Strebel VARAN 1.14, VARAN 1.20 Installation And User Manual
Pellet Boiler Varan 1.14., 1.20
Manual For Installation And Useage
Product Information
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
3
Operation
When staring the boiler for the first time, it is possible that a noticeable odour development caused by heat-resitant coatings or
painting of single boiler parts may occur. During operation, these
coatings will cure and the odour will fade out.
Note that certain surfaces of the boiler will heat up during operation. If you come in contact with parts of the boiler, make sure
that they have cooled down properly or use suitable protective
gloves. Make sure that pieces of clothing and other heat-sensitive
materials do not come in contact with the boiler.
Because of the changes in temperature during heating up and
cooling down, boiler parts may give out expansium noises (mostly
knocking or crackling). The ocurrence of such sounds is no manufacturing or operation defect.
If you open the combustion chamber door during operation or
when the boiler is still warm, particles of ember or ash may fall to
the floor. Remove them with heat-restistant tools and protective
gloves. .
The installation of a hydraulic group is mandatory with boilers of this type series.
Operation Parameters
The user may only modify the operation parameters in the range
that is prescribed by this manual. The use of other settings than
those listed in this manual can cause malfunctions in the system.
The operating pressure must never exceed 2,5 bar. A boiler temperatur of above 90˚C is not allowed.
Because of possible risk of frost inside the aquiferous heating
pipes, it is recommended to not switch-off the boiler at outdoor
temperatures below 0°C if the boiler is the only heating element
in the system.
Spare Parts
To replace defective parts of the boiler, only use original STREBEL
spare parts.
Prescibed Fuel
The boiler is construdef only for the combustion of wood
pellets. Using any other fuel is prohibited. In any case, do
not use pieces of wood, paper, oil, plastic or other materials as fuel.
More information in chapter 3.
Safety Instructions
This User Manual
Every person who is intending to operate this boiler is obligated to read this manual carefully,
especially the safety instructions. This includes individuals which
are cleaning or maintaining the boiler.
Otherwise, the legal warranty expires.
Please keep and preserve this manual.
Usage Of This Boiler
The manufacturer is not responsible for damages resulting from
improper installation, maintainence or operation. In this case, the
user is liable and the legal warranty expires.
Respect local provisions and legal guidelines when setting up,
installing, operating and disposing the boiler. The boiler must be
installed by expert personnel. Do not make unauthorized modifica
-
tions on the boiler or its water and exhaust connections.
To transport the boiler, make sure that the transport aids and the
underground that the boiler has to traverse over are able to sustain its weight. The underground on which the boiler is stored or
installed on should also have the suitable load capacity.
So not expose the boiler to weather conditions. The installation
and storage is only authorized indoors (VDE 0100 part 200). Do
not cover the boiler or lean/place objects directly beside it. The
installation in wet spaces/humidors is not permitted. The boiler is
not protected against spray water.
The person responsible for installation and/or implementation
must inform the user about the correct operation and cleaning of
the boiler. Only use the boiler if it is installed correctly. Always
adhere to this user manual. Malfunctions are to be repaired as
soon as possible.
This boiler may only be used for the purposes it is intended and
was manufactured according to current safety requirements. Incorrect use may cause damage to the boiler or to other objects in
in close proximity. Accidents, injury or even death of the usermay
occur if the safety instructions are violated.
The operation of this appliance by children or individuals with
restricted perception or motoric abilities, each without accompaniment, is prohibited. Pay attention that children or pets do not
comke in direct contact with the boiler or climb it.
It is prohibited to place heavy objects on the boiler or stepping
onto it.
Safety Instructions
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
4
Safety Instructions
Possible Risks
If the combustion chamber door or cleaning openings are left open
during operation, carbon monoxide is able to discharge from the
boiler. Do not leave them open longer than necessary. Insufficient
air supply during operation is lethal. It is prohibited to close the
openings of the boiler or the installation room that provide the
fresh air needed for operation.
