TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
The STB safety thermostat has been
triggered.
Upon reaching a temperature of 95°С, the thermostatic
safety protection device is triggered and the fan is turned
off. To resume protection, remove the black cap on the
back panel of the boiler and press the button on the STB-
thermostat. Contact your installer to determine the cause of
protection triggering.
Lowboilertemperature.
Unabletoreachnormaltemperaturemodeof65°-85°С
Cause Solution
Inadequate sizing and/or
combinaon of heang appliances
Immediately consult your installer about the problem.
Ejeconofunburnedpelletsintothecombusonchamberoftheboiler
Cause Solution
Poor adjustment of the fuel-to-air
rao from the burner controller
Contact your installer. It is necessary to set the burner
properly using gas analyzer
Ulizaon of low-quality pellets Use only fuel which meets the requirements specied in the
manual. (see secon 3. Fuel)
Formaonofclinkersandnoncombusbleinclusionsinsideburnerbody
Cause Solution
Ulizaon of low-quality pellets
(see secon 3. Fuel)
Use only fuel which meets the requirements specied in the
manual.
Low performance of the automac
cleaning system
Increase the frequency of inclusions of self-cleaning system
Improper seng of fuel-air mixture Adjust using gas analyzer
Boilertemperaturetoohigh.Controllerfailure
Cause Solution
Grid power uctuaons
It is mandatory to assure a backup power generator of
corresponding rated power! (see table 1)
Power failure
High temperature of exhaust gases.
High temperature alarm is turning
on
Fume exhaust tubes of boiler water jacket are clogged with
soot. Reduced heat transfer. The boiler should be cleaned.
Please contact an authorized specialist / service shop to
clean the boiler.
High temperature in boiler water
jacket and low temperature in the
buer tank.
1. Incorrect ON/OFF temperature sengs of pumps.
2. Incorrect sizing of heang system.
Boilerwatertoohot,heangbodiestoocold
Cause Solution
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