MICROWELL DRY SIREN User Manual

SWIMMING POOL DEHUMIDIFIER DRY SIREN

SWIMMING POOL

DEHUMIDIFIER

User´s and installation manual

Version: 01/2018

Model: DRY SIREN mono

DRY SIREN due

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Thank you for purchasing Microwell swimming pool dehumidifier DRY
SIREN. You hold in your hands probably the most advanced and most
futuristic device for your pool. Before you use this device, it is necessary to
carefully read the entire User’s manual. Please keep the User’s manual
available in the case a reference is required in the future. Please provide
this information also to each user of the device. Please mind local
regulations in your country regarding installation and usage of this

dehumidifier which are valid in addition to this User’s manual.

1. CONTENT ................................................................................................................................................. 2

2. WASTE DISPOSAL INFORMATION............................................................................................................. 4

3. SAFETY MEASURES................................................................................................................................... 4

3.1 ELECTRICAL SAFETY ................................................................................................................................ 4

3.2 USAGE PRECAUTIONS ............................................................................................................................ 5

3.3 HANDLING PRECAUTIONS ...................................................................................................................... 6

4. PARTS LIST ............................................................................................................................................... 7

5. TOOL LIST ............................................................................................................................................... 10

6. INSTALLATION – CEILING UNIT ............................................................................................................... 12

6.1 BASIC MANIPULATION ......................................................................................................................... 12

6.2 APPROPRIATE POSITION OF CEILING UNIT ........................................................................................... 15

6.3 FIXATION ON A CEILING – CONCRETE / WOOD .................................................................................... 17

7. INSTALLATION – COMPRESSOR UNIT ..................................................................................................... 33

8. INSTALLATION – ELECTRICAL CONNECTION ........................................................................................... 34

9. DRAINAGE OF CONDENSATE WATER ..................................................................................................... 38

10. INSTALLATION – REFRIGERANT CONNECTION ........................................................................................ 40

10.1 DETERMINING THE PIPE LENGTH AND REFRIGERANT CHARGE. ............................................................................. 40

10.2 REFRIGERANT PIPING ................................................................................................................................. 41

10.3 FLARING WORK ........................................................................................................................................ 42

11. UNIT TEST – PAIRING ............................................................................................................................. 46

11.1 AFTER PAIRING, TEST RUN ................................................................................................................... 53

12. MOBILE APPLICATION - INSTRUCTIONS FOR USE.................................................................................. 54

12.1 CONTROL ................................................................................................................................................ 54

13. TECHNICAL DATA .................................................................................................................................. 58

13.1 TECHNICAL DATA TABLE ............................................................................................................................. 58

13.2 EXTRACTION RATE DIAGRAM ....................................................................................................................... 59

13.3 WIRING DIAGRAM .................................................................................................................................... 59

14. HINTS & TIPS .......................................................................................................................................... 60

14.1 ERROR MESSAGES ..................................................................................................................................... 60

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14.2 TROUBLESHOOTING – SAVE TIME AND MONEY ................................................................................................ 60

14.3 MAINTENANCE ......................................................................................................................................... 63

14.4 SUMMER SHUT-DOWN............................................................................................................................... 63

14.5 SUPER-CHLORINATION CLEANING ................................................................................................................. 63

14.6 START-UP DURING CONSTRUCTION ............................................................................................................... 64

14.7 MICROLIGHT+ ........................................................................................................................................ 64

15. WARRANTY ............................................................................................................................................ 64

15.1 INSTALLATION CHECK-LIST AND WARRANTY CARD ............................................................................. 66

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When using this dehumidifier in the European countries, the following information must be
followed:
DISPOSAL: Do not dispose this product as unsorted municipal waste. It is prohibited to
dispose this dehumidifier in domestic / household waste. It is prohibited to dispose this
appliance into forests or natural landscape. This could lead into local soil pollution.
Collection of such waste must be treated individually.

DISPOSAL POSSIBILITIES:

1. The municipality has established a collection system where electronic waste can be

disposed.

2. When buying a new product, the retailer or the manufacturer may take back the old

appliance free of charge.

3. As old appliance may contain valuable resources which could be sold to scrap material

dealers.

4. Disposal of packaging materials such as carton box or plastic / bubble foil can be recycled.

This device is primarily designed for use in indoor swimming pool, sauna or spa. Alternative use is in
laundries, drying rooms or other humid areas requiring dehumidification.

Model Microwell DRY SIREN is designed for halls with swimming pool surface of up to 60m

2

.

It is necessary to follow instructions in this User’s manual and local regulations in your country that
regulate the installation and usage of this device. Incorrect, improper or operations contradictory to
this User’s manual may lead to an injury or property damage and will lead to loss of warranty. To
prevent injury or property damage the following instructions must be followed:

3.1 ELECTRICAL SAFETY

 The device operates at dangerous electrical current.
 Only authorized person with particular electro-technical qualification can manipulate with unit.
 Danger of electrical shock.

For proper and optimal operations of the device is it necessary to maintain the air
temperature in the swimming pool room / hall 2-3°C higher than actual water temperature
in the pool. It is also necessary to keep the air temperature in the swimming pool room / hall
in operational temperature range of the dehumidifier (specified in Technical data section).
Higher temperatures than operational temperature range may cause damage to the unit
resulting from overheating of the unit.

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 Do not exceed the required power supply.
 Do not turn the device on that shows signs of possible damage such as broken packaging, broken or

otherwise damaged unit’s chassis or cover, smoke, smell, etc.

 It is necessary to use appropriate Residual current circuit breaker (RCD) for connection of the dehumidifier to

main power supply.

 Do not manipulate with the device with wet hands.
 Do not clean the device with water.
 Before cleaning the device, switch off the circuit breaker of the unit’s power supply.
 Installation, service or repair must be performed by qualified technician.
 When the device is not intended to be used for a longer time, we recommend switching the circuit breaker of

the unit’s power supply off.

 Compressor unit must be installed in vertical position. Ceiling unit must be leveled to avoid condensate

water to enter electrical part of the unit.

 It is forbidden to install the unit close to devices that may cause electrical or frequency disturbance such as

welding machines, motors or rotors, WIFI/WLAN routers or repeaters.

 It is forbidden to alter electrical installation of the device. It is also forbidden to alter any other part or

functionality of the device.

3.2 USAGE PRECAUTIONS

 Please read the entire User’s and Installation Manual prior you proceed with installation or usage of this

product. Do not continue or proceed if you have doubts, uncertainty or not full clarity about any step(s)
described in this User’s and Installation Manual.

 Do not cover or block the intake or exhaust openings. It is forbidden to block or cover the intake or exhaust

openings with clothes, towels, buckets, canoes, ceiling beams, etc.

 Do not install or place any heating appliances close to intake grilles / louvers. It could continually

overheat the dehumidifier and result in its malfunction or damage.

 Do not climb up on or sit on the unit.
 Do not place any objects on the top of the unit (e.g. boxes, flower vases, etc.).
 Do not hang any objects on the unit.
 Do not spray any flammable substances into the equipment; this might lead to fire.
 Do not clean the equipment with aggressive cleaning agents, this might lead to damage or deformations.
 When cleaning plastic parts do not use any cleaning agents unsuitable for the cover of the dehumidifier

(household cleaning agents, solvents, bleaching agents, benzene, diluents, rough cleaning powder, cresol,
chemical agents). Instead, sweep the dehumidifier cover with a soft cloth or a sponge.

 Never throw or insert any objects into any hose or opening.
 The cover of ceiling unit is made from acryl. The cover of compressor unit is made from powder coated

metal. Do not manipulate with lighted cigarette, cigarette ashes, or any other kind of fire in vicinity to this part.

 Use this device exclusively for the intended purpose, as described in the attached instruction manual. Do not

use parts which are not recommended.

