Thermo Technologies SMT 400 User Manual

Page 13

SET SCREEN 2 - THE SMT 400 PUMP CONTROL MATRIX

COL > TC

TNK2>TT2

TNK1>TT1

Set Screen function selector
Pressing this key a second time reveals Set Screen 2. The Screen allows the
user to program the output status of each pump when the SMT is in one of
three states. (It is assumed that the collector temperature is greater than the

return temperature by

State 1 - When the COLL > TC, the controller is in State 1. Therefore any
pump which has been selected in Column 1 will be “ON”.

State 2 - When the TNK1 > TT1 and COLL > TC, the controller is in State 2.
Therefore any pump which has been selected in Column 2 will be “ON”. The
conditions for State 2 are overridden when the ‘Smart’ mode is
selected. Please refer to “Smart Mode Select” on page 13. If the ‘Smart’
mode is selected ‘S’ will appear at the bottom right hand corner of this
window.

State 3 - When the TNK2 > TT2 and TNK1 > TT1 and COLL > TC, the
controller is in State 3. Therefore any pump which has been
selected in Column 3 will be “ON”.

Note:

This indicates that Pump1 will be “ON” for this State.

This indicates that Pump1 will be “OFF” for this State. To

change the status of any pump simply use the

keys to

move the selection window, then use the

key to switch the

pump to “ON”, and the

key to switch the pump to “OFF”