Floor spring

BTS 80
F/EMB/
FLB/BSR

Technical product
brochure
dormakaba BTS 80 F/EMB/FLB/BSR

Floor spring system

for single-leaf and double-leaf doors.

The BTS 80 floor spring system fulfils your requirements

in terms of practicality, convenience and security. It is
also inconspicuous and suitable for doors weighing up to
300 kg.

The floor spring technology is fitted in the floor such that

it is almost completely concealed from view. The BTS 80
floor spring system comes in 3 product variants: the BTS
80 F (floor springs for fire and smoke doors), the BTS 80
EMB (with electro-hydraulic hold-open), and the BTS 80
FLB (with fail-safe function). A wide range of accesso-
ries means it is easy to adapt the BTS 80 floor spring
system to suit different door designs and functions.
The system can also be used on double-leaf doors in
conjunction with the BSR door coordinator.

2
Contents

04 EBTS 80 F/EMB/FLB/BSR
04 Functions and features

06 BSR
06 door coordinator

08 BTS 80 System
08 Accessories
09 Supplied package contents and
10 accessories overview
Specification texts

Our Sustainability Commitment

We are committed to foster a sustainable development along our entire value chain in line with our economic,
environmental and social responsibilities toward current and future generations.
Sustainability at product level is an important, future-oriented approach in the field of construction. In order to
give quantified disclosures of a product’s environmental impacts through its entire life cycle, dormakaba provides
Environmental Product Declarations (EPD), based on holistic life cycle assessments.
The full EPD is available for download at www.dormakaba.com.

3
dormakaba BTS 80 F/EMB/FLB/BSR

Wide range of functions – Concealed installation – Assured quality

With concealed floor installation, dormakaba floor Data and features BTS BTS BTS
springs offer a perfect combination of freedom of design 80 F 80 EMB 80 FLB
and maximum reliability with a wide range of functions. Closing force ≤ 1100 mm EN 4 EN 4 EN 4
They meet the requirements for preventive fire ­protection General doors
≤ 1250 mm EN 5 EN 5 EN 5
and also the need for barrier-free user ­convenience and
≤ 1,400 mm EN 6 EN 6 EN 6
specific functions such as ­electrohydraulic hold-open and
fail-safe. Longstanding design experience and ISO 9001 Closing force ≤ 1100 mm EN 4 EN 4 EN 4
Fire and
certified manufacturing guarantee high quality. smoke doors
≤ 1250 mm EN 5 EN 5 EN 5
≤ 1,400 mm EN 6 EN 6 EN 6
Installation: DIN-L ● ● ●
DIN-R ● ● ●
Double action ● ● –
doors 1)
Advantages listed point by point
Closing time continuously adjustable ● ● ●
using valve
For trade
• Complete range for every need. Latching action continuously ● ● –
• Problem-free material planning adjustable using valve
due to consistent model ­assignment. Backcheck, mechanical ● ● –
• Simple storage of accessories due to matching with the
Delayed closing – – –
­accessories for the dormakaba BTS.
Electro-hydraulic hold-open, – ● –
Continuous hold-open point, 75–180°
For installers
• Effortless handling of individual requirements. Fail-safe 0–180° – – ●
• Interchangeable spindles make it easy to adapt to structural Weight in kg 7.1 7.7 7.7
conditions– even after installation.
• For heavy doors – up to 300 kg. Dimensions Length 341 341 341
in mm
Depth  78  78  78
For planners
Height  60  60  60
• Concealed installation.
• Functions tailored to requirements. Power consumption in W – 2.3 2.3
• Tried and tested, robust construction - Operating voltage ± 15 % V DC –  24  24
can be loaded with a door weight of up to 300 kg.
• All types certified and quality-monitored On-load factor in % – 100 100
or approved by the DIBt, Berlin. Door closers tested in accordance ● ● ●
with
BS EN 1154
For the end user
• Constant movement sequence Hold-open system tested – ● ●
regardless of temperature fluctuations. in accordance with BS EN 1155
• Comparatively easy door access -Identification for construction ● ● ●
due to maximum mechanical efficiency. products
• Maximum security.
● yes – no ○ Option
1)
Not approved for fire doors in Germany.