 Do not drink or use the condensate water drained from the unit. Do not return the water back to the

swimming pool. The water may be contaminated with bacteria.

 Children are not allowed to operate, touch or play with the unit.
 Children are not allowed to manipulate with packaging, plastic / bubble foil. Risk of suffocation!
 Prevent the children from injury or harm caused by any manipulation with the unit, its parts or its

packaging. Small parts like screws may be swallowed and cause suffocation or harm to health.

 Do not leave the children in the swimming pool hall unattended.

 The dehumidifier should be sized correctly and run max. 18 hours a day, optimum max. 12 hours a day. In

the case it runs more than 18 hours a day in long term it may fail, malfunction or get damaged. Warranty does
not cover such damages as the machine is considered undersized if running longer than 18 hours a day.

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3.3 HANDLING PRECAUTIONS

 Leave the compressor unit in vertical upright position for at least 2 hours before the installation. This will

level the oil inside the compressor.

 Transport of the compressor unit in lying position or turning the compressor unit over may harm the

compressor and will lead to loss of warranty.

 The device must be handled with care and special attention avoiding any mechanical damage.
 It is forbidden to apply any improper mechanical force onto the unit. This may cause mechanical damage to

the device.

 It is forbidden to let the device fall freely onto the ground or any solid surface resulting in hard impact.
 Please notify your reseller or distributor if you suspect that the unit was delivered damaged. Unit may seem

to work well at start but small damage can make the unit go out-of-order in short time. In such case the unit
must be inspected and approved for further use by your reseller.

 Please notify your reseller or distributor if directly after installation you suspect that unit is not working in

perfect order.

 In the case of device failure resulting from improper handling or mechanical damage (impact, hit, fall, etc.),

the manufacturer reserves the right to evaluate the continuity of warranty.

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4. PARTS LIST

The unit was delivered in 2 boxes on a wooden palette(s). After you unpack the boxes, please check
the content. It should include the following:

Name/Code

Picture

Name/Code

Picture

1 - Ceiling unit

1x

2 - Compressor unit

1x

3 - Tablet with
charger

1x

4 - User’s Manual

1x
5 - F8 fastener

4x

6 - ML1 D8 fixation
double nut

4x

7 - MX8 hex nut

d8

8x

12x if installation
on wooden beam

8 - TR8 threaded bar

M8x1000mm

2x

9 - MB8 flat washer

8x

12x if installation on
wooden beam,
additional washers
may be supplied MX10

10 - Scheme diagram

1x

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11 - Eight core
cable with
markings 123456
(mono), 12346
(due)

1x

12 - Three core cable
with markings
L1,N1,Earth

1x

13 - Back lift
assembly (1) with
anchor

1x

14 - Condensate drain
for compressor unit

1x

15 - Rope

14.5m

1x

16 - Front lift
assembly with
locking mechanism
(2) with anchor

1x

17 - Wall console
for compressor
unit

1 set

(on demand)

18 - Key set for
compressor unit

2x

19 – Bluetooth
receiver cable

(only DRY SIREN
due)

-

-

The pictures and drawings in Parts list may differ from those actually delivered. Some
parts may have been delivered upper hand and are thus not included in this shipment.
If you are unable to locate all parts or are unsure if the supplied parts are complete,
please contact your distributor.

Please note that the screws and dowels supplied with this dehumidifier are to be
used only with solid concrete. Please check your ceiling material and choose
appropriate screw and dowel.

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CEILING UNIT

1. Main cover

2. Air intake

3. Air outake

4. LED lamp + microLIGHT+

5. Bluetooth speaker

6. Auto dimmable light sensor, LED pairing indicator

7. Refrigerant connection Suction (1)

8. Refrigerant connection Discharge (2)

9. Electrical connection – L1, N1, Earth, 12346

10. Lifting mechanism

11. Fixation hooks and Fixation ropes

12. Condensate drain

13. Serial number plate

COMPRESSOR UNIT

1. Main cover

2. Door

3. Lock + keys

4. Condensate drain

5. Silent blocks

6. Refrigerant connection Suction (1)

7. Refrigerant connection Discharge (2)

8. Communication cable to ceiling unit – 12346

9. Refrigerant plate

10. Serial number plate

11. Main power supply – L, N, Earth

12. Ceiling unit power supply – L1, N1, Earth

13. Serial RS port

14. Pairing button

15. Terminal connection for main power supply (L, N, Earth) and

ceiling unit power supply (L1, N1, Earth)

1 2 3 4 5 6 7 8 9

10

11

12

13

11 1 2 3 4 5 6 7 8

11

12 9 10

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16. Terminal for connection of communication cable –

123456

17. Compressor

18. Main PCB

5. TOOL LIST

In order to perform the installation correctly, you will need following tools:

Name/Code

Picture

Name/Code

Picture

19 - Drill

1x

20 - Drill bit 10mm

1x

If installation on a
wooden beam:

9mm and 11mm drill bit

8

11

12

15

18

16

17

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21 - Screwdriver
Phillips PH2

1x

22 - Screwdriver Slot
5/32

1x

23 - Small hammer

1x

24 - Tape measure

1x

25 - Spirit level

1x

26 - Combination wrench
/ open-end wrench ­2x13mm, 1x16mm,
1x17mm, 1x19mm,
1x22mm, 1x24mm or
adjustable

multiple

27 - Charging and
testing hoses with
valve, ½“ – 20UNF

2x

28 - Vacuum Pump
170l/min

1x

29 - Charging scales

+/-2g

1x

30 - Manifold valve
R410A

31 - R410A Bottle

1x

32 - Flaring tool – tube
1/2, 3/8

1x

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33 - Cutter – tube
1/2, 3/8

1x

34 - Tube Bender – tube
1/2, 3/8

35 – Saw for iron

1x

6. INSTALLATION – CEILING UNIT

Ceiling unit is designed for an installation at the ceiling or at lower ceiling. Typically the ceiling unit is
fixed into the concreted structure of the upper floor or wooden roof. Please make sure that the
material into which the ceiling unit is to be fixed is suitable for such installation. Manufacturer is not
responsible for damages or losses caused by an incorrect installation or inappropriate concrete or
wood type. Ideally it should be installed above the evaporation source. It should be installed on easy
accessible spot to allow maintenance and service.
Please view following concrete types and strengths.

Pressure class

f

ck,cyl

(MPa)

f

ck,cube

(MPa)

Appropriate

Threaded
bar TR8 L1
drill depth

Anchor for
lifting
mechanism

C8/10

8

10

No

N/A

N/A

C12/15

12

15

No

N/A

N/A

C16/20

16

20

Yes

80mm

60mm

C20/25

20

25

Yes

60mm

60mm

C25/30 and more

25 and more

30 and more

Yes

40mm

60mm

Concrete marking with additional request for seepage resistance: STN EN 206-1 –C25/30-XF2,XC2
(SK) – Cl 0,4 – Dmax 16 – S3, seepage 50mm according to STN EN 12390-8.

6.1 BASIC MANIPULATION

The unit is designed to be located on the ceiling. We, at Microwell, had to ensure a perfect balance
between weight and long-term durability with focus on reliability of the product. It is thus necessary
to mind below manipulation information and comply with them. Non-compliance may lead to
product damage, malfunction or failure. Manufacturer is not resosonsible for incorrect manipulation
or for manipulation not compliant to this User’s manual.

Ceiling unit is delivered in a box with polystyrene support from the bottom at sides.

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Do not place ceiling unit on side. The unit is not designed to stand on its side. Main cover damage
may occur in such position.

Do not place ceiling unit on the ground. Do not put the unit on an object or support holding the unit
in the center.

Do not place any objects such as drill tools, boxes, vacuum cleaners, etc. on the top of the ceiling
unit.

