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For a system to which only the “Alfa term 27” stove is connected, we recommend an expansion vessel of 25 (l) and 
not more than 18 (l), which should be fitted on the return pipe, as close to the boiler as possible, and no block valves 
can be fitted between the boiler and expansion vessel. 

In order to reduce the risk of condensation, it is recommended to use a three-way mixing valve with a fitting thermostat 

when installing the solid fuel. 

We  recommend  that  you  do  not  adjust  the  water  temperature  below  57  ºC  due  to  possible  condensation  of  the  boiler, 

neither above 75ºC. 

 

Scheme of the hydraulic installation of a solid fuel

 

(radiator heating) 

 

 

 Scheme of the hydraulic installation of a solid fuel (radiator and floor heating) 

 

 

 
 

 

Legend: 
1. 

Solid fuel

 

2. Auto Air Vent 

 

3. 

Safety valve

 3 bar 

4. 

Non-return valve

 

5. 

Circulation pump

 

6. 

Closed  expansion 

vessel

 7. Contact thermostat 

 

Note: 
- It is mandatory to install a thermal discharge valve with thermal 

protection,  the  so-called  thermal  fuse  in  accordance  with  the 
recommendations from the technical instructions. 

-  Install  the  safety  valve  directly  on  the  boiler,  at  the  connection 

provided, which is described in the instructions.

 

Legend: 
1. 

Solid fuel

 

2. 

Auto Air Vent

 

3. 

Safety valve

 3 bar 

4. 

Hydraulic crossover

 

5. 

Circulation pump

 

6. 

Non-return valve

 

7. 

Circulation pump

 

8. 

Closed expansion vessel

 

9.

 

Three-way mixing valve with 

 fitting thermostat

 

 

10. 

Circulation pump

  

11. 

Underfloor heating separator

 

12. Contact thermostat

 

Note:  -  It  is  mandatory  to  install  a  thermal  discharge  valve  with 

thermal protection, the so-called. thermal fuse in accordance with the 
recommendations from the technical instructions. 

-  If  only  underfloor  heating  is  connected  to  the  stove,  be  sure  to 

install a storage tank (BUFFER) 

-  Install  the  safety  valve  directly  on  the  boiler,  at  the  connection 

provided, which is described in the instructions.

 

Summary of Contents for ALFA TERM -27

Page 1: ...ALFA TERM 27 This product meets the requirements of the Ecodesign Directive in terms of efficiency and air pollution level in order to contribute to the reduction of energy consumption and negative en...

Page 2: ...eating power is shown for stoking dry beech wood with lower heating power Hd 4255W kg DEAR BUYERS Thank You for the trust you showed us buying our stove for floor heating We assure You that You have c...

Page 3: ...2 1 THERMAL VALVE WITH BUILT IN THERMAL PROTECTION Fig 7 Item 13 and Fig 7a 7 7 2 2 SLOPE PRESSURE REGULATOR 1 2 WITH MANOMETER Fig 7 Item 19 and Fig 7b 8 7 2 3 WATER FILTER OF THE BOILER INTAKE Fig...

Page 4: ...CKAGING MAY CAUSE SUFFOCATION THESE INCLUDE PLASTIC BAGS FILMS STYROFOAM ETC 2 3 THE RESPONSIBILITY OF THE INSTALLER The responsibility of the installer is to perform all the checkups of the flue pipi...

Page 5: ...Secondary air regulator knob 19 Ash pan door 10 Thermostat combustion regulator knob 12 Ash pan ash box 13 Grate holder 14 Wood box 15 Cleaning access plate 16 Pressure gauge 17 Thermometer 18 Cooktop...

Page 6: ...inet is mounted above the stove minimum clearance between the stove s cooktop and the cabinet should be at least 40 cm Combustible materials e g wallpapers door casings doors etc require a clearance t...

Page 7: ...box and screw it on the outlet on the cooktop or on the side outlet First remove the cover and use the same screws to fasten the collar NOTE If your chimney is of unsatisfactory or dubious quality we...

Page 8: ...is built on the outside walls it must be well insulated If the chimney connection is tightly connected to the chimney if the connection is extended If it is properly cleaned and free of birds nests di...

Page 9: ...ney pipes that have a rectangular internal cross section with a ratio that differs from the plan Modest efficiency 40 Chimney positioning and distance 7 INSTALLING THE STOVE IN THE WATER HEATING SYSTE...

Page 10: ...ssure regulator with manometer 1 2 the same or similar as shown in Fig 7b and Fig 7 Item 19 3 Filter for cold water at the input of the water supply to the thermal valve Fig 7 Item 20 4 Filter for hot...

Page 11: ...the hot boiling water from dirt and solid objects that can damage the tap seals or seals of the thermal valve This filter must be resistant to water temperatures up to 150 C NOTES After the completio...

Page 12: ...losed expansion vessel 7 Contact thermostat Note It is mandatory to install a thermal discharge valve with thermal protection the so called thermal fuse in accordance with the recommendations from the...

Page 13: ...ected to the chimney as described in the foregoing items NOTE The stove may not be used without water It must be connected to the system which is connected to consumers radiators with the power of no...

Page 14: ...d using the thermostat power regulator combustion regulator which is located in the ash pan door and which automatically sets the regulator damper depending on the regulation knob setting Fig 1 Items...

Page 15: ...odors the next time you heat the oven Clean the cooktop occasionally using fine sandpaper and in the event of longer breaks apply acid free oil on the cooktop vegetable oil Remove burnt material from...

Page 16: ...t If water is leaking from the valve replace the expansion vessel If only air comes out from the valve remove the installation vessel and pump it The pressure in the vessel must be equal to or greater...

Page 17: ...small number of radiators are switched on Transfer the grate to upper position or switch on some other radiator Keep the ashtray door closed 14 Water condensate in the boiler Damp heating material Cha...

Page 18: ...ate of undesirable objects 18 Outline dimensions of ALFA TERM 27 stove Figure 16 19 DETERMINING THE REQUIRED HEAT OUTPUT There is no absolute rule that would allow the calculation of the required heat...

Page 19: ...eating close the air inlet covers and DO NOT open the fireplace door Extinguish the fire with appropriate means home fire extinguisher NEVER USE WATER TO EXTINGUISH THE FIRE Also notify local firefigh...

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