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5 Boiler Installation
5.10 External Controls
Make sure that the supply cable and all external cables aresecured and away from hot surfaces.GRAVITY DOMESTIC HOT WATER AND PUMPED CENTRALHEATING, SEE DIAGRAM 5.9.FULLY PUMPED OPEN VENTED OR SEALED WATERSYSTEMS, SEE DIAGRAM 5.10. 5739 5.11 Testing
Checks to ensure electrical safety must be carried out by acompetent person.After installation of the system, preliminary electrical systemchecks as below should be carried out:-1. Test insulation resistance to earth.2. Test earth continuity and short circuit of all cables.3. Test the polarity of the mains.The installer is requested to advise and give guidance to theuser on the controls scheme used with the boiler. LIP BRACKET Diagram 5.8
SECURINGSCREWS (2) GRAVITY DOMESTIC
HOT WATER AND
PUMPED CENTRAL
HEATING CABLECLAMPS
MAINSCABLE g/yCHASSISEARTH
L
K1K2 XXX
Pump must be wired intocentral heating system remote
controls and NOT to control
boxYellow link fitted to bridge outthe overheat cutoff P
Make sure that the red link is connected betweenterminals SL and 9 on the terminal block, asdiagram 5.9 and 9.6. PN r
Ensure RED LINK connectedbetween 9 and SL. SLNL9 brb 230~50HzMAINSSUPPLYFUSED
AT 3-AMP g/yEN
y Diagram 5.9
Diagram 5.10
REMOVEYELLOWLINK FULLY PUMPEDOPEN VENTED
OR SEALED
WATER SYSTEM CABLECLAMPS
MAINSCABLE g/yCHASSISEARTH PUMPCABLE SWITCH CONTROL,TIME SWITCH,PROGRAMMER ETC.(when fitted remove
red link)
K1K2 P brbLEN CIRCULATONPUMP
PN SLNL9 r RED LINK brb L 230~50HzMAINS
SUPPLYFUSEDAT 3-AMPg/yEN
Any external controls must only be wired to interruptthe red link between terminals SL and 9.See relevant wiring diagrams for either, a sealedwater system or fully pumped open vented, diagram5.10 and 9.7. 21 221656D