5.3104.1 Controls—Thermostat Replacement

Topic: 
Hydronic Heating (Hot Water and Steam)
Subtopic: 
Equipment Maintenance, Testing, and Repair
For supporting material, see Building America Solution Center.
Desired Outcome: 
Thermostat replaced when appropriate
TitleSpecification(s)Objective(s)
5.3104.1a
Visual inspection

Thermostats will be visually located

Verify anticipator setting, if appropriate for thermostat model

Replacement will be recommended if a digital, double setback thermostat is not present

Determine if existing thermostats need to be replaced

5.3104.1b
Mercury assessment

Thermostats containing mercury will be identified and disposed of in accordance with EPA EPA U.S. Environmental Protection Agency, www.epa.gov guidance

Protect workers and occupants from mercury exposure

5.3104.1c
Removal (if removal is recommended)

Heating system will be de-energized before removal

Thermostat will be removed

Compatibility will be verified (e.g., voltage, wiring condition, location) and documented

Location of existing thermostat will be assessed for appropriateness (e.g., central to the house, out of direct sunlight, away from supply air, protected from abnormal radiant surface temperatures)

Proper removal of thermostat

5.3104.1d
Installation

Location for new thermostat will be determined

Compatibility with new thermostat will be verified (e.g., voltage, wiring, condition, location)

Replacement will be recommended if a digital, double setback thermostat is not present

Heating system will be re-energized and cycled

Thermostat will be programmed to occupant lifestyle choices

Achieve comfort and energy savings for the occupant

5.3104.1e
Disposal

Thermostats will be disposed of in accordance with EPA EPA U.S. Environmental Protection Agency, www.epa.gov guidelines and local regulations

Prevent mercury from entering the environment

5.3104.1f
Occupant education

Occupant will be involved in the initial programming of thermostat and educated on common settings and programming

On new installs, occupants will be encouraged to save the manual and keep it accessible

Educate occupant on best use