I must admit the instructions are rather poor, 32 amps is clearly the size of the overload, the unit is unlikely to have much of an inrush, as inverter drive, but that is still 64 amps for the two units, which, if it is a 60 amp supply, means total supply to the house is for heating/cooling. Since 32A is a standard size for an overload, it is possible it does not use the full 32 amps. It says it has a 14.5 kW output, it seems likely the input is 3 to 5 times lower, depending on how efficient the unit is, so 12.6 to 21 amp, one would not run a 21 amp machine on a 20 amp MCB, and not all makes do a 25 amp, so seems likely the total is under 45 amps, but that is only a guess, so there seems only one option, ask the manufacturers.