TROX RM-0-M Duct Smoke Detector Instructions

TROX RM-0-M Duct Smoke Detector

General information

About this manual

• This operating and installation manual enables operating or service personnel to correctly install the TROX product described below and to use it safely and efficiently.
• This operating and installation manual is intended for use by fitting and installation companies, inhouse technicians, technical staff, instructed persons, and qualified electricians or air conditioning technicians.
• It is essential that these individuals read and fully understand this manual before starting any work.
• The basic prerequisite for safe working is to comply with the safety notes and all instructions in this manual.
• The local regulations for health and safety at work and general safety regulations also apply.
• This manual must be given to the system owner when handing over the system. The system owner must include the manual with the system documentation.
• The manual must be kept in a place that is accessible at all times.
• Illustrations in this manual are mainly for information and may differ from the actual design

Copyright

• This document, including all illustrations, is protected by copyright and pertains only to the corresponding product.
• Any use without our consent may be an infringement of copyright, and the violator will be held liable for any damage.
• This applies in particular to:
  • Publishing content
  • Copying content
  • Translating content
  • Micro copying content
  • Saving content to electronic systems and editing it

TROX Technical Support
To ensure that your request is processed as quickly as possible, please keep the following information ready:

• Product name
• TROX order number
• Delivery date
• Brief description of defect or issue
• Online
  • www.trox.de
• Phone
  • +49 2845 202-0

Limitation of liability

• The information in this manual has been compiled with reference to the applicable standards and guidelines, the state of the art, and our expertise and experience of many years.
  The manufacturer does not accept any liability for damages resulting from:

  • Non-compliance with this manual
  • Incorrect use
  • Operation or handling by untrained individuals
  • Unauthorized modifications
  • Technical changes
  • Use of non-approved replacement parts

• The actual scope of delivery may differ from the information in this manual for bespoke constructions, additional order options or as a result of recent technical changes.

• The obligations agreed in the order, the general terms and conditions, the manufacturer’s terms of delivery, and the legal regulations in effect at the time the contract is signed shall apply.

• We reserve the right to make technical changes

Warranty claims

• The provisions of the respective general delivery terms apply to warranty claims. For purchase orders placed with TROX GmbH, these are the regulations in section “Vl. Warranty claims” of the Delivery Terms of TROX GmbH, see www.trox.de/en/.
• Safety notes
  • Symbols are used in this manual to alert readers to areas of potential hazard. Signal words express the degree of the hazard. Comply with all safety instructions and proceed carefully to avoid accidents, injuries and damage to property.
• DANGER!
  • Imminently hazardous situation which, if not avoided, will result in death or serious injury.
• WARNING!
  • Potentially hazardous situation which, if not avoided, may result in death or serious injury
• CAUTION!
  • Potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
• NOTICE!
  • Potentially hazardous situation which, if not avoided, may result in property damage.
• ENVIRONMENT!
  • Environmental pollution hazard.
• Tips and recommendations
  • Useful tips and recommendations as well as information for efficient and fault-free operation

Safety notes as part of instructions

• Safety notes may refer to individual instructions. In this case, safety notes will be included in the instructions and hence facilitate following the instructions. The above listed signal words will be used.

Example:

1. Loosen the screw.

2. CAUTION!
   Danger of finger entrapment when closing the lid.
   Be careful when closing the lid.

3. Tighten the screw

Specific safety notes

• The following symbols are used in safety notes to alert you to specific hazards

Electrical voltage

•   DANGER!
  Danger of electric shock! Do not touch any live components! Electrical equipment carries a dan-gerous electrical voltage.

  • Only skilled qualified electricians are allowed to work on the electrical system.
  • Switch off the power supply before working on any electrical equipment.

• Correct use

  • The smoke detector is used for smoke detec-tion in ventilation and air-conditioning systems (AHU).
  • Fire dampers or smoke protection dampers can be triggered (closed) by the smoke detector.
  • The duct smoke detector can also be used to switch off the fan in a ventilation system.
  • The duct smoke detector can be used in  supply and extract air systems.
  • In public swimming pools, the use is only permitted in pure supply air ducts (without circulating air).
  • Use in extract air ducts for kitchens or laboratories must be checked on a case-by-case basis.
  • Operation is only permitted in accordance with the installation instructions and the technical data in these installation and operating instructions.
  • Modifying the duct smoke detector or using replacement parts that have not been approved by TROX is not permitted.
  • Only use TROX test gas for the function test.

