USER MANUAL
OPTIMA 312 – ES960C circuit
board
TABLE OF CONTENTS
1. Installation of Optima Design........................................................................................................................................ 3
1.1 Installation of the Control Panel ..................................................................................................................... 3
1.2 Mounting .................................................................................................................................................................. 3
2. Control Panel ....................................................................................................................................................................... 4
3. Installation ............................................................................................................................................................................ 4
4. Start-up ................................................................................................................................................................................. 5
5. Operation .............................................................................................................................................................................. 6
5.1 Operating and Changing Data in the Operating Menu ............................................................................. 6
5.2 Main Menu ............................................................................................................................................................... 7
5.3 Date and Time .........................................................................................................................................................7
5.4 Calendar ................................................................................................................................................................... 8
5.5 User Menu ................................................................................................................................................................ 8
5.6 Display Menu .......................................................................................................................................................... 9
5.7 Info Menu .............................................................................................................................................................. 10
5.8 Service Menu ....................................................................................................................................................... 11
5.9 Schedule for Week Program ..........................................................................................................................16
5.10 Defrosting Schedule ...................................................................................................................................... 16
5.11 Set Point Schedule .........................................................................................................................................17
6. Function .............................................................................................................................................................................. 18
6.1 Operation of Optima 312 ................................................................................................................................ 18
6.2 Extra Capacity .....................................................................................................................................................18
6.3 Operating Reliability .........................................................................................................................................18
7. Maintenance ......................................................................................................................................................................19
7.1 Unit ..........................................................................................................................................................................19
7.2 Water Circuit and Boiler .................................................................................................................................. 19
7.3 Dismantling/Taking the System Out of Service ..................................................................................... 19
8. Troubleshooting ............................................................................................................................................................... 20
. High-Pressure Pressure Switch .....................................................................................................................
. Immersion Heater's Safety Thermostat ....................................................................................................
. System Is Not in Operation ............................................................................................................................
. Air Faults ...............................................................................................................................................................
2
1. INSTALLATION OF OPTIMA DESIGN
1.1 Installation of the Control Panel
The control panel is designed to be mounted onto a level
wall.
1.2 Mounting
Find the installation place for the control panel, mark off
the holes and screw the fixture securely onto the wall. Use
at least 4 screws for securing the panel, two at the top and
two at the bottom.
Obligatory screw Obligatory screw
ScrewScrew
Obligatory screw Obligatory screw
Hold up the wall frame against the wall and mark off the
holes for fastening the frame. Drilling of holes, hole size
and suitable screws for fixing the panel all depend on the
wall material.
Underneath the control panel there is access for the:
A: Terminal block. Connection to main circuit board
Fit a 8 x 0.25 mm2 low-current cable between the unit and
the control panel. The maximum cable length is 50 m. The
voltage drop for cable lengths over 50 m is too high and can
cause operating trouble.
Method of Installation of the Wall Fixture:
First screw the fixture securely onto a level wall and then
guide the cable visibly up from below.
Connect the low-current cable to the terminal block. Check
that the cable is connected to the same numbers at both
ends (between the control panel and the main circuit board
in the unit.)
Clip the control panel to the wall fixture by guiding it down
from above, slightly slanting out at the bottom. Finish by
pressing it in at the bottom so that it is flat against the
wall. To disassemble, pull the control panel slightly slanting
out at the bottom and lift up.
Place the control panel in the fixtures and tilt it in
against the wall. The four support points in the corners of
the display must touch the wall to keep the display stable.
Support
point
Support
point
Support
point
Support
point
Position Description
1 Panel casing
2 Front of panel
3 Display pressure plate
4 Wall fixture
5 Display glass
A
3
2. CONTROL PANEL 3. INSTALLATION
The control panel must be mounted on an interior wall that
is centrally located in the home. Since the control panel
can simultaneously function as a room thermostat, it is
important to observe, as follows (unless extract air temperature control unit is used):
• Do not expose the control panel to direct sunlight
• Do not place the control panel on an outer wall
• Do not recess the control panel in the wall
• Do not place the control panel over a heat source
A lamp close to the control panel can affect the light sensor and prevent the control panel from regulating the light
intensity as intended.
7 keys used for operating the panel are placed on the front
of the control panel in the ring. The function
of the keys changes depending on the menu selected.
(More information is available under Operation.)
There is an infrared movement sensor located under the
glass screen.
You can bring up the menu for the daily operating options
by just waving your hand by the control panel (it is possible
to turn this function off: See under Main menu/Display/
Menu item 5).
The following components are placed at the bottom of the
control
panel:
1. SD card
2. Room sensor
3. Light sensor
4. Mini USB port for connection to computer
1: The removable SD card contains all the control models
and versions, which makes the control panel compatible
with older versions. The SD card also contains all the languages, menus, help texts, symbols and collected data
logs. The current versions are installed in the control panel
during the start-up procedure so that the control unit can
function without the SD card. However, the help texts will
not appear in the display, and the data logs will not be
saved.
4: In order for a computer to be able to read the data logs,
the computer must have the Genvex data logger program
installed.
See the installation guide.
4
4. START-UP
The first time the system is started, the control panel display will show: “Choose language”.
Click “Next” to switch among Danish, English, German and
French. Press “Enter” when your desired language is shown
in the display. The control panel will now load the current
program version in the selected language.
The display will show:
• Updating model (loading the current model)
• Wait 1.5 minutes (It takes approximately 1.5 minutes to
load the current version)
• Language load (91)
• Language OK
• Menu load (84)
• Menu OK
• Icon load (369)
• Menu OK
• Reset to default
• Restarting……..
• Optima 312 UK
The display will then change to:
• Genvex logo
• Optima 312 UK
• Version number
D (Control panel): X.X
C (Main board): X.X
Finally, the display changes to daily operation, and the system is now in operation with the factory setting, which is
only a basic setting.
The system is now ready to be fine-tuned with the most
optimal air flows and operational desires and demands for
the dwelling in question, e.g. weekly operation, temperatures, etc. to ensure that the system is used and operated
as optimally as possible.
5
5. OPERATION
Optima 312
All Genvex combined ventilation units and domestic hot
water heat pumps of the Combi 185 BP type for dwellings
are supplied with the Optima 312 control unit, which has a
factory setting, which means that the system can be put
into operation without further setup.
