Nibe VEDEX 4000 Manual

21-01-2019
30-09-2019
27963
INSTALLATION AND MAINTANCE MANUAL
Wood gasifying boiler
VEDEX 4000

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities or lack of experience and knowledge about the appliance, unless they have been given supervision
or 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. We reserve the right to make design modi cati-
ons without prior notice.
©NIBE 2018

3VEDEX 4000
Content
1 General ________________________ 4
2 Installation______________________ 5
System diagram ________________________ 5
Area of use ____________________________ 5
Product description______________________ 5
Hot water heating _______________________ 5
Abbreviations __________________________ 5
Heating _______________________________ 5
3 Boiler controler - IGNEO TOUCH ___ 6
Description ____________________________ 6
Menu ________________________________ 7
Main Menu ____________________________ 9
Maintenance levels_____________________ 10
Boiler ________________________________11
Burner_______________________________ 12
Alarms ______________________________ 13
Alarm codes __________________________ 14
Start-up and ring______________________ 15
4 Settings and maintenance ____________16
Charge and circulation pump _____________ 16
Sweeping ____________________________ 16
Sweeping description ___________________ 16
General instructions ____________________ 17
Primary air control _____________________ 17
5 Wood ring _____________________18
Lighting instructions ____________________ 18
Adding wood__________________________ 18
Regulation ___________________________ 18
6 General information for the installer 19
Boiler room ___________________________ 19
Chimney _____________________________ 19
Carbon Monoxide Detectors______________ 19
Assembly ____________________________ 19
Distance to walls ______________________ 19
Turbulators ___________________________ 20
Installing ceramics _____________________ 20
Pre-installed ceramic kit _________________ 20
Ceramic grate_________________________ 20
Flame trough _________________________ 20
7 Pipe installation ________________ 21
Connection ___________________________ 21
Flue gas thermometer __________________ 21
Filling _______________________________ 21
Draining _____________________________ 21
Cooling coil___________________________ 21
Environmentally friendly ________________ 21
approved ____________________________ 21
8 Connection to bu󰀨er tanks _______ 22
Abbreviations _________________________ 22
Docking to two tanks with thermal charge
control and open expansion tank __________ 22
Docking to several tanks with thermal charge
control and open expansion tank __________ 22
Docking to two tanks with thermal charge
control and closed expansion vessel _______ 23
9 Electrical connection ____________ 24
Connecting (for IGNEO Compact) _________ 24
10 Service_______________________ 25
Fan _________________________________ 25
Cover plate ___________________________ 25
Troubleshooting _______________________ 26
11 Component locations ___________ 27
Component location, boiler section ________ 27
12 Dimensions ___________________ 28
Dimensions___________________________ 28
Enclosed kit __________________________ 29
Accessories __________________________ 29
13 Technical Data ________________ 30
Technical data/Technica specications______ 30
Other information ______________________ 30
Water-side resistance __________________ 30

4VEDEX 4000
1 General
Congratulations on choosing VEDEX 4000, a high quality wood boiler with a long service life, developed and
manufactured in Sweden.
In order to get the ultimate benet from VEDEX 4000 you should read through these Installation and Mainte-
nance Instructions. The numbers in brackets refer to the section “Component locations”.
The boiler is designed for houses with water borne heating and is environmentally approved for accumulator
tank ring.
The VEDEX 4000 must be installed by approved and competent personnel in accordance with the
manufacturers instructions and relevant regulations, standards and by-laws. Failure to follow these
instructions may result in loss of warranty.
IMPORTANT
In summer, the boiler must remain connected to the power supply - to reduce the risk of condensa-
tion in the panel. To stop the boiler operation, turn o the heating circuits on the regulator.
IMPORTANT

