Advertisement
3.2
I
S
-
NITIAL
TART
UP
E
C
A
C
E
C
D
3.3
O
PERATIONAL
A
DJUSTMENTS
A
I I
F
. 2.27
IG
I I
F
. 2.28
IG
A
T
HE CHECKS TO BE RUN BEFORE INITIAL START
:
FOLLOWS
1. Make sure that:
- the screw on the automatic air valve has been
loosened when the system is full;
- If the water pressure in the system is below 1.5 bar,
bring it up to the appropriate level;
- Ensure that the gas cock is closed;
- Make sure that the electrical connection has been
made properly and that the earth wire is connected to
an efficient earthing system;
- Supply power to the boiler by turning the On/Off knob
"A" (see F
. 2.27) - "on" will appear on the display.
IG
Turn the knob "C" to maximum and switch the time
clock to constant and turn up the room stat where
fitted.
After 7 seconds, the boiler will signal a shutdown due
to ignition failure. Leave the boiler as it is until all of
the air has been bled from the system.
- Loosen the cap on the head of the pump to eliminate
any air pockets;
- Repeat the procedure for bleeding the radiators of air;
- Open the hot water taps for a brief period;
- Check the system pressure and, if it has dropped,
open the filling loop again to bring the pressure back
up to 1.5 bar.
2. Make sure that all radiator valves are open;
3. Turn on the gas cock and check the seals on the
connections with an approved soap solution and
eliminate any leaks.
4. Press the reset button "D" (see F
will re-attempt ignition. If the burner does not light the
first time, wait 1 minute and repeat the procedure.
5. Check the minimum and maximum burner pressure
values; adjust if necessary using the values indicated
in the table in S
ECTION
To access the areas in which adjustments are made, it is
necessary to open the control panel, as indicated in
S
2.12, then remove the rear inspection cover by
ECTION
unscrewing the two screws "A". Access is thereby
provided to the P.C.B. and to the following components:
1. The power supply cable connector;
2. The fuses;
3. The soft-light potentiometer the setting for which can
range from the minimum ther mal power to the
maximum;
4. The maximum thermal heating power potentiometer
adjustable by the minimum to maximum power
(already calibrated in the factory to 70% of the
maximum thermal power);
5. The jumper for adjusting the ignition delay (anti-
cycling) feature, which can be set from 0 to 2 minutes
(set in the factory at one minute);
6. Fan/Pump Over-run (Electrical Diagram). When the
jumper is set to position A the Fan and Pump over-run is
activated. (The jumper is factory set in position B)
7. The time clock connector (see pae 20).
-
UP ARE AS
. 2.28) the boiler
IG
4 (Page 27).
23
Advertisement
