Unigas PBY70, Manual Of Installation - Use - Maintenance

C.I.B. UNIGAS

 - M039241CB

29

LIMITATIONS OF USE

THE BURNER IS AN APPLIANCE DESIGNED AND CONSTRUCTED TO OPERATE ONLY AFTER BEING CORRECTLY CONNEC-
TED TO A HEAT GENERATOR (E.G. BOILER, HOT AIR GENERATOR, FURNACE, ETC.), ANY OTHER USE IS TO BE CONSIDE-
RED IMPROPER AND THEREFORE DANGEROUS.

THE USER MUST GUARANTEE THE CORRECT FITTING OF THE APPLIANCE, ENTRUSTING THE INSTALLATION OF IT TO
QUALIFIED PERSONNEL AND HAVING THE FIRST COMMISSIONING OF IT CARRIED OUT BY A SERVICE CENTRE AUTHORI-
SED BY THE COMPANY MANUFACTURING THE BURNER.

A FUNDAMENTAL FACTOR IN THIS RESPECT IS THE ELECTRICAL CONNECTION TO THE GENERATOR’S CONTROL AND
SAFETY UNITS (CONTROL THERMOSTAT, SAFETY, ETC.) WHICH GUARANTEES CORRECT AND SAFE FUNCTIONING OF
THE BURNER.

THEREFORE, ANY OPERATION OF THE APPLIANCE MUST BE PREVENTED WHICH DEPARTS FROM THE INSTALLATION
OPERATIONS OR WHICH HAPPENS AFTER TOTAL OR PARTIAL TAMPERING WITH THESE (E.G. DISCONNECTION, EVEN
PARTIAL, OF THE ELECTRICAL LEADS, OPENING THE GENERATOR DOOR, DISMANTLING OF PART OF THE BURNER).

NEVER OPEN OR DISMANTLE ANY COMPONENT OF THE MACHINE.

OPERATE ONLY THE MAIN SWITCH, WHICH THROUGH ITS EASY ACCESSIBILITY AND RAPIDITY OF OPERATION ALSO
FUNCTIONS AS AN EMERGENCY SWITCH, AND ON THE RESET BUTTON.

IN CASE OF A BURNER SHUT-DOWN, RESET THE CONTROL BOX BY MEANS OF THE RESET PUSHBUTTON. IF A SECOND
SHUT-DOWN TAKES PLACE, CALL THE TECHNICAL SERVICE, WITHOUT TRYING TO RESET FURTHER.

WARNING: DURING NORMAL OPERATION THE PARTS OF THE BURNER NEAREST TO THE GENERATOR (COUPLING
FLANGE) CAN BECOME VERY HOT, AVOID TOUCHING THEM SO AS NOT TO GET BURNT.

OPERATION



Turn the burner on by means of its main switch 

S1

 (see next pictures).



Check that the burner is not locked (LED 

E

 lights up); if so, reset it by pressing the reset button 

R

.



Check that the series of thermostats/pressure switches (terminals 3 and 4 - see Wiring diagrams), the TCI thermostat and the pilot
gas pressure switch enable the burner to start up.



At the beginning of the start-up cycle, the fan mtor starts up and the compressed air valve (EVA) opens. (If the oil atomising pres-
sure is not enough, the PAC pressure switch closes the oil valve causing the burner to lock out). The pre-purge phase begins (the
air damper is closed).



After the post-ignition time, the transformer is de-energised and the pilot truns off some seconds later.



When the oil valve open, the burner is working: the actuator starts opening. The burner drives to high flame (A signalling lamp on)
or to low flame (B signalling lamp on) according to the plant requirements.



When the burner turns to off, even in case of lock out, the EVL valve performs the oil gun cleaning (page 28).

ATTENTION:

 before starting the burner up, be sure that the manual cutoff valves are open. Be sure that the mains 

switch is closed.

PART II: OPERATION