DOOR TECHNOLOGY

Door closers with slide arm
The new OTS 73x series

The Gretsch-Unitas Group

Securing technology for you

Convenience and design – As simple as that ........................................ 4
A system for all applications? It works! ................................................. 8
Perfect function is simply a question of adjustment .......................... 12
OTS 73x surface-mounted overhead door closers ............................... 18
OTS 735 FL and OTS 736 FL
surface-mounted overhead door closers with freewheel ................... 20
VTS 735 concealed door closer................................................................ 22
Accessories ................................................................................................. 24
All solutions at a glance ........................................................................... 26

Attractive design and very convenient access, installation ﬂexibility
and standard-compliant safety: door closers are only truly eﬃcientif they meet all requirements. You can rely on the Gretsch-Unitas
Group for this: as one of the international market leaders for window and door technology and automatic entry and building management systems, we are the competent partner for intelligent door
closer solutions – from the individual product to an individually coordinated system. The foundation for this is the 100 year old traditionof our family-owned company, which has stood for innovation, progress and cost-eﬀectiveness from the start. With the new OTS 73x
series, we thus oﬀer a technically advanced solution that pays oﬀ fromplanning to installation through to daily operation. In order to live up
to the expectations of our principle "Securing technology for you" we
aim to combine ﬁrst-rate products with ﬁrst-rate services.

Installation situations ............................................................................... 28
Systematic service .................................................................................... 30

Supplement: Overview of modular components

Copyright notice© All illustrations and texts in this publication are protected by copyright. Unlessotherwise stated in the image credits, the rights belong to the Gretsch-Unitas Group.
Any use of copyright protected materials without the consent of the holder of therights is prohibited.
Image credits
Pages 4/5 Personal image: Little girl running provided courtesy of Getty Images
Publisher
Gretsch-Unitas GmbH | Baubeschläge
Johann-Maus-Str. 3 I D-71254 DitzingenTel. + 49 (0) 71 56 3 01-0 I Fax + 49 (0) 71 56 3 01-2 93
www.g-u.com

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Straightforward access and sophisticated appearance

Convenienceand design –As simple as that.

Personal image: Little girl running provided courtesy of Getty Images

Whether for ﬁre protection, barrier-free construction or burglar
protection: the use of overhead door closers to automatically close doors plays an important role in public and privatebuildings. All the better if one can invest in the most compact
solution, ensuring convenience and barrier freedom: as thesmallest of their type, closers with slide arms from the new
OTS 73x series combine attractive design with simple opening – in accordance with the DIN SPEC 1104 and DIN 18040
standards for barrier-free construction.

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5

Compact and elegant design

A high level of convenience
meets slim lines:
the new OTS 73x series
The comprehensive product range of the
new OTS 73x series sets standards for attractive design and very convenient access:with more compact dimensions and an
elegant appearance, the new generation of
the proven closer with side arm also maintains its easy and convenient operation.
At only 63 mm high, 44 mm deep and 268 mm
long, the closing bodies of the new OTS 73x
series are currently the smallest on themarket. Dimensions, drilling patterns andappearance are uniform across all producttypes so that a harmonious overall pictureis created, even if diﬀerent door closers
are used. The only exception to this is thevariant with freewheel. Its dimensions
deviate slightly.

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GU І WP05060-04-2-2 І 04/2015

The visually attractive, closed surface of
the OTS 73x series leaves nothing to be
desired: the elegant slide rail cover androbust cover, which is used in place of aslider, ensure this. The cover and the slidearm are available in diﬀerent materials andﬁnishes and can thus be selected to ﬁt thedoor and the surrounding architecture.
The covered and concealed mounting plate
places the ﬁnishing touch on this attractive
design.
For the highest demands on design andfunctionality, the new OTS 73x series also
oﬀers the VTS 735 concealed door closer:
thanks to concealed mounting in the doorleaf, the door closer and slide rail remain
hidden when the door is closed.

Advantages at a glance■ Comparatively the smallest closing body on
the market: in an elegant, slim design■ Robust cover instead of a slider: available
in different materials and finishes■ Concealed mounting plate: for a highquality, sleek appearance■ Uniform dimensions throughout nearly
the entire range of door closers: for aharmonious overall effect in the project■ Uniform drilling pattern for all door closer
types

The promise of quality made by the door
closer's appearance is kept with clevertechnology: integrated double-heart curve
technology and the optional freewheel
function ensure very convenient access.

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Flexible use

A system for all
applications?
It works!
As diﬀerent as the functions of doors may be, the opportunities to use overhead door closers are just as diverse. The new
OTS 73x series covers all applications with its innovative
modular system: the components are simply combined tomeet requirements and adjusted individually. This not only
makes planning, installation and retroﬁtting easier: it also
saves storage space and ﬁxing accessories.

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9The innovative modular system of the OTS 73x series

One slide rail for all applications
The right solution for any
application
School, hotel or airport? Single- or doubleleaf door? Installation on the hinge side or
the side opposite to hinges? Transom or
standard installation? Each door closer isan individual answer to speciﬁc building
situations and door variants. The innovative modular system of the new OTS 73x series completely covers these requirements
and thus makes planning and installationeasier for all applications.
The possible uses range from simple door
closing to ﬁre protection all the way
through to barrier freedom. In addition,
the modular system enables quick retroﬁtting and easy expansion of functions for
special solutions.

