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x

  Then place a few logs crosswise on the previous ones. 

x

  Close the door and leave the ash compartment door open by about 3 cm (1 1/8”). 

 

Once these latest logs have burned some five minutes, straighten them into the grate direction 
and fill the fire compartment lengthwise with solid split logs. Close the door and leave the ash 
door open by 3 cm (1 1/8”) for a short while. 
After this, slow down the burning by closing the ash door gap to 0.5–2 cm (1/4”-3/4”). During this 
heating phase, the fire compartment walls should only heat up for a while to a red glow in their 
upper parts. Usually, this will prepare the sauna for your bath in about 40–50 minutes, and you 
should not need to add firewood during your stay. 

3.3.2. A sauna bath on just one load of wood, lighting from above 

Lighting from above is a departure from tradition. With this method, stove and stones heat up 
slightly more slowly than with the usual way, but once you have found a good combination of 
stove and chimney adjustments, the difference is not very big. 
 
Lighting from above is more ecological, causes fewer emissions and raises more heat energy 
from the firewood. As a result, you can bathe on less wood for a longer time. 
 

x

  Check that the chimney valve is wide open. 

x

  Use dry wood that has preferably been indoors for a day. 

x

  Fill the fire compartment with firewood up to the door’s upper edge. 

x

  Place ignition helpers on top, e.g. small sticks and a piece of bark. 

x

  Light the ignition helpers from the top. 

x

  Close the door and leave the ash compartment door open by 3 cm (1 1/8”). 

x

  Once the fire has burned for 5–10 minutes, the burning can be adjusted by closing the 

ash door to 0.5–2 cm (1/4”-3/4”). Restrict excessive draught with the chimney valve, if 
necessary. 

 
During this heating phase, the fire compartment walls should only heat up for a while to a red 
glow in their upper parts. Usually, this will prepare the sauna for your bath in about 50–60 
minutes, and you should not need to add firewood during your stay. 

3.3.3

.

 Continuing the heating with a second load 

Depending on how much you bathe, frost outside etc., you may need to continue the heating with 
a second load. 
Once the first load has turned to embers (in about 40–60 minutes, if the draft is right), place 
sturdy logs lengthwise in the fire compartment. If you are not going into the sauna immediately 
after adding the wood, leave the ash door gaping by a few millimetres. Now the fire should 
remain just right for a long time. When you do go into the sauna, you can add a few logs, if 
necessary. 

4. Maintenance 

4.1. Cleaning the stove 

The stove’s surface can be cleaned with a mild cleaning fluid detergent solution by wiping down 
with a soft, moist rag. 

4.2. Ash removal 

Excessive ash shortens the grate’s lifespan and weakens the burning. Remove the ash while it is 
cold, always before the next heating, using a metal container to avoid a fire hazard. 

4211-61  Kastor KS

 

11 

3/25/11

 

Rev. 1 

Summary of Contents for KS-20

Page 1: ...KASTOR KS KS 20 KS 20V KS 27V 4211 61 Kastor KS 1 3 25 11 Rev 1...

Page 2: ...6 2 5 Connecting the stove to a brick chimney and instructions for JK stoves 7 2 6 Connecting to a Kastor chimney 8 2 7 The stove door and changing the opening direction 9 2 8 Air guide plate 9 2 9 G...

Page 3: ...m reliable suppliers we have gathered over the years The steel is Finnish structural steel from Ruukki which can be bent into various solutions while retaining its hardness due to its uniform quality...

Page 4: ...existing chimney connection or installation route of any new chimney pipe o Floor material flammable non flammable tiled and waterproofed 2 Installation and preparation for use 2 1 Preparing for use...

Page 5: ...upright positions Picture 2 2 The maximum stone capacity is about 60kg 132 lbs By adjusting stone size amount and adding other types of stone you can balance the steam consistency to suit the sauna an...

Page 6: ...surface If the flue pipe starts off from the top of the stove with a non insulated connection pipe the required safety distance is 1 000 mm 40 in all directions and 1 200 mm 48 above The safe distanc...

Page 7: ...ere is a flammable floor in the room with the door the area requiring protection must extend 100mm 4 beyond both sides of the door and at least 400mm 16 in front of it The protective layer should be a...

Page 8: ...ls the other opening is the sweeping hole which must not be used for the pipe The bent pipe is then attached to the stove s own connection pipe Saw the bent pipe and any extension pipe down to a suita...

Page 9: ...se damaged it must be replaced Replacing the air guide plate Remove the grate Install the air guide plate in the fire compartments back so that its support part is on the grate support Check the plate...

Page 10: ...the flames rage with great strength towards the stove s upper part x The sauna and or stones do not heat up properly in less than an hour although the stove has the correct size When you light the fi...

Page 11: ...er edge x Place ignition helpers on top e g small sticks and a piece of bark x Light the ignition helpers from the top x Close the door and leave the ash compartment door open by 3 cm 1 1 8 x Once the...

Page 12: ...pages at www kastor fi wood burning select your stove Smoke leaks into the sauna bad draft Is the chimney valve open Is the connecting pipe attached tightly both to the stove and the chimney There mu...

Page 13: ...he stones packed too tight The stones need to be stacked in such a way that there is enough air between them See chapter 2 2 Are the stones good quality and the correct size Suitable stones are perido...

Page 14: ...60300 e mail info helo fi Technical Support For troubleshooting or service questions call 1 888 780 4427 and ask to speak with tech support Prior to calling please have the Model number available You...

Page 15: ...ectional view of the stove s stone compartment 10 2 3 Picture Installation of Kastor stove using a protective stove base 1 Concrete floor or tiled waterproofed floor 2 Protective stove base 3 Wooden f...

Page 16: ...al distance from stove 1000mm 40 if no protectors 3 Platform 30mm 1 4 1mm 1 16 thick metal sheet or 7mm 5 16 of fiber reinforced board 5 Stainless steel attachment screw 2 5 1 Picture 2 5 2 Picture Co...

Page 17: ...Connecting to a Kastor chimney Measurements in millimeters 1 Chimney valve device 4211 61 Kastor KS 17 3 25 11 Rev 1 2 8 1 Picture 2 8 2 Picture 1 Air guide plate 1 Air Guide plate 2 Grate 2 Grate 3 G...

Page 18: ...cting to combustible material from connecting pipe surface to the side 1000mm 40 upwards 1200mm 48 B The stove s distance from combustible material to the side and backwards 500mm 20 C The stove off t...

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