systemair DMV Domestic Fans Instruction Manual
- June 13, 2024
- systemair
Table of Contents
DMV HR
INSTALLATION
MANUAL
Read this manual carefully before using the product and keep it in a safe
place for reference.
This product was constructed up to standard and in compliance with regulations
relating to electrical equipment and must be installed by technically
qualified personnel.
The manufacturer assumes no responsibility for damage to persons or property
resulting from failure to observe the regulations contained in this booklet.
PRECAUTIONS FOR INSTALLATION, USE AND MAINTENANCE
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The device should not be used for applications other than those specified in this manual.
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After removing the product from its packaging, verify its condition. In case of doubt, contact a qualified technician. Do not leave packaging within the reach of small children or people with disabilities. Do not touch the appliance with wet or damp hands/feet.
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This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have beengiven supervision or instruction concerninguse of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision. -
Do not use the product in the presence of inflammable vapours, such as alcohol, insecticides, gasoline, etc.
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If any abnormalities in operation are detected, disconnect the device from the mains supply and contact a qualified technician immediately. Use original spare parts only for repairs.
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The electrical system to which the device is connected must comply with regulations.
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Before connecting the product to the power supply or the power outlet, ensure that:
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the data plate (voltage and frequency) correspond to those of the electrical mains
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the electrical power supply/socket is adequate for maximum device power. If not, contact a qualified technician.
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The device should not be used as an activator for water heaters, stoves, etc., nor should it discharge into hot air/fume vent ducts deriving from any type of combustion unit. It must expel air outside via its own special duct.
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Operating temperature: -20 C up to +50°C.
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The device is designed to extract clean air only, i.e. without grease, soot, chemical or corrosive agents, or flammable or explosive mixtures.
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Do not leave the device exposed to atmospheric agents (rain, sun, snow, etc.).
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Do not immerse the device or its parts in water or other liquids.
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Turn off the main switch whenever a malfunction is detected or when cleaning.
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For installation an omnipolar switch should be incorporated in the fixed wiring, in accordance with the wiring regulations, to provide a full disconnection under overvoltage category III conditions (contact opening distance equal to or greater than 3mm).
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If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
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Do not obstruct the fan or exhaust grille to ensure optimum air passage.
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Ensure adequate air return/discharge into/from the room in compliance with existing regulations in order to ensure proper device operation.
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If the environment in which the product is installed also houses a fuel-operating device (water heater, methane stove etc., that is not a “sealed chamber” type), it is essential to ensure adequate air intake, to ensure good combustion and proper equipment operation.
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Install the product so that the impeller is not accessible from the air outlet side as verified by contact with the Test Finger (test probe “B” of the norm EN61032) in compliance with the current safety regulations.
INTRODUCTION
DMV HR is a single alternate flow decentralized (single point) residential
heat recovery unit, also called «push&pull» unit, designed to ensure adequate
ventilation in enclosed environments without energy losses.
It is recommended that two units are installed in pair: when one unit is
pulling, the other is pushing. Pair of units can be installed in the same room
or in different rooms (i.e. livingroom and bedroom). The unit is suitable for
installation on an outside wall.
The unit should operate continuously, and only stopped for maintenance or
service. When heat exchange is not useful (for example in mid-seasons when
indoor and outdoor temperatures are similar), or when heat exchange is not
recommended (for example with the option “summer free cooling”), it is
recommended to set the unit in “extract-only” or “intake-only” mode and NOT to
switch it off.
TECHNICAL SPECIFICATIONS
- Inner ventilation unit material: high quality, impact and UV-resistant ABS colour RAL 9010.
- Design front cover removable for cleaning without the use of tools.
- Easy maintenance installation plate, for easy access to the heat exchanger from inside the room.
- Anti-dust filter, easily removable for washing by the user without tools.
- Regenerative honeycombs ceramic heat exchanger.
- External grille in high quality, impact and UV-resistant ABS colour RAL 9010.High efficiency aerodynamic fan with “winglet” blades to optimise quietness and efficiency.
- Single phase EC reversible Brushless motor with integral thermal protection.
- Motor mounted on high quality ball bearings.
- The unit is double insulated: no earth connection is required.
- Trickle speed selectable.
- Boost mode.
- Free-cooling (Bypass) mode.
- IPX4 degree of protection.
