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					DanVex AD 180, 200
Dehumidifier




Operation
Technology           DanVex Oy
          Before commissioning/use of the equipment, these
            operating instructions must be read carefully!
These instructions are a part of the device and must thus always be
kept in the direct vicinity of the mounting site or on the device itself.
             Subject to changes, errors and typographical errors excepted.


                                  Dehumidifier

                             DanVex AD 180, AD
                                    200
Dehumidification
The interrelated processes that take place during dehumidification are based on physical laws.
These are to be illustrated here in simplified form in order to explain the principle of
dehumidification. The use of Dan Vex dehumidifiers
– No matter how well windows and doors are insulated, damp and moisture can penetrate even
through thick concrete walls.
– The water volumes required for binding concrete, mortar, plaster, etc. are diffused out initially
after 1-2 months under certain circumstances.
– Even moisture that has penetrated masonry following high water or flooding, is only released
very slowly.
– This applies similarly, e.g. also to moisture contained in deposited materials.
The moisture (water vapour) escaping from buildings or materials is absorbed by the ambient air.
This increases their moisture content and ultimately results in corrosion, mould, rot, peeling of
paint coatings and other unwanted moisture damage. The diagram opposite shows an example of
the rate of corrosion, e.g. for metal at different humidity levels.

This shows that the rate of corrosion below 50% relative
Humidity (R H) is insignificant and below 40% R H can be
disregarded. From 60% R H, the rate of corrosion
increases considerably. This moisture damage limit applies
also to numerous other materials, e.g. powders,
packaging, wood or electronic units.
Buildings can be dried out in different ways:

    1. By heating and air exchange: The room air is
heated to absorb moisture in order to then be
discharged to the atmosphere. The total input energy is
lost with the discharged, moist air.

   2. By dehumidification:
The moist air in an enclosed room is continuously
Dehumidified by the condensation principle.


In terms of energy consumption, dehumidification has one
Decisive advantage: Energy expenditure is restricted
solely to the existing room volume. The mechanical heat released through the dehumidification
process is returned to the room. With correct use, the dehumidifier only uses about 25% of
the energy that would be needed for the „heating and ventilation” principle.
The relative humidity
Our ambient air is a gas mixture and contains always a certain amount of water in the form of
water vapour. This water volume is expressed in g per kg dry air (absolute water content).
1m³ air weighs about 1,2 kg at 20 °C
Depending on the temperature, each kg of air is only able to absorb a certain amount of water
vapour. When this absorptive capacity is reached, reference is made to “saturated” air; this has a
relative humidity of (R H) 100%. Relative humidity is therefore understood to be the ratio
between the amount of water vapour currently contained in the air and the maximum water
vapour volume at the same temperature. The ability of air to absorb water vapour increases with
increasing temperature. This means that the maximum (= absolute) water content increases with
increasing temperature. Building material and structures can absorb considerable amounts of
water, e.g. bricks 90-190 l/m³, heavy concrete 140-190 l/m³, sand-lime bricks 180-270 l/m³. The
drying of moist materials, e.g. masonry, takes place as follows:
■ The contained moisture moves
from
within the material to its surface
■ Evaporation takes place on the
surface = change to water vapour
in the ambient air
■ The air enriched with water vapour
continuously circulates the
DanVex dehumidifier. It is dehumidified
and leaves the unitat a slightly higher temperature
to absorb water vapour from anew.
■ In this way, the moisture contained in the material is gradually reduced

The material dries!
The produced condensate is collected in the unit and discharged

        The condensation of water vapour

Since the maximum water vapour volume increases when the air is heated, the contained water
vapour volume remains the same however, this results in a reduction of the relative humidity. In
contrast, when the air is cooled, the capacity to absorb the maximum water vapour volume
reduces, the water vapour volume contained in the air remains the same and the relative humidity
increases. If the temperature falls further, the capacity to absorb the maximum water vapour
volume is reduced until it is equal to the contained water vapour volume. This temperature is
called the dewpoint temperature. When the air is cooled below the dew-point temperature, the
contained water vapour volume is larger than the maximum water vapour volume. Water vapour
is released. This condenses to water. The air is relieved of moisture. Examples of condensing are
misted windows in winter or misting of a cold drinks bottle.