The new OTS 73x series makes it possible
with components that are universallysuitable for all applications and mounting variants: slide rail and slide arm, thesymmetrical mounting plate and the axle
extension are identical for all variants. Without being dismantled, they can be ﬂexibly
expanded with additional components –for example, with a mechanical or electromechanical hold-open device, door leaf
coordinator, opening restrictor and smoke
switch module.
The advantage is obvious: those who havecomponents that are exactly matched for
all requirements need fewer diﬀerent
components in storage und fewer ﬁxing
accessories – for more eﬃciency andcost-eﬀectiveness.

Advantages at a glance■ One slide rail, one slide arm and one
axle extension for all application andinstallation types■ Uniform mounting plate in accordancewith EN 1154 for all application andinstallation types

1-leaf – OTS 73x

2-leaf – OTS 73x SRI

Standard installation
on hinge sideStandard installation
on side opposite to hinges■ Uniform installation drilling pattern
for all variants prevents confusion■ Fixing cam on the mounting plate forsecure, fast installation and steady
fixing■ All types of hold-open devices (mechanical and electromechanical) can be
opened beyond the hold-open angle

Transom installation
on hinge side

Transom installation
on side opposite to hinges

2

3

The modular system

Choose the right solution for you from our modular system
Single-leaf solutions

Double-leaf solutions with SRI door leaf coordinator

Optional: 3 AD-GS

3 AD-GS

22 GS

22 GS

8 AD-SRI

3 AD-GS

7 SRI

2 GS
2
1

11 OTS 73x

11 OTS 73x

10 MP

10 MP

10 MP

OTS 73x / OTS 73x BG door closer

11 OTS 73x
1 A CoverStandard

Standard

4 FM

4 FM

22 GS

11 OTS 73x

22 GS

1 OTS 73x

10 MP

With mechanical hold-open device

AD-GS slide rail cover(with slide arm)

1BS OTS 73x closer body
1BG OTS 73x BG closer body

3 AD-GS

Optional: 3 AD-GS

GS slide rail

8 AD-SRI

3 AD-GS

7 SRI

2 GS
2

10 MP

10 MP

4 FM

7BS

1 OTS 73xWith mechanical hold-open device
7BG
6 AD-GS-FE

6 AD-GS-FE
5 FE
11 OTS 73x

11 OTS 73x

10 MP

With electromechanical hold-open device

2 GS

11 OTS 73x

10 MP

With electromechanical hold-open
device and smoke switch module

7 SRI

22 GS
10 MP

10 MP

6 AD-GS-FE
9 RSM

6 AD-GS-FE
5 FE

4FM mechanical hold-open device
with ÖB opening restrictor

5

AD-SRI coverfor door leaf coordinator9

FE electromechanicalhold-open device

6

RSM smoke switch module

10 MP mounting plate

11 OTS 73x

AD-GS-FE coverfor electromechanicalhold-open device

7

SRI door leaf coordinator
7BS SRI

7BG SRI-BG

With electromechanical hold-open device

6 AD-GS-FE
5 FE

2 GS

5 FE

2 GS

8 AD-SRI

5 FE
11 OTS 73x

8 AD-SRI

2 GS
10 MP

With electromechanical hold-open
device and smoke switch module

9 RSM

6 AD-GS-FE

7 SRI

22 GS
10 MP

5 FE

1 OTS 73x

8

11

ÖB Opening restrictor

BS = hinge side / BG = side opposite to hinges

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Clever technology for easy access

Perfect function
is simply a questionof adjustment.
How does one recognise a perfectly functioning door?
When one barely perceives it while walking through. The new
OTS 73x series ensures this with innovative double-heart
curve technology – and sets standards for easily controlled
opening and closing movement. Thanks to steplessly
adjustable control valves and adjustment of the closing
force, the convenience and function of the overhead door
closer can be easily adjusted. So, for example, the entire
closing force range (EN min. to EN max.) can be easily
controlled using nine turns.

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Patent-pending technology meets simple control

Barrier-free convenience thanks
to intelligent use of force
The patent-pending double-heart curve
technology of the new OTS 73x series
enables extremely easy and convenient
passage through the door. This enables it to
fulﬁl the DIN SPEC 1104 (CEN/TR 15894)
requirements, which prescribe reductionof the opening force by 40 % at an opening angle of 2° to 60°. This also enables
eﬀortless passage through large doors
for children, the elderly and people withrestricted mobility.

1

2

For controlled opening
and closing
The closing movement can be controlled
and regulated individually in all productvariants of the OTS 73x series: this is
ensured by the precise closing force display
and convenient closing force adjustment,
among other things.

Nm

–40

The strongly decreasing force at a door opening angle of 2° to 60° makes opening easierWith the colour-coded, robust control
valves made entirely of metal, closing
speed, latching speed and backcheck canalso be individually adjusted to the building
situation and the needs of users.

Advantages at a glance■ Patent-pending double-heart curve
technology for maximum convenience■ Opening and closing movement can be
precisely controlled■ Colour-coded control valves prevent
confusion during adjustment

6

3

4

5

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1

Closing force adjustment

2

Closing force display

For convenient closing force adjustment
with only nine turns (EN min. up to ENmax.) and visible display of the adjusted
closing force.

3

Double-heart curve technology

Ensures optimum function of the closing
shaft for smooth opening.

