hoxter HOS User manual

HOS
User manual / Bedienungsanleitung / Uživatelský manuál

EN / HOS
User manual 5
DE / HOS
Bedienungsanleitung 25
CZ / HOS
Uživatelský manuál 45

Handover certificate – Copy for the installation company
HOS U parameters
Delta p Setting range 4–20 Pa / Factory setting 4 Pa
LAV Setting range 10–180 s / Factory setting 40 s
Owner
Name
Address
Phone No.
Installation company
Company name
Address
Phone No.
Date and signature Date and signature
The end user has been made familiar with the operating and safety instructions of the combustion control HOS U
and confirms their compliance.
Type of fireplace Woodburning stove, cooker, storage fireplace or fireplace with heating or chimney insert
(fireplace according to DIN EN 12815, DIN EN 13229, DIN EN 13240, DIN EN 15250)
Hot air stove with a heat insert and ceramic hot gas flue
(fireplace insert according to DIN EN 13229)
Masonry heaters according to TROL
Fireplace Manufacturer
Type
Serial number
In case of warranty claim, it is necessary to provide a valid handover certificate.
This certificate needs to be taken into consideration in case of any warranty case or
service. The parameters in this certificate must not be changed. This certificate hast to be
kept till the end of the warranty period or till any change of settings. In case of any settings
change, new handover certificate must be issued. The handover certificate should be
provided to an authorised to the chimney sweeper upon request.
Version HOS A HOS U Installation date
HOS AW HOS AWU Serial number
HOS AU

Handover certificate – Copy for the owner
HOS U parameters
Delta p Setting range 4–20 Pa / Factory setting 4 Pa
LAV Setting range 10–180 s / Factory setting 40 s
Owner
Name
Address
Phone No.
Installation company
Company name
Address
Phone No.
Date and signature Date and signature
The end user has been made familiar with the operating and safety instructions of the combustion control HOS U
and confirms their compliance.
Type of fireplace Woodburning stove, cooker, storage fireplace or fireplace with heating or chimney insert
(fireplace according to DIN EN 12815, DIN EN 13229, DIN EN 13240, DIN EN 15250)
Hot air stove with a heat insert and ceramic hot gas flue
(fireplace insert according to DIN EN 13229)
Masonry heaters according to TROL
Fireplace Manufacturer
Type
Serial number
In case of warranty claim, it is necessary to provide a valid handover certificate.
This certificate needs to be taken into consideration in case of any warranty case or
service. The parameters in this certificate must not be changed. This certificate hast to be
kept till the end of the warranty period or till any change of settings. In case of any settings
change, new handover certificate must be issued. The handover certificate should be
provided to an authorised to the chimney sweeper upon request.
Version HOS A HOS U Installation date
HOS AW HOS AWU Serial number
HOS AU

EN I 9
Content
1. Important warnings 9
2. Package content 10
3. Description of the device 10
4. Description of the connectors and the control unit 13
5. Set-up 15
6. Operating 19
7. Troubleshooting 23
8. Warranty 24
1. Important warnings
1.1 General
· Before using the combustion control, please read the user manual thoroughly and follow the instructions.
· Installation and set-up of HOS combustion system can only be carried out by a specialist or authorised chimney sweeper.
· The prerequisite for the proper functioning of HOS is the correct installation and proper functionality of all its subcomponents.
· Not following the installation and user instructions leads automatically to a loss of warranty.
· Any end-user changes of HOS combustion system are not allowed.
· The handover certificate must be filled in together with the installation company. This report shall be made up in two copies, one
copy for each interested subject. The handover certificate informs about the settings made to the particular device.
· The handover certificate is part of the user manual.
· The device requires a check of proper functionality once a month. This user-check is described in chapter 5.7 Functionality test.
· The handover certificate should be provided to an authorised to the chimney sweeper upon request.
· The HOS combustion control has been tested in TÜV SÜD laboratories and has been approved for the German market by the
technical authority DIBt – Deutsches Institut für Bautechnik.
1.2 Danger due to lack of combustion air or defective gas flue
Always provide a sufficient amount of combustion air for the safe operation of the fireplace.
During the operation, all applicable local laws and regulations must be followed. Furthermore, it must also be in accordance with the
local building regulations.
1.3 Electrical hazards
· The connection to the power grid may only be carried out by a specialist.
· The electrical line must not be under voltage during the installation of the HOS combustion control system, all subcomponents including.
In case of unprofessional installation, there is a risk of injury caused by electricity.
The HOS combustion control does not support combustion air supply.
Built-in ventilation devices can have a negative impact on the function of the HOS combustion control.
These are e.g., ventilation equipment, hood extractors, exhaust air dryers, central vacuum cleaner
systems, etc.
In case of warranty claim, it is necessary to provide a valid handover certificate.

