ACV Compact Condens 170 User guide

A1003043 - 664Y7200 • A
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170 - 210 - 250 - 300
Compact Condens
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
for the Installer and the User

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TABLE OF CONTENTS
GENERAL RECOMMENDATIONS....................................................................................3
Safety Instructions........................................................................................................................................................................3
USER’S GUIDE...................................................................................................................4
Meaning of Symbols....................................................................................................................................................................4
Boiler Marking................................................................................................................................................................................5
Control Panel and Display.........................................................................................................................................................6
What to Check on a Regular Basis ..........................................................................................................................................7
Lockout Screen..............................................................................................................................................................................7
In case of Problem........................................................................................................................................................................7
Boiler Setup Guide for the User...............................................................................................................................................8
User’s menu and parameter descriptions ...........................................................................................................................9
INSTALLER’S GUIDE.......................................................................................................10
Principles of Operation.............................................................................................................................................................10
Boiler Setup Guide for the Installer......................................................................................................................................11
Installer’s menu and parameter descriptions..................................................................................................................12
APPLIANCE DESCRIPTION............................................................................................15
Models - Compact Condens 170- 210 - 250 - 300 ..........................................................................................................15
TECHNICAL CHARACTERISTICS..................................................................................16
Dimensions ...................................................................................................................................................................................16
Combustion Characteristics ...................................................................................................................................................17
Gas Categories.............................................................................................................................................................................17
Electrical Characteristics Compact Condens 170 - 210 - 250 - 300 ..........................................................................18
NTC resistance..............................................................................................................................................................................18
Wiring Diagram and Electrical Connections....................................................................................................................18
Pneumatic Connections.......................................................................................................................................................... 20
Hydraulic Characteristics ........................................................................................................................................................ 20
Hydraulic Pressure Drop Curve of the Boiler................................................................................................................... 20
Maximum Operating Conditions......................................................................................................................................... 20
Recommendations for the prevention of corrosion and scaling in Heating Systems......................................21
INSTALLATION ..............................................................................................................22
Safety Instructions for the Installation .............................................................................................................................. 22
Package Contents...................................................................................................................................................................... 22
Tools Required for the Installation...................................................................................................................................... 22
Boiler preparation...................................................................................................................................................................... 22
Heating connection.................................................................................................................................................................. 23
Removal and Installation of the Front and Side Panels............................................................................................... 23
Chimney Connection ................................................................................................................................................................24
Calculation of the Flue Pipe Length ................................................................................................................................... 25
Gas connection........................................................................................................................................................................... 26
System Congurations............................................................................................................................................................. 26
Boiler load settings ................................................................................................................................................................... 26
Basic Conguration - Compact Condens: High Temperature Heating Circuit Controlled by Room Ther-
mostat and Optional Outdoor Sensor................................................................................................................................27
STARTING UP .................................................................................................................28
Safety Instructions for Starting up...................................................................................................................................... 28
Tools Required for Starting up.............................................................................................................................................. 28
Checks before Starting up...................................................................................................................................................... 28
Starting up the Boiler ............................................................................................................................................................... 29
Checking and Adjusting the Burner................................................................................................................................... 29
MAINTENANCE..............................................................................................................30
Safety Instructions for the Boiler Maintenance.............................................................................................................. 30
Tools Required for Maintenance.......................................................................................................................................... 30
Boiler Shut-down for Maintenance..................................................................................................................................... 30
Periodic Boiler Maintenance Tasks...................................................................................................................................... 30
Draining the Heating Circuit of the Boiler.........................................................................................................................31
Removal, Check and Installation of the Burner Electrodes ........................................................................................31
Removal, Check and Installation of the Burner...............................................................................................................32
Cleaning the Exchanger...........................................................................................................................................................33
Restarting after Maintenance ................................................................................................................................................33
TROUBLESHOOTING....................................................................................................34
Errors (hard and soft lockouts) ..............................................................................................................................................35
LOCKING CODES ...........................................................................................................36
SERVICE LOG..................................................................................................................39
DECLARATION OF CONFORMITY...............................................................................40

NOTE
This manual contains important information with respect to the installation, the starting up and the
maintenance of the appliance.
This manual must be provided to the user, who will read it carefully and keep it in a safe place.
We accept no liability should any damage result from the failure to comply with theinstructions
contained in this technical manual.
Essential recommendations for safety
• It is prohibited to carry out any modifications to the appliance without the
manufacturer’s prior and written agreement.
• The product must be installed by a qualified engineer, in accordance with
applicable local standards and regulations.
• The installation must comply with the instructions contained in this manual and
with the standards and regulations applicable to heating systems.
• Failure to comply with the instructions in this manual could result in personal
injury or a risk of environmental pollution.
• The manufacturer declines all liability for any damage caused as a result of
incorrect installation or in the event of the use of appliances or accessories that are
not specified by the manufacturer.
Essential recommendations for the correct operation of the appliance
• In order to ensure that the appliance operates correctly, it is essential to have it
serviced by a certified installer or maintenance contractor every year.
• In case of anomaly, please call your service engineer.
• Faulty parts may only be replaced by genuine factory parts.
General remarks
• The availability of certain models as well as their accessories may vary according to
markets.
• The manufacturer reserves the right to change the technical characteristics and
features of its products without prior notice.
• In spite of the strict quality standards that ACV applies to its appliances during
production, inspection and transport, faults may occur. Please immediately notify
your approved installer of any faults.
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If you smell gas:
- Immediately isolate the gas supply.
- Open windows and doors to ventilate the area.
- Do not use any electrical appliances and do not operate any switches.
- Immediately notify your gas supplier and/or your installer.
GENERAL RECOMMENDATIONS
SAFETY INSTRUCTIONS
Essential recommendations for safety
• Do not store any flammable or corrosive products, paint, solvents, salts, chloride
products and other detergent products near the appliance.
• Make sure that the condensate outlet is never obstructed and that a condensate
neutralisation system is installed if required.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
supervised or unless they have been given instruction concerning the use of the
appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
General remarks
• The end user is only allowed to carry out the basic set-up operations mentioned in "Boiler
Setup Guide for the User" on page 8, after he has received all relevant instructions
from the installer. Any other set-up must be carried out by an approved installer.
• If the end user misuses the installer code to access installer-specific parameters and
makes changes that cause a system failure, any warranty claim will be void.

