SystemAir MRH 450, MRH 400, MRH Series, MRH 500, MRH 630 Installation And Operating Instructions Manual
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MRH
English Originalversion
Installation and Operating Instructions for
Previous issues: IMO_MRH_en_17_02_2017
Changes:
App. 4: wiring and explanation changed
Föregående version: -
Ранее инструкция: -
The data stated in these operating instructions are merely for the purpose of describing the product. Information
about a certain property or suitability for a certain purpose of use cannot be derived from our information. The information does not release the user from his own assessments and examinations.
Please consider the fact that our products are subject to a natural wear and ageing process.
All rights are with Systemair, also for the event of applications for protective rights.
Any powers of use, such as copying and forwarding rights, are with us.
An exemplary configuration has been shown on the title page. The product supplied can therefore deviate from the
illustration. The original operating instructions have been written in English language.
Contents
1 General information ................................... 4
1.1 List of information ........................................ 4
1.1.1 Specific safety symbols ................................. 4
1.1.2 List of instructions for action ........................ 5
1.2 Notes on the documentation ........................ 5
2 Important safety information ..................... 5
2.1 Safety notes .................................................. 5
2.2 Personnel ...................................................... 5
2.2.1 Mounting personnel ..................................... 5
2.2.2 Work on the electrical equipment ................ 6
2.2.3 Personnel for operation, use,
maintenance and cleaning ............................ 6
2.3 Intended use ................................................. 6
2.4 Improper use ................................................ 6
3 Warranty .................................................... 6
4 Transport, storage ...................................... 7
4.1 Transport ...................................................... 7
4.2 Storage .......................................................... 7
5 Description ................................................. 8
5.1 Technical data ............................................... 8
5.2 Dimensions ................................................... 8
8.2 Commissioning ............................................ 11
9 Operation ................................................. 12
9.1 Operation/use generally ............................. 12
9.2 Emergency use (use in case of fire) ............. 12
9.3 Dual use of hatch + fan (daily powered
ventilation + emergency use) ...................... 13
9.4 Dual use of hatch + fan (daily natural
ventilation + emergency use) ...................... 13
10 Maintenance/troubleshooting ................. 14
10.1 Malfunctions and troubleshooting
(generally) ................................................... 15
10.2 Cleaning ....................................................... 15
10.3 Maintenance, service .................................. 15
10.4 Spare parts .................................................. 16
11 Uninstalling/dismounting ......................... 17
12 Disposal .................................................... 17
12.1 Disposal of the fan ...................................... 17
12.2 Disposal of packaging .................................. 17
Appendix 1: Dimensions ...................................... 18
Appendix 2: Installation examples ...................... 19
6 Installation ................................................. 8
6.1 Safety information ........................................ 8
6.2 Preconditions for installation........................ 8
6.3 Installation .................................................... 8
7 Electrical connection .................................. 9
7.1 Residual current circuit breaker ................. 10
7.2 Connection of thermal protection .............. 10
8 Commissioning ......................................... 10
8.1 Preconditions .............................................. 10
Appendix 3: Wiring diagram, connection ............ 21
Appendix 4: Connection of actuator .................... 22
Appendix 5: Mechanical hazards, safety
warnings ............................................................. 23
Appendix 6: EC-Declaration of Conformity .......... 24
MRH 06.04.2017 3
DANGER
Direct danger
Failure to comply with this warning leads directly to death or to serious bodily harm.
WARNING
Possible danger
Failure to comply with this warning potentially leads to death or to serious bodily harm.
CAUTION
Hazard with a low risk
Failure to comply with this warning potentially leads to moderate injuries.
ATTENTION
Hazard with risk of property damage
Failure to comply with this warning leads to property damage.
NOTE
Useful information and notes
DANGER
Hazard from touching impeller, if not covered with protective grid!
This warning identifies situations with a danger for life from touching impeller. Failure to comply with this
warning leads to the risk of death or serious injuries.
DANGER
Hazard from crushing/shearing from closing hatch cover!
This warning identifies situations with a danger for life from closing the hatch cover. Failure to comply
with this warning leads to the risk of death or serious injuries.
WARNING
Hazard from electrical current!
This warning identifies situations with a danger for life from electrical current. Failure to comply with
this warning leads to the risk of death or serious injuries.
WARNING
Hazard from bursting parts!
