Honeywell TB8220U installation instructions

62-3070-03TB8220U Commercial VisionPRO™Programmable Thermostat

The TB8220U Programmable Thermostat provides electronic control of 24 Vac heating and cooling systems.

See Table 1 for a description.

Table 1. TB8220U Thermostat Description.

If this control is replacing a control that contains

mercury in a sealed tube, do not place your old

control in the trash. Dispose of properly.

Contact your local waste management authority

for instructions regarding recycling and the

proper disposal of an old control.

1. Read these instructions carefully. Failure to follow

them could damage the product or cause a

hazardous condition.

2. Check ratings given in instructions and on the

product to ensure the product is suitable for your

application.

3. Installer must be a trained, experienced service

technician.

4. After installation is complete, check out product

operation as provided in these instructions.

Electrical Shock or Equipment Damage

Hazard.

Can shock individuals or short equipment

circuitry.

Disconnect power supply before installation.

Select a location for the thermostat about 5 ft (1.5m)

above the floor in an area with good air circulation at

average temperature. See Fig. 1.

Feature Description

Powering Methods •Battery only

•Direct connection to a 24 Vac transformer only

•Direct connection to a 24 Vac transformer with battery backup

System Types •Conventional (up to 2 Heat, 2 Cool stages)

•Heat Pump (up to 3 Heat, 2 Cool stages)

Changeover Manual or automatic changeover (selectable)

System Setting Heat-Off-Cool-Auto

Fan Setting Auto-On