The factory setting is a basic setting that should be adapted to the operating desires and demands for the home in
question to ensure that the system is used and operated
as optimally as possible.
5.1 Operating and Changing Data in the Operating Menu
Normally the symbols for the daily operating options are
displayed, and the following keys are visible:
K1
K2
K7
K6
K3 – Immersion heater
Use the key next to the symbol “Immersion heater” to
change between + and ÷. If the symbol is set to “+”, the
immersion heater will automatically engage, as required. If
the symbol is set to “÷”, the immersion heater will not
engage, even if required. It is a precondition that item 3 in
the User Menu is set to ON.
K4 – Main Menu
Use this function to enter the main menu and access the
sub-items Date and time, Calendar, User menu, Display,
Info menu and Service menu.
K5 – Filter
Use this function to reset the filter alarm.
The key next to the “Filter” symbol resets the alarm for filter change. To reset the filter alarm, first change the filters and press and hold the key with the “Filter” symbol
until the exclamation mark in the symbol disappears.
K6 – Information
Use this function to get an overview of the current operating condition of the unit, e.g. temperatures, fan settings,
relay status/function ON/OFF, alarms, timers, etc. Use the
key next to the symbol “Info” to read off the operating condition of the unit. More information can be found in the
main menu section under the item Info operation.
K4K3 K5
K1 – Speed
Use this function to set the fan speed
to levels 0-1-2-3-4.
Use the key next to the “Speed” symbol to change among
the 4 speeds. It is also possible to stop the system by
pressing and holding the key for 3-4 seconds on condition
that item 28 of the Service menu is set to ON.
K2 – Forced operation (Party mode)
This feature makes it possible to set the timer for forced
operation to between 0 and 9 hours.
Use pushbutton K2 to switch from 0 to 9 hours.
If the number of hours is set to 0, speeds 3 and 4 will run
until the speed is changed manually. If the number of hours
is set to between 1 and 9 hours, speeds 3 and 4 will automatically reconnect to speed 2 after the set number of
hours.
K7 – Temperature
Use this function to set the room temperature. Press the
key next to the “Temperature” symbol to enter a desired
temperature between 10 and 30 °C.
The current temperature will be displayed in the centre of
the screen.
Press the K4 key to enter the main menu and sub-menus,
where the following keys will change function:
K3 changes to “Arrow down ” and when the setting is
changed to “÷”.
K4 changes to “Enter”. Press “Enter” to proceed through
the menus and sub-menus.
K5 changes to “Arrow up” and when the setting is changed
to “+”..
K6 changes to “Exit”. Press “Exit” to return to the previous
screen.
K7 changes to “Help”. Press “Help” to view a short descrip-
tion of the current menu item.
The horizontal arrow in the menu shows the current location. To save changes to a menu item, finish by pressing
“Enter”.
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5.2 Main Menu
There is a “Book” K4 symbol lowermost in the centre of
the screen underneath the daily operating options. It
provides access to the main menu. Press this key to
enter the main menu.
Date and time (item 4.3)
5.3 Date and Time
Use this function to set and change the date and time.
01 Timer
Use this field to input the current hour. When switching
between summer and winter time, you have to set the
time one hour forward or back manually.
Calendar (item 4.4)
User menu (item 4.5)
Display (item 4.6)
Info operation (item 4.7)
Service menu (item 4.8)
“Arrow down” or “Arrow up” will change the symbol to a
horizontal arrow that indicates the current location.
Press “Enter” to access the sub-items of the current
menu. Press “Arrow down” or “Arrow up” again to select
the required sub-menu item. When the horizontal arrow
is next to a sub-menu item, the 2 lines will change place,
the font sizes will change, and the text “Set” will be added. Pressing ”Enter” next to the selected sub-menu item
will change the background of the item to grey. Use the
“+” and “÷” keys to change the current value. Press “Enter”
again to save the change. If no changes are required,
press “Exit” to go back out of the menus.
Press “Help” to view a short help text about the menu
item on the screen. Press one of the keys to exit the help
program.
If none of the keys is pressed within a short period of
time, the control unit will automatically exit the programs.
02 Minutes
Use this field to input the current minute.
03 Weekday
Use this field to input the current weekday.
04 Date
Use this field to input the current date.
05 Month
Use this field to input the current month.
06 Year
Use this field to input the current year.
Weekday
Monday 1
Tuesday 2
Wednesday 3
Thursday 4
Friday 5
Saturday 6
Sunday 7
Month
January 1
February 2
March 3
April 4
May 5
June 6
July 7
August 8
September 9
October 10
November 11
December 12
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5.4 Calendar
Use this function to configure and change the setting of
each day of the week. Each day can be configured to run at
different fan speeds, as required. It is possible to copy the
configuration from one weekday to another. Here it is also
possible to choose ON or OFF, i.e. if there is nobody home
for a period of time, the daily settings can be turned off,
and the system will run according to a manual setting, for
example, level 1.
01 – Calendar
Choose between controlling the system manually or
controlling the speed (air exchange) and temperature
automatically, according to a fixed weekday program.
5.5 User Menu
01 – Temperature
Use this field to set the room temperature. The room
sensor is installed in the control panel.
Setting range: between 10 and 30 °C.
Factory setting: 21 °C.
02 – Domestic water
Use this field to set the desired domestic hot water
temperature.
Setting range: between 0 and 55 °C.
Factory setting: 52 °C.
If the menu item is set to OFF, the system will be controlled
manually according to the selected speed and temperature.
If the menu item is set to ON, the system will be controlled
according to the weekday programs entered in menu items
02 to 08.
Setting range: ON/OFF.
Factory setting: OFF.
02 – Monday
Up to 10 switching times can be entered for one day. The
times can be input in a random order. Enter the hours in the
first column, the minutes in the second and the speed in the
third column. Use the fourth column to input the temperature difference by which the temperature should be lowered.
Example: If the temperature is set to 21 ºC and you
enter – 2.0 °C, the system will aim at 19 °C.
If the speed has been changed manually with the key during
the daily operation, the program will return to the weekday
program when the next switching time passes.
