Supplied By www.heating spares.co Tel. 0161 620 6677
24
Optia FF
-
Installation & Servicing
INSTALLATION
37 WATER CONNECTIONS
1.
Remove the plastic plugs from the flow and
return pipes.
2.
Make all water connections and check for
water soundness.
38 ELECTRICAL CONNECTIONS
WARNING.
The appliance must be efficiently earthed.
A mains supply of 230 V ~ 50 Hz is required.
All external controls and wiring must be suitable for mains voltage. Wiring
should be in 3-core PVC insulated & sheathed cable, not less than
0.75mm
2
(24 x 0.2mm) to BS. 6500 Table 16 Wiring Regulations and
local regulations. For IE reference should be made to the current ETCI
rules for electrical installations.
Connection must be made in a way that allows complete isolation of the
electrical supply - such as a double pole switch, having a 3mm (1/8")
contact separation in both poles or a plug and socket, serving only the
boiler and system controls. The means of isolation must be accessible
to the user after installation.
36 GAS CONNECTION
External wiring must be in accordance with the current I.E.E.
(BS 7671) Wiring Regulations. For Ireland reference should be
made to the current ETCI rules for electrical installations.
The wiring diagrams illustrated in Frames 41-43 cover the
systems most likely to be fitted to this appliance.
For wiring external controls to the Optia FF boiler, reference
should be made to the system wiring diagrams supplied by the
relevant manufacturer, in conjunction with the wiring diagrams
shown in Frames 41-43.
Difficulty in wiring should not arise, providing the following
directions are observed:
1.
Controls that switch the system on or off, e.g. a time switch,
must be wired, in series, in the live mains lead to the boiler.
2.
Controls that override an on/off control, e.g. frost
thermostat, must be wired into the mains lead, in parallel,
with the control(s) to be overridden. Refer to Frame 43.
3.
If a proprietary system is used, follow the instructions
supplied by the manufacturer.
4.
System designs featuring controls or wiring
arrangements which allow the boiler to fire when there is
no pump circulation taking place should not be fitted.
Advice on required modifications to the wiring may be
obtained from the component manufacturers.
Notes.
1.
Connection between a frost thermostat and the time
control should be made without disturbing other wiring.
2.
A frost thermostat should be sited in a cool place in the
house, but where it can sense heat from the system.
Refer to 'Gas Supply ', page 8.
Refer to Frame 2 for gas inlet service dimensions.
A
minimum
pressure of 20 mbar MUST be available at the boiler inlet
with the boiler operating. The main gas cock is on the left hand side of
the gas control valve, as shown. To facilitate connection the gas cock
may be removed from the gas control valve.
Flow wiring diagram
Note.
If the optional Programmer Kit is to be
fitted refer to the instructions provided with the
kit and Frame 39.
1.
Remove the control box securing screws.
Swing the box down into the servicing
position. Refer to Frame 46.
2.
Route the mains cable into the box from
the RHS of the boiler.
3.
Connect the live, neutral and earth wires
into the terminal strip as shown.
4.
Secure the mains lead with the cable
clamp.
5.
On completion of all wiring connections,
relocate the control box and secure.
Limit
thermostat
Programmer unit
O/heat thermostat
Thermostat sensor
L
N
b
br
br
br
L
L
B
L
B
Off On Off On
8 Pin connector to
system controls
Optional Programmer Kit
Boiler
Switch
HW CH
ALL EARTHS must be connected
(Not all earths are shown for clarity)
Air
pressure
switch
y
or
r
w
C
la
26
4
2
Combined spark &
sensing electrode
L
NTC
NC
N
C
NO
P.C.B. 25
GV 1
GV 2
FAN
E
Main gas
Pilot gas
Fan
b
b
Connect
to
gy
bk
br
or
pk
w
y/g
N
bk bk
NO
NC
com
bk bk
r
r
y
v
LEGEND
b
blue
bk
black
w
white
y/g
yellow/green
br
brown
gy
grey
or
orange
pk
pink
r
red
v
violet
39 EXTERNAL CONTROLS
INST
ALLA
TION
200776-4.pmd
6/23/2005, 10:12 AM
24
