Potterton PRIMA 30C User Manual page 18

INSTALLATION INSTRUCTIONS - Page 18
Route a three core cable through the plastic bush in the rear
of the control box and the cable clamp as illustrated I Fig 16.
Connect the cable to the boiler input terminals as follows:
Switched live on the GRAVITY DHW control circuit to
terminal marked MAINS 'SwL'
Neutral to terminal marked MAINS 'N'
Earth to terminal marked MAINS
Secure the cable within the clamp by tightening the two
securing screws.
The pump should be connected to PUMPED CENTRAL
HEATING control circuit at the junction box. See FIG. 13
Figure 16 WIRING THE BOILER FOR
COMBINED GRAVITY HOTWATER/PUMPED
CENTRAL HEATING SYSTEM
Figure 17 FUNCTIONAL FLOW DIAGRAM
Figure 18 BOILER WIRING DIAGRAM
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