Do not hold ceiling in areas where forbidden (bluetooth speaker, LED lamp, air outlet). For
manipulation hold the unit on the side which is supported by metal structure. Do not hold in places
where plastic cover does not have metal support.

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DO NOT INSTALL THE CEILING UNIT IN BETWEEN THE WOODEN BEAMS OR SIMILAR
OBJECTS. Air flow on the outlet will be reflected from the object (wooden beam) and

redirected back to the unit. Thus the water collection process will be dramatically
reduced and the unit will be exposed to the risk of overheat.

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6.2 APPROPRIATE POSITION OF CEILING UNIT

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Please mind electrical safety requirement below to locate an electrical device close to pool water.

ZONE 1, IPX4

ZONE 2, IPX2

OUTSIDE THE ZONES

In the distance of 1250 mm or less
from the swimming pool edge, the
bottom edge of the unit must be in

the height of 2500 mm from the
swimming pool surface; if it is
embedded under the floor, then
2500 mm from the floor.

At least 1250 mm (i.e. out of the reach of the hand) from the lateral edge
of the wash basin, in the minimum height of 1200 mm above ground. It
cannot be placed above the wash basin.

In the distance of at least 1500 mm
from the vertical plane a roun d th e
jumping platforms, diving boards

and 2500 mm above the highest
surface, where persons are likely to
stay.

If the unit is in the distance of less
or equal to 1250 mm horizontally
from the edge of the swimming

pool, then it must be raised up to
the height of 2500 mm from the
swimming pool surface; if the
pool is embedded under the floor,

then the unit must be raised up to
the height of 2500 mm from the
floor.

SWIMMING POOL

SWIMMING POOL

Swimming pools which are not

cleaned by jet water

in the distance of 1250 to 2000 mm from the swimming pool edge,

the unit must adhere to the standard and in the height

of at least 300 mm from the floor

HD, IEC

Swimming pools which

are not cleaned by jet water

In the distance of 2000 to 3500 mm
from the swimming pool edge, the

unit must adhere to the HD, IEC
standard and a minimum 150 mm
elevation above th e groun d is

required for su fficient air flow.
Installing the unit on the floor is
prohibited.

At least 1250 mm (i.e. out of the reach of the hand)
from the lateral edge of the shower cabinet. It cannot
be placed above the shower cabinet.

OUTSIDE THE ZONES

OUTSIDE THE ZONES

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6.3 FIXATION ON A CEILING – CONCRETE / WOOD

1. Locate appropriate

location for the ceiling unit.

2. Mark the drilling holes according to Scheme

diagram (Part number 10). Position the drill hole for
lifting mechanism 800mm from the center in
between the 2 threaded bars (TR8 – part number 8)

800mm

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3a. Drill 6 holes (4 for TR8, 2 for Lifting mechanism).

/We advise to use vacuum cleaner simultaneously
when drilling to avoid dust and particles be spread
into entire room./

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CONCRETE

3b. Drill 4 holes (TR8) using 10mm bit by

concrete and 9mm bit by wood beam. Drill
2 holes (Lifting mechanism – Part number
13 and 16). Please refer to needed drilling
depth – section 6 INSTALLATION – CEILING
UNIT – table Concrete types and strength.
For wood we advise to drill completely
through. Please mind that wooden beam
must be statically resistant to hold weight
of DRY SIREN unit (53kg) and it must be
possible to drill 9mm hole through it
without changing the static conditions of
the wooden beam

4. By concrete insert 4 fasteners into the

holes for threaded bars. Fastener is part
number 5. Use small hammer or
appropriate.

5. Assemble 4 mounting threaded bars for ceiling unit

fixation. Use part numbers 5, 6, 7, 8, and 9. Please refer
to picture below.

MX

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WOOD

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6. Please refer to picture below in order to fix the final length of

threaded bars.

CONCRETE

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WOOD

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Example:

LTR= L1+L

2

L1 = depth in concrete of TR8 – please refer to section 6 INSTALLATION – CEILING UNIT or
height of the wooden beam
LC = depth in concrete of lifting mechanism – please refer to section 6 INSTALLATION –
CEILING UNIT
L2 =L – 55mm
L3= distance above wooden beam. Due to security buffer minimum 40mm.

Practical example CONCRETE:

Lower ceiling is 150mm below the main concrete. Concrete type is C25/30. (see
concrete types and strengths in 6 INSTALLATION – CEILING UNIT).

L=150mm
L1=40mm

L2=150-55mm; L2=95mm
LTR= L1+L2; LTR=40+95=135mm

Maximum length of the 4 threaded bars is 135mm.

Practical example WOODEN BEAM:

Lower ceiling is 150mm below the main wooden beam. Wooden beam is
100x100mm.

L=150mm

L1=100mm

L3=40mm

L2=150-55mm; L2=95mm

LTR= L1+L2+L3; LTR=100+95+40=235mm

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Maximum length of the 4 threaded bars is 235mm.

CONCRETE WOOD

7a. Lifting mechanism fixation. Please refer to part numbers 13 and 16

Part number 13 (1)

Part number 16 (2)

7b. Please mind the necessary depth in concrete (6 INSTALLATION – CEILING UNIT). Both parts

are equipped with concrete anchors. These must be put inside the hole by force and then the
respective nut inside the part must be tightened until the part is securely fixed into the
concrete. PLEASE NOTE THAT BY WOODEN BEAM WE ADVISE TO FIX THE LIFTING MECHANISM
COMPLETELY THROUGH THE WOODEN BEAM.

7c. Please mind the direction of part 13 and 16 as a rope will be used to lift the ceiling unit.

Thus the direction of rope should be direct from Back lift assembly (part 13 -1) to Front lift
assembly with locking mechanism (16-2). Please refer to picture below showing view from the

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CONCRETE

WOOD

13 (1)

16 (2)

16 (2)

16 (2)

13 (1)

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8. Bring the DRY SIREN box with ceiling unit in it under the spot where it will be installed. Take

supplied rope (part number 15) and fix it step-by-step onto the lifting mechanism and DRY
SIREN ceiling unit. Please take the hitch and fix it into the clip (1) of the Back lift assembly (part
number 13). Untangle the rope and with the other end continue through the lifting mechanism
of ceiling unit (2). Continue guiding the end of the rope through the wheel of Back lift assembly
(3) out in direction of Front lift assembly (4). Please make sure that the rope is correctly guided
through the locking mechanism (5). Pull the rope towards yourself until the rope is tight. Do
not lift the ceiling unit yet. Rope is 14.5m long, you can thus use it for a maximum ceiling-to­floor distance of 4.5m.

1 2 3 4 5

9a. Perform test of lifting mechanism. Please note that a force of 500N

is required to pull the ceiling unit effectively up to the ceiling. A person
performing the task must weigh minimum 70kg. A person with lower
weight may be outweighed by the weight of the ceiling unit and
accident may occur with result in person’s injury and unit’s damage.

500N

min. 70kg

Max. ceiling

height 4.5m

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11. Test the functionality of locking mechanism. Please refer to picture

below. Once you tested the tightness of lifting mechanism and locking
mechanism you are ready to proceed to lifting the unit. This is designed
as one man job.

10. Check the final distance of threaded bars and locking hooks on the

ceiling unit. Should correction be needed, untight the hex screws and
position to the correct position. Tight with hex screw.

Move right-left.

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12. Next step will be actual fixation of the ceiling unit to its final position. Please note this step

and its process but do not lift or fix the unit yet as you need space to connect wires,
refrigerant pipes and condensate drain. You need to have the installation of other parts ready

to proceed with following steps. Please fix the hooks onto the threaded bars 4x. Please fix the
hooks with MX8 on each threaded bar. Secondly attach the steel rope clips onto the ML1 d8 to
secure the ceiling unit 4x. Below picture shows fixed hook and steel rope clip on a threaded bar.