5VEDEX 4000
2 Installation
System diagram
EXP
AV
LV
SÄV
AV
AVT AV BV
SV4
CP2
SV1
SV2
T
TT
VVB
T
ELK
RC
AV
AVT AVT AVT
AV
AV
CP1 AV
Heating
Abbreviations
Hot water heating
Product description
Area of use
AV Shut-o󰀨 valve
AVT Draining valve
BV Non-return valve
CP1 Charge pump
CP2 Circulation pump
ELK Immersion heater
EXP Level vessel/expansion vessel
LV Venting valve
MV Motor valve
RC Control box
SV1 Shunt valve
SV2 Mixer valve
SV4 Thermal valve
SÄV Safety valve
TG Temperature sensor
VVB Hot water heater
The outline diagram shows components that are not
included in standard deliveries.
Hot water is taken from the top of the boiler and rout-
ed to the accumulators. Return water from the accu-
mulator tanks is led via a charger pack to the bottom
of the boiler. The hot water is led from the accumu-
lators to the radiator circuit via a shunt valve (SV1),
where the desired temperature to the radiators is
maintained by mixing the hot accumulator water with
the cooled return water from the radiator circuit with
recommended 65ºC temperature.
An accumulator tank with integrated water heater or
coil is needed for hot water heating or alternatively an
external water heater.
The hot water capacity is determined by the choice of
water heater size or the length of coil.
VEDEX 4000 is a boiler intended for heating houses
and other small buildings.
The boiler is environmentally approved for wood ring
to the accumulator tank.
VEDEX 4000 is a wood-red boiler with an induction
ue gas fan. Max. wood length is 0.5 m. The boiler is
designed to be connected to an external water heater
for heating domestic hot water.
When ring, the boiler water is partly heated by the
hearth and partly by the ue gas ducts.
Average output during wood burning operation is ap-
prox. 35kW (max. output is approx. 40kW).

6VEDEX 4000
3 Boiler controler - IGNEO TOUCH
12
67
A
B
C
Description:
3
4
5
1. Time / time setting – shows time according to
previous settings. Touching the time will cause
opening of the time setting menu.
2. Day of the week / date setting – shows current
day of the week according to previous date set-
tings. Touching will cause opening of the date
setting menu.
3. Current boiler operating mode and tempera-
ture set at the boiler – shows currently selected
operating mode. Touching will cause opening of
the mode setting menu:
• - Manual temperature regulation
4. Currently performed boiler activity and cur-
rent boiler temperature
5. Turning the boiler on / o󰀨. Touching will open
the menu for turning the boiler on/o󰀨, and oper-
ating mode for heating and domestic hot water.
6. Burner - shows current status for burner oper-
ation. Touching will cause opening of the boil-
er menu, which displays burner operation status
and provides for editing the settings.
7. MENU - touching will cause opening of the main
controller MENU.
DIODES:
A. Boiler diode. On then the boiler is on.
B. Burner diode. On then the burner is working.
C. Alarm diode Flashing when alarms are active On
when the alarms have not been acknowledged.
Status Description
TURNED OFF Burner does not operate. Opera-
tion is not allowed.
MODULATION Burner operates with power mod-
ulation (power range).
STOP Burner does not operate but its
operation is allowed. The re-
quired boiler temp has been
achieved.

7VEDEX 4000
Menu
MENU Boiler SETTINGS Set temperature [�C]
Histeresis on [�C]
Histeresis o󰀨 [�C]
* Min pump temperature
* Pump overrun time [min]
* Min return temperature [�C]
* Mixing valve time [s]
Burner SETTINGS Air corretion [%]
Blower power modulation [%]
Blower ring up power [%]
Blower in incandescing
Blower in hold/ pause
* Blower in burning o󰀨
* Incandescing time [min]
* Burning o󰀨 time [min]
* Lambda control
* Oxygen power 100%
* Exhaust fan
* Min. exhaust gas temperature [ºC]
* Nominal exhaust gas temperature [ºC]
* Max exhaust gas temperature [ºC]
* Burner inertia [min]
Alarm history
Software info
Menu level (PIN) Enter PIN
* Language Language select
*Sound alarm ON/OFF
The following description shows the available func-
tions from the MENU. Service functions are available
when Authorization Code is typed.
*- service function (PIN code required)

