10
INSTALLATION
combination boiler -
Installation and Servicing
The boiler does not normally need a bypass but at least some
radiators on the heating circuit, of load of at least 20% of the
minimum boiler output, must be provided with twin lockshield
valves so that this minimum heating load is always available.
See note regarding thermostatic radiator valves on page 8.
Note.
Systems incorporating zone valves which could completely cut
off the flow through the system, must be wired such that the
boiler will not fire or continue to fire when this occurs.
BALANCING
1.
Set the programmer to ON.
Close the manual or thermostatic valves on all radiators,
5
SYSTEM BALANCING
leaving the twin lockshield valves (on the radiators referred
to above) in the OPEN position.
Turn up the room thermostat and adjust these lockshield
valves to give boiler flow and return temperatures not more
than 20
o
C apart.
These valves should now be left as set.
2.
Open all manual or thermostatic radiator valves and adjust
the lockshield valves on the remaining radiators, to give
around 15
o
C temperature drop at each radiator.
3.
Adjust the room thermostat and programmer to NORMAL
settings.
6
WATER TREATMENT
The
europa
boiler has a COPPER heat exchanger
IMPORTANT.
The application of any other treatment to this product may render the guarantee invalid.
If water treatment is used,
FERNOX MB1 or SENTINEL X100 is recommended
. For further information, to contact:
Fernox Manufacturing Co. Ltd.
Betz Dearborn Ltd., Widnes, Cheshire, WA8 8UD
Tel: 0151 424 5351
Tandem House, Marlowe Way, Croydon, Surrey, CRO 4XS.
Tel: 0870 5601 5000
Sentinel Division
Notes
.
1.
It is most important that the correct concentration of the
water treatment product is maintained in accordance with
the manufacturers' instructions.
2.
If the boiler is installed in an existing system any
unsuitable additives
MUST
be removed by thorough
cleansing. BS. 7593:1992 details the steps necessary to
clean a domestic central heating system.
3.
In hard water areas, treatment to prevent lime scale
may be necessary - however, the use of artificially
softened water is
NOT
permitted.
4.
Under no circumstances should the boiler be fired
before the system has been thoroughly flushed.
19.
CH flow pipe.
20.
CH thermistor.
21.
Diverter valve.
22.
By-pass pipe.
23.
DHW outlet fitting.
24.
DHW outlet pipe.
25.
DHW inlet pipe.
26.
Overheat thermostat.
27.
Low water switch.
28.
DHW thermistor.
29.
Heat exchanger.
30.
Air pressure switch.
31.
Venturi.
32.
Fan outlet gasket.
33.
Fan.
34.
Fan bracket.
35.
Fan inlet gasket.
36.
Collector hood.
1.
Complete casing.
2.
LH ignition lead.
3.
Gas valve.
4.
Gas inlet pipe.
5.
Ignition/Flame detection electrode.
6.
Burner.
7.
Ignition transformer.
8.
Pump.
9.
Pressure gauge.
10.
Fascia board.
11.
Control Housing.
12.
Automatic air vent.
13.
CH return pipe.
14.
DHW Inlet fitting.
15.
Pump clips.
16.
Pressure relief valve.
17.
DHW flow switch.
18.
DHW inlet pipe.
7
BOILER ASSEMBLY - Exploded View Legend
37.
Exp. vessel flexible pipe.
38.
Fixing clips.
39.
Expansion vessel.
40.
Combustion chamber insulation.
41.
Combustion chamber.
42.
Mains chassis.
43.
Flow restrictor.
44.
Vertical protection shield.
45.
Horizontal protection shield.
46.
Flame detection lead.
47.
Overheat thermostat clamp.
48.
PCB.
49.
Fan outlet connector.
96.
RH ignition lead.
97.
Manual air vent.
INSTALLATION