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USER’S GUIDE
MEANING OF SYMBOLS
Symbols on the
packaging Meaning
Fragile
Keep dry
Keep standing, up
Danger of tipping over
Hand truck or pallet truck required for transport
Do not cut packaging to open
Do not stack
Symbols on the
appliance Meaning
Heating circuit
Domestic Hot Water circuit
Symbols in the
manual Meaning
Essential recommendation for safety (safety of persons and equipment)
Essential recommendation for electrical safety (electrical hazard)
Essential recommendation for the correct operation of the appliance or the
system
General remark

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USER’S GUIDE
The part number (Typ) and serial
number of the appliance are
indicated on its rating plate and
must be provided to ACV in case
of warranty claim. Failure to do
so will make the claim void.
BOILER MARKING
Location: At the back of the boiler
Compact Condens 210
Compact Condens 170
Compact Condens 250
Compact Condens 300
SPECIMEN
SPECIMEN
SPECIMEN
SPECIMEN

14
235Red keys: Allow to select specic items on the display,
as well as increase/decrease the values shown on spe-
cic screens (when associated with “+” or “-” symbol on
the display) or go back to the previous screen (when
associated with “” on the display). See the example
below.
Home screen : It shows the status of CH and DHW
circuits (ON or OFF, as dened by the user/installer in
the setup), the activation of the anti-freeze function,
the current temperature of ???, the current pressure,
the operation of the circulation pump, the current
date and time. A ame symbol is also displayed
when the unit is red.
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USER’S GUIDE
CONTROL PANEL AND DISPLAY
Panel Description
1. Pressure gauge - Indicates the primary circuit pressure (min. 1 bar when cold).
2. MAXSYS LCD Display - It is the setup interface of the boiler and indicates the parameter values,
the error codes and the set-up status of the parameters. It displays a series of screens, each showing
information and/or icons.
3. Keypad - to browse through the screens of the MAXSYS controller, set up the boiler, increase and
decrease the displayed values and validate the selections and access the User or Installer set-up
screens. See detail on the right.
4. ON/OFF master switch of the boiler - To turn the appliance ON and OFF.
5. 5A Fuse - To protect the electrical system of the boiler.
Key Function
To scroll up the menus on the display
ok To validate a selection or a value
To scroll down the menus on the display
esc To exit a screen and go back to the Home screen
menu To access the User / Installer menu selection screen
To activate the“Holiday function”
To put the boiler in OFF mode
TR To enable/disable the CH and DHW functions
eco
To enable the ECO function
Tuesday, 16 February 2016
12:56
45
2.0
esc
ok menu
eco
Press this key to access
the User menu
Press this key to access
the Installer menu
Press this key to go
back to the previous
screen
esc
ok
menu
eco
USER
TECHNICIAN

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USER’S GUIDE
WHAT TO CHECK ON A REGULAR BASIS
Essential recommendations for the correct operation of the appliance
ACV recommends to check the system at least every 6 months as follows:
• Check that the system water pressure is at least 1 bar when cold. If the pressure drops
below 0.8 bar, the built-in pressure sensor blocks the appliance until the pressure
exceeds 1.2 bar.
• If it is required to top up the system to maintain the minimum recommended water
pressure, always turn the appliance off and only add small amounts of water at a time. If a
large amount of cold water is added in a hot boiler, the boiler can be damaged definitively.
• If the system needs to be refilled repeatedly with water, please contact your installer.
• Check that there is no water on the floor under the boiler. If there is, please call your installer.
• If a condensate neutralisation system is installed, check it and have it cleaned regularly.
• Check regularly that there is no error code (lockout) flashing on the display. Refer to
paragraph below.
IN CASE OF PROBLEM...
Check the list of faults and corresponding codes below to get the solution(s). If no solution is provided here,
please contact your installer who will determine the correct solution.
Fault
code Problem Possible Cause(s) Solution
-
The appliance does
not turn on when
pressing the ON/OFF
Master switch
No power supply
Check the power supply and that
the appliance power plug is con-
nected to the network.
E1 Failed ignition The burner failed to light af-
ter 3 ignition attempts Check gas supply to the boiler.
E13 Reset limit reached Resets are limited to 5 every
15 minutes
Turn unit OFF and ON to resume
normal operation.
E34 Low voltage
Line voltage has fallen be-
low an acceptable operating
level
The boiler will automatically reset
once line voltage returns to normal.
E37 Low Water
Water pressure has fallen
below an acceptable oper-
ating level (0.8 bar)
Rell the system to reach a normal
range pressure.The boiler will auto-
matically reset once water pressure
returns to normal.
E94 Internal Display Fault Display memory error Turn appliance o and on to re-
sume normal operation.
LOCKOUT SCREEN
If a problem occurs, the Lockout screen replaces the Home screen. The error is indicated by a code and
message on the display. Pressing the OK key will reset the boiler.
Using the code on the display, solve the problem with the table on the right, then reset the boiler.
If the problem cannot be solved and/or if the code is not provided in this table, please contact your
installer.

