Varmebaronen Vedolux 37 Installation and operating instructions

Installation, operation and maintenance
Firewood boiler
Vedolux 37
170823 V37 US rev4

Värmebaronen Vedolux 37
2
Contents
Function....................................................................................... 4
Technical data.............................................................................5
Installation...................................................................................6
General
Chimney
Flue pipe
Flue gas thermometer
Connection to accumulator system
Function of accumulator control
Shunt valve
Expansion system
Cooling coil – temperature limiter
Radiator pump
Filling the heating system
Turbulators
Bracket for cleaning tool
Draught hatch
Pellet burner
Oil burner
Electrical connection..................................................................8
General
Electrical connection
Wiring diagram and control panel.............................................8
Function
Checks......................................................................................... 9
General
Checks
Firewood......................................................................................9
Firewood as a fuel
Firewood
Heat content
First burning cycle
Firewood as a fuel ....................................................................10
Startup
First burning cycle
Lighting – start
Lighting a fire with the gas lighter
Adding wood
Bypass damper
Controlling combustion
Inner ash hatch
Flue cleaning.............................................................................11
General
Cleaning the boiler
Chimney sweeping
Cleaning the fan
Operation and maintenance.....................................................12
Ceramic – combustion tunnel
Safety valves
Venting
Water pressure in the system
Unvented expansion system
Overheating protection
If there is a risk of freezing
Draining the boiler
Boiler cleaning
Pellet- oil burner
Problems burning firewood .....................................................13
Component specification .........................................................14
Read this document carefully before carrying out any
installation,
adjustment or service – and follow the instructions.
Keep these instructions close to the boiler!
The boiler must not be modified, changed or rebuilt.
To guarantee high reliability, all installation, adjustment and
ongoing service must be carried out correctly.
The correct settings are important for economical heating.
The type and serial number of the boiler must be quoted
whenever you contact your retailer, see the rating plate.
For service issues, contact your installer.
Värmebaronen AB retains the right to change the
specification without prior notice, as part of its policy of
continuous improvement and development.
Illustrations may differ from the actual product
Allowing for printing errors and errors on proofs.
This manual describes the installation and operation of the Ved-
olux 37. This heater meets the 2020 U.S. Environmental Protec-
tion Agency’s cord wood emission limits for wood heaters sold
after May 15, 2020. Under specific test conditions, the heater
has been shown to deliver heat rates as specified in the techni-
cal data in this manual.
You may see the following symbols in these instructions
and on the product:
Information that is important for optimum func-
tion.
Tells you what you must – or must not – do in order
to avoid personal injury.
Tells you what you must – or must not – do in order
to prevent damage or disturbance to the component,
the burner, the process or the surroundings.
General

3
Värmebaronen Vedolux 37
To be completed when the Vedolux 37 is installed!
Serial number: .........................................................................................................................................
Installation date: .........................................................................................................................................
Installer: .........................................................................................................................................
Tel: .........................................................................................................................................
Other: .........................................................................................................................................
.........................................................................................................................................
.........................................................................................................................................
.........................................................................................................................................
.........................................................................................................................................
.........................................................................................................................................
Notes

