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INSTALLATION 

Connection of the safety heat exchanger (Quenching coil) 

(Only for boilers provided with safety heat exchanger)

 

 
The boiler has a build-in safety 
heat exchanger which cools the 
boiler in case of pump failure or 
the like. The system will be 
activated if the water 
temperature in the boiler 
exceeds 95°C. 
 
The thermal safety valve must 
be connected to constant water 
pressure from a G¾”/22mm 
pipe. The water pressure must 
be minimum 2 bar and the 
temperature maximum 15°C 
There must be no shutoff valves 
on the pipe supplying the valve.   
 
Flush the pipes before 
connecting to the thermal safety 
valve. Dirt or metal shavings 
can cause the valve to 
malfunction. 
 
The return drain from the safety heat exchanger G¾” must be connected to a 
drain. 
The pipe used to connect to the drain must have a sufficient size to avoid the 
emergence of backpressure. 
 
After installation the system must be tested to ensure free passage trough the 
safety heat exchanger. The thermal safety valve can be manually activated by 
pressing the red cap. 

 

 

Thermal safety valve - 95°C

Supply cold water for 
quenching coil

Temperature sensor
for thermal safety valve

Drain from quenching coil

Summary of Contents for M20i

Page 1: ...er cooled burner tube boiler rear page 9 Diagram 2 Connection to the heating system page 10 Diagram 3 Connection to the chimney page 11 Diagram 4 Connection of the external auger page 12 Only for plants provided with automatic fill in Diagram 5 Electrical diagram 400V 3 phase 500 700 l fuel store page 13 Diagram 5 1 Electrical diagram 230V 1 phase 500 700 l fuel store page 14 Diagram 5 2 Electrica...

Page 2: ...lts you must adjust the height of the fuel store by means of the 4 adjustment screws on the legs so that it is placed horizontal and in a 90 º angle to the boiler It is absolutely important that the water cooled burner tube is horizontal as you otherwise might experience air pockets in the system By 800 and 1400 litre fuel store mount wheels under fuel store and adjust height 4 The water cooling o...

Page 3: ... on side of boiler with 800 or 1400 litre fuel store All dimensions in centimetres C B F E A C B F Flue outlet spigot 80 D D 40 40 Flue outlet spigot Recommended minimum distances in boiler room seen from above Stoker inlet on rear of boiler with 800 or 1400 litre fuel store All dimensions in centimetres 5 Dimensions Clerance Recommended size of boiler room M20i M40i M80i A B C D E F 265 290 350 1...

Page 4: ... be in non blockage connection to the expansion tank You must not be able to block the pipe between Should the open expansion tank be placed in a not frost safe place the tank itself must be protected against frost The circulation to the tank must be controlled by a thermostatic valve or similar in order to secure that the boiler water is getting minimum access to oxygen Connection of the sprinkle...

Page 5: ...There must be no shutoff valves on the pipe supplying the valve Flush the pipes before connecting to the thermal safety valve Dirt or metal shavings can cause the valve to malfunction The return drain from the safety heat exchanger G must be connected to a drain The pipe used to connect to the drain must have a sufficient size to avoid the emergence of backpressure After installation the system mu...

Page 6: ...ed with a 30mm fire resistant mat to avoid that the flue gasses are condensing in it Recommended chimney dimensions Plant type Max effect input Flue outlet on boiler Free opening in chimney Height of chimney M20i 34 kW Ø 155 mm Ø 160 180 mm 5 6 metre M40i 55 kW Ø 187 mm Ø 180 200 mm 5 8 metre M80i 92 kW Ø 215 mm Ø 200 250 mm 6 8 metre Connection of the external auger Only for plants provided with ...

Page 7: ...ted before filled with water as this might damage it Setting of the internal circulation pump The pump must be set to run in a fixed step It must not run in Auto mode Boiler Pump step M20i I M40i I M80i II Extended auger channel If you request an extended auger channel we supply the control as a separate unit to be fitted on the wall above the auger channel in the boiler room Check cable length be...

Page 8: ...ed horizontal to avoid airpockets in the hoses Connection for sprinkler Hose for pressure equalising pipe Fan no gasket Draft regulator Supply boiler Boiler Burner Fuel store tube Included fittings 2 pcs hose 1 pcs safety valve 2 pcs shutoff valve 1 pcs shutoff valve 1 pcs cirkulation pump 5 pcs hexagon nipple 1 pcs tee 1 pcs 1 hexagon nipple 1 pcs tee 2 pcs elbow 2 pcs union joint for pump ...

