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| INSTALLATION MANUAL for CFEWH SERIES 6-13 | V01 - 12 / 02 / 2021
PREPARATION FOR USE
After installation, this two-step procedure must be followed.
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 one to two minutes.
›
After flushing, remove the
13
Inlet Filter from the cold water
inlet, clean any debris due to installation and flushing, and
refit. (see Fig. 1)
STEP 2: PRIME
The unit must be primed – this is required only once – priming will
happen after initial installation.
(Priming is only required when the electricity supply to the unit has
been turned off/removed from the unit – for example, after a power
failure or an isolation switch OFF condition.)
Priming is required to set the unit up environmentally to ensure that
the heating ramp-up time from start during normal operation will be
as short as possible, without incurring power overshoot.
Once primed, the unit will ramp-up to the optimized power required
at the time without overshoot.
NOTE: Power overshoot typically results from the maximum power input required to get a heat exchanger up to working
temperature as quickly as possible. However, as the unit does not incorporate a heat exchanger, this initial power
‘kick’ is not required at start up.
›
Turn the electricity supply on – check for the
16
LED slow flashing
GREEN
. The unit is now in stand-by mode.
›
Turn on the hot water faucet to a flow rate greater than 0.39 gpm (the unit will start heating – check for
16
LED fast
flashing
GREEN
), and allow the unit to run for about three minutes.
NOTE: Depending on the initial flow rate during priming, the unit will not start heating until approximately 0.3 gallons
of water has cycled through the unit. This is to ensure that any air in the system has been flushed. Heating will have
started once the
16
LED is fast flashing
GREEN
. This will happen whenever the electrical mains power is turned off to
the system and ensures optimum performance.
THE UNIT IS NOW PRIMED AND READY FOR USE!
6
13
7
Cold Water Inlet
Inlet Filter
See Component Diagrams on Page 4 for Full Parts Key.
Hot Water Outlet
Fig. 1