• Incorrect use

  • WARNING!
  • Danger due to incorrect use!
    Misuse of the duct smoke detector can lead to dangerous situations.

• The duct smoke detector must not be used:

  • In areas with potentially explosive atmospheres (EX);
  • Outdoors without adequate protection against the effects of weather;
  • In areas with direct sunlight
  • In atmospheres where chemical reactions, whether planned or unplanned, may cause damage to the duct smoke detector or lead to corrosion

Safety

Qualified staff

• WARNING!
  • Danger of injury due to insufficiently qualified individuals!
  • Incorrect use may cause considerable injury or damage to property.
  • Only specialist personnel must carry out work.
• Personnel:
  • Skilled qualified electrician
  • Trained personnel

Qualified electrician

• The qualified electrician is a person who due to his professional training, knowledge, and experience, as well as knowledge of applicable standards and regulations, is capable of executing work on electrical equipment and is capable of autonomously recognizing and avoiding possible hazards.
  The qualified electrician is specially trained for the work environment where he is active and is familiar with the relevant standards and regulations.

Skilled qualified electrician

• Skilled qualified electricians are individuals who have sufficient professional or technical training, knowledge and actual experience to enable them to work on electrical systems, understand any potential hazards related to the work under consideration, and recognize and avoid any risks involved.

Trained personnel

• Trained personnel are individuals who have sufficient professional or technical training, knowledge and actual experience to enable them to carry out their assigned duties, understand any potential hazards related to the work under consideration, and recognize and avoid any risks involved.

• Safety signs
  The following symbols and information signs can be found on the product.

• WARNING!
  Danger due to illegible signage!

  • Over time, labels and signs can become dirty or otherwise unrecognizable, so that hazards cannot be recognized and necessary operating instructions cannot be followed. There is then a risk of injury.
  • Ensure that all of the safety, warning and operating information is clearly legible.
  • Replace illegible signs or labels immediately.

• Electrical voltage

Technical data Dimensions

Fig. 1: Dimensions and space required

1. for variant with air guide profile: H ≥ Air guide profile
2. Space requirement for connection lines
3. for variant with sensor head in duct, opening in air duct ∅100…105 mm
4. for variant with air guide profile, opening in air duct ∅40…45 mm

Duct smoke detector

3.6 W (at 24 V DC)
Power consumption with display or expansion module (nominal operation)| 6 VA (at 230 V AC); 4.8 W (at 24 V DC)
Current consumption without accessories (nominal operation)| 40 mA (at 230 V AC); 150 mA (at 24 V DC)
Current consumption with display or expansion module (nominal operation)| 50 mA (at 230 V AC); 200 mA (at 24 V DC)
Maximum connected load spring return actuator| 10 VA (230 V AC/ 24 V DC)
Internal fuse| 500 mA, slow-blow
Maximum connection diameter| 2.5 mm²
Relay contact FD Alarm (motherboard)| 230 V AC or 24 V DC; 8A
Relay contact Sys Fail (motherboard)| 24 V DC; 1A
Relay contact Alarm BMS (EM-RELAY)| 24 V DC; 1A
Relay contact Airflow (EM-RELAY)| 24 V DC; 1A
Relay contact Pollution (EM-RELAY)| 24 V DC; 1A
IP protection level| IP42
Protection class 230V AC / 24 V DC| II (protective insulation) / III (protective extra-low voltage)
Minimum length air guide profile| 90 mm (600 mm in scope of delivery)
permissible airflow velocity| 1.0…20 m/s
Alarm threshold for volume flow rate| 0.8 m/s
Alarm threshold for increased contamination| > 70%
Operating temperature| -10…65 °C
Relative humidity| 5 %…90 %, no condensation
Storage temperature| -20…70 °C
Weight| max. 1.1 kg (without air guide profile)
Dimensions| 340×144×80 mm (L×W×H)
---|---
EC conformity / approval|

• Construction Products Regulation (EU) no. 305/2011
• EN 54-27:2015 – Fire detection and fire alarm systems
• Smoke detectors for monitoring ventilation ducts
• General building inspectorate licence Z-78.X-XX
•  VdS approval number: G 22 30 17