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USER’S GUIDE
BOILER SETUP GUIDE FOR THE USER
The main parameters of the Compact Condens boilers can be set up by the user using the user setup func-
tion of the controller. It allows the user/installer to quickly setup the appliance for immediate operation
according to the system conguration.
A more extensive menu is also provided for the Installer, refer to“Installer’s menu and parameter descrip-
tions”on page 12.
Accessing the User menu - Press the “menu” key from the green keypad to access the screen shown
below
esc
ok
menu
eco
USER
TECHNICIAN
Press this key to
access the User menu
The selection is highlight-
ed. Scroll up and down
the menu by pressing the
“” and “ ” keys from the
green keypad.
Validate your selection by
pressing the“OK” key from
the green keypad.
Through the User menu, the following parameters can be set :
Heating The user can dene the CH set point, the outside temperature at which the heat-
ing must be stopped (Outside air temp. sensor required), the temperature reduc-
tion for the Eco mode, and he can schedule the operation of the CH circuit.
Domestic Hot Water When an external DHW tank is installed in the system, the user can dene the
DHW set point, the temperature reduction for the Eco mode, as well as schedule
the operation of the DHW circuit.
Holiday This menu allows to dene the CH and DHW set points applicable in holiday
mode.
Maintenance This function provides informations related to the maintenance operations (con-
tact details and maintenance due date).
Settings In this menu, various general settings can be dened, such as language, units,
date, time, etc.
Diagnostics In the diagnostics, the user can nd the boiler usage information as well as the
history of errors.
For a detail of the user’s menu screens and descriptions, see the diagram on next page.
esc
ok menu
eco
to confirm
ok
1. HEATING
2. DOMESTIC HOT WATER
3. HOLIDAY
4. MAINTENANCE
5. SETTINGS
6. DIAGNOSTICS

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USER’S GUIDE
USER’S MENU AND PARAMETER DESCRIPTIONS
HEATING
DOMESTIC HOT WATER
HOLIDAY
MAINTENANCE
SETTINGS
CHIMNEY SWEEP
DIAGNOSTICS
1. CH temperature/OTC set
2. Eco set point reduction
3. Scheduler set
1. DHW set point
2. Eco set point reduction
3. Scheduler set
1. CH holiday set point
2. DHW holiday set point
1. Service information
2. Service due date
1. Select language
2. Select units
3. Set date
4. Set time
5. Restore factory data
1. Boiler information
2. Lockout history
CH set point
Outside temperature for CH o
Enable/disable on-board scheduler
Scheduler set
Enable/disable on-board scheduler
Scheduler set
The Heating menu allows to:
1. Set the CH temperatures and OTC curve parameters :
• CH set point : to adjust the set point of ow temperature
• Outside temperature for CH o : to set the external temperature at which
heat demand is stopped.
2. Set the temperature that will be subtracted from actual set point if ECO mode is
active, through the Eco set point reduction.
3. Display the scheduler menu
• Enable/disable scheduler: to Enable or disable the CH scheduler, and make
external control possible.
• Scheduler set: to program scheduler according to the days of the week.
The Domestic Hot Water menu allows to:
1. In case there is a sensor, set the actual DHW temperature and in case there is a
switch in the DHW circuit, set the base boiler ow temperature.
2. Set the temperature that will be subtracted from actual set point if ECO mode is
active, through the Eco set point reduction.
3. Display the scheduler menu
• Enable/disable scheduler: to Enable or disable the DHW scheduler, and
make external control possible.
• Scheduler set: to program scheduler according to the days of the week.
The Holiday menu allows to:
1. Set CH ow temperature when holiday mode is active
2. Set DHW temperature when holiday mode is active
The Maintenance menu allows to:
1. Display the service company phone nr. or any other entered information.
2. Show next service due date. When expired, an indication shows on the screen.
1. Pressing OK enables/disables the chimney sweep mode (adjustable in %)
The Diagnostics menu allows to:
1. Display the following information: CH request, DHW demand, Firing rate (in %)*, Flame ionization current (µA)*, boiler set point*, boiler sup-
ply temperature*, return temperature*, ue temperature*, outdoor temperature*, DHW storage temperature*, boiler fan speed (rpmx50),
CH ignition (number), CH runtime (in hours), DHW ignitions (numbers), DWH runtime (in hours), system pressure (water pressure in bar/psi)
(Items with an * at the end will open a graph that shows the latest 120 variable values stored every 12 minutes (24 hours history) when pushing OK).
2. Display the lockout history. Pushing the highlighted error OK will open a screen that contains details on the boiler status when error occurred.
The Settings menu allows to:
1. Select the language (English or German). The current language is highlighted
2. Select the temperature unit. The current unit used in the controller is highlighted.
3. Set the date.
4. Set the time, after selecting the time format (24/12 hours).
5. Restore the user settings to original default factory settings (following the instructions on the screen).
1. Chimney sweep

