Alfa Plam ALFA 70 ET Manual

SOLID FUEL FLOOR HEATING STOVE
ALFA 70 ET, ALFA 70 EF,
ALFA 90 HET, ALFA 90 HEF
INSTALLATION AND MAINTENANCE MANUAL

TECHNICAL DATA:
TYPE ALFA 70ET
ALFA 70EF ALFA 90HET ALFA 90HEF
Nominal heat output(KW)
-for chopped wood/for brown coal briquette 12,05/12,7 14,39/14
Radiant heat output (KW)
-for chopped wood/for brown coal briquette 4,5/4,92 7,41/6,81
Heat output to water (KW)
-for chopped wood/for brown coal briquette 7,55/7,78 7,98/7,19
Waste gas temperature (ºC)
-for chopped wood/for brown coal briquette 259/237 223,5/195,5
CO content (O2=13%)
-for chopped wood/for brown coal briquette 0,43 / 0,22 0,30 / 0,22
Efficiency: 69/70.6 78,49/77,6
Required chimney draught (Pa) 10 12
Maximum operating pressure (bar) 2.5 2.5
Maximum operating temperature (°C) 90 90
Cook-stove dimensions W xDxH 700x600x850
900x600x850
Oven dimensions W xDxH
330x440x260 460x440x260
Diameter of chimney pot (mm) 120 120
Height from floor to the axis of chimney pot
(mm) 690-lateral 430-rear 690-lateral 430-rear
Boiler volume (l) 5.5 5.5
Mass of the product 130 160
Heating volume 120-unisolated
150 isolated 120-unisolated
150 isolated
PURPOSE
Permanent burning solid fuel floor heating stove is used for heating the
apartments and individual houses. It is mainly installed as a floor heating stove,
but it can also be installed for central heating.
Special characteristics of these ranges-stoves is incorporated pipe snake (copper
pipe) which, when connected to thermal valve (Figures 3 and 3a, Item 13) serves
as thermal safety device in case of possible overheating the stove – furnace.
Installation of thermal valve in closed central heating system is COMPULSORY.
In open central heating system, installation of thermal valve is not compulsory. In
order to ensure satisfactory operation of the stove, the user must observe all the
requirements from this manual.
Thermal valve is not delivered with stove

Figure 2
1) Firebox door
2) Cook-stove lid
3) Ash pan door
4) Oven door
5) Protective cover of cleaning opening
6) Fuel drawer
7) Flue gas connector

MOUNTING TO THE CHIMNEY
Unpack the cook-stove, examine it and familiarize with cook-stove parts and
accessories, especially paying attention to the following:
-Door should be properly sealed, as well as lid on heating plate, so as to
prevent uncontrolled inlet of air into the cook-stove.
-Power controller, with the use of control button (Figure 5, Item 1), should
correctly open and close controller flap.
-Chimney connector should be properly sealed with asbestos band, during
moving sideways or backwards, depending on the position in relation to
the chimney.
The cook-stove achieves its nominal heating value if the draught in chimney is 10
or 12 Pa, depending on the stove type.
We recommend the following chimney sizes to achieve this draught:
COOK-STOVE
DESIGNATION CHIMNEY HEIGHT
6 7 8 9
DIMENSIONS OF LIGHT AREA
ALFA 70E 140X140 Ø120 Ø120 Ø120
ALFA 90HE 140X140 140X140 Ø120 Ø120
SPECIAL NOTES
1) Connector should be fitted to the chimney in rising manner;
2) Chimney pot, flue pipes and chimney must not get narrowed;
3) All the joints, as well as the chimney, must be properly sealed, without soot
and dirt in flue ways
Proper chimney and fulfillment of other requirements enable seamless
functioning of the cook-stove.
Cook-stove can be installed in kitchen block or some other suitable place,
thereby taking care that the stove is positioned on incombustible support. If the
support is parquet, special sheet metal plate shall be positioned on top of it in
order to prevent damage of fire due to careless use.
INSTALLATION OF THE STOVE IN WATER HEATING SYSTEM
Stove is primarily intended for floor heating with hot water, but can also be
installed as a central heating system according to the regulations for this case in
compliance with JUS.M.E7.201 and JUS.M.E7.202. For water supply and
discharge from the floor (central) heating system, a connection is planned on the
boiler, with R1 diameter, and for cooling water supply, with diameter R ½
(thermal valve connection). In the following paragraphs, installation diagram of
the stove will be given in floor heating system.
IMPORTANT!
Stove installation shall be carried out by an expert according to the appropriate
design. Stove is constructed so as to enable connection to closed or open
heating system. All the connections must be properly sealed and tightened.
Before putting into operation, the whole installation should be tested with water
under pressure of 2.4 bars.