1 Valve for adjusting the

closing time
2 Valve for adjusting the
latching action
(not BTS 80 FLB)
60

3 Connector with
cable for EMB and FLB
78 341
power supply

51– 57 1 3
36– 42 36– 42
78

4
 Features and functions

BTS 80 F Floor spring

1 Fully controlled closing Can be used on fire protection barriers

with adjustable The BTS 80 F may be used on fire and smoke doors.
2 speed The doors must be specifically designed for connection to
2 Adjustable the floor spring (pivot point offset between door hinges
latching action 36 mm).
1 1 3 Mechanical backcheck An additional certificate of suitability is also required for
the specific fire or smoke door.
3 For use on officially approved fire protection barriers the
provisions of the respective approval certificates must be
observed.

F  Certificate of suitability
The BTS 80 F is tested and quality-monitored by the
Material Testing Institute (MPA) in Dortmund in
Example of left-handed accordance with DIN EN 1154.
design door,
right-handed design
door; mirror image

BTS 80 EMB Floor spring with

electromagnetic hold-open

1 Fully controlled closing Can be used on fire protection barriers

with adjustable speed The BTS 80 EMB may be used on fire and smoke
2 2 Adjustable protection doors.
latching action The doors must be specially designed for connection to
3 Mechanical backcheck the floor spring (pivot point offset between door hinges
1 4 Hold-open area 36 mm).
(Springback approx. An additional certificate of suitability is also required for
4 3°) the specific fire and smoke door.
The provisions of the respective approval certificates
3 must be observed for use on officially approved fire
protection barriers.

F  Certificate of suitability
The BTS 80 EMB is approved for all well-known smoke
Example of left-handed detection systems by the German Institute for Building
design door, Technology [Deutschen Institut für Bautechnik] Berlin;
right-handed design Acceptance test mandatory.
door; mirror image

BTS 80 FLB Floor spring with fail-safe (electromagnetic hydraulic

spring lock)

1 Fail-safe area Can be used on fire protection barriers

2 Fully controlled closing The BTS 80 FLB may be used on fire and smoke
in the event of an protection doors.
alarm or if the power The doors must be specifically designed for connection to
supply is interrupted the floor spring (pivot point offset between door hinges
1
36 mm).
An additional certificate of suitability is also required for
2
the fire or smoke door concerned.
The provisions of the respective approval certificates
must be observed for use on officially approved fire
protection barriers.

F  Certificate of suitability
The BTS 80 FLB is approved for all well-known smoke
Example of left-handed detection systems by the German Institute for Building
design door, Technology] Deutsche Institut für Bautechnik} Berlin;
right-handed design acceptance test mandatory.
door; mirror image

5
dormakaba BTS 80 F/EMB/FLB/BSR

BSR

Door coordinators
F  Certificate of suitability
The BSR door coordinator ensures that the active
door leaf always closes after the passive door leaf on The BSR has been tested by the State Materials
double-leaf doors. Testing Office in Dortmund for use on double-leaf
doors.
In the case of doors with full panic locks, the passive
door leaf must be equipped with a carry bar. Certificate of suitability required for each fire and
smoke door.

ca. 1000-2800
51-57 51-57
15

15
75

75
BTS 80 F/EMB/FLB BTS 80 F/EMB

341 341

MK

Standflg el DIN Rechts

36
36

78
78

200 200

Active door leaf Inactive door leaf

BSR
The BSR door coordinator operates independently of
BTS 80 F BTS 80 F
the hydraulic system of the door closer and consists
of an active and a passive door leaf mechanism
connected via a Bowden cable.
The BSR door coordinator can be used for both LH
and RH doors in combination with BTS 80 F/EMB/
FLB floor springs.

Active Inactive
door leaf door leaf

6
 BSR door coordinators

BTS 80 FB BTS 80 EMB

BTS 80 FB BTS 80 EMB

BTS 80 FB BTS 80 EMB BSR EMB 1

This door coordinator enables both door leaves to be
BTS 80 FB BTS 80 EMB
locked with just one locking device for the passive
door leaf.
The passive door leaf can be set to a hold-open point
of between approx. 75° and 180° (springback approx.
3°). The active door leaf is fixed at any angle up to
Approx. approx. 170° via the door coordinator.
Approx.
170° 180°

Approx. 75°
Active door leaf Inactive door leaf

BTS 80 EMB BTS 80 EMB

BTS 80 EMB BTS 80 EMB BSR EMB 2

With this door coordinator, the active door leaf can
BTS 80 EMB BTS 80 EMB
be locked independently of the passive door leaf.
BTS 80 EMB BTS 80 EMB The hold-open points for both door leaves are
between
approx. 75° and 180° (spring back approx. 3°).