Control valves

4

Closing speed

5Latching speed

6

Backcheck

Steplessly adjustable and colour-coded – forconvenient and confusion-free adjustment.

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Product range

All expectations
incorporated.

VTS 735 concealed door closer

Whether surface mounted, with freewheel or concealed:with one holistic product range, the new generation of OTS 73x
series closers with slide arm cover the most varied application
areas and expectations. You can always rely on standard-compliant safety – no matter which door closer variant is used.

OTS 735 FL and OTS 736 FL overhead door closers
with freewheel

OTS 73x overhead door closers

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OTS 73x surface-mounted overhead door closers

Thanks to simple installation and highfunctional safety, surface-mounted
OTS overhead door closers can be installedon the hinge side or the side opposite tohinges. They are also suitable for use on
double-leaf doors thanks to an integrated
door leaf coordinator hidden in the slide
rail to ensure the correct closing sequenceof the active and passive leaf.

Product features
Door closer

Slide rail

Mechanical hold-open device (FM) [1]■ Tested according to EN 1154

■ One slide rail for all application andinstallation types (modular system)–For hinge side and side opposite tohinges–For standard and transom installation■ Steplessly adjustable from 80° – 140°

■ Slide rail installation height–Standard (without cover): 22 mm–Standard (with cover): 25 mm■ 2 different hold-open areas can bepreset at the same time

■ With integrated cable channel for electromechanical hold-open device (FE)

Door leaf coordinator (SRI)■ With double-heart curve technology.
This ensures DIN SPEC 1104 conformity and suitability for barrier-freeconstruction according to DIN 18040■ Smallest dimensions (L x H x D):
268 x 63 x 44 mm for all variants,
including cover■ Valve functions–Closing speed–Latching speed–Backcheck■ With closing force display

46■ Simple and safe adjustment of closing
force with just a few turns of the adjustment screw (max. 9 turns EN min.
up to EN max.)

63

22

482

■ Cover in an attractive design; available
in various materials and finishes
268

44■ Cover with safeguard■ Max. door opening and closing angle
180°■ Large opening angle during installationof the side opposite to hinges thanks to
its own BG door closer version■ Fast and uncomplicated extension withfurther components

Electromechanical hold-open device (FE)■ Steplessly adjustable from 85° – 140°

■ SRI waiting position with load-limiting
device; prevents damages in case of
mishandling■ With microswitch in conjunction withthe electromechanical hold-open device: if the active leaf is manually tripped, the passive leaf is also automatically closed

Mounting plate■ Symmetrical mounting plate for all
door closer types and mounting
variants

Opening restrictor■ Steplessly adjustable limit angle
up to 120°

Application range■ Suitable for fire and smoke protection
doors■ For swing doors up to 1400 mm (1-leaf)
or 2800 mm (2-leaf)■ DIN left and DIN right usable■ Hinge side and side opposite to hinges■ Standard and transom installation
Overview of variants
Type designation

OTS 733

OTS 733 BG

OTS 735

OTS 735 BG

OTS 736

OTS 736 BG

Assembly

Hinge side

Side opposite
to hinges

Hinge side

Side opposite
to hinges

Hinge side

Side opposite
to hinges

Closing force size
according to EN 1154

3

3

2–5

2–5

3–6

3–6

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EN 115418040

GU І WP05060-04-2-2 І 04/2015

SPEC 1104

19

OTS 735 FL and OTS 736 FL
surface-mounted overhead door closers with freewheel

The surface-mounted OTS 735 FL andOTS 736 FL overhead door closers enable
the user to easily access a ﬁre protection
door. The integrated electrical freewheel
function, which can be activated from 0°,
allows the door freedom of movement, as
if no door closer were installed. Safe andreliable door locking is still provided in theevent of a ﬁre. This makes them particularly suitable for use on ﬁre protection doors
in nursery schools, schools and retirement
homes – standard-compliant for barrierfree construction in accordance with DIN
18040 or DIN SPEC 1104.

Product features
Door closer

Slide rail

Door leaf coordinator (SRI)■ Tested according to EN 1155

■ One slide rail for all application andinstallation types (modular system)–For hinge side and side opposite tohinges–For standard and transom installation■ SRI waiting position with load-limiting
device; prevents damages in case of
mishandling■ With electrically integrated freewheel
function, can be activated from 0°■ Accessibility of a door up to 1400 mm(1-leaf), without exertion of force inboth directions, as if no door closer
were installed■ Secure and automatic closing in theevent of a fire, making it ideal for
installation on 1- and 2-leaf fire andsmoke protection doors■ Smallest dimensions (L x H x D):
319 x 65.5 x 45 mm, incl. cover■ Slide rail installation height–Standard (without cover): 22 mm–Standard (with cover): 25 mm■ Fast and uncomplicated extension withfurther components

Mounting plate■ Symmetrical mounting plate for all
door closer types and mounting
variants
Opening restrictor■ Steplessly adjustable limit angle
up to 120°

■ Valve functions–Closing speed–Latch action
482■ Max. door opening and closing angle
180°

22

46

65.5

■ No special components: all components of the modular system can beused■ Uniform drilling pattern in all door
closers of the OTS 73x series

319

45

Application range■ Suitable for fire and smoke protection
doors■ For swing doors up to 1400 mm (1-leaf)
or 2800 mm (2-leaf)■ DIN left and DIN right usable■ Hinge side and side opposite to hinges■ Standard and transom installation

Overview of variants
Type designation

OTS 735 FL

OTS 735 FL BG

OTS 736 FL

OTS 736 FL BG

Assembly

Hinge side

Side opposite
to hinges

Hinge side

Side opposite
to hinges

Closing force size
according to EN 1154

5

5

6

6

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F

EN 1155

18040

GU І WP05060-04-2-2 І 04/2015

SPEC 1104

21

VTS 735 concealed door closer

The VTS 735 concealed door closer for
single- and double-leaf doors is installed
concealed in the door leaf and door frame.
Closer and slide rail are not visible when
the door is closed. VTS thus meets thehighest expectations in terms of function
and design.

