CorroVenta HomeVision Pro User manual

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
1 (30)
User Manual
HomeVision®
Pro/Lite

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
2 (30)
Table of Contents
Intended use........................................................................................................................................ 3
Manufacturing Directive ..................................................................................................................... 3
Safety Information............................................................................................................................... 5
Relative humidity and its effect on substances................................................................................... 6
Control of crawl space humidity ......................................................................................................... 6
Fixed RH control .............................................................................................................................. 6
Mould Growth Index RH control ..................................................................................................... 8
Delivery inspection............................................................................................................................ 10
Product Overview.............................................................................................................................. 11
Installation......................................................................................................................................... 12
Installation of Control Unit............................................................................................................ 12
Installation of Control Panel.......................................................................................................... 13
To use HomeVision® Pro ................................................................................................................... 14
Default view and setup menus, Pro .............................................................................................. 15
To use HomeVision® Lite................................................................................................................... 20
Default view and setup menus, Lite.............................................................................................. 21
Alarms and service reminders, Pro and Lite...................................................................................... 24
How to read the log, PRO.............................................................................................................. 26
Service and maintenance .................................................................................................................. 28
Fault finding....................................................................................................................................... 29
Technical data ................................................................................................................................... 30

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
3 (30)
User Manual HomeVision®
Intended use
HomeVision® is developed and intended for wireless control and supervision of Corroventa CTR STD-
TT and CTR 300TT2 crawl space dehumidifiers.
HomeVision® consists of a Control Unit and a wireless Control Panel. The Control Unit is equipped
with built-in temperature and humidity sensor and is mounted in the crawl space and connected to
the dehumidifier. Through use of the Control Panel mounted in the in the apartment the system can
be monitored and its settings adjusted. The Control Panel also displays alarms in case of failures as
well as service reminders for changing filter.
Both versions, Lite and Pro, store log data on USB-stick, supporting service technicians’ in their
installation follow-up and their trouble shooting. The Pro variant also stores a log file in a user
readable format that homeowner himself can use for his own follow-up and analysis.
The Pro version, in addition to all the features of the Lite, also supports Mould Growth Index based
control which for certain installations and circumstances has the potential to lower the energy
consumption even further. Furthermore, the Pro version also has graphic presentation of hours of
operation, average temperature and average humidity.
Features:
• Control and supervision of crawls
space climate, temperature and
relative humidity
• Logging of operation and climate data on USB-
stick – available for users of the Pro version
• Operation indicators and alarms
• Easy to install – wireless Control Panel
• Service reminders
• Graphical display with an easy interface
Manufacturing Directive
HomeVision® Pro and Lite are tested in accordance with LVD and EMC directives. HomeVision® is CE
approved.
Waiver of Liability
•Faulty, incorrect installations and/or incorrect use can cause damage to property and human
injury.
•The manufacturer assumes no responsibility or liability for damages or injuries caused by
non-compliance with the instructions herein, use for other purposes than the intended, or
failure to observe its warnings. Such damage, injuries or liabilities are not covered by the
product warranty.
•The product warranty does not cover consumables or normal wear and tear.
•It is the responsibility of the buyer to inspect the product at time of delivery and before use
to ensure its good function. The product warranty does not cover damage resulting from use
of faulty products.
•Changes or modifications to the equipment must not be made without written consent by
Corroventa Avfuktning AB.
•The product, technical data and/or installation and operation instructions can be changed
without prior notice.
•This manual contains information that is protected by the Intellectual Property laws. No part
of this manual may be copied, stored in an information system or transferred in any form or
in any way without the written consent of Corroventa Avfuktning AB.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
4 (30)
Any comments on the contents of this document shall be sent or addressed to:
Corroventa Avfuktning AB Tel [phone]
Mekanikervägen 3 Fax [phone]
564 35 Bankeryd E-post [email protected]
SWEDEN