Examples of a weekday program:
01 07:30 H3 - 0.0
02 09:15 H1 -1.0
03 17:00 H3 - 0.0
04 18:00 H2 - 0.0
05 23:30 H2 - 2.0
03 – Immersion heater
By configuring the set point to “ON”, the immersion heater
will automatically engage, if necessary. If the set point is
configured to “OFF”, the immersion heater will not engage,
even if there is a need for this.
When the fresh air temperature is below 0 °C, it is recommended to connect the immersion heater as a supplement
to the heating of the domestic hot water, thereby reducing
the heating time.
Setting range: ON/OFF.
Factory setting: OFF.
04 – Timer levels 3 and 4
If the unit runs at speed 3 and 4 and the set point is set to
ON, the unit will automatically reconnect to speed 2 after
the number of hours set in item 17 of the Service Menu. If
the set point is set to OFF, the system will run at speed 3 or
4 until it is manually changed to another speed. The timer
can also be operated directly, with the key next to the symbol for “Party mode” on the screen for daily operating
options.
Setting range: ON/OFF.
Factory setting: OFF.
05 – Filter change
There is a built-in filter timer that counts how long the system has been running since the most recent filter change.
It is not necessary to use all switching times.
If there is 0 in the entire line, the control unit will skip it.
03 to 08
These days can be filled in individually in the same way as
under item 02.
09 – Copy day
Use this menu item to copy one day of the week to another,
where the same switching times, speeds and temperature
lowering are required. Example: From Thursday to Tuesday
The set point can be set to between 1 and 12 months.We
recommend that the set point be initially set at 3 (3
months).
If the filters are too dirty after the set period, it is possible
to set the set point to a lower number of months. If it is not
necessary to change the filters after the set period, the set
point can be set to a higher number of months.
When the timer reaches the set value for filter change, the
“Change filter” alarm will flash at the top of the screen saver.
8
Once the filters are changed, return to the screen with daily
operating options and press and hold the key for the “Filter”
symbol until the exclamation mark disappears and the system returns to normal operation.
Setting range: Between 1 and 6 months. Input 0 in the filter
alarm to deactivate it. Note: Genvex assumes no responsibility for damage that can be traced back to a deactivated filter
timer and lack of service that follows from it.
Factory setting: 3.
5.6 Display Menu
Use the Display menu to set and change the following submenu items:
01 – Language
Use this option to choose among several different languages in the display.
02 – Program info
Use this option to view what Optima is installed on the unit
and what is its version number:
Example: Optima 312 UK D: 3.1 C: 1.0
D stands for the version number of the control panel.
C stands for the version number of the main board.
03 – Screen saver
Use this option to select the following settings:
0: Screen saver off.
(ON and displaying daily operating options)
1: Screen saver off, but with light dimming
2: Room temperature + light dimming
3: Clock + light dimming
4: Clock and room temperature + light dimming
5: Black screen + light dimming
Setting range: between 0 and 5.
Factory setting: 3.
05 – Auto wake-up
It is possible to disengage the “Auto wake-up” function,
where you can change from the screen saver to the screen
with the symbols for the daily operating options by waving
your hand past the control panel.
Setting range: between 0 and 4.
Factory setting: 1.
“” OFF
“” Max sensitive
“” Level
“” Level
“” Least sensitive
06 – Auto lightness
The display is fitted with a motion sensor.
Setting range: ON/OFF.
Factory setting: ON.
07 – Lightness day
Use this option to enter the maximum brightness level for
the control panel when the room is fully lit.
Setting range: between 0 and 100%.
Factory setting: 100%.
08 – Lightness night
Use this option to enter the minimum brightness level
required for the control panel when the room is completely
dark.
Setting range: between 0 and 100%.
Factory setting: 30%.
09 – Lightness day screen saver
Use this option to enter the maximum brightness level for
the screen saver when the room is completely lit.
04 – Pause time
Use this option to set how long it should go from no opera-
Setting range: between 0 and 100%.
Factory setting: 50%.
tion of the symbols on the screen for daily operation until
the screen automatically returns to the screen saver. The
time to go from daily menu to screen saver can vary from 1
to 10 minutes. The other automatic return connections can-
10 – Lightness night screen saver
Use this to enter the minimum brightness level for the
screensaver when the room is completely dark.
not be adjusted. If no key has been pressed within the time
intervals indicated below, it will automatically return to the
previous screen:
Setting range: between 0 and 100%.
Factory setting: 0%.
• Change in menu item back to menu item = 30 seconds
• From menu item to main menu = 2 minutes
• From menu item to daily menu = 2 minutes
Setting range: between 1 and 10 minutes.
Factory setting: 10 min.
9
11 – Reset to factory settings
If the set points are so configured that the system does not
function as expected and the reason for this cannot be
established, there are 2 different options for resetting the
menu items to the factory settings:
Press 1 to change all menu items
except the menu items for Speed (Level), Filter timer, Calendar and Defrost temperatures to the factory settings.
Press 2 to change all menu items to the factory settings.
Note: Before carrying out a reset, make sure that the
current input values are noted down in the “Set Point
Schedule”.
Setting range: between 0 and 2.
Factory setting: 0 mode.
12 – Safety menu
It is possible to prevent access to selected main menu
items so that they can only be changed with a password,
which is a 4-digit figure. The first time, press 4 times 0 and
then “Enter”. This will open items 13 to 18. Select a password in item 18. This will be the password for accessing
menu items 13 to 18 in future.
13 – Date and time
If this item is set to ON, you will not be able to access the
Date and time menu without the password selected in item
18.
Setting range: ON/OFF.
Factory setting: OFF.
14 – Calendar
If this item is set to ON, you will not be able to access the
Calendar menu without the password selected in item 18.
Setting range: ON/OFF.
Factory setting: OFF.
15 – User menu
If this item is set to ON, you will not be able to access the
User menu without the password selected in item 18.
17 – Service menu
If this item is set to ON, you will not be able to access the
Service menu without the password selected in item 18.
Setting range: ON/OFF.
Factory setting: OFF.
18 – Password
Use this field to enter the selected password. In the future,
you will also have to use it in item 12 to access items 13 to
18. If you forget your password, contact Genvex Service
department for assistance. To change the password, enter a
new password in this item and press “Enter”.
The password will now change.
5.7 Info Menu
I The “Info operation menu” provides an overview of the
current operating status of the unit.
