Publication No. 5105703
20
PRF0027A
Fig. 25
Installation
Following the pump manufacturer’s instructions
connect the pump supply wires to terminals
marked PUMP L, N,
on 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 '
' adjacent to cable
clamp. See Note.
Switched live from external controls to terminal
marked MAINS’ SwL’.
If there are no external controls fitted connect
the SwL terminal to permanent live in the
junction box.
Gravity Domestic Hot Water/Pumped Central
Heating 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.
PUMP
L
N
Swl
N
L
MAINS
PRF0030A
Test Socket
Gas Control Valve
Supply Lead
2.11. Fitting Side Infill Panels
If required, the gap between the casing sides and rear wall can be closed
off using the infill panels supplied.
Ensure the casing surface is
fully clean and dry. Remove the protective
backing paper from the adhesive strip on the infill panel, carefully align
and press into place, applying
firm even pressure down the full length of
contact area between panel and case. It conditions are near freezing, the
boiler case should be warmed prior to application of the infill panel.
Fig. 24
