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Preparation for use
This process must be followed after installation and prior to first use
ThermoSphere Micro Electric Boilers must be primed after installation and before the first use.
Priming is also required after the electricity supply to the unit has been turned off or removed, for example after a
power failure or isolation of the electrical supply.
Priming is required to set the unit up for optimal heating ramp-up time and maximum efficiency. A correctly primed
TSMEB will ramp up to the optimised power required as efficiently as possible without overshoot.
Note: Power overshoot typically occurs in instantaneous water heaters as a result of the maximum output required
to get a heat exchanger up to working temperature as quickly as possible. However, as TSMEBs do not have a heat
exchanger the risk of overshoot is greatly reduced because it does not require a power “kick” at start up.
Your ThermoSphere Micro Electric Boiler is now ready for use!
Step 1: Flush
• Flushing is required to clear the unit of plumbing
debris that may have collected in the piping during
installation.
• This is done with the electric power supply turned off
• Flush water through the unit.
• Flushing should be allowed to continue for at least 2
minutes.
• After flushing remove the inlet filter from the cold
water inlet, clean any debris due to installation and
flushing and refit.
Step 2: Prime
• Turn the electricity supply on and check the LED is slow flashing
GREEN
. The unit is now in stand-by mode.
• Turn on the hot water outlet to a flow rate greater than 1.5 ltr/min. The unit will start heating.
• Check the LED is fast flashing
GREEN
and allow the unit to run for at least 3 minutes before closing the outlet.
Automatic air purging during priming
Depending on the initial flow rate during priming, the unit may not start heating until approximately 1.2 Litres of
water has cycled through the unit. This is to ensure that any air in the system has been purged.
You know heating has started as soon as the LED starts fast flashing
GREEN
. This automatic air purging and priming
will happen whenever the electrical mains power is turned off, to ensure optimum performance.