Unit must be perfectly levelled using spirit level! Uneven position may cause condensate drain
leak and malfunction. Allowed tolerance is +/-0.3%.

MX8

max. +/-0.3%.

MX8

CONCRETE

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max. +/-0.3%.

WOOD

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Clip

Hook

Please view the final fixation of the ceiling unit. The ceiling

unit must be fixed on 4 hooks which are tightened onto 4

threaded bars. Each fixation point is secured with a steel rope

WOOD

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Hook

Clip

Please view the final fixation of the ceiling unit. The ceiling

unit must be fixed on 4 hooks which are tightened onto 4

threaded bars. Each fixation point is secured with a steel rope

CONCRETE

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13. It is advised to construct 2 service hatches 400x400 next to DRY SIREN ceiling unit as per

below drawing.

When installing you may use help of scaffold base or ladder. Mind all local work, health and
safety requirements. Manufacturer is not responsible for injuries caused by inappropriate tools,
equipment or work procedures.

400mm

400mm

400mm

400mm

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7. INSTALLATION – COMPRESSOR UNIT

Compressor unit is designed for an
installation in technical room. It is a
metal box with 4 silent blocks ideally to
be installed on a wall console. This part
describes the fixation on a wall console.

Please refer to position of the
compressor unit in terms of surrounding
walls and objects.

1. Locate the appropriate location for compressor unit. Drill 4 holes for fixation screws and fix

the wall consoles on a wall. Make sure the wall console is leveled with spirit level with max.
deviation of +/- 0.3%

197mm

max. +/-0.3%.

min. 500mm

min. 100mm

min. 300mm

min. 300mm

min. 300mm

max. 100mm

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8. INSTALLATION – ELECTRICAL CONNECTION

Connection of the unit onto the mains must conform to relevant safety standards valid in your
country.

Main power connection is lead to Compressor unit. Compressor unit then powers the ceiling unit.

Connection requirements: Power supply: 220-240V / 50Hz. Protection: 16A, type C, by a
protective switch (RCD) with nominal differential drop-out current not exceeding 30 mA.

Main power supply cable: 2.5mm2 CYSY, three core – Live, Neutral, Earth.

The main circuit breaker switch of the compressor unit must be situated outside of the swimming
pool hall. The main switch of the unit must be bipolar, with switch-out breaking of conductors L and
N. An appliance for disconnecting the unit from the mains must be embedded into a firm surface.
The distance of contacts, when switched off, must be at least 3 mm for all poles.

In order to protect the unit from weather anomalies it is recommended to install power surge
protection class 1. B+C+D.

2. Mount the compressor onto the wall console. Please refer to below drawings. All nuts and

screws are supplied.

Nut M8

300mm

The connection of the appliance to the electric mains must be carried out by a
certified electrician.

max. +/-0.3%.

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Please mind all electrical safety precautions from section 3.1 ELECTRICAL SAFETY

1. Please use supplied eight core cable (part number 11 with markings 1,2,3,4,6) and three core

cable (part number 12 with markings L1,N1,Earth). Both cables are to be connected to both
ceiling and compressor unit.

Ceiling unit electrical and
communication connection.

2. Open the black connection box with hand pushing from the sides and pull up.

3. Please connect all connections with respective markings – L1, N1, Earth, 1, 2, 3, 4, 6 for

DRY SIREN mono and L1, N1, Earth, 1, 2, 3, 4, 6 for DRY SIREN due. The connections 5 and 7
are for Bluetooth receiver which in DRY SIREN due connects the ceiling units with each other
– part 19 - Bluetooth cable receiver. Once connected, please close the black box.

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4. Take both cables and connect them onto terminals into compressor unit.

Compressor unit electrical and

communication connection.

5a. Lead the cables through the cable joint connectors. Unscrew the plastic top.

Top

Bottom

Female connector for bluetooth
receiver cable.

Male connector
for bluetooth
receiver cable.

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5b. Lead the cable through the top to bottom. Then tighten the top back.

6. Please connect the ceiling unit

power supply cable (L1, N1,
Earth) and compressor unit main
power supply cable (L, N, Earth)
onto the compressor terminal
connection.

7. Please connect the

communication cable (1, 2, 3, 4,

6) for DRY SIREN mono. 1,2,3,4,6
for DRY SIREN due.

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9. DRAINAGE OF CONDENSATE WATER

Condensed water is pumped from the unit upwards with total vertical discharge of 40cm (netto out

of the unit 20cm) and then by the force of gravity (downwards). Unit’s condensate tray is levelled to

have sufficient declivity when the ceiling unit is perfectly levelled (using spirit level) with tolerance
+/- 0.3%. Compressor unit uses only the force of gravity. The condensation water must be drained
through a siphon into a municipality sewage system or into the outside environment. Please do not
place the drainage hose upwards (against gravity); this will lead in unit’s inability to drain the

condensate water. This will subsequently cause water leakage from underneath the unit’s cover and
may lead to unit’s malfunction, damage or failure. Also it may cause the underlying floor be wet,

which creates danger of accident and harm to health resulting from unwanted slip. Manufacturer,
distributor or reseller are not responsible for such damages.

Incorrect drain installation.

Avoid ‘waving’. Accumulated water in downslope

‘waves’ avoids normal condensate drain and will

result in water leakage.

Incorrect drain installation.

Do not increase the drain after it was in

downward slope.

Do not drink the condensate water. Do not pour or let the condensate water back
to the swimming pool. It may be contained with bacteria.

Downward slope.

max. 200mm

Siphon.

TR8

Fix the condensate drain

onto the TR8.

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Compressor unit is supplied with a condensate drain hose. Please follow instructions below to
correctly install the condensate drainage.

Correct drain hose Incorrect drain hose installation.

CONDENSATE DISCHARGE

Condensate drain

Condensate drain

Condensate drain

Condensate drain

tub

Bath tub

basin

plumbing

Overflow

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10. INSTALLATION – REFRIGERANT CONNECTION

DRY SIREN requires refrigerant circuit connection in order to operate normally. This section explains
the refrigerant installation in detail. Refrigerant circuit must be sealed.

IMPORTANT: Please note that refrigerant connection can be performed by an
authorized person only. The person must have a valid refrigeration license.

Compressor unit is not pre-charged with refrigerant R410A from the factory. The pre-charged
amount of refrigerant is =0.00kg= R410A. The unit must be filled with 1.05kg R410A as nominal
charge. This charge is enough for 8 meter long refrigerant connection. Certain amount of refrigerant
must be added to the system per each meter exceeding 8m of connecting distance.

Please note that it is needed to add 30g of R410A per 1 meter for

exceeding 8m connecting distances above nominal charge 1.05kg.

Piping length and elevation

Heat

pump

model

Pipe size

Factory pre-

charged

connection

distance

Max.

vertical

distance

(B)

Max.

distance

(A)

Additional

refrigerant

Gas (diameter)

Liquid (diameter)

inch

mm

inch

mm

DRY SIREN

1/2

12.7

3/8

9.52

=0.0=

8m

20m

30g/m above 8m

10.1 Determining the pipe length and refrigerant charge.

It is important to correctly measure the refrigerant pipe length and calculate the necessary
refrigerant charge. Please refer to picture below as an example. Pipe length is 15 meters.

Factory pre-charge: 0.00kg

Nominal charge needed: 1.05kg

Additional charge: 12+3-8= 7m; 7 x 0.03=0.21kg

Total final charge needed: 1.05+0.21= 1.26kg R410A

Compressor

unit

Ceiling unit

Ceiling unit

Compressor unit

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Note: The picture is illustratory and is not designed to reflect the exact measures and distances correctly.

