Kalvis 6 MPP, User Manual

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KALVIS – 6MPP      2009.05.18 

When boiler is mounted outside the territory of Lithuania, mountign and 

installation should proceed according to relevant national regulations. 

Error Reason 

Solution 

Boiler overheats 

Too intense combustion.  
Power outage (for systems 
with enforced circulation) 

Close air supply. Monitor boiler 
temperature. 
When temperature drops return to 
regular combusiton mode. 

Power outage 

Call serviceman.  
In case of a risk of system freezing, 
during prolonged power outage, drain 
water from the boiler 

Boiler does not reach 
nominal output 

Humid fuel. 
Insufficient draught. 

Use dry fuel. 
Check chimney draught, clean the 
chimney. 

Boiler „weeps“ 

Bad fuel. 
Too low return water 
tmeperature 
(>57

°

C !). 

Use dry fuel. 
Adjust mixing valve. 

Too high pressure 

Boiler overheats. Protection 
valve malfunctions. 

Close air supply, monitor water 
temperature.  
Check and replace protection valve. 

4.1 Fire precautions: 

*

Boiler should be placed on an incombustible material; 

*

If boiler is connected to the chimney by metal pipes, pipes should not be 
thinner than 1,5mm and they have to be covered by thermal insulation 

Attention !

When chimney’s draught is too great and sawdust is used for fuel sparks 

may fly out through the chimney. 

It is prohibited to use sawdust for fuel, if the distance between chimney 

and flammable roof or other flammable structures is less than 20 m.  

4.2. Requirements for chimney:  

Chimney design and boiler connections into it are shown on the fig 3a, 

3b and  and 3c. 

6.

Safety precautions 

3a fig. 

Boiler to chimney connection. 

* not less than 60

°

     A - incorrect     B – correct 

3b fig.  

Chimney insert installation 

Prohibited: 

•

Disassemble boiler or electric installation; 

•

Connect boiler to the system without protection valve, that keeps 
pressure in the system below 0,15MPa (1,5 kgf/cm

2

); 

•

Close hot or return water valves when boiler is operated; 

•

Store dry fuels or other combustible materials close to or on top of the 
boiler; 

•

Store fuel closer than 500 mm to boiler; 

•

Ignition fuel with combustible liquids (petroleum, kerosene etc.); 

•

Operate boiler with doors and covers open; 

•

Open burner while boiler is operated; 

•

Allow children to be by the working boiler without adult supervision; 

•

Operate boiler without having it grounded; 

•

Rapidly open loading doors during combustion (open a little, wait, then 
slowly open wide); 

•

Operate boiler with tank cover opened or non hermetic pellet supply 
hose; 

•

Clean or service boiler when electric power is on. 

7.

Consumables 

Fire grate and cast iron door may burn up, especially if user combusts 

coal, serivicing door and servicing cover fiber gasket may wear out.