Unigas PN91 Manual Of Installation - Use - Maintenance page 18

C.I.B. UNIGAS
Oil thermostat adjustment
Progressive and fully modulanting oil burners are equipped with electronic multi-thermostat Danfoss MCX, whose operation is con-
trolled by thyristor. (for details refer to the attached technical documentation)
Fig. 10 - Danfoss MCX
Pb4
Pb3
Pb4
Pb1
Fig. 11 - Probe connections (Danfoss MCX)
Burners equipped with double tank
All thermostats are located inside the control panel. To set the temperature use a small screwdriver.
Such temperature must be set during burner operation, checking temperature in the thermometer mounted on the pre-heating tank. We
suggest a thermometer with scale up to 200° C.
Adjust this thermostat to the correct value according to the visco-
sity-temperature diagram and check the temperature by using a
thermometer with a scale of up to 200° C mounted on the pre-hea-
ting tank.
Safety resistors thermostat TRS: it is factory preset and sealed.
Don not modify it!
When the set temperature is exceeded, check the reason and
reset it by means of the push button PR
Resistor thermostat TR: check the best atomising oil tempera-
ture and set it on TR.
Thermostat TCN (it gives the enabling signal to the oil N.C. valve):
PR
set TCN at about 20° less than TR.
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