Ecor-Pro DH3511 User manual

Design
Great British
DESICCANT DEHUMIDIFIER DH3511 MANUAL
110V
50Hz

2
For safety reasons, read this information carefully before operating.
Persons who are not familiar with this type of product must not use it.
The dehumidier is safe, however, as with other electrical appliances, use it with care.
This dehumidier is designated for indoor operation. It must be earthed and should only be connected to
an earthed 110V / 50Hz mains. The installation must be in accordance with the regulations of the country
where the unit is used.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given supervision or
instruction concerning the use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
• Disconnect from the mains when not in use.
+
Thank you for choosing this innovative dehumidier.
This manual describes the many benets and advanced features that this unique product has to oer.
This dehumidier is a tough, industrial unit designed to be used almost anywhere that dry air is required.
Desiccant/Absorption dehumidiers are especially suited to applications where low relative humidities are
needed and they work well over a wide temperature range.
We specialise in complete indoor humidity control. Our world class products incorporate the latest
technological developments and are designed to create a quality environment.
It is important that you read these instructions carefully before installing and using your new dehumidier.
Please keep them in a safe place for future reference.
THANK YOU! |
SAFETY |

3
UK
• Disconnect from the mains before cleaning the unit or any of its components.
• Do not clean the dehumidier by spraying it or immersing it in water.
• Do not insert any object into the opening of the dehumidier.
• Any service other than regular cleaning, setting fan mode or lter replacement, should be performed by an
authorized service representative. Failure to do so could result in a loss of warranty.
• Your dehumidier is supplied with an electrical cable and an yellow industrial plug connected. Should it be
necessary to replace this plug at any time, it must be done by a qualied electrician.
Warning! Never operate this appliance if it has a damaged cord or plug. If the cord is damaged an
approved service representative or a similar qualied person must replace it in order to avoid any
hazards.
There should be direct access to the electrical plug after connecting the power!
Do not use your dehumidier under the following conditions:
• Where the power cable may be easily damaged
• Near a heat source
• Where small children may be left unattended
• Where there is a risk of liquids falling on the unit
• Where it may be damaged by chemicals
SAFETY (2) |
This product is
not made for
DIY repair.

4
HOW IT WORKS|
Your Desiccant dehumidier removes moisture
using a continuously rotating moisture
absorbing wheel —this ‘Desiccant Rotor’ is
literally a honeycomb of extremely hygroscopic
membranes.
A highly ecient yet low noise fan draws air into
the unit (Process Air In) and forces it through
a portion of the absorbent rotor. As the air
passes through the rotor, the honeycomb of
hygroscopic membranes absorb almost all
of the moisture creating an extremely dry air
stream; this air stream is discharged directly
through the ‘Dry Air Out' duct.
A second fan pushes a separate air stream
(Regen Air In) through a heater bank (Regen
Heater) where it’s temperature is raised. This
air is then channelled back through a section
of the rotor. As this air passes back through the
membranes, its higher temperature drives-
out the previously absorbed moisture and
discharges it as warm wet air through the ‘Wet
Air Out’ duct.
As the wheel rotates, this process of collecting
and discharging moisture is continuous.

5
UK
PATENTED DESICCANT ROTOR
The Desiccant Rotor is the heart of the dehumidier. It is an array of specially
absorbent membranes arranged as a series of corrugations (as shown in the
cut-away image) to give a vast surface area making it an extremely ecient. It is
encased in a galvanized steel ring and turns on high quality sealed ball bearing
units.
REGEN HEATER BANK
The dehumidier uses a ceramic PTC type regen heater. PTC (Positive
Temperature Coecient) heaters are based on a semi-conductor that changes
resistance as it becomes hotter. The semi-conductor is designed so that it’s
resistance rises rapidly at a predesignated temperature, thus it maintains this
temperature across a wide range of operational conditions.
This characteristic means that the heating element can never over heat to
hazardous temperatures, even if the regen airow is completely blocked.
FAN SYSTEM
The dehumidier uses a patented "RadiCal" backward curved fan unit, this is a
highly eective yet quiet system. It is designed to give a good balance of airows
for both ‘Process’ and ‘Regen’ airows.
HOW IT WORKS WORKS (2) |

6
The dehumidier is designed only for indoor use however, it can be placed inside or outside the room to be dried.
INTERNAL POSITIONING
When positioning the unit inside the room, place it centrally, ensuring inlet and outlet ducts are clear of
obstruction.
If required, ducts can be connected to the outlet and/or inlet to direct the drying to specic areas.
The Wet-Air-Out MUST be ducted outside the room.
EXTERNAL POSITIONING
When positioning the unit outside the room, connect ducting to the outlet to direct the dry air stream into the
room to be dried.
Optionally, the inlet may also be ducted to the room with the unit to give a re-circulation eect. In this case
however, because the unit uses a portion of the inlet air for regeneration, provision must be made in the inlet
duct to also draw air form outside the room.
Note:
As the Wet-Air-Out discharge is warm and very humid ensure it is directed where it will have no adverse eect
on the immediate environment.
All ducting lengths should be kept to a minimum —longer lengths will reduce performance.
The Wet-Air-Out is warm and very humid, when a duct is attached, condensation may form on the inside of the
duct. This duct should slope downwards away may from the unit to prevent any condensation running back
into the unit.
POSITIONING|