Product features
Door closer

Slide rail

Mechanical hold-open device (FM) [1]■ Tested according to EN 1154

■ Standard slide rail: 20 x 12 mm■ With heart curve technology, thus incompliance with DIN SPEC 1104 andsuitable for barrier-free construction
according to DIN 18040■ Functional slide rail: 26 x 32 mm for–Electromechanical hold-open device(FE)–Integrated door leaf coordinator (SRI)■ Retrofittable and can be integrated in
the standard slide rail as an option■ Smallest dimensions (L x H x D):
240 x 45 x 32 mm■ Valve functions–Closing speed–Latch action–Backcheck■ For door leaf thicknesses of 40 mm
or more■ Hold-open angle steplessly adjustablefrom approx. 80°
Electromechanical hold-open device (FE)■ Steplessly adjustable from 80°
Opening restrictor■ Steplessly adjustable limiting angle
up to max. 120°

■ Max. door opening and closing angle
120° (depending on door construction)■ Closing force size: EN 3 – 5, easily andsteplessly adjustable

12

20

240

45

67

440

■ Easy and safe closing force adjustment
with just a few turns of the adjustment
screw (max. 9 turns EN min. up to EN
max.)
Application range

31■ Suitable for fire and smoke protection
doors

32
VTS 735 concealed door closer – with standard slide rail

■ For swing doors up to 1250 mm (1-leaf)
or 2500 mm (2-leaf)
32

26
460

■ DIN right and DIN left usable45

87■ Suitable for all rebate clearance heights
up to 22 mm.

240

31
32

VTS 735 concealed door closer – with functional slide rail (for SRI door leaf coordinator and FE electromechanical hold-open device)[1] Not approved for smoke and fire protection doors

22

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F

EN 115418040

GU І WP05060-04-2-2 І 04/2015

SPEC 1104

23

Accessories – Surface-mounted overhead door closers

Accessories – Concealed door closer

Mechanical hold-open device (FM) with opening restrictor (ÖB)

Mechanical hold-open device (FM)■ Can be integrated in the slide rail

■ Can be integrated in the standard slide rail (20 x 12 mm)■ Retrofittable■ Retrofittable■ With integrated opening restrictor■ Steplessly adjustable from 80°■ On-/Off-switchable override function■ Steplessly adjustable from 80° – 140°
Electromechanical hold-open device (FE)Electromechanical hold-open device (FE)■ Retrofittable and can be extended laterally on the slide rail

■ Retrofittable and can be extended laterally
on the functional slide rail (26 x 32 mm)■ Can be fully opened beyond hold-open angle up to 180°
■ With its own cover■ Steplessly adjustable from 85° – 140°

■ Complete opening beyond hold-open angle possible■ Steplessly adjustable from 80°

Door leaf coordinator (SRI)

Door leaf coordinator (SRI)■ Can be integrated in the slide rail

■ Can be integrated in the functional slide rail (26 x 32 mm)■ SRI waiting position with load-limiting device■ SRI waiting position with load-limiting device■ Optional: with integrated microswitch for conjunction
with the FE electromechanical hold-open device■ Optional: with integrated microswitch for conjunction
with the FE electromechanical hold-open device

Opening restrictor (ÖB)

Opening restrictor (ÖB)■ Can be integrated in the slide rail

■ Can be integrated in the standard slide rail (20 x 12 mm)■ Retrofittable■ Retrofittable■ Steplessly adjustable limiting angle up to 180°

■ Steplessly adjustable limit angle up to 120°

Smoke switch module (RSM)

Smoke switch module (RSM)■ With integrated power supply and release mechanism■ With integrated power supply and release mechanism■ With integrated fire detector■ With integrated fire detector■ For electrical power supply of the connected electromechanicalhold-open device and fire detector■ For electrical power supply of the connected electromechanicalhold-open device and fire detector■ Cover in a new design, in the same look as the OTS 73x cover■ Installation height: 36 mm■ Installation height: 36 mm

