mercor mcr EXi-F User manual

FIRE VENTILATION SYSTEMS DEPARTMENT
OPERATION AND
MAINTENANCE MANUAL
Hybrid smoke prevention
system for evacuation routes
mcr EXi-F
mcr EXI-F 23.07.28.1 version

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CONTENTS
1. INTRODUCTION INTO TRADING ........................................................................................................4
2. FOREWORD .....................................................................................................................................5
3OBJECT OF THE DOCUMENTATION ..................................................................................................5
4INTENDED PURPOSE OF THE DEVICE..............................................................................................5
4.1 Application ......................................................................................................................................5
4.2 System elements ............................................................................................................................5
4.3 System mode of operation ..............................................................................................................5
4.4 System selection principle ..............................................................................................................7
4.4.1. Requirements of the EN 12101-13 standard ......................................................................................8
4.4.2. Requirements in the Manual no. 378/2002 of the Construction Technology Institute.......................9
4.4.3. Requirements concerning the design of a fire ventilation system.................................................11
5. SYSTEM COMPONENTS..................................................................................................................12
5.1. Design of the mcr EXi-F air supply unit.........................................................................................12
5.1.1. Fan................................................................................................................................................16
5.1.2. Shut-off damper (non-insulated/insulated)...................................................................................17
5.1.3. Service disconnector.....................................................................................................................18
5.1.4. Vibration and noise dampening elements (optional)......................................................................18
5.1.5. Installation feet (optional) .............................................................................................................19
5.1.6. LAM louvered vents (optional) ......................................................................................................19
5.2. Explosion pressure relief panels (PL, PLD) and system permanent unsealing module (PRC)
(optional)................................................................................................................................................20
5.3. mcr OMEGA control panel .............................................................................................................23
5.3.1. Description and principle of operation ..........................................................................................23
5.3.2. Signaling .......................................................................................................................................25
5.3.3. Specifications................................................................................................................................25
5.3.4. mcr ICR pro positive pressure regulator.......................................................................................27
5.4. mcr ICS pro differential pressure transmitter...............................................................................28
5.5. mcr PSR / mcr PSRC manual control panel ..................................................................................30
5.6. mcr WPS elevated control panel ...................................................................................................31
5.7. Duct smoke detector .....................................................................................................................32
5.8. Intake vent switching system........................................................................................................33
5.9. mcr ICP lobby controller ...............................................................................................................34
5.10. mcr PP connection box .................................................................................................................37
5.11. Damper for lobby systems ............................................................................................................38
5.12. mcr HT anti-icing system ..............................................................................................................39
5.13. mcr SEP network separators........................................................................................................41
5.14. Temperature transmitter...............................................................................................................42
5.15. Magnetic sensors (reeds)..............................................................................................................43
5.16. Differential pressure switch..........................................................................................................43
6. ELECTRICAL CONNECTION............................................................................................................44
6.1. Electrical connections of devices to the mcr Omega panel ...........................................................62
6.1.1. EXI-F unit air supply fan................................................................................................................62
6.1.2. Service disconnector.....................................................................................................................63
6.1.3. Shut-off damper............................................................................................................................63
6.1.4. mcr PLD explosion pressure relief panels....................................................................................64

