21
221657C
GRAVITY DOMESTIC HOT WATER
AND PUMPED HEATING
Diagram 5.9
✽
RED
LINK
PUMP
CABLE
MAINS
CABLE
PUMP
CABLE
✽
RED
LINK
YELLOW
LINK
✽
Leave "RED LINK" if
fitting remote controls
CABLE
CLAMPS
FULLY PUMPED OPEN VENTED
OR SEALED WATER SYSTEM
Diagram 5.10
CABLE
CLAMPS
MAINS
CABLE
✽
Remove "RED LINK"
if fitting remote controls.
MAINS
CABLE
5740
4615
MAINS
CABLE
Diagram 5.8
5 Boiler Installation
SECURING
SCREWS (2)
5739
LIP BRACKET
5.10 External Controls
FULLY PUMPED
Any external controls must only be wired to interrupt the red link
between terminals SL and 9.
See relevant wiring diagrams, for either a sealed water system,
or fully pumped open vented, diagram 5.10 and 9.7.
PUMPED HEATING AND GRAVITY DOMESTIC HOT WATER
Make sure that the red link is connected between terminals SL
and 9 on the terminal block, as diagram 5.9.
Make sure that the supply cable and all external cables are
secured and away from hot surfaces.
5.11 Testing
Checks to ensure electrical safety must be carried out by a
competent person.
After installation of the system, preliminary electrical system
checks 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 the
user on the controls scheme used with the boiler.