This warning identifies situations with a danger from bursting parts. Failure to comply with this warning
potentially leads to the risk of serious injuries.
General information
1 General information
1.1 List of information
1.1.1 Specific safety symbols
4 MRH 06.04.2017
WARNING
Hazard from hot surface!
This warning identifies situations with a danger from overheating. Failure to comply with this warning potentially leads to property damage.
Instruction for action
Instruction for action with fixed order
Carry out this action.
Carry out this action.
(if applicable, further action)
Carry out this action.
(if applicable, further action)
WARNING
Hazard as a result of improper dealing with the device
These operating instructions describe safe use of the device.
Read the operating instructions carefully! The personnel dealing with the fan must read and under-
stand the operating instructions.
Keep the operating instructions with the device. They must be permanently available at the place of
use.
NOTE
We have carried out a risk assessment for the device. However, it can only apply to the device itself. After
installation of the device, we recommend to carry out a risk assessment for the whole system. In this way,
you have the guarantee that there is no risk potential from the system. Compliance with EMC Directive
2014/30/EC only relates to these products when they have been connected directly to the customary energy supply mains.
Important safety information
1.1.2 List of instructions for action
1.2 Notes on the documentation
2 Important safety information
2.1 Safety notes
Designers, installers and operators are responsible for the proper mounting and intended use.
Only use the device in a proper condition.
Provide generally prescribed electrical and mechanical protective devices.
During mounting, commissioning, maintenance and control, secure the place of mounting against unauthorised
access.
Observe rules for safe work. Protective working gloves, protective working shoes, safety goggles, safety helmet are
part of personal protective equipment. Depending on object, additional protective equipment may be necessary.
Safety components must not be by-passed or put out of function.
Keep all the warning signs and nameplates on the device complete and readable.
Regularly instruct the personnel about safety-conscious behaviour. Requirements for personnel – see 2.2. The ap-
pliance is not to be used by persons (including children) with reduced physical, sensory or mental capabilities.
2.2 Personnel
2.2.1 Mounting personnel
Mounting may only be carried out by trained, qualified personnel.
MRH 06.04.2017 5
Warranty
2.2.2 Work on the electrical equipment
Work on the electrical equipment of the fan may only be done by a qualified electrician or electro technically edu-
cated person. This person must know the relevant safety rules to recognise and avoid potentially risks.
2.2.3 Personnel for operation, use, maintenance and cleaning
Operation, use, maintenance and cleaning may only be carried out by trained and authorized personnel. The oper-
ating personnel must have appropriate knowledge about handling with the device. In the case of a malfunction or
an emergency, they must react correctly and adequately.
2.3 Intended use
MRH motorised roof hatch with service switches is intended for insertion of smoke and heat extract fan with motor
inside air stream (DVAX/F400, AXC(F), AXC(B)). In case of fire, it is used to extract smoke gases from the room. Ventilated areas and emergency exits contribute to easier evacuation of people and equipment in the event of fire, and to
faster and more efficient fire extinguishing; they protect the building structure and equipment against excessive temperatures and decrease fire escalation to the surrounding areas. In serially available version, the hatch is intended
for emergency use only (without EMC protection). Tested also to Re 10000 (cycles open - close), but for dual use additional safety elements are needed to reduce risk due to hatch closing (see 9.3, 9.4). For installation on the top of
buildings up to snow load SL 1000 (EN 12101-3) and wind load WL 1500 (EN 12101-2, 3).
The fans are suitable for extraction of clean air, air with a low dust and grease content.
The maximum permissible operating data on the name plate apply for an air density ρ = 1,2 kg/m³ (sea level) and a
maximum air moisture of 80 %.
Temperature of medium -20 up to 55°C, respectively according temperature/time class of the axial fan.
In case of fire, all motor protective devices of the fan must be bridged to guarantee functional capability (connec-
tion direct to mains). Specific instructions of the inserted axial fan should be observed.
2.4 Improper use
Above all, the improper use means using the fan in a way other than that described. The following points are improper
and hazardous:
- Use of a fan with improper identification (temperature/time class in case of smoke extraction);
- Not suitable to exhaust dust containing medium or medium with such dust concentration, that could
affect with dust deposits on operation and explosion protection (appropriate filtering necessary);
- Extraction of grease containing media;
- Exhaust from explosion hazardous zones;
- Exhaust aggressive atmosphere;
- Operation without duct system or protective guard (intake protection);
- Operation with the air connections closed or in instable area;
- Operation without effective thermal protection (PTC or other) (exception: fire mode). At AXC(F), AXC(B)
fans PTC is optionally built-in!