10.2 Refrigerant piping

I. Align the center of the pipes and sufficiently tighten the flare nut by hand. Please do so for

both Suction and Discharge pipes. Suction pipe has bigger diameter. Discharge pipe has
smaller diameter.

II. Tighten the flare nuts with torque wrench until the wrench clicks. Please make sure that the

direction for tightening follows the arrow on the wrench.

Pipe connection on compressor unit.

Pipe connection on ceiling unit.

Please review below table for torque force.

Compressor unit

Ceiling unit

12m

3m

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Outside diameter

Torque kgf

m

inch

mm

3/8

9.52

3.4-4.2

1/2

12.7

5.5-6.6

III. Forming and insulation the piping.

The pipes must be insulated and secured
with vinyl tapes. This is done in order to
prevent condensation on the piping.

It is highly advised to place the piping into
a plastic protector when installed in the
ground (soil).

On places where piping goes through a
wall or similar it is advised to use gum
type sealer or construction foam to seal
the openings.

1. Compressor unit below ceiling unit

Tape the piping and interconnecting cable from down
upwards. Fix the tapped piping with cable binder or equivalent
onto the exterior wall. It is important to make a trap to prevent
water from entering into the electro installation of the
condensing unit.

2. Compressor unit above ceiling unit

Tape the piping and interconnecting cable from down
upwards. Fix the tapped piping with cable binder or equivalent
onto the exterior wall. It is important to make a trap to prevent
water from entering into the electro installation of the
compressor unit. On refrigerant side it is important to form a

syphon to avoid compressor’s oil leakage into ceiling unit
coils.

10.3 Flaring work

It is important to perform the flaring work correctly. This will have positive effect towards long-term
reliability and functionality of the DRY SIREN. Defective or incorrect flaring work is the most common
cause for gas leakage or other refrigerant circuit defect. Both then result in continuous decrease of
DRY SIREN efficiency and eventually lead into security turning off, malfunction, failure or damage.

Warranty does not cover any product, property or personal damages
or losses that are a result of incorrect flaring work, gas leakage,
incorrect welding work or improper material used.

Insulation

Suction

Discharge

Syphon

Please use refrigerant copper pipes with

insulation only.

min.

500mm

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When cutting the pipes and cables, please mind the following:

1. Measure the distance between the water and the condensing unit.

2. Cut the pipes a little longer than measured distance.

3. Cut the cable 1.5m longer than the pipe length.

Pressure test / Air purging / Filling the refrigerant

Sometimes bits of air and moisture remains in the refrigerant circuit. If this is not treated, following
symptoms may appear on DRY SIREN:

1. Pressure in the system rises.

2. Operating current rises.

3. Dehumidification efficiency drops.

4. Blockage of Electronic expansion valve due to frozen moisture resulting in complete failure of

the unit.

5. Corrosion of refrigerant circuit.

It is thus highly advised to take a leak test after evacuating the complete system. Leak test can be
performed with usual methods using manifold valve and/or soap water. Air purging can be
performed by most commonly applied methods with vacuum pump. This Installation and user
manual elaborates vacuum pump method.

Air purging with vacuum pump / Filling the refrigerant

1. Preparation

CORRECT

INCORRECT
Even

Slanted

Uneven

Rough

Smooth, shiny without scratches

Same length all around

INCORRECT FLARING

Inclined / Surface damaged / Cracked / Uneven

thickness

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a. Check that each tube (both suction and discharge) between the ceiling and

compressor units have been properly connected and all wiring for the test run has
been completed.

b. Remove the service valve caps from the suction side on the compressor unit. Please

note that both the suction and the discharge side service valves on the compressor
unit are kept closed at this stage.

2. Vacuum test
a. With a service valve wrench (imbus wrench), turn the suction and discharge valve

counter-clockwise to fully open both valves.

b. Connect the charge hose end described in the preceding steps to the vacuum pump

to evacuate the piping. Confirm the “Lo” knob of the manifold valve is open. Then,
run the vacuum pump. The operation time for evacuation varies with tubing length
and capacity of the pump. The following table shows the time required for
evacuation when using a vacuum pump of 30 gal/h power.

Required time for evacuation when 30 gal/h vacuum pump model is used

Tube length less than 10m

Tube length more than 10m

Minimum 20 minutes

Minimum 30 minutes

c. When the desired vacuum is reached, close the “Lo” knob of the manifold valve and

stop the vacuum pump.

d. Close the valve on charging hose at vacuum pump.

3. Refrigerant filling
a. Now remove the vacuum pump and bring the refrigerant bottle and charging scales.

Connect the disconnected hose (point d above) to refrigerant bottle (liquid side).
Place the bottle on charging scales and turn the scales on. Please make sure no
object, pipe, cable or other touches the bottle or charging scales. Otherwise weight
misreading may occur.

b. Please close the valve at hose at suction side of compressor unit.
c. Open the manifold ‘Lo’.
d. Open the valve at hose at refrigerant bottle.
e. Open the bottle’s valve.
f. Zero the charging scales out.
g. Open the valve at hose at suction side of compressor unit. Please mind that the

compressor unit is still off.

h. Wait until the unit sucks necessary amount of refrigerant. Charging scales typically

shows the weight as negative number (how much was taken out from the bottle).

i. Sometimes the necessary amount of refrigerant is not sucked into the system by

itself. The reason can be:

 room air temperature / bottle temperature too low
 Low bottle pressure (low amount of gas in bottle)
 Restriction in copper pipes

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 Incorrect copper pipe installation
 Malfunctioning / defective valve, hose or manifold valve

To resolve, please proceed step-by-step:

- Ensure stable room and bottle temperature of +20°C to + 30°C, ideal is when bottle

temperature is higher than air temperature

- Make sure that bottle contains at least a double amount of required amount of refrigerant

- Check the entire copper pipe installation and make sure it all complies this User’s manual

- Check the functionality of valves, hoses and manifold valve

- If all OK, you need to help the filling with a compressor ON. This is done by turning the power

supply to the unit on and actually turning the unit on into a dehumidification mode (i.e.
compressor on). This can be done only by an Android application. Please see section 11 UNIT
TEST – PAIRING for more details. Please DO NOT RUN THE UNIT WITHOUT REQUIRED
AMOUNT OF REFRIGERANT.

j. When the required amount of refrigerant has been filled into the system, first close

the valve at suction at compressor unit and remove the valve from compressor unit.
Please make sure you close the valve on bottle and ‘Lo’ knob on manifold valve.

k. Put service valve caps back at both suction and discharge side service valves and

fasten them tight. Please note those suction and discharge valves are to be kept
open for the unit’s operation. Make sure all copper pipes are properly insulation
against external conditions to prevent condensation and water leakage and also
burnt.

l. This completes the refrigerant work.

Please note that above flaring and refrigerant work must be performed correctly
with utmost care. Any non-compliance with above may and will likely lead into unit’s
malfunction, failure or damage. Such state means complete warranty void and
manufacturer, distributor or reseller cannot be taken responsible in such case for any
property or personal damage or loss.

Always use charging scales for refrigerant filling. Do
not use pressure as indicator of the correct
refrigerant amount.

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VACUUMING REFRIGERANT FILLING

Refrigerant filling

With a service

11. UNIT TEST – PAIRING

1. DRY SIREN is designed to be controlled exclusively via a mobile device application. In order

to control the unit you need pair it with your mobile device. You will need mobile device (e.g.
supplied tablet), WIFI connection and DRY SIREN LICENCE information. DRY SIREN’s pairing is
protected by double password entry. This is to avoid third parties logging into your DRY
SIREN device. DRY SIREN licence plate is located on the inside of the compressor unit’s door.
The plate looks like following:

DRY SIREN LICENCE EXAMPLE

SN: XXXXXXXX SN: 17164001
Real ID: YYYYYYYY Real ID: 9LheRL6q
PASSWORD: ********* PASSWORD: 123456789
APP LOGIN: XXXXXXXX APP LOGIN: 17164001
APP PASSWORD: ****** APP PASSWORD: 123456
BLUETOOTH SPEAKER ID: JPM2021 BLUETOOTH SPEAKER ID: JPM2021

DATE: XX.XX.XXXX DATE: 01.01.2017

Ceiling unit

Compressor

unit

Pressure

gauge

Vacuum pump

Hose with valve

Refrigerant

bottle

Charging scales

Please note that 1.05kg is
in this picture illustratory.