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INSTALLER’S GUIDE
PRINCIPLES OF OPERATION
General
The Compact Condens is a room sealed boiler, equipped with a cast aluminium heat-exchanger. The boil-
er is provided with a heating circuit, but no internal Domestic Hot Water production tank. However, an
external DHW tank can be installed in the system. Refer to“System Congurations”on page 26
The CH circuit is not provided with a CH-pump. The installer must therefore install one in the system,
whose hydraulic resistance will match the hydraulic resistance of the boiler(s) and system. Please contact
your ACV representative for the correct accessories.
The Compact Condens boilers (both CH and DHW circuits) are controlled by the MAXSys processor.
Heating Circuit
The heating circuit can be controlled through:
• On-o room thermostat (standard) - As standard the boiler is programmed for using an on-o
room thermostat. The desired ow temperature is adjustable, but as standard is set to 80 °C. At CH
heat request from the room thermostat (and no DHW heat request present) the CH-pump is activat-
ed after 10 seconds. The controller will adjust the burner-input in such a way that a ow-tempera-
ture of 80 °C towards the CH-circuit is achieved.
• 0-10V signal (optional) - The boiler can be programmed for using a 0-10 VDC signal (must be dis-
turbance-free). The maximum desired ow temperature is adjustable, but as standard set to 80 °C.
Please contact your ACV representative for more details and the correct accessories.
• Outside Temperature Control OTC (optional) - The boiler is prepared to work with an outdoor sen-
sor. The sensor should be installed on the north-side of the building at a height of approximately 2
meters. Once it is connected to the terminal strip of the boiler, the outdoor sensor is automatically
detected by the controller. Please contact your ACV representative for more details and the correct
accessories.
• Digital communication (optional) -The boiler is also prepared for digital communication with room
thermostats with communication protocols like Open-Therm (automatically recognised if correctly
connected to the terminal strip). Please contact your ACV representative for more details and the
correct accessories.
Domestic Hot Water preparation (DHW)
External storage tank with thermostat - As standard the DHW conguration is set to use storage tank
+ tank thermostat.
For hydraulic connection of an external storage tank to the boiler one should either use a :
• 230 VAC DHW pump (Default conguration 2 Pump: DHW- and CH pump)
• Electric 3-way valve.
DHW heat request for warm water is generated when the thermostat closes. The tank thermostat also
determinates the hysteresis (dierence in ºC between on and o of the boiler) for keeping the storage
tank at temperature.
The standard storage tank set temperature is 80 ºC .
During operation the boiler will heat up until a ow temperature of 80 ºC is reached.
In case of a CH heat request, immediately after finishing the heat request for DHW, there is
a chance of hot water flowing into the CH system (hot shot).
External storage tank with NTC sensor - In case the storage tank is equipped with an NTC sensor, adjust set-
ting in technician menu, advanced DHW settings, refer to“Boiler Setup Guide for the Installer”on page 11.
The resistance of the NTC sensor must have a value of 12 kOhm at 25 °C.
Heat request and keeping on temperature of the storage tank is done at an adjustable temperature (de-
fault set at 65°C).
In case of a CH heat request, immediately after finishing the heat request for DHW, there is
a chance of hot water flowing into the CH system (hot shot).
General behaviour with external storage tank
Disabling/Enabling warm water operation : press Summer-Winter button.
In some countries, at outputs ≥ 40 kW double separation between exchanging media is
required.
Safety features
The Compact Condens features various safety devices to protect the boiler and the complete system:
• Main fuse (5A), located near the On/O switch, on the right side of the control panel
• Syphon pressure switch, connected to the sump (P1), prevents overow of the syphon in case of
too high back pressure in the chimney
• Overheat limit switch(thermostat), set at 105°C.
• Air pressure switch, connected to the venturi, checks the amount of air (by means of a Δp meas-
urement) before start.
• A Frost protection mechanism: This function protects the boiler only, not the system. As soon as
the ow temperature drops below 8°C, the central heating pump is activated. As soon as the ow
temperature is at 6°C, the burner starts up at minimum load until the ow temperature rises to 15°C.
The CH-pump will continue to run for 10 minutes. The function can be enabled or disabled through
the installer menu. When the frost protection is disabled, only the pump operate.
• An anti-freeze function is also available using a frost thermostat connected in parallel with the
room thermostat. Another possibility is the use of an outdoor sensor in combination with OTC set-
tings (to be set by the installer).The CH pump will be activated if the outdoor temperature drops
below 8 ºC. In order to enable the Compact Condens boiler to protect the whole system against
freezing, all the valves of the radiators and the convectors should be completely open.
Other features
Eco working mode -When the Eco button (
eco
) is pressed a programmable value is substracted from the
ow temperature set point.
Holiday mode - When the Holiday button ( ) is pressed a request is indicated to enter the start and
end date of the holiday period. The wished ow temperature and the DHW temperature for this period
can be set.

