Potterton Osprey CF 125, Installation & Service Instructions Manual, Page: 15 / 30

Installation - Page 15
2.4 Connect the Power Supply Cable
1. The mains supply should be 230V 50Hz and fused at
3A.
2. The mains wiring to the boiler has to be connected
inside the control panel
Access to the Control Panel Wiring Block
a. Open the top panel of the boiler by unscrewing the
rear screws.
b. Turn the blocking bracket 'A' to the inside of the
boiler.
c. Open the control panel and turn as shown in Fig.
11.
d. Remove the 2 screws 'B'.
e. Lift metallic strip to enable access to the wiring
block 'C'.
3. Cable clamping is provided on the side panel and
control panel. Feed the cables through the cable holder
and clamps, and into the terminal connection.
Note: When connecting the power supply cable, ensure
that the length of the earth wire is such, that if the
power supply cable pulls out of the cable clamp the live
and neutral wires become taut before the earth wire.
4. The pump wiring should be routed as the mains wiring,
through the cable clamps and connected to the terminal
connections PL and PN - Fig. 12.
5. Take up excess slack in the cables between the
terminal block and the cable clamp, then tighten the
cable clamp screws.
Ensure sufficient slack is available to the cable clamps
to allow the control panel to hinge freely. Check by
opening the control panel.
6. Close the back panel of the control board and secure
using the two screws - see Fig. 12.
7. Close the control panel by turning it upwards and
pushing it onto hinge D.
8. Carry out preliminary electrical system checks i.e. Earth
Continuity, Short Circuit, Polarity and Resistance to
Earth.
Frost Thermostat:
If a Frost Thermostat is to be fitted, the connections
should be made in the wiring external to the boiler.
Do not switch on the electricity supply at this stage.
Fig. 11