Värmebaronen Vedolux 37
4
Function
Vedolux 37
• is a firewood boiler with a suction fan, designed for heating houses
and smaller properties.
• is environmentally-approved for firewood burning with an accumu-
lator tank.
• is designed for 20 in. firewood.
• is designed to be connected to an external water heater.
• is primarily designed to be fired by firewood, but can also easily be
modified for use with an oil or pellet burner.
• has an output of 126 kbtu when burning firewood and 143 kbtu
when burning oil/pellets.
Ceramic combustion chamber
The combustion chamber is designed for reverse combustion. The
depth of the combustion chamber is 21.7 in. A bypass damper pre-
vents smoke entering the room when firewood is added.
Flue cleaning
All flue ducts in the boiler are cleaned from the same hatch at the
front of the boiler. The hatch is hinged and is opened with a single op-
eration. The flue ducts are round, which means there are no awkward
corners when flue cleaning.
Chimney
The Vedolux 37 has a suction fan minimising the chimney require-
ments of the boiler.
Accumulator tank
To optimise combustion and efficiency, and to meet environmental re-
quirements relating to firewood burning, the boiler must be connected
to an accumulator tank. The accumulator tank is dimensioned accord-
ing to the requirements of the building.
Delivery
The product is delivered with the following components:
• flue pipe.
• flue cleaning tool with bracket.
• flue gas thermometer.
• gas lighter.
• 1.5 bar pressure relief valve.
• NPT adapters: NPT G15 (½”) x 1 pcs.
NPT G25 (1”) x 2 pcs.
NPT G32 (1¼”) x 2 pcs.
Accessories
• Stand to make firewood burning more convenient.
• Accumulator Control 3.
• accessory for oil/pellet firing (cover plate with draught hatch for fan).
This wood heater has a manufacturer-set minimum low burn rate that
must not be altered. It is against federal regulations to alter this setting
or otherwise operate this wood heater in a manner inconsistent with
operating instructions in this manual.
Warranty; please contact your local dealer, you find the contact infor-
mation and warranty details in the warranty manual.
The boiler must be installed in a way to prevent problems caused by
smoke, the general recommendation is that the chimney shall be one
meter higher than the highest part of the roof. Avoid installation in
highly urbanized areas, or if the surrounding buildings are higher than
the chimney.
The efficiency test is performed with the boiler connected to a partial
storage, due to that the boiler can be operated at nominal output even
when the heat demand is low. The efficiency for the combustion will be
the same even if the heat demand is high or low.
The heat demand may affect the efficiency for the complete installa-
tion by the heat losses, the heat losses will be the same regardless the
heat demand; but will be a greater part compared with the used heat if
the heat demand is low.
The location of the boiler and storage tank will affect the heat losses
and thereby the efficiency, if the installation is located in a heated area
the heat losses will be smaller and if the heat losses can be used to
heat a living area the efficiency will increase. If the installation are
located in a cold building the heat losses will be both greater and there
will not be any use for the heat losses.
The efficiency can be calculated from higher (HHV) or lower heat value
(LHV). An efficiency calculated from LHV will give a higher result in
percent compared with a calculation from the HHV. The efficiency for
Vedolux is calculated from the HHV.
The highest efficiency for the boiler will be found when it is operated at
nominal output, all attempts to increase or reduce the output from the
boiler risk to affect the efficiency in a negative way. The output from
the system shall be controlled by the output from the accumulator.
During start up and end phase the content of CO in the flue gas can
be significant, but when the combustion temperature is high and the
combustion is normal there will only be a small content of CO in the
smoke, less CO if the fuel are well seasoned but it can be a quite high
content if the fuel are damp. CO is invisible, odorless gas. CO are toxic
and can be deadly. Pay attention to leakage from the boiler or flu gas
duct. Smoke monitors are recommended to detect leakage.
CO, average in dilution tunnel:
Boiler Cat I >15% load Cat IV 100% load Unit
Vedolux 37 0.11 0.10 g/min

5
Värmebaronen Vedolux 37
61 +0.8
-0
13.4
+0.8
-0
930
20.9
3.8
+0.8
-0
0.7
47.6
34.2
50.8
53.8
56.8
n6
46.7
51
AA
Technical data
2
3
12
13
14
1
13
18
19
18
2
1
14
14
Clearance to combustibles.
12” sides and rear, 18” top and 36” front.
1. Hot water outlet, riser, 1¼” BPT*.
2. Hot water outlet, return, 1¼” BPT*.
3. Flue pipe, standard.
12 Base bolts, adjustable.
13. Connections for cooling coil, 0.6 in Cu.
14. Expansion connection, 1” BPT*.
19. Base frame, accessory.
*Use the delivered NPT adapters for these connections.
The NPT adapter builds 2.2”.
n6
15.7 4.8
5.3
n5.9
4,1
6.3
Weight, empty 705 lb
filled with water 970 lb
Volume 32 gal
Pressure, design 22 psi
test 31 psi
Pressure drop, water flow 0.14 gal/s 0.145 psi
Temperature, design 220 °F
operating max 220 °F
Output wood, moisture content 16 ±4% 126 kBTU/h
Output, pellets 143 kBTU/h
Combustion chamber, volume 25.9 gal
depth 21.7 in
Wood, length 20 in
diameter 6 in
Burning cycle, combustion chamber full, moisture 16±4% 2.5-3 h
Firewood hatch, w x h 11.4 x 9.3 in
Chimney requirement, height 11.5 ft
flue duct recommended Ø 5.71 in
25.6 in2
flue duct min Ø 4 in
12,6 in2
draught 0.04 in H2O
Flue gas temperature 355 °F
Accumulator volume, min 400 gal
Voltage 115 V~, 60 Hz
Current 0.3 A
Protection class IP 21
Boiler group as per EN 303-5 3
UL391, CSA-B366.1, ETLM78-1
Certified by Guardien Fire Test Labs
Tested according to method 28 WHH PTS