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INSTALLER’S GUIDE
BOILER SETUP GUIDE FOR THE INSTALLER
The parameters of the Compact Condens boilers can be set up by the installer using the Technician setup
function of the controller. It allows the installer to setup extensively the appliance according to the system
conguration.
Accessing the Installer menu - Press the“menu” key from the green keypad to access the screen shown
below. Then type the Installer code “231” using the red keys corresponding to the“+” and“-” signs on the
display..
Press this key to
access the Installer
menu
esc
ok menu
eco
Insert code
To select
to confirm
ok
Press the corresponding red
keys to reach the desired value
for the selected number. Then
press the “ok” key to go to the
next position.
The following parameters can be accessed by the installer.
1. ADVANCED CH SETTINGS
2. ADVANCED DHW SETTINGS
3. SYSTEM SETTINGS
4. DIAGNOSTICS
5. USER SETTINGS
6. RESTORE FACTORY SETTINGS
See the following pages for more details.
Start up process
During heat demand the pump is activated by the controller. After zero-check of the air pressure switch
the fan speeds up to airow-check fan speed. Once the air pressure switch is closed the fan goes to igni-
tion fan speed.
After 5 seconds pre-purge on ignition fan speed, the water pressure sensor, gas pressure switch and si-
phon pressure switch are checked. When all pressure switches are closed and the water pressure is OK,
the ignition is released.
The temperature control and safeguarding is done with the use of NTC’s. Data coming from these NTC’s is
processed by the controller (Maxsys) that takes care of control and safe-guarding of the boiler.
“Slow start” principle
Standard setting of the boiler involves the “slow start” principle in order to avoid the boiler and installa-
tion to heat up too quickly.
After“zero check”APS and closure APS with pre purge, ignition starts. After a stabilizations time the boiler
modulates down to low capacity and stays there for 1 minute. Subsequently the boiler speeds up at a
rate of 4 °C/min till set capacity or set temperature has been reached. Once heat demand has nished the
boiler will stop after its set pre-purge period.
Press the corresponding red
keys to get back to the user/in-
staller selection screen.
esc
ok
menu
eco
USER
TECHNICIAN

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INSTALLER’S GUIDE
INSTALLER’S MENU AND PARAMETER DESCRIPTIONS
ADVANCED CH SETTINGS
ADVANCED DHW SETTINGS
SYSTEM SETTINGS
DIAGNOSTICS
USER SETTINGS
RESTORE FACTORY SETTINGS
1. CH power set
2. CH temperatures
3. OTC settings
4. CH pump settings
5. CH Anti cycling timer
6. 0-10VDC Input Settings
7. High Voltage Input settings
1. DHW power
2. DHW temperatures
3. DHW pump settings
4. DHW request type
Maximum power
Minimum power
Maximum power
Minimum power
Switch
Sensor
Absolute max temperature
CH maximum set point
CH minimum set point
CH set point hysteresis
Storage temperature set point
Boiler temperature set point
DHW set point hysteresis
Curve calculation
OTC parameters
OTC set point table
OTC curve
Post Pump Time
DHW Post Pump Time
Conguration
Regulation
The Advanced CH Settings menu allows to:
1. Set % of boiler maximum / minimum power in CH mode
2. Show and set boiler CH temperatures:
• Set absolute CH max temperature that CH circuit will never exceed
• Set the maximum CH set point
• Set the minimum CH set point
• Sets CH set point hysteresis (temperature above set point at which boiler
will switch o)
3. Set OTC settings:
• Curve calculation (2 points calculation, 4 point calculation, CH set point).
• OTC parameters (Outside temp for max. CH, Outside temp. for min. CH, Out-
side temp. for CH o).
• OTC set point table (Show in a table the link between external temperature
and actual set point determined by OTC parameter selection).
• Show the curve for OTC temperatures.
4. Adjust pump related parameters
• Pump overrun time after heat demand
5. Determines minimum time between boiler stop and next ignition
6. Determines the use of a 0-10 V signal to control the system
• Conguration: WP sensor, analog voltage input
• Regulation: set point percentage
7. This function is not active
The Advanced DHW Settings menu allows to:
1. Set % of boiler maximum / minimum power in DHW mode
2. Show and set DHW temperatures
• Sets ow temperature during DHW demand coming from thermostat
(switch)
• Sets ow temperature during DHW demand coming from sensor
• Sets temperature above set point at which boiler will be switched o
3. Adjusts pump related parameters in DHW mode
• Pump overrun time after DHW demand
4. Dene demand by switch or sensor
• DHW starts when switch (thermostat) closes
• DHW starts based on dierence between actual and required DHW tem-
perature

