G-U RZ 25 User manual

0-46003-IA-0-EN
02 | 12.2015 | G31553 | Designed in Germany
WINDOW TECHNOLOGY
RZ 25 | RZ 50 | RZ 75
RWA compact control unit
Installation and operating instructions
EN

2EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
Table of contents
1. Safety instructions and definitions............................................ Page 4
1.1 Warning symbols...........................................................................................................Page 4
1.2 Safety instructions ........................................................................................................Page 4
1.3 General information .....................................................................................................Page 5
1.4 Definition........................................................................................................................Page 5
1.5 Intended use...................................................................................................................Page 5
2. Product description.................................................................... Page 6
2.1 General product features.............................................................................................Page 6
2.2 Functions ........................................................................................................................Page 6
2.3 Technical data ................................................................................................................Page 6
2.4 Components and accessories......................................................................................Page 7
3. Preparation for use..................................................................... Page 8
3.1 Safety instructions for mounting and installation...................................................Page 8
3.2 Layout of compact control unit...................................................................................Page 8
3.3 Dimensioning.................................................................................................................Page 10
3.3.1 Current values of RWA compact control units.........................................................Page 10
3.3.2 Current consumption of drives ...................................................................................Page 10
3.3.3 Rating of output current ..............................................................................................Page 10
3.4 Wiring diagram ..............................................................................................................Page 11
3.5 Calculation of cable cross-section and length..........................................................Page 12
3.5.1 Calculation of cable cross-section with drives of the same type ..........................Page 12
3.5.2 Calculation of cable cross-section with different drives.........................................Page 12
3.6 Mounting ........................................................................................................................Page 13
3.6.1 Description of components.........................................................................................Page 13
3.6.2 Wall mounting................................................................................................................Page 13
3.6.3 Wall mounting with IP mounting kit for non-dry rooms.........................................Page 13
4. Installation (electrical connection)............................................ Page 14
4.1 Safety instructions........................................................................................................Page 14
4.2 Connection of power supply .......................................................................................Page 14
4.2.1 Establishing the power supply ....................................................................................Page 14
4.2.2 Connection of batteries ...............................................................................................Page 15
4.3 Connection of components.........................................................................................Page 17
4.3.1 Retransmission of statuses..........................................................................................Page 20
4.3.2 Networking of control units ........................................................................................Page 20
4.3.3 Connection of central control and display elements...............................................Page 22
5. Putting into operation................................................................ Page 24
5.1 Safety instructions for bringing into operation .......................................................Page 24
5.2 Displays and operation.................................................................................................Page 24
5.2.1 External displays and operating elements ................................................................Page 24
5.2.2 Internal displays and operating elements.................................................................Page 26
5.3 Bringing the BKS-NET into operation........................................................................Page 29

3
Translation of the original instructions
Please pass this document on to the user!
6. Operating guide.......................................................................... Page 30
6.1 Safety instructions for operation ...............................................................................Page 30
6.2 Ventilation mode...........................................................................................................Page 30
6.2.1 Basic function ................................................................................................................Page 30
6.2.2 CLOSE in the event of power failure..........................................................................Page 30
6.2.3 Runtime limitation ........................................................................................................Page 30
6.2.4 Automatic ventilation CLOSE......................................................................................Page 31
6.2.5 Weather control.............................................................................................................Page 31
6.3 Alarm ...............................................................................................................................Page 32
7. Maintenance and cleaning ......................................................... Page 32
7.1 Safety instructions for maintenance and cleaning ..................................................Page 32
7.2 Maintenance...................................................................................................................Page 32
7.3 Restoring the delivery condition ................................................................................Page 33
7.4 Cleaning ..........................................................................................................................Page 33
7.5 Warranty.........................................................................................................................Page 33
8. Disposal....................................................................................... Page 34
8.1 Safety instructions for disposal .................................................................................Page 34
8.2 Disposal...........................................................................................................................Page 34
9. Standards and directives............................................................ Page 34
9.1 Directives........................................................................................................................Page 34
9.2 TÜV Thüringen certificate............................................................................................Page 35
10.Appendix..................................................................................... Page 36
10.1 Troubleshooting.............................................................................................................Page 36

4EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
1. Safety instructions and definitions
1.1 Warning symbols
DANGER denotes a dangerous situation which, if not avoided, could lead to death or serious injury.
WARNING denotes a dangerous situation which, if ignored, could lead to death or serious injury.
CAUTION denotes a dangerous situation which, if not avoided, could lead to injuries.
ATTENTION denotes a situation which could lead to material damage.
1.2 Safety instructions
The general accident prevention regulations, the accident prevention regulations for powered
windows and doors and the installation directives of VDE (German Association of Electrical
Engineers) are to be observed.
Exposed live parts!
Danger to life from electric shock!
Disconnect the control unit from the 230 V mains voltage before working on it.
Disconnect the batteries before working on the control unit!
Make sure that voltage from external components is not applied!
Verify that the system is safely isolated from the power supply!
Regulations for installation and assembly
RWA compact control units may only be fitted, installed, repaired and serviced by trained specialist
personnel.
For Germany: When planning the use of a smoke and heat vent system, and also when installing it,
the following directives referring to safety must be observed:
 Building code of the particular Federal State,
 DIN 18 232 for industrial smoke and heat exhaust ventilation systems,
 DIN VDE 0100, DIN VDE 0108, DIN VDE 0833 and DIN 4102, part 12,
 provisions of the relevant fire protection authorities,
 provisions of the local power supply companies
 Directive for model line systems (MLAR)
Important advice on cable laying
 The electrical installation must be carried out by an electrical engineer in compliance with the
regional/national directives and regulations. The VDE standards and the valid MLAR directive
must be taken into consideration.
 We recommend that cable types and the installation method should be coordinated with the
relevant fire protection authorities or the mandated expert.
DANGER
DANGER
WARNING
CAUTION
ATTENTION

5
 Use the formula in chapter „3.5 Calculation of cable cross-section and length“ on page12 to
calculate the maximum permissible line lengths of the drive supply cable and the required cross-
sections.
 For low voltage operation use cables without earth wire only!
1.3 General information
The Assembly and Operating Instructions are an important part of the delivery. These instructions
contain important information on the product and how to use it safely and reliably, especially the
sections marked by warning symbols in chapter 1.1!
Read these instructions through carefully before installation and initial use and refer to them during
mounting and installation.
Once the installation is complete, hand over the instructions to the user. Instruct the user on how to
use the product so that this person knows what to do at all times, e.g. during:
 Operation, troubleshooting, handling.
 Maintenance, cleaning, service, inspection, repair, and disposal.
Point out to users that they must keep the instructions handy in order to be able to refer to them
during subsequent maintenance.
1.4 Definition
RWA systems are smoke and heat exhaust ventilation systems that open RWA openings in the event
of fire in order to remove combustion gases. This action is triggered either by manual alarms (manual
call point RWA push-button HSE) or by automatic alarms. Windows or doors are generally used as
RWA openings in order to achieve the prescribed opening cross-section for the building.
The objective is to keep the escape routes smoke-free in the event of fire.
1.5 Intended use
According to the obligations defined in the German Product Liability Act (§ 4 ProdHaftG) to be met by a
manufacturer in relation to his products, the following information in these instructions must be observed.
Non-compliance with these instructions will exempt Gretsch-Unitas GmbH Baubeschläge from liability.
The entire system must only consist of GU components or components approved by GU. Use of
combinations not approved by Gretsch-Unitas GmbH Baubeschläge and/or improper installation of
the system and/or use of non-genuine accessory parts, or parts not approved at the factory, will lead
to exclusion of liability.
In order to perform the assembly and installation correctly, the directions in the GU installation drawings
and the GU Assembly and Operating Instructions must be observed. When using components by other
manufacturers approved by GU, the instructions of these manufacturers must also be observed.
The operator, or installer authorised by the operator, must plan and calculate the wiring system
according to statutory requirements. We recommend you test the insulation of the wiring for the
system and document this before releasing it for operation. All functions of the system must be
carefully checked before releasing it for operation.
Please get in touch with our experts if you require support with planning and installation of the system.
Check the delivered equipment immediately upon receipt and check it for possible transport
damage. Check against the delivery note that the delivered goods are complete. Any complaints
subsequently made cannot be recognised.
Please note that a log book must be kept for the compact control units RZ 25 / RZ 50 / RZ 75 and
stored where the trained personnel can access it at all times.

6EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
2. Product description
2.1 General product features
The RWA compact control units RZ 25 / RZ 50 / RZ 75 are compact control units whose purpose is to
execute ventilation functions, and also smoke and heat exhaust ventilation functions in the event of fire.
The power and emergency power supply and control electronics are located in one housing. In the event
of a power failure, an emergency power supply ensures that the smoke and heat exhaust ventilation
function is available for 72 hrs. The ventilation functions are deactivated if the power supply fails.
The control units are equipped with two monitored alarm lines to which manual call points (HSE) or
automatic detectors can be connected, or an external fire alarm system (FAS) linked.
2.2 Functions
 Smoke and heat exhaust ventilation function according to prEN 12101-9 and EN 12101-10 (i.e.
72 hrs operational readiness)
 Ventilation functions with time control
 Ventilation functions with weather control
 Central ventilation functions through networking of individual systems
 Linking of alarm lines
 Integrated service and maintenance monitoring
 Signalling of statuses to higher-level building control system (BCS)
2.3 Technical data
Power supply
 Operating voltage 100 - 240 V, 50 - 60 Hz ± 10%
 Protection class I
 Maximum current consumption 2 A (RZ 25) / 3 A (RZ 50) / 2.2 A (RZ 75)
 Output voltage 26 V controlled (adjustable between 22 V and 27 V)
 Output current 3.2 A (RZ 25) / 6.5 A (RZ 50) / 8.4 A (RZ 75)
 Duty ratio 40 %
Housing
 Dimensions 296 mm x 296 mm x 112 mm
335 mm x 296 mm x 116 mm
(with opt. IP mounting kit)
 Protection type IP 20
IP 54 (with optional IP mounting kit)
 Material: Sheet-steel, RAL 9010
Battery
 Nominal battery voltage 2 x 12 V
 Nominal battery capacity 2.3 Ah (RZ 25); 3.2 Ah (RZ 50 / RZ 75)
 Batterytype Leadgel
 Battery replacement every 4 years
 Temperature compensation of charging circuit

7
Environmental conditions
 Ambient temperature range -5°C to +40°C
Maximum contact load, output relay
 Alarm (only RZ 50 / RZ 75) 30 V / 1 A DC,
230 V / 8 A AC
 Fault (only RZ 50 / RZ 75) 30 V / 1 A DC,
230 V / 8 A AC
Connection of periphery
 Drive line (with line monitoring) 1
 Automatic smoke detector (with line monitoring) max. 10 hrs
 RWA push-button (HSE) (with line monitoring) max. 10 hrs
 Ventilation push-button with LED max. 10 hrs
without LED any
 Rain sensor with heating
 Wind turbine only RZ 50 / RZ 75
 Connection of weather station via potential-free contact
Standards and directives
EN 60950-1, DIN EN 61010-1, DIN EN 50130-4
2.4 Components and accessories
Scope of delivery
RWA compact control unit RZ 25 K-18328-00-0
RWA compact control unit RZ 50 K-18329-00-0
RWA compact control unit RZ 75 K-18433-00-0
consisting of:
 Compact control unit pre-mounted and pre-wired
 Batteries integrated RZ 25 (2,3 Ah) 9-47475-00-0
RZ 50 / RZ 75 (3,2 Ah) 9-48529-00-0
 Line termination module/interface module for BMA 9-48836-00-0
 Installation and operating instructions
Optional accessories
 IP mounting kit (for protection type IP 54) K-18830-00-0
 RWA push-button HSE Plastic version: 6-37311-00-0
Metal version: 6-37312-00-0
 RMD3smokedetector K-18883-00-0
 WMD3heatdetector K-18884-00-0
 InterfacemoduleBKS-NET 9-48897-00-0
 Line termination module/interface module for BMA 9-48836-00-0
 Input/outputmoduleIO10 B55800321
 Key switch ST10 / ST20
 Inspection log RWA compact control unit K-18940-00-0

8EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
3. Preparation for use
3.1 Safety instructions for mounting and installation
Danger to life due to electric shock!
Read the safety instructions in chapter„1.2 Safety instructions“ on page4 without fail prior
to assembly and installation.
DANGER
3.2 Layout of compact control unit
243
11a ab
c
g
e
d
f
Layout of compact control unit RZ 25
Components
1 Housing
1a Protective-conductor terminal in
the housing
2 Power supply unit
3 Batteries
4 Board
Board
a Drive connection
b Connections for components
with terminal resistors
c Fuses
d Service interface
e Jumper J1, J2 and pin connectors
f DIP switch and potentiometer
g Display LEDs and reset push-
button
4

9
Fuses
Fuses
Fuse
number
Fuse RZ 25 RZ 50 RZ 75
Glass tube fuse 5 x 20 mm
F2 Battery 1 6.3 A, slow-blow 10 A, slow-blow 10 A, slow-blow
F3 Battery 2 6.3 A, slow-blow 10 A, slow-blow 10 A, slow-blow
F4 Motor line 4 A, slow-blow 8 A, slow-blow 8 A, slow-blow
243 ab
11a
c
e
d
g
f
Layout of compact control units RZ 50 / RZ 75
Components
1 Housing
1a Protective-conductor terminal in
the housing
2 Power supply unit
3 Batteries
4 Board
Board
a Drive connection
b Connections for components
with terminal resistors
c Fuses
d Service interface
e Jumper J1, J2 and pin connectors
f DIP switch and potentiometer
g Display LEDs and reset push-
button
4

10 EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
3.3 Dimensioning
3.3.1 Current values of RWA compact control units
3.3.2 Current consumption of drives
3.3.3 Rating of output current
Power is supplied by the power supply unit to the connected devices (rain sensor) or bus participant
(IO10, ST10/20) directly via the RZ XX-Master. The current consumption must be taken into account
in this case and reduced accordingly depending on the number of drives connected.
Calculation example:
Requirement: operation of 5 pcs K35 with rain detector
Calculation: 5 pcs K35 drives
Breaking current per K35 drive: 1.2 A
Total current 5 pcs K35 drives: 5 x 1.2 A = 6.0 A
Current consumption of rain detector: 0.25 A
Total current: 6.0 A + 0.25 A = 6.25 A
Selected control unit: RZ 50 (with a max. interrupting current of 6.5 A)
Compact control
unit
Max. output current
Nominal current Breaking current
RZ 25 2,5 A 3,2 A
RZ 50 5 A 6,5 A
RZ 75 7,5 A 8,4 A
Current consumption of drives
Device Nominal
current
Breaking
current
K25 0.8 A 1.0 A
K30 0.9 A 1.2 A
K35 0.95 A 1.2 A
K60 0.8 A 1.2 A
S80 1.0 A 1.4 A
S160 0.7 A 2.5 A
S 24 L 0.7 A 0.9 A
300/24 0.8 A 0.8 A
TA 60 1.4 A 1.4 A
RWA 1000* 0.8 A 1.4 A
RWA 1050** 0.6 A 1.2 A
RWA 1100* 0.8 A 1.4 A
VA25 0.7 A 0.7 A
VA35 0.7 A 0.7 A
VAN 1.5 A 1.5 A
OA 1.1 A 1.1 A
* with S100
** with S60
Maximum number of drives
Drive Max. number of drives with compact control unit
RZ 25 RZ 50 RZ 75
K25 368
K30 257
K35 257
K60 257
S80 246
S160 123
S 24 L 379
300/24 469
TA 60 135
RWA 1000 246
RWA 1050 257
RWA 1100 246
VA25 4912
VA35 4912
VAN 245
OA 257
Device Current consumption
Rain detector 250 mA
IO10 100 mA
ST10/20 25 mA

