Functional Wiring Diagram - Potterton Suprima 100 Installation & Service Instructions Manual

5. Functional Wiring Diagram

Boiler Lighting Sequence
1. Supply external voltage to boiler terminal connections L
and N, 230 volts, 50 HZ.
2. Supply external voltage to boiler terminal connection,
switch line SW 230 volts, 50 HZ.
3. Pump live from boiler energised, diverter/zone valves
operate in accordance with system demand.
4. Boiler control checks, air pressure switch for "No Air
Condition" (red light "On", green light "Flashing").
5. If "No Air" the control switches on the fan.
6. After ten seconds air pressure switch proves fan is on.
7. Gas valves open and ignition for 3 seconds (green light
flashes rapidly).
8. Boiler firing (green light "On" only).
Key Colours:
br = Brown
bk = Black
v = Violet
r = Red
y = Y ellow
Temperature 1
2
Sensor
Air Pressure
Switch
Overheat
Stat
Live
v
Fan Neutral
Ear t h
Gas
Valve
b
y
g/ y
b
L N E SwL
N
Pump
T h i s Ap p l i a n c e m u s t
Terminal Connector (7 way)
o = Orange
b = Blue
w = White
g/ y = Green / Y ellow
g = Green
y
y
or
or
1
1
w
2
v
g/ y
1
Ear t h g/ y
bk
1
2
1
b
br
g/ y
g/ y
Case
L E
Earth
Mains
b e E a r t h e d Point
9. If the flame is not detected at this time, the boiler will
turn off.
10. The above sequence will repeat for a further two
ignition attempts before going to lockout (indicated by
the red light flashing).
11. Pressing the reset button will re-start boiler at No. 1.
12. The control will continue to run the pump for several
minutes after any firing of the boiler.
13. The control will run the pump automatically for a few
minutes every twenty four hours to maintain the free
running of the pump.
14. The standby position on the thermostat control knob
will prevent the boiler firing but will permit operation of
the pump for sequences 12 and 13.
1
J5
3
w
Circuit Board
J6
9
r
7
J8
y
br
r
J7
1 2
J4
Optional
Programmer
Earth Return
Connection to earth metel
at burner end of lead
J10
3
1
w
J9
w
or
or
Temperature
5
Red LED
HT
Green LED
Out
Reset Button
Resistive HT Lead
Combined Flame Sense
and Ignition Electrode
Live
switch
contacts
for
standby
Control