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INSTALLER’S GUIDE
ADVANCED CH SETTINGS
ADVANCED DHW SETTINGS
SYSTEM SETTINGS
DIAGNOSTICS
USER SETTINGS
RESTORE FACTORY SETTINGS
1. Boiler parameters
2. User interface settings
3. Service settings
1. Boiler information
2. Lockout history
3. Manual test
Ignition power
Delay siphon check
Number of boiler pump
Pump speed max
Pump speed min
Anti legionella
Modbus parameters
Select language
Select units
Set date
Set time
Service information
Service due date
The System Settings menu allows to:
1. Dene several boiler parameters:
• Set power % used during ignition boiler
• Delay time to validate a siphon error
• Dene the number and type of pumps (pump and 3-way valve or 2 pumps)
• Dene the pump max and min speeds (%)
• Enable/disable anti legionella function
• Allows assignment of Modbus address. By pushing the OK button the ad-
dress is saved and the baud rate screen will appear. Once the baud rate is ad-
justed and the OK button to conrm is pushed, the modbus frame screen will
appear in which it is possible to select modbus frame characteristics. Once
conrmed by pushing the OK button the boiler parameter screen will appear
2. Dene user interface parameters:
• Current language is highlighted. Two languages are available : EN and DE
• Current temperature unit is highlighted. Two units are available : °C and °F
• Set system date
• Set system time
3. Dene service settings:
• Service company phone number can be inserted.
• Next service due date
The Diagnostics menu allows to display the following information:
1. Boiler information: CH request, DHW demand, Firing rate (in %), ame ionization current (µA), boiler set point, boiler sup-
ply temperature, return temperature, ue temperature, outdoor temperature, DHW storage temperature, boiler fan speed
(rpm*50), CH ignition (number stored every 20 counts), CH runtime in hours (stored every hour), DHW ignitions (number stored
every 20 counts), CH runtime in hours (stored every hour), DHW ignitions (number stored every 20 counts), DHW runtime in
hours (stored every hour), system water pressure in bar/psi for *
2. Lockout history: a list of recent errors. Pushing the OK button on the highlighted error will open a new screen that contains
details of the boiler status when the error occurred. Maximum length of list 8 errors
3. Manual test: a CH demand can be forced that will ignite the boiler (in absence of error) at the indicated power. Manual test
mode is enabled/disabled by pushing the OK button or is ended after technician code time-out (default 15 minutes). Leaving
the manual test screen while test is in progress allows technician to navigate through other menus to check boiler status and
functionality.

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INSTALLER’S GUIDE
ADVANCED CH SETTINGS
ADVANCED DHW SETTINGS
SYSTEM SETTINGS
DIAGNOSTICS
USER SETTINGS
RESTORE FACTORY SETTINGS
1. Heating
2. Domestic Hot Water
3. Holiday
The User Settings menu allows to access the user settings from the Installer menu:
1. Heating settings
• Set the CH set point and OTC curve parameters :
• Set the temperature that will be subtracted from actual set point if ECO mode is active,
through the Eco set point reduction.
• Display the scheduler menu
2. Domestic Hot Water settings
• In case there is a sensor, set the actual DHW temperature and in case there is a switch in the
DHW circuit, set the base boiler ow temperature.
• Set the temperature that will be subtracted from actual set point if ECO mode is active,
through the Eco set point reduction.
• Display the scheduler menu
3. Holiday settings
Refer to“User’s menu and parameter descriptions”on page 9
The Restore factory settings menu allows restore all the advanced settings to the original default factory settings by pressing on OK.
Please contact your ACV representative to get the default values for your appliance.
CH temperature/OTC set
Eco set point reduction
Scheduler set

10
11
22
1 2
4
5
3
9
8
18
19
17
20
21
6
7
1223
13
16
15
14
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APPLIANCE DESCRIPTION
MODELS - COMPACT CONDENS 170- 210 - 250 - 300
The Compact Condens is a oor-installed gas condensing boiler meeting the requirements of current“HR-
Top”standards in Belgium. The boiler is certied compliant with“EC” standards as a connected appliance:
C33(x) - C53(x) - C63(x) , but it can also be connected as an open appliance in category B23, which can
operate with a positive pressure.
The boiler is a room sealed boiler, equipped with a cast aluminium heat-exchanger.
As standard the boiler is programmed to operate with an on-o room thermostat. It can also be operated
using either an optional 0-10V signal, or an Outside temperature control system. The boiler also features
an optional function for digital communication with room thermostats.
An external DHW tank with a thermostat or sensor can be installed in the system. It will be controlled by
the built-in MAXSys controller.
Among the operating modes, the boiler can operate either in holiday mode or in eco mode, taking into
account the user’s schedules.
The boiler also features a built-in frost protection mechanism, as well as an anti-freeze function that will
protect both the appliance and the system. For more information and details on the boiler’s capabilities,
refer to”Principles of Operation”on page 10.
Key
1. Chimney connection 200
2. Auto air vent
3. Fan
4. Heating return and return NTC
5. Fill and drain valve (+ water pressure sensor)
6. Air inlet ( 110)
7. Venturi
8. MAXSys Controller
9. Gas valve
10. Control panel with display and pressure gauge
11. Heating supply
12. Flow NTC
13. Ignition and ionization electrodes (2x)
14. C1 & C2 terminal strips for electrical connections
15. Air pressure switch (backside)
16. Inspection sump cover
17. Cast aluminium heat exchanger
18. Condensate trap (syphon)
19. Syphon pressure switch + ue gas NTC
20. Inspection cover
21. Gas pipe
22. Overheat limiter switch
23. Flame sight glass