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
5 (30)
Safety Information
This equipment is not intended to be used by individuals with physical or mental disabilities impeding
their operation or understanding of it or by individuals lacking required knowledge or experience
unless they are supervised and instructed by another person with responsibility for their safety.
Children must only use this equipment under supervision of an adult to ensure that it is not used as a
toy, something that it is not designed for.
Electrical installations made in connection with the installation of the dehumidifier or the
HomeVision® shall be made by authorized personnel in accordance with local and national
regulations.
1. Read and observe the Safety Information in the user manual of the dehumidifer that is to be
installed and/or used.
2. Incorrect settings in HomeVision® can result in damage to property and/or the equipment as
well as too high energy consumption.
3. The Control Unit is connected to the dehumidifier with its cable and is mounted in the crawls
space at approximately half the height in such a way that it is not affected by:
a. The dry air from the dehumidifier.
b. The wet air from the dehumidifier.
c. Radiation from surfaces warmer than ambient air.
d. Radiation from surfaces colder than ambient air.
4. Place and mount the Control Panel:
a. In hallway or similar space where it is often passed and seen so that any appearing
alarm is spotted shortly.
b. Beyond the reach of small children in order to avoid unintentional changes to system
settings.
5. As the Control Panel is intended to be continuously powered through included AC/DC
adapter, do not leave batteries in the Control Panel as many makes and types have a
tendency to leak as they age.
6. To use electrical equipment i a very humid or wet environment can be dangerous. Do not use
or operate the dehumidifier if it, or its Control Unit are in water.
7. Water must not come in contact with or reach the electrical components of the dehumidifier
or the HomeVision®. If this still happens, make sure they are dry before the system is
powered and used again.
8. It is recommended that the power socket used to supply the dehumidifier is protected
through a residual current device / ground fault circuit interrupter.
9. Be careful not to damage the cables. They must not be submerged in water or pass sharp
edges.
10. HomeVision® must not be used with any other accessories than those presented in this
manual or that are explicitly approved by Corroventa Avfuktning AB.
For further advice on product safety and use, please contact the supplier.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
6 (30)
Relative humidity and its effect on substances
All air contains more or less moisture but the naked eye cannot see it until it condensates in small
droplets on for instance a metal or glass surface. Already before it is visible however, the moisture
affects substances and production processes, causes corrosion and micro organism growth. In the
Nordic climate in particular, one must always count on ambient humidity due to the large water
surfaces of the many thousands of lakes and of the surrounding sea.
Air humidity is measured and referred to in terms of relative humidity (%RH) which is a measure how
much water it contains relative how much it can contain at given temperature. The higher the
temperature, the more water the air can contain but it is still the Relative Humidity that counts and
that needs to be controlled.
At RH 100% the air is saturated – there is fog and the moisture condensates in small droplets.
Already at RH 60% steel corrodes and at 70% there is a risk for mould growth. As a rule of thumb, RH
50% is a good climate for most substances but in the Nordic countries the humidity is rarely that low.
The yearly average for most places is closer to 80% and it can be as high both summer and winter.
Control of crawl space humidity
When a dehumidifier is installed in the crawl space in accordance with instructions in manual, vents,
cracks and other openings are sealed and the ground is covered with non-aging plastic foil, all
prerequisites are there for achieving and sustaining a good climate where rot, mould and bad smell
are prevented. As an extra prevention, downpipes that end by the foundation wall should be
modified so that the water is lead away from the building and do not leak into the crawl space.
HomeVision® with its wireless Control Panel offers easy and convenient monitoring of the crawls
space environment and allows the user to set desired operating parameters for Fixed RH control and,
for Pro also Mould Growth Index RH control.
Fixed RH control
With RH control a setpoint is selected, a relative humidity one wants the system to use as basis for its
dehumidification. Furthermore, one defines an upper and a lower hysteresis as well as an alarm limit,
the latter defining an alarm level at which, should it ever be reached, an automatic alert is triggered
on the Control Panel. The diagram is not to scale but only intended as an illustration of the principle
presented and its different parameters.
%
-
RH
Temperature
Hysteresis Upper
Hysteresis Lower
Dehumidification On
Dehumidification Off
Alarm +%RH
Alarm level
Setpoint

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
7 (30)
To further facilitate the understanding of the principal, the example below presents all the
parameters and explains how they are applied.
As can be seen from the example above, the setpoint shall not be seen as, or confused with, a
maximum level as it is exceeded with Hysteresis Upper before the dehumidifier is even activated. At
times of high moisture load, the relative humidity can climb even further before it starts declining.
Consequently, the setpoint is, if not perfectly correct, more to be seen as an upper limit for the
average relative humidity and therefore there must always be a margin bigger than the Hysteresis
Upper between the setpoint and the level at which damage arises.
The reason for HomeVision® allowing the user to set the hysteresis is to allow for each and every
installation to be optimized. A too narrow span results in many starts and stops of the dehumidifier
with increased wear on the equipment. A too wide span normally results in the system drying the
crawls space to unnecessarily low levels which consumes more energy than necessary.
Setpoint, %RH: 65%
Activation: Setpoint+Hysteresis Upper = 65% + 4% = 69%
Deactivation: Setpoint +Hysteresis Lower = 65% - 4% = 61%
Hysteresis Upper/Lower: + 4%, -4%
Alarm, +%RH: 10% Added to the activation level to give the Alarm Level.
Alarm Level = Setpoint + Hysteresis Upper + Alarm =
65% + 4% + 10 % = 79%

