Ariston INTESA TP23 Manual del usuario, instrucciones de instalación y mantenimiento - Página 25

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7.

COMMISSIONING

7.1
Initial Preparation
Preliminary electrical system checks to ensure electrical safety
must be carried out by a competent person i.e. polarity, earth con-
tinuity, resistance to earth and short circuit.
F
H
S
:
ILLING THE
EATING
YSTEM
Lower the control panel and remove the case panels (see
S
6.11 for further information).
ECTION
Open the central heating flow and return cocks supplied with
the connection kit (there are two isolation points on the return
connection).
Unscrew the cap on the automatic air release valve one full
turn and leave open permanently.
Close all air release valves on the central heating system.
Gradually open valve(s) at the filling point (filling-loop) connec-
tion to the central heating system until water is heard to flow,
do not open fully.
Open each air release tap starting with the lowest point and
close them only when clear water, free of air, is visible.
Purge the air from the pump by unscrewing the pump plug
anticlockwise, also manually rotate the pump shaft in the
direction indicated by the pump label to ensure the pump
is free.
Refit the pump plug.
Continue filling the system until at least 1.5 bar registers on the
pressure gauge.
Inspect the system for water soundness and remedy any leaks
discovered.
Filling of the D.H.W. System:
Close all hot water draw-off taps.
Open the cold water inlet cock supplied with the connection kit.
Open slowly each draw-off tap and close them only when clear
water, free of bubbles, is visible.
Gas Supply:
Inspect the entire installation including the gas meter, test for
tightness and purge the supply as described in BS 6891:1988.
Open the gas cock (supplied with the connection kit) to the
appliance and check the gas connections on the appliance for
leaks.
When the installation and filling are completed, flush the system
while cold, refill, turn on the Central Heating system (Section
7.2) and run it until the temperature has reached the boiler oper-
ating temperature. The system must then be immediately flushed
through.
The flushing procedure must be in line with BS 7593:1992 code
of practice for treatment of water in domestic hot water central
heating systems.
During this operation, we highly recommend the use of a central
heating flushing detergent (Fernox Superfloc or equivalent),
whose function is to dissolve any foreign matter that may be in
the system.
Substances different from these could create serious prob-
lems to the pump or other components.
The use of an inhibitor in the system such as Fernox MB-1 or
equivalent is strongly recommended to prevent corrosion
(sludge) damaging the boiler and system.
Failure to carry out this procedure may invalidate the appli-
ance warranty.
Supplied By www.heating spares.co Tel. 0161 620 6677
7.2
Initial Start-up
T
HE CHECKS TO BE RUN BEFORE INITIAL START
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 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 pushing the On/Off button "A"
(see F
. 6.16) - the L.E.D. "K" will illuminate. Then push the
IG
button "F" in for central heating - the L.E.D. "G" will illumi-
nate. This will start the circulation pump. 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 sys-
tem.
- 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 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 bar.
2. Make sure that all gate 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 "I" for the lighting system; the spark
will light the main burner. 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 needed using the values indicated in the table in
S
4.
ECTION
7.3
Operational Adjustments
To access the areas in which adjustments are made, it is neces-
sary to open the control panel, as indicated in Section 6.11, then
remove the rear inspection cover by unscrewing the two screws.
Access is thereby provided to the P.C.B. and to the following com-
ponents:
1. The power supply cable connector;
2. The fuses;
3. The soft-light potentiometer the setting for which can range
from the minimum thermal power to the maximum;
4. The maximum thermal heating power potentiometer
adjustable by the minimum to maximum power (already cali-
brated in the factory to 70% of the maximum thermal power);
5. The jumper for adjusting the ignition delay (anti-cycling) fea-
ture, which can be set from 0 to 2 minutes (set in the factory
at two minutes);
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.
25
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UP ARE AS FOLLOWS