8VEDEX 4000
*- service function (PIN code required)
* Conguration * Autoconguration
* Main module IO
* Heating curcuits number
* Outside temperature sensor
* Hot water
* Solar heating
* Bu󰀨er
* Lambda module
* Return to boiler sensor
* Prole number
* Boiler pump
* Cascade Master
* EGT sensor type
* Energy measure
* Blower with HALL
* Out test * Hot water pump
* Boiler pump
* Solar pump
* Exchanger cleaner
* Blower
* ExhaustF
* CH1 pump
* CH2 pump
* CH3 pump
* CH4 pump
* CH1 mixing valve
* CH2 mixing valve
* CH3 mixing valve
* CH4 mixing valve
* Boiler ret. mixing valve
* Statistic * Fire up counter
* Average re up time [s]
* Average oxygen 30% power [%]
* Average oxygen 50% power [%]
* Average oxygen 70% power [%]
* Average oxygen 90% power [%]

9VEDEX 4000
Main Menu
Main Menu Boiler
Burner
Alarm history
Software info
Menu level (PIN)
Moving about the main menu occurs by moving the nger on the touchscreen. After selecting an item in the
menu and touching it, the submenu will open. Depeding on the selection, the user can change the settings, de-
ne a programme, or read the history of alarms and information about controller software.
Menu Description
Boiler
Presents current boiler temperature. After pressing the SETTINGS
button, we move to boiler settings. In order to change,boiler opera-
tion programme, return to the main menu and press the button for
changing the programme.
Burner
The Burner submenu presents current exhaust temperature in Cel-
sius [ºC]. After pressing the SETTINGS button, we move to burner
settings.
Alarm history
The Alarm History submenu presents the last 20 alarms detected
by the regulator. In order to turn o󰀨 the sound of the alarm, Conrm
the present alarm in the alarm history.
Menu level
This function is intended only for service technicians. In order to
increase the level of the menu, enter the correct PIN code and then
conrm with „OK”.

10 VEDEX 4000
Step Menu
1. At the home screen, press MENU to show main menu.
2. In the main menu go down and select MENU level
(PIN) function.
3. Enter the PIN code corresponding to the required
MENU level and approve by pressing “OK”.
Maintenance levels
Particular maintenance levels are password-protect-
ed. There are two maintenance levels, level 2 be-
ing the highest one. In order to enter the PIN code
to unlock hidden functions, in the main menu select
function MENU LEVEL (PIN), and enter the PIN code:
• Maintenance level 1 0 9 0 0
Maintenance level is required for detailed congura-
tion of the equipment, testing outputs, or changing
detailed settings for preheating function
Maintenance level remains active until reentering the
user code. After entering user code, menu returns to
the initial level. User level also returns automatically
after turning the boiler o󰀨 and on again.
Example of password entry in the maintenance ser-
vice menu:
Only authorized personnel may use the service
menu!
ATTENTION

11VEDEX 4000
Boiler
In order to check or change boiler operating parameters, open the BOILER menu..
Step Menu
1. On the main screen, choose MENU to show the main
menu.
2. Next, select the BOILER function.
3. In order to enter the SETTINGS menu, touch the set-
tings menu button in the bottom right corner of the BOIL-
ER screen.
4. While moving about in the SETTINGS menu, set the
following parameters:
• Set temperature [�C] - Boiler set temperature.
• Histeresis on [�C] - Temp. of the fan speed increase
when entering the boiler hysteresis.
• Histeresis o󰀨 [�C] - Temp. of the fan speed de-
crease when exiting the boiler hysteresis.
• * Min pump temperature [�C] - Boiler circulating
pump activating temperature.
• * Pump overrun time [min] - Time for which the
pump is running at the set temperature.
• * Min return temperature [�C] - Set minimal return
temperature.
• * Mixing valve time [s] - Mixer full opening time.
*- service function (PIN code required)