7
UK
STAND-ALONE OPERATION
Connect the unit to a suitable mains supply.
Ensure the Remote Humidistat switch is set in the ‘OFF’ position.
Switch the Power switch to the ‘ON’ (I) position.
The fan will start and the Ammeter reading will rise. The ammeter indicates the current taken by the PTC
heater bank. Its reading will depend on the ‘Process’ air temperature and the ‘Regen’ airow. Typically, it will
indicate between 4 and 6 amps, this will reduce if the airow is low or the ‘Process’ air temperature is high.
REMOTE OPERATION
For remote operation it is necessary to connect a switch or humidistat via the ‘Remote Humidistat Connector’
which can be accessed by removing the dust cap. A connection plug is available on request.
ATTENTION: The remote connector is mains voltage!
The remote switch/humidistat should be connected between pins 1 and 3.
The earth pin is connected to ground and can be used if required (see wiring diagram).
The Remote Humidistat switch should be set to the ‘ON’ position.
The unit will now operate according to the state of the remote switch/humidistat.
AIR FILTER
The unit has an inlet air lter, this should be checked periodically and if necessary cleaned. It can be cleaned
with a vacuum cleaner or washed in mild detergent.
ATTENTION:
Do not run the unit without a lter tted as dust will impair the performance of the Desiccant Rotor.
OPERATION|

8
CONTROLS|
The controls are positioned on the front of the
unit next to the air outlet. They are:
• Power Switch
• Ammeter
• Hour Meter
• Remote Humidistat Switch
• Remote Humidistat Connector
If the dehumidier does not operate:
• Make sure the unit is plugged in.
• Check the fuse
• Check the remote humidistat setting
• Ensure the humidistat (if tted) is turned on
Low Airow:
• Check inlet air lter
• Check inlet/outlets not obstructed
• Check ductwork (if tted) is not obstructed
• Check voltage level
• Check fan is working
If the unit is noisy:
• Check fan operation
• Check rotor drive
• Check for loose screws
Low Dehumidifying Eect:
• Check airows
• Check Amps reading
• Check rotor is turning
Low Amps Reading:
• Check Regen airow
• Check Over-Heat Protector
• Check Heater bank
Rotor Not Turning
• Check belt tension
• Check drive-motor operation
• Check rotor alignment
TROUBLESHOOTING|
10
5
A
O
I
OFF
ON
OFF
ON
POWER Remote
Humidistat
DANGER
110V

9
UK
MAINTENANCE|
ATTENTION
• Maintenance should only be carried out by qualied personnel
• Unit should be disconnected from mains before removing covers
• If unit has just been running, the heater bank may still be hot
DESICCANT ROTOR
The desiccant rotor is maintenance free, however, if it becomes blocked with dust (e.g. if it has been running
without inlet air lter) it can be cleaned by vacuum cleaner or low pressure compressed air.
HEATER BANK
The PTC heater bank is maintenance free however, if it becomes blocked with dust (e.g. if it has been running
without inlet air lter) it can be cleaned by vacuum cleaner or low pressure compressed air.
OVER-HEAT PROTECTOR
In the event of total airow loss, the over-heat protector will operate. If this happens
it will need to be manually re-set after the airow is restored.
To reset, push the red button (R) down.
DESICCANT ROTOR DRIVE
The desiccant rotor is driven by a geared motor via a toothed belt. The rotation
speed is approximately 20 revolutions per hour. It can be seen turning during
operation through the air outlet duct. If it appears to be slow or sticking, the belt can
be re-tensioned using the 4 mounting screws at ‘‘A’’.
NOTE: Do NOT over-tension
the belt. After tensioning it
should have movement as
shown in the image.

10
DH3511
Typical extraction @ 32 C 90% relative humidity 45 L/ day
Typical extraction @ 26 C 60% relative humidity 35 L/ day
Airflow (Dry Air Out) 400 m3/hr
Airflow (Wet Air Out) 125 m3/hr
Mains 110V ~ 1 phase • 50Hz
Current 6.5A
Power 1500W
Operating temperature range -20 C — 40 C
Noise level 58dB
IP rating IPx2
Dimensions l x w x h cm 56.0 x 35.2 x 34.5
Weight net kg 20.5
TECHNICAL DATA|
Subject to modications without prior notice.
Available from your supplier
• Flexible ducting Ø80mm, 3 or 6m
• Flexible ducting Ø125mm, 3 or 6m
• High voltage humidistat – 5m connecting cable and standard screw plug connected
• Reticulated foam lter – pack of 3
OPTIONAL PARTS|
Design
Great British
Made in PRC

11
UK
1
3
2
TERMINAL
BLOCK
MAINS
LEAD
MAINS
SWITCH
REMOTE
HUMIDISTAT
SWITCH
HOUR
METER AMMETER
REMOTE
CONNECTOR
E
HEATER
BANK
PROCESS
FAN
CAPACITOR
L
N
E
OHP
ROTOR
DRIVE
BLU
BLK
BRN
G/Y
REGEN
FAN
CAPACITOR
BLU
BLK
BRN
G/Y
REGEN FAN
PROCESS FAN
REMOTE
CONNECTOR
L
MAIN
SWITCH
N
M
PROCESS
FAN
ROTOR
DRIVER
HEATER
BANK
REMOTE
HUMIDISTAT
SWITCH
1
3
REMOTE SWITCH /
HUMIDISTAT
(OPTIONAL)
FAN
CAPACITOR
OVERHEAT
PROTECTION
(MANUAL RESET)
HOUR
METER
E
E
REGEN
FAN
AMMETER
FAN
CAPACITOR
MM
WIRING DIAGRAM AND SCHEMATIC, DIMENSIONS |
PROCESS AIR OUT
Ø 125mm
REGEN AIR IN
Ø 80mm
PROCESS AIR IN
Ø 125mm
WET AIR OUT
Ø 80mm
35.2mm
34.5mm
56.0mm

Subject to modications
Ecor Pro
Ampèrestraat 18J
3861 NC Nijkerk
The Netherlands
Tel [phone]
www.ecorpro.eu
[email protected]