3 Warranty
Warranty for our products shall be determined according to the contractual agreements, our quotations and, as a supplement, our General terms and Conditions of Business. Warranty claims shall presuppose that the products are correctly connected, operated and used accordingly to data sheets, and regularly maintained.
6 MRH 06.04.2017
WARNING
Hazard of impact if the device falls down!
Load and unload the device carefully in order to avoid possible damage.
Pay attention to the weight and dimensions of the packaging. The weight of the device is visible from
the nameplate.
CAUTION
Danger from cutting edges!
Wear protective working gloves when unpacking.
WARNING
Electrical hazard from damaged connection cable or connections
Do not use the connection cable, service switch or impeller for transport or hoisting.
WARNING
Hazard of impact if the device falls down!
Transport the device carefully and with appropriate hoisting device!
Wear a safety helmet and safety goggles!
CAUTION
Hazard due to loss of function of the motor bearings!
Avoid storing for too long time (recommendation: max. 1 year).
Turn the impeller manually every three months, wear protective working gloves.
Before installation, check proper function of the motor bearings
Transport, storage
4 Transport, storage
4.1 Transport
Each device leaves our plant in an electrically and mechanically proper condition. The devices are delivered in wooden
crates or on pallets. We recommend transporting the fans to the installation site in original packaging.
Check the device for obvious defects, which can impair safe operation
.
First of all, pay attention for defects on the connection cable, service switch and impeller, cracks in the housing,
missing rivets, screws or covering caps.
Only put the device at unpacking on its base plate.
At manual transport observe allowed human lifting respectively carrying forces (see weight on the name plate).
Avoid impacts and distortion of the base plate and other parts of housing.
4.2 Storage
Store the device in the original packaging dustproof, dry and protected against weather.
Avoid effects of extreme heat or cold.
MRH 06.04.2017 7
MRH
Impeller diameter*
Max. fan casing length
~ Weight without fan
Size
mm
mm
kg
400 – 630
400 – 630
540
212
710 – 800
710 – 800
700
248
900 - 1000
900 - 1000
700
303
1120
1120
1000
362
* Impeller diameter corresponds to MRH size
WARNING
Hazard from falling parts!
Check the roof before installation for load capacity/strength.
When selecting the hoisting device and fitting material observe the weight, tendency to vibrations and
shear forces (weight information on the nameplate).
Description
5 Description
The casing is made as a double metal layer with mineral wool insulation. The hatch casing is made of pre-galvanised
steel while the hatch cover of AlMg3. Insulation thickness: walls 120 mm (k = 0,29 W/m2K), cover 150 mm. Directly
powered impeller from aluminium alloy is arranged with the motor inside the air flow. Impeller is fastened together
with hub and secured screw directly on to the motor shaft. Dynamically balanced to ISO 1940 T1, class G6,3. Electrically operated spindle actuator for cover opening.
5.1 Technical data
5.2 Dimensions
Please see Appendix 1 or www.systemair.com.
6 Installation
6.1 Safety information
6.2 Preconditions for installation
MRH must be installed on roofs.
They can be mounted on a flat or inclined roof on an appropriate roof frame (observe load capacity, stiffness, insu-
lation).
The sidebars are adjustable to roof pitch. Possibility to adjust depends on the height position of sidebars.
Installation on flat surface (e.g. concrete) or through the roof.
Extremely wind or turbulence exposed places should be avoided.
During installation the site must be protected from dust, moisture and weather influences.
6.3 Installation
Ensure secure access to the fan for maintenance and service.
Installation up to Appendix 2.
Fit the contact surface between MRH and the roof frame with a sealing tape (not provided with MRH).
Before and after mounting check manually if the impeller rotates smoothly. Install the fan only, if the minimum air
gap between rotor and nozzle matches the value from the fan`s test protocol.
MRH shall be fixed with bolts or studs to the roof frame through the sidebars and position secured with screws.
Avoid distortions of the casing at installation. Check the air gap impeller/housing after fixing the MRH, the mini-
mum air gap should remain over allowed minimum from the fan`s test protocol.
Ensure unobstructed and uniform intake into the fan as well as free outlet.
8 MRH 06.04.2017
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