11
3.4 Wiring diagram
Item Connecting
terminal
Maximum
cable cross-section
Recommended
cable type
Maximum
cable length
1 Feeder 2.5 mm² NYM-J 3x1.5 mm² --
2 Drive (motor) 4 mm² NHXH-FE 180/E30 min. 3x1.5 mm² Depends on current
consumption of motor
3 Ventilation 1.5 mm² J-Y(ST)Y 4x2x0.8 400 m
4 RWA / Fire-Button 1.5 mm² JE-H(St)H FE 180/E30 4x2x0.8 400 m
5 Sensor in 1.5 mm² JE-H(St)H FE 180/E30 2x2x0.8 400 m
6 Wind / Rain 1.5 mm² NYM-O 5 (7) x1.5 mm² 200 m
7 RS-485 1.5 mm² J-Y(ST)Y 2x2x0.8 200 m
8 Alarm 1.5 mm² J-Y(ST)Y 2x2x0.8 200 m
9 Error 1.5 mm² J-Y(ST)Y 2x2x0.8 200 m
a Cable bushings in the housing
a
Wiring diagram using RZ 50 / RZ 75 as example
1234
5
6
7
8
9

12 EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
3.5 Calculation of cable cross-section and length
3.5.1 Calculation of cable cross-section with drives of the same type
Cable cross-section [mm²] =
Single cable length [m] =
Calculation example:
Requirement: Operation of 5 pcs. K35 in a stairwell with a single cable length of 25m
between the RWA compact control unit and drives.
Calculation: Cable cross-section [mm²] =
Cable cross-section [mm²] = = 2.72
Selected cable cross-section: 3.0 mm²
3.5.2 Calculation of cable cross-section with different drives
The cable cross-section is calculated using the cable length and the sum of the breaking currents of
the drives to be connected.
Min. cable cross-section [mm²] =
Single cable length [m] x number of drives
Factor fdrive
Cable cross-section [mm²] x factor fdrive
Number of drives
Drive 300/24 S 24 L K25 K30
K35
K60
RWA1050
S80
TA60
RWA1000
RWA1100
S160 VA25
VA35
VAN OA
Factor fDrive 73 62 56 46 40 22 80 37 51
Single cable length [m] x Number of drives
Factor fK35
25 m x 5
46
Single cable length [m] x sum of breaking currents [A]
56
Maximum cable length (compact control unit – drive)
Cable cross-
section
Sum of breaking currents
1 A 2 A 3 A 3.2 A 4 A 5 A 6 A 6.5 A 7 A 8 A 8.4 A
3x 1 mm² 56 m 28 m 18 m 17 m 14 m 11 m 9 m 8 m 8 m 7 m 6 m
3x 1.5 mm² 84 m 42 m 28 m 26 m 21 m 16 m 14 m 12 m 12 m 10 m 10 m
3x 2.5 mm² 140 m 70 m 46 m 43 m 35 m 28 m 23 m 21 m 20 m 17 m 16 m
3x 3.0 mm² 168 m 84 m 56 m 52 m 42 m 33 m 27 m 25 m 24 m 21 m 20 m
5x 2.5 mm² * 280 m 140 m 93 m 87 m 70 m 56 m 45 m 43 m 40 m 35 m 33 m
* Doubling of the live cores (produces a cable cross-section of 5.0 mm² each)