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6.1.5. mcr RPC system permanent unsealing module.............................................................................64
6.1.6. Connection of the mcr Omega control panel from FSS..................................................................65
6.1.7. Connection diagram for automation with backup fan ....................................................................66
6.1.8. Automation connection diagram for vertical fans..........................................................................67
6.1.9. Automation connection diagram for switching system / double intake vent..................................68
6.1.10. Automation connection diagram for lobby system ........................................................................68
6.1.11. mcr ICS pro differential pressure transmitter...............................................................................73
6.1.12. mcr PSR / mcr PSRC manual control panel ..................................................................................74
6.1.13. mcr WPS elevated control panel ...................................................................................................75
6.1.14. Duct smoke detector .....................................................................................................................75
6.1.15. mcr HT anti-icing system ..............................................................................................................76
6.1.16. Connection of mcr EXi-F actuators ...............................................................................................76
6.1.16.1. Actuators with return spring....................................................................................................76
6.1.16.2. Actuators without return spring ...........................................................................................77
6.1.16.3. High-speed actuators for the mcr ICP lobby regulator .........................................................77
7. PNEUMATIC CONNECTION.............................................................................................................77
7.1. Connection of a mcr ICS pro differential pressure transmitter .....................................................79
7.2. Connecting the mcr ICP lobby regulator........................................................................................80
8. MECHANICAL CONNECTION OF SYSTEM COMPONENTS................................................................81
8.1. mcr Monsun air supply units.........................................................................................................81
8.2. Control panel mcr Omega .............................................................................................................84
8.3. mcr ICS pro differential pressure transmitter...............................................................................84
8.4. mcr PSR / mcr PSRC manual control panel ..................................................................................85
8.5. Duct smoke detector .....................................................................................................................85
8.6. mcr ICP lobby regulator ................................................................................................................86
8.7. mcr PP connection box .................................................................................................................86
8.8. Magnetic sensors (reeds)..............................................................................................................87
8.9. Differential pressure switch..........................................................................................................88
9. ACTIVATION OF THE MCR EXI-F SYSTEM .......................................................................................88
9.1. mcr EXi-F application....................................................................................................................89
9.2. Commissioning, adjustments, measurements...............................................................................90
9.2.1. Guidelines .....................................................................................................................................90
9.2.2. Most common errors.....................................................................................................................92
10. SYSTEM ELEMENTS MARKING SCHEME........................................................................................96
11. TRANSPORT AND STORAGE CONDITIONS......................................................................................97
12. MAINTENANCE AND SERVICE .......................................................................................................98
13. WARRANTY AND GUARANTEE CONDITIONS ..................................................................................98
CAUTION:
•The Company reserves the right to introduce modifications and changes.
•As of the date of issue of the operation and maintenance documentation, the previous version are
invalidated.
•The operation and maintenance manual does not apply to devices manufactured prior to its issue date.

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1. INTRODUCTION INTO TRADING
The EXi-F hybrid smoke prevention system for evacuation routes has been introduced into trading
based on documents issued by the Instytut Techniki Budowlanej (Construction Technology Institute) and
a national declaration of performance:
1. National Technical Assessment ITB-KOT-2021/1788 issue 2
2. National Certificate of Constancy of Performance 020-UWB-2469/W
3. National Declaration of Performance HW/01/2021

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2. FOREWORD
The purpose of this operation and maintenance manual is to inform the user about the designated
use, design, mode of operation, correct installation and handling of the product.
The OMM also contains additional information about the conditions for use, maintenance and guarantee
conditions for the product.
Prior to starting installation and operation of the device, this OMM must be reviewed in detail. Failure
to follow the recommendations included in the documentation may lead to dangerous situations, damage
to property and/or injuries. The manufacturer shall not be responsible for damage resulting from use
that is inconsistent with this documentation.
3OBJECT OF THE DOCUMENTATION
This OMM relates to the entire group of devices constituting the mcr EXI-F hybrid smoke prevention
system for evacuation routes. Observing the recommendations included in the OMM shall ensure the
correct functioning of the device within the scope of fire protection for rooms and the safety of system
users.
4INTENDED PURPOSE OF THE DEVICE
4.1 Application
The mcr EXi-F system is used to protect any protected area (staircases, elevator shafts, lobbies,
evacuation corridors) against smoke by creating overpressure. The system is made up of appropriately
configured device sets that cooperate and prevent the penetration of smoke into the protected space by
creating higher overpressure. Depending on the individual needs, air supply to the protected space may
be ensured using a single-point or multi-point air supply. Device sets are appropriate for indoor and
outdoor operation, can operate in a vertical or horizontal fan operating position, depending on the ordered
version (installation on roofs, in walls etc.).
4.2 System elements
The mcr EXI-F system includes, but is not limited to elements such as:
•air supply unit(s) with additional equipment (dampers, intake vents, exhaust vents etc.),
•mcr Omega power supply and control panel,
•mcr ICR pressure regulator (mcr Omega panel component),
•mcr ICS and mcr ICP differential pressure transmitter(s).
Auxiliary system components may include:
•mcr PSR manual control panel
•U2 intake vent switching system,
•duct smoke detectors,
•WPS elevated control panel,
•mcr PL and mcr PLD explosion pressure relief panels,
•mcr RPC system permanent unsealing module.
4.3 System mode of operation
Operation of the mcr EXi-F system is controlled by the mcr Omega power supply and control panel.
The overpressure system is activated automatically by means of a signal from FSS. Once a signal
confirming that a fire was detected in the building is sent, the following activities are performed:
• opening dampers at air supply units,
• opening air exhaust elements for the usable floor space on the level affected by the fire,
• activation of air supply units,

