Caroma Warranty Q: Is the 104° maximum water temperature high enough to handle drain water from a hot shower? A: The unit was tested at a max temperature of 104°, which would be the maximum that an average bathroom drain would be exposed to. Q: What type of electricity do I need? A: The system requires a 115 volt/15 amp service. Q: If I use a shower and sink with this system, do I still need drain traps? A: Yes. You will need to use a trap on the lavatory and the shower will need to be elevated to allow for a P-trap. Q: Does this toilet system have the option of left or right handle placement? A: No. The Ascent II is only available with a left hand flush handle. Question?