Sensor head

Type plate

Fig. 2: Type plate (example)

1. Type
2. Manufacturer’s address
3. Specification of the supply voltage
4. Protection level
5. Power consumption
6. CE mark
7. Test/reset button Ä ‘Function test with test/ reset button’ on page 30
8. Order data
9. National conformity mark (Ü-Zecchin)
10. VdS approval number
11. QR code for downloading technical information

Transport and storage

• Delivery check

  • Check delivered items immediately after arrival for transport damage and completeness. In case of any damage or an incomplete shipment, contact the shipping company and your supplier immediately. Delivery depends on the options ordered according to the order key. The order key is listed in the shipping documents.

• Transport on site

  • If possible, transport the smoke detector in its packaging until it reaches the place of installation. Do not remove the packaging until immediately before installation

• General functional description

  • In order to prevent the spread of smoke in buildings through ventilation and air-conditioning systems, it is important to detect smoke at an early stage. The duct smoke detector
  • RM-O-M is used to control and trigger fire dampers or smoke protection dampers. The duct smoke detector operates on the principle of light scattering and detects the smoke regardless of its temperature, so that fire dampers close before their release temperature is reached. The fire dampers or smoke control dampers are closed in the event of interrupting the supply voltage to the spring return actuator (alarm relay R1).
  • The duct smoke detector can also be used to switch off the fan in a ventilation system. LED indicators can be used to display information such as smoke detection or the degree of soiling of the sensor head. With the optional expansion module EM-RELAY ,   Chapter 6.2.1.2 ‘EM-RELAY’ on page 29, the
    evaluated information can be forwarded to the center  building management system.

• EMRELAY

  •  Relay board for evaluation of alarm, contamination and airflow monitoring

• Storage
  For temporary storage please note:

  • Remove any plastic wrapping.
  • Protect the product from dust and contamination.
  • Store the product in a dry place and away from direct sunlight.
  • Do not expose the unit to the effects of weather (not even in its packaging).
  • Do not store the product below -20 °C or above 70 °C.

• Packaging
  Properly dispose of packaging material

Parts and function

• The descriptions for commissioning and configuration can be found in the corresponding commissioning and con-figuration descriptions.
• The duct smoke detector is supplied in two different versions:
  • RM-O-M with air guide profile Fig. 3
  • RM-O-M with sensor head in duct Fig. 4

RM-O-M with air guide profile Functional description

• With this variant, the air guide profile permanently directs air from the air duct into the sensor head, and back into the air duct. The sensor head is installed in the casing of the RM-O-M and is easily accessible via the inspection cover. For round air ducts, we recommend using the variant with air guide profile.

Fig. 3: RM-O-M with air guide profile

1. Inspection cover RM-O-M
2. Inspection window with LED display on page 15
3. Casing
4. Display module (optional)
5. Type plate
6. Test/reset button
7. Cable gland
8. Seal
9. Air guide profile
10. End cap

RM-O-M with sensor head in air duct Functional description
With this variant, the sensor head sits directly in the air duct. After removing the inspection cover, the sensor head can be easily removed from the air duct.

Fig. 4: RM-O-M with sensor head in air duct

1. Inspection cover RM-O-M
2. Inspection window with LED display  on page 15
3. Casing
4. Display module (optional)
5. Type plate
6. Test/reset button
7. Cable gland
8. Seal
9. Sensor head

Parts and function

Accessories

• Display module
  • On the optional display module, the operating and status messages are shown in detail by four col-oured LEDs and an alphanumeric 2-character dis-play. If the installation situation is difficult to reach, the display module can be fixed in an accessible place. For this purpose, the display module can be attached to magnetic surfaces or to the supplied mounting bracket. The scope of delivery includes, depending on the attachment variant, a 0.2 m or an 8 m cable, max. cable length 8 m; cable type: standard network cable e. g. SF-UTP.

