Honeywell T8600; T8601; T8602 Chronotherm
• IV Plus Programmable Thermostats
• IV Plus Programmable Heat Pump Thermostats; T8624 Chronotherm
• IV Plus Programmable Multistage Thermostats Provide electronic control of 24 Vac single-stage or
multistage heating and cooling systems, including heat pump systems.
LARGE display with Bright back lighting makes the LCD very easy to read.
Full seven-day program capability; different schedules and temperature setpoints may be selected for everyday to
match the homeowner
•s flexible schedule.
Copy key makes programming easier and faster for the installer and homeowner.
Daylight Saving Time (DST) key for quick change in and out of Daylight Saving Time. Models available with programmable fan
operation for added homeowner comfort.
Easy temporary temperature setpoint changes for current period, vacation hold (1 to 255 days) or indefinite hold adds to the homeowner comfort and energy savings. Frequently used keys are located by the Liquid Crystal
Display (LCD) for quick and easy access to information. Attractive styling complements any decor to the homeowner
Models available with C7089B1000 outdoor temperature sensor capability for homeowner convenience. The sensor is also more accurate
than a thermometer. Configurable features allows one model to be used to replace many different models (less inventory, no longer
need to carry separate models to get these features)
•C temperature display
Automatic or manual changeover
Electric or conventional heat fan operation
Adjustable heating cycle rate.
Minimum off time for cooling compressors and heat pumps protects the equipment and extends the equipment life.
Easy installation, setup and system test saves installer time and increases productivity.
System test simplifies troubleshooting and saves time by overriding the time delays.
Adaptive Intelligent Recovery
• control brings the room temperature to temperature setpoint at the programmed time, maximizing
comfort and energy savings.
Setpoints are permanently held in memory (no batteries used) and retained during power outages for increased installer and homeowner
Powerstealing, hardwired and battery powered models available for virtually all equipment and application needs.
• Thermostat guards available for added security.
Adjustable temperature range stops.
Application Heat Pump Systems.
Programmability 7 Day Program .
Changeover Automatic, Manual Selectable.
Power Method Hardwired.
Color Premier White
Switches (Fan) AUTO-ON .
Switches (System) HEAT-OFF-AUTO-COOL-EM. HT.
Terminal Designations R,C,Y1,Y2,W3,E,O/B,G,L,X1,X2,OT,OT.
Dimensions (in.) 3 3/4 in. high, 6 1/16 in. long x 1 9/16 in. deep.
Dimensions (mm) 95.3 mm high, 154 mm long, 39.7 mm deep.
Mounting Thermostat mounts on a wallplate. Wallplate mounts horizontally on wall or outlet box with two no. 6 x 32 screws (included).
Electrical Ratings (Vac) 20 to 30 Vac.
Frequency (Hz) 50 Hz, 60 Hz.
Humidity Ratings (% RH) 5% to 95% RH, non-condensing.
Setting Temperature Range (F) Heat: 40 F to 90 F; Cool: 45 F to 99 F.
Setting Temperature Range (C) Heat: 4 C to 32 C; Cool: 7 C to 35 C
Differential Temperature (F) 1 F .
Differential Temperature (C) 0.5 C.
Outdoor Sensor Yes, optional.
Sensor Element THERMISTOR.
Currents (Heating) 1.5A running, 3.5A inrush.
Currents (Cooling) 1.5A running, 7.5A inrush.
Currents (Fan) 0.5A running, 2.5A inrush.
Description Chronotherm IV Plus Heat Pump Programmable.
Ambient Temperature Range (C) 4 C to 43 C.
Ambient Temperature Range (F) 40 F to 110 F
Stages 3 Heat/2 Cool
Replaces Part Numbers: T8611M2025, T8611M7008, CART8611M2025