VERSIONS
STANDARD External grille in high quality, impact and UV-resistant ABS colour
RAL 9010.
OPERATION
In both versions, the unit pulls air out for 70 seconds, then it pushes air in
for the same time.
When heated air is pulled (extracted) from inside the room, it warms up the
heat exchanger; when the cold air is pushed (supplied) in the room, it gets
preheated, recovering most of thermal energy which would be otherwise lost in
the ventilation process.
The unit runs at the speed selected by activating the two-position switches
“S1”, “S2” and “S3” of the CTRL-S (accessory fig. 57). The same functionality
can be achieved with CTRL-S or with 3 two-position switches.
S3 switch activates the “Free cooling “ (Bypass) mode, which stops alternate
flow and keeps the fan in “extract-only” or “intake-only” mode, to avoid the
heat exchange when necessary. To set the extract-only” mode or “intake-only”,
place the integral jumpers as per fig. 20A-20B). The front cover LED indicates
when the Free cooling mode is on.
An automatic “Boost”mode can be achieved through a dedicated switch or room
sensors like SEN-HY, SEN-PIR or SEN-CO2, connecting such switch in parallel to
the S2 switch.
Wiring diagram of one unit: fig. 18A.
Wiring diagram with ambient sensors: fig.18B-18C.
Wiring diagram of two or more units: fig. 18D.
WARNING:
Ensure that the electric wiring to L and N is done correctly.
An incorrect connection will lead to malfunction or permanent damage of the
fan.
SYNCHRONISATION
When the units are installed in pair, they must be synchronised so that when
one unit is extracting, the other is supplying, and viceversa (fig. 18E-
18F18G).
This is achieved by setting the dedicated jumper (fig. 20A-20B).
RESET OF THE SYNCHRONISATION
OPTION 1: If two or more units are connected under the same main switch, to
reset the synchronisation, the main switch must be switched first OFF and then
ON to reactivate (fig. 31).
OPTION 2: If two or more units are not connected under the same main switch,
to reset the synchronisation, press at the same time the black pin of each
unit (fig. 33) for at least 3 seconds.
SYNCHRONISATION IN CASE OF INSTALLATION WITH CONTROLLER
If two or more units are controlled by means of the same controller (CTRL-S or
similar), they always operate in a synchronised way. Wiring diagram as per
fig. 18D.
JUMPER POSITION
Intergal jumper set in position A (fig. 20A) means “extract-only” mode.
Intergal jumper set in position B (fig. 20B) means “intake-only” mode.
The jumper position defines both the air-flow direction when the unit is
activated for the first time (for the synchronisation) and the air-flow
direction of the free-cooling mode.
MAINTENANCE AND SERVICE
Maintenance can be carried out by the user as indicated at page 21.Service
must be perfmormed only by technically qualified personnel in accordance with
local rules and regulations. Make sure that the mains supply
to the unit is disconnected (page 22).
Cleaning of the heat exchanger can be performed from outside as well.
DISPOSAL AND RECYCLING
Information on disposal of units at the end of life.
This product complies with EU Directive 2002/96/EC.
The symbol of the crossed-out dustbin indicates that this product must be
collected separately from other waste at the end of its life. The user
must, therefore, dispose of the product in question at suitable electronic and
electro-technical waste disposal collection centres, or else send
the product back to the retailer when purchasing a new, equivalent type
device.
Separate collection of decommissioned equipment for recycling, treatment and
environmentally compatible disposal helps to prevent negative
effects on the environment and on health and promotes the recycling of the
materials that make up the equipment.
Improper disposal of the product by the user may result in administrative
sanctions as provided by law.
DISPOSAL AND RECYCLING
Information on disposal of units at the end of life.
This product complies with EU Directive 2002/96/EC.
The symbol of the crossed-out dustbin indicates that this product must be
collected separately from other waste at the end of its life. The usermust,
therefore, dispose of the product in question at suitable electronic and
electro-technical waste disposal collection centres, or else sendthe product
back to the retailer when purchasing a new, equivalent type device.
Separate collection of decommissioned equipment for recycling, treatment and
environmentally compatible disposal helps to prevent negative
effects on the environment and on health and promotes the recycling of the
materials that make up the equipment.
Improper disposal of the product by the user may result in administrative
sanctions as provided by law.