CorroVenta HomeVision Pro User manual

HOMEVISION® PRO
Control System for VentoVind™ and crawl space
dehumidifiers CTR STD-TT and CTR 300TT2
USER MANUAL

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2021.02
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Contents
Area of use..................................................................................................................................................3
Manufacture directive ................................................................................................................................4
Safety information ......................................................................................................................................5
Relative humidity and its impact on materials ...........................................................................................6
Controlling humidity ...................................................................................................................................6
Fixed RH regulation.....................................................................................................................................6
Mould index regulation...............................................................................................................................7
Delivery check.............................................................................................................................................8
Product overview........................................................................................................................................9
Control unit.................................................................................................................................................9
Control unit dehumidifier ...........................................................................................................................9
Control unit VentoVind™ ..........................................................................................................................10
Installation ................................................................................................................................................11
Installation of control unit and connection of control panel for crawl spaces.........................................11
Installation of control unit and connection of control panel for VentoVind™ .........................................12
Installation of control panel......................................................................................................................15
HomeVision® Pro ......................................................................................................................................16
Status view Crawl space............................................................................................................................18
Status view VentoVind™...........................................................................................................................19
Overview view...........................................................................................................................................20
Setup view.................................................................................................................................................21
Statistics view............................................................................................................................................21
Set date and time......................................................................................................................................22
Connecting a new unit..............................................................................................................................23
Remove the USB stick ...............................................................................................................................24
Selecting language ....................................................................................................................................25
Service status –Reset service counter .....................................................................................................25
System status............................................................................................................................................26
Diagnostics –Test of radio connection.....................................................................................................27
Diagnostics –Test of crawl space dehumidifier........................................................................................28
Diagnostics –VentoVind™, See Sensor data.............................................................................................29
Diagnostics –VentoVind™, Fan test .........................................................................................................30
Diagnostics –VentoVind™, Damper test ..................................................................................................31
See overview of settings for all units, Crawl space...................................................................................32
See configuration overview for all units, VentoVind™ .............................................................................33

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Reconfigure unit (by regulation parameters), Crawl space......................................................................34
Reconfigure unit (by regulation parameters), VentoVind™ .....................................................................35
Resetting to factory default......................................................................................................................37
Remove unit..............................................................................................................................................38
Alarms and service reminders ..................................................................................................................39
Interpreting the USB log ...........................................................................................................................41
Maintenance and service..........................................................................................................................42
Troubleshooting........................................................................................................................................43
Technical data...........................................................................................................................................44

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Area of use
HomeVision® Pro has been developed and designed for wireless control and monitoring of
Corroventa CTR STD-TT and CTR 300TT2 crawl space dehumidifiers as well as VentoVind™, adaptive
ventilation of cold attic spaces.
There are two versions of control unit, one for crawl spaces and one for VentoVind™ but the control
panel is common and compatible to both.
For easy monitoring, the control panel presents operating statistics in the form of graphics e.g.
average temperature and average relative humidity. It also shows any operational alarms and
service reminders such as filter replacement. The control panel also stores operational data on a
USB stick in a format which can be read in Excel or corresponding software.
Each control panel can connect up to 8 control units so even if the property requires more
than one dehumidifier or perhaps both crawl space dehumidification and VentoVind™, all
control and monitoring occurs from the same place, as long as there is sufficient radio
reception.
•Monitoring crawl space climate, temperature and humidity
•Monitoring and controlling VentoVind™
•Operational indicators and operational alarms
•Easy to install –wireless control panel
•Service reminders
•Graphic display with simple user interface
•Expandable –the control panel can control up to eight control units.

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Manufacture directive
HomeVision® Pro has been electrical safety tested and EMC tested. HomeVision® is CE labelled.
Disclaimer
• Incorrect installation and/or incorrect handling can cause property damage as well as injury.
• The manufacturer assumes no liability for damage arising as a result of failing to follow these
instructions, not using the machine as intended. Such damage is not covered by the
warranty.
• The warranty applies to damage to the machine caused by material or manufacturing
defects and does not cover consequential failure.
• The warranty does not apply to consumables or to normal wear.
• It is the responsibility of the purchaser to inspect the goods upon delivery and to ensure its
function according to the instructions in the manual during use.
• Changes or modifications to the machine must not be performed without written
permission from Corroventa Avfuktning AB.
• The product, technical data and/or installation and operating instructions are subject
to change without notice.
• These user instructions contain information protected by copyright laws. No part of this
document may be reproduced, stored in an information storage system or transmitted in
any way or by any means without Corroventa AB's written consent.
Any comments regarding the content of this document must be sent to: Corroventa
Avfuktning AB Tel: [phone]
Mekanikervägen 3 E‐mail [e-mail]
SE-564 35 Bankeryd, Sweden