OPEN SYSTEM INSTALLATION DIAGRAM
Figure 3
1) Boiler
2) Flue gas connector
3) Distribution line
4) Open expansion vessel
5) Exhaust pipe
6) Radiator valve
7) Radiator
8) Air vent valve
9) Circulation pump
10)Return flow
11)Charge and discharge cock
12)Control valve
13)Thermal valve
14)Connection line for water supply system
15)Hot water discharge
16)Pressure gauge

CLOSED SYSTEM INSTALLATION DIAGRAM
Figure 3a
1) Boiler
2) Flue gas connector
3) Distribution line
4) Expansion vessel
5) Safety valve
6) Radiator valve
7) Radiator
8) Air vent valve
9) Circulation pump
10)Return flow
11)Charge and discharge cock
12)Control valve
13)Thermal valve
14)Connection line for eater supply system
15)Hot water discharge
16)Pressure gauge
PUTTING INTO OPERATION AND FIRING
Before lighting and firing, the whole system of floor (central) heating should be
filled with water and properly air vented, while the stove has to be properly
connected to the chimney.
When the system is cold, power controller flap located at the rear of the stove
should be opened. Butterfly for kindling, located on the plate, should be set in
position “0”. Later on, when the stove is satisfactorily fired, controller flap will be
placed in appropriate position depending on chimney draft and desired heating
output, while the kindling butterfly on the plate should be placed in “Z” position.

The stove is fired like all permanent combustion solid fuel stoves. On the grate,
paper and finely chopped wood are placed and kindled. When all this is
satisfactorily fired, the stove shall be charged with wood or coal, and after half an
hour power control should be set at appropriate temperature. Stove charged in
such a manner will burn from 1 to 6 hours, depending on burning intensity in the
stove and temperature controller setting. It is not recommendable to put organic
waste (plastic bags, bones and like) into the stove because in such case the tar
is accumulated on flue way walls which can cause fire. .
After each charging, it is recommended to leave the stove burning for at least half
an hour at highest power because in the beginning all evaporable fuel ingredients
will be burnt, which is the main cause of condensate formation in the stove.
USE OF GRATE IN UPPER POSITION
For cooking, baking and heating in transitional periods, upper grate position is
used (Figure 4, Item 1) so as to enable the flame to directly reach the plate and
thus save expenses of cooking, baking and heating.
Stove will be delivered with grate located in lower position. To move the grate
from lower to upper position, you shall do the following:
-Remove the pin (Figure 4, Item 4) which links air supply sheet metal with
grate support (Figure 4, Item 2);
-Pull out air supply sheet metal (Figure 4, Item 3) from firebox
compartment;
-Push the grate completely backwards and lift the grate upwards through
the ash compartment and pull it out from its location. Then lift and pull out
the grate support (Figure 4, Item 2);
-Shaking arm is positioned in corresponding slot on the front, and the grate
is slightly lifted upwards through ash compartment so that grate tooth fits
into the opening on the shaking arm;
-Placing the grate in upper position is carried out in reverse order
1) Grate
2) Grate support
3) Air supply sheet metal
4) Pin

AUTOMATIC REGULATION
Stove heating output is adjusted with output controller which automatically
adjusts the moving of controller flap away, depending on the adjustment of
control button (Figure 5, Item 1) and the height of water temperature.
Controller button has several positions designated on the stove frame, as follows:
Position of controller button 0 3 4 5 7 9
Water temperature in the stove Closed controller 30 40 50 70 90
Figure 5
1. Controller button
2. Special key or screwdriver
Air cover (flap) in the output controller system completely controls combustion air
supply if other openings are closed.
SECONDARY AIR
Secondary air control is shown in Figure 6. Secondary air is adjusted with rod on
the inner side of firebox door. On the inner side of firebox door there is a clear
designation 0 – 1. If the rod is moved in the direction of 0, secondary air volume
is decreased, while it is increased in the direction 1.
Figure 6
HEATING FLAP
Heating flap is moved when button (Figure 7) located above the oven door is
actuated. When this button is not pressed heating flap is open. When the button
is not pressed, heating flap is closed. This button is used to shorten the ways of
flue gases during firing. Heating flap should be opened only in the stage of
lighting the stove. When the stove is satisfactorily fired, after 15 – 20 minutes, the