10 I EN
2. Package content
HOS A
no display
HOS A HOS AW HOS AWU HOS AU HOS U
control unit (power supply includ-ing)
wireless display
contactless door sensor
air inlet flap
high temperature sensor
3x heat sensor PT1000
sump for heat sensor PT1000
socket switch for boiler pump * *
socket switch for ventilation de-vice ** ** **
silicone hose
chimney clamp
room pressure nozzle
* socket switch version supplied as standard, on customer‘s request the DIN rail version available
** DIN rail version supplied as standard, on customer‘s request the socket switch version available
3. Description of the device
Electronic combustion control HOS is a device containing some of the following modules or their combination:
· Module A – electronic combustion control – chapters related with this module are marked A
· Module W – primary water cycle control - chapters related with this module are marked W
· Module U – Underpressure watcher - chapters related with this module are marked U
· The chapters related with electronic combustion control without a display are marked
This manual is common to all available versions. Please, consider your own version during the
installation, set-up and operating.
3.1 Description of the function of electronic combustion control – MODULE A A
Module A (fig. 1) controls the burning process by dosing the optimal amount of air for combustion. The contactless door sensor (2)
transmits information about the status of the door to the control unit. When they are opened and then closed, the control unit initiates
the combustion control process. The high temperature sensor (3) measures the current temperature in the fire chamber or flue gas
path. Based on this value, the control unit sets the position of the flap (1) to ensure the supply of the optimal amount of air.
If you have a version with a wireless display (4), the display shows the temperature measured by the temperature sensor, the burning
phase and the burning time.

EN I 11
fig. 1 / / HOS Connection - MODULE A
3.2 Description of the function of primary water cycle control – MODULE W W
Module W (fig. 2) regulates the circulation pump depending on the temperature values measured by the heat sensors. The switching
of the circulation pump (A) by the switch (7) is controlled based on ratio of values measured by heat sensors in the heat exchanger (4)
and in the accumulation tank (5) and (6). The wireless display (8) shows the value of the water temperature in the exchanger (4), the
percentage charge of the accumulation tank and the status of the circulation pump (A). Module W can only be used in combination
with module A.
fig. 2 / HOS Connection - MODULE W
1
2
3
4
HOS
A
1
2
3
4
A
7
8
5
6
HOS
AW

12 I EN
3.3 Description of the function of underpressure watcher – MODULE U U
Module U (fig. 3) allows, based on the difference between underpressure values in the flue gas path and pressure in the room, short-
term disconnecting of the ventilation systems (kitchen hood, recuperation, or other ventilation equipment in the house) from operation.
High temperature sensor (1) activates the measurement of underpressure in the chimney (2) and room pressure (B). If the safe value of
the difference between these pressures is not ensured, the switch (3) will temporarily disable the ventilation unit (A). Once the safety
time limit has expired and the underpressure difference is save, the unit is put back into operation.
Only two consecutive disconnections of the ventilation system are allowed. If the ventilation system is disconnected for the third time
within 24 hours, it will not be put back into operation. The device can only be turned on again by manual restart. Within 24 hours, such
restarts can be performed three times through the wireless display, the fourth restart must be performed physically on the control unit
of the device only. The wireless display (4) shows the current difference between the room pressure (B) and the pressure in the flue
gas path (2) as well as the status of the ventilation unit (A).
fig. 3 / HOS connection - MODULE U
1
2
3
A
4
HOS
U
B

EN I 13
4. Description of the connectors and the control unit AWU
1. Connect all installed components with the control unit (fig. 4).
2. Components can be plugged in in any order.
3. Connect the control unit (with the provided power adapter) into the 230 V power supply (fig. 5).
4. HOS electronic control has now been installed and you can move to the SET-UP phase.
5. The prerequisite for the proper functioning of HOS is the correct connection and proper operation of all connected components.
fig. 4 / Face 1 of HOS regulation and connection diagram of components
S1 AT TK T1 T2 T3
DR DK
KP1 LA1
MODULE A
MODULE W
MODULE U
S1 - air inlet flap
AT - high temperature sensor
TK - door sensor
KP1 - circulation pump switch
T1 - PT1000 fireplace heat
exchanger heat sensor
T2 - PT1000 top accumulation tank
heat sensor
T3 - PT1000 bottom accumulation tank
heat sensor green connector
3 pins
green connector
2 pins
blue
connector
orange connector
green
connector
yellow
connector
red
connector
white
connector
blue
connector
black
connector
LA1 - switch of
ventilation device
DK - chimney clamp with
pressure measuring input
DR - hose for measuring
room pressure