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Safety information
This device is not intended for use by persons with reduced physical, mental or sensory impairments
which affect their ability to operate or understand the equipment nor other persons lacking the
necessary skills or experience, unless supervised or instructed by another person with responsibility
for their safety.
Children may only use the device under the supervision of an adult to ensure that the device is
not used as a toy.
Electrical installations carried out in connection with dehumidifier and HomeVision® installation
must be done by a qualified electrician in accordance with local and national regulations.
1. Read and observe the safety information in the manual for the dehumidifier to be installed
and/or used.
2. Incorrect settings of HomeVision® or VentoVind™ control system can cause damage to the property
and/or the equipment as well as excessive energy consumption.
3. HomeVision Control unit for crawl space dehumidifier is connected by cable to the dehumidifier and is
placed in the crawl space at approximately half the height of the space in such a way that it is not
affected by:
a. Dry air from the dehumidifier.
b. Wet air from the dehumidifier.
c. Radiation from surfaces hotter than the ambient air.
d. Radiation from surfaces colder than the ambient air.
4. VentoVind™ control unit is connected to grounded, 230V socket with 10A fuse, maximum 16A
fuse.
5. VentoVind™ sensors are installed as follows:
a. The indoor sensor is positioned at approximately half the height of the attic space and
approximately in the middle of the space so that its measurement values are
representative of the space.
b. The outdoor sensor is positioned on the gable end pointing north protected from sunlight and
rain.
6. Position the control panel:
a. in a hall or similar area that is usually frequented so that operational alarms from the
system are quickly detected.
b. so that small children cannot access it, thus preventing unintentional setting changes.
7. Since the aim is to permanently supply the control panel via the supplied battery eliminator, do not
leave batteries in the control panel as many battery types and brands have a tendency to leak as
they age.
8. Using electrical equipment in very damp or wet conditions can be dangerous. Do not operate the
dehumidifier if it or the Control unit is standing in water.
9. Water must not come into contact with the dehumidifier's or HomeVision™ electrical components. If
it does, ensure that they are dried thoroughly before the system is used again.
10. It is recommended that the wall socket that supplies the dehumidifier and thus also the control unit is
protected by a circuit breaker to minimise the risk of electric shock.
11. Do not damage the cables. They must nor run through water or over sharp edges.
12. HomeVision® and VentoVind™ must not be used with accessories other than those described in
this manual or approved by Corroventa Avfuktning AB.
Contact the supplier of this dehumidifier for further advice on the safety and use of the product.

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Relative humidity and its impact on materials
All air contains a greater or less amount of moisture but we can’t see it with the naked eye until it
appears in the form of small water drops against a cold surface of metal or glass. However, before it
is visible, moisture is already causing problems by affecting materials and manufacturing processes,
causing corrosion and growth of micro-organisms. In Scandinavia, in particular, one must always
assume that it is humid due to large areas of water in the thousands of lakes and surrounding seas.
Air humidity is measured and is often given in relative humidity (%RH), which is a measure of how
much water the air contains in relation to how much it can maximally contain at a given
temperature. The higher the temperature, the more water the air can hold but it is the relative
humidity which is calculated, and which must be controlled.
At 100% RH the air is saturated and the moisture falls in the form of small water droplets. Steel
corrodes at 60% RH and at 70% RH there is a risk of mould. A rule of thumb is that 50% RH is a good
climate for most materials but here in Scandinavia, it is rarely so low. The annual average value in
most places is instead around 80% RH and can be equally high in both summer and winter.
Controlling humidity
Installing the dehumidifier according to the instructions and manual, provides the conditions for
establishing and maintaining a climate that prevents rot, mould and bad odours in the space.
HomeVision® with its wireless control panel offers easy and convenient monitoring of the climate
from the accommodation and allows the user to select between Fixed RH regulation and MGI
Regulation (mould index regulation).
Fixed RH regulation
With the regulation principle Fixed RH, a setpoint value for the humidity is set, a value to control
around. Furthermore, an upper and a lower hysteresis are set as well as an alarm limit that defines
the alarm level at which, if reached, an alarm appears on the control panel. The chart below is not to
scale, it has the sole purpose of clarifying the principle and parameters.
Alarm level
Setpoint value
Temperature
%-
RH
Dehumidification on
Alarm +%RH
Hysteresis Upper/Lower:
Dehumidification off