12 VEDEX 4000
Step Menu
1. At the home screen, press MENU to show main menu.
2. Next, select the BURNER function.
3. In order to enter the SETTINGS menu, press
the settings button in the bottom right corner
of the BURNER screen.
4. While moving about in the SETTINGS menu, set the
following parameters:
• Air correction [%]- Allows the adjustment of the
air volume supplied to the combustion process, as
programmed by the installer.
• Blower power modulation [%] - Blower power ex-
pressed in % after entering the modulation mode
• Blower ng up power [%] - Blower power ex-
pressed in % after entering the ignition mode.
• Blower in incandescing [%] - Blower power ex-
pressed in % after entering Incandescing mode.
• Blower in hold/pause [%] - Blower power ex-
pressed in % after exceeding the preset tempera-
ture or the maximum exhaust gas temperature.
• * Blower in burning o󰀨 [%] - Blower power expressed
in % after entering burning o󰀨 mode
• * Incandescing time [min] - time of incandescing process.
• * Burning o󰀨 time [min] - Burning o󰀨 time after reach-
ing the minimum exhaust temperature.
• * Lambda control - Turning on/o󰀨 Lambda sensor.
• * Oxygen power 100% - Oxygen content at maximum
power.
• * Min exhaust gas temperature [ºC] - Determinates
the minimum ue gas temperature for the boiler..
• * Nominal exhaust gas temperature [ºC] - Exhaust
gas temperature during modulation mode.
• * Max exhaust gas temperature [ºC] - Determinates
the maximum ue gas temperature for the boiler.
• *Burner inertia [min]
Burner
In order to check or change burner operating parameters, open the BURNER menu..
*- service function (PIN code required)

13VEDEX 4000
Alarms
Step Menu
1. At the home screen, press MENU to show main
menu, or directly touch the orange alarm icon at the
home screen of the control panel.
2. After opening the MENU, scroll functions downwards
to show ALARM HISTORY. Acknowledge by pressing
the function.
3. After opening the ALARM HISTORY menu, the list
of recent alarms will be displayed. If an alarm is active,
conrm it by pressing “CONFIRM” button. After acknowl-
edging, the alarm will remain active if still present. Ac-
knowledging the alarm silences the alarm sound at the
controller.
The controller features the alarm history saved in the
memory. If there are any active or not acknowledged
alarms, the alarm icon will be displayed at the home
screen, pressing of which will display alarm history.
History presents 20 last alarms.
In order to enter alarm history, proceed as follows:

14 VEDEX 4000
Main alarms
Code Brief description Possible cause
1 Short of the boiler sensor Sensor failure. Sensor cable broken.
2 Boiler overheating Boiler temp has exceeded the max value.
3 Return to boiler sensor damage Sensor failure. Sensor cable broken.
4 Burner/feeder sensor damage Sensor failure. Sensor cable broken.
5 STB -
20 Room sensor 1 damage Sensor failure. Sensor cable broken.
21 Room sensor 2 damage Sensor failure. Sensor cable broken.
22 Room sensor 3 damage Sensor failure. Sensor cable broken.
23 Room sensor 4 damage Sensor failure. Sensor cable broken.
24 CH1 temp. sensor damage Sensor failure. Sensor cable broken.
25 CH2 temp. sensor damage Sensor failure. Sensor cable broken.
26 CH3 temp. sensor damage Sensor failure. Sensor cable broken.
27 CH4 temp. sensor damage Sensor failure. Sensor cable broken.
30 Hot water sensor damage Sensor failure. Sensor cable broken.
31 Bu󰀨er top sensor damage Sensor failure. Sensor cable broken.
32 Bu󰀨er bottom sensor damage Sensor failure. Sensor cable broken.
40 Solar sensor damage Sensor failure. Sensor cable broken.
41 Solar tank sensor damage Sensor failure. Sensor cable broken.
42 Return to solar sensor damage Sensor failure. Sensor cable broken.
43 Solar T4 sensor damage Sensor failure. Sensor cable broken.
44 Solar T3 sensor damage Sensor failure. Sensor cable broken.
45 Solar T2 sensor damage Sensor failure. Sensor cable broken.
46 Solar T1 sensor damage Sensor failure. Sensor cable broken.
50 Fuel reserve Fuel level reached reserve.
51 Fuel tank empty Fuel have runned out.
100 Communication with the module 0 Problem with CAN bus or power supply.
101 Communication with the module 1 Problem with CAN bus or power supply.
102 Communication with the module 2 Problem with CAN bus or power supply.
103 Communication with the module 3 Problem with CAN bus or power supply.
104 Communication with the module 4 Problem with CAN bus or power supply.
105 Communication with the module 5 Problem with CAN bus or power supply.
106 Communication with the module 6 Problem with CAN bus or power supply.
107 Communication with the module 7 Problem with CAN bus or power supply.
110 Communication with the module
BIG
Problem with BIG bus or power supply. Cable CAN not connected
Alarm codes

