Lighting; Stoking The Furnace; Continuing Heating; Maintenance And Repairs - Helo R20 Manuel D'installation Et D'utilisation

3.4. Lighting

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Set the first batch of wood loosely into the furnace. (Maximum amount, refer to Table 2)
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Add kindlings between the logs and light them.
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You can keep the fire door open for a moment while the logs start to burn.

3.5. Stoking the furnace

Add the actual heating batch when the fire has nearly burned down to embers. (Maximum amount, refer to Table 2).
Add the wood lengthwise, similarly to the grate openings. Close the fire door.
Sauna is normally ready for bathing in 40 to 50 minutes, and it is not necessary to add more wood for one sauna bath.

3.6. Continuing heating

If the bathing session is longer, the conditions are cold etc., another batch of wood may be necessary for prolonged
heating. Once the first batch has burned down to embers, add more wood into the furnace parallel to the grate. (Maximum
amount, refer to Table 2)

4. Maintenance and repairs

4.1. Cleaning the heater

The surface of the heater may be cleaned with mild detergent and moist, soft cloth.
Clean the fire door glass with a soot cleaner agent (e.g. Noki Pois) available from hardware stores.
4.2. Removing the ashes
Excess ash will shorten the grate's life cycle and weaken burning. Remove only cold ash before starting the next heating, to
a metal bucket or similar to avoid risk of fire. Open the door to pull out the ash pan for emptying.

4.3. Chimney sweeping

The opening in the stone compartment is a soot hatch (covered with a cap).
The inner parts of the heater are cleaned through the soot hatch 2 to 6 times a year according to use.
For this, you need to empty the stone compartment. You can take the opportunity to check the condition of the stones. The
soot hatch will open by tapping the cap sideways.
If the cap has stuck because of temperature fluctuation, use a bending iron or a hammer.

4.4. Cleaning the heater glass

Handle the glass door carefully. Do not bang the door shut or use it for pushing wood into the furnace. Clean the glass with
Noki Pois or similar soot cleaning agent.

4.5. Changing broken glass

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Remove the door as instructed in section 2.9.
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Remove all pieces of broken glass.
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Straighten the tabs at the corners and remove the four (4) locking springs inside the mouldings.
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Push the glass into the upper moulding and insert it into the lower moulding by sliding the glass. Adjust the glass to the
centre.
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Push the locking springs in at the ends of the mouldings, and bend the tabs against the glass.
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Attach the door to the heater.

5. Troubleshooting

If the heater or the sauna doesn't perform as you think they should, check according to the list below. Make sure you have
selected the correct heater to match the sauna room's properties. Our website has instructions for selecting a suitable
heater: www.helo.fi
The heater is too hot (red-hot)
The draft exceeds -12Pa
- lower the draft with the damper
The stones are laid too tightly or they are too small.
- place the stones more loosely and use stones that are min 10 cm in diameter.
There's too much wood, or the pieces are too small.
- Table 2 has the maximum amounts of wood for the heater, do not use more.
- Do not burn large amounts of small pieces of wood, because their temporary heating effect is high.
- Let the previous batch of wood become embers before adding the next batch.
There's smoke in the sauna room, the draft is bad.
Turn off all equipment that may cause low pressure.
Is the damper open?
Is the connection pipe sealed against the heater and the flue?
Is the alternative flue opening sealed with the included cover?
Are the heater's soot hatches securely shut?
Is there ash in the heater channels?
Is the interconnecting pipe from the heater to the flue free from ash?
Is the flue completely open? Is it unswept, filled with snow, covered with winter cover etc.
Is the chimney in good condition? Cracks, weathering.
Is the draft height (chimney height) sufficient to the surrounding environment?
- If there are trees close by, a steep hill etc., the chimney needs to be over 3.5 m measured from the floor.
Is the flue size correct?
- A minimum of ½ a brick chimney or, depending on the heater model, either a 115 mm or 130 mm round flue.
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