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Instructions for TWIN HEAT Compact stoker type Cpi 12 Year: Prod. No.: Serial: TWIN HEAT Compact stoker type Cpi 12 has been tested and approved according to DS/EN303-5 by “Danish Technological Institute” (The test institution for smaller bio heating appliances) Wood pellets with app. 8% water content Forrest wood chips with app.
Table of contents ......................... 1 Plant drawing ........................2 Section 1- The control panel....................3 The display in the control panel ................ 3 Menu structure....................4 Adjustment of temperature ................4 How to choose fuel type ................... 5 O2 regulation ore manual operation ..............5 1.5.1 Adjustment of Man.
Section 1- The control panel 1.1 The display in the control panel How to read / interpret various parameters, which can be read in the display. Visible menu lines Not visible menu lines The not visible menu lines can be found by pressing ...
1.2 Menu structure The various adjustment possibilities are looked up in searching by means of the arrows at the front of the control panel If you want to leave the menu without making any changes, press Errors are cancelled by pressing »START« **Settings menu*** Pel.
1.4 How to choose fuel type In the settings menu under fuel type you can choose between 4 programs There are 3 fixed programs for respectively Wood pellets, Grains or Wood chips. The programs are adapted to the individual type of fuel. If you choose to use another kind of fuel than the above mentioned, you have the possibility to choose Other under fuel type.
A high value = low O2 = fat combustion, where the flames have reddish / black tips A low value = high O2 = meagre combustion where the flames have yellow / blue tips When the boiler is running, you will read O2 MAN instead of O2 Auto in the display. The measured O2 value is shown, but not used by the controller.
1.6.1 Start parameters Under Start you can adjust 2 parameters for the start up of the boiler. Soft start: Defines the period for the boiler to reach 100% load, when starting up a cold boiler. Stoker delay: Defines the period where the auger is not running, when starting up a cold boiler.
My settings by ”Other fuels” Date Fuel type Start Soft start [min] Stoker delay [min] Running O2 100% Stoker pulse [sec] Stoker term [sec] Pause Stoker pulse [sec] Stoker term [sec] After run blower Start pulse [sec] Man. Fac. [%] 1.8 Calibration of lambda probe If the lambda probe over time becomes less precise, it has to be calibrated.
Section 2 – Start up and normal use 2.1 Filling up with fuel When filling up with fuel the stoker must be stopped (press “Stop”) 1 to 2 minutes prior to opening the lid to the fuel store, to prevent flue gasses from being pressed back into the store.
2.3 Lighting the fire It is recommended to start the fire by means of a dry wooden fuel. Add e.g. 15 to 30 kg pellets or sawdust in the base of the store and then add the alternative fuel, e.g. grains on top.
2.5 Running mode Running mode means, that the controller constantly adjust the boiler load in the area 20 to 100 % depending on the actual heat demand. The controller will constantly aim after the temperature chosen, e.g. 70 ºC. The fan will operate in pulses, to reduce the amount of air by lower boiler loads.
If you want to stop the boiler for a longer period then you MUST empty the burner tube from glows to avoid a burn-back into the fuel store. The risk of burn-back is varying from one fuel to the next. Wood chips are more likely to cause back-burn than grains or pellets.
Section 3- Troubleshooting Possible errors will appear in the upper line in the display. When the problem has been solved the message Low temp. (start) can be annulled by pressuring »START« Temperature : 33,8 O2 Auto : 20,9 % O2 wanted : 8,0 % Before restarting the boiler after any errors, please check, if the sprinkler has sprinkled...
3.3 Low temp. The boiler stopped because the boiler temperature has fallen more then 15ºC below the adjusted value. Had the boiler temperature been set on 70 ºC an error would be announced, when the temperature has been under 55 ºC for more than 10 minutes. Causes: ...
NOTE: High O2 is only active when the boiler is in running mode If you still see glows in the burner tube, press »START« and the boiler will restart as described in Section 2.4, soft start. In case the fire should be extinguished, the fire must be started again as described in section 2.2 “Taking fuel forward to the burner tube.”...
