for installation in internal spaces

Width subdivided, width

B1	B
mm	mm
2550	1200
2950	1400
3350	1600
3750	1800
4150	2000

Height subdivided, height

H1	H
mm	mm
2086	1005
2416	1170
2746	1335
3076	1500
3406	1665
3736	1830
4066	1995

Principal dimensions

B [mm]

Duct width

H [mm]

Duct height

n [ ]

Number of flange screw holes

M [kg]

Weight

Nomenclature

LWA [dB(A)]

A-weighted sound power level of air-regenerated noise for the multileaf damper

α [°]

Damper blade position, 0°: OPEN, 90°: CLOSED

A [m²]

Upstream cross section

v [m/s]

Airflow velocity based on the upstream cross section (B × H)

V [m³/h] and [l/s]

Volume flow rate

Δpst [Pa]

Static differential pressure

Δpst max [Pa]

Maximum static differential pressure

All sound power levels are based on 1 pW.

Downloads

product information

Print page JZ-LL
Product data sheet JZ-LL

JZ-LL_PD_2024_02_12_DE_en Product data sheet 18 MB pdf

certificates

Conformity Statement Type JZ-Ex

JZ-x_WG-JZ Installation manual Conformity Statement 720 KB pdf
Declaration of hygiene conformity Type JZ-LL

JZ-LL--JZ-LL-AL--JZ-LL-A2-_HC_2020_06_05_DE_en Hygiene certificate 2,1 MB pdf
Declaration of incorporation Type JZ-LL

JZ-LL_CE_DoI_2023_12_01_DE_en Declaration of incorporation 660 KB pdf
EU declaration of conformity

CE_2020_06_JZ-Ex_DE_en Declaration of conformity 120 KB pdf
Environmental Product Declaration JZ-LL-A2

JZ-LL-A2_EPD_2024_03_DE_en Environmental Product Declarations 390 KB pdf
Leakage classification of TROX ventilation components

LC_v1_2023_11_DE_en Certificate 650 KB pdf

operation manuals

Installation manual JZ-* explosion-proof construction

JZ-x-Ex_IM_A00000048935_V5_2023_11_GB_en Installation manual 1,1 MB pdf
Installation manual Serien JZ-x and WG-JZ

JZ-x_WG-JZ_IM_A00000044990_V6_2023_11_GB_en Installation manual 1,5 MB pdf
Type JZ-* Installation manual

JZ-x-Ex_IM_A00000048935_V5_2023_11_GB_en 1,1 MB pdf

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JZ-LL

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

Application

Description

Technical information

Function, TECHNICAL DATA, QUICK SIZING, SPECIFICATION TEXT, ORDER CODE, RELATED PRODUCTS

Variants, Attachments, Dimensions and weight, Product details

Installation details, Basic information and nomenclature

Downloads

product information

Print page JZ-LL

Product data sheet JZ-LL

certificates

Conformity Statement Type JZ-Ex

Declaration of hygiene conformity Type JZ-LL

Declaration of incorporation Type JZ-LL

EU declaration of conformity

Environmental Product Declaration JZ-LL-A2

Leakage classification of TROX ventilation components

operation manuals

Installation manual JZ-* explosion-proof construction

Installation manual Serien JZ-x and WG-JZ

Type JZ-* Installation manual

TROX Services

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

FOR THE BEST TROX EXPERIENCE