If you want to see the operating status of the system over a
period of operation, connect the control panel to a com-
puter and use the Optima data logger program.
The system monitors the operating status every minute and
stores the data on the SD card for up to one year..
Current temperature
Press “Enter” next to the Info menu. The first screen to be
displayed shows the current temperatures..
T Supply air
T Room
T Fresh air
T Discharge air
T5 Before cooling coil
T6 Cooling coil
T Boiler, top
T Boiler, bottom
T Auxiliary sensor
Current fan speed
Press “Arrow down” to display the current fan speeds in per
cent and the opening of the bypass damper and of the
water valve.
Setting range: ON/OFF.
Factory setting: OFF.
16 – Display
If this item is set to ON, you will not be able to access the
Supply air in %
Extract air in %
Bypass damper in %
Water valve in %
Display menu without the password selected in item 18.
Setting range: ON/OFF.
Factory setting: OFF.
10
Current setup of operating relays
Press “Arrow down” again to display the current status of
the operating relays.
R Compressor
R Immersion heater
R Electrical reheater
R Defrosting
R5 Domestic water
R6 Room
R7 Extra cooling
R8 Auxiliary relay 8
R9 Auxiliary relay 9
Current list of alarms
Press “Arrow down” once again to display the current
alarms. An alarm is activated If there is ON next to the
alarm.
There is an alarm next to ON, which can also be seen on the
screen saver and the display for daily operating options.
Which alarm it is is displayed in the “Info operation” menu.
When the timer reaches the set value for filter change, the
“Change filter” alarm will flash at the top of the screen saver. Once the error has been corrected or the filter changed
and the alarm reset, the alarm will read OFF.
Error
reporting
Control unit
stopped
Change filter ON/
Pressure
switch
Frost
protection
Com error ON/
Status Error next to ”ON”
ON/
OFF
OFF
ON/
OFF
ON/
OFF
OFF
Filter not changed after days./Frost
protection error/The system is equipped
with an external switch between terminals
and .
When these have short-circuited and the
system has stopped,
“Alarm” will be displayed.
The filters must be changed
The high-pressure pressure switch is
disconnected due to excessive pressure in
the cooling system.
The temperature of the water after the
heater is too low (frost danger).
The control panel cannot communicate with
the main board (between the display and the
printed circuit board).
Hour counters (2 pages)
Press “Arrow down” again to display the hour counters,
which count from the day the system is put into operation.
The figures displayed should be multiplied by 10. This is
where you can see how many hours the system has been
running, how many hours the system has run at various
speeds and how many hours the relays have been
connected (ON).
Total time
Level 0
Level 1
Level 2
Level 3
Level 4
Relay Compressor
Relay Immersion heater
Relay Electrical reheater
New page comes up in the
display
Relay Help function
Relay Help function
Press Exit to return to the main menu.
5.8 Service Menu
Use this function to set and change the following sub-menu
items.
10 – Level 1 Supply air
Level 1, which is the lowest speed, is usually used when
there is nobody home. Both fans can be configured inde-
pendently of each other so that there is equal air flow in the
supply air and in the extract air, which ensures optimal
operation. The system must be fine-tuned using specialised
air-measuring equipment. Such fine-tuning is possible with-
out using the main regulating damper. It is not recommend-
ed to configure the air flows without expert advice. An
incorrect configuration can lead to higher energy consump-
tion or to an unpleasant indoor climate.
Setting range: between 0 and 100%.
Factory setting: 30%.
11 – Level 2 Supply air
Level 2 is the recommended speed of the system for pro-
viding optimal indoor climate, which should be adjusted to
the ventilation needs of the home.
Setting range: between 0 and 100%.
Factory setting: 50%.
12 – Levels 3 and 4 Supply air
Level 3 is the highest speed that can be configured. It is
used, e.g. if there are many guests or a lot of activity in the
kitchen.
11
Setting range for level 3: between 0 and 100%.
Factory setting for level 3: 75%.
precaution is not required, the set point can be configured
to OFF, and the system will continue to operate.
Level 4 is used, in particular, in the summer in order to lower
the indoor temperature. Remember that a higher air
exchange rate increases energy consumption.
Setting range for level 4: cannot be set
Factory setting for level 4: 100%.
13 – Level 1 Extract air
The fan speed is adjusted until the air flow is the same as
the supply air in level 1.
Setting range: between 0 and 100%.
Factory setting: 30%.
14 – Level 2 Extract air
The fan speed is adjusted until the air flow is the same as
the supply air in level 2.
Setting range: between 0 and 100%.
Factory setting: 50%.
15 – Levels 3 and 4 Extract air
The air flow at level 3 is adjusted to the same air flow as
the supply air at levels 3 and 4 (item 12).
Setting range for level 3: between 0 and 100%
Factory setting for level 3: 75%.
Setting range: ON/OFF.
Factory setting: OFF.
19 – Immersion heater
If item 3 in the Service menu is set to ON and the key on
the control panel for the immersion heater is activated, the
immersion heater will heat up the domestic water
in the upper part of boiler to the set temperature.
Setting range: between 0 and 65 °C.
Factory setting: 50 °C.
20 – Disinfection
If the item is configured to ON, the immersion heater will
heat the domestic water up to 65 °C once a week in order to
disinfect the boiler regardless of the temperature setting.
Setting range: ON/OFF.
Factory setting: OFF.
21 – Heating air
The default setting of the control unit is OFF in order to
give priority to domestic water heating before room
heating. To change the priority, the set point must be
configured to ON.
Setting range for level 4: cannot be set
Factory setting for level 4: 100%.
16 – T2 Fine-tuning
It is possible to fine-tune the room sensor of the control
panel
to make it possible to view the correct current room temperature on the display.
Setting range: between 0 and -5 °C.
Factory setting: -3 °C.
17 – Timer levels 3 and 4
If automatic reconnection is used for speeds 3
or 4, it is possible to enter how many hours the system
should run at level 3 or 4 before it automatically returns to
level 2.
Setting range: between 1 and 9 hours.
Factory setting: 3 hours.
18 – Filter/stop
To make sure that the filters are changed when the “Change
Filter” alarm flashes on the screen of the control panel, the
set point can be set to ON. If the filters are not changed,
the system will stop automatically after 14 days. If this
Factory setting: OFF.
