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4.3 OPERATION
It is recommended that the immersion heater thermostats are set to between position 4
and 5 (60
- 65
C), however they can be set between 1 and 5 (10
o
o
stat incorporates a thermal cut-out that will switch off the immersion heater in the event of
a thermostat failure. The thermal cut-out reset button position is indicated on Figure 10.
DO NOT bypass the thermal cut-out in any circumstances.
4.4 SAFETY
DO NOT BYPASS THE THERMAL CUT-OUT(S) IN ANY CIRCUMSTANCES
DISCONNECT FROM THE MAINS SUPPLY BEFORE REMOVING ANY COVERS
NEVER ATTEMPT TO REPLACE AN IMMERSION HEATER OTHER THAN WITH THE REC-
OMMENDED HEATRAE SADIA MEGAFLO SPARE PART
Figure 9 -
Schematic wiring
diagram - Direct
immersion
heaters
THERMOSTAT
FUSED (13A) DOUBLE
POLE ISOLATING
SWITCH
1.5mm
3 CORE
2
HOFR SHEATHED
CABLE
Figure 10 - Immersion heater details
THREADED EDGE CLIP
THERMOSTAT
THERMOSTAT
ADJUSTMENT
EARTHING TAG
NOTE: FOR CLARITY THE EARTH LINK WIRE BETWEEN CUSTOMER EARTHING
TERMINAL AND EARTHING TAG NOT SHOWN. THIS MUST NOT BE REMOVED!
EARTH
CONNECTION
THERMAL CUT-OUT
RESET BUTTON
CUSTOMER
EARTHING
TERMINAL
CABLE GLAND
ELECTRICAL
TERMINATIONS
and 70
C). The thermo-
o
o
17
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