Nibe Heatrod Elements ESTB 3 Series Fitting Instructions

AESTB 3xx, BESTB 3xx, CESTB 3xx, DESTB 3xx, EESTB 3xx,
CKSTF 3xx & CKSTF -340 REW. ( "xx" denotes immersed length in cm)
3kw Heaters conform to AS/NZ 60335.2.73 and are Nemko approved.
1. Check that the heater rating label shows the voltage that conforms to your mains supply.
2. Install the heater into the water tank or cylinder using the O-ring or gasket supplied. Use a
shaped immersion heater spanner- Stillsons should not be used. The heater may be installed
into a tank of any size, suitable to take this heater when installed in a horizontal manner, and
that the heater is always fitted below water level, such as a cistern-fed tank, if applicable.
3. It is essential that the installer checks that the water level within the tank or cylinder is such
that the water will always fully cover the heating element by a depth of at least 100mm.
Under No circumstances must the heater be allowed to run dry – serious damage may result
to the heater in addition to danger of personal injury and damage to property.
4. Check the heater for possible water leakage before moving on to the wiring stage.
See below for schematic wiring diagram.
5. The heater is to be wired with cable having a minimum size of 1.5 sq mm., 90ºC elastomer
insulated H05BN4-F sheathed cable to AS/NZ 3191. The heater MUST be fully earthed and
wired through a double pole switch having a contact separation of at least 3mm in accordance
with the wiring rules. Ensure all terminal connections are securely made and there are no
loose strands. Do not use excessive force when tightening terminals.
6. Nemko approval will only apply to Approved Heaters if the following thermal controls are
used : Cotherm TSR00014.
The heater conforms to the EEC Directive BS EN 55014-1:2006+A2:2011 for
Electromagnetic compatibility.
Warning : Before making any adjustments within the heater terminal cover, isolate the
heater from the mains electricity supply. DO NOT COVER the heater cap.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with this appliance
7. In the event of the manually resettable cut-out within the thermostat operating, isolate the
heater from the mains supply before removing the terminal cover. Investigate and identify the
cause for the operation of the cut-out, and rectify if possible before manually resetting the
device by pressing the small button located on the top of the thermostat housing. At the same
MS-002
Incorporating ThermTec.
Fitting Instructions for Immersion Heater Types :
Issue 3