This boiler has electric components which are live during operation, as well as movable parts on the inside. Under any circumstances do not stick a finger or other objects in the openings of the
boiler. There is a danger of electric shocks or burn injury, as well
as property damage.
In case water is leaking from the boiler, stop its operation immediately and have competent service personnel at the damage.
Minimum Distance Of Flammable Materials
Keep flammable materials and objects away from the boiler and
make sure that the insulation material below the boiler protects
the floor from harmful heat exposure. The minimum distance flammable objects have to be kept abway from the boiler is stringently
prescribed and is subject to regional directives. Ask your chimney
sweep for detail information.
In case the boiler is not installed in a seperate boiler room but in
the living space with an open flue, combustion air is taken from
the living space as well.
The minimum distance from the boiler and its exhaust pipe tomaterials with low or intermediate flammability is 100 mm. The
minimum distance from easily flammable objects is 200 mm. The
latter also counts for materials if their flammability is unknown.
Fresh Air Intake
Boilers need a suitable air supply to maintain combustion.
Open Flue: Under certain circumstances, if the fresh air is taken directly from the boiler room, an insufficient supply of oyxgen
needed for combustion may occur. This is especially prominent in
houses or flats with tightly sealed doors and windows. Operating
the boiler without constant supply of outside air can cause sevee
problems in operation. It is recommended to install an automatic
venting system in the builduing or use a balanced flue system.
Balanced Flue: The fresh air opening is connected with a sealed
pipe which takes air from the outside or a seperate room with
constant fresh air supply.
Keep the air supply pipe as short as pos-
sible. It is recommended to install the pipe with the capability to
be shut off (according to EnEV) to prevent humidity from entering
during longer operation pauses.
Avoid using combustion air from the flue. Because of the flue drau
-
ght, there is always negative pressure.
The simultaneous operation of artificial ventilation (e.g. cooking
hood) and the pellet boiler in the same room is prohibited. The air
suction may cause problems in boiler operation and discharge of
carbon monoxide.
Talk to your chimney sweep about regional prescriptions
regarding air supply.
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
5
Contents
Boiler Features
1 Boiler Features
1.1 General Information
The STREBEL Varan 2.20 is a pellet boiler for aquiferous central heating systems with radiators and/or underfloor heating. It
is designed to be set up directly in the living space (without an
external boiler room neded). During operation, heat is transmitted
directly into the room vis the boiler surface as well as into the
heating system.
Components
The integrated pellet tank is filled by hand and holds 45 kg or 75
litres of wood pellets. The pellet discharge takes place via auger,
a silent, energy-saving reduction gear and a downpipe.
An expansion vessel (10 litres), an electronically controlled Wilo
HE circulator pump and a safety group are already installed in the
compact boiler construction. The controller has a daily, weekly and
weekend programme as well as three programmable performance
levels.
1 Boiler Features ............................................................................................................................... 5
2 Technical Data ................................................................................................................................ 6
3 Fuel ................................................................................................................................................. 8
4 Construction .................................................................................................................................. 9
5 Installation...................................................................................................................................... 12
6 Controller ........................................................................................................................................ 18
7 Operating Phases ........................................................................................................................... 26
8 Maintenance .................................................................................................................................. 28
9 Possible Malfunctions .................................................................................................................... 30
10 First Start-Up .................................................................................................................................. 32
11 Boiler Disposal ............................................................................................................................... 32
Varan 1.14, 1.20
6
Technical Data
2 Technical Data
Pellet Boiler
Rated heat output kW
Rated output into the heating system kW
Rated output directly from surface kW
Distance from floor to centre of exhaust connection mm
Exhaust connection mm
Flue draught Pa
Efficiency %
Pellet tank volume kg/Litres
Weight kg
Water volume Litres
Operating/testing pressure bar
Boielr temperature min./max. °C
Return temperature min. °C
Power supply
Connections flow/return Inch
Flue gas temperature (rated output, min. output) °C
Energy label (Range A++ to G)
Changes in models reserved. Dimensions not binding!
