23
This heater is rated 3kW at 240V~ only and must be wired to a
totally separate, suitably rated mains supply. THERE MUST BE
NO INTERCONNECTION WITH THE WIRING TO THE
BOILER.
Warning: THIS HEATER MUST BE EARTHED. IT SHOULD BE
INSTALLED IN ACCORDANCE WITH THE CURRENT IEE
WIRING REGULATIONS AND BE WIRED THROUGH A
DOUBLE POLE ISOLATING SWITCH OR A SUITABLE
CONTROLLER. THE HEATER MUST BE FULLY IMMERSED
AND NOT BE SWITCHED ON DRY. SECURE CABLE GRIP
USING ONLY SCREWS PROVIDED.
THIS IMMERSION HEATER HAS A SPECIAL 1
3
/
4
" BSP
THREAD. IT IS NOT
INTERCHANGEABLE WITH STANDARD
IMMERSION HEATERS. USE ONLY THE ‘O’ RING SEAL
PROVIDED. THE USE OF ANY SEALANT ON THE ‘O’ RING IS
NOT RECOMMENDED.
THE HEATER MUST BE WIRED WITH 85°C RUBBER
INSULATED HOFR SHEATHED FLEXIBLE CABLE 1.5 mm
2
COMPLYING WITH BS 6141 TABLE 8. THE OUTER
SHEATHING SHOULD BE SECURED USING THE CABLE
GRIP FITTED AND ROUTED AWAY FROM THE BOILER
THROUGH ONE OF THE GROMMETS PROVIDED.
OPTIONAL IMMERSION HEATER
FIRST FIX PLUMBING GUIDE
The heater is controlled by the rod type thermostat fitted.
A temperature setting of 65°C is recommended and is factory
pre-set.
The thermostat incorporates a thermal cut-out which cuts the
power to the immersion heater in an overheat situation. Should
this operate it can be manually reset by pressing the black
button to the side of the temperature adjustment dial.
NOTE: Investigate the cause of the overheating prior to
resetting.
Should the immersion heater require replacement use only the
Powermax spare part P3223.
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