Värmebaronen Vedolux 37
6
Installation
The installation must comply with the applicable
regulations and standards.
The boiler must be installed in-
doors in a cellar or on the ground
floor. The installation site must
be able to support the combined
weight of the boiler, the accumu-
lator tank and any chimney.
The boiler can support up to
330 lbs of the weight of the
chimney. Adjust the base bolts to
make the boiler level.
A temperature limiter must al-
ways be installed with the boiler.
The boiler must be connected to an accumulator tank, and the
installation must include an accumulator control.
You must contact the chimney sweep before changing to a dif-
ferent form of energy.
Contact the municipality to find out about restrictions on the
use of solid fuels in built-up areas.
The fresh air intake of the boiler room must have at least the
same cross sectional area as the chimney, and it must be de-
signed so it is impossible to close it by mistake.
The boiler must be installed in a way to prevent problems
caused by smoke, the general recommendation is that the
chimney shall be one meter higher than the highest part of the
roof. Avoid installation in highly urbanized areas, or if the sur-
rounding buildings are higher than the chimney.
Chimney
Vedolux 37 has a suction fan minimizing chimney requirements.
Clearance to combustibles.
12” sides and rear, 18” top and 36” front.
Flue pipe
The boiler is supplied with an
angled flue pipe – a flue pipe
running up from the steel
pipe is available as an ac-
cessory.
Fasten the flue pipe to
the flange on the boiler
using the 4
x M8 screws
supplied, with
washers. Remove
the cleaning hatch
first. Two sets of holes
are provided to cover the 360°
angle of rotation.
Flue gas thermometer
Install the supplied flue gas thermometer in the outlet of the flue
pipe, see the illustration above.
Connection to accumulator system
The boiler must always be connected to an accumulator tank with
an accumulator control.
The accumulator volume is dimensioned according to the surface
area to be heated. Allow for 2 – 3 gal of tank volume per 10 ft2of
heated surface area.
The schematic diagram below shows the Vedolux 37 with the
Aqualux CU and Aqualux UB accumulator tanks plus Accumulator
Control 3. For more details, refer to the documentation supplied
with the relevant product. Follow the installation instructions in the
documentation.
The pipe dimension between the boiler and the tank should be 1”
to 1¼” for copper pipe or equivalent.
This diagram illustrates the system principle – the actual system
will be designed according to the applicable standards and the
instructions supplied with each component.
VENTED
SYSTEM
UNVENTED
SYSTEM
Chimney
min
12 in.
Location of
boiler
min
36 in. min
12 in.
VEDOLUX 37
min 12 in.
13.5 in. min 11.5 f.
FLUE GAS
THERMOMETER

7
Värmebaronen Vedolux 37
Installation
Function of accumulator control
The accumulator control ensures that the boiler reaches a high
working temperature before it starts charging the accumulator
tank. It also prevents the return temperature to the boiler falling too
low, helping to minimise the risk of condensation in the combustion
chamber.
The charging pump of the accumulator system is controlled by a
flue gas thermostat.
Expansion system
The boiler is connected to a vented or unvented expansion system.
The volume of the expansion vessel is dimensioned according to
the circumstances. The guideline values for volume are approx.
5 % of the total system volume for vented systems, or 13- 15 % for
unvented systems.
Vented The distance between the top of the highest radiator and
the expansion vessel must be at least 8.2 ft in order to
prevent oxygen saturation of the water in the heating
system.
The expansion vessel is connected in a continuous and
unisolatable rise from the boiler’s expansion connection.
To prevent damage occurring if the expansion system
fails, for example because of freezing, the boiler should
be fitted with a type approved safety valve, 21.8 psi.
Unvented In unvented systems, the boiler must be fitted with a
type approved safety valve, 21.8 psi, connected using an
unisolatable pipe from the connection at the top of the
boiler, as well as a bleed valve.
The expansion vessel is best connected using ½” cop-
perpipe, as shown in the diagram on the previous page.
The opening pressure of the safety valve is based on
the lowest maximum pressure that any system
component can withstand.
Cooling coil - temperature limiter
The boiler system must be equipped with a temperature limiter in
accordance with the applicable regulations.
The boiler has a cooling coil which, combined with a suitable
thermal valve, is used to prevent the boiler temperature exceed-
ing 230°F if the water boils. Follow the instructions of the valve
manufacturer.
Turbulators
The five turbulators are installed in the flue gas pipes as shown in
the diagram. The purpose of the turbulators is to introduce turbu-
lence to the flue gases, causing more heat to be transferred to the
boiler water.
If the flue gas temperature falls too low (with a wide and long
chimney), there is a risk of condensation in the flue duct. To
increase the temperature, the three upper turbulators can be
removed, or cut to a length that produces a suitable flue gas tem-
perature The draught hatch is another way of reducing condensa-
tion problems.
Bracket for cleaning tool
The bracket for the cleaning tool can be fitted to either side of the
boiler or any suitable place close to the boiler.
Draught hatch
An extremely high chimney and/or strong winds can create a
draught that is strong enough to allow combustion with the fan
turned off. The solution is to install a draught hatch, which can
reduce the draught to 0.04 - 0.06 in. water.
Pellet burner/oil burner
The Vedolux 37 is primarily designed to be fired by firewood, but
can also be modified for pellets using a pellet burner.
When the pellet burner is used, the accessories supplied with the
pellet hatch set must be installed:
• Hatch, designed for the Viking Bio pellet burner.
• Cover plate with draught hatch, instead of the fan on the rear of
the boiler.
• Cover plates for the primary damper behind the plate on the front
of the boiler.
• Cover plate for the secondary damper.
It is possible to install an oil burner in the pellet hatch set. Fittings
x 3
x 2
30
31
30
31