Varan 1.14 Varan 1.20
11.9 20
10.45 18.7
1.45 1.3
180 134
80 80
11 11
>91 >91
45/75 45/75
192 235
24 38
2.5/5 2.5/5
60/90 60/90
55 55
230 V /50 Hz 230 V /50 Hz
1“ 1“
135/90 135/90
A++ A++
Schematic section Varan 1.20
Schematic section Varan 1.14
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
7
Technical Data
2.1 Dimensions (in mm)
mics, ceramic-based insulation etc.). Such plates have to be
larger than the floor area of teh boiler itself.
- Keep furniture and other objects at leat 1 metre away from
the boiler.
- The distance between the boiler and immobile, solid objects
(walls pillars etc) has to be at least 40 cm (measure B), 20 cm
from the backside (measure C) and 100 cm from the front
(measure A). These distances are necessary to allow cleaning
and maintenance of the boiler.
2.2 Recommended Space For Service And Maintenance
When placing the boiler prior to installation, make sure of the following:
- The boiler must be installed as close to the flue and fresh air
connections as possible.
- For the operation of the appliance, a power supply of 230 V
and 50 Hz is needed. Keep the connection line as short as
possible and avoid using extension cords.
- If possible, install the boiler in the largest, most central room
of the building.
- The boiler must not be installed in bedrooms or rooms that
are inseperatable from the beedroom througha door.
- Do not operate other boilers (for wood or pellets) inside the
room where the Varan boiler is installed to keep up the
necessary air supply.
- The installation room must have windows or doos that can
be opened for additional fresh air supply or there should be
at least an adjacent room connected to the installation room
trough a non-flammable pipe that is open at any given time
during operation. This adjacent room must have windows or
doors that can be opened to provide fresh air.
- In case the boiler is placed on flammable underground
(e.g. laminate, parquet, carpet), it must be insulated with
a plate consisting of non flammable material (steel, cera-
Der integrierte Pelletsbehälter befindet sich
im hinteren Teil des Kessels und ist über
eine Klappe an der Geräteoberseite zugäng-
lich. Der Behälter wird von Hand befüllt und
fasst 45 kg bzw. 75 Liter Pellets. Eine schräg
ansteigende Pellets-Zubringerschnecke mit
Getriebemotor transportiert den Brennstoff
zum Fallrohr, über das er in die Brennertasse
fällt. Diese Bauweise verhindert, dass Flam-
men aus dem Brennraum auf den Brennstoff
im Behälter übergreifen können.
Der Abgasventilator regelt die Verbrennung
und hält die Flamme mit einem kontinuierli-
chen Luftstrom konstant. Je nach Bedarf und
eingestellter Leistung variiert die Laufge-
schwindigkeit und der Pelletseintrag in den
Brennraum. Die automatische Zündung sorgt
jedes Mal für einen sicheren Betriebsstart.
Reinigung
Für eine unkomplizierte und schnelle Reini-
gung lässt sich die Brennerschale im abge-
kühlten Zustand mit einem Handgriff aus der
Ausnehmung im Brennraum herausnehmen.
Die Asche wird in einen feuerfesten Behäl-
ter ausgeklopft. Danach die Schale wieder
einsetzen.
Brennstoff
Als Brennstoff für alle Modelle eignen sich
handelsübliche Holzpellets (nach ISO 17225-
2:2014 Qualität A1, ENplus-A1, ÖNORM M
7134). Pellets in Form von Sackware (übli-
cherweise 15 kg/Sack) lassen sich gut sta-
peln und an einem trockenen Ort über viele
Jahre lagern.
Pellets – kleine Umrechnungstabelle
1 Kubikmeter Pellets wiegt ca. 650 kg.
1000 kg Pellets brauchen ca. 1,5 m³ Raum.
1 kg Pellets liefert ca. 5 kWh.
Der Heizwert von 1 kg Pellets entspricht
jenem von ca. 0,5 Liter Heizöl.
STREBEL Pellets erhalten Sie als Sackware
(15 kg) einzeln oder auf Palette. Abholung in
unserem Werk in Wr. Neustadt oder Haus-
zustellung zwischen Wien und Gloggnitz.