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
8 (30)
Mould Growth Index RH control
In addition to Fixed RH control, HomeVision® Pro also implements Mould Growth Index, MGI,
control. The control mechanism makes use of the fact that mould growth, in addition to being
humidity dependant also is temperature dependant. At lower temperatures, higher humidity can be
tolerated without causing mould growth, the positive side of which is of course the potential to save
further energy.
The MGI control principle, as explained implemented in HomeVision® Pro for its energy saving
potential, is visualized in the schematic diagram below. The diagram is not to scale but intended only
to explain and clarify the principle and its parameters.
The upper curve, the Mould Growth Index curve, is programmed in HomeVision® Pro and is not
affected by user settings. The user is instead allowed to set RH safety margin, Hysteresis Upper and
Lower and alarm limit, the meanings of which are explained by the following example.
The principals are familiar to those acquainted the Fixed RH control but instead of a setpoint a safety
margin is defined. As with the Fixed setpoint, the RH safety margin is exceed by the Hysteresis Upper
before the dehumidifier is activated. The RH safety margin does thus not constitute a maximum
level. As for Hysteresis and the Alarm, these function the same way with MGI as with Fixed.
RH safety margin, %RH: -15% Activation:
Current MGI– RH safety margin + Hysteresis Upper =
= Current MGI – 15% + 4%
Hysteresis Upper/Lower: + 4%, -4% Deactivation:
Current MGI – RH safety margin – Hysteresis Lower =
= Current MGI– 15% - 4%
Alarm, +%RH: 10% Added to activation to level to give Alarm level.
Alarm level:
Current MGI – RH safety margin + Hysteresis Upper + Alarm=
= Current MGI – 15% + 4% + 10 %
Current MGI = The relative humidity that for current temperature is the lower limit for mould growth.
%
-
RH
Temperature
Mould Growth Index curve
RH
-
MGI
Safety Margin
-
Hysteresis Upper
Hysteresis Lower
Dehumidification Off
Dehumification On
Alarm, +%RH

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
9 (30)
As the reader has understood already, it is in the lower temperature interval that the relative
humidity supported by Mould Growth Index can be allowed to rise somewhat higher and thus
achieve an energy saving. For higher temperatures, the two control modes coincide and the energy
consumption is thus identical.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
10 (30)
Delivery inspection
HomeVision® is delivered with the following items included:
Control Unit with cable connection to CTR
STD-TT or CTR 300TT2 dehumidifier
1 pc
Control Panel with USB memory stick
1 pc
Power adaptor for Control Panel
1 pc
Batteries for Control Panel, AAA cells
2 pcs
User Manual
1 pc
*) Please note that the batteries are already mounted in the Control Panel. To use them, the isolating
piece of plastic between the battery pole and the contact spring must be removed. The batteries are
intended for use during installation of the equipment. For normal use, the Control Panel shall be
powered through the power adaptor.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
11 (30)
Product Overview
Control Panel
The battery compartment is opened by pushing by the arrow symbol and simultaneously sliding the
lid in the arrow direction as shown in the picture below.
Control Unit
Control unit is mounted with sensor downwards.
Push arrow symbol and
slide the lid to the right
Batteries, AAA cells, 2pcs
Connector for
power adaptor
USB memory stick
Display
Three push buttons
Temperature and humidity sensor
Cable for connection to
dehumidifier