13
3.6.2 Wall mounting
 Attach the housing of the RWA compact control unit to the wall via the four fixing holes
provided, observing the distances between fixing holes specified in the illustration
„Components of RWA compact control unit“ on page13.
Use the screws and plugs provided providing they are suitable for the wall.
3.6.3 Wall mounting with IP mounting kit for non-dry rooms
 Attach the base plate of the IP mounting kit to the wall via the fixing holes provided, observing
the distances between the fixing holes specified in the illustration „Components of RWA
compact control unit“ on page13.
 Insert the hexagon-head screws provided into the four holes in the housing of the RWA compact
control unit and screw the housing to the base plate of the IP mounting kit.
Only use the housing cover provided with the IP mounting kit as otherwise the necessary
ingress protection cannot be guaranteed.
ATTENTION
3.6 Mounting
3.6.1 Description of components
290
116
296
112
(mit IP-Montageset) 335
296
(mit IP-Montageset)
242
310
240
(mit IP-Montageset) (mit IP-Montageset)
260
296
1
2
1
2
3
4
3
4
3
4
3
4
Components of RWA compact control unit
Components
1 Housing of RWA compact control unit
2 Base plate of IP mounting kit
3 Fastening holes in housing
4 Fastening holes in IP mounting kit
(with IP mounting kit)
(with IP mounting kit)
(with IP mounting kit)
(with IP mounting kit)

14 EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
4. Installation (electrical connection)
4.1 Safety instructions
Danger to life due to electric shock!
The power supply to the RWA compact control unit must have on-site fuse protection.
Always have the installation carried out by a trained electrical specialist!
4.2 Connection of power supply
4.2.1 Establishing the power supply
 Take out the power supply unit by removing the fixing screw at the terminal clamps of the power
supply unit (see illustration below).
 Establish the connection with the power supply as shown in the figure „Wiring diagram for
power supply unit and earthing“.
 Reinstall the power supply unit in the compact control unit.
WARNING
10 A
LN
(AC)
Fixing screw for
power supply unit
Mains fuse
10 A on site
Earthing cable at
housing lug
Wiring diagram for power supply unit

15
Establish the electrical connection between the mounting plate of the optional IP mounting kit and the housing
To establish the electrical connection between the mounting plate of the IP mounting kit and the
housing, proceed as follows:
 First, with the housing mounted, insert the toothed lock washer on the threaded pin of the IP
mounting kit base plate
 Place the washer on the toothed lock washer
 Screw the hexagon nut onto the threaded pin on the base plate of the IP mounting kit applying
a torque of 3 Nm to establish an electrical connection between the IP base plate and housing via
the toothed lock washer.
4.2.2 Connection of batteries
Reversing of the poles or incorrect connection of the batteries will damage the compact control
unit beyond repair!
If the batteries are connected incorrectly, the compact control unit may be damaged!
 Insert the provided batteries at an angle by their protruding tab and press them into the housing
without exertion of force. (Figure page16). Fasten the batteries in the housing using the pre-
mounted cable ties.
 Remove the protective caps on the battery terminals

Attach the colour-coded twin cable provided for this purpose via the cable shoes on the battery terminals.
Connect one twin cable to one battery as follows:
Cable marked red from connection „A1+“ to the positive terminal of the first battery
marked red
Unmarked black cable from connection „A1–“ to the negative terminal of the first
battery marked black
Cable marked red from connection „A2+“ to the positive terminal of the second battery
marked red
Unmarked black cable from connection „A2–“ to the negative terminal of the second
battery marked black
ATTENTION
Earthing of base plate of IP mounting kit
Earthing of base plate
using toothed lock
washer, washer and
hexagon nut
Base plate
IP mounting kit
RWA
compact control unit