Värmebaronen Vedolux 37
8
Electrical connection
Supply
Fan
Circulation pump
YELLOW/GREEN
YELLOW/GREEN
BLUE
BLACK
BLACK
BLUE
15
16
17
20 22 21
25 26
27 28
0
1
2
3
4
5
6
0
0
0
0
0
0
psi
0
1
2
3
4
bar
c
F
0
2 1
1
4
8
6
0 0
2
0
0
0
0
0
1 1
4
4
8
2
2
2
6
0
0
0
0
0 0
0
Electrical installation must be in accordance with
the applicable regulations, under the supervision of
an authorised installer.
Electrical connection
The boiler is connected directly to the mains.
The electrical connections are at the rear of the boiler, in the form of
three quick connectors:
15. Mains connection, 115 V~, cable with quick connectors supplied.
16. Fan.
17. Circulation pump, for charging the accumulator system.
Function
Start with the boiler cold.
Set the main switch, 20, to the ON-position – the green area must be
visible.
Set the thermostat, “FAN STOP”, 21, to 120° (250°F). The thermostat
detects the flue gas temperature.
Press “FAN START”, 22, the time relay, 24, is activated and the fan
starts.
When the time set for the time relay, 30 minutes, is reached, the
contact changes, which means that the fan and the charging pump
for the accumulator system are controlled by the thermostat, 21.
When the firewood is burnt out and the flue gas temperature falls
below the value set for the thermostat, 21, the fan and charging pump
stop running.
If the boiler temperature exceeds 220°F, the overheating protection is
triggered. The fan stops running and the charging pump continues to
operate. If the overheating protection, 25, is triggered, the “ALARM”
indicator, 26, is lit.
An thermostat limits the boiler’s working temperature.
15. Supply connection, 3-pole connector.
a. cable part, socket.
b. chassis part, plug.
16. Fan connection,
5-pole connector.
a. cable part, plug.
b. chassis part, socket.
17. Connection for charging pump, 3-pole
connector.
a. cable part, plug.
b. chassis part, socket.
18. Terminal block for internal earth connec-
tions.
20. Main switch.
21. Thermostat for fan and charging pump.
22. Fan start, cold boiler.
23. Limit thermostat.
24. Time relay, delayed cutoff.
25. Overheating protection.
26. Indicator showing triggered overheating
protection.
27. Thermometer, displays the boiler tem-
perature.
28. Pressure gauge showing the water
pressure in the heating system.
Wiring diagram and control panel
93°C
25
15a
16a
17a
18
20 21 22
23
24
26
15b
17b
16b
Always disconnect the power supply
to the boiler before accessing the
automation cabinet or units powered
by the boiler.

9
Värmebaronen Vedolux 37
Checks
After installation, check with the installer that the system is in
perfect condition.
Ask the installer to demonstrate the settings and functions so
you know how to operate and care for the system.
Checks
Before putting the system into operation, check that:
• the system is filled with water
• all connections are watertight
• flue gas connections to the boiler and to the chimney are tight
• the filling/drain valve has been closed properly.
• the safety valves are working correctly
• the necessary valves are open
• the circulation pump is working and the direction of flow is correct
• the correct temperature has been set on the charge thermostat
Firewood
Firewood as a fuel
Vedolux 37 has a ceramic grate and an afterburning chamber made
of high-temperature resistant stainless steel. The boiler works on the
principle of reverse combustion. If the boiler is correctly operated, it
burns firewood and gases very effectively, with high efficiency and
low environmental impact.
Using firewood as a fuel is not simply about burning the wood – the
techniques used have a decisive effect on the result.
Firewood
Hardwoods generally have a higher energy content than conifers.
However, the most important thing is that the wood must be dry –
moisture content 12-25 %.
If the wood is damp, much of the energy is wasted on drying it out,
combustion is impaired and the risk of tarring increases.
Oak should be well dried, for more than three years, and or mixed
with other wood types to avoid the negative factors of high acidity.
The blocks of wood must be the correct size for the combustion
chamber, around 20 in. long and around 6 in. wide, allowing three
blocks to fit the width of the grate.
To allow the wood to dry out, the tree should be felled at least one
season in advance. An alternative method is to fell the tree in spring
just after the leaves have come out, then wait a few weeks before
trimming and splitting the wood. During these weeks, the leaves wilt
and draw out the moisture. After another few weeks of drying, the
wood has 25-30 % moisture content.
After cutting, the wood must be split. The more it is split, the faster
and easier it will dry. If logs are difficult to split, the bark can be
stripped to speed up drying. Fresh wood is easiest to split.
The wood should not be in direct contact with the ground, as this
causes the wood to take on moisture instead of drying out. Ideally
the wood should be kept under a roof but in a place where the sun
and wind can help dry it. The best place for final drying is the boiler
room, for 2-3 weeks before the wood is used. The moisture content
after drying is around 20 %.
Heat content
The heat content is the amount of heat that can be extracted by the
boiler and transferred to the boiler water. Heat content should not be
confused with energy content, which increases with the size of the
block of wood. The heat content increases with the dryness of the
block of wood, because less heat is wasted on drying the wood.
Newly cut wood has a moisture content of around 55 %. Firewood
that has been dried out following our instructions has around 20 %
moisture.
8000
7000
6000
5000
4000
3000
010 20 30 40 50
Btu/lb
% moisture
content
The chart illustrates how the heat content changes.
If a building uses 880 ft3of newly cut firewood (55 % moisture),
around 495 ft3of water needs to be dried through the chimney. In
other words, the energy needed to vaporize 3700 gal is wasted.
Other problems using damp wood include poor combustion and dirty
emissions, which in turn impair efficiency.
First burning cycle
In the first burning cycle, or if the boiler has not been used for a
while, it is important to just light a small fire. The ceramic parts of
the boiler may contain moisture, which must be vaporized slowly so
as not to crack the ceramic. Once the ceramic parts are dry, you can
light a full-size fire. The ceramic does not take on moisture when the
boiler is being used. See “Operation and care”.
This heater is designed to burn natural wood only. Higher efficiencies
and lower emissions generally result when burning air dried sea-
soned hardwoods, as compared to softwoods or to green or freshly
cut hardwoods.
DO NOT BURN:
(1) Garbage;
(2) Lawn clippings or yard waste;
(3) Materials containing rubber, including tires;
(4) Materials containing plastic;
(5) Waste petroleum products, paints or paint thinners, or asphalt
products;
(6) Materials containing asbestos;
(7) Construction or demolition debris;
(8) Railroad ties or pressure-treated wood;
(9) Manure or animal remains;
(10) Salt water driftwood or other previously salt water saturated
materials;
(11) Unseasoned wood; or
(12) Paper products, cardboard, plywood, or particleboard. The pro-
hibition against burning these materials does not prohibit the use of
fire starters made from paper, cardboard, saw dust, wax and similar
substances for the purpose of starting a fire in an affected wood
heater. Burning these materials may result in release of toxic fumes
or render the heater ineffective and cause smoke.’’

