Chronotherm IV Plus RF Wireless Programmable Thermostat provides wireless control of 24 Vac heating and cooling systems. Use with W8665A for single-zone applications or W8665E for zoning applications.
Features
Specifications
Literature
No wires to thermostat allows easy installation.
Ideal for retrofit zoning.
Use when current thermostat inconveniently located or to add a thermostat to a room addition.
Easy-to-read large display with bright back-lighting.
Full seven-day flexible program capability; different schedules and temperature setpoints selectable each day.
Copy key makes programming easier and faster. Daylight Savings Time (DST) key.
Models available with programmable fan operation.
Easy temporary temperature setpoint changes for current period, vacation hold (1 to 255 days) or indefinite hold.
Frequently used keys are conveniently located near LCD.
Configurable features allows one model to replace many different models.
-F or 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 equipment.
Easy installation, setup and system test.
System test simplifies troubleshooting and saves time by overriding time delays.
Adaptive Intelligent Recovery control brings room temperature to temperature setpoint at programmed time.
Setpoints are permanently held in memory (no batteries used) and retained during power outages.
Adjustable temperature range stops.
Description
Chronotherm IV Plus Wireless Programmable
Application
Conventional systems
Programmability
7 Day Program
Changeover
Auto/Manual Selectable
Color
Premier White®
Switch Positions (System)
HEAT-OFF-COOL-AUTO
Switch Positions (Fan)
AUTO-ON
Power Method
Battery
Terminal Designations
Wireless
Dimensions (in.)
3 3/4 in. high x 6 1/16 in. long x 1 9/16 in. deep
Dimensions (mm)
95.3 mm high x 154 mm long x 39.7 mm deep
Mounting
Horizontal
Frequency
50 Hz
Frequency
60 Hz
Setting Temperature Range (F)
Heat: 40 F to 90 F; Cool: 45 F to 99 F
Setting Temperature Range (C)
Heat: 4.5 C to 32 C; Cool: 7 C to 37 C
Differential Temperature (F)
± 1 F
Differential Temperature (C)
±0.5 C
Stages
See W8665
Sensor Element
Thermistor
Heat Current
1.5A running, 3.5A inrush
Cool Current
1.5A running, 7.5A inrush
Fan Current
0.5A running, 2.5A inrush
Transmitter Range
3 ft. minimum; 200 ft. maximum.
Transmitter Frequency
345 MHz
Operating Humidity Range (% RH)
5 to 90% RH, non-condensing
Temperature Range, Ambient (F)
40 F to 110 F
Temperature Range, Ambient (C)
4 C to 43 C
Comments
Each thermostat is encoded with unique serial numbers.
Comments
Required accessory (not included): W8665A or W8665E Receiver Module