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2. Turn the supplied tablet on via pressing and holding upper right button on the side. Supplied

tablet type may be Acer Iconia One 7 or similar. Please wait until tablet starts and goes to
home screen.

3. Connect the tablet to your WIFI.

Go to Wi-Fi

Select your WIFI hotspot network

(in our case ‘MicrowellAP’)

Go to settings

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4. Open the ‘Microwell’ application on home screen. Wait until you enter the application.

If necessary insert network

password and press

connect

After you are successfully

connected proceed to next

step

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5. Now you need to pair DRY SIREN.

6. It is necessary to activate DRY SIREN access point. This is

activated by pressing and holding the PAIR button on
compressor unit for 3 seconds. White colored LED light
flashing on ceiling unit will signalize that the unit is ready to
pair. You will also notice increased performance of the fan on
the ceiling unit.

Wait until the

application starts, then

press ‘PAIR AGAIN’.

At this moment please

Confirm by pressing

‘PAIR’

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7. Step 1/5

7.

8. In the next screen (Step 2/5) choose your internet connection

Choose DRY SIREN+Real ID,

in our case ‘DRY SIREN

9LheRL6q’

Press ‘FIND DRY SIREN’

Press ‘FIND HOME WIFI’

WIFI hotspot, in our case

‘MicrowellAP’

Press CONNECT

If the device requires password, insert

password 9 digit password from

Licence plate. Please mind that ‘0’ is

zero key and ‘3’ is number 3 key. Then

press CONNECT.

Once it shows „Connected“ you
have to jump back with „Back“

screen button to proceed to the
next screen.

Once it shows „Connected“ you
have to jump back with „Back“

screen button to proceed to the
next screen.

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9. Wait for password window and insert password.

10. Step 3/5

Press SELECT DRY SIREN

Press CONNECT

Then press CONNECT

Select DRY SIREN 9LheRL6q

Once it shows „Connected“ you
have to jump back with „Back“

screen button to proceed to the
next screen.

Once it shows „Connected“ you
have to jump back with „Back“

screen button to proceed to the
next screen.

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11. Step 4/5

12. If there is working internet connection, correct password and all working properly, your set up is

complete.

Select your internet connection WIFI

hotspot, in our case ‘MicrowellAP’

Press CONNECT

Press SELECT HOME WIFI

Press START USING

DRY SIREN.

Once it shows „Connected“ you
have to jump back with „Back“

screen button to proceed to the
next screen.

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13. Now you are in Microwell application home screen.

To exit the application, simply close it in Android. Do not use Sign out for this purpose. Sign out will
sign you out of the application. You will need the application Login ID and Password to sign again.
Please note that if you are signed out of the application you cannot control the DRY SIREN.

11.1 AFTER PAIRING, TEST RUN

After you have successfully paired the device you can run it for testing. When the unit is given
command to dehumidify (required humidity below actual) in order to protect the compressor, the
units starts to collect water after 3minutes. Minimum water collection time (compressor on) is 5
minutes.

Please turn to next section for more information about application description and control.

DRY SIREN remembers the pairing. If there is a power supply cut or you turn the unit off. After the
unit is turned back on it will be connected automatically to the server. This does not apply if your
WIFI NETWORK ID has changed, or your WIFI NETWORK PASSWORD has changed.

RECOMMENDATION: Cover your pool when not used. It will reduce the amount
of vapor in the air and energy costs needed to operate your dehumidifier.

DRY SIREN is paired and

working properly.

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12. MOBILE APPLICATION - INSTRUCTIONS FOR USE

12.1 Control

DRY SIREN is controlled by an Android DRY SIREN application over WIFI. When DRY SIREN is plugged
into the mains and is correctly installed, it will turn on and work on factory preset settings. The unit
will operate to achieve 60% relative humidity with auto light and microLIGHT+. Bluetooth speaker
will be also activated. Control over WIFI and mobile application allows the user to take over full
control of the unit, dehumidification process, LED lamp, microLIGHT+ and Bluetooth speaker.

Do not run the unit without required amount of refrigerant. Before you proceed

make sure that all installation (electrical, refrigerant, etc.) According to this user’s
manual had been done correctly and in full compliance to this user’s manual.

Description of the home screen

microLIGHT+

indication of

current humidity

Current humidity

Current air

temperature

DRY SIREN serial

number

Status of the DRY SIREN

- Connected

- DS unreachable

- DS error

- Pair again

If water drops are
shown, DRY SIREN
is in the process of
dehumidifying

Humidity control

Lamp control

Speaker control

Application

settings

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Humidity control

Humidity settings.

You can set any from

1% to 99%. The

system will advise

you when set under

40% or above 70%.

Back to Home
screen button

Current humidity

microLIGHT+

indication of

current humidity

Status of the DRY SIREN

microLIGHT+

indication of

requested humidity

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Lamp control

Back to Home
screen button

LED lamp ON/OFF

LED lamp manual

brightness (disabled

when auto

brightness is on)

LED lamp Auto

brightness ON/OFF

LED lamp color

temperature

microLIGHT+

ON/OFF

microLIGHT+

indication of

current humidity

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Speaker

If you hear the sound playing from DRY SIREN, your Bluetooth speaker works properly
In order to play music go to home screen and turn the Music player on. (Music can be played from
any source – streaming like youtube, Spotify, memory card, etc.).

Turn the speaker

To activate the speaker go to

Tablet’s Bluetooth settings and

turn the Bluetooth on.

Device will find and pair itself with

DRY SIREN speaker (Bluetooth

speaker ID, e.g. JPM2021). By DRY

SIREN due please mind MASTER and

SLAVE units. Master unit is visible for

Bluetooth pairing.

After pairing is successful, go

back to application and test

sound.

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13. TECHNICAL DATA

13.1 Technical data table

DATA

UNIT

DRY SIREN MONO

For swimming pools with max. water surface

m2

60

Extraction rate at 30°C and 60 % RH

l/24hrs

67

Extraction rate at 30°C and 70 % RH

l/24hrs

88

Extraction rate at 30°C and 80 % RH

l/24hrs

104

Operational temperature - standard

°C

5-35

Operational humidity range

% RH

20-100

Air flow

m3/h

1000

Noise level (in 1m distance) Ceiling unit

dB (A)

35

Heat output

W

4500

Energy consumption

W

1000

Voltage

V/Hz/f

230/50/1

Operating / Starting current

A

5.2 / 15

Protection

A

16

Conductor

mm2

CYSY 3C x 2,5

Condensed water pipe

mm

d 18

Dimensions netto (width x height x depth)

mm

Ceiling unit round shape (1210x278),

Compressor unit (251x467x404)

Dimensions brutto (width x height x depth)

mm

1400 x 1550 x 850

Weight

kg

Ceiling 53 / Condensing 20

Amount of refrigerant - R 410 A

kg

minimum 1.05kg; 2.088t CO2 ekv. = 1.0kg R410A

Max. pressures in the system HP/LP

bar

28,5/8,5

WIFI specification

-

Standard worldwide

IEEE802.11b/g/n

2.412~2.484 GHz

Internet connection

-

minimum 40kB/s, 13GB per month data volume

Bluetooth speaker

-

80W stereo, 80Hz-20kHz, 4-8Ω,

Bluetooth 3.0 + EDR

LED lamp

-

50W, Warm 3.000K, COLD 5.500K, 4000lm

dimmable 0-100%

energy class A+

* Manufacturer reserves the right to change above data without notice. For DRY SIREN DUE the data apply in
duplicity.

