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T8665A Chronotherm IV Wireless Thermostat and Controller
ChronothermŽ 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.
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| T8665A Wireless Controller | W8665A/E Wireless thermostat | EMM-3U Multizone panel |
T8665A Thermostat $129.50 US
W8665A wireless receiver $197.50 US each
W8665E Wireless receiver $198.50 US each
EMM-3U Electronic MiniZone Panel $225.50 US each
TZ-4 TotalZoneŽ Zone Control Panel $289.50 US each
Product Specifications
| Application | Gas;Electric (Conventional) |
| Programmability | 7 Day Program |
| Changeover | Automatic |
| 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 |
| Electrical Ratings | 18 to 30 Vac |
| Frequency | 60 Hz;50 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 35 C |
| Differential Temperature (F) | 1 F |
| Differential Temperature (C) | 0.5 C |
| Stages | Staging controlled by W8665 |
| 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 |
| 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.;Required accessory (not included): W8665A or W8665E Receiver Module |
| Color | Premier WhiteŽ |
Zoning Simplified! | |
T8665A Wireless Thermostat Installation | |
T8665A Wireless Thermostat Users Guide | |
W8665 A and E Receiver Installation | |
W8665 Description
| Model | Application | Stages | Zones | Comments |
| W8665A | Conventional gas, oil or electric systems. | 1H/1C | One | Use with T8665A Wireless Thermostat. |
| W8665E | Conventional gas, oil or electric systems. | 1H/1C | Up to three | Use with T8665A Wireless Thermostats.Use with EMM-3 Electronic MiniZone Panel |
| Single or multi-stage conventional or heat pump systems. | Up to 2H/2C | Use with T8665A Wireless Thermostats.Use with EMM-3U Universal Electronic MiniZone Panel. | ||
| 1H/1C or up to 3H/2C | Use with T8665A Wireless Thermostats. Use with TZ-4 TotalZoneŽ Zone Control Pane**. |
EMMU Specification
| Application | Zoning |
| Number of Zones | 3 Zone |
| Heat Pump Compatible | Yes |
| Stages | 2H/2C |
| Auto Changeover | Yes |
| Compatible with Supply Air Sensor | Yes |
| Emergency Heat Switch | Yes |
| Resettable Fuse | Yes |
| Individual Zone Fan Control | Yes |
| LEDs | Yes |
EMMU Specification | |
TZ4 Specification
| Description | Four zones at price of three. Dual-fuel capacity for add-on heat pump applications. Compatible with multi-stage and heat pump thermostats. Expandable using TotalZoneŽ Add-A-ZoneŽ Panels. Controls up to 28 zones. Uses any Honeywell four-wire thermostat to control any equipment including T8611G2051 Heat Pump Thermostats and Honeywell Multistage Thermostats. Controls additional stages of heating and cooling based on: Time, adjustable from 5 to 30 minutes. Percent of zones calling. Multi-stage or heat pump thermostats. Built-in Emergency Heat switch eliminates need for expensive heat pump thermostat on each zone. Zone-A-LoneŽ allows zone 1 thermostat to set back all zones during unoccupied periods. When opposite calls exist, TZ panel services mode calling first and either satisfies call within 20 minutes or drops it and switches over to opposite mode to satisfy that demand. When all calls are satisfied, TZ panel allows fan operation from any zone through Fan switch on each thermostat. Setting Fan switch to On from any thermostat turns on fan and closes damper to zones with Fan switches set to Auto. Additional features: Resettable circuit breaker protects panel. Visible LED indicators communicate operation. Adjustable stage control timer. Adjustable heating and cooling temperature limits for optional C7735A1000 Discharge Air Temperature Sensor. Adjustable purge timings. Option two transformers for power when many dampers are needed. Direct replacement for TZ-3. |
| Number of Zones | 4 Zones, Expandable to 32 |
| Heat Pump Compatible | Yes |
| Stages | 3H/2C |
| Auto Changeover | Yes |
| Compatible with Supply Air Sensor | Yes |
| Emergency Heat Switch | Yes |
| Resettable Fuse | Yes |
| Individual Zone Fan Control | Yes |
| LEDs | Yes |
TZ4 Specification | |
Email: help@thermostatshop.com
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SaffCo LLC. All rights reserved.