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All solutions at a glance

Door closer
Name of the closing body variant

OTS 733

OTS 733 BG

OTS 735

OTS 735 BG

OTS 736

OTS 736 BG

OTS 735 FL

OTS 735 FL BG

OTS 736 FL

OTS 736 FL BG

VTS 735

Dimensions (with cover) L x H x D in mm

268 x 63 x 44

268 x 63 x 44

268 x 63 x 44

268 x 63 x 44

268 x 63 x 44

268 x 63 x 44

319 x 65.5 x 45

319 x 65.5 x 45

319 x 65.5 x 45

319 x 65.5 x 45

240 x 45 x 32

Closing force sizes according to EN 1154

3

3

2–5

2–5

3–6

3–6

5

5

6

6

3–5

1-leaf

■

■

■

■

■

■

■

■

■

■

■

2-leaf

■

■

■

■

■

■

■

■

■

■

■

Standard installation on hinge side

■

–

■

–

■

–

■

–

■

–

–

Transom installation
on side opposite to hinges

■

–

■

–

■

–

■

–

■

–

–

Standard installation
on side opposite to hinges

–

■

–

■

–

■

–

■

–

■

–

Transom installation on hinge side

–

■

–

■

–

■

–

■

–

■

–

Application

F

F

F

F

F

F

F

F

F

F

F

Max. leaf width (mm) 1-leaf

950

950

1250

1250

1400

1400

1250

1250

1400

1400

1250

Max. leaf width (mm) 2-leaf

1900

1900

2500

2500

2800

2800

2500

2500

2800

2800

2500

Closing speed

■

■

■

■

■

■

■

■

■

■

■

Latch action / latching speed

■

■

■

■

■

■

■

■

■

■

■

Backcheck

–

–

■ [1]

–

■ [1]

–

–

–

–

–

■

Steplessly adjustable closing force

–

–

■

■

■

■

–

–

–

–

■

Freewheel function from 0°

–

–

–

–

–

–

■

■

■

■

–

Max. door opening and closing angle(hinge side / side opposite to hinges) [3]180° / 120°180° / 120°180° / 120°180° / 120°180° / 120°180° / 120°180° / 120°180° / 120°180° / 120°180° / 120°

120°

Opening restrictor [2]optional

optional

optional

optional

optional

optional

optional

optional

optional

optional

optional

DIN left/right

■

■

■

■

■

■

■

■

■

■

■

FM mechanical hold-open device [4]Adjustable hold-open angle

Steplessly 80° – 140°
(opening beyond holdopen angle possible)

Steplessly 80° – 120°
(opening beyond holdopen angle possible) [3]

Steplessly 80° – 140°
(opening beyond holdopen angle possible)

Steplessly 80° – 120°
(opening beyond holdopen angle possible) [3]

Steplessly 80° – 140°
(opening beyond holdopen angle possible)

Steplessly 80° – 120°
(opening beyond holdopen angle possible) [3]

–

–

–

–

Steplessly from 80°

FE electromechanical hold-open device
Adjustable hold-open angle

Steplessly 85° – 140°
(opening beyond holdopen angle possible)

Steplessly 85° – 120°
(opening beyond holdopen angle possible) [3]

Steplessly 85° – 140°
(opening beyond holdopen angle possible)

Steplessly 85° – 120°
(opening beyond holdopen angle possible) [3]

Steplessly 85° – 140°
(opening beyond holdopen angle possible)

Steplessly 85° – 120°
(opening beyond holdopen angle possible) [3]

–

–

–

–

Steplessly from 80°

Approval for ﬁre and smoke protection doors

Adjustment functions

Installation/functions

Hold-open device (optional)

[1]

[2]

Not eﬀective for transom installation on the side opposite to hinges[3]

Depends on the installation situation, BS = hinge side / BG = side opposite to hinges

No replacement for doorstop[4]

Not approved for smoke and ﬁre protection doors

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27

Installation situations –OTS 73x / OTS 73x BG overhead door closers

Standard mounting on hinge side with OTS 73x

150

458

458

142

16

16

57

65

12

11

11

120

Standard installation on side opposite to hinges with OTS 73x BG

142

160

160

With mounting plateWith mounting plate
458

458

189

43

43

15

38

11
12
30

150

11

120

189

66

66

Without mounting plate

Without mounting plateTransom installation on the side opposite to hinges with OTS 73x

Transom installation on hinge side with OTS 73x BG
142

160
16

160

150

120

458

With mounting plate

458

With mounting plate
189

66

43

66

11
18

11
12

30

30

43

219

12

11

18

11

57

57

16

172

150

458

Without mounting plate28

GU І WP05060-04-2-2 І 04/2015

120

458

Without mounting plate

GU І WP05060-04-2-2 І 04/2015

29

All aspects covered: from hotline for architects to drawings

Systematic Service30

GU І WP05060-04-2-2 І 04/2015

Service and maintenance

Building project consulting

Door engineering

Competent, individual and on location:
when it comes to security areas, ﬁreprotection and barrier freedom, the GU
Group oﬀers comprehensive support inall project phases. Trained experts witha wide range of knowledge of all relevant standards and regulations provide
support for the project from the design
planning phase, to mounting and installation, all the way through to regularsystem maintenance.

Simpliﬁes everyday work: building
project consulting assists architects andplanners with project-speciﬁc drawingsand door schedules, cable diagramsand tender speciﬁcations or conceptual
designs with functional descriptions,for example. Well thought-out andcoordinated system solutions guarantee
functionality and compliance with therequired standards and directives.

Step by step to the right door solution:with its Door Engineering concept,
the GU Group developed an eﬃcientmethod for conﬁguring individual doors.
Cross-trade solutions are preparedbased on experimental models. The documentation ensures maximum planning
reliability based on clearly laid-out door
conﬁguration lists.

