Astra P-7 User manual

Astra P-7
USER MANUAL
CONTACT INFORMATION:
MACHINERY PLANT“ASTRA”AB
ULONŲ G. 33, LT62161 ALYTUS, LITHUANIA
TEL.: [phone]
EMAIL: INFOASTRA.LT
WWW.ASTRAGAS.LT
ASTRA MACHINERY PLANT AB • ANNO 1929

3
TABLE OF CONTENTS
1. SAFETY REQUIREMENTS ..................................................................................................4
2. INTENDED USE ...............................................................................................................4
3. TECHNICAL DESCRIPTION ................................................................................................5
• Components of the Stove...........................................................................................................................................5
• Technical Features ......................................................................................................................................................6
• Circuit Diagram ..........................................................................................................................................................7
4. FUEL.............................................................................................................................8
5. PLACEMENT, ASSEMBLY AND INSTALLATION ......................................................................8
• Considerations for Placement of the Stove.................................................................................................................8
• Patterns of Installation...............................................................................................................................................9
6. TRANSPORTATION, STORAGE, UNPACKING.......................................................................12
7. OPERATION..................................................................................................................13
• Display and the Remote Control...............................................................................................................................13
• Navigating the Menu ...............................................................................................................................................14
• Menu Structure........................................................................................................................................................15
• Setting the Clock......................................................................................................................................................15
• Setting the Weekly Timer Programs .........................................................................................................................15
• Setting the Room Temperature ................................................................................................................................17
• Output Power Regulation.........................................................................................................................................17
• Regulation of the RoomVentilator...........................................................................................................................18
• Setting the Fuel Options...........................................................................................................................................18
• Modifying the Setup Options ...................................................................................................................................18
8. MAINTENANCE AND CLEANING.......................................................................................19
• Cleaning Schedule....................................................................................................................................................19
• Exterior Surfaces Cleaning........................................................................................................................................20
• Heat Exchanger Tubes Cleaning ...............................................................................................................................20
• Ashes Drawer Cleaning.............................................................................................................................................20
• Combustion Chamber Cleaning................................................................................................................................21
• Fire Pot Cleaning......................................................................................................................................................21
• Vermiculite Plates Cleaning......................................................................................................................................21
• FlameTrape Cleaning...............................................................................................................................................21
• Flue Channels Cleaning............................................................................................................................................23
• Pellet Hopper Protection against Burning................................................................................................................23
• Protective Handle.....................................................................................................................................................24
9. TROUBLESHOOTING......................................................................................................24
• Alerts .......................................................................................................................................................................24
• Errors........................................................................................................................................................................25
• Power Supply Failure................................................................................................................................................25
10. WARRANTY TERMS AND CONDITIONS............................................................................26
11. ACCEPTANCE CERTIFICATE............................................................................................26
SELLING CARD .................................................................................................................26
STOVE INSTALLATION PROTOCOL........................................................................................26
WARRANTY AND POST-WARRANTY REPAIR CARD.................................................................27
DECLARATION OF CONFORMITY .........................................................................................28