Gas circuit is filled with refrigerant R410A which is two-content refrigerant (R32/R125). Based on ES No. 842/2006 are these contents
considered to be a fluorocarbon greenhouse gases. The unit contains fluorocarbon greenhouse gases included in Kyoto Protocol:

R410A with global warming potential (GWP) 1720:
(R-32/125 50/50)
CH F +CF CHF

1.0kg = 2.088t CO2 ekv.

For exact amount of refrigerant in your device; please turn to serial number sticker (located in the
upper right corner of the unit from the back).

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13.2 Extraction rate diagram

13.3 Wiring diagram

CEILING UNIT SIREN

TO COMPRESSOR UNIT
L1 N1 1 2 3 4 6

COMPRESSOR UNIT

POWER SUPPLY

POWER SUPPLY

UNIT

COMMUNICATION

230VAC /

TO CEILING

L N - L1 N1

FUSE

....

....

RS232

PAIR

R BR BL

CM

16A „C“

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14. HINTS & TIPS

14.1 Error messages

DRY SIREN is equipped with Microwell unique feature microSAFETY+ which enables the manufacturer
to see actual technical data of your DRY SIREN in real time. In the case the data indicate technical
problem on your DRY SIREN, the manufacturer will advise the distributor/reseller to take appropriate
action. Most of error messages are visible only to the manufacturer and also can be accessed via a
serial port on compressor unit. This access should be performed by a trained technician with proper
equipment. This User’s Manual is not designed to deal with serial port access.

Please find here list of error messages visible to end User.

Error message

Description

DS UNREACHABLE

Loss of communication. This error occurs if in last 70 seconds there
is no response from DRY SIREN to the server. Once you see this
error, please wait 5-10 seconds. Sometimes when response from
server due to internet connection is slower, temporarily (max.

10seconds) the DRY SIREN may be ‘UNREACHABLE’. This error

relates to WIFI connection, server error or internet connection in
general. Please turn to section 14.2 Troubleshooting – save time
and money for more information how to resolve this error.

ERROR IN SENDING
COMMAND

User will be notified by a short pop-up message in the application if
the requested command experienced error in processing. Normally
when a command is successfully processed, a short pop-up

message appears ‘SENDING COMMAND’. Typically this error occurs

due to insufficient internet connection or momentary unavailability
of internet connection. To resolve, please repeat the command
again.

PAIR AGAIN

This is a status shown in application for a particular DRY SIREN.
DRY SIREN is not paired with your device and you are unable to
control the DRY SIREN. To resolve please pair the device. Please
turn to section 11 UNIT TEST – PAIRING. After the pairing is
complete, status bar will show ‘CONNECTED’.

DS ERROR

Technical error on the device. Error relates to hardware
malfunction. This situation requires professional service.
Manufacturer is able to see this error message online if the unit is
connected to the internet. Also the error message is accessible by
serial port.

14.2 Troubleshooting – save time and money

Problem

Cause / Description

Solution

I am unable to
pair the DRY
SIREN

Pairing mode is not
activated

Press and hold the pairing button for 3
seconds.

DRY SIREN is not visible
(mobile device cannot

Press and hold the pairing button for 3
seconds.

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locate the DRY SIREN –
‘DRY SIREN ID’

No internet connection

Check your internet connection. Check your
WIFI network password. Check that you have
internet connection. Sometimes your WIFI
network signals properly but your WIFI router
does not have internet access. This may the
case of malfunction of your ISP (Internet
Service Provider) service, hardware problem,
etc. Some ISPs tend to turn your internet
connection off if your bill is overdue.
Alternatively restart your WIFI router.

Incorrect internet
password

Check your WIFI network password.

Incorrect DRY SIREN or
Mobile application log­in password

Check the passwords on DRY SIREN LICENCE
PLATE.

Temporary server
unavailability

Please wait 5 minutes and repeat the
procedure. If you wait longer than 15minutes
and the pairing does not work, contact your
distributor or reseller.

I am unable to
control my DRY
SIREN.

Internet connection
problem / pairing
problem.

Failure ‘DS
UNREACHABLE’ shown
in application. Once
you see this error,
please wait 5-10
seconds. Sometimes
when response from
server due to internet
connection is slower,
temporarily (max.
10seconds) the DRY
SIREN may be
‘UNREACHABLE’.

1. Check your WIFI network is working and
that is it connected to the internet.
Sometimes your WIFI network signals
properly but your WIFI router does not have
internet access. This may the case of
malfunction of your ISP (Internet Service
Provider) service, hardware problem, etc.
Some ISPs tend to turn your internet
connection off if your bill is overdue.

2. Check power supply to the ceiling and
compressor unit.

3. Restart the DRY SIREN by turning the circuit
breaker off and on again. Please allow 60
seconds to boot the unit.

4. Perform pairing process. Please turn to
section 11 UNIT TEST – PAIRING.

DRY SIREN does
not respond to
commands set by
application.

You change settings in
application but DRY
SIREN does not react.

1. Please allow between 1 and 5 seconds to
process a command. The time needed to
process a command depends on your internet
connection. If command is not processed
correctly you are advised by a pop-up
message ‘ERROR IN SENDING COMMAND’.

2. Make sure you are commanding correct
DRY SIREN – please turn to DRY SIREN Serial
Number shown in application and compare it
to the serial number on a Compressor unit.

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3. Make sure you are not in DEMO
Application. DEMO application by ‘TRY ME’.

4. Make sure your DRY SIREN is connected to
mains. You can check this by a circuit breaker.
Also at ceiling unit you should hear the fan
running. Please note that the fan is extremely
quiet at normal operations.

5. Alternatively restart your WIFI router.

DRY SIREN does
not start
although
connection
seems OK.

The heat pump is not
connected to the mains
or does not have power
supply or circuit
breaker is off.

Check the heat pump’s connection to the

mains and circuit breaker. Check order of the
phases.

DRY SIREN does
not seem to
work. I have
condensation on
windows, humid
air, etc.

Desired humidity
equals current.

Everything is OK. It is normal that DRY SIREN
does not operate because it has reached
requested humidity level. If you feel that the
air is humid or you have condensation,
decrease the requested level of humidity.

DRY SIREN does not
work for 3 minutes and
then it starts.

This is normal. It is time protection for
compressor.

DRY SIREN operates too
short

Please allow DRY SIREN to run 24 hours and
then check the humidity again.

DRY SIREN is not
connected to the mains
or does not have power
supply or circuit
breaker is off.

Check the DRY SIREN’s connection to the

mains and circuit breaker.

DRY SIREN has a
technical problem. In
such case error

message ‘DS ERROR’ is

shown in application.

Call for service.

Refrigerant leak, not
enough refrigerant,
restriction or other
problem on refrigerant
connection.

Check the refrigerant connection and amount
of refrigerant. Call for service.

DRY SIREN works
but the air is
humid, there is
condensation on
windows, etc.

The pool size is too big
for DRY SIREN.

Speak with your distributor or reseller and
double check the correct capacity for your
pool.

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Insufficient air flow.

DRY SIREN’s evaporator

or air flow is blocked by
dirt, objects, etc.

Please check the DRY SIREN’s ceiling unit

positioning for correct positioning 6.2

APPROPRIATE POSITION OF CEILING UNIT.

Other

Other

Please call for service.

14.3 Maintenance

At least once a year it is necessary to have the unit checked to maintain its service and sustain
reliability. Following objects/items to be checked:

- Ceiling unit fixation – threaded bars and nuts holding OK? No crack/damage/bend?...