Hotline for architects

Seminars and training courses

CE-certiﬁed products

For all those with planning questions or
who require detailed information on the
products of the GU Group: the building
project consultants at the hotline for architects provide personal expert advice:by telephone +49 (0)2051/201-2000,
e-mail objektberatung@g-u.de or canalso be contacted using the form at thecompany website www.g-u.com

Practical knowledge based on ﬁrst handexperience: with around 160 events annually GU Group oﬀers an extremely wide
range of seminars and training courses.
The programme includes product innovations and their applications, current
architectural trends and standards anddirectives. Several seminars and training
courses are certiﬁed and recognised asadvanced training courses by the chamber of architects and civil engineers inGermany.

Safety in black and white: all overhead
door closers in the OTS 73x series are
CE-certified. This is how the GU Group
gives their customers confirmationthat the products meet the requirements of the European Union. In addition, by using CE marking, the GU
Group takes responsibility for the factthat the products fulfil all the characteristics defined in the Declaration of
Performance.

GU І WP05060-04-2-2 І 04/2015

32

AusschreibungsManager
for tenders

Customer Information
SystemconﬁGUrator

Comprehensive, legally sound and technically up-to-date: with the AusschreibungsManager, GU Group is oﬀering architects and planners a convenient andeﬀective online tool that allows them toeﬀortlessly compile technical speciﬁcations and complete tender speciﬁcations– for all GU Group products.

Available at the click of a mouse: theCustomer Information System (CIS) isan ordering and information system
for all GU Group products. Customers
can use the online platform 24 hours a
day 7 days a week to access important
information: from preparing a quotation
through to performing an availability
check in real time, from placing theorder to order tracking.

The right products in the right quantity:
the practical conﬁGUrator is an online
platform where parts lists and hardware
sets can be precisely determined. Basedon the speciﬁcations for the particular
project, a technically correct parts list
is generated within seconds. The data isdetermined based on current conditions
and fundamental technical principles.

Free download

Provision of samples

Quality in black and white

To make planning easier: a wide range of
information on the products and applications is available to download fromthe company website to the local hard
drive quickly, conveniently and free ofcharge: from product documents andinstallation drawings to Declarations of
Performance through to software
solutions.

Impressive not just for builders: quality
and functionality are best experienced
live on site. The GU Group therefore
organises the provision of samples for the
project from start to ﬁnish and can alsopresent diﬀerent versions and functions if
required. As an alternative, the GU Groupoﬀers visits to reference projects worldwide.

You can rely on this: virtually all variantsof the GU Group's range of door closers
are tested and certiﬁed to meet the relevant EN 1154, EN 1155 and EN 1158
standards. And all GU Group hold-open
systems are approved by the DIBt (anauthority of the German state governments for uniform fulﬁllment of technical tasks).

GU І WP05060-04-2-2 І 04/2015

33

A product on its own is not a solution. The right security, function
and cost-eﬀectiveness can only be achieved with the right planningand by ensuring correct application. The GU Group therefore also
applies the systematic thought processes demonstrated in its
product range to its service oﬀering. Close interlinking of one-toone expert advice, free online support and a comprehensive programme of technical seminars aims to make the day-to-day workof customers easier.

GU І WP05060-04-2-2 І 04/2015

31

Printed in Germany

BKS GmbH
Heidestr. 71
D-42549 Velbert
Tel. + 49 (0) 20 51 2 01-0
Fax + 49 (0) 20 51 2 01-97 33

www.g-u.com

WP05060-04-2-2

04/2015

Gretsch-Unitas GmbH
Baubeschläge
Johann-Maus-Str. 3
D-71254 DitzingenTel. + 49 (0) 71 56 3 01-0
Fax + 49 (0) 71 56 3 01-77 980

The modular series of OTS 73x door closers with slide rail
Hinge side
Modular components

DIN
SPEC 1104

1

OTS 73x door closer

1A AD-OTS 73x cover
Order no. K-18338-00-0-*

6

2

1BS OTS 73x closer body3

GS slide rail (with slide arm)

4AD-GS slide rail cover
Order no. K-18364-00-0-*

Order no. K-18351-00-0-*

FM mechanical hold-open device
with ÖB***Order no. K-18369-00-0-6

5

FE electromechanical hold-open device
Order no. K-18368-00-0-6

OTS 733 – Order no. K-18341-00-0-1
OTS 735 – Order no. K-18343-00-0-1
OTS 736 – Order no. K-18345-00-0-1

AD-GS-FE cover for electromechanicalhold-open device

7BS SRI door leaf coordinator

Order no. K-18365-00-0-*8Order no. K-18834-00-0-1

9AD-SRI
cover for door leaf coordinator
Order no. K-18367-00-0-*

RSM smoke switch module

10 MP mounting plate**

Order no. K-19058-00-0-*

11 ÖB Opening restrictor

Order no. K-18280-00-0-0

Order no. K-18916-00-0-6

Sets for 1-leaf solutions
Door closer with GS slide rail
1BS
1A
2

OTS 73x closer body
AD-OTS 73x
GS

Door closer without GS slide rail
1BS
1A

OTS 73x closer body
AD-OTS 73x

 OTS 733 set with GS

K-19060-00-0-*

 OTS 735 set with GS

K-18360-00-0-*

 OTS 736 set with GS

K-18362-00-0-*

 3 AD-GS

K-18364-00-0-*

 4 FM

K-18369-00-0-6

 11 ÖB****

K-18916-00-0-6

 10 MPK-18280-00-0-0

Option: OTS 733 set without GS

K-18496-00-0-*

 OTS 735 set without GS

K-18498-00-0-*

Suitability for ﬁre protection

3 AD-GS
4 FM

2 GS

Complete modular system tested in accordance with

1 OTS 73x

10 MP

▪ EN 1154 (door closer)▪ EN 1158 (door leaf coordinator)▪ EN 1155 (FE electromechanical hold-open device)
and approved for use with ﬁre and smoke protection doors