4
Astra P-7 USER MANUAL
1. SAFETY REQUIREMENTS
The stove must be installed and tested by qualied personnel instructed and authorized by Astra representing company. Please carefully
read this use and maintenance manual before installing and putting the stove into operation. For further information, please contact your
local Astra dealer.
During the operation of the stove, strictly observe the following safety requirements:
• The stove is designed to be fuelled exclusively with high-quality wood pellets with a diameter of 6 mm as described in chapter 4 of
this user’s guide;
• Do not attempt to operate the stove using traditional wood!
• To avoid potential re hazards, the stove should not be used for incineration of household garbage under any circumstances!
• Before placement of the stove, check with local building codes to assure that the installation will comply with applicable technical
and legal norms;
• Installation of the stove and the electrical connections, initial function checks and adjustments must be performed by qualied and
authorized personnel;
• Improperinstallationorpoormaintenance(notcompliantwithinstructions ofthisuser manual)mayendangersurroundingproperty
and/or human health. In the case of the aforementioned product misuse, Astra is exempted of civil and criminal responsibility;
• When linking the stove to a ue, all ducting works must be completed prior to connecting to the electrical supply;
• There must be sucient air circulation in the room where the stove is installed;
• To avoid a potential re hazard, never open the door of the stove while burning goes on!
• To assure maximum safety while using your stove be sure to follow all use and maintenance operations as described in this manual;
• This pellet stove should not be operated by people with physically or mentally challenging conditions, or who have no experience
using such devices, unless they are under the direct guidance of a qualied and responsible person;
• The stove must not be operated or played with by children;
• To avoid a potential re hazard, never operate the stove with its door open, or if the door glass is cracked;
• While the stove is in operation, its surfaces, the glass, the door handle and ue ducting become very hot. Use extreme caution and
be sure to use heat-resistant personal protective equipment when touching these components;
• Kindle the stove only after the daily inspection described in this manual has been performed;
• To avoid a potential re hazard, do not dry laundry on or near the stove. Keep clothes and other ammable objects at a sucient
distance from the stove;
• For greatest safety, carefully follow the cleaning and maintenance schedule listed in table on page 19 of this manual;
• Do not turn o the stove by unplugging it from the electrical supply;
• Do not clean the stove until a body and ashes have cooled down completely;
• Do not remove the protection grid out of the pellet hopper;
• To avoid the risk of electric shock, do not touch the stove while barefoot and wet;
• The stove must be connected to the electrical supply with an easily accessible plug;
• Do not modify the design of the stove;
• Do not wait for components of the stove to become totally worn before replacing them. Replace a worn component before it
is completely disabled to prevent possible accidents caused by the sudden breakdown of the components. Perform periodic
maintenance checks as described in chapter 8 of this manual.
This stove has been designed to function in all climatic conditions. In the circumstances of particularly adverse weather (high wind,
freezing), safety systems may automatically engage and switch o the stove. If this occurs, please contact technical assistance for
directions. In any case, do not disable the safety systems.
2. INTENDED USE
The Astra pellet stove is an eective home heating appliance intended to heat a room with hot blown air. It simultaneously performs
the function of a replace as you view the re through the temperature-resistant glass. It can be installed in all kinds of residential spaces
where people work, relax or spend their time. In order to reduce any possible danger to human health and property, the stove Astra is
equipped with special safety devices. For added convenience, control of the appliance can be fully automated. Once programmed, the
Astra pellet stove is capable of maintaining dierent heating output levels at a variety of pre-set time intervals over the course of a day,

5
Astra P-7 USER MANUAL
seven days a week; it sustains a set air temperature in the room with the help of an integrated temperature sensor; and it even makes the
decision to stop the appliance if unfavourable safety conditions arise: draught of the ue disappears or has fallen substantially, the door
of the stove is opened during the operation; the pellet hopper heats up; or other potentially harmful events happen. In addition, the stove
can be operated by a remote control unit (available by special order).
Only 6 mm wood pellets are used for fuelling the Astra stove. The appliance is not designed to be operated with any other kind of fuel
because other fuels leave a greater content of ashes and slag.The latter then will cause the re pot to clog, activating emergency stop of
the appliance. In order to enjoy the pleasant heat of the stove without unpleasant interruptions, use only high-quality 6 mm wood pellets
and keep the combustion chamber, re pot and ue channels of the stove cleaned at all times.
3. TECHNICAL DESCRIPTION
• COMPONENTS OF THE STOVE
Wood pellets from the hopper 4 are transported by means of the auger 5 into the re pot 19 (Fig. 1).The electrical igniter 18 kindles
the pellets. The ame and hot ue gases rise to stainless steel heat exchanger 1, descend afterwards by two lateral ue channels
1 2 3
4
5
6
7
8
9
10
11
13
15
16
17
18
19
20
12
14
Fig. 1 Components of the stove
1. Stainless steel heat exchanger; 2. Flame trap; 3. Display unit; 4. Pellet hopper; 5. Auger; 6. Temperature sensor of the hopper
safety thermostat; 7. Room ventilator; 8. Gear motor; 9. Air intake pipe; 10. Air intake ow sensor; 11. Control board; 12. Hopper
safety thermostat; 13. Smoke exhaust pipe; 14. Room temperature sensor; 15. Pressure sensor; 16. Exhaust fan; 17. Smoke
temperature sensor; 18. Electrical igniter; 19. Fire pot; 20. Heat exchanger tubes scraper.

