Settings Of Draft Regulator (Figure 13); Assesment Of Boiler Operation - Stropuva S7 Technical Passport Installation And Maintenance Instructions

7.3 SETTINGS OF DRAFT REGULATOR (fi gure 13)
then ignite the boiler (fi g. 13 B). When metal and water gets hotter cylinder becomes longer
and lowers the valve. When indications of thermometer becomes stable under 80
open the valve by using temperature adjustment bolt (2) if temperature is higher than 80
slightly close it till temperature falls under 80
adjustment bolt so that valve would be lifted, if temperature is too high, turn the bolt to opposite
direction closing the valve. Also adjust the marking ring, so that you would know the position of
valve (fi g.13 C), for example: it is advisable to close the valve when removing ash. We want to
remind you that boiler operation temperature must be 70 – 90

7.4 ASSESMENT OF BOILER OPERATION

a) If after ignition, boiler works correctly, but later its power and draft decreases it means
that fl ue is not sealed properly: check if door for fl ue cleaning is closed or if there are other
openings, eliminate them.
b) If after ignition of fuel you hear rhythmic noise and occasionally see smoke coming out it
means that fl ue draft is to strong – boiler is unable to attain its power and works very ineffi cient-
ly: in this case you need to let in some air into fl ue through special opening on horizontal con-
nection. Metal band fl ue ring must be pushed till the pulsation of boiler disappears (see fi g. 6).
c) If fuel is burning well, but temperature increases very slowly and there is condensation
leaking out of fl ue it means that the fl ow of heated water going through boiler is excessive: Set
circulation pump to the bottom position and reduce the fl ow with help of boilers balance tap or
reduce the fl ows in heating elements till there will be no more condensation leaks and thermo-
meter will show 70 – 80
TECHNICAL PASSPORT INSTALLATION AND MAINTENANCE INSTRUCTIONS
Figure 13
o
C.
o
Operation of this regulator is based
on the principle that while housing gets
hotter and expands, valve (1) closes
and when its housing is getting colder
valve opens.
After bringing the boiler into boiler
room ant connecting it to the piping of
heating system, check if parts of draft
regulator are not deformed. Bump of
its metal part (5) must be in the hole of
valve lever and the spike of temperatu-
re adjustment bolt (2) must be in recess
of lever. Recess and hole are close to
each other – 3,5 cm apart. Check if val-
ve completely seals the air vent (6) and
if the bolt that holds the valve is loose,
do not tighten it.
Set the valve 3-5 cm from air supply
opening using supportive bolt and only
C. Later, if the temperature is too low, turn the
C.
o
C, slightly
o
C –
o
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