Approx. Approx.
170° 180°

Approx. 75° Approx. 75°

Active door leaf Inactive door leaf

BTS 80 F BTS 80 F
BSR EMB 1 G
BTS 80 F BTS 80 F Using this door coordinator, the active door leaf can
be locked independently in special door constructions,
BTS 80 F BTS 80 F e.g. fixed side leaf, narrow passive door leaf with
asymmetrical doors, etc.
BTS 80 F BTS 80 F The hold-open point is between approx. 75° and 180°
(spring back approx. 3°).
Approx. Approx.
170° 180°

Approx. 75°
Active door leaf Inactive door leaf

BSR FLB 1 G
BTS 80 FLB BTS 80 F This door coordinator with fail-safe on the active door
leaf can also be used where doors need to remain
BTS 80 FLB BTS 80 F freely movable but must close safely in the event of a
fire.
BTS 80 FLB BTS 80 F

BTS 80 FLB BTS 80 F

Active door leaf Inactive door leaf

BTS 80 F BTS 80 F 7

BTS 80 F BTS 80 F
dormakaba BTS 80 F/EMB/FLB/BSR

Application and installation

DIN L DIN R

Double action door Single action door

Notch on DIN-L doors Notch on DIN-R doors

Accessories

BTS 80 Universal cover plate

358
BTS 80 79 The universal cover plate can be used on both
358
left-handed and right-handed design doors by simply
79 1,5 ejecting the pre-punched corner parts. In the case of
35 35

1,5 double action doors, it is mounted as delivered. The

105 105

cover plate is optionally available in stainless steel or

35 35

brass, brushed matt (material thickness 1.5 mm).

58
58
BSR 388
BSR 79 BSR cover plate
388
79 The cover plates for the BSR are available in
1,5
left and right-handed designs.
36 36

1,5
105 105

The cover plate is optionally available in stainless steel

or brass, brushed matt (material thickness 1.5 mm).
58
58 Example of left-handed
design door,
right-handed design door;
mirror image

Ø 25
Z
3

8
Z
X

dormakaba 2300 sealing compound

For filling the cavities between the closer housing and
Calculation of the required axle extension: the cement box to prevent the ingress of moisture
Extension = X – floor clearance (normally 8 mm) (required for damp rooms etc. according to VOB).
For additional accessories such as door levers and
Collar height Z of the extended spindles = axle extension pivot hinges see technical information “Accessories for
+ 3 mm (collar height of the normal spindle) dormakaba BTS floor springs”.

8
Product contents and accessories

Floor spring Spindles Sealing

BTS 80 F/EMB/FLB com-
Includes cement box pound
without spindle 2300

Extension in mm

Normal
5 7.5 10 12.5 15 20 25 28 30 35 40 45 50

45200408
45200404

45200405

45200406

45200409
45200402

45200403

45200407
45200401

45200410
45200419

45200414

45200412
45200411
45090086

BTS 80 F

EN 4 DIN-L 80220101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 80220201
Pendulum 1) 80220001
EN 5 DIN-L 80210101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 80210201
Pendulum 1) 80210001
EN 6 DIN-L 80230101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 80230201
Pendulum 1) 80230001

BTS 80 EMB

EN 4 DIN-L 82224101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 82224201
Pendulum 1) 82224001
EN 5 DIN-L 82214101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 82214201
Pendulum 1) 82214001
EN 6 DIN-L 82234101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 82234201
Pendulum 1) 82234001
BTS 80 FLB

EN 4 DIN-L 82124101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 82124201
EN 5 DIN-L 82114101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 82114201
EN 6 DIN-L 82134101 △ △ △ △ △ △ △ △ △ △ △ △ △ △ △
DIN-R 82134201
Universal cover plate

Stainless steel 46700000

△
Brass, brushed matt 46700100
1)
Not approved for fire doors in Germany

BSR door coordinator Floor spring Spindles Cover plates

Left-handed design

Stainless steel 46700080

Extension Brass, brushed matt
in mm
Normal

46700280

5 25 DIN-R

Stainless steel
45200470

45200477
45200471

46700081
BTS 80 BTS 80 BTS 80 Brass, brushed matt
Versions 45700900 F EMB FLB 46700281
BSR 1x 2x
BSR-EMB 1 1x 1x 1x
△
△ △ △
BSR-EMB 2 1x 2x 1 x left-handed design
2x 2x 2x
1 x right-handed design
BSR-EMB 1 G 1x 1x 1x
BSR-FLB 1 G 1x 1x 1x
△ Accessories