Värmebaronen Vedolux 37
10
Startup
1. the bypass damper must be in the closed position.
2. place kindling in the boiler, with paper if you are using it.
3. the main switch must be set to on (the green area must be visible).
4. thermostat, FAN STOP, set to 120°C (250°F).
5. press “FAN START”, the fan starts.
6. light the boiler – gas is recommended.
First burning cycle
The first fire to be lit should be started carefully so that any remaining
moisture in the ceramic can vaporise slowly. Lighting a fierce fire may
crack the ceramic Only light a small fire the first time. Once the ceram-
ic parts are dry, you can light a full-size fire. The ceramic does not take
on moisture when the boiler is being used.
Lighting - start
• Place kindling in the boiler, followed by crumpled newspaper.
• Press “FAN START”, the fan starts. Light the paper. Leave the fire-
wood hatch slightly open.
• Wait a while before closing the firewood hatch. The wood must have
properly ignited (flue gas temperature approx. 250°F). Leave it to
burn until there is a layer of vigorous embers.
Lighting a fire with the gas lighter
• Arrange medium size blocks of wood over a layer of kindling, then fill
the rest of the combustion chamber with large blocks.
• Close the firewood hatch.
• Ignite the gas lighter and insert it into the nozzle in the hole at the
top of the inner ash hatch. Move the flame from side to side, and the
wood should have ignited after about a minute.
Adding wood
When the time comes to add more wood, open the bypass damper be-
fore the firewood hatch. This prevents smoke entering the room and
the risk of flames exiting the boiler when you add firewood.
Even out the layer of embers. Add more fire-
wood. The amount of firewood added de-
pends on the temperature in the accumulator
– do not allow the temperature to get too high.
Filling the boiler with firewood increases the
temperature of the boiler and a 400 gal. ac-
cumulator by about 110- 120°F. Stack the
wood carefully.
Close the firewood hatch followed by the by-
pass damper.
If the flue gas temperature increases, you
know that the firewood has ignited.
When the firewood has burnt and the flue
gas temperature has fallen to below 250°F,
the fan and charging pump to the accumula-
tor stop running.
20 22
21
25 26
27 28
8
Bypass damper
The boiler’s bypass damper must only be used for adding wood dur-
ing a burning cycle, in order to prevent smoke entering the room.
When the bypass damper is open, the boiler works like an updraught
burner with shorter flue gas paths. This increases the flue gas tem-
perature and reduces efficiency.
Do not forget to close the damper after adding firewood!
Controlling combustion
All air passes into the boiler through the
draught hatch in the ash hatch. Combus-
tion is controlled by the draught created
by the fan, and by the addition of oxy-
gen in primary, secondary and tertiary air
through the inner ash hatch. To optimise
combustion and efficiency, the flue gas
temperature should be 350- 400°F.
45. Hole for gas lighter.
46. Secondary damper, normally closed.
47. Tertiary damper.
The tertiary air, 47, can be adjusted so that the flame is light yellow.
The soot indicates the quality of combustion. If it is very dark or black,
the combustion process is not receiving enough air. In this case, the
damper should be opened more. Efficient combustion gives the soot a
grey-brown colour. If you are burning wood with a moisture content of
18%, the opening should be about 4 mm. The smoke from the chim-
ney shall (except for the start-up phase) be white or invisible during
the combustion, if the smoke is dark or yellow it is an indication that
the combustion is poor or that the fuel is improper for the boiler.
Inner ash hatch
The diagram below shows how to insert the inner ash hatch. Follow
the steps in reverse to remove it.
Firewood as a fuel
45
46
47
Push up Angle in Push down. The pin at
the bottom of the ash
hatch engages with the
hole in the ash plate.
0
1
2
3
4
5
6
0
0
0
0
0
0
psi
0
1
2
3
4
bar
c
F
0
21
1
4
8
6
0 0
2
0
0
0
0
0
11
44
8
2
2
2
6
0
0
0
0
0 0
0
20. Main switch.
21. Thermostat for fan and charging pump.
22. Fan start when the boiler is cold.
25. Overheating protection.
26. Indicator showing triggered overheating protection.
27. Thermometer, displays the boiler temperature.
28. Pressure gauge showing the water pressure in the
heating system.
RISK OF BURNS
Do not open the boiler hatches if the fan is not run-
ning and a fire is burning in the boiler. If you are not
sure whether a fire is burning in the boiler, first open
the bypass damper then open the firewood hatch a
couple of centimetres very carefully.
There is a risk of flames exiting through the hatch,
so take the greatest possible care!