15VEDEX 4000
Start-up and ring
1. To start the boiler, press the power button.
2. The boiler controller turns ON automatically when
the power is turned ON.
3. In order to start the boiler, touch the symbol on
the touchscreen and then move the slider respon-
sible for turning the boiler ON/OFF.
4. Place the fuel in the loading chamber, in accord-
ance with the recommendations in section 1 of
the Firing Instructions (see Chapter 6 Burning
Wood)
5. To start the ring process, enter the BURNER sub-
menu. After selecting the symbol, FIRING UP
status is displayed on the control panel display.
6. Set re to the newspapers stacked on the wood
according to section 2 of the Lighting Instruc-
tions (see Chapter 6 Wood ring)
7. After completion of the FIRING UP procedure,
the boiler switches to the GLOWING and then
MODULATION statuses

16 VEDEX 4000
4 Settings and maintenance
Maintenance
The Swedish Rescue Services Act species how of-
ten a boiler is to be swept and at what intervals with
regard to the risk of soot res. Sweeping carried out
by a chimney sweep includes all ue gas routes from
the hearth to the top of the chimney.
You can check the boiler’s re-a󰀨ected surfaces and
ue gas ducts yourself to determine how often the
boiler should be swept.
Gas, which contains tar substances, builds up in the
wood magazine. These substances condense on the
walls of the wood magazine and are later burned o󰀨.
This means that the walls of the wood magazine do
not usually have to be cleaned.
For optimum combustion and e󰀩ciency the boiler’s
secondary combustion chamber should be cleaned
after about 15 smoking (burning) cycles.
Tips and remarks
In order to ensure the safety of boiler maintenance
and cleaning activities, please observe the rules and
notes below:
• Maintenance and cleaning activities have to be
completed prior to commencement of boiler op-
eration, or when the combustion chamber is com-
pletely cool.
• During maintenance and cleaning always use
protective gloves, in order to avoid burning of
skin.
• When cleaning the boiler never use abrasive or
caustic cleaning agents.
• Clean the boiler regularly in order to maintain
its e󰀩ciency, safe operation and environmental-
ly-friendly combustion process.
• Clean ceramic inserts using brush only in order to
avoid damage to ceramics.
Cleaning the loading chamber
Cleaning the loading chamber::
1. Wait until the boiler cools down.
2. Open the loading chamber door.
3. Remove the smoke blocking plate as per the se-
quence in gure below (numbers 1, 2, 3).
4. Dismantle 6 lateral walls in the loading chamber,
as per the sequence in gure below (numbers 4,5).
5. Check the cleanness of the loading chamber and
clean, if necessary, using a scraper and a brush.
6. Swipe the removed residue out through the open-
ing in the ceramic plate.
7. Install lateral walls in the loading chamber.
8. The loading chamber was cleaned properly and
is ready for operation.
Boiler cleaning interval depends to a large
extent on quality of fuel. Maximum permitted
moisture content in fuel is 20%. Exceeding the
permitted moisture content shall have an ad-
verse impact on combustion parameters and
boiler lifecycle.
ATTENTION
Maintenance and cleaning activities have to
be completed prior to commencement of boiler
operation, or when the combustion chamber is
completely cool!
ATTENTION