                                            The higher the relative humidity,
                                            the higher the dew-point temperature,
                                            which is easier to fall below.
Installation
For economical and reliable unit operation, the following information must be followed in any
event:
■ The units must be installed stable and horizontal to ensure unhindered condensate discharge
■ The units must be installed in the centre of the room if possible, so that optimal air circulation
is ensured
■ It must be ensured that air is able to be sucked in freely at front of the unit and blown out freely
at the rear of the unit
■ A minimum distance of 50 cm to walls must be maintained
■ The units should not be installed in the immediate vicinity of radiators or other heat sources
■ Room air circulation can be improved by installing the units raised about 1 metre

■ The room to be dried or dehumidified must be closed with respect to the ambient atmosphere
■ Open windows, doors, etc. as well as frequent entering and leaving the room must be avoided
as far as possible
■ If the units are used in dust-laden environments or in stables, care and maintenance measures
specially adapted to the particular conditions must be taken
■ The unit capacity is solely dependent upon the spatial conditions, room temperature, relative
humidity and observance of the installation instructions




Electrical connection

■ The equipment is
operated at 230 V/50 Hz AC.


■ Electrical connection takes place
via a fitted mains cable with earthing pin plug.

NOTE
Electrical connection must take place to supply points with residual-current protective unit
according to
VDE 0100, part 704. For installation of the units in damp areas such as utility rooms, shower
rooms or similar, the units must be protected with a residual-current-operated circuit-breaker
complying
with the requirements.

■ Extension of the connecting cable may only take place by authorised electricians, taking into
account the cable length, unit installed load and local use.

CAUTION
All cable extensions may be used only when unrolle
Functions
The unit operates based on absorption principle.

The Fan inhausts the humid ambient air which goes via rotating rotor filled with the high-effective
silica gel on fiberglass carrier. The rotor design provides for two parallel air flows and maximum
contact with absorbent. The humid air flow goes via dry part of the rotor on which the moisture is
absorbed and the dehumidified air returns to the premises.
The regenerating air flow is intended to recover the absorbed moisture from the rotor for that the air
intake is made from outside the premises and then the air is heated before to go via rotor. Passing the
small rotor segment it absorbs the moisture and removes it back outside the premises. In course of
operation the rotor rotates continuously that provides the continuous automated process.




Lay-out
To obtain an optimal, cost-effective and safe operation of the unit the following instructions
should be followed:
◊ The unit may be installed both inside and outside the premises to be dehumidified.
◊ The unit must be mounted securely in vertical position by a wall through which the air ducts for
intake or exhaust of regenerating or treated air flows will be laid.
◊ Install the unit in the middle of the premises, if possible, to provide the optimum air
circulation.
◊ Fix the air ducts securely to the dehumidifier flanges.
◊ Provide the unhindered access to the unit control panel.
◊ The air must be inhausted and exhausted via the air ducts unconstrained.
◊ The unit may not be installed in close vicinity to the radiators and other heat sources.
◊ The premises in which the dehumidification and reduction of humidity are performed should be
closed so that the air from the surrounding premises and outdoors could not come inside.
◊ The windows and doors must be closed to prevent any free air exchange between the premises
and surrounding.




◊ In case the unit is to be operated in dusted surroundings then the appropriate measures for
maintenance and service are to be taken in accordance with the extreme operation conditions. See
Chapter «Maintenance and Service».


Essential information on electrical connections
◊ Wiring of the unit should be provided in accordance with DIN VDE 0100, Part 704 for electric
power supplies provided with static voltage circuit breakers.
◊ In case the unit is to be mounted at damp location, e.g. laundry, cellars, then the unit must be
provided with static voltage circuit breakers corresponding to the provision at the buyer’s cost.
Start-up
Before performing any start-up works or to meet the local requirements make sure that the air inlet
and exhaust openings are free of foreign matters, and the intake filters are clean. It is important that
the following instructions are observed:
◊ The extension wires should be thick enough.
◊ The extension wires are allowed to use if they are fully straightened and untwisted!
◊ It is not allowed to pull the unit by its cord.
◊ Having switched on the unit it operates in fully automatic mode.


Dehumidifier Design
AD 180, AD 200 Models




Regenerating flow inlet                                Regenerating air outlet




Dehumidified air inlet                                 Dry (dehumidified) air outlet
Control panel and LCD display:




Start-up and Operation
   1) To switch on/off the unit push the button ON/OFF.
   2) Select the operating parameter to be adjusted by pushing the button SET.
   3) To set up the required humidity push the button SET once (the humidity level indicator starts
      flashing), and then set the desired value by pushing the buttons +/- .
        The humidity can be set up within the range of 2% to 90%.
   4) To control the regenerating flow heating temperature push the button SET two times until the
      heating temperature indicator starts flashing and then set the desired value by pushing the
        buttons +/- .
   5) Indicators FAN, HEAT and ROTOR indicate the operation modes of the fan, heater and rotor of
      dehumidifier respectively.

