HVS boilers are for the combustion of untreated, split, wood logs with a log length from 33 up to 100 cm according to boiler size.
You can choose between two different designs, either with lambda control (HVS LC) or without (HVS E).
The boilers are available with a nominal heat output in 16, 25, 40, 60 and 100 kW.
Just fill in logs, light the wood and everything else is working fully automatically. The large fuel
chamber provides a long combustion period. The integrated fan guarantees an unproblematic
start. The heating up flap and its safety door lock do not give way for smoke emission. Moreover,
the combustion is stabilized throughout the whole combustion period by the fan
and enables an unproblematic operation. Even the boiler size with 25kW can comfortably
be filled with 0,5m logs through the large fuel chamber door. An overlength of the logs is,
at least to some extent, no problem due to the depth of the fuel chamber. Long refueling
intervals are the result of the large filling capacity. An increase in performance and very
good exhaust gas values are achieved by a „hot air duct“ inside the tank.
The outstanding concept of the HVS boiler which has been further developed by
permanent innovations has now reached the next generation.
The permanently increasing environmental impact by dust and CO2 urges the industry on
new developments and more modern technology in all areas. A modern and modular
control concept of our wood log boiler series HVS LC ensures more performance and a
low, environmentally friendly pollutant emission due to the serially integrated lambda
sensor which observes permanently the exhaust gas values.
With the help of the integrated boiler and exhaust gas logic the intelligent control
recognizes the requirements of energy. Due to the modulating air supply the boiler is
able to react to a possible power reserve and can therefore ensure an almost perfect
exploitation of combustibles. This means the highest possible comfort for you and a
steady and even combustion for your wood.
You can only achieve an optimal efficiency factor with a perfectly aligned system. Therefore, we
generally recommend our high quality stratification tanks SLS with integrated, patented,
stratification system. The produced heat of the wood log boiler can be perfectly stored in this
kind of tank. The stored thermal energy is relieved into the heating system when needed.
This keeps your fuel consumption as low as possible and even preserves the environment.
The HVS LambdaControl is available in boiler sizes 16, 25, 40, 60 and 100 kW nominal heat output
The HVS Economic achieves very clean
emission values even without lambda
control. Due to the use of latest control
technology a product was created which
under-runs the
already determined exhaust gas requirements.
You can make the best possible use
of the combustible with this boiler
series and you also respect the environment.
Each model is equipped with the electronic
combustion control. The permanent
observation of the exhaust gas and boiler
temperature means perfect comfort for
you and a steady and even combustion
for your logs. The physics of the combustion
process has
been adopted from nature and integrated
into our boilers in an excellent way.
The logical cooperation of exhaust gas
and boiler temperature in certain intervals
is used to add the combustion air in
an optimized way.
The HVS Economic is available in boiler sizes 25, 40, 60 and 100 kW nominal heat output
Measures and weight | type | 16 LC | 25 E 25 LC |
40 E 40 LC |
60 E 60 LC |
100 E 100 LC |
A height | mm | 1135 | 1135 | 1370 | 1420 | 1420 |
B width | mm | 590 | 590 | 590 | 760 | 760 |
C width incl. slider | mm | 645 | 645 | 645 | 785 | 785 |
D depth | mm | 840 | 1070 | 1070 | 1260 | 1650 |
E height outlet | mm | 1075 | 1075 | 1310 | 1400 | 1400 |
F height exhaust pipe (middle) | mm | 890 | 890 | 1110 | 1170 | 1170 |
G height return | mm | 115 | 115 | 125 | 215 | 215 |
H heigth draining | mm | 55 | 55 | 70 | 135 | 135 |
Ø flue spigot | mm | 159 | 159 | 196 | 196 | 196 |
Ø boiler flow line/ boiler return | Rp | DN 50 (2″) | DN 50 (2″) | DN 50 (2″) | DN 50 (2″) | DN 50 (2″) |
Ø safety heat exchanger | G | DN 20 (¾″) | DN 20 (¾″) | DN 20 (¾″) | DN 20 (¾″) | DN 20 (¾″) |
Ø immersion sleeve for safety heat exchanger | Rp | DN 15 (½″) | DN 15 (½″) | DN 15 (½″) | DN 15 (½″) | DN 15 (½″) |
Ø draining | Rp | DN 15 (½″) | DN 15 (½″) | DN 15 (½″) | DN 20 (¾″) | DN 20 (¾″) |
boiler weight | kg | 400 | 440 | 525 | 790 | 990 |
fuel chamber/fuel consumption | type | 16 LC | 25 E 25 LC |
40 E 40 LC |
60 E 60 LC |
100 E 100 LC |
permissible fuel | untreated,
split wood log, residual moisture
16% ±3% |
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recommended wood log length | mm | 330 | 500 | 500 | 700 | 1000 |
fuel chamber depth | mm | 370 | 560 | 560 | 750 | 1085 |
fuel chamber height | mm | 490 | 490 | 750 | 730 | 730 |
fuel chamber width | mm | 440 | 440 | 440 | 575 | 575 |
dimension of the filling hole w/h | mm | 435/255 | 435/255 | 435/255 | 575/318 | 575/318 |
fuel chamber capacity, volume liter approx. | L | 80 | 116 | 180 | 310 | 455 |
max. filling weight (beech) approx. | kg | 20 | 30 | 48 | 80 | 120 |
fuel consumption at nominal load (beech) approx. | kg/h | 4,5 | 7,1 | 11,2 | 17 | 25 |
combustion period at nominal load (beech) approx. | Std. | 4,4 | 4,2 | 4,3 | 4,5 | 4,5 |
Exhaust gas routing | type | 16 LC | 25 E 25 LC |
40 E 40 LC |
60 E 60 LC |
100 E 100 LC |
recommended min. chimney cross section Ø | mm | 140 | 150 | 180 | 180 | 200 |
draft requirements | Pa | 15 - 25 | 15 - 25 | 15 - 25 | 15 - 30 | 15 - 30 |
effective minimum chimney height | m | approx. 7 | ||||
exhaust gas mass flow | g/s | 10 | 16 | 25 | 38 | 64 |
modulating exhaust gas temperature | °C | approx. 180 (±30) | ||||
recommended exhaust gas routing | m | effective length < 1,5mtr (max. 2 bends) | ||||
barometric damper | definitely recommended |
electrical data | Typ | 16 LC | 25 E 25 LC |
40 E 40 LC |
60 E 60 LC |
100 E 100 LC |
mains voltage/frequency | V/Hz | 230/50 | ||||
power consumption - standby | W | < 0,3 | ||||
power consumption - operation (HVS E/LC) | W | 55 | 40/55 | 40/55 | 80/95 | 80/95 |
hydraulic | Typ | 16 LC | 25 E 25 LC |
40 E 40 LC |
60 E 60 LC |
100 E 100 LC |
min. buffer tank volume 1) | l | 1000 | 1500 | 2200 | 3300 | 5500 |
manufacturer's recommendation 1) | l | 1500 | 2000 | 3000 | 5000 | 6000 |
min. tube dimension (CU-/steel precision tube) Ø2) | mm | 28 | 28 | 35 | 42 | 54 |
min. tube dimension (steel tube) 2) | DN 25 (1″) | DN 25 (1″) | DN 32 (1 ¼″) | DN 40 (1 ½″) | DN 50 (2 ″) | |
required boiler return line temperature | °C | 70 |
Find out more about wood heatings