17VEDEX 4000
Charge and circulation pump
If a charge or circulation pump is not in operation for
an extended period of time, it should be started from
time to time so that it does not jam.
Ash can still contain glowing embers after
a long period of time. Therefore, always use
a non-inammable container when emptying
ash and soot.
NOTE
Cleaning the combustion chamber.
The bottom section of the cleaning chamber is
cleaned via the door in the boiler’s bottom section. In
order to clean the combustion chamber properly:
1. Open the combustion chamber door.
2. Remove the vermiculite plate (see picture bellow).
3. Remove turbulators below ash tray.
4. Remove the tray.
5. Empty the tray, remove ash and ash residue. Clean
thoroughly.
6. Clean the chamber.
7. Replace the ash drawer and close the door.
8. The combustion chamber was cleaned properly
and is ready for operation.
Cleaning the convection section
The convection section needs to be cleaned a few
times in between chimney-sweep visits. In order to
clean convection channels properly:
• Remove convection channel cover from the boil-
er top section.
• Remove turbulators from the convection section.
• Clean the convection section using round brush,
attached with the kit.
• Mount turbulators, as per the sequence shown on
page 20.
• Mount the cover of boiler’s convection channels
LEK
1
2

18 VEDEX 4000
Primary air control Lower turbulators air control
General instructions
Secondary and primary air valves located on both
sides of the boiler are used for the distribution of air
within the combustion chamber.
The way the wood is chopped, its type and the mois-
ture content are all determining factors that a󰀨ect the
function and e󰀩ciency of the boiler.
Adjust the size of the wood to t the hearth. Suitable
length of chopped wood for VEDEX 4000 is 0.5m.
The wood is placed on the ceramic grate.
The combustion process works by reverse combustion
where the combustion gases are forced down through
the grate by an exhaust fan. The fan is controlled by
the ue gas temperature. A damper ensures that a self
induced draught does not occur when the fan is o󰀨 .
The fan is modulated according to the entered ex-
haust gas temperature and boiler water temperature
parameters. When the door are opened, the fan en-
ters 100% of the power.
Always use dry wood. Wood with a high moisture
content reduces the combustion temperature and
causes increased amounts of environmentally harm-
ful emissions as well as reducing e󰀩ciency. Extreme-
ly dry wood can cause too large a re which can cre-
ate large amounts of gas. In addition, there is a risk of
ashover, which in turn causes irregular combustion.
Carpentry o󰀨 cuts can be used but should be mixed
with other wood. All wood over 10 cm must be split.
Only use untreated and clean wood. Combustible
gases are created as the wood heats up. These burn
at temperatures between 300 - 900°C. The gases
make up75% of the wood’s energy content, the rest
is in the charcoal created, which also then burns.
Final combustion occurs in the compartment under
the grate after the supply of secondary air.
Primary air
valves
Secondary
air valves
• Primary air valves provide air to the upper section
of the combustion chamber.
• Secondary air valves provide air to the bottom section
of the combustion chamber, which is fed to the grate.
During the ring up process, open the primary air
valves to properly supply the required amount of oxy-
gen/air needed for the combustion process. The sec-
ondary air valves should be closed during the ring up.
During the combustion process we recommend, to
open the secondary air valves about 90% to properly
supply the right amount of oxygen/air needed for the
combustion process. The primary air valves should
be opened only for 2-3 mm .
Valves completely closed:
Valves completely open:
Move the
handle to
open
In the set with the boiler there are additional 4 turbula-
tors. These turbulators should be installed in the fur-
nace chamber under the ash tray (see gure below).
TOP VIEWFRONT VIEW
FRONT