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TECHNICAL CHARACTERISTICS
COMPACT CONDENS
170 210 250 300
[M] “2222
[M] “1111
Min. of ue pipe mm 200 200 200 200
Drained weight Kg 209 217 233 259
Clearance required (on access side(s)) mm 1000 1000 1000 1000
DIMENSIONS

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TECHNICAL CHARACTERISTICS
COMBUSTION CHARACTERISTICS
COMPACT CONDENS
170 210 250 300
Input (PCI) max kW 168 210 252 290
min kW 33.6 42 50.4 58.8
Output at 100% (80/60°C) kW 163.6 204.5 245.4 282.5
Eciency at 100% (80/60°C) %97.4 97. 4 97.4 97.4
(50/30°C) %102.8 102.8 102.8 102.8
Eciency at 30% load (EN677) %107.5 107. 5 107. 5 107. 5
NOx (Class 5) Weighted mg/kWh 50 50 50 50
CO Max. output mg/kWh 40.8 41.8 39.7 37.5
CO2Max. output %CO29.3 9.3 9.3 9.3
Min. output %CO29.1 9.1 9.1 9.1
Max gas ow rate
G20/G25
G20 (20 mbar) m³/h 17.4 21.8 26.2 30.2
G25 (25 mbar) m³/h 20.2 25.2 30.3 34.9
Temp. of ue gases
Nominal °C 70 70 70 70
Max. °C 70-75 70-75 70-75 70-75
Min. °C 65-70 65-70 65-70 65-70
Mass ow rate** of ue gases Nominal g/s 80 108 120 138
at min output g/s 15 19 23 27
GAS CATEGORIES
** Mass flow rate values were calculated for G20 with an air factor of 1.3.
Gas type G20 G25 G20 G25
Pressure (mbar) 20 25 20 25
Country code Category
AT I2H
BE I2E(R)
BG I2H
CH I2H
CY I2H
CZ I2H
DE I2E
DK I2H
EE I2H
ES I2H
FI I2H
FR I2Esi
GB I2H
GR I2H
HR I2H
IE I2H
IT I2H
LI I2H
LT I2H
LU I2E
LV I2H
NL I2L
I2K
NO I2H
PL I2H
PT I2H
RO I2E
I2H
SE I2H
SI I2H
SK I2H
SL I2H

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TECHNICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS COMPACT CONDENS 170 - 210 - 250 - 300
COMPACT CONDENS
Main Characteristics 170 210 250 300
Rated voltage V~ 230 230 230 230
Rated frequency Hz 50 50 50 50
Electrical consumption W1150 1150 1150 1150
Electrical consumption in
standby W5555
Class IP 00b 00b 00b 00b
Fuse A5555
Min cross section of supply wire : 3 x 1.0 mm2
Ref Description To be connected to
BC Burner Control
DDisplay
C1 Connector 230V
C2 Connector low voltage
CH-P Central Heating pump Strip C1, pins 4 + 5 + 6
DHW-P Domestic Hot Water pump Strip C1, pins 7 + 8 + 11
PWM-P Modulating pump
HE Heat exchanger
MT Overheat limit switch
NTC1 Flow temperature sensor
NTC2 Return temperature sensor
NTC3 Domestic Hot Water sensor or switch Strip C2, pins 7 and 8
NTC4 Outside temperature sensor or switch Strip C2, pins 5 and 6
NTC5 Flue gas temperature sensor
WPS Water pressure switch
APS Air pressure switch
SPS Siphon pressure switch
GPS Gas pressure switch
GV Gas valve
SOn/O switch
3WV 3-way valve
OT-RT Open Therm or room thermostat On/O Strip C2, pins 1 + 2 (for automatic recogni-
tion)
FFuse
SPS-B Siphon pressure switch block
B-L Burner lock
P-O Pump On
B-O Burner On
B-B Burner block
PE Earth cable or connector
Fr Frame
WIRING DIAGRAM AND ELECTRICAL CONNECTIONS
NTC RESISTANCE
Internal NTC (Flow/Return/Flue) : 12 K [Ω] at 25°C
Outdoor sensors : 10 K [Ω] at 25°C

