[buffalobillpatrick]

Please explain: "bypass mode"

Modes of operation:
1. Solar heats DHW tank if it's output is hot enough (>150*F)
2. Boiler heats DHW tank.
3. Winter, Solar heats Radiant floors directly (not via HP) if > 90*F
4. Winter, Solar heats Thermal Accumulator if > 110*F which provides heat to Radiant floors.
5. Winter, Solar provides heat input to HP Evaporator (35->90*F),
HP condenser heats Thermal Accumulator (110*F)
which provides heat to Radiant floors.
6. Winter, boiler heats thermal accumulator which provides heat to
Radiant floors.