22 – Regulation water
If a water reheater with a motor-operated valve is installed
in the system, it may be necessary to adjust the regulation
time. The less the regulation time, the faster the motoroperated valve will regulate.
Setting range: between 1 and 250 sec.
Factory setting: 20 sec.
23 – Regulation power
If an electric preheater or an electric reheater is installed,
it may be necessary to adjust the regulation time.
Setting range: between 1 and 30 minutes.
Factory setting: 3 min.
24 – Minimum extract air
This is where the minimum extract air flow is set. The heat
pump will not start with extract air flow below this setting.
Setting range: between 0 and 100%.
Factory setting: 30%.
12
25 – Electric heating coil
Use this option to input if the installation is fitted with an
electric heating coil:
0 = No electric heating coil installed
1 = Electric reheater installed
2 = Electric preheater installed
Setting range: 0-2.
Factory setting: 0.
26 – Solar collector hysteresis (ºC)
If a solar collector is connected to the coil of the boiler, use
this option to input the temperature difference between the
temperature in the solar collector (T9) and the domestic
water temperature (T8) that should be reached before the
solar pump starts. The solar pump will not stop until T9 is
equal to T8. The solar pump will stop under all circumstances
once T8 has reached a temperature of 60 °C.
29 – Stop defrosting
The defrosting period ends by default when the evaporator
reaches a temperature of 5 °C, which is the standard
setting. Under special operating conditions where the
evaporator is not completely defrosted, it may be necessary to change this temperature to a higher value.
Setting range: between 0 and 15 °C.
Factory setting: 5 °C
Note: Changing this parameter without expert advice is not
recommended.
30 – Compressor start/stop
The default temperature difference between start/stop
compressor is ± 0.4 °C. Changing the temperature difference is recommended under special operating conditions.
Setting range: between 0.1 and 1.0 °C.
Factory setting: 0.4 °C.
Setting range: between 0 and 5 °C.
Factory setting: 5 °C.
27 – Help function (Terminal H17 on the ES960 circuit
board) This function can be used for, as follows:
Set
point
0 The relay is off
1 The relay is on when the system is in operation. This option can
2 The relay is on when extra heat is required or when the circu-
3 The relay is on when the “Change filter” alarm is active.
4 The relay is on when extra cooling is required. This function is
5 The control unit can handle an earth heat exchanger using a
Function
be used, e.g. in order to open and close the fresh air damper and
the discharge air damper.
lating pump should run when heating with water reheater is
required.
This option can be used to activate an external alarm.
used if the system is also fitted with a
preheater.
damper. The relay will be on in case of one of the following two
conditions:
The outdoor temperature, sensor T9, is lower than the value set
in item 37 (frost protection temperature, typically set at 5 °C).
The outdoor temperature, sensor T9, exceeds by more than 1°
the temperature configured in item 1 and by more than 1° the
current room temperature.
Note: Changing this parameter without expert advice is not
recommended.
31 – Constant ON
If the home's other heating systems are not connected
to the heat pump system, the home's other heating systems, e.g. a wood-burning stove, can stop the heat pump so
that the heat pump system with heat exchanger only blows
preheated air into all rooms. This will cause increasing
problems with draught as the temperature falls outside.
Systems without heat exchangers will blow fresh air directly inside.
Setting the set point to ON will disconnect the room sensor. The unit will always operate and blow warm air in when
the fresh air temperature is below the temperature set in
item 32. If the set point is configured to OFF, the room sensor will regulate the unit regardless of the fresh air temperature.
Setting range: ON/OFF.
Factory setting: OFF.
32 – Constant
Use this option to set the desired fresh air temperature
if constant ON is selected in item 31.
Setting range: between 0 and 5.
Factory setting: 0.
28 – System stop
Use this option to choose if the system can be stopped by
pressing the key for speed (K1) in the operating menu for
3-4 seconds. If the value is OFF, the system cannot be
turned off.
Setting range: between 0 and 10 °C.
Factory setting: 5 °C.
33 – Reduction
Lowering the supply air flow is recommended at very low
fresh air temperatures in order to improve the operating
conditions of the unit and to also achieve a higher supply air
temperature, even though the same air flow continues to be
extracted.
Setting range: ON/OFF.
Factory setting: OFF.
13
Setting the set point to ON will lower the supply air flow
when the fresh air temperature falls below
the set temperature. If the set point is set to
OFF, there will be no reduction in the supply air flow. This
setting is used when there is a preheater installed on the
fresh air side. This setting should be used with care if there
is a wood-burning stove installed in the home.
Setting range: ON/OFF.
Factory setting: OFF.
34 – Reduced supply air flow
When the set point is set to ON in item 33, we recommend
that
the fresh air temperature be set to -10 °C.
Setting range: between -15 and 0 °C.
Factory setting: -10 °C.
35 – Supply air speed
When the set point in item 33 is set to ON, we recommend
that the reduced supply air flow be configured to 20% lower than the value set in item 11.
Setting range: between 0 and 100%.
Factory setting: 20%.
36 – Auxiliary relay 8 – (terminal H16 on the ES960 circuit
board)
Relay 8 can be used for the following functions:
Set
point
0 It is possible to connect the solar pump regulated in item 26.
1 It is possible to connect a water reheater circulation pump.
2 The relay is on when the system is running.
3 It is possible to connect the solar pump regulated in item 26.
Function
The pump will stop when the T8 domestic hot water temperature reaches 60 °C.
The pump will only run when heat is required.
Can be used, e.g. in order to open and close the fresh air
damper and the discharge air damper.
The pump will stop when the T8 domestic hot water temperature reaches 52 °C.
Setting range: between 0 and 3.
Factory setting: 0.
37 – Earth heat exchanger
If an earth heat exchanger is fitted to the system and set
point 5 in menu item 27 has been selected, it is possible to
configure the lowest temperature at which the
earth heat exchanger is to operate.
Setting range: between 0 and 10 °C.
Factory setting: 0 °C.
Use this option to set the minimum air flow for supply air.
The heat pump will not start with supply air flow below this
setting.
Setting range: between 0 and 100%.
Factory setting: 30%.
40 – Minimum Air Mode
0 = Off: If the value set for extract air or supply air is below
the values set in items 24 and 39, respectively, the heat
pump will not start when there is a need for air or water
heating.