Fig. 5: Display module

1. LED yellow – contamination >70%
2. LED blue – airflow monitoring
3. LED green – operation
4. Status indicator Ä on page 18
5. LED red – alarm
6. Test/reset button
7. Mounting bracket
8. Magnets
9. Connection socket for connection with smoke detector RM-O-M

Function of the LED indicators, on page 17

Operating status displays Mainboard / sensor head

1. only with activated airflow monitoring
2. triggered by smoke (event or maintenance)

Relay circuits

1. only with activated airflow monitoring
2. triggered by smoke (event or maintenance)

Display module (optional)

1. only with activated airflow monitoring
2. triggered by smoke (event or maintenance)
3. Blue LED lights up at air speed < 0.8 m/s
4. Measuring chamber – contamination in %

Status LEDs

Normal operation

| Measuring chamber – contamination in %
LO| LO only applies if airflow <0.8m/s
CH/88| Alarm position| Test function active (test mode)
PO| Measuring chamber – contamination with functional impairment
H0| Mainboard defective
H1| Motherboard and extension module not compatible
H2| No communication between mainboard and sensor head
H3| No communication between mainboard and extension module
H5| Supply voltage – overvoltage/under voltage total system
H6| Sensor head – wrong sensor head (no TROX sensor head)
H7| Sensor head – wrong sensor head
H8| Sensors head – hardware fault
F1| Smoke detection

 Installation

General notes on installation

Fig. 6: RM-O-M Installation positions in horizontal air ducts

1. RM-O-M
2. Horizontal air duct a
3. H Distance a = 1/3
4.  H Duct height

Fig. 7: Fixing holes

1. Fixing holes
   For mounting, there are 4 mounting holes on the smoke detector, dimensions: Chapter 2.1 ‘Dimensions’ on page 9. The RM-O-M may only be attached to the air duct at the specified mounting holes, using screws.

Note

• Recommendations for installation:
  • 1.5 × H minimum distance between duct smoke detector and any bends, control units etc.
  • Fit the duct smoke detector in the upper third of horizontal air ducts (not near a corner).

If structural reasons do not permit this, the duct smoke detector must be installed in such a way that safe smoke detection is nevertheless guar-anteed.

CAUTION!

• Malfunction of the duct smoke detector
• If the casing is damaged, the function of the duct smoke detector may be impaired.
• When carrying out assembly work, proceed care-fully and do not drill any additional holes in the casing.
• Do not use damaged units.

Prepare air guide profile for mounting

Fig. 8: Installation RM-O-M in horizontal air duct

1. Measure the width (B) or diameter (∅D) of the air duct.
   NOTICE!

   • Do not shorten the air guide profile on the side (red insertion marking) that is inserted into the recess on RM-O-M.
   • When shortening the air guide profile, a minimum length of 90 mm must be observed.

2. For B or ∅D < 600 mm: shorten air guide profile (Fig. 8) to ≈ B or ∅D – 10 mm. Fig. 9: Air direction arrow end cap

3. Fit the end cap (Fig. 8/2) on the shortened end of the air guide profile.
   NOTICE!

   • Proper function is not guaranteed without the end cap in place. Fig. 10: Insert air guide profile

4. Insert the air guide profile into the duct smoke detector up to the red insertion mark. Observe the direction of airflow on the end cap of the air guide profile Fig. 9.
   NOTICE!
   Malfunction due to improper installation
   For proper functioning, it is important that the air guide profile is inserted into the recess up to the red insertion mark (no gap between mark and recess). Fig. 11: Fixing the air guide profile

5. Fix the air guide profile to the smoke detector using the Phillips screw (3×10) sup-plied.

   • Screw in the Phillips screw vertically to the profile!
   • Screw in the screw hand-tight to the end position (bearing surface).\

Mounting on rectangular air duct RM-O-M with air guide profile

Fig. 12: Installation RM-O-M in horizontal air duct
Upon installation, make sure that the air guide pro-file is mounted in the upper third of the air duct, minimum length of the air guide profile is 90 mm.

1. Prepare air guide profile for assembly, ‘Prepare air guide profile for mounting’ on page 20.

2. Mark the intended position of the RM-O-M with the drilling template (packaging).

3. Drill a hole ∅ 40 mm at the intended position, e.g. using a step drill.
   DANGER!

   • Malfunction due to improper installation
   • The casing seals must seal tightly to the air duct. No ambient air may enter the casing.
   • The smoke detector RM-O-M with air guide profile must therefore not be installed in holes larger ∅ 45 mm.