11 ÖB

The closer type has to be selected depending on the required
closing force size
OTS 733 = EN 3 (door leaf width up to 950 mm)
OTS 735 = EN 2-5 (door leaf width up to 1250 mm)
OTS 736 = EN 3-6 (door leaf width up to 1400 mm)

 OTS 736 set without GS K-18500-00-0-*
Option: 10 MPK-18280-00-0-0
10 MP

1 OTS 73x

Abbreviations
 GS FE-OTS 73x set

GS FE-OTS 73x slide rail
52
6K-18352-00-0-*FE
GS
AD-GS-FE

5 FE

 GS FER-OTS 73x set

GS FER-OTS 73x slide rail
526
9

6 AD-GS-FE

K-18353-00-0-*FE
GS
AD-GS-FE
RSM

AD-OTS 73x
AD-GS
AD-GS-FE

2 GS

AD-SRI
BG
BS
FE
FM
GS
MP
ÖB
OTS
RSM
SRI

6 AD-GS-FE
5 FE

2 GS

9 RSM

Abdeckung Schließerkörper („closer body cover“)
Abdeckung Gleitschiene („slide rail cover“)
Abdeckung Feststellung, elektromechanisch(„cover for electromechanical hold-open device“)
Abdeckung Schließfolgeregler („cover for door leaf coordinator“)Bandgegenseite („side opposite to hinges“)Bandseite („hinge side“)
Feststellung, elektromechanisch („hold-open, electromechanical“)Feststellung, mechanisch („hold-open, mechanical“)
Gleitschiene („slide rail“)
Montageplatte („mounting plate“)Öﬀnungsbegrenzung („opening restriction“)
Obentürschließer („overhead door closer“)Rauchschaltmodul („smoke switch module“)
Schließfolgeregler, integriert („door leaf coordinator, integrated“)Sets for 2-leaf solutions

1A

OTS 73x closer body
AD-OTS 73x

2x K-18496-00-0-*

 OTS 735 set without GS

2x K-18498-00-0-*

 OTS 736 set without GS 2x K-18500-00-0-*
Option: 2x 10 MP

2x K-18280-00-0-0
10 MP

1 OTS 73x

 GS SRI-OTS 73x set

GS SRI-OTS 73x slide rail

Option:2x GS
3 2x AD-GS
7BS SRI
8 AD-SRI
2

K-18354-00-0-*

 2x 4 FM

 GS FE-SRI-OTS 73x set

GS FE-SRI-OTS 73x slide rail

11 ÖB

K-18355-00-0-*

2x GS
5 2x FE
6 2x AD-GS-FE
7BS SRI
8 AD-SRI
2* Colour: silver (-1), black (-6), white RAL 9016 (-7), stainless steel (-8), special colour (-9)** Required for use in ﬁre and smoke protection doors*** Not approved for ﬁre and smoke protection doors**** Not required if an FM (mechanical hold-open) exists

7BS SRI

2 GS

K-18356-00-0-*

2 GS

6 AD-GS-FE
5 FE

2 GS

8 AD-SRI

1 OTS 73x

3 AD-GS
2 GS

4 FM

8 AD-SRI

6 AD-GS-FE

7BS SRI

2 GS

9 RSM

6 AD-GS-FE

7BS SRI

2 GS

11 ÖB

5 FE

5 FE

WP06028-04-2-5

2x GS
5 2x FE
6 2x AD-GS-FE
7BS SRI
8 AD-SRI
9 RSM
2

4 FM

8 AD-SRI

6 AD-GS-FE
5 FE

 GS FER-SRI-OTS 73x set

GS FER-SRI-OTS 73x slide rail

3 AD-GS

2x K-18369-00-0-6

 2x 11 ÖB**** 2x K-18916-00-0-6

10 MP

Printed in Germany

1BS

 OTS 733 set without GS

11/2014

Door closer without GS slide rail

Components shown in grey are optional and have to be ordered separately
With 2-leaf doors it may be necessary to use a carrier bar

The modular series of OTS 73x door closers with slide rail
Side opposite to hinges
Modular components

DIN
SPEC 1104

1

OTS 73x BG door closer

1A AD-OTS 73x cover
Order no. K-18338-00-0-*

6

2

1BG OTS 73x BG closer body3

GS slide rail (with slide arm)

4AD-GS slide rail cover
Order no. K-18364-00-0-*

Order no. K-18351-00-0-*

FM mechanical hold-open device
with ÖB***Order no. K-18369-00-0-6

5

FE electromechanical hold-open device
Order no. K-18368-00-0-6

OTS 733 BG– Order no. K-18342-00-0-1
OTS 735 BG– Order no. K-18344-00-0-1
OTS 736 BG– Order no. K-18346-00-0-1