6
Astra P-7 USER MANUAL
surrounding the combustion chamber and are released with help of exhaust fan 16 into the chimney connection pipe 13. The room
ventilator 7 draws air from surroundings and blows it through the hot heat exchanger tubes 1, thus supplying heat.
• TECHNICAL FEATURES
Our product is manufactured in accordance with the following directives:
2006/95/EC– Low voltage directive;
2006/42/EEC – Machinery directive;
2004/108/EEC– Electromagnetic compatibility directive;
89/106/EEC – Construction products directive.
The following standards were applied for the Astra P-7 pellet stove:
EN 14785 – Residential space heating appliances red by wood pellets;
EN 60335-1 – Safety of household and similar electrical appliances;
EN 60335-2 – Safety particular requirements for fuel burning appliances having electrical connections;
EN 55014-1; EN 55014-2; EN 61000-3-2; EN 61000-3-3 – Electromagnetic compatibility.
Model of the stove Astra P-7
Heat transfer medium Air
Rated heating output 7.8 kW
Reduced heating output 2.6 kW
Period of complete burning of one full fuel load, min-max 9-30 hrs
Weight 85 kg
Height 910±10 mm
Width 453 mm
Depth 500 mm
Flue gas pipe diameter 80 mm
Air intake pipe diameter 35 mm
Capacity of the pellets hopper 15 kg
Fuel: wood pellets 6 mm
Hourly fuel consumption, min-max 0,5-1,6 kg
Heated space volume 150 m3
CO emission level (at 13% O2)
Reduced output 0,04 %
Rated output 0.019 %
Eciency 85 %
Minimum chimney draught 10 Pa
Average smoke temperature
Reduced output 145 °C
Rated output 185 °C
Average electrical power consumption
(without igniter)
Reduced output 60 W
Rated output 100 W
Rated voltage 230 V
Rated frequency 50 Hz

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Astra P-7 USER MANUAL
LN
t°C t°C
O01 O02 O03 O04 I01
LPE N
T02 T01
GND I02 T03
GND F03 F01/02 +VIO
+-
T1 T2F1
B1
S1 M2 M3 SK1 SK2
M1
PE
L
N
1 2 3 457
1234
5
7
12P12
3
CN5 CN7 CN9
CN4 CN10 CN8
CN1
L1
N1
8910 11
6A
6.3mm
0.5-1.5mm²
4.8mm
0.5-1.5mm²
ø4mm
0.5-1.5mm²
ø5mm
0.5-1.5mm²
ø4mm
4-6mm²
6.3mm
0.5-1.5mm²
0.5-1.5mm²
L1
N1
1
2
P1
2
3
15 1816 17
LN
896
LCD
12 13 14
Fig. 2 Circuit diagram of the stove.
• CIRCUIT DIAGRAM
The electrical circuit diagram of the stove is presented below in Fig. 2. The denomination of elements is as follows:
T1 – Room temperature sensor; T2 – Smoke temperature sensor; B1– Electrical (250 W) igniter; M1 – Fan 1- smoke exhaust fan;
M2 – Fan 2- room ventilator; M3 – Auger gear motor; SK1– Pellet hopper safety thermostat; SK2 – Dierential pressure sensor;
F1 – Air ow sensor.
User interface
Service socket
Mainboard
Green
Braun
White White
Green
Red
Blue
Black
Battery
Fuse: T 4A

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Astra P-7 USER MANUAL
4. FUEL
The wood pellets are made from sawdust and wood shavings. The materials used for production of the wood pellets cannot contain
any unnatural components, for example, synthetic glue or paint. The density of the wood pellet varies according to the type of wood
and can be 1.5 – 2 times greater than that of conventional wood. The diameter of cylindrical rods is 6-10 mm and their length can vary
between 10 and 50 mm. Their weight is equal to about 650 kg/m3. Due to the low content of humidity (5-10%) wood pellets have
high energy content.
DIN 51731 standard denes the quality of wood pellets:
Length 10-50 mm
Diameter 6 - 10 mm
Weight 650 kg/m3
Caloric value 4.9 kWh/kg
Residual humidity 6-12%
Ashes content <1.5%
Specic weight >1.0 kg/dm3
Do not put a bag of pellets on the surface of the stove during the loading operations!
The pellets must be transported and stored in a dry place. They
swell after contact with moisture and become unsuitable for
ring. The pellets must always be protected against humidity
both during transportation and storage.
Astra strongly advices using the 6 mm diameter
wood pellets for fuelling the Astra stove.
5. PLACEMENT, ASSEMBLY AND INSTALLATION
•CONSIDERATIONS FOR PLACEMENT OF THE STOVE
The residential space considered for the placement of the stove must meet the following technical requirements:
• Pipe connection to a chimney of 8 cm diameter must be installed;
• The supply of air for combustion must be assured either from other ventilated rooms through opening of at least 100 cm2, or directly
from outside through the 35 mm air intake pipe;
• The permanent humidity of air in the room must not exceed 80%;
• A connection of electrical supply of 230V, 50 Hz must be installed;
• CE compliant earthing system must be present.
The placement of the stove is important for the successful heating of the room. Please, take into account the next considerations
before deciding where to place the stove:
• If the supply air needed for combustion is to be taken from another room, that room must be ventilated or have air inow from
outside. The stove can consume up to 40 m3 of air per hour at maximum, so the sucient amount of it must be supplied either from
outside or from another inner space of a house;
• The stove cannot be placed in the bathroom, near a shower or bath, or in another space with high humidity level;
• If wooden ooring is present in the desired place of installation, rst cover it with a protective re-resistant plate made from steel,
glass or ceramic;
• The room in which the stove is to be placed must have at least 30 m3 of volume;
• It is recommended to place the stove in the largest room of a house or in a room which has good connectivity with other inner spaces
of a house, so that the maximum circulation of heat would be ensured;
• Connection to the electrical supply must be done through a grounded socket. If the cable of the stove is not long enough to reach the
nearest socket, use a grounded extension cable;
• If another heating installation (stove, replace) without autonomous air supply is present in the room of considered placement of the
Astra stove, evaluate, whether there would be a sucient air supply for both appliances working simultaneously and if that kind of
double installation is allowed by local technical regulations;
The stove must be installed and assembled only by qualied personnel.
• The stove must be placed so that easy access to it and to a chimney is ensured.
• The joints of chimney pipes must have temperature resistant gaskets in order to ensure sucient tightness of the connections;
• A separate chimney is mandatory for the Astra stove installation. It is not permitted to connect the stove to a shared ue;
• The connection of the air intake tube of the stove to an outside is not obligatory. If the air for combustion is taken from inner spaces