4. Pre-drill the holes for the four screws.

5. Insert the air guide profile into the 40 mm hole.

6. Attach the smoke release device (Fig. 12/6) to the air duct with screws (Fig. 12/5).

7. After fastening the casing, check whether the adapter with air guide profile is moveable (can be removed and reinserted  8.2.3.1 ‘RM-O-M with air guide profile ’ on page 33).

8. Fit and fasten the inspection cover,  Chapter 8.2.1 ‘Open / close inspection cover’ on page 33.

RM-O-M with sensor head in air duct

Fig. 13: Installation RM-O-M in horizontal air duct
For installation, it must be ensured that the sensor head is mounted in the upper third of the air duct.

1. Open inspections cover, Fig. 22

2. Mark the intended position of the RM-O-M with the drilling template (packaging)  Chapter 5.1 ‘General notes on installation’ on page 19.
   NOTICE!
   The smoke detector may only be attached to the specified mounting holes.

3. Make a round hole ∅ 100….105 mm at the intended position.

4. Attach the smoke detector (Fig. 12/2) to the air duct with screws (Fig. 12/1).

5. Insert the sensor head into the smoke detector, Ä 8.2.3.2 ‘RM-O-M with sensor head in air duct’ on page 35. When inserting, the air direction must be observed.

6. Fit and fasten the inspection cover,  Chapter 8.2.1 ‘Open / close inspection cover’ on page 33.

Mounting on round air duct RM-O-M with air guide profile

Fig. 14: RM-O-M Installation in round air duct

• Upon installation, make sure that the air guide pro-file is mounted through the centre of the air duct, minimum length of air guide profile is 90 mm.
• For round air ducts, the smoke detector is fixed with a bracket (order code: RM-KIT/Console).

1. Prepare air guide profile for assembly,  ‘Prepare air guide profile for mounting’ on page 20.

2. Drill a hole ∅ 40 mm at the intended position, e.g. using a step drill.
   DANGER!
   

   • Malfunction of the smoke detector due to improper installation.
   • The casing seal must be tight to the air duct. No ambient air may enter the casing.
   • The smoke detector RM-O-M with air guide profile must not be installed in holes larger than ∅ 45 mm.

3. Fasten the mounting bracket (Fig. 14/1) to the air duct with 2 screws or rivets (Fig. 14/2).

4. Insert the smoke detector with air guide pro-file into the drilled hole.

5. Secure the smoke detector to the bracket (Fig. 14/1) with screws M5 x 12 (Fig. 14/3) and washers (Fig. 14/4).
   NOTICE!
   The smoke detector may only be attached to the specified mounting holes.

6. Fit and fasten the inspection cover Chapter 8.2.1 ‘Open / close inspection cover’ on page 33.

Electrical connection Opening the electrical operating area

DANGER!

• Danger of electric shock! Do not touch any live components! Electrical equipment carries a dangerous electrical voltage.
• Only skilled qualified electricians are allowed to work on the electrical system.
• Switch off the power supply before working on any electrical equipment.

Fig. 15: Opening the electrical operating area Personnel:

Skilled qualified electrician

1. Remove the display module, if provided (Fig. 15/3).
2. Loosen the bayonet screws (Fig. 15/2) and remove the inspection cover (Fig. 15/1).
3. Loosen the bayonet screws (Fig. 15/4) and remove the unit cover (Fig. 15/5).

Fig. 16: RM-O-M Connections Mainboard

1. Cable gland
2. Strain relief
3. Connection terminals
4. Dip switch airflow monitoring
5. Connection socket display module
6. Expansion module slot

Airflow monitoring

• S1 Off – Airflow monitoring switched on (default)
• S1 On – Airflow monitoring switched off S2 – not used

Supply voltage and wiring to the actuator

• Depending on the supply voltage and the design of the actuator, the wiring must be carried out according to the following connection diagrams. Taking into account the performance data Ä Chapter 2.2 ‘Duct smoke detector’ on page 10, parallel connection of several actuator is possible.

• Connect the unit to the supply voltage in such a way that an all-pole disconnection from the mains is possible at any time.

• Install the fuse protection of the supply line (building protection) according to the technical rules, based on the performance data and the selected cable cross-section, observe the maximum cable cross-section, Ä on page 10.

• The fire dampers or smoke protection damper can be equipped with an actuator for a supply voltage of 230 V AC or 24 V AC/DC. See the performance data on the rating plate.

