Bedienungsanleitung Haas-Sohn NIVALA (Seite 8 von 13) (Englisch)

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Wrong position of the fuel inside Not

enough fuel to set fire

Add more logs, see 5.2.

Setting the fire

Primary air supply inlet is closed Open the primary air regulator or turn down the secondary air

regulator, respectively

The exchanger cools the hearth too

long.

Provide the exchanger output with a pump switching

thermostat; preset the temperature approx. 55 °C. Switch

some appliances (heating bodies) off. Install a

thermoregulation valve, e.g. ESBE

Inadequate requirement on the heat

capacity (performance of the

fireplace stove is too low)

Contact the specialist Reduce the heat loss (for example,

provide better heat insulation)

Smoke flues and fireplace stove are

dirty

See 6.1.

Cleaning

Chimney effect is too low See 4.

INSTALLATION AND CONNECTION TO THE

CHIMNEY

Impossible to heat up the fireplace stove within

expected time

Fireplace stove is not operated

correctly

Heating device adjustment is not optimal, see 2.1.

Fuel

quantity and firing process adjustments

Fireplace stove is not operated

correctly

Heating device adjustment is not optimal, see 2.1. Fuel

quantity and firing process adjustments

Ashpan door not closed properly Shut the door

Door or ashpan sealing is

damaged

Replace the door sealing

Excessive

performance of

the fireplace

stove

Excessive chimney effect See 4.

INSTALLATION AND CONNECTION TO THE

CHIMNEY

Chimney effect is too low See 4.

INSTALLATION AND CONNECTION TO THE

CHIMNEY

The fireplace

stove

produces

odour and

smoke

Protective paint is being hardened, or

the fireplace stove is dirty, dusty

Allow the paint hardening process finish – the smoke and

odour will disappear in a short time / while cold, clean the

device outside

Sometimes is difficult to find the

reason but, usually one of the

following is found: wrong type of

fuel, wrong adjustment of the firing

process, weak or temporarily weak

chimney effect, door sealing loosen

Rule: Clean the door from time to time (depends on the type

of the fuel used), see 5.4. . If coal cakes are used, the door

needs cleaning more often than with wood

Chimney effect is too low See 4.

INSTALLATION AND CONNECTION TO THE

CHIMNEY

Too much fuel in the firing area Only load correct quantity, see 2.1.

Fuel quantity and firing

process adjustments and 5.3.

Feeding the fire

Window is getting dirty

Wet fuel was loaded. Use only well-dried fuel, see 2.2.

Fuel

Heat processing surfaces of the

exchanger are clogged

Clean them – use the brush

The fireplace stove is not operated at

sufficient performance , economic

operation is preset (air regulators are

half-closed)

Allow higher performance – open the air regulators

The exchanger

performance is

insufficient

The water pressure in the system is

not sufficient (not enough water)

Check the water pressure (water volume) and re-pressurise

the system (refill the water)

Heating

system is

overheated

The consumption of the heat

produced by the heating system is

low

Check the appliances (check the radiators – they should be

open), check the pump for correct function. Contact the

specialist company.

8. FREQUENT PROBLEMS AND QUESTIONS

8.1. Cracked (released) fireclay (vermiculite) brick in the burning area

It is emphasised that cracked fireclay bricks do not lose their function unless they have

fallen out, so there is no reason to replace them while cracked only. In case of replace

needed, order the components at your sales representative or manufacturer’s address.

Please specify the type and the serial number and the fireclay ID number (see the

Technical Card).

Procedure

If you need to replace the side bricks, remove the upper partition or remove the

fireclay holders and take the damaged brick away. Sometimes, you need to remove the

cast grate with bricks at the bottom. For the installation, use the same procedure (reverse).

Make sure you place the components back in exact positions (follow the Technical Card).

Caution! Do not put the fireplace stove in operation if (even a part) of the lining within the

burning area falls out. There is danger of burning the construction through.

8.2. Broken glass

The door glass is made of special glass-ceramic material, characteristic with top heat

resistance. Do not use standard window glass!

Procedure There is no need to dismount the whole door. You should only unscrew the

holders and remove the glass then easily. When you install the new piece, make sure the

new glass is seated evenly. The contact surface between the glass and the door must be

provided with a sealing tape. Do not replace the sealing tape if it is in good condition.

Tighten the glass holders back slowly and carefully to avoid cracking the new glass by

excessive tension.

Caution! Some types of the fireplace stove are not provided with the sealing tape along the

whole perimeter.

8.3. Partitions to control the chimney effect

To clean the fireplace stove or replace fireclay (vermiculite) bricks, first remove the

movable partitions (if installed, see Technical Card). This way, you make you way to the

cleaning or replacement job. Keep in mind that some types of the partitions are designed

for holding the bricks at the position as well. Make sure you do not tilt them or let them fall

out and break. Install them back in their original positions.

Disassembly Lift the movable partition on one side a bit – this way, the other end is

lowered. Move the partition aside to allow taking it out of the device.

Assembly: Use the same procedure (reverse order). Insert the partition into the device and

find the previous position. Check the final position with the Technical Card!

8.4. Cracked side tile

During transport, operation or for other reasons, tiles designed for the fireplace stove lining

may be damaged. The tiles (or metal panels) are stuck in the lining by pressure from

special springs.

Disassembly Knock on the tile slightly (use the palm of your hand) to move it to the edge

(right or left). Make sure the tile does not fall down or cracks by the tension from the spring

released. Start the disassembly from the tile in the middle or from the tile leaned against

the lining from two sides.

Assembly: Start with the bottom or upper tile. Insert the tile in its original position (from the

right or left), then get through the power produced by the spring. To do so, the best way is

to hold the tile with both hands, push it to get in contact with the edge of the fireplace stove

and, after that, knocking on the tile with you palm (gently!), move it in its correct position.

(Sometimes you need to produce a bit more than gentle knocking). Make sure the tile is

positioned properly – the same overlap on both sides. The tile to be seated in the middle is

installed the last.

16 17

Haas-Sohn NIVALA Seite 8

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