9
Astra P-7 USER MANUAL
of the house, these must be ventilated so that up to 40 m3of air inow is ensured;
• Do not use a mesh on the top of a chimney because it can reduce draught and cause problems for the stove functioning;
• When designing the chimney piping for the stove, do not use more than 3 pieces of 90° bends. The biggest distance between the
adjacent bends must not exceed 2,5 meters horizontally;
• If the stove is installed near non-ammable walls, a minimum distance of 10 cm should be left from the rear stove panel to the wall.
This distance must be increased to 20 cm, if the wall is covered with ammable nish. In either case, a 50 cm free space must be left
from lateral sides of the stove and 150 cm- from the front side. It is recommended to increase the mentioned distances further, if
very easily ammable objects like curtains are present in the vicinity of the stove.
Fig. 3 Chimney installed outside the house.
Yes
YES NO
FIG.6FIG.9
YES
FIG.10 FIG.5
NO
FIG.8
YES YES
FIG.7
2500 mm.
max.
H > 4000 mm
H > 1500 mm
8
3
4
1 2
9
10
11
5
7
6
12
Insulated ue
Chimney cap for rain protection
Insulated chimney tee with
condensation drain pipe
Fig. 4 Incorrect installation - with 90° bend as the rst connecting part.
No
YES NO
FIG.6FIG.9
YES
FIG.10 FIG.5
NO
FIG.8
YES YES
FIG.7
2500 mm.
max.
H > 4000 mm
H > 1500 mm
8
3
4
1 2
9
10
11
5
7
6
12
Ashes accumulate in the 90° bend
• PATTERNS OF INSTALLATION
A 90° bend should not be installed as the rst
connecting part – ashes would quickly obstruct a
passage for smoke causing unexpected problems
for draught of the ue (Fig 4).
This type of installation (Fig. 3) requires an
insulated ue, as the whole smoke pipe is
installed outside the house. A chimney tee with
an inspection cap and condensate drain pipe is
mounted in the lower part of the ue.

10
Astra P-7 USER MANUAL
YES NO
FIG.6FIG.9
YES
FIG.10 FIG.5
NO
FIG.8
YES YES
FIG.7
2500 mm.
max.
H > 4000 mm
H > 1500 mm
8
3
4
1 2
9
10
11
5
7
6
12
Fig. 5 Smoke pipe installed partly inside a house and partly inside an existing ue.
Yes
Chimney tee with a cap and a
peephole
45° bend, Ø 80 mm
Chimney cover plate
Airtight steel sheeting
YES NO
FIG.6FIG.9
YES
FIG.10 FIG.5
NO
FIG.8
YES YES
FIG.7
2500 mm.
max.
H > 4000 mm
H > 1500 mm
8
3
4
1 2
9
10
11
5
7
6
12
Fig. 6 Whole smoke pipe installed inside a house.
Yes
Chimney tee with a cap and a
peephole
Chimney cap for rain
protection
This type of installation (Fig. 5) does not require
an insulated ue as the smoke pipe is assembled
partly inside the house and partly inside an
existing ue. A chimney tee with a peephole cap
is installed in the lower part of the ue.
Please note the use of two 45° bends in order
to guarantee that ash falls into the chimney tee
with the cap and the peephole.
This type of installation (Fig. 6), does not require
an insulated ue, because the whole smoke pipe
is assembled inside a house. A chimney tee with a
peephole is mounted in the lower part of the ue.