• The connecting cables of the 24 V spring return actuators of fire dampers are fitted with plugs. For connection to the terminals, shorten the connecting cable.

• Insert connecting cables only at the cable bushings, maximum cable diameter 10 mm.

• Secure connection cables with strain relief.
  NOTICE!
  

• To avoid malfunctions due to short-circuits or wire breakage, separate cable routing or routing the cables in a protective tube or cable duct is required when using the output voltage GND / V+ (24 V) and using the display module.

Supply voltage 230 V AC, Spring return actuator 230 V AC

• With 230 V AC supply voltage of the RM-O-M, spring return actuators ① can also be connected using double connection terminals of the RM-O-M. The maximum power of the feeding power supply and the maximum switching capacity of 10 VA of the RM-O-M must be taken into account.
  Note: Wiring of end position detection to RM-O-M, only if RM-O-M has a communication board.

Electrical connection

Supply voltage 230 V AC, Spring return actuator 24 V DC

• With 230 V AC supply voltage of the RM-O-M, spring return actuators ① can be supplied with 24V DC by the power supply unit of the RM-O-M. The maximum permissible connection power load is 10 VA.

Supply voltage 24 V DC, Spring return actuator 24 V DC

• With 24 V DC supply voltage of the RM-O-M, spring return actuators ① can also be connected using double connection terminals of the RM-O-M. The maximum power of the feeding power supply and the maximum switching capacity of 10 VA of the RM-O-M must be taken into account.

Connect display module Personnel:

• Skilled qualified electrician
  • The display module can be connected with the net-work cable (approx. 0.2 m), included in the supply package. It is possible to extend the network cable up to a maximum of 8 metres.

1. Insert the connection cable through the cable gland into the casing and plug it into the socket (1).
2. Plug the connection cable into the socket on the display module (2).

Integration into the central building management system (BMS)
The following connections can be used for integration into the central building management system:

Fig. 17: Connection diagram

• R1 Alarm relay
• R2 Sys.Fail Relay (System Failure)

1. External test button
2. Control light switched off in case of system error
3. Control light switched on in case of system error

Function Test/Reset button ①

1.  Keystroke – Test
2.  Keystroke – End of Test

After a release, e.g. when using test gas, only one keystroke is required to reset.

Expansion modules

• The smoke detector can be equipped with expansion modules (EM) at the factory, or retrofitted. Depending on the required connection to higher-level systems, alternative expansion modules for different interface standards can be used on the slot:
• EMRELAY
  •  Relay board for evaluation of alarm, contamination and air-flow monitoring
• The descriptions for commissioning and configuring the communication modules can be found in the corresponding commissioning and con-figuration instructions for the above-mentioned modules. Relay board EM-Relay Ä Chapter 6.2.1.2 ‘EM-RELAY’ on page 29

Retrofitting expansion module Electrostatic sensitive component

• The packaging contains electrostatically sensitive components.
• Only allow packages to be opened by trained personnel. Establish potential equalization before opening.

Insert expansion module

Fig. 18: Insert expansion module Personnel:

• Qualified electrician

• DANGER!
  Danger of electric shock! Do not touch any live components! Electrical equipment carries a dangerous electrical voltage.

  • Only skilled qualified electricians are allowed to work on the electrical system.
  • Switch off the power supply before working on any electrical equipment.

• NOTICE!
  Destruction of the expansion module
  Do not touch the circuit board at the conductive tracks and, if possible, only touch the edge of the circuit board.

1. Plug the short side of the pin header (Fig. 18/2) into the socket (Fig. 18/3) on the mainboard.
2. Plug the expansion module (Fig. 18/1) onto the pin strip and press it firmly onto the four fastening points (Fig. 18/4).

Circuit board is mounted

EMRELAY

• Connection relay
  The expansion module has three potential-free changeover relays for evaluation or display in the central BMS

Fig. 19 : EMRELAY

1. Terminals Relay Alarm BMS
2. Connection terminals relay airflow monitoring; relay function only when airflow monitoring is switched on,
3. Connection terminals Relay Contamination Sensor head

Performance data

• maximum switching voltage
  • 24 V DC
• maximum switch rating
  • 1A

Commissioning / Function test / Reset

• Commissioning / Function test / Reset
  Commissioning
  A function test must be carried out for commissioning, then at least annually and after any modification, e.g. repair.

