The unoccupied temperature setting shall be 55°F (i.e. setback). This may be adjusted to a 60°F setting during extreme weather.
The unoccupied time shall begin when the students leave an area.
During the spring and fall when there is no threat of freezing, all steam and forced-air heating systems should be switched off during unoccupied times. Hot water heating systems should be switched off using the appropriate loop pumps.
Ensure all domestic hot water systems are set no higher than 120°F or 140°F for cafeteria service (with dishwasher booster).
Ensure all domestic hot water recirculating pumps are switched off during unoccupied times.
For heat pumps, ensure a 6 °F dead-band between heating and cooling modes.