AD-GS-FE cover for electromechanicalhold-open device

7BG SRI-BG door leaf coordinator

Order no. K-18365-00-0-*8Order no. K-18835-00-0-1

9AD-SRI
cover for door leaf coordinator
Order no. K-18367-00-0-*

RSM smoke switch module

10 MP mounting plate**

Order no. K-19058-00-0-*

11 ÖB Opening restrictor

Order no. K-18280-00-0-0

Order no. K-18916-00-0-6

Sets for 1-leaf solutions
BG door closer with slide rail
1BG
1A
2

OTS 73x BG closer body
AD-OTS 73x
GS

BG door closer without GS slide rail

 OTS 733 BG set with GS

K-19059-00-0-*

 OTS 735 BG set with GS

K-18361-00-0-*

 OTS 736 BG set with GS
Option:K-18363-00-0-*

 3 AD-GS

K-18364-00-0-*

 4 FM

K-18369-00-0-6

 11 ÖB****

K-18916-00-0-6

 10 MPK-18280-00-0-0

Suitability for ﬁre protection

3 AD-GS
4 FM

2 GS

Complete modular system tested in accordance with

1 OTS 73x BG

10 MP▪ EN 1154 (door closer)▪ EN 1158 (door leaf coordinator)▪ EN 1155 (FE electromechanical hold-open device)
and approved for use with ﬁre and smoke protection doors

11 ÖB

The closer type has to be selected depending on the required
closing force size

 OTS 733 BG set without GS K-18497-00-0-*
 OTS 735 BG set without GS K-18499-00-0-*

1BG
1A

OTS 73x BG closer body
AD-OTS 73x

OTS 733 = EN 3 (door leaf width up to 950 mm)
OTS 735 = EN 2-5 (door leaf width up to 1250 mm)
OTS 736 = EN 3-6 (door leaf width up to 1400 mm)

 OTS 736 BG set without GS K-18501-00-0-*
Option: 10 MPK-18280-00-0-0
10 MP

1 OTS 73x BG

Abbreviations
 GS FE-OTS 73x set

GS FE-OTS 73x slide rail
52
6K-18352-00-0-*FE
GS
AD-GS-FE

5 FE

 GS FER-OTS 73x set

GS FER-OTS 73x slide rail
52
6
9K-18353-00-0-*FE
GS
AD-GS-FE
RSM

AD-OTS 73x
AD-GS
AD-GS-FE

6 AD-GS-FE
2 GS

AD-SRI
BG
BS
FE
FM
GS
MP
ÖB
OTS
RSM
SRI-BG

6 AD-GS-FE
5 FE

2 GS

9 RSM

Abdeckung Schließerkörper („closer body cover“)
Abdeckung Gleitschiene („slide rail cover“)
Abdeckung Feststellung, elektromechanisch(„cover for electromechanical hold-open device“)
Abdeckung Schließfolgeregler („cover for door leaf coordinator“)Bandgegenseite („side opposite to hinges“)Bandseite („hinge side“)
Feststellung, elektromechanisch („hold-open, electromechanical“)Feststellung, mechanisch („hold-open, mechanical“)
Gleitschiene („slide rail“)
Montageplatte („mounting plate“)Öﬀnungsbegrenzung („opening restriction“)
Obentürschließer („overhead door closer“)Rauchschaltmodul („smoke switch module“)
Schließfolgeregler integriert, Bandgegenseite(„integrated door leaf coordinator, side opposite to hinges“)Sets for 2-leaf solutions
BG door closer without GS slide rail

 OTS 733 BG set without GS 2x K-18497-00-0-*
 OTS 735 BG set without GS 2x K-18499-00-0-*

1BG
1A

OTS 73x BG closer body
AD-OTS 73x

 OTS 736 BG set without GS 2x K-18501-00-0-*
Option: 2x 10 MP

2x K-18280-00-0-0
10 MP

1 OTS 73x BG

 GS SRI-OTS 73x BG set

GS SRI-OTS 73x BG slide rail

Option:
2
3
7BG
8

2x GS
2x AD-GS
SRI-BG
AD-SRI

2x K-18369-00-0-6

 2x 11 ÖB****

2x K-18916-00-0-6

 GS FE-SRI-OTS 73x BG set

GS FE-SRI-OTS 73x BG slide rail
2
5
6
7BG
8

5
6
7BG
8
9

3 AD-GS
11 ÖB

K-18358-00-0-*

2x GS
2x FE
2x AD-GS-FE
SRI-BG
AD-SRI

5 FE

 GS FER-SRI-OTS 73x BG set

GS FER-SRI-OTS 73x BG slide rail
2

K-18357-00-0-*

 2x 4 FM

2x GS
2x FE
2x AD-GS-FE
SRI-BG
AD-SRI
RSM* Colour: silver (-1), black (-6), white RAL 9016 (-7), stainless steel (-8), special colour (-9)** Required for use in ﬁre and smoke protection doors*** Not approved for ﬁre and smoke protection doors**** Not required if an FM (mechanical hold-open) exists

10 MP

K-18359-00-0-*

4 FM

8 AD-SRI

3 AD-GS
2 GS

4 FM

6 AD-GS-FE

8 AD-SRI

6 AD-GS-FE

2 GS

7BG SRI-BG

2 GS

6 AD-GS-FE
5 FE

7BG SRI-BG

2 GS

1 OTS 73x BG

2 GS

Components shown in grey are optional and have to be ordered separately
With 2-leaf doors it may be necessary to use a carrier bar

8 AD-SRI

9 RSM
7BG SRI-BG

11 ÖB

5 FE

6 AD-GS-FE
2 GS

5 FE