Harman Stove Company SF-150 SF-250 Installation And Operator's Manual

Also see for SF 250: Installation & operating manual

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Harman Stove Company SF-150 SF-250 Installation And Operator's Manual Manual pdf 13 page image

12One-eighth to 1/4" accumulationon interior parts is normal. Themost important area is between thepipes indicated by the arrow inFigure 6. Under normal operation itis not necessary to clean the cham-ber. Excessive accumulation willonly occur when wood is burnedvery slowly for long periods of time.If this is the case, we recommendyou clean the chamber and burn thestove hotter. If the extra heat fromthe hotter fire is too much for yourhome, switching to coal, in thewarmer months may be the answer.We recommend you check yourinterior spiral chamber once a year.11.1 Starting a Wood FireTake about eight sheets of newspa-per, crumble up into balls and placeon top of grates on dual fuel modelsand on the firebrick in the woodmodels. Next, lay some fine kindlingon top of the paper. This kindlingmust be dry and no larger than 3/4"diameter and should be layered in acriss-cross pattern to allow good airflow. Then, lay some slightly largerpieces (2" diameter) of wood on topof the kindling. Open draft controlsfully and light the paper at the bot-tom just inside the door. Now, closeloading door (also ash removal dooron dual-fuel models) and allow kin-dling and wood to catch fire. Afterabout five minutes, open loadingdoor an inch or two for a few sec-onds before opening completely.This method will allow the smoke toclear away from the door opening.Now the fire should be well-estab-lished and ready for some largerwood. Add four or five pieces of 3"to 4" diameter wood. Close doorand let burn for about 5-10 minutes.Now open loading door using thesame method as before and loadstove with wood to the desired full-ness. All Harman wood and dual fuelstoves may be loaded with wood asfull as possible for high output andlong burn time. Then close the doorand allow all the wood to catch fire .After all the wood is burning well,you may reduce the air entering thef i rebox by turning the draft contro l sclockwise.WARNING! DO NOT CLOSEBOTH DRAFT CONTROLS ONLOADING DOOR AT ONCE ANDTHEN OPEN THE DOOR, ASTHIS WILL CAUSE AN EXPLO-SION OF THE UNBURNEDGASES IN THE FIREBOX!Close and open the draft controlsone at a time to the desired setting.This setting should normally bebetween one and two turns. Lessthan one turn will cause excessivecreosote buildup and over two turnsmay cause excessive heat.NOTE: EACH STEP IN THISPROCESS WILL TAKE LONGERIF YOUR WOOD IS DAMP ORWET AND WILL INCREASESMOKE. Normally the bottom draftcontrol is kept closed to burn wood.11.2 Starting a Coal FireStart a fire using the same proce-dure as for wood.Add small, compact pieces of hard-wood when the kindling is burninghot. Keep the draft controls fullyopen to establish a hot fire quickly.The ash door also may be openedduring start-up to accelerate the ini-tial burn.When a substantial bed of red woodcoals are built up, start adding coal(pea or nut is preferred to stove coalfor starting) small amounts at a time.Keep the draft control open.Continue adding small amounts ofcoal until there is a solid bed ofburning coal. Do not add too muchat one time. Allow sufficient timebetween each small loading (at least5-10 minutes), so that each loadinghas time to ignite thoroughly beforethe next load is put in. When a sub-stantial bed of burning coals hasbeen established, fill the stove to thetop of the firebrick. A deep bed ofcoal always will burn more satisfac-torily than a shallow bed.When most of the wood is burnedand the coal is completely ignited(usually 5-10 minutes or less afterfilling the stove), the draft controlshould be turned down to the prop-er operating level. (If the ash doorhas been opened, it must be closedto prevent overfiring, which cancause dangerously high tempera-tures.)11.3 LoadingCoal should never be added unlessthere is a reasonable hot fire. Thecoal bed should be bright and vigor-ous.If the fire is burning hot and there isa deep bed of coals, full loads ofcoal can be added at any time.However, if there is not a deep bedof coals, it is best to add smallamounts of coal at first.11.4 Increasing Heat From aLow FireEvery effort should be made not tolet a coal fire burn too long so thatFigure 611. Operating Instructions