14 I EN
fig. 5 / Face 2 of HOS regulation and connection diagram, description of HOS signalling
For proper function of the combustion control, the manual air control must always be fully opened.
Green
indicates:
normal function
of module U
Orange
indicates:
ventilation device
temporarily switched off
Red
indicates:
ventilation device permanently
switched off / module U
malfunction (error number
onthe display)
Green
indicates: normal function
of modules A and W
Orange
indicates: door opened
Red
indicates: malfunction ofmodule
A or W (error number on
thedisplay), air supply flap is
opened, ciruclation pump is on
MODULE U
MODULE A (+ W)
Button for module U
restart
Button for pairing with
wireless display and for
restart (modules A and W)
Power adaptor of
control unit (24V)
Sensor for
pairing with
wireless display

EN I 15
5. Set-up
5.1 Wireless display and control unit pairing AWU
For pairing wireless display and control unit, follow the instructions bellow (fig. 6):
1. Make sure all the components are properly connected to the control unit and that the diodes on its back does not indicate any error.
In case of any error message, solve the error first in order to continue the pairing procedure.
2. Open the battery cover on the back of the wireless display, insert two AAA-sized alkaline batteries (included) and close the battery
cover.
3. The pairing symbol appears on the wireless display:
4. Bring the wireless display closer to the pairing sensor on the back of the control unit (max. 15 cm).
5. Press the SYS button on the back of the control unit.
6. The start of the pairing process is accompanied by a slight vibration of the wireless display.
7. Successful pairing is confirmed by a short beep.
8. The controller has now been paired with the control unit.
≤ 15 cm
fig. 6 / Pairing the wireless display with the control unit

16 I EN
5.2 Settings of the control unit parameters – menu SETTINGS AWU
1. Wake up the wireless display from stand-by mode by moving it (take it in your hand)
2. Enter the SETTINGS menu by long pressing (2s) of the OK button
3. Use the arrow keys in the menu to confirm the choice by short pressing OK
·MODUL A – setting the values of the „electronic combustion control module“
·MODUL W – setting the values of „primary water cycle control“
·MODUL U – setting the values of „underpressure watcher„
·TEST – test the basic functions of each connected device
·RESET – factory settings of modules A and W (module U can not be reset for safety reasons)
5.3 Settings of the combustion control parameters (MODUL A) A
1. Choose MODUL A in the HOS main menu to open the combustion control settings
2. After entering the MODUL A, use the arrows to select:
·T-START temperature setting after which the combustion control process starts
·EP setting the burn-out phase, when the air flap is fully closed
3. T-START is set to 180 °C by default. Use the arrows to edit the temperature in a range 80–250 °C. Press OK to confirm. Choose
the temperature depending on the position of the high temperature sensor. If the temperature T-START is not reached, the
control process will not start!
4. EP is set to 0 by default. Use the arrows to edit the EP in a range of -5 to +10. Changing these values affects the start of the phase
when the combustion control completely closes the air supply flap (switches to phase Po5, see fig.7) If the flap closes too early,
select positive values to extend the glowing phase. If the flap closes too late, select negative values to shorten the glowing phase.
MODUL A
MODUL W
MODUL U
TEST
RESET
MODUL A
T-START
EP
T-START
Po1 Po2 Po3 Po4 Po5 Time
Temperature
Only purchased modules are available in the main menu. The TEST module is displayed only when the
fireplace insert is out of order (not burning).
fig. 7 / Burn curve with a picture of the individual combustion phases

EN I 17
5. Confirm the selected value by pressing OK button.
6. Select and confirm with the OK button to return to the main menu.
5.4 Settings of the circulation pump parameters (MODUL W) W
1. Choose MODLE W in the HOS main menu to open the circulation pump settings
2. In the MODULE W menu, select
· KP-START temperature setting (fireplace heat exchanger) of the start of the circulation pump
· KP-STOP temperature setting (fireplace heat exchanger) of the stop of the circulation pump
· WT-DIFF the difference between the water temperature in the heat exchanger and the average water temperature
in the accumulation tank. The circulation pump starts when the value WT-DIFF is reached.
· FT setting of the limit temperature in the fire chamber to start/stop the circulation pump
· ALARM setting of the percentage value (accumulation tank charge). When value reached, sound notification starts.
· KPA regular start of the circulation pump function (off-season)
3. KP-START default set to 65 °C. Use the arrows to edit the temperature in a range 60–75 °C. Press OK to confirm.
4. KP-STOP default set to 60 °C. Use the arrows to edit the temperature in a range 50-70°C. Press OK to confirm. (The device does
not allow setting the KP-STOP value higher than KP-START value.)
5. WT-DIFF default set to 5. Use the arrows to edit the value in a range 0–10. Press OK to confirm.
6. FT default set to 65 °C. Use the arrows to edit the temperature in a range 60–100 °C. Press OK to confirm.
7. ALARM default set to 80 %. Use the arrows to change it in the range of 75–90 %. Press OK to confirm.
8. KPA default set to ON. Use the arrows to turn it OFF. If this parameter is active, the circulation pump starts once every 14 days for
3 minutes. After each restart of the device, the pump starts for 3 minutes as well.
9. Select and confirm with the OK button to return to the main menu.
MODUL W
KP-START
KP-STOP
WT-DIFF
FT
ALARM
KPA
5.5 Settings of the underpressure watcher parameters (MODUL U) U
1. For safety reasons, MODUL U menu is only available for specialists
The KP START temperature value must always be at least 5 °C higher than the KP STOP value. If you
set KP START or KP STOP out of this range, the second (not chosen) temperature will be updated
automatically in order to meet this condition.