- Condensate drain – does it drain OK? Clean of dust? No waving? No leakage?...

- Copper pipes – connection OK? No leak? Pressures OK?....

Unit is equipped with 24/7 protection system microSAFETY+. Unless the unit shows error
message or unless manufacturer advises your supplier of an error or seeming malfunction,
the unit is fully operational and working in order.

14.4 Summer shut-down

Some swimming pool users use to shut the dehumidifier for the summer down. This is mainly due to
favorable weather conditions with dry and warm weather. In such case, good air ventilation / natural
air exchange does the job of humidity control for few weeks of the year. Although following rapid
change in weather (e.g. into rainy days) may result in high humidity in your pool.

In this case please make sure that:

1. Dehumidifier's circuit breaker is off (i.e. dehumidifier does not have any power supply)

2. Dehumidifier is cleaned of dust, fluff or other dirt that may harden / stiffen its structure during

the shutdown period making it hard to remove afterwards.

3. Make sure air inlet and outlet are covered properly so no chlorine or other chemicals are not
input into dehumidifier body, especially ventilator bearings. Failing to do so may result in bearings
corrosion and failure of the dehumidifier.

4. Manufacturer does not suggest any planned shutdown of the system because during shut down
period the humidity is not controlled effectively and automatically.

14.5 Super-chlorination cleaning

Although DRY SIREN is constructed from the most durable and chemically resistant materials,
chlorine is a very aggressive substance. Typical pool air chlorine content is up to 1.0ppm. DRY SIREN
is equipped with special anti-chlorine protections but cannot protect the unit in environment of
higher chlorine than 3.0ppm. When cleaning the pool hall premises by super chlorination please note
that DRY SIREN must be off as chlorine concentrations go beyond warranty 3ppm up to 24ppm
during super chlorination. The unit must be off and ideally covered.

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14.6 Start-up during construction

When you start the device at pool which is still under construction, please start the device for a
minimum time. Do not run the device longer than few minutes. Dust present in air may be gathered
on coils and reduce the water collection capacity. Perform the start-up test and demonstration but
keep the unit off and covered until the pool is fully constructed.

14.7 microLIGHT+

DRY SIREN is equipped with Microwell unique system microLIGHT+. This is built into the LED lamp
and if activated (mobile application LIGHT settings) microLIGHT+ will signalize the actual level of
humidity through color.
BLUE – humidity low
GREEN – humidity OK
YELLOW – humidity is rising above critical level
ORANGE – humidity is rising above critical level
RED – humidity too high

Ideal humidity in pools is between 55% and 65% RH. Humidity above 70% is too high and
continuously deteriorates the materials in the pool and creates a favorable environment for bacteria.

Humidity below 40% dries mucous tissue and is typically considered ‘dry’. With microLIGHT+ you do

not need to understand the figures. When there is green you have no problem. Where there is
continuous red, you have a problem.

microLIGHT+ will also signalize your humidity is rising. For example if you have your pool covered and
humidity OK, you have green light. When you uncover it and start swimming, it is possible that after
some time the microLIGHT+ will turn to some gradient of yellow, orange or red. This signalizes that
your humidity is rising. Do not be disturbed, this is normal. Once you stop using the pool for the day
and cover it, DRY SIREN should dry the air out in maximum few hours (depending on actual sizing of
your pool) and the color should go back to normal, i.e. green. If red persists for longer than 1 day,
please check the device.

15. WARRANTY

This dehumidifier is subject to a warranty period of 2 years. It may have been prolonged in your
country or by your distributor or reseller. Please contact your reseller or distributor in the case a
warranty should be claimed for this dehumidifier.

Please note that no claims will be accepted (warranty void) if:

1. The dehumidifier has been used in an incorrect way, not as described in this manual or in

contrary to this User’s manual or against Safety measures of this User’s manual.

2. The dehumidifier is installed in an incorrect way, not as described in this User’s manual or in

contrary to this User’s manual.

3. The dehumidifier was put to operation by an unauthorized person.

4. The air flow through the dehumidifier is out of the defined borders.

5. The unit has been exposed to a mechanical damage / force or any unauthorized action was

performed on construction of a unit - welding, brazing or has been mechanically damaged
resulting in scratches, blends, compressions, pipe ruptures, etc. No mechanical damage is
accepted as warranty claim. Transport damages must be claimed in written with transporting
agent delivering the device.

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6. Chemical conditions in the pool or pool hall have not been within the defined borders (please

see below table Allowed chemical conditions).

7. The dehumidifier suffered frost or overheating damage resulting from ambient air

temperatures out of Temperature operational range.

8. The electric tension source is insufficient or improper in any other way.

Allowed chemical conditions:

Acidity / pH level: pH 7,4 +/- 0,4
Total alkalinity, as CaCO3 ppm 80-120
Total hardness, as CaCo3 ppm 100-300
Total melted dry mass ppm max. 3000

Maximal saline content wt/wt 6%
Free chlorine range ppm 1,0-3,0

Superchlorination ppm max. 30 ppm/max. 24 hours
Bromine ppm 2-3
Baquacil ppm 25-50
Ozone ppm 0,8-1,0
Maximum copper content ppm max. 2
Aquamatic single purifier ppm max. 2
Tarn clean purifier ppm max. 2
Sherwood purifier ppm max. 2

Table: Allowed chemical conditions

TRANSPORT INSTRUCTIONS

When applying for warranty, please contact your distributor and indicate dehumidifier
model and serial number. Please describe the genesis of the failure.

The compressor unit must be transported in the original packaging only and
in a vertical upright position. Make sure that the compressor unit cannot
turn over or fall down during transport. Never put the compressor unit aside!
It may lead to serious compressor damage, unit’s malfuction, damage or
failure. This is warranty void.
No mechanical damage is accepted as warranty claim unless a written claim
had been made with transporting agent delivering the device. When
receiving the product please check whether the package is not damaged.
Please make a proper
documentation of any damage immediately after delivery and claim all

transport damage in written form with the forwarding agent at the delivery.

SWIMMING POOL DEHUMIDIFIER DRY SIREN

15.1 INSTALLATION CHECK-LIST AND WARRANTY CARD

FOR THE INSTALLER:

After the installation please go through below check-list. Fill it in, sign, stamp and hand over to
customer please.

Ceiling unit fixed and secured with hooks
and clips (total 8x)

YES NO

Eventual disruptions in vapor barrier fixed.
Vapor barrier not disrupted.

YES NO

Condensate drain of ceiling unit installed
correctly (max. 20cm upward, then declivity,
no waving, no elevation; end by siphon)

YES NO

Electrical connection done OK
YES NO

Refrigerant connection done OK
YES NO

Leak test performed without leakage(s)
detected

YES NO

System vacuuming performed
YES NO

Connecting refrigerant distance

…………………………………… meters

Final refrigerant charge

……………………………………kg R410A

Mobile application successfully paired and
tested

YES NO

Bluetooth speaker successfully paired and
tested

YES NO

Date: ……………………………………………………

Name:…………………………………………………..

Company stamp:…………………………………………………………. Signature:…………………………………………

SWIMMING POOL DEHUMIDIFIER DRY SIREN
MANUFACTURER: MICROWELL, SPOL. S R.O., SNP 2018/42, 92701 SALA, SLOVAKIA. www.microwell.eu, [e-mail].

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NOTES:

SWIMMING POOL DEHUMIDIFIER DRY SIREN

Manufacturer:
MICROWELL, spol. s r.o.
SNP 2018/42, 927 01 Šaľa, Slovakia
tel.: [phone]
fax: [phone]
e-mail: [e-mail]
w w w . m i c r o w e l l . e u

M a d e i n E U

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