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• opening the system permanent unsealing module (if included).
Several seconds after a fire is detected, the protected space is filled with air, creating a pressure
difference between this space and the adjacent rooms. The required amount of overpressure is
controlled by supplying a variable amount of air to the protected zone using one or more air supply units.
Figure 1mcr EXi-F system schematic diagram.
Where the door to the protected zone is closed, the fan, which is the main element of the air supply
unit, delivers the necessary stable air volume. Measurement and control of the current pressure value
in the protected space is ensured via one or more pressure transmitters. The overpressure created in
the protected space at the assumed level guarantees that the force necessary to open the evacuation
door does not exceed 100 N. Opening the door causes a pressure drop in the protected zone, which
increases the fan rpm (system response time below 3 seconds) and ensures the appropriate design air
flow value through the open door separating the protected zone from the adjacent space. In order for the
required air flow velocity through the open door to achieve the desired value, it is necessary to ensure
air relief into the surroundings, e.g. via one or a combination of the following solutions:
•an opening in the external wall (e.g. automatically opened windows – mcr OSO, grilles),
•air vent shaft equipped with fire dampers (e.g. mcr FID S,
mcr WIP PRO) at the outlet from each level,
CORRIDOR
VESTIBULE
STAIRCASE
ELEVATOR
air supply unit with damper and smoke detector
mcr RPC protected space unsealing module (optional)
mcr Omega control panel(s)
differential pressure transmitter
air relief
pressure measurement point located in the external area
pressure measurement point located in the usable floor space
PSR manual control panel
WPS elevated control panel
air flow direction
cabling

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•mechanical exhaust, properly designed and controlled, terminated with a smoke exhaust fan (e.g.
mcr Pasat or mcr Monsun).
A shut-off damper is one of the elements of an air supply unit. While the system is in standby, the
damper remains closed and prevents the staircase from seeping heat. The damper is opened in case of
a fire alarm. The air supply unit system may be additionally equipped with a duct smoke detector. Should
the detector identify smoke in the vented air, the fan is stopped and the damper is closed. When the air
inlet is located on the roof, according to the guidelines in the standard [1], two opposing intake vents
should be used, each equipped with a damper and smoke detector, unless the design stipulates
otherwise. Should the smoke detector identify that the air is contaminated with smoke, the intake vent
with smoke is shut off and the damper on the opposing air inlet is opened (U2 double intake vent system).
The throughput of the air supply unit that protects a particular space against smoke is determined by
the designer. When selecting the air supply unit for each certified overpressure system, check the
minimum unit throughput condition. This value determines the minimum required leakage in the
protected space to ensure that the system's proper operation conditions are met (maximum reaction
time to conditions changing during the evacuation). In protected sealed spaces that require high air
supply units throughput values (e.g. staircase with a small number of large doors), the leakage surface
may prove to be too small compared to what is required. In such a case the protected area should be
additionally "unsealed". The unsealing function may be provided by any opening in the external wall or
roof of the space protected against smoke. It is recommended for the unsealing opening to be closed
during normal use, to prevent the room from seeping heat, and it should only be opened as a result of a
fire alarm.
The following may be used as system unsealing modules in the mcr EXi-F system:
•roof exhaust vent with a multi-blade damper with an mcr RPC fire-rated actuator,
•mcr LAM louvered vent.
Where achieving the required operating parameters of the system is difficult, it is recommended to
use mcr PL, mcr PLD explosion pressure relief panels with the appropriate actuation threshold.
4.4 System selection principle
In Poland, the design of systems preventing smoke accumulation in vertical and horizontal evacuation
routes is based on the following:
•EN 12101-13 standard "Smoke and heat control systems. Part 13: Pressure differential systems
(PDS). Design and calculation methods, installation, acceptance testing, routine testing and
maintenance." [1]
•Manual no. 378/2002 of the Construction Technology Institute "Designing fire ventilation systems
for evacuation routes in high and high-raise buildings". [2]
The designer is also authorized to design based on his own technical expertise and in agreement with
an expert in the field of fire protection they can adopt individual design criteria for a particular building.
Irrespective of the technical assumptions made, each of the smoke control systems should ensure the
following:
•required overpressure,
•pre-determined minimum air flow velocity in open doors,
•maximum allowed evacuation door opening force.