Page 9: ...uded fittings 2 pcs hose 1 pcs safety valve 1 pcs cirkulation pump 2 pcs union joint for pump 2 pcs shutoff valve 1 pcs shutoff valve 5 pcs hexagon nipple 1 pcs tee 1 pcs x x tee 1 pcs plug M20 x 1 hexagon nipple M40 x 1 hexagon nipple M80 x 2 connection nipple hexagon nipple Connection for sprinkler Hose for pressure equalising pipe Fan no gasket Draft regulator Supply boiler Boiler Burnertube Fu...

Page 10: ...eturn water to the boiler always is over 60 C Manuel regulation valve return valve V4 To protect open expansion vessel against frost Can be thermostatic return valve Airing V5 Airing possible automatic placed where needed Thermometer T1 T4 Thermometer for supply water return before and after shunt valve and for flue temperature Temperature sensor TF1 Temperature sensor to regulate shunt valve Mano...

Page 11: ...k build chimney Module chimney with steel or ceramic liners Insulated tee module with draft stabilizer Insulated tee module with clean out Wall support Draft stabilizer mounted in chimney Clean out Draft stabilizer mounted on flue pipe Clean out Brick build or block build chimney Elbow with clean out hole Module chimney with steel or ceramic liners Insulated tee module with clean out Elbow with cl...

Page 12: ...l in Fuel from silo placed at the loft above Automatic fire damper closes incase of fire in the boiler room Flexible hose Fuel Valve Fuel from external silo Flexible hose Fuel valve The auger must not support on the stoker unit and vibrations from the auger must not be transmitted to the stoker unit ...

Page 13: ...uger 24V AC W 1 N U 1 V1 L1 L2 L3 T1 T2 T3 JP 3 N W 5 12V AC 0V white orange rød lysrød F1 4AT F3 315mAT F2 4AT N U 3 W V U N A1 A2 Silo auger 12V D C 0VAC 12V AC 12V AC 0V D C AC 1 0VAC 24V AC 0VAC 12V D C 12V D C C ontakt Belim o C apacitive sensor Brown W hite Blue AC G ND 22 23 O 2 Signal O V Signal 0V AC Black G rey Hot boiler therm ostat Lid Safety Switch 25 26 28 27 29 30 32 31 41 42 44 43 ...

Page 14: ...ner Trafo 09 01 2012 MM L1 L2 L3 T1 T2 T3 A1 A2 13 14 Blower 22 23 X4 O2 Signal O Volt Signal 0V AC Black Grey 7 8 5 6 7 8 5 6 Lambda Sonde High Tempartur Watertemp X3 24 12V AC White 25 26 28 27 29 30 32 31 1 2 3 4 1 2 3 4 NTC X5 White 41 42 44 43 45 46 X10 5 6 4 8 9 7 11 12 10 13 1 2 3 X6 15 16 14 18 19 17 21 20 X11 U2 N2 U X7 W V N U1 W1 V1 X8 X9 X1 12VAC 12VAC 0VAC 33 34 36 35 37 38 40 39 X2 2...

Page 15: ...12V AC Hvid Hvid U W V N 24VAC W1 N U1 V1 L1 L2 L3 T1 T2 T3 JP3 N W5 12VAC 0V white orange rød lysrød F1 4AT F3 315mAT F2 4AT N U3 W V U N A1 A2 12VDC 12VAC 12VAC 0VDC AC 1 0VAC 0VAC AC GND 22 23 O2 Signal O Volt Signal 0V AC Sort Grå Hot Bolier sensor Lid Safety Switch 25 26 28 27 29 30 32 31 41 42 44 43 45 46 Bolier tempsensor NTC 12VDC 12VDC U2 N2 Condensator U1 W1 V1 ...

Page 16: ...01 2012 MM L1 L2 L3 T1 T2 T3 A1 A2 13 14 Blower 22 23 X4 O2 Signal O Volt Signal 0V AC Black Grey 7 8 5 6 7 8 5 6 Lambda Sonde High Tempartur Watertemp X3 24 12V AC White 25 26 28 27 29 30 32 31 1 2 3 4 1 2 3 4 NTC X5 White 41 42 44 43 45 46 X10 5 6 4 8 9 7 11 12 10 13 1 2 3 X6 15 16 14 18 19 17 21 20 X11 U2 N2 U X7 W V N U1 W1 V1 X8 X9 X1 12VAC 12VAC 0VAC 33 34 36 35 37 38 40 39 X2 24VAC Alarm 0V...

Page 17: ...17 DIAGRAM 6 Diagram 6 Electrical diagram Start stop signal for external auger Only for plants provided with automatic fill in ...

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