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
12 (30)
Installation
Installation of Control Unit
When installing the Control Unit, prepare the Control Panel by removing the battery protection and
bring it to the crawl space.
1. Mount the Control Unit where its cable can reach the dehumidifier and where its
measurements of temperature and relative humidity will be representative of the ambient
crawl space environment, securing that:
•The unit is at approaximately half the height of the crawl space.
•The unit is not directly affected by the dry air from the dehumidifier.
•The unit is not directly affected by the wet air from the dehumidifier.
•The unit is not affected by radiation from heat sources/surfaces hotter than ambient air.
•The unit is not affected by radiation from surfaces colder than ambient air.
The Control Unit is mounted in bracket, part of the installation kit (Monteringskit TT Multi)
with the sensor downwards. The bracket is preferably fixed as depicted below.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
13 (30)
2. Connect the Control Unit cable to the dehumidifier.
3. Provided that the dehumidifier installation is completed, connect its power cable. Take the
Control Panel and:
a) In the default view,push <Setup>.
b) When the Adminstration view to the right is
presented, push <Change>.
c) Push down arrow and verify that the “Connect
new unit ” alternative “Standard” is selected.
d) Push <Select> and when ”Standard” is visible,
push <Save>.
The display now shows the text ”Attempting to pair up…” and as soon as connection is
established “Pairing successful” is presented which is acknowledged by pushing <OK>.
The Control Panel returns to the default view where status indications, temperature and
relative humidity are presented. It may take up to 45 seconds before current status and
values are presented.
In the default view there is also an indication of the radio signal quality. The indication is
based on how many data packages are received at their first transmission why the
quality normally builds up over time. It always shows level one in the beginning and is
therefore not to be compared with the signal strength indication of a cellular phone.
Note:When the Control Unit is powered, it is open to pairing for two minutes only.
Therefore,as a first measure when failing to pair the system, restart the Control Unit and
try again.
Installation of Control Panel
When the Control Unit is installed and radio connection between that and the Control Panel is
established, proceed as follows:
1. Select position for the Control Panel where there is power outlet within reach of the power
adaptor cable and preferably where any alarm would be noticed as soon as possible (the
screen back light starts to flash when alarms are presented). Furthermore, if there are small
children in the household, the Control Panel should be placed beyond their reach.
Put the Control Panel at the intended position and leave it there for a couple of minutes to
let the signal quality indication reflect current conditions. Verify that at the indication is at
level two or higher.
2. Detach the wall bracket from the Control Panel by pushing it downwards. Hold the bracket to
the wall at the intended position and mark the position of the three holes to be drilled. Drill
the holes and insert the wall plugs. Fix the bracket to the wall using the three screws.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
14 (30)
3. Remove the batteries from the Control Panel and connect the power adaptor. (The Control
Panel, if correctly paired, will automatically reconnect the Control Unit after power down.)
4. Mount the Control Panel on the wall bracket by holding it over the bracket and pulling it
downwards. Connect the power adaptor to the power outlet.
To use HomeVision® Pro
HomeVision® has an easily understood user interface with a display and three push buttons. The
push buttons are so called soft buttons meaning that their respective functions vary with the menus
to make the maneuvering as simple as possible.
The menus are all depicted below except for automatic alarms and reminder which are present in
separate chapter. From the default view, the menus are reached through the center setup button.
The up and the down arrows in the default view are used to present operation, temperature and
relative humidity statistics. In the statistics views, the first column from the left is the current
calendar month, followed by the last completed calendar month and so forth.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
15 (30)
Default view and setup menus, Pro
Default view
In the default view, current crawl space relative
humidity and temperature are presented. The
indications in the lower part of the screen show, from
left:
•Dehumidification, if the dehumidifier is
currently active or not. When active, the water
level in the droplet is moving and the outer
circle rotating.
•Fan – if the fan is currently active or not. When
active the fan wheel and the outer circle are
both rotating.
•Signal quality, how good the connection with
the Control Unit is. The higher the indication,
the better quality. When connection is lost, the
entire symbol flashes.
Please note that the signal quality reflects how
many data packages are correctly received in
their first transmission. The level normally
builds up over time and may then vary slightly.
Standard paired systems automatically
reconnect after power reset. When the Control
Unit has been powered down it takes
approximately three minutes for the system to
reestablish connection.
Administration menu
This menu is accessed from the default view by
pushing <Setup>.
To change parameters, push <Change>, use down
arrow to select parameter to change and push
<Select>.
Select parameter value of choice using the arrows and
then push <Save>.
Date is in the format YY-MM-DD.
”Connect new unit”is normally only used at time of
installation. It shall be set to Standard which makes the
system automatically reconnect after power reset. The
Service alternative is only for use by service
technicians, establishing at temporary connection.
Service paired systems do not reconnect after power
reset. The Control Unit only allows pairing of new
Control Panel for two minutes after restart.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
16 (30)
”Remove USB stick”prepares the Control Panel for
removal of the USB stick by temporarily stopping the
logging process, preventing the files from being
corrupted. Always use this function when removing
the USB.
Note: The Pro version stores a user readable log file in
CSV (comma separated) format on the USB stick. The
file can be analyzed and studied with for instance
Microsoft Excel. Always make a copy of the log file to a
different location and then use that file, not the
original in order to prevent the file from being
corrupted. Put the USB-stick back in the Control Panel
as soon as the copy is made in order not to lose any log
data.
”Select language”allows for the user to select Control
Panel language.
Mode and reset menu
Accessed from the default view by pushing <Setup>
and then down arrow.
To change parameters, push <Change>, use down
arrow to select parameter to change and push
<Select>.
Select parameter value of choice using the arrows and
then push <Save>.
”Continuous ventilation”determines whether the fan
shall operate continuously or only when the
dehumidifier is active. Normally it is recommended to
have continuous ventilation, particularly if there are
problems with radon or bad smell from the crawl
space. If no such problems exist, deactivation of
continuous fan can be considered in order to save
energy.
”RH Control Mode”allows for selection of either Fixed
control with setpoint RH% or Mould Growth Index
control allowing the maximum relative humidity vary
with the temperature. Both these modes and
principles are explained in previous chapters of this
manual.
”Reset service indicator” allows for reset of the built-in
service timer that provides a yearly service reminder.
Normally this function is never used as the reset is
automatic when performed service is acknowledged
through the service reminder screen.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
17 (30)
”Reset all settings” makes the system delete all user
settings and return to factory defaults. Factory default
is control mode Fixed with setpoint 65%RH and with
continuous ventilation.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
18 (30)
RH Control Mode - Fixed
Accessible from default view by pushing <Setup> and
then twice down arrow provided control mode Fixed is
selected in the mode and reset menu.
To change parameters, push <Change>, use down
arrow to select parameter to change and push
<Select>.
Select parameter value of choice using the arrows and
then push <Save>.
”%RH Setpoint” defines the basis for the
dehumidification. The setpoint is not to be seen as
maximum relative humidity. The setpoint is exceeded
by the Hysteresis Upper before the dehumidifier is
even activated.
”Hysteresis, Upper/Lower” defines at what percentage
points, respectively above and below the setpoint that
the dehumidifier shall activate and deactivate.
”Alarm, +RH%” defines at what percentage point
above the activation level that the humidity alarm on
the Control Panel shall be activated.
Example:
Setpoint: 65%
Hysteresis Upper/Lower: 4% / - 4%
Alarm, +%RH: 10%
Dehumidifier activation = 65% + 4% = 69%
Dehumidifier deactivation = 65%-4%=61%
Alarm is triggered at setpoint 65% + 4 % Hysteresis
Upper + 10% Alarm =
(65+4+10)%RH= 79%RH