1 = Winter: Should the actual operational settings for
extract air or supply air flow fall below the minimum set-
tings in items 24 and 39, respectively, and there is a need
for the heat pump to operate, the extract air volume and
supply air volume will rise to the set minimum air flow rates.
On heat pump STOP, air volumes return to the values they
had before the heat pump was started.
2 = Summer: When the heat pump operates in conjunction
with air heating, the control unit responds as described in
“1”.
When the heat pump operates in conjunction with water
heating
and the extract air flow falls below the setting in item 24, it
will go up to the setting in item 24.
The supply air volume will not change, but will remain at the
current setting.
On heat pump STOP, the extract air volume will return to the
setting it had before “Heat pump on”.
3 = Auto: When T3 (Fresh air) > 15 °C, regulation will be as if
the setting in this item was 2 “Summer”.
When T3 (fresh air) ≤ 15 °C, regulation will be as if the set-
ting in this item was 1 “Winter”.
Setting range: 0-3
Factory setting: 0
41 – Modbus Mode
See a separate description of MODBUS
Setting range: 0-2
Factory setting: 0
42 – Modbus address
See a separate description of MODBUS
Setting range: 1-247
Factory setting: 1
43 – Electric preheater
If an electric preheater has been installed and Service menu
item 25 has been set to 2, use this option to input below the
fresh air temperature at which the electric preheater is
supposed to switch on.
38 – Changing temperature scale
The menu is not in use.
Setting range: between -15 and 0 °C.
Factory setting: 0 °C.
39 – Minimum air supply
14
44 – Preheat PI P
P-band for the PI controller for the electrical modulating
preheater.
The P-band controls the amplification of the controller following a deviation from the set point (speeder)
When using the modulating reheater, it will be necessary to
replace the inlet air temperature sensor (T1) in the ventila-
tion unit with a new temperature sensor installed upstream
of the reheater.
45 – Preheat PI I
I-band for the PI controller for the electrical modulating
preheater. The function controls how quickly the controller
adapts to a deviation of the set point (brake).
46 – Preheat Reg
The preheat cycle function works, as follows: E.g. necessary
output 50% and cycle = 60 sec means that the controller
will switch the preheater on for 30 sec and then off for
another 30 sec.
Note: Please refer to your country-specific regulations on
limitations when adjusting this function.
The modulating preheater function refers to the value
adjusted in set point no. 43. The preheater will try to maintain a steady outdoor air temperature according to this set
point. When the modulating preheater is used, the existing
outdoor air temperature sensor (T3), which is built into the
ventilation unit, can be used as reference. No extra temperature sensor is required.
47 – Reheat offset
Offset for reheater with reference to the set point for the
requested temperature on the display (user menu 01).
For example, the desired temperature = 20 °C offset value=2 the reheater will try to maintain a supply air temperature of 18 °C.
48 – Reheat PI P
P-band for the PI controller for the electrical modulating
reheater. The P-band controls the amplification of the controller following a deviation from the set point (speeder).
51 – Bypass max
Use this option to set the temperature at which the bypass
should
be 100% open. You set a temperature differential, which
means that if you want the bypass to be 100% open, at e.g.
23 °C and if the set temperature in User menu item 1 is 20
°C, this menu item should be set to 3 °C.
The bypass will open, provided that:
1. The extract air temperature is higher than the fresh air
temperature.
2. The fresh air temperature is above the temperature set
in the Service menu item 29.
The bypass opens when the temperature reaches the set
point in User menu item 1 + the temperature differential
set in this menu item.
Note. The bypass and reheater cannot run simultaneously.
52 – Close bypass at low fresh air
To prevent the bypass damper from opening at fresh air
temperatures and from blowing cold, unheated air into the
dwelling, use this function to configure the lowest fresh air
temperature at which the damper must be closed. The value
is an expression of the greatest difference that may exist
between the temperature configured in item 1 and the lowest fresh air temperature. Setting range: Between 0 and 20
°C. If 0 °C is selected, the function is turned completely off.
53 – Method of regulation
Use this option to set which sensor will be used as a reference point for the desired set point temperature.
49 – Reheat PI I
I-band for the PI controller for the electrical modulating
preheater. The function controls how quickly the controller
adapts to a deviation of the set point (brake).
50 – Reheat Reg
The reheat cycle function works, as follows: For example,
necessary output 50% and cycle = 60 sec means that the
controller will switch the preheater on for 30 sec and off
for another 30 seconds.
Note: Please refer to your country-specific regulations on
limitations when adjusting this function.
The modulating reheater function refers to the value
adjusted in set point no. 01. The reheater will try to maintain a steady supply air temperature according to this set
point.
There are 2 options:
1. Extract air sensor in unit (T2S)
2. Sensor in display (T2)
If it is not possible to place the display with the built-in
temperature sensor in a room that is “representative” for
the overall temperature in the entire home, we recommend
that you use the T2S extract air sensor as reference sensor.
15
5.9 Schedule for Week Program
Monday
Hours Minutes Speed Red. T2
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Thursday
Hours Minutes Speed Red. T2
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Tuesday
Hours Minutes Speed Red. T2
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Friday
Hours Minutes Speed Red. T2
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Wednesday
Hours Minutes Speed Red. T2
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Saturday
Hours Minutes Speed Red. T2
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
5.10 Defrosting Schedule
Before cooling coil °C Cooling coil °C
15 -2
14 -2
13 -2
12 -2
11 -2
10 -2
9 -2
8 -2
7 -2
6 -2
5 -2
4 -2
3 -3
2 -4
1 -4
0 -5
-1 -6
-2 -6
-3 -7
-4 -7
Sunday
Hours Minutes Speed Red. T2
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Red. T2 = Reduced room temperature
(Night set-back)
