Technical data

TECHNICAL AND INSTALLATION

Immersion Heater

The SmartLineE range of tanks have the facility for fitting a 3kW immersion heater for back-up

emergency use when the primary heating fails not as a permanent form of summer time

heating, this heater must be wired to its own 13 Amp fused spur and as described in the

installation instructions for Thermtec immersion heaters.

Installation Instructions for Thermtec Immersion Heaters Series AF, BF, CF, DF, AD, BD, CD, DD.

1. Ensure mains voltage corresponds to the voltage rating of the heater as shown on the

rating label on the terminal cover.

2. Install the heater into the water tank, using the gasket or ‘O’ ring supplied (the use of

sealing compounds is not recommended). Use a shaped spanner to tighten (stillsons

should not be used).

3. It is essential that water fully covers the heating element to a depth of at least 100mm.

Under no circumstances must the heater be permitted to run dry – serious damage may

result to the heater in addition to danger of personal injury and damage to property.

4. Check for possible leakage before wiring.

5. Wire the heater in accordance with the diagram below. The heater should be wired

through a double pole isolating switch or controller, having contact separation of at least

3mm using 1.5sqmm flexible cable, 85°C rubber insulated HOFR sheathed, complying

with BS6141 Table 8. It must be fully earthed. Ensure all terminals are securely made,

however do not use excessive force when tightening.

6. BEAB approval will only apply to this heater if the following thermostats are used:

Series AD, BD, CD, DD control thermostat – Diamond H WT Series or Sunvik VKL

Series. Re-settable master thermostat – Sunvik Series VKL and Thermtec SK. Series

AF, BF, CF, DF. Thermowatt type RTS-3 thermostat.

7. In the event of the manually resettable cut out operating, isolate the heater from the

mains, investigate and identify the cause of cut out, rectify before resetting and then re-

energise the heater. Replace the terminal cover securely before re-energizing.

8. All heaters conform to EEC directive 76/889 for radio interference and comply with BS

800:1977.

BEAB

APPROVED

Heater Series

AD, BD, CD, DD

Heater Series

AF, BF, CF, DF

WARNING!

UNDER NO CIRCUMSTANCES CAN THE IMMERSION HEATER BE

SWITCHED ON BEFORE THE PRIMARY TANK IS FILLED.

SERIOUS DAMAGE MAY RESULT TO THE HEATER IN ADDITION TO

DANGER OF PERSONAL INJURY AND DAMAGE TO PROPERTY IF

HEATER IS SWITCHED ON WHEN DRY.