9
dormakaba BTS 80 F/EMB/FLB/BSR

Specification texts

BTS 80 F
Floor spring tested in accordance with BS EN 1154; Size Accessories
with marking, fully hydraulically controlled closing ☐ EN 4 ☐ Universal cover plate (1.5 mm thick)
cycle from 180°, adjustable latching action and ☐ EN 5 ☐Stainless
steel
backcheck. ☐ EN 6 ☐Brass,
brushed matt
☐ Spindle
☐ Standard
Version ☐ ... mm extension
☐ DIN left ☐ Sealing compound
☐ DIN right
☐ Double action (not approved for fire
doors in Germany) Make:
dormakaba BTS 80 F
BTS 80 EMB
Floor spring tested in accordance with EN 1154, with Size Accessories
marking, electro-hydraulic hold-open tested in ☐ EN 4 ☐ Universal cover plate (1.5 mm thick)
accordance with EN 1155 and integrated pressure ☐ EN 5 ☐Stainless
steel
compensation for constant, adjustable, non- ☐ EN 6 ☐Brass,
brushed matt
temperature sensitive hold-open for holding the door ☐ Spindle
open between 75° and 180°. ☐ Standard
With adjustable, fully hydraulically controlled closing Version ☐ ... mm extension
time, adjustable latching action and backcheck, ☐ DIN left ☐ Sealing compound
including cement boxes. ☐ DIN right
☐ Double action (not approved for fire
Operating voltage: 24 V DC doors in Germany) Make:
Power consumption: 2.3 W dormakaba BTS 80 EMB
Approved by the Deutsches Institut für Bautechnik
(DIBt), Berlin (Germany), for use in hold-open
systems.
Acceptance inspection mandatory.

BTS 80 FLB
Floor spring tested in accordance with EN 1154, with Size Accessories
marking, with electrohydraulic fail-safe function ☐ EN 4 ☐ Universal cover plate (1.5 mm thick)
between ☐ EN 5 ☐Stainless
steel
0° and 180° door opening; closing action (non- ☐ EN 6 ☐Brass,
brushed matt
powered) from 180°, adjustable, hydraulically fully ☐ Spindle
controlled closing speed and backcheck (non- ☐ Standard
powered), including cement boxes. Version ☐ ... mm extension
☐ DIN left ☐ Sealing compound
Operating voltage: 24 V DC ☐ DIN right
Power consumption: 2.3 W
Make:
Approved by the Deutsches Institut für Bautechnik
(DIBt), Berlin (Germany), for use in hold-open dormakaba BTS 80 FLB
systems.
Acceptance inspection mandatory.

BTS 80 BSR
Floor spring tested in accordance with EN 1154, with Size Accessories
marking, fully hydraulically controlled closing cycle ☐ EN 4 ☐ Cover plate (1.5 mm thick)
from 180°, adjustable latching action, backcheck and ☐ EN 5 ☐Stainless
steel
door coordinator, which functions independently from ☐ EN 6 ☐Brass,
brushed matt
the door closer hydraulics, tested in accordance with ☐ Spindle
EN 1158; consists of an active leaf mechanism and a ☐ Standard
passive leaf mechanism, which are interconnected by ☐ ... mm extension
a Bowden cable, including cement boxes, left-handed ☐ Sealing compound
design and right-handed design applicable.
Approved by the German Institute for Building Make:
Technology, Berlin, dormakaba BTS 80 BSR
in conjunction with fire and smoke doors

10
 Specification texts

BTS 80 BSR-EMB 1
Floor spring tested in accordance with EN 1154, with marking, Size Accessories
electro-hydraulic hold-open tested to EN 1155 on the passive door ☐ EN 4 ☐ Cover plate (1.5 mm thick)
leaf, and integrated pressure compensation for constant, ☐ EN 5 ☐Stainless
steel
adjustable, non-temperature sensitive hold-open for holding the ☐ EN 6 ☐Brass,
brushed matt
door open between 75° and 180°. With adjustable, fully hydraulically ☐ Spindle
controlled closing speed, adjustable latching action, backcheck and ☐ Standard
door coordinator, which functions independently from the door ☐ ... mm extension
closer hydraulics tested to EN 1158; consists of an active door leaf ☐ Sealing compound
mechanism and a passive door leaf mechanism, which are
interconnected by a Bowden cable, including cement boxes,
Make:
left-handed/right-handed design applicable.
dormakaba BTS 80 BSR-EMB 1
Operating voltage: 24 V DC
power consumption: 2.3 W
Approved by the Deutsches Institut für Bautechnik (DIBt), Berlin
(Germany), for use in hold-open systems.