     Please, note that having switched off the unit the fans continue operation for a while that is required for
     correct switching off the unit.
Maintenance and Service
It is important to carry out the maintenance on regular basis and follow some principles to provide the
long life and trouble-free operation of the unit.
Nevertheless, it is necessary to check out the unit not less than once per 6 months as well as fully clean
the unit after long period of standby.
All moving parts are provided with permanent lubrication not required often maintenance.

  Before performing any maintenance works, unplug the unit from the main power supply!
        Table of technical checkups:
   Dehumidifier components                                   Operations
                                            Every 3-6 months                    Every 12 months
Filters of treated and               Clean the filters, or replace the     Replace the filters
regenerating flows                   filters if cleaning is not possible
Fans of treated and                  Clean the fans and check for          Clean the fans, check the
regenerating flows                   damages                               electrical connections,
                                                                           lubricate the motor shaft.
                                                                           Check the impeller vanes for
                                                                           corrosion, replace if any.
                                                                           Check the air volume and
                                                                           adjust the fan shutter.
Motor and rotor drive                Check the drive belt for              Check the electrical
                                     damages and fatigues.                 connections for damages and
                                     Replace if necessary                  overheating.

Control panel and electrical         Check the electrical                  Check the electrical
connections                          connections for damages and           connections for damages and
                                     overheating.                          overheating.
PTC heater of regenerating           Clean the heater fins from dust.      Check the electrical
flow                                                                       connections for damages and
                                                                           overheating.
Rotor                                Clean the rotor from                  Clean the rotor from
                                     contamination and dust. Use a         contamination and dust. Use a
                                     vacuum-cleaner (do not use            vacuum-cleaner (do not use
                                     compressor).                          compressor).
Air duct flanges                     Check the seams for leakages.         Check the seams for leakages.

Control box                          Not required                          Check the temperature and
                                                                           humidity sensors for accuracy.
                                                                           Make calibration if necessary.


◊ Avoid any dust and other substance collection on the unit.
◊ Clean the unit with dry or slightly wetted cloth only.
        Cleaning the unit with direct water flow is forbidden.
◊ Do not use any abrasive or solvent-based cleaning agents; use the suitable cleaning agents only even
if the unit is highly contaminated.
◊ Check the air filter for contamination regularly.
         Clean and replace if necessary.
      Authorized persons are allowed only to perform any works related to the cooling system and electric system.


Troubleshooting
To provide the quality operation the unit was tested repeatedly in course of its manufacturing.
Nevertheless, in case of any problem use the following list.

The unit is not switched on:
◊ Check the power cable connection.
       230V / 1~ / 50 Hz
◊ Check the power cable plug for integrity.
◊ Check the settings of hygrostat.
       The relative humidity in the premises should be more than the selected level of humidity.


The unit starts up but no condensation is formed:
◊ Check the ambient temperature (the lower is the temperature, the lower is the unit capacity).
      Operating range of the unit – from -10 °C to 32 °C.
◊ Check the humidity.
      The minimum relative humidity - 2 %.
◊ Check the inlet air filter for contamination.
      Clean and replace if necessary.
◊ Check PTC heater fins for contamination.
      To make this checkout the unit should be opened; it is possible in an authorized service
      center only.
      The unit must be unplugged from the main power supply before performing any maintenance works!




In case all checkouts listed above were performed and the unit does not operate properly contact an
authorized service center.
      Authorized persons only are allowed to perform any works related to the cooling system and electric
      system.
Specifications
Model series                                   AD-180     AD-200
Operating range, temperature          °С       -18 - 45   -18 - 45
Operating range, humidity            % rh       2 - 100    2 - 100

Capacity 20 °С / 60% rel. humidity   L/day       12        16,8
Air capacity                         m3/hour     180       210
Electric power                         V        1-230     1~ 230
Frequency                             Hz         50         50
Power consumption, max.               kW          1         1,3
Length                                mm        250         250
Width                                 mm         224        224
Height                                mm         450        695
Packed weight                          kg        25          57

				
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posted:8/16/2011
language:English
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