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
19 (30)
RH Control Mode, Mould Growth Index (MGI)
Accessible from default view by pushing <Setup> and
then twice down arrow provided control mode MGI is
selected in the mode and reset menu.
To change parameters, push <Change>, use down
arrow to select parameter to change and push
<Select>.
Select parameter value of choice using the arrows and
then push <Save>.
”%RH Safety Margin” defines at what number of
percentage points below current MGI RH%, the lower
limit for mould growth at given temperature, that the
dehumidifier shall operate.
”Hysteresis, Upper/Lower” defines at what percentage
points, respectively above and below the RH Safety
Margin that the dehumidifier shall activate and
deactivate.
”Alarm, +RH%” defines at what percentage point
above the activation level that the humidity alarm on
the Control Panel shall be activated.
Example:
RH Safety Margin: -15%
Hysteresis Upper/Lower: 4% / - 4%
Alarm, +%RH: 10%
Dehumidifier activation = Current MGI - 15% + 4%
= Current MGI - 11%
Dehumidifier deactivation = Current MGI - 15% - 4%
= Current MGI - 19%
The alarm is triggered at Current MGI - 15 % Safety
Margin + 4 % Hysteresis Upper + 10 % Alarm which
equals Current MGI - 1 %.
In other words, the alarm will be triggered at a relative
humidity one percentage point below the lower limit
for mould growth at given temperature.

HomeVision® Pro/Lite
© Corroventa Avfuktning AB
Rev A
20 (30)
To use HomeVision® Lite
HomeVision® has an easily understood user interface with a display and three push buttons. The
push buttons are so called soft buttons meaning that their respective functions vary with the menus
to make the maneuvering as simple as possible.
The menus are all depicted below except for automatic alarms and reminder which are present in
separate chapter. From the default view, the menus are reached through the center setup button.