7
STEP 7
(all cylinders)
Make electrical connections to the immersion heaters - see wiring diagram inside cap of
immersion heater. All electrical installations must be to IEE standards.
The immersion heaters fitted to the Tornado and Tempest Stainless™ cylinder are of a special
construction and include both a control thermostat and overheat protection. Only use genuine
replacement parts which can be obtained from a Telford Water Heaters approved merchant.
Ensure that the immersion heater control setting is set between 55°C and 65°C for economical
operation. TT
he upper limit thermostat is pre-set to 80
o
C and must not be tampered with.
STEP 8
Commissioning & Operating
Ensure all connections are fully tightened.
Open all of the hot taps supplied by the cylinder and slowly fill the unit by opening the service valve.
Continue to fill the unit until water runs continuously from all of the open taps. Open the service
valve fully, and close all hot taps.
Check for leaks.
Heat the water to 60
o
C. Once the desired temperature has been reached, the cylinder should be
isolated and drained to flush out any flux/solder introduced during the installation process. The
filter in the inlet control set should be removed, cleaned and re-fitted -
see photograph.
Reheat the cylinder to desired temperature and recheck for
leaks.
For safety and energy saving reasons it is advisable to
operate the Tornado Stainless™ at a temperature between
55°C and 60°C. The boiler thermostat (indirect models only)
should be set to 75°C, or above, to achieve the best per-
formance from the Tornado Stainless™.
STEP 9
Remove the protective film from the outer case of the Tornado Stainless™ and wipe down. Place
this instruction book in a convenient place for the end user. Complete the Benchmark Log Book
and guarantee card and leave with the cylinder.
NEW TORNADO/TEMPEST 25336 19/4/05 12:25 PM Page 14