19VEDEX 4000
The following points should be observed for VEDEX
4000 to perform optimally:
• Follow the lighting procedure by checking the ue
gas temperature.
• The fan should never stop during the ring cycle.
• When the accumulator is fully charged, there
should no longer be any wood in the wood mag-
azine.
• Never open the combustion chamber door during
operation.
• The combustion of wood can vary depending on
its moisture content and type as well as on the
position of the primary air damper.
The ame can be checked through the sight glass
after about 30 minutes operation. The colour of the
ame should then be yellow with a light blue tint in
lower doors.
It is important that initial ring is carried out carefully
in a new boiler so that any remaining crystallisation
water in the ceramics is condensed slowly to prevent
cracking.
Regulation
Adding wood
Lighting instructions
Add wood via the ller door. When this door is opened, a
microswitch is a󰀨ected, which, in turn increases the speed
of the fan. To prevent self-ignition of gases and ame re-
traction when opening the door, you should slowly open the
door at 1-2 cm, wait a moment for the air to ow into the
boiler through the door and then open it wider.
It is important that the amount of fuel is adjusted according
to the temperature levels in the accumulator system so that
it does not become overcharged.
Even out the embers before adding more wood. Then close
the ller door. The speed of the fan now slows and normal
operation is resumed.
VEDEX 4000 is designed for 0.5 m long pieces of wood.
Stack the wood well when adding. Place the logs so that
they do not block the grate hole, see an example of posi-
tioning in the images below. If shorter pieces of wood are
used, stack these over the grate hole towards the rear wall.
5 Wood ring
Loading chamber
sight glass
Combustion cham-
ber sight glass
It is forbidden to directly touch the sight
glasses and the boiler door during operation,
as the high temperature of these components
can cause burns.
NOTE
1. Put approx. 4kg of nely chopped wood, and lay
it in layers set crosswise, in order to create gaps
between the various layers of wood. Open the
primary air valves, and close the secondary air
valves.
2. Put a larger piece of newspaper on top and then
set it on re with the top door ajar.
3. Wait until the wood begins to burn properly (ue
gas temperature should be around 170-200 °C.)
4. Leave the top door of the furnace open until the
initial portion of wood ignites.
5. You can add more wood after igniting the starting
portion. After adding more wood, leave the prima-
ry air valves slightly ajar and open the secondary
air valves and then close the top door of the up-
per combustion chamber. The ue gas tempera-
ture should decrease.
6. Check whether the ue gas temperature is rising
a few minutes after adding wood. If the tempera-
ture starts to increase, the boiler is in normal op-
erating mode (i.e. ue gas temperature is approx.
150-180 °C).
7. You can add another portion of wood when the
glow remains in the furnace.
During the wood catching re you should stay
near the boiler, after closing the door and mak-
ing sure that the boiler is working properly, you
can leave the boiler room.
NOTE

20 VEDEX 4000
6 General information for the installer
Boiler room
Distance to walls
Assembly
Carbon Monoxide Detectors
Chimney
VEDEX 4000 has inlets for primary and secondary air on
the sides of the boiler. Therefore, always leave a space of
at least a metre from combustible material. In unfavoura-
ble cases “pu󰀨s” from combustion can discharge sparks.
It is mandatory to t a Carbon Monoxide alarm within
the room whenever a new or replacement solid fuel
appliance is installed in a dwelling. This alarm must
be a permanently installed type, rather than a porta-
ble type, and should incorporate self-test and audible
alert if the battery or detector cell develop a fault.
Setting of the alarm must meet the following criteria:
• on the ceiling at least 300mm from any wall or,
if it is located on a wall, as high up as possible
(above any doors and windows) but not within
160mm of the ceiling;
• between 1m and 3m horizontally from the appliance.
Many older boilers have the ue duct located at the
bottom and have been connected to the chimney
near to the oor. If the new boiler is to be connected
higher up on the chimney the lower, non-active, part
of the chimney pipe should be lled with sand or sim-
ilar material.
Material Area Min. height
Steel pipe Ø160 mm 5.0 m
Brick 160 x 160 mm 5.0 m
The boiler room must be built in accordance with ap-
plicable building regulations.
Provision for good air supply. The boiler room’s air
intake must be as large as the ue.
Set the boiler while maintaining the minimum distances
to the walls. When installing the unit, pay special atten-
tion to a convenient access to the boiler and chimney
during maintenance, cleaning and servicing.
1 - foundations
Ensure that sweeping can be carried out in
accordance with the applicable regulations.
If in doubt, contact a chimney sweep.
NOTE
VEDEX 4000 has a vertical ue pipe connection with
an external diameter of 133mm. A vertical ue pipe is
supplied as standard.
The ue diameter should be 160mm in accordance
with the Building Regulations.
The ue should be dimensioned in accordance with
the Building Regulations and EN 13384-1 to facilitate
correct functioning of the combustion system.
The minimum chimney draught for satisfactory wood
ring is 15 Pa. The ue needs to be inspected and
approved before installation.
Dimension Distance [mm]
A 1000
B 600
C 600
D 600
E 1000
F 150
1
B
D
A
E
F
C