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4.4.1. Requirements of the EN 12101-13 standard
The standard [1] sets apart two pressure differentiation system classes (Class 1 and Class 2) that
differ in terms of the design requirements and conditions. The following table presents the typical
applications of system classes based on building purpose.
Requirements for the individual types of buildings
System class Building type
1
•in buildings with automatic fast response water sprinkler extinguishing
systems with a response time index (RTI) ≤
50 that are triggered by
temperatures ≤72 °C or
•
in residential buildings below the limits for tall buildings (in accordance
with national requirements) or
•
in residential buildings with at least two areas without fire load
between the protected space and the potential fire source and equipped
with self-locking doors or
•if Class 1 was accepted by competent authorities
2
•
if the requirements for Class 1 are not adequate or not applicable or
•
in buildings without automatic fast response water sprinkler
extinguishing systems or
•if required by competent authorities.
Once the proper classification of the building has been determined, a system that would meet the
requirements for the particular class is to be designed. The following table presents the design criteria
for the individual system classes. These requirements are decisive for the air supply unit throughput.
Parameter
Class 1
Class 2
Door opening force
≤100 N
Pressure difference
≥30 Pa
Airflow velocity
≥1 m/s
≥2 m/s
Activation time
≤60 s
Operating time
≤120 s
Response time
≤5 s
The designed system should ensure a pressure difference of at least 30 Pa between the protected
space and unprotected space on the floor where a fire has appeared. This requirement must be met
when:
•all doors in the protected staircase along with the exit doors are closed and
•all doors to the elevator shaft with increased pressure, except for a single access door, are closed
and
•the air exhaust vent from the staircase space is open and operational.
Where the doors between the protected space are open, the pressure difference criterion is replaced
with air flow criteria, as per the table above. Where more than one door leads from a protected space to
an unprotected space, it should be noted that the PDS system will only work with one door fully open,
assuming, in the case of doors with different dimensions, that it would be the door with the largest
surface area. In the case of double-leaf doors it is assumed that the bigger leaf is open. The velocity
criterion should be met on the floor where the fire occurred.