16
. Set Point Schedule
Item Heading Factory setting: Configuration area Date Date Date Date
(5.5) 1 Temperature 21 °C 10 - 30 °C
2 Domestic water 52 °C 0 - 55 °C
3 Immersion heater ON/OFF OFF ON / OFF
4 Timer levels 3 and 4 OFF ON / OFF
5 Filter change 3 months 0 to 12 months
(5.8) 10 Level 1 Supply air 30% 0 - 100%
11 Level 2 Supply air 50% 0 - 100%
12 Levels 3 and 4 Supply air 75 / 100% 0 - 100%
13 Level 1 Extract air 30% 0 - 100%
14 Level 2 Extract air 50% 0 - 100%
15 Levels 3 and 4 Extract air 75 / 100% 0 - 100%
16 T2 Fine-tuning ÷3 °C ÷ 5 - 0 °C
17 Timer levels 3 and 4 3 hours 1 - 9 hours
18 Filter / stop OFF ON / OFF
19 Immersion heater 50 °C 0 - 65 °C
20 Disinfection OFF ON / OFF
21 Heating air OFF ON / OFF
22 Regulation water 20 sec. 1 - 250 sec.
23 Regulation power 3 min. 1 - 30 min.
24 Min extract air 30% 0 - 100%
25 Electric heating coil 0 0-2
26 Solar collector 5 °C 0 - 5 °C
27 Help functions 0 0 - 5
28 System stop OFF ON / OFF
29 Stop defrosting 5 °C 0 - 15 °C
30 Compressor start/stop 0.4 °C 0.1 - 1.0 °C
31 Constant ON OFF ON / OFF
32 Constant 5 °C 0 - 10 °C
33 Reduction OFF ON / OFF
34 Reduced supply air flow ÷10 °C ÷15 - 0 °C
35 Supply air speed 20% 0 - 100%
36 Auxiliary relay 8 0 0 / 1 / 2 / 3
37 Earth heat exchanger 0 °C 0 - 10 °C
38 Changing temperature scale OFF ON / OFF
39 Minimum supply air 30% 0 - 100%
40 Minimum Air Mode 0 0/1/2/3
41 Modbus Mode 0 0/1/2
42 Modbus Address 1 1-247
43 Electric preheater 0 °C -15 - 0 °C
44 Preheat PI (P) 5 1 - 255
45 Preheat PI (I) 200 1-255
46 Preheat Reg. (s) 40 10-120
47 Reheat offset (-) 2 0-20 °C
48 Reheat PI (P) 5 1 - 255
49 Reheat PI (I) 200 1-255
50 Reheat Reg. (s) 40 10-120
51 Bypass maximum 3 1-10
52 Close bypass at low fresh air 4 0-20 °C
53 Reg. form (1=T2S 2=T2D) 2 1-2
17
6. FUNCTION
6.1 Operation of Optima 312
A Combi unit is used for heating domestic water and supply
air in order to cover the ventilation needs of the home and
partial basic heating.
Domestic water heating
The temperature of the domestic water is controlled by
sensor T8, which is fitted at the bottom of the boiler. When
the domestic water needs to be heated, the compressor
starts, solenoid valves MA 3 and MA 6 open, and the
domestic water is heated to the configured domestic water
temperature.
Room heating
Solenoid valves MA 2 and MA 5 are activated for room
heating. Room temperature is controlled by room sensor
T2, which is fitted in the control panel, or by extract air
sensor T2S, which is fitted in Combi 185. If this temperature has been set to, e.g. 2 °C, the compressor will start
when the room temperature falls to 20.6 °C. The compressor will stop when it has increased the room temperature
to 21.4 °C. If the compressor cannot maintain the room
temperature, the motor-operated valve (systems with
water reheaters) will begin to regulate (PI regulation) once
the room temperature has fallen to 20 °C.
For systems with electrical reheaters, level 1 will engage
when the room temperature falls to 20 °C. When the room
temperature again reaches 21 °C, the electrical heater will
disengage.
6.3 Operational Reliability
High-pressure pressure switch
In order to prevent the compressor from exceeding its
range of application, there is a built-in high-pressure
pressure switch that will disconnect when the pressure
becomes too high. Activate the red reset button on the
pressure switch
once the cause of the fault has been established.
Safety thermostat
If a fault occurs in the immersion heater for heating of
domestic water, the safety thermostat will disconnect. To
reconnect the safety thermostat, press the small button in
the middle of the thermostat.
The thermostat is located in the middle of the boiler.
Remember to disconnect the power to the system
before engaging in an intervention. Such intervention may
only be performed by
authorised personnel.
Overriding the supply air fan
If the supply air temperature exceeds 45 °C, the speed
of the supply air fan will begin to increase.
The supply air temperature will be maintained at 45 °C, if
possible.
No heat requirement
When neither domestic water heating nor room heating is
required, the compressor stops, but the fans continue to
run and the heat of the extract air is recovered in the
counter current heat exchanger and transferred to the
supply air.
Defrosting
The system begins to defrost when the difference between
the temperature before the cooling coil and the temperature of the cooling coil becomes too big, which occurs when
ice forms on the cooling coil. Solenoid valve MA 4 opens,
the supply air fan and the electrical heaters stop until the
ice has melted and the cooling coil has reached a temperature of about 5 °C. The solenoid valve then closes again,
and the supply air fan and the electrical heating coils start
again.
6.2 Extra Capacity
Immersion heater
If the heat requirement exceeds the capacity of the Combi
unit, the immersion heater can be configured to ON using
the shortcut key in the main menu. When the immersion
heater is set to ON, sensor T7, which is mounted in the
middle of the boiler, will heat the upper part of the DHW
boiler to the temperature that is set.
18
7. MAINTENANCE
To achieve optimal performance, follow the instructions
below:
Before opening the unit, disconnect power /
pull out the plug and wait until the fans have
stopped completely.
Check that the condensation outlet is working
a couple of days after the primary installation.
Environmental requirements
When repairing or dismantling the unit, observe the statutory and environmental regulations and requirements
regarding recycling and destruction of various materials.
7.1 Unit
Filters
Change the filters when the “change filter” alarm flashes on
the display of the control panel. Stop the unit using the
circuit breaker of the unit or the circuit breaker of the
terminal board. Open the front cover/filter drawers and
remove the filters. After changing the filters, reset the filter
timer. The time interval for cleaning/changing the filters can
be adjusted in the operating menu.
The discs are sharp, be careful not to cut yourself.
Do not damage the discs. Vacuum cleaning or
using pressurised air on the filters is not recommended as it may impair filter performance.