11
Värmebaronen Vedolux 37
3. Flue pipe, standard.
4. Fan motor.
a. long nuts, x 3.
7. Cleaning hatch.
8. Control for bypass damper.
9. Firewood hatch.
10. Ash hatch.
19. Base frame with ash pan.
29. Tool for removing turbulators.
30. Short turbulators, x 3, in upper pipes.
31. Long turbulators, x 2, in lower pipes.
32. Plate in upper front edge of the combustion
chamber.
33. Inner ash hatch with secondary damper.
34. Ceramic grate, two parts, front and rear.
35. Combustion tunnel.
43. Protective grating for fan.
44. Collection chamber.
Cleaning the boiler
Rake out the ash from the combustion tunnel before each
burning cycle.
It is normal for tar to form on the walls of the combustion cham-
ber. The tar does not need to be removed because it will burn off
once the layer has reached a certain thickness. The tar does not
affect the efficiency of the boiler, and the output of the boiler is cal-
culated and dimensioned on the basis of the heat conversion surface
area in the flue ducts. The flue ducts must be kept clean
at all times. In a cleaned boiler, less of the heat escapes
with the flue gases. One way of telling whether it is time for
cleaning is to check the flue gas thermostat. It is a good idea
to clean the boiler if the flue gas temperature is approx. 80°F higher
than the temperature in a clean boiler.
• Open the cleaning hatch.
• Pull out the five turbulators, using the tool.
Clean the pipes with the pipe brush.
When cleaning the three upper pipes, be careful not to push the
pipe cleaner through the grating, damaging the fan. Do not push
the pipe cleaner further than the end of the pipe. You can feel
when you have reached the end from the difference in the amount
of force needed to push the cleaner.
Replace the turbulators.
• Open the firewood hatch and the bypass damper.
Remove the ash on the plate in the upper front edge of the com-
bustion chamber. There should always be a small quantity of ash
on the ceramic grate in order to extend the service life of the grate.
• Open the ash hatch and remove the inner ash hatch.
Rake out the ash from the combustion tunnel but leaving a protec-
tive layer of a couple of centimetres.
Clean the chamber around the combustion tunnel.
Close all hatches and dampers.
Chimney sweeping
After the chimney has been swept, unscrew the wingnuts on the
front of the flue pipe, 3 and 18, and remove the cover. Remove soot
and ash. Before restarting the boiler, remove any soot and ash that
has fallen onto the fan and into the collection chamber 44.
Cleaning the fan
If necessary the fan can be removed and cleaned, You should handle
the fan with care.
• Remove the fan connector, 16, from the boiler plug.
• Unscrew the long nuts, 4a, securing the fan.
• Clean the fan blades carefully so they keep their shape. You are
recommended to use a paintbrush.
• Replace the fan and connect the cables.
Cleaning
29
30
31
32
34
35
3
7
9
10
8
32
30
31
34
33
35
4a
4
43
16
34
35
35
44
19
7
9
10
When cleaning, do not leave any remains of wood or
embers on the grate.
Disconnect the power supply to the boiler before
cleaning.
Ashes may contain embers for a long time after the
burning cycle, so keep them in a non-flammable
container with a cover.