18 I EN
2. In the MODULE U menu, following parameters can be set:
·DELTA p – the pressure difference between the pressure in the flue gas path an d the pressure in the room. If the pressure
lower than DELTA p is reached for the time period defined by parameter LAV, the air ventilation is temporarily disconnected.
Ifthe pressure higher than DELTA p is reached for the time period defined by parameter LAV, the air ventilation is put back
intooperation.
·LAV – the time delay to switch off and turn on the ventilation device if the condition DELTA p is met.
3. DELTA p default set to 4 Pa. Use the arrows to change it in the range of 1–20 Pa. DELTA p must be set by specialist and the
installation must be confirmed by chimney sweeper.
4. LAV – default set to 40 s. Use the arrows to change it in the range of 10–180 s. LAV must be set by specialist and the installation
must be confirmed by chimney sweeper.
5.6 Functionality test AWU
1. Choose TEST in the HOS main menu to open the test settings. The TEST menu is only available when no other module is
activated and the temperature in the fireplace unit is lower than 35 °C.
2. In the TEST menu, select
· KLAPPE – air inlet flap testing
· KP – testing of the circulation pump switch
· LA – testing of the ventilation device switch
3. KLAPPE – by selecting this option, the air flap can be checked in all positions
4. KP – by selecting ON/OFF the circulation pump is turned ON/OFF
5. LA – by selecting ON/OFF the ventilation device is turned ON/OFF
6. Select and confirm with the OK button to return to the main menu
7. After leaving the TEST menu, all parameters are returned to the original values set before entering the TEST menu
8. If the remote control is in TEST mode, it will never be put into the standby mode
5.7 Factory settings AWU
1. In the RESET menu, you can return the values of the MODULES A and W to the factory settings. MODULE U can only be reset
byspecialist
2. Confirm the option with the OK button and your changes will be irreversibly deleted and you will be return to the main settings menu
3. Select and confirm with the OK button to return to the main menu
TEST
KLAPPE
KP
LA
By returning to factory settings, your settings will be irreversibly deleted.
MODUL U
DELTA p
LAV

EN I 19
6. Operating
6.1 Wireless Display AWU
The wireless display (fig. 8) consists of two parts, the upper (information) and the lower (control). Device status is displayed in
theupper part of the display. The bottom of the display is touch-sensitive and is used to change the displayed information.
To turn the wireless display on, take it in your hands (motion control). When not used for 10 seconds, the display gets in the
standbymode.
00:30
OK
Po 3
Control zone
Ventilation status
Notifications and alarms
Burning time
Basic information menu
Pump status
fig. 8 / Wireless display

20 I EN
6.2 Displayed information
The wireless display consists of two parts, the upper information and the lower control. Device status information is displayed at the
top of the display. The bottom of the display is touch-sensitive and is used to change the displayed information.
Circulation pump status
Pump status W
If the symbol is on, the hot water circulation pump is in operation.
Basic information menu
During standard operation, the display shows the following information. Use the arrow keys to switch the information.
150 °C
Temperature in the fire chamber A
Value of the current temperature in the burning chamber measured by a temperature sensor.
Po 3
Flap position A
Shows the current position of the air inlet flap. The damper can be in any position between Po1 (fully open air supply) and Po5
(closed air supply). The burning curve (fig. 9) is not fixed, but is dynamic and individually evaluated for each burning process
based on the maximum achieved temperature (T-MAX) in phase Po2.
· Po1 – first position. This phase begins when the fire chamber door is opened and closed and ends when the starting
temperature Tstart is reached. The starting temperature depends on the program that is set-up.
· Po2 – second position. The second phase begins when the starting temperature Tstart is reached and lasts at least 15 minutes
after closing the door. The maximum temperature Tmax is reached in this phase.
· Po3 – third position. This is the phase of active burning.
· Po4 – fourth position. Phase of active burning where the air flap lets the smallest amount of air in the combustion chamber.
· Po5 – fifth position. Phase of glowing coals without access of combustion air. The air flap is fully closed.
· Po0 – position zero – inactive phase where the air flap is closed. The temperature in the combustion chamber is below 50°C.
T-START
Po1 Po2 Po3 Po4 Po5 Time
Temperature T-MAX
fig. 9 / Burn curve with a picture of the individual combustion phases