Example No. 3 - 7 Loads, Control Mode = Each Phase Independently - SOLAR controls WATTrouter Mx series User Manual

WATTrouter Mx - user manual
EXAMPLE NO. 3 – 7 LOADS, CONTROL MODE = EACH PHASE INDEPENDENTLY
Loads specified in example No. 2 but more complex connection. Control mode is set for each phase
independently. In this example, it is necessary to distribute the appliances as uniformly as possible to the
individual phases, which is more complex and rarely can be done optimally.
Connect the following to L1 phase:
- boiler has 1st priority (SSR No. 1).Requirements are the same as in example No. 1.
- pool filtering pump has 2nd priority (relay No. 1).Requirements are the same as in example No. 2. Again we
can set the "Prepend before SSR" condition to make better use of PV-surpluses.
Connect the following to L2 phase:
- heating pump has 1st priority (relay No. 2).Requirements are the same as in example No. 2.
- 1st heating coil with 2nd priority (SSR No. 2).
Connect the following to L3 phase:
- auxiliary contact with 1st priority (SSR No. 5 operating as a relay), will also turn on the heating pump
connected actually to phase L2 (here, a small amount of power may be drawn from the public grid at phase L2,
but in order to prevent it we would have to use two circulation pumps).
- 2nd heating coil with 2nd priority (SSR No. 3).
- optionally also the 3rd heating coil in the 3rd priority (SSR No. 4), however, only if the assumed PV-power at
this stage is enough and it pays to buy another SSR.
How to fit and setup the device Page 57 from 82