Värmebaronen Vedolux 37
12
Operation and care
RISK OF BURNS
Do not open the boiler hatches if the fan is not run-
ning and a fire is burning in the boiler. If you are not
sure whether a fire is burning in the boiler, first open
the bypass damper then open the firewood hatch a
couple of centimetres very carefully.
There is a risk of flames exiting through the hatch,
so take the greatest possible care!
Ceramic - combustion tunnel
The ceramic grate and combustion tunnel are wearing parts that
will have to be replaced over time. Wearing parts are not covered
by any guarantee. Small cracks in the ceramic are not abnormal
and no action is necessary.
To increase the service life of these parts, follow these instruc-
tions:
• Do not remove the ceramic when cleaning the boiler combustion
chamber.
• Scrape the ceramic gently and carefully when removing ash from
the boiler.
• Leave a couple of centimetres of ash as a protective layer on the
grate and the combustion tunnel.
Pieces of charcoal from the previous burning cycle can be left for
the next cycle.
• Only use “real” wood, avoiding plastic, treated timber, refuse,
etc.
• Place the wood in the boiler, do not throw it in.
• If the boiler/ceramic is new or if the boiler has not been used for
a while, light a small fire to heat the ceramic and remove any
moisture.
Safety valves
In order to preserve the safety function, the safety valves for the
domestic hot water system and the heating system must be oper-
ated regularly, around four times a year.
Open and close the safety valve manually around four times a year,
checking that a small amount of water escapes and that the valve
closes again properly.
Also check that there is sufficient pressure in the system. If neces-
sary, add more water.
Venting
Regularly check that there is sufficient water in the heating sys-
tem.
Air may remain in the system for a while after installation, so
bleeding should be repeated a few times. After bleeding, check the
pressure and add water if necessary.
Water pressure in the system
The pressure required in the heating system depends on the height
difference between the lowest and highest points in the system,
the static head. If the difference is 16.4 ft., the pressure is 7.3 psi,
if it is 32.8 ft., the pressure is 14.5 psi.
The necessary pressure in the heating system depends on the
height difference between the highest and lowest points in the
system, the static head.
The pressure in a heating system varies with the
temperature, so only add water if it is necessary.
The volume of water changes with the temperature, and the
change in volume affects the pressure in the system. The higher
the temperature the greater the volume and the higher the pres-
sure. The expansion vessel takes up the changes in volume. The
flow temperature – and therefore also the pressure – is higher in
the summer than the winter.
Unvented expansion system
The pressure in the unvented expansion vessel should be checked
at intervals of several years. The vessel must not be exposed to
any pressure from the heating system.
Overheating protection
The overheating protection, which stops the fan if the boiler
temperature is too high, is reset on the boiler control panel. It is not
possible to reset until the boiler temperature has dropped below
200°F.
If there is a risk of freezing
In severe cold weather, no part of the heating system should be
turned off as this would involve a risk of burst pipes.
Never start a burning cycle if you suspect that any part of the heat-
ing system might be frozen. Call the installer.
If the heating system will be turned off for an extended period, the
water should be drained.
Draining the boiler
The boiler must not be running while it is being drained.
Close the valves to the heating system.
Run the water to a floor drain via a hose connected to the boiler
drain valve.
Allow air into the system by opening the boiler safety valve.
The drain valve for the heating system must be located in a con-
venient place.
Boiler cleaning
Keep the boiler clean and tidy.
Alkaline cleaning agents are useful for removing soot marks from
the boiler. Do not use strong solvents.
Pellet burner
For optimum reliability and efficiency, it is essential to check and
adjust the burner regularly.
Power failure
If there is a power failure, the fan will stop and the output of the
boiler will fall. In around 20 minutes, the output drops from 100%
to approximately 10%. If Värmebaronen’s instructions were fol-
lowed when the accumulator tanks were connected, this output
can circulate naturally to the accumulator tanks.

13
Värmebaronen Vedolux 37
Problems burning firewood
Poor combustion. Damp wood. A ceramic boiler requires a high combustion temperature. To achieve
this, the wood must be dry, moisture content 12- 25%.
Incorrect handling. Read the instructions.
The wood is not suitable for the
boiler.
The firewood should be approx. 20 in. long, with a width allowing
three blocks to fit the width of the grate.
Constant “topping up” Constant “topping up” lowers the combustion temperature and re-
duces the boiler output.
Shaped wood, rectangular wood. If uniform blocks of wood are stacked on each other, a sold mass of
wood is created with limited surface area for the fire to act on. Arrange
the wood so there are gaps between the blocks.
Fails to burn. The wood is bent and/or not suitable for the boiler. This is not the
same thing as the firewood burning to a different extent in different
parts of the boiler, which is normal.
Not enough air. Check that the air valve is open. The fresh air intake of the boiler room
must have at least the same cross sectional area as the flue duct.
Damper too open. If the damper is too open, the air will not be correctly distributed in the
boiler. Start with the damper fully closed.
The chimney runs downwards
from the boiler connection.
The turbulence created takes away some of the draught. Fill the lower
part with sand or similar material.
No accumulator control. A ceramic boiler is at its most efficient when the ceramic is hot. The
temperature in the boiler therefore needs to be increased quickly
before charging begins. The service life of the boiler is shortened if
there is no control system. Add a control system.
Ceramic not correctly positioned. If the boiler is new, check that the ceramic has not moved during
transport. Also check the seal with the combustion chamber walls.
High flue gas temperature. Tar and soot in the pipes. Incorrect combustion. Check the firewood, the draught, the air intake
and the handling. Clean the boiler.
Bypass damper open. Close the damper. The bypass damper must only be opened for adding
wood.
Combustion tunnel in wrong
position.
The combustion tunnel must be inserted fully.
Faulty flue gas thermometer. The thermometer may have been damaged by cleaning or by long
periods of up draught burning.
Tar and soot in the pipes. Incorrect combustion. See the section about high flue gas temperature.
Heat is not transferred from the
boiler to the accumulator.
Wrong connections. Check.
Circulation pump in accumulation
control.
Check that the pump is operational. Most pumps have a speed control
– check that the speed is not too low.
Air. Vent. Check the installation. If installation is carried out according to
“Connection to accumulator system”, the system will not be sensitive
to air problems.
Wrong connection of accumulator. See the points above.
Boiling noises. Low pressure head. Check the pressure, which should be about 14.5 psi. The expansion
vessel must be dimensioned for the volume and for the temperature
variations that occur.
Fan fails to start. Main switch in position O. Set the main switches to position I.
Forgotten to connect the instant
connector.
Connect the instant connector.
Overheating protection triggered. Reset the overheating protection.
The safety valve opens when
the system is warm.
Expansion vessel too small. See the section about the “Expansion system” on page 5.
Initial pressure in the expansion
vessel too high/low.
Check the pressure in the vessel, see the section about the
“Expansion system”.