Recommended

• For commissioning, the function test must be car-ried out with test gas.
• For this purpose, we recommend spraying test gas directly into the ventilation duct to detect installation faults.
• Airflow monitoring
  • The smoke detector RM-O-M has airflow monitoring. Airflow monitoring is activated at the factory. It can be switched off via dip switches on the mainboard Ä Chapter 6 ‘Electrical connection’ on page 24.
• Functional test
  • Function test with test/reset button

Fig. 20 : Test/reset button

Starting a test run

1. Press briefly on the smoke detector or on the display module [Test/Reset] (Fig. 20/1).

   • The circuit to the release device of the fire damper or smoke detection damper is interrupted; the damper blade closes and remains in the CLOSED position. Test operation is signaled by LEDs on the motherboard and the display module.
     Exit test function and perform reset

2. Press again on the smoke detector or on the display module [Test/Reset].

   • The circuit to the release device of the fire damper or smoke detection damper is closed; the damper blade opens and remains in the OPEN position. The reset is signalled by LEDs on the motherboard and the display module.

Test/reset without function

• After changing the sensor head, the supply voltage must be disconnected for approx. 1 minute. Then carry out a function test with test gas!

Function test with test gas

• NOTICE!
  Malfunction due to the use of non-approved test gases To ensure the long-term function of the RM-O-M, only the TROX test gas RM-KIT / Tester may be used.

Fig. 21: Function test with test gas
For the function test, test gas is sprayed into the opening on the inspection cover. The function test can also be used in direct airflow.

1. Open the opening (Fig. 21/2) the inspection cover by pulling the rubber tab (Fig. 21/1) in the direction of the arrow.
2. Insert the spray tube (Fig. 21/3) into the opening in the inspection cover and bring it up to the sensor head.
3. Spray test gas into the sensor head.
   • Alternatively, the test gas can also be sprayed with the inspection cover removed, or in another opening of the air duct (in the direction of airflow in front of the RM-O-M).
   • If the response threshold value (fire characteristic smoke) is exceeded, the circuit to the release device of the fire or smoke damper is interrupted; the damper blade closes and remains in the CLOSED position. Smoke detection is signalled by LEDs on the mother-board and the display module.
4. Press [Test/Reset] (Fig. 20/1) on the smoke detector or the display module.
   • The circuit to the release device of the fire damper or smoke detection damper is closed; the damper blade opens and remains in the OPEN position. Normal operation is signalled by LEDs on the motherboard and the display module.

Reset
After a triggering, the smoke detector must be reset to restore the function.

• Press [Test/Reset] (Fig. 20/1) on the smoke detector or on the display module.
  • The circuit to the release device of the fire damper or smoke detection damper is closed; the damper blade opens and remains in the OPEN position. Normal operation is signalled by LEDs on the motherboard and the display module.

Maintenance

General information

• Regular care and maintenance ensure operational readiness, functional reliability and long service life of the duct smoke detector.
• Maintenance of the smoke detector is the responsibility of the owner or operator of the ventilation system. The system owner is responsible for creating a maintenance plan, for defining maintenance goals, and for the functional reliability of the equipment.

Functional test

• The owner or operator of the ventilation system must initiate the functional check of the smoke detector at least once a year.
• Before starting any work on the ventilation system, get the approval of the operator of the ventilation system.
• If, for operational reasons, even short-term shut-downs of the ventilation system are not permitted, these must be prevented by suitable measures, such as e.g. temporarily bridging the alarm contact.
• It must be ensured that all temporary contact bridges are removed and a functional test of the entire ventilation system is carried out at the end of the work.

Maintenance

• The sensor head must be replaced after 8 years at the latest (ÞDIN14675).
• All the other parts of the RM-O-M duct smoke detector are not subject to wear and tear, and hence maintenance-free. The smoke detector must be included in the regular cleaning of the ventilation system.

Cleaning

DANGER!

• Danger of electric shock! Do not touch any live components!
• Electrical equipment carries a dangerous electrical voltage.
  • Only the inspection cover may be opened for cleaning, the casing cover must not be opened.
  • Do not use any liquids near the duct smoke detector.

