Senztek SolaStat-Plus-ET, Installation Manual, Page: 17 / 30

Installation Guide for the SolaStat™-Plus-ET
Version 1.2 – July 2011 Page 15
I
NSTALLER
P
ROGRAMMING
,
C
ONTINUED
Energy
Transfer
Mode
Energy Transfer Mode Triggers the Energy Transfer Pump to circulate the
isolated heated water stored in the tank to an external load such as
swimming pool, under floor heating or spa pool, etc. It triggers at different
temperatures in summer and winter to allow choosing different loads. There
are four values involved:

Energy Transfer On in Summer – The temperature to turn on the
energy transfer pump in summer.

Energy Transfer Off in Summer – The temperature to turn off the
energy transfer pump in summer.

Energy Transfer On in Winter – The temperature to turn on the energy
transfer pump in winter.

Energy Transfer Off in Winter – The temperature to turn off the energy
transfer pump in winter.
To enter Winter Mode, press PUMP and TRAN buttons at the same time for
at least 3 second. WINTER led will be on to indicate the Winter Mode is
activated. Repeat this to go back to Summer Mode.
Example: Energy Transfer Off in Summer = 60ºC, Energy Transfer On in
Summer = 70ºC. When the tank temperature has reached to 70ºC, the
energy transfer pump turns on to pass the stored water to the load.
Note:
1. The Energy Transfer On value must always be higher than the the
Energy Transfer Off value.
2. Pressing the ‘TRAN’ button will manually initiate an energy transfer from
the Hot Water Tank. However if the temperature at the tank sensor is
below the ‘Energy Transfer Off’ value then no operation can take place.
Frost
This is the temperature at which the pump turns on to stop the collector from
freezing. This is critical to avoid damage to the solar collector. The
appropriate value depends on variables such as geographic location, angle
and type of solar collector, sensor placement, fluid used, etc. All of these
must be considered when determining frost value. This is the installer’s
responsibility.
We recommend 4ºC as a minimum in mild frost areas only, but this may
need to be increased for some installations. Frost can be disabled if
necessary and it is indicated as ‘OFF’.
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