heating flap should be closed. If the flap is not closed, baking in the stove is
hindered, water heating in the boiler is weaker and fuel consumption increases.
Figure 7
COOKING, BAKING AND FRYING
During heating season, the stove is primarily used for heating. For that purpose,
the grate is placed in lower position. For quicker baking, cooking and frying, wood
should be fired.
Kindling butterfly must be closed and heating output control opened. Upon
completed baking, cooking and frying, hating output control has to be set in
desired position.
FIRE DOOR HANDLE
In case that firebox door handle gets too hot, door closing and opening is only
possible with a special key from the existing accessories (Figure 8).
Figure 8
CLEANING AND MAINTENANCE
Each time before the stove is charged with fuel, stove grate must be cleaned with
a spade through ember holder. As pan shall be emptied once a day and larger
residues (slag) shall be removed by opening the ash pan ember holder door. All
stove surfaces being in contact with flue gases shall be regularly maintained and
cleaned with a cleaning spade and brush. Clean heating surfaces guarantee
economy operation of the stove. Cleaning of the stove is recommended once a
month or more often if needed.

Enameled surfaces of the stove and stove frame shall be cleaned with wet cloth
with the use of fine detergents. Stove plate shall be periodically cleaned with fine
sandpaper, and in case of longer pause, coated with vegetable oil. Any kind of
waste shall not be thrown into the stove out of firing period.
It is forbidden to cool the stove with artificial draught and wet the firebox with
water.
CLEANING OPENING
Behind the protective cover of cleaning opening, there is a cover (Figure 9). It is
fixed on the stove front with one butterfly screw and must be removed in order to
clean the stove. Before it is again fixed with screws, sealing braid located at the
cover should be checked for good sealing and, if needed, replaced.
Figure 9
PRESERVING THE STOVE
Upon completion of firing period, the stove should be cleaned from ashes and
soot. Water shall be discharged only if some repair is needed to be carried out on
the facility. If the facility is not used in heating season, facility should be filled with
a certain quantity of some anti-freezing liquid or water should be discharged from
the facility in order to prevent freezing.
HOT WATER PREPARATION
In the stove type “KVŠ-90E”, add-in water boiler is incorporated which is used for
hot water preparation.
TIME OF GUARANTEED SERVICING
This implies the period during which we guarantee the service, accessories and
space parts, starting from the day of purchase of the device.
The time of guaranteed servicing is in accordance with the valid legal regulations.
In case of change of the model and the design of the device, the term for change
of parts that have modified design is within the legal term.
After this term we provide the modified parts in the new designs.

CONDITIONS OF THE GUARANTEE
The guarantee of the product is valid within the legally defined term.
The guarantee is not valid for the glass, the glass-ceramic panel and the physical
damages that have occurred after purchase.
THE MANUFACTURER RETAINS ALL THE RIGHTS TO MAKE CHANGES.
The device will properly function within the guaranteed term only if it is used in
accordance with these guidelines for connection and application.
The guarantee cases to apply if it is determined that:
-the connection or the repair of the product was performed by an unauthorized
person, that is, if unoriginal parts have been embedded,
- if the device has not been properly used in accordance with these guidelines,
- if some mechanical damaging of the device occurred during usage,
- if the repairs of defects were performed by an unauthorized person,
- if the device has been used for commercial purposes,
- if the damage has occurred during transportation after the device was sold,
- if the defects occurred due to improper mounting, improper maintenance or
mechanical damaging by the buyer,
- if the defect occurred after too strong or insufficient power, as well due to force
major.
We can repair the defects of Your device also outside the guaranteed period,
with original spare parts for which we also provide a guarantee under the same
conditions.
This guarantee does not exclude or affect the rights of the customer in regard to
the conformity of the goods pursuant to the legal regulations. If the delivered
product does not conform to the agreement, the customer has the right to ask the
seller to repair that lack of conformity without any reimbursement, by repair or
change of the product in accordance with the valid legal regulations.