The outer casing of the smoke detector can be cleaned with a dry or damp cloth. Sticky dirt or contamination may be removed with a commercial, non- aggressive cleaning agent. Do not use abrasive cleaners or mechanical cleaning tools (e.g. brushes).
If the contamination is > 70% (yellow LED is illuminated) the sensor head should be cleaned.
Clean sensor head and inspection cover

• Remove sensor head, Chapter 8.2 ‘Repair work’ on page 33
• Cleaning the sensor head by blowing it out with oil- and water-free compressed air. If this measure is unsuccessful, the sensor head must be replaced.
• Removing contamination on the insect screen of the air inlet openings
• Install sensor head,  Chapter 8.2 ‘Repair work’ on page 33
• Clean the inside of the inspection cover and fit the cover.
• Carry out a functional test, Chapter 7.2 ‘Functional test’ on page 30

Repair
For safety reasons, repair work affecting fire protection must only be carried out by qualified personnel or the manufacturer. Only original spare parts may be used for repairs. A functional test is required after any repair, Ä Chapter 7.2 ‘Functional test’ on page 30.
Repair work

• Open / close inspection cover

Fig. 22: RM-O-M inspection cover

• To open the inspection cover (Fig. 22/1), turn the bayonet screws (Fig. 22/2) 90° anti-clockwise. Pull off the inspection cover towards the front.
  To close, put on the inspection cover and turn the bayonet screws 90° clockwise.

Check seal

Fig. 23: Check seal

1. Seal inspection cover
   For the function of the smoke detector, it is important that the inspection cover closes tightly.
   To check the function, check the sealing surfaces (Fig. 23) on the casing and on the cover for any damage.

Check/replace sensor head RM-O-M with air guide profile

Remove the sensor head and air guide profile

1. Open inspection cover,   on page 33.
2. Remove the sensor head by pulling it out of the holder by hand.
3. Carefully turn the holder anti-clockwise.
4. Pull out the holder.
5. Blow out the air guide profile with com-pressed air, clean the sensor head,.

Insert sensor head and air guide profile

1. Insert the adapter with air guide profile into the casing.

2. Fix the adapter by pressing it evenly and turning it clockwise.
   If the adapter cannot be fastened, loosen the 4 fastening screws of the casing slightly, insert the adapter and tighten the screws again.

3. Plug the sensor head onto the adapter.

4. Close inspection cover, on page 33.

5. Carry our functional test!

RM-O-M with sensor head in air duct Removing sensor head
As an alternative to the variant described here, the sensor head can be removed or replaced through an opening in the air duct.

1. Open inspection cover, Ä on page 33.

2. Pull the flat cable out of the socket.
   Turn the adapter slightly anti-clockwise by hand. Pull out adapter.

3. Loosen the sensor head counterclockwise and remove it.

4. Pull the flat cable out of the socket on the sensor head.

5. Clean sensor head, .

6. Insert sensor head, ‘Insert sensor head into RM-O-M’ on page 36.

Insert sensor head into RM-O-M

1. Check the NTC thermistors (1) for airflow monitoring, these must be in place as shown and must not be damaged.
2. Plug the flat cable into the sensor head.
3. Insert the sensor head into the adapter, observing the arrows.
4. Fix the sensor head by turning it clockwise.
5. Insert the adapter with the sensor head into the casing of the RM-O-M, observing the air direction arrow. Only insert the adapter in airflow direction, otherwise the airflow monitoring will not function properly. If the air direction is different, the adapter can be inserted into the casing rotated by 90°.
6. Fix the adapter by turning it clockwise, and plug in the flat cable on the motherboard.
7. Close inspection cover,    on page 33.
8. Carry out functional test!.

Accessories and spare parts

Accessories

with RJ45 connector
RM-KIT / DISP-S| Retrofit set DISP display module for RM-O-M + 0.2 m patch cable with RJ45 connector
RM-KIT / CONSOLE| Mounting bracket for round air duct
RM-KIT / FK-K90| Accessories powder-coated mounting plate for mounting RM-O-M on FK-K90 and FK-EU
RM-KIT / TESTER| Test gas, non-flammable, can with spray tube
RM-KIT / EM-RELAY| Expansion module EM-RELAY

Replacement parts

mounting plate lance
RM-KIT / DISP BRACKET| Replacement bracket for DISP-L display module

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