Table of Contents
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TCONT900AC43UA
COMFORT CONTROL -
4 HEAT (GAS, OIL*, OR ELECTRIC)/3 COOL/HEAT PUMP
COMMUNICATING PROGRAMMABLE
3 WIRE HOOKUP
ALL phases of this installation must comply with NATIONAL, STATE, AND LOCAL CODES
NOTE: 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.
NOTE: Contact your local waste management authority for instructions regarding recycling and the proper disposal of
an old control.
INTRODUCTION
The TCONT900AC43UA is a communicating programmable Comfort Control that supports single-stage or multi-stage
heat/cool and heat pump applications. It is a wall mounted, low voltage (24VAC) communicating Comfort Control with
backlit LCD and a touch screen display. Room temperature is maintained by controlling the operation of heating,
cooling, heat pump, and dual fuel systems via digital, 2-way communications. The Comfort Control will communicate
with and identify all ComfortLink
Installer Setup menu. The Comfort Control features include separate heating and cooling setpoints, selectable auto or
manual changeover, menu driven 7-day programming, adjustable filter reminders, and outdoor temperature sensing.
Setup selections and diagnostics are stored indefinitely in the Comfort Control's nonvolatile memory eliminating the
need for battery backup.
Power Method
24 Vac common wire
* See System and Fan Keys section for specific information.
Accessories
Optional
BAYSEN01ATEMPA - Outdoor Sensor - For use with communicating outdoor equipment
BAYTAM00AC00UA - Telephone Access Module (TAM)
TM
II components in the system. It is easily manually configured via the user friendly
Table 1. TCONT900AC43UA Comfort Control
Changeover
Automatic or Manual
selectable
System Selection
and Fan Keys*
Fan Selection
Heat-Off-Cool-Auto
On-Auto-Circ
Emergency Heat
INSTALLER'S GUIDE
Comments
System and Fan
selection vary, based on
system type
Humidity sensor to
control dehumidification
and humidification
Pub No. 18-HD32D1-2
69-2079-05
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Table of Contents
Related Manuals for Trane TCONT900AC43UA
Summary of Contents for Trane TCONT900AC43UA
- Page 1 INTRODUCTION The TCONT900AC43UA is a communicating programmable Comfort Control that supports single-stage or multi-stage heat/cool and heat pump applications. It is a wall mounted, low voltage (24VAC) communicating Comfort Control with backlit LCD and a touch screen display. Room temperature is maintained by controlling the operation of heating, cooling, heat pump, and dual fuel systems via digital, 2-way communications.
-
Page 2: Product Specifications
TCONT900AC43UA PRODUCT SPECIFICATIONS Power Source: 18-30 VAC, Class II, 50/60Hz Storage Range: -30°F-150°F (-34.4°C-65.6°C), 5%-90% RH non-condensing Operating Temperature Range: 0°F-120°F (-17.8°C-37.2°C), 5%-90% RH non-condensing System Mode: Heat, Cool, Auto, Emergency Heat, and Off Fan Mode: On, Auto, and Circ Cooling Setpoint Temperature Range: 60°F-99°F (15.5°C-37.0°C), 1°F (0.5°C) resolution... -
Page 3: Sub-Base Installation
TCONT900AC43UA INSTALLATION Sub-base Installation The Comfort Control can be mounted horizontally on the wall or on a 2 in. by 4 in. wiring box. Position sub-base When Installing this Product... horizontally on the wall or on a 2 in. by 4 in. wiring box. - Page 4 TCONT900AC43UA CLII CLII CLII INDOOR OUTDOOR COMFORT UNIT UNIT CONTROL DATA 24VAC HOT 24VAC Common LOW VOLTAGE WIRING TO BE NO. 18 AWG MINIMUM CONDUCTOR. Fig. 2. Field Wiring Diagram, Communicating Indoor Unit - Communicating Outdoor Unit CLII SINGLE CLII...
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Page 5: Initial Power-Up
TCONT900AC43UA INITIAL POWER-UP 2. Securely tighten each terminal screw. 3. Push excess wire back in the hole. 4. Plug the hole in the wall with nonflammable insula- tion to help prevent drafts from adversely affecting Power-Up Sequence Comfort Control operation. - Page 6 TCONT900AC43UA 1. Communicating Indoor Unit - NOTE: If the system is not powered, the Real Time Clock battery life is approximately 20 weeks. Communicating Outdoor Unit The Comfort