Kalvis 4 - Boiler Operation; System Preparation for Heating

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KALVIS-4 (N) EN 2019.01.14
6. Boiler operation
Hot-plate with rings; door external surface; flue pipe and other surfaces of
the boiler not covered with thermal insulation panels during operation get
hot dangerously – don’t touch them.
Recommended fuel moisture is no more than 25 %.
When stoking a boiler with a damp fuel (wood or sawdust), condensation
combines with combustion products resulting in acids, which shorten the life
of the boiler for several times.
When stoking with damp fuel, the specified performance efficiency cannot
be reached so much more firewood is consumed.
User at his own discretion can use other solid fuel, without making
claims to the manufacturer for poor performance.
In order to avoid smoke getting into the room, combustion chamber door
and loading door has to be closed, except the cases when the boiler is
started or refuelled. Boiling holes have to be covered with rims or the heated
vessel.
Never use mechanical exhausters in the room where boiler is operated.
Only natural draft system can be used there.
During boiler operation, large air volume has to be supplied to the room
for combustion support, so it is strongly prohibited to close incoming air
holes with grilles or valves.
If in the room with operating boiler there are more air-consuming units, air
supply to the room has to be sufficient for all the units.
Don’t cover or put anything on air supply valve grate.
When boiler is fired, put pots or other kitchenware on boiling holes
covered with rims or instead of the rims. This will help to avoid damage to
the boiler body top part paint layer.
6.1. System preparation for heating
Before firing the boiler make sure that:
• The system is fully filled with technical water and deaerated;
• Valves disconnecting the boiler from system are open;
• Heating system circulation pumps are operating;
• Protective valve is operating (check by turning).