Falls wir Ihr Interesse geweckt haben, neh-
men Sie Kontakt zu uns auf. Sie erhalten
eine kostenlose und unverbindliche Beratung
durch unsere Außendienstmitarbeiter in der
jeweiligen Region – auf Wunsch auch vor
Ort.
Abmessungen und Anschlüsse
966
866
81
360
270
55
55
55
80
221
600 530
620
600
1050
1020
Rauchrohr
Rauchrohr
Rauchrohr
Frischluft
Frischluft
Füllhahn
Frischluft
800
740
785
241
356
100
Varan 1.14 Varan 1.20
Varan 2.20
126
126
VL VL
VL
RL
RL
RL
696
1130
1110
134
180
134
1265
1285
628
336
600
Füllhahn
Füllhahn
ÖNORM
M 7135
PELLE TS
Qualität A1
für alle gängigen
Pelletskessel
Exhaust connection
Exhaust connection
Return
Return
Filling valve
Filling valve
Flow
Flow
Fresh air
Fresh air
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
8
Fuel
3 Fuel
3.1 Required Fuel Quality
The boiler is construdef only for the combustion of wood pellets. Using any other fuel is prohibited. In any case, do not use
pieces of wood, paper, oil, plastic or other materials as fuel.
Wood pellets are zylindrical and made from wood scraps without additives or chemical binders. The pellets must show standard simensions and a low moisture content.
For the best possible combustion use pellets with the quality A1 according to ISO 17225-2:2014, with the seal ENplus-A1 and ÖNORM.
These standards comprise requirements in pellet quality, test regulations, control of production and labelling.
Parameter Unit Quality A1
Length mm 3.15 – 40*
Diameter mm 6 (+/- 1)**
Chaloric value MJ/kg min. 16.5
Mechanical strength % (Mass) min. 97.5
Dust (<3,15 mm) % (Mass) max. 1
Bulk density kg/m
3
min. 600
Water content % (Mass) max. 10
Ash content % (Mass) max. 0.7
Cinder softening temperature °C min. 1200
Arsenic content mg/kg** max. 1
Led content mg/kg** max. 10
Cadmium content mg/kg** max. 0.5
Chloine content % (Mass)** max. 0.02
Chrome content mg/kg** max. 10
Copper content mg/kg** max. 10
Nickel content mg/kg** max. 10
Mercury content mg/kg** max. 0.1
Sulphur content % (Mass)** max. 0.03
Nitrogen content % (Mass)** max. 0.3
Zinc content mg/kg** max. 100
* Max. 1% of the pellets (regarding mass) may exceed a length of 40 mm. More than 45 mm are not permitted.
** in anhydrous condition
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
9
Construction
4. Construction
4.1 Boiler Main Parts
Heat exchanger
with turbolators
Cover
Cleaning opening
Pellet tank
Combustion
chamber
Ash tray
Door with
special glass
Pellet auger
Controller processor
Flue gas fan Gear motor
Pressure switch
Circulator
pump
Flue gas channel
Igniter
Controller
Expansion vessel (10 litres)
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
10
4.2 Electrical Scheme
Construction
The hatched lines are wires which the qualified personnel must connect to the controller during installation. Connectors of additional
appliances have to pass via two connectors on the boiler backside. The connectors are bi-pole or tri-pole. The tri-pole connector is used
to connect a room thermostat.
Only use battery powered room thermostats! On the thermostat itself, the connection with an NC (normal closed contact) is used.
Varan 1.14, 1.20
Changes in models reserved.
Dimensions not binding!
11
Construction
4.3 Hydraulic Scheme
Key:
1. Boiler
2. Circulator pump (integrated in boiler)
3. Expansion vessel 10 litres (integrated in boiler)
4. Radiators, underfloor heating system (via temperature limiter)
5. Thermal valve (min. 55°C)
Always make sure to comply with regional prescriptions when installing a boiler.
STREBEL does not take responsibility for damages caused by a faulty installation of the boiler.
th
5
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