Honeywell T8320U Programmable Thermostat

Can the TH8320U control zone valves?

Yes, the TH8320U can control both power to open and close zone valves (Series 20) and normally open zone valves. This capability allows it to manage multi-zone heating and cooling systems.

Is the TH8320U compatible with heat pump systems?

Yes, the TH8320U is compatible with heat pump systems. It supports heat pump operation as one of its system type options for both heating and cooling.

How many heating and cooling stages does the TH8320U support?

The TH8320U supports up to 3 heating stages and 2 cooling stages. This allows for efficient multi-stage temperature control in larger or more complex HVAC systems.

What should I do if my thermostat contains Perchlorate material?

The thermostat's Lithium battery may contain Perchlorate material, which requires special handling. You should visit www.dtsc.ca.gov/hazardouswaste/perchlorate for specific disposal and handling instructions.

Where can I find help or customer support for the TH8320U?

For assistance with the TH8320U, you can visit http://customer.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502. Both resources are available to help with product questions and troubleshooting.

Is the TH8320U suitable for heat-only systems?

Yes, the TH8320U can be used in heat-only applications, including two-wire systems, power to open and close zone valves, normally open zone valves, warm air, hot water, high-efficiency furnaces, steam, and gravity systems. It is also suitable for heat-only systems with a fan.