The freeze prevention will work as long as there is electrical power. Do not install unit outdoors in climates where temperature falls below – 4 Degrees F in the absence of wind. Do not install indoors where-in outside temperature falls below – 30 degrees F. (Please be advised, some models do not come with freeze prevention. )
Cold climate recommendations:
- When installing indoors, make the venting as long as possible inside the building (within the limitations of the installation manual).
- If possible do not SV convert the unit and install it as a DV unit (both intake and exhaust venting to the outside).
For more information refer to model specifications sheet located at http://support.noritz.com/technical-literature.php
- Models: ALL MODELS