The bearing behind the big chain wheel should be greased by means of a grease pump. Important Please always remember to cut the power to the boiler during any form of maintenance or repair work! It is recommended to have the boiler checked once a year by a Twin Heat professional! Section 4- Maintenance...
4.2 Maintenance of boiler The combustion room and the flue tubes are cleaned through the doors in the front of the boiler. Clean the tubes by pulling brush forth and back in each tube. Loose sod and ashes are pushed into the flue box at the rear side of the boiler.
4.4 maintenance of fuel store The grey cover at the rear of the stoker is removed. The chains must be greased by oil or grease. The chain must be tightened to 15 º (shown on the tightening devise). All the chain wheels are tightened The bearing behind the bigger chain wheel is greased by a grease pump Chain tightener The sprinkler valve is controlled by unscrewing the hose, where after...
Section 5- Various types of fuel 5.1 Wood pellets Wood pellets are made by pressing fine grinded wood through a matrices under high pressure adding steam. Pellets are produced in diameters between 3 and 25 mm. If they are over 25 mm, they are called briquettes. The pellets are cooled down and put through sieves to remove dust.
Additives If the pellets are produced without any binding materials, they will easily dissolve in water, when immersed. Try to put a few pellets into a glass of water. If they dissolve within a few minutes, the risk of unwanted binding material and the like is very low. Dust The content of dust between the pellets should be very low, as dust can be a real problem.
5.3 Machine / industrial chips Machine chips are made from waste wood from furniture production or the like. The size of such chips vary from 2 – 3 cm up to 8 – 10 cm, and the thickness round 2- 10 mm.
Section 6- Technical information 6.1 Cpi 12 Approved fuel Pellets Chips Grains Class Water content in fuel 20,8 13,0 Nominal load Minimum load Load sphere 0,5 -15 0,5 - 12 0,5 - 12 Capacity of fuel store Litre Combustion period by full fuel store Hours 15/40 Efficiency by nominal load...
7.1 Parts list burner tube Parts no. Pcs. Description 2100020-00 Combustion ring 2100060-00 Front flange 2100071-00 Gasket in front of burner nearest boiler 2100070-00 Washer flange behind gasket in front of burner 0103011-00 Gasket between burner and fuel store 2100051-00 Gasket between burner and boiler 6200308-00 Top nut...
7.3 Parts list fuel store Parts no. Pcs. Description Technical data 7000100-00 Chain wheel Z16 – Ø20 7000103-00 Chain link 7000102-00 Chain for auger 73 links 7000130-00 Chain tightener, external 7000135-00 Roll for chain tightener 7000105-00 Chain wheel Z13 Ø 25 7000106-00 Flange bearing for auger Ø30...
7.4 Parts list boiler Parts no. Pcs. Description 6001009-00 Cleaning brush ø 38mm 3100011-00 Gasket for boiler door 3100021-00 Gasket for cleaning door 3103000-00 Boiler door, complete 3103040-00 Insulation for boiler door 6101115-00 Gasket for lambda probe 4001100-00 Lambda probe 4001160-00 Over heat thermostat 3100030-00...
7.7 - Diagram – The placing of components Section 7 – Diagrams...
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Nørrevangen 7 DK- 9631 Gedsted Phone +45 98 64 52 22 - Fax +45 98 64 52 44 Herewith declares that TWIN HEAT Stoker model Cpi 12 Is in conformity with the provisions of the Machinery Directive (directive 98/37/EC) and with national implementing legislation...
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Enclosure 1 – How to mount the chain for stirrer and stirrer wings The stirrer wings included ( both long and short versions) are mounted as shown on picture. The long model must be fit on the rear side of stirrer plate – towards the chain (The wings might break, if placed wrong way) Stirrer wing- long model Stirrer wing- short model...
Enclosure 2 – accessories included Cleaning brush Ø40 mm. and handle. Fire hook Stirrer wings, long and short version Plus chain for the mounting of stirrer Enclosure 2 – Oct. 2002...
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