Värmebaronen Vedolux 37
14
item prod.no. name qty.
25 12 00 17 Overheating protection 1-pole, alt. 110°C 1
21 12 00 53 Thermostat 1-pole 100-500°C 1
23 12 00 06 Limit thermostat 1
12 00 09 Handle thermostat 1
22 13 00 31 Switch 2-pole, auto-return 1
20 13 00 32 Switch 2-pole 1
18 16 00 01 Terminal block 3-pole 1
16 00 06 End plate 1
24 17 00 22 Time relay 1
26 19 00 06 LED 230 V, red, pin 1
23 00 75 Damper arm 1
23 00 76 Damper arm lock 1
31 23 22 52 Turbulator 1000 mm 2
30 23 22 53 Turbulator 436 mm 3
24 00 10 NPT G15 (½”) 1
24 00 11 NPT G25 (1”) 2
24 00 12 NPT G32 (1¼”) 2
24 40 25 Bushing, brass, G25/20 1
24 55 05 Safety valve, 1,5 bar (21.76 psi) 1
11 24 03 50 Drain valve. R15ext 1
5 29 50 05 Cleaning tool bracket 1
30 00 09 Glass fibre cord 6mm (m) 0.6
30 00 11 Glass fibre cord 10mm (m) 1.4
30 00 30 Ceramic fibre paper 1x25mm (m) 2
34 3104 00 Grate front, V-37 1
34 31 04 01 Grate rear, V-37 1
9 32 00 07 Firewood hatch 1
10 32 00 18 Draught hatch, V-37 1
37 00 60 Handle knob 25 mm 2
28 38 00 11 Manometer 1
27 38 00 10 Thermometer 1
38 00 30 Flue gas thermometer 50-500°C 1
44 00 02 Pipe cleaner 89 mm 2
44 00 05 Pipe cleaner 595x80x60/30mm 1
44 00 11 Spring steel shaft 1500 mm 2
15b 44 01 53 Inlet 3-pole female 1
44 01 54 Panel fixing 3-pole 2
17a 44 01 59 Plug 3-pole 1
16b 44 01 66 Outlet 5-pole for panel 1
16a 44 01 67 Plug-on contact 5-pole 1
17b 44 01 68 Inlet 3-pole male 1
15a 44 01 69 Plug 3-pole 1
44 02 25 PowerJet gas lighter 1
4 50 00 11 Fan V-37F 1
70 00 75 Insulation for cover of flue gas fan 1
70 00 86 Fan gasket 1
71 01 90 Base plate of ash hatch 1
35 71 01 95 Combustion tunnel 1
71 01 98 Bypass damper 1
71 02 00 Damper arm 1
71 02 57 Inner ash hatch 1
29 71 02 60 Turbulator tool 1
71 02 61 Inner damper of draught hatch 1
904 56 Ash rake 1
7 909 21 Cleaning hatch 1
71 11 33 Flue pipe 1
Component specification

Weight, empty 705 lb
filled with water 970 lb
Volume 32 gal
Pressure, design 22 psi
test 31 psi
Pressure drop, water flow 0.14 gal/s 0.145 psi
Temperature, design 220 °F
operating max 220 °F
Output wood, moisture content 16 ±4% 126 kBTU
Output, pellets 143 kBTU
Combustion chamber, volume 29.9 gal
depth 21.7 in
Wood, length 20 in
diameter 6 in
Burning cycle, combustion chamber full, moisture 16±4% 2.5-3 h
Firewood hatch, w x h 11.4 x 9.3 in
Chimney requirement, height 11.5 ft
flue duct recommended Ø 5.71 in
25.6 in2
flue duct min Ø 4 in
12,6 in2
draught
0.04 in H2O
Flue gas temperature 355 °F
Voltage 115 V, 60 Hz
Current 0.3 A
Protection class IP 21
Boiler group as per EN 303-5 3
UL391, CSA-B366.1, ETLM78-1
Certified by Guardien Fire Test Labs
Tested according to method 28 WHH PTS

Värmebaronen Vedolux 37
16
Värmebaronen AB
Arkelstorpsvägen 88
291 94 Kristianstad
Sweden
[phone]
[phone]
www.varmebaronen.se
[email protected]