G4 = Standard filter (Coarse filter class
G4)
F5 = Fine filter (Fine filter class F5)
F7 = Pollen filter (Fine filter class F7)
Condensed water and condensation outlet
The condensation trays must be cleaned of dirt every
autumn. Fill the condensation trays with water and check
that the water drains away. If not, the outlets must be
cleaned. Also check that the evaporator discs are clean.
Heat exchanger
Inspect the heat exchanger every year. If it is dirty,
take it out and wash it in warm water with soap and
rinse it with a hand shower.
Fans
Inspect the fans for dirt in the fan wheels every year.
Remove the front cover of the unit. Clean the fans with a
brush, a bottle cleaner or a paint brush. Be careful not to
remove the counterbalancing weights on the fan wheels as
this will lead to disequilibrium and cause a higher level of
noise and also wear the fans.
Supply air and extract air valves
Clean the valves by drying with a dry cloth.
Make sure that the valves do not turn around, causing a
change in the air flow.
7.2 Water Circuit and Boiler
Safety valve
In connection with the domestic water boiler, the installer
has fitted a safety valve next to the cold water tap. The
function of this valve is to protect the boiler against
overpressure when domestic water expands under heating.
The non-return (check) valve that is fitted before the safety
valve on the cold water pipe prevents the water from flowing back into the cold water pipe. The pressure increases to
the maximum of the safety valve. Then the safety valve
opens, and the excess water flows away. If the safety valve
does not open, the boiler will burst. To ensure that the safety valve is functional, it should be inspected several times a
year. To test it, press the handle on the safety valve and
ensure that the water can drain away. Damage that has
occurred due to a blocked safety valve is not covered by
the guarantee.
Anode
The enamelled domestic water boiler is fitted with a magnesium anode in the middle of the boiler to prevent corrosion. The estimated lifetime of the anode is about 2 to 5
years It is recommended that the anode be inspected every
two years. Replace it if it is worn out and has a diameter of
about 6 to 10 mm. To inspect the system, disconnect the
power before removing the front cover. Empty the boiler of
water before removing the anode. To do this, close the cold
water supply and connect a hose to the drain valve so that
the water from the boiler can drain out to the closest outlet.
While the boiler is emptying of water, open a hot water tap
to prevent negative pressure from developing in the boiler.
Once the boiler is empty, it is possible to screw off and
inspect the anode.
After reinstalling the anode, close the drain tap,
open the cold water supply, and the boiler will fill again
with water and empty of air. Once the boiler is filled
with water, remount the front cover and
reconnect the power.
7.3 Dismantling/Taking the System Out of
Service
Do as follows:
Disconnect the power supply, i.e. the electric cables.
Disconnect the condensation outlet and the power cables
to any reheater/preheater Disconnect the wires to the
panel and dismantle the ducts. If the system needs to be
taken out of service, dismantle the ducts to avoid condensed water in the system and in the ducts. Close all
supply air and extract air valves.
19
8. TROUBLESHOOTING
8.1 High-Pressure Pressure Switch
The high-pressure pressure switch protects the heat pump
from excessive pressure in the cooling circuit. In the event
of disturbances, the high-pressure pressure switch will
stop the compressor.
The system will restart when the high-pressure pressure
switch is reset manually.
Before unscrewing the front cover, disconnect power to
the system.
Take off the front cover by removing the screws.
8.3 System Is Not in Operation
The system has stopped.
Check the following:
• Is the display illuminated?
• Is the system disconnected via the clock program?
• Is the high-pressure pressure switch disengaged?
• Is the cable between the control unit and the control panel
attached?
• Has the filter been changed? (“Change filter” alarm)
• Frost protection error.
Condensed water is leaking from the unit
Error possibility:
• The condensation outlet is blocked by dirt.
• The condensation outlet is not adequately protected
against freezing at low outdoor temperatures.
• The drain trap is not installed correctly.
8.4 Air Faults
No supply air to the living rooms.
Error possibility:
• Blocked fresh air filter.
• The fresh air filter is blocked by dirt and leaves
in the autumn or by snow and ice in the winter.
• Unit is defrosting.
To RESET, press the red button.
8.2 Immersion Heater's Safety Thermostat
If sensor T7 of the immersion heater is defective, the
safety thermostat ensures that the temperature of the
domestic hot water does not exceed 90 °C.
Before unscrewing the front cover, disconnect power to
the system.
Unscrew the cover plate in front of the immersion heater
and reset the safety thermostat, as indicated in the picture.
To RESET,
press the white button
No extract air from the wet rooms
Error possibility:
• Blocked extract air filter.
Cold supply air
Error possibility:
• The heat exchanger is blocked by dirt or ice.
• Blocked extract air filter.
• “Opening bypass” incorrectly set in the control unit or a
defective bypass.
If it is not one of the faults above, contact:
•
During the warranty period (0-2 years):
the fitter that the unit was bought from.
•
After the end of the warranty period (2 years ->):
the fitter that the unit was bought from or Genvex customer centre (tel.: +45 7353 2700).
Have the data from the rating plate readily available (silver
plate on the unit).
20
THE AIR WE BREATHE
The original Genvex units are
assembled by skilled and
experienced technicians and
have a lifetime that in many cases
is measured in decades. The units
are approved by all applicable
standards and are easy to operate
and service. Last – but not least
all Genvex systems are developed
with focus on compact dimensions
and ease of installation and can be
integrated discreetly in all types of
homes.
We are part of the NIBE Group
– a family of companies that
specialize in supplying hot water,
heating and home comfort to
homeowners worldwide.
All
Genvex
systems are
rated with
energy label
A
Genvex –The original Danish Ventilation System
Genvex is a genuine Danish original. We invented the ventilation system
more than 40 years ago, and we are still ahead of the pack when it
comes to development and production of the strongest and most durable
ventilation system.
Our unit is working in thousands of homes providing fresh clean air
– free of pollen, dust and harmful particles. This helps to strengthen
the health of the house and to make the indoor environment healthy
and comfortable for lots of families. At the same time, our system is
an important element when it comes to saving energy in homes and
in society as a whole – in fact you can recover up to 95% of the heat
energy with a Genvex system.
Please visit www.genvex.dk to see a list of our distributors
08:126-1702
KVM-Genvex A/S • Sverigesvej 6 • DK-6100 Haderslev • Tlf.: +45 73 53 27 00 • salg@genvex.dk • genvex.dk
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