Lamborghini Caloreclima PNZ 30 Manual Del Usario página 32

PRE-HEATER TANK
CAPTION
1 Tank pipe – attachment base
2 Sealing ring
3 Tank filter
4 Thermometer
5 Minimum thermostat
6 Maximum thermostat
7 Electric resistance clamps
8 Drain tap
9 Pre-heater tank
10 Filter fixing rod
CHECKLIST
- Make sure the equipment is working properly.
- Make sure the IGNITION program of the burner is the regular one; stages should follow this sequence:
When command thermostat TC and minimum thermostat are closed the device is supplied and checks the various inter-
nal electric circuits; the burner motor and the ignition transformer start working. Pre-ventilation and pre-ignition phases
begin (t1 and t3); electro-magnetic valve VE1 is excited and the fuel reaches the first-flame nozzle. The pre-ventilation
phase is over and the safety period begins (t2), during which flame should form regularly. Discharge between the extre-
mities of electrodes continues, giving place to post-ignition (t3n); within 5 seconds after VE1 excitation the equipment
will order the opening of the 2nd-flame electro-magnetic valve by means of the air servo command consent. The burner
ignition program will therefore finish. If, for any reason, no flame is formed, the equipment will stop in its safety position,
signalled by red light LR on the switchboard (see fig. 6) which will remain on. Once the equipment is blocked the burner
motor will stop, as will the ignition transformer; at this point the washing electro-magnetic valve is unexcited and releases
the flow of fuel in the boiler.
- To unblock the burner press unblock button PS (fig. 6).
LOA 44.../LMO 44
signals leaving the device
incoming necessary signals
CAPTION
TC Boiler thermostat
T min Minimum thermostat
MB Burner motor
VE1 1st flame electro-magnetic valve
VE2 2nd flame electro-magnetic valve
FR Photoresistance
TR Ignition transformer
tw Fuel pre-heating time - according to the system use
t1 Pre-ventilation time
t3 Pre-ignition time
t2 Safety time
t3n Post-ignition time
t4 Time between "VE1 and VE2" command
* According to the moment when the flame appears
9
6
5
8
7
TC
t w
Tmin.
MB
TR
VE1
VE2
FR
~ 25 s
~ 25 s
max. 5 s
(~ 2 s* LOA 44) (~ 5 s* LMO 44)
~ 5 s*
Block due to lack of flame – > 1 s
- 32
-
1
2
3
4
10
t1
t3n
t3
t 2
t 4
FIG. 12
1
1
3
6
4
5
1 1
1 2
FIG. 13