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Air supply to the staircase should be distributed evenly over the entire height of the staircase via a
vertical shaft. Air supplies should be located at least on every third level, unless the design indicates that
a smaller number of supplies will ensure the required throughput. Air supplies should not be located
near doors and the air stream velocity should not exceed 5 m/s.
Overpressure in the fire elevator shaft cannot negatively impact its operation. Should smoke
penetrate into the common, unprotected hallway, the pressure difference between the staircase and
hallway and between the elevator shaft and hallway cannot force the smoke to flow into the staircase or
elevator shaft. The above condition may be fulfilled by means of:
•limiting the air supply velocity into the shaft up to a maximum of 3 m/s or
•placing the air inlet in the upper part of the shaft or
•placing the air inlet in the lower possible location.
4.4.2. Requirements in the Manual no. 378/2002 of the Construction
Technology Institute
The manual [2] mentions two systems for protecting evacuation routes, designated as solution A and
B. These solutions are based on protecting the staircase and smoke-stop lobbies against smoke and
ensuring smoke exhaust ventilation for the evacuation corridor.
The table below presents the design criteria for these systems.
Protecting a staircase from against accumulation of smoke
System class
Conditions
Solution A
The smoke prevention system is to ensure:
1. A pressure difference of 20 ÷ 80
Pa between the staircase and corridor,
assuming that:
- all
doors between the staircase with increased pressure and the lobbies are
closed,
- the exit door is closed.
2. Air velocity not less than 0.5 m/s:
-
through the open door of the staircase at the level where the fire occurred,
where the smoke-stop lobby door is also open,
-through the staircase exit door.
Solution B As above
Protecting a smoke-stop lobby against accumulation of smoke
System class
Conditions
Solution A
1. Air supply to the lobby with a throughput of ≥720 m3/h/m2 of the lobby.
2. Mechanical exhaust from the lobby with a throughput of ≤90% of the supply.
3.
Pressure differentiation in the lobby compared to the staircase and
evacuation corridor where the lobby door is closed.
Solution B
1. Air supply to the lobby with a throughput ensuring an air flow velocity
through the open lobby door between the lobby and the evacuation corridor
at a level of 1.0
m/s (accounting for air supply through the open door
between the staircase and lobby).
2.
Air flow from the lobby to the corridor via transfer dampers installed in the
wall between the lobby and the corridor.
3.
Air velocity in the open door between the lobby and the corridor at least
1 m/s while the door between the staircase and lobby is open.
4.
Pressure differentiation in the lobby compared to the staircase and
evacuation corridor where the lobby door is closed.

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Smoke ventilation of evacuation corridors
System class
Conditions
Solution A
1. Direct air supply to the corridor. Air velocity ≤5 m/s. Minimum supply
airflow 3600 m3/h.
2. Smoke extraction system throughput ≥130% of the supply throughput.
3.
Ensuring a distance between the smoke ventilation and air supply grilles
as per the ITB Manual.
Solution B
1. Indirect air supply from the lobby to the corridor via a transfer damper in
the wall between the lobby and corridor. Air velocity at the damper ≤5 m/s.
2. Smoke extraction system throughput ≥130% of the supply throughput.
3.
Ensuring a distance between the smoke ventilation and air supply grilles
as per the ITB Manual.
Protecting an evacuation lobby against accumulation of smoke
System class Conditions
Solution A
1. Mechanical exhaust system with a throughput of no less than 3600 m3/h
per each 100 m2 of the lobby surface area. In no case less than 5400 m3/h.
2. Air supply system depending on the lobby height:
a) h ≤5 m
- mechanical air supply,
- air supply throughput 30% less than the exhaust throughput.
b) H ≥5 m
- gravitational air supply,
- air supply openings size selected based on the flow, no more than 5
m/s at
the air supply grille.
Solution B As above
Protecting an elevator shaft against accumulation of smoke
System class Conditions
Solution A
Pressure difference between the
emergency services elevator shaft and the
usable floor space should be approximately 50 Pa.
Solution B
Figure 2Design requirements diagram for solutions A and B.
SOLUTION A
SOLUTION B
throughput
≥
130% of the
air supply
throughput
throughput
≥
130% of the
air supply
throughput
air velocity ≤ 5 m/s
throughput min.
3600 m3/h
air supply
≥
720 m3/h/m2 of
the lobby
staircase air
supply
staircase air
supply
STAIRCASE
STAIRCASE
LOBBY
LOBBY
CORRIDOR
CORRIDOR
air velocity
≤ 5 m/s
exhaust
≥ 90% of
supply
≥ 0.5 m/s
≥ 0.5 m/s
≥ 1.0 m/s