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To help understand this principle here is an example that can be studied in parallel with the chart:
Setpoint, %RH: 65%
Hysteresis Upper/Lower: + 4%, -4%
Activation: Setpoint value + Hysteresis Upper = 65% +
4% = 69% Off: Setpoint value + Hysteresis Lower = 65% -
4% = 61%
Alarm, +RH: 10% Added to the activation level to give alarm level.
Alarm level = Setpoint value + Hysteresis Upper + Alarm =
65% + 4% + 10 % = 79%
As seen in the example , the setpoint value must not be mixed up with the highest permitted level
because the setpoint value exceeds the corresponding Hysteresis Upper before the dehumidifier is
activated. At high moisture load, relative humidity can increase slightly before the dehumidifier
makes an impact and the relative humidity in the crawl space begins to drop. The result of this is
that the setpoint value, if not entirely accurate, can be seen as an upper limit for the humidity's
average value over a longer period, and for this there must be a margin, greater than the upper
hysteresis, for the humidity at which damage occurs.
The reason the user is given the option to influence hysteresis is that it must be possible to adjust
the system for optimum operating profile in any given location. Too narrow an interval, the range
given by the upper and lower hysteresis provides many starts and stops of the dehumidifier and
therefore an increase in equipment wear. Too great a range means that, at each activation, the
system drives down the humidity unnecessarily low resulting in increased energy consumption.
Mould index regulation
HomeVision® Pro permits, in addition to traditional, fixed, regulation of the relative humidity,
application of mould index regulation, MGI regulation. This regulation method uses the fact that the
mould growth, in addition to the humidity is also temperature dependent. At lower temperatures,
higher humidity can be tolerated without risking mould growth and the positive result of this is of
course the potential to save energy.
The regulation principle, as with the energy saving aim, implemented in HomeVision® Pro can be
clarified with the help of the chart below. The chart is not to scale but is intended only to clarify
the principle and actual parameters.
%-RH
Dehumidification on
Mould index curve
Alarm, +%RH
Safety margin
Dehumidification off
Temperature
RH-MGI
Hysteresis Lower
Hysteresis Upper

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Actual MI = The humidity that forms the lower limits of mould growth for the actual
temperature.
The upper curve, the mould index curve, is programmed in HomeVision® and is therefore not
something that is affected by user settings. The user is asked instead to specify the desired safety
margin, upper and lower hysteresis and alarm limit whose meanings are explained using the
following example.
Safety margin, %RH:
‐15%
Activation:
Actual MI–Safety margin + Hysteresis Upper =
Hysteresis Upper/Lower:
+ 4%, ‐4%
= Actual MI –15% + 4%
Off:
Actual MI –Safety margin –Hysteresis Lower =
= Actual MI–15% - 4%
Alarm, +%RH:
10%
Added to the activation level to give alarm
level. Alarm level:
Actual MI –Safety margin + Hysteresis Upper + Alarm=
= Actual MI –15% + 4% + 10 %
The principles are recognised from Fast RH regulation, but instead of a constant setpoint the
safety margin is determined against the mould index. When it comes to hysteresis and the
alarm, these work in the same way as for Fixed RH regulation.
As the reader will certainly have established, the relative humidity can be allowed to rise slightly
higher in the lower temperature range,with the support of the mould index, and thus provide an
energy saving. At higher temperatures, both the fixed and mould index regulation methods overlap
and thus the power consumption is the same.
Delivery check
HomeVision® for crawl spaces is supplied with the following parts in the package:
Control unit for connection to CTR STD-TT
or CTR 300TT2
1 x
Control panel with USB stick
1 x
Battery eliminator for control panel
1 x
Batteries for control panel, AAA cells*
2 x
Manual
1 x
HomeVision® for VentoVind™ is supplied with the following parts in the package:
VentoVind™ Control unit
1 x
Control panel with USB stick
1 x
Battery eliminator for control panel
1 x
Batteries for control panel, AAA cells*
2 x
Manual
1 x
Outdoor sensor
1 x
Indoor sensor
1 x
*) To use the installed batteries, the plastic protection strip must be removed so that the battery terminals

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come into contact with the panel. The batteries are intended for use during installation. During normal
operation, the control panel must be powered via the battery eliminator and the batteries removed from
the control panel to prevent leakage, which can occur in ageing batteries.
Product overview
Control unit
Display
window
2 x Batteries, AAA cells
USB stick
Connection for
AC adapter.
Control unit dehumidifier
The control unit is installed with the sensor downwards.
Sensor
Remove wall mounting downwards
Protective cover
Press the arrow symbol
down and slide the cover
to the right