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TECHNICAL CHARACTERISTICS
5
26
3
4
1
Fr-FP
Fr-CP
Fr-MP
4
3
2
1
20
19
-
18
-
17
4
3
2
1
FP Front plate
CP Cover plate
MP Mounting plate
Fr Frame
PE Earth cable or connector
B-B Burner block
B-O Burner on
P-O Pump on
B-L Burner lock
SPS-B Siphon pressure switch block
F Fuse
OTC Outdoor temperature control 10K
OT-RT Open therm or room thermostat on / o
3WV 3 way valve
S Switch on/o
GV Gas valve
GPS Gas pressure switch
SPS Siphon pressure switch
APS Air pressure switch
WPS Waterpressure sensor
NTC5 Flue gas temperature sensor
NTC4 Outside temperature sensor or switch
NTC3 Domestic hot water sensor or switch
NTC2 Return temperature sensor
NTC1 Flow temperature sensor
HE Heat exchanger
PWM-P Modulating pump
DHW-P Domestic hot water pump
CH-P Central heating pump
C2 Connector low voltage
C1 Connector 230V
D Display
BC Burner control
Trafo
Ignition
12
6
7
18
29
310
411 5
22
21
20
19
18
17
16
15
14 PE
13 N
12 L
11 PE
10 N
9 L
8 N
7 L
6 PE
5 N
4 L
3 PE
2 N
1 L
14
7
13
64
18
4
7
3
6
2
5
1
12
5
11
4
10
3
9
2
8
16
3
5
210
5
9
4
8
3
7
2
6
1
D-X03
2 4 5
Service
2 5 3
PE
NTC3
NTC4
C2
N V1 V2 PE PE N L
BC
D-X05
1 2 3 7 8 9
1 5 4 3 2 6
C1
C1
D-X05
1 4
2 5
3 6
MT Fan
D
D-X01
X15
2 3 6 1 4 5
SPS
NTC2
NTC 5
1 6
2 7
3 8
4 9
5 10
D-X04
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
HEX
GPS
Tach PWM
-
+
GV
S
F
D-X01
9 8 7 3 2 1
11 4 14 7 10 3 13 6 12 5 8 2 1
1 5
6 2 3 4 5 1
9 4 5 10 8 3 6 7 2 1
X00
2 4
X01
X02
1 3
5 10
4 9
3 8
2 7
1 6
1 4
2 5
3 6
NTC1
WPS
APS Fan
X11
X14
X13 X15
DHW
or
OTC
or
or 3WV
PWM-P
+ 6Vdc
pwm
+ 24Vdc
-ground
B-L
SPS-B
0-10Vdc
OT-RT
B-B
B-O
P-O
DHW-P
CH-P
CH-P
230V
6
5
2
1
10
5
9
4
8
3
7
2
4
3
1
2
F00
F01
X02
X01
X00
X03
X05
X04
X01
X13 X12 X15 X14 X11
green-yellow
green-yellow
brown
black
red
green-yellow
green-yellow
blue
brown
- +
- +
green-yellow
brown
black green-yellow
green-yellow
green-yellow
green-yellow
black
blue
white
white
white
white
black
black
black
black
yellow
whitewhite
white
blue
black
blue
white
blue
black
brown
blue
black
black
black
black
blue
red
white
orange
grey
orange
purple
purple
white
green
grey
grey
grey
grey
grey grey
grey
grey
grey grey
grey
grey
grey
green-yellow
green-yellow
green-yellow
white
green
white
black black
white
grey
red
grey
blue
blue
grey
red
black
grey
white
brown
red
blue
yellow
white
white
blue
brown

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HYDRAULIC CHARACTERISTICS
COMPACT CONDENS
Main Characteristics 170 210 250 300
Capacity (primary) L16.9 21.3 24.7 30.2
Max. operating pressure of primary
circuit bar 6666
Water pressure drop (primary circuit)
(Δt = 20 K) mbar 90 96 99 103
Min. required ow rate L/h 7, 2 0 0 9,000 10,800 12,600
HYDRAULIC PRESSURE DROP CURVE OF THE BOILER
MAXIMUM OPERATING CONDITIONS
Maximum Service Pressure *
- Primary circuit : ............................................................................................................................................ 6 bar
Maximum Operating Conditions
- Maximum temperature (primary) : .................................................................................................. 80°C
Water Quality
See "Recommendations for the Prevention of Corrosion and Scaling in Heating Systems" on the following
page.
* The hydraulics of the boiler have been tested according to EN-15502, and the boiler is classied as a pressure class 3 appliance.
Compact Condens - Pressure drop vs Water ow
Pressure drop (mbar)
Water ow (m3/h)
PNEUMATIC CONNECTIONS
INSTALLATION MANUAL DEJATECH FLOORFLEX
printdatum 20-01-16 DEJATECH tel. + 31 77 475 2270 Revision 1 subject to changes without prior notice 38/50
6.7 Pneumatic connections
A pneumatic diagram for the Floorflex 168 (5 sections) and the Floorflex 294 kW (8
sections) is given in the figure below.
A pneumatic diagram for the Floorflex 210 (6 sections) and the Floorflex 252 kW (7
sections) is given in the figure below.
INSTALLATION MANUAL DEJATECH FLOORFLEX
printdatum 20-01-16 DEJATECH tel. + 31 77 475 2270 Revision 1 subject to changes without prior notice 38/50
6.7 Pneumatic connections
A pneumatic diagram for the Floorflex 168 (5 sections) and the Floorflex 294 kW (8
sections) is given in the figure below.
A pneumatic diagram for the Floorflex 210 (6 sections) and the Floorflex 252 kW (7
sections) is given in the figure below.
Compact Condens 170 (5 sections) and 300 (8 sections)
Compact Condens 210 (6 sections) and 250 (7 sections)
The siphon pressure switch, connected to the sump (P1), prevents overow of the syphon in case of too
high back pressure in the chimney.
The air pressure switch, (P1 and P2), connected to the venturi, checks the amount of air (by means of a Δp
measurement) before start.
Type NominalF low
7,2[ m
3
/h]
9[ m
3
/h]
10,8 [m
3
/h]
12,6 [m
3
/h]
0,0
10,0
20,0
30,0
40,0
50,0
60,0
70,0
80,0
90,0
100,0
110,0
120,0
0123456789 10 11 12 13 14 15
170
210
250
300