16 EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
Connection of batteries
RZ 25
RZ 50
RZ 75
Power supply unit
Battery 2
Battery 1

17
4.3 Connection of components
Connection of drives (motor)
Line termination module/
Interface
module
for FAS
1 2 3 4 5 6
MM
Wiring diagram for drives
On-site junction boxes
Connection of automatic signalling device (sensor)
Connection of GU smoke detector RMD 3 / GU heat detector WMD 3
10 k
Smoke
detector Smoke detector
When connecting an automatic signalling device, the terminal resistor between terminal clamps
SI1 and SI2 must be removed and installed in the last automatic signalling device on the line!
When connecting a fire alarm system (FAS), the terminal resistor between terminal clamps SI1
and SI2 must be removed!
NOTE
10 k
Automatic signalling
device Automatic signalling device
Wiring diagram of smoke detector - general

18 EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
Connection to smoke switch control unit (BMZ)
1 2 3 4 5 6
Line termination module/
Interface module for FAS
Potential-free
contact from FAS
Connection of manual signalling device / RWA push-button HSE (RWA / Fire-Button)
!!
11 22 33 44 55 66 77 88
www.g-u.comwww.g-u.com
RERE
RARA
OKOK
1
2
3
4
8
3
7
2
1
5
4
5
7
8
11552266337 7 448 8
Remove the resistor
REin all HSE push-
buttons (apart from
the last HSE push-
button in the line)
The resistor REmust
not be removed
from the last
HSE push-button
in the line
Maximum of 10 RWA push-buttons
Wiring diagram for RWA push-button HSE
When connecting a manual signalling device, the terminal resistor between terminal
clamps 5 and 7 must be removed!
NOTE

19
!!
OK OK
1 12 23 34 45 56 67 78 89 910 1011 11
RERE
2
8
10
11
R
E
2
8
1
0
11
R
E
9
1
1
1
3
4
5
6
7
3
3
3
5
5
5
6
6
6
7
7
7
9
9
9
4
4
4
1 3 4 5 6 7 93 4 5 6 7 91
!
OK
NOT-
AUF
RD
YE
GN
!
OK
NOT-
AUF
RD
YE
GN
NOT-
AUF
ZU
RE
RA
NOT-
AUF
ZU
RE
RA
Remove the resistor
REin all HSE push-
buttons (apart from
the last HSE push-
button in the line)
The resistor REmust
not be removed
from the last
HSE push-button
in the line
Maximum of 10 RWA push-buttons
Wiring diagram of RWA push-button HSE - general
Connection of ventilation push-button (ventilation)
Connection of rain sensor / wind wheel
Ventilation
push-button
+
–
COM
NO
1
2
Wind wheel
(only RZ 50 / RZ 75)
Rain sensor
24 V, 300 mA

20 EN
RWA compact control unit
Installation and operating instructions
RZ 25 | RZ 50 | RZ 75
12.2015 | G31553 | Designed in Germany
Relay for status retransmission to external systems.
Alarm
Change-over contact, 3-pin
The relay switches if an RWA alarm is applied (with mains supply or emergency power supply).
The source of the alarm is the triggering of a manual or automatic signalling device.
Error
Change-over contact, 3-pin
The relay is enabled in the idle state (no error). If an error or power failure occurs, the relay drops
out.
Errors are all special statuses that are indicated by the LEDs and prevent manual interventions or
correct operation of the system.
Status Wiring connections
No alarm Terminals 42 and 62 are connected
Alarm Terminals 42 and 52 are connected
Status Status of relay Wiring connections
Idle state (no error) Relay is enabled Terminals 41 and 51 are connected
Fault Relay drops out Terminals 41 and 61 are connected
4.3.1 Retransmission of statuses
Retransmission of alarm / error - only RZ 50 / RZ 75
Connection of weather station
COM
NO
4.3.2 Networking of control units
In order to increase the power output or extend the ventilation lines, up to five RWA compact
control units of any type can be connected together.