BTS 80 BSR-EMB 2
Floor spring tested in accordance with EN 1154, with marking, Size Accessories
electro-hydraulic hold-open tested in accordance with EN 1155 on ☐ EN 4 ☐ Cover plate (1.5 mm thick)
the passive and active door leaves, and integrated pressure ☐ EN 5 ☐Stainless
steel
compensation for constant, adjustable, non-temperature sensitive ☐ EN 6 ☐Brass,
brushed matt
hold-open for holding the door open ☐ Spindle
between 75° and 180°. With adjustable, fully hydraulically controlled ☐ Standard
closing time, adjustable latching action, backcheck and door ☐ ... mm extension
coordinator, which functions independently from the door closer ☐ Sealing compound
hydraulics tested in accordance with EN 1158; consists of an active
door leaf mechanism and a passive door leaf mechanism, which are
Make:
interconnected by a Bowden cable, including cement boxes,
left-handed design and right-handed design applicable. dormakaba BTS 80 BSR-EMB 2
Operating voltage: 24 V DC
power consumption: 4.6 W
Approved by the Deutsches Institut für Bautechnik (DIBt), Berlin
(Germany), for use in hold-open systems.

BTS 80 BSR-EMB 1G
Floor spring tested in accordance with EN 1154, with marking, Size Accessories
electro-hydraulic hold-open tested in accordance EN 1155 on the ☐ EN 4 ☐ Cover plate (1.5 mm thick)
active door leaf, and integrated pressure compensation for ☐ EN 5 ☐Stainless
steel
constant, adjustable, non-temperature sensitive hold-open for ☐ EN 6 ☐Brass,
brushed matt
holding the door open between 75° and 180°. ☐ Spindle
With adjustable, fully hydraulically controlled closing time, adjustable ☐ Standard
latching action, backcheck and door coordinator, which functions ☐ ... mm extension
independently from the door closer hydraulics tested to EN 1158; ☐ Sealing compound
consists of an active leaf mechanism and a passive leaf mechanism,
which are interconnected by a Bowden cable, including cement
Make:
boxes, left-handed design and right-handed design applicable.
dormakaba BTS 80 BSR-EMB 1G
Operating voltage: 24 V DC
power consumption: 2.3 W
Approved by the Deutsches Institut für Bautechnik (DIBt), Berlin
(Germany), for use in hold-open systems.

BTS 80 BSR-FLB 1G
Floor spring tested in accordance with EN 1154, with marking, Size ☐ Cover plate (1.5 mm thick)
electro-hydraulic fail-safe on the active door leaf for door opening ☐ EN 4 ☐Stainless
steel
between 0° to 180°, closing action (non-powered) from 180°, ☐ EN 5 ☐Brass,
brushed matt
hydraulically fully controlled closing time, adjustable backcheck ☐ EN 6 ☐ Spindle
(non-powered), door coordinator, which functions independently ☐ Standard
from the door closer, hydraulics, tested in accordance with EN 1158; ☐ ... mm extension
consists of an active leaf mechanism and a passive leaf mechanism, ☐ Sealing compound
which are interconnected by a Bowden cable, including cement
boxes, left-handed design and right-handed design applicable. Make:
Operating voltage: 24 V DC dormakaba BTS 80 BSR-FLB 1G
power consumption: 2.3 W
Approved by the Deutsches Institut für Bautechnik (DIBt), Berlin Accessories
(Germany), for use in hold-open systems. Acceptance inspection
mandatory.

11
 0.6, JP/LD,
DE,Produkt, JP/XXXXX, XX/19
D, X,04/21
vorbehalten
modifications.
XX/19,
05063751532, 10/21,
Änderungen
WN XXXXXXXXXXX,
Subject to technical
Technische

dormakaba Deutschland GmbH

DORMA Platz 1
DE-58256 Ennepetal
T +49 2333 793-0
info.de@dormakaba.com
www.dormakaba.de

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LU-6868 Wecker
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office.at@dormakaba.com
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info.ch@dormakaba.com
Hotelzutrittssysteme Services www.dormakaba.ch