Potterton LPG 50e Installation And Servicing Manual page 17

INSTALLATION INSTRUCTIONS - Page 17
FIG. 24 ROUTING OF ELECTRICAL WIRING
Following the pump manufacturer's instructions connect the
pump supply wires to terminals marked PUMP L N
the boiler terminal block. Route the cable through the plastic
bush in the rear of the control box as illustrated in FIG. 24
and secure, using the cable clamp.
Route a four core cable through the plastic bush in the rear
of the control box and the cable clamp as illustrated in FIG.
24 and connect it to the boiler input terminals as follows:—
Fully Pumped Systems.
Permanent live to terminal marked MAINS 'L'.
Neutral to terminal marked MAINS 'N'.
' '
Earth to terminal marked
See NOTE.
Switched live from external controls to terminal marked
MAINS 'SwL'.
If there are no external controls filled connect the SwL
terminal to permanent live in the junction box.
FITTING SIDE INFILL PANELS
If required, the gap between the casing sides and rear wall
can be closed off using the inf ill panels supplied.
Minimum or maximum rear boiler clearance is catered for by
turning the infill panel. Attach each infill panel to the rear of
the boiler using two pieces of magnetic strip and an edge
clip (accessory pack G) positioned as illustrated.
adjacent to cable clamp.
Gravity Domestic Hot Water/Pumped Central Heating
on Systems.
Switched live from external gravity domestic hot water
control circuit to terminal marked MAINS 'SwL'. Switched
live from external pumped central heating control circuit to
terminal marked MAINS 'L'.
Neutral to terminal marked MAINS 'N'. Earth to terminal
' '
marked adjacent to cable clamp. See NOTE.
If there are no external controls fitted connect the SwL
terminal to permanent live in the junction box.
NOTE:
Ensure that the earth conductor is longer than the L, N &
SwL from the point of anchorage, so that the current
carrying conductors become taut before the earth conductor
if cable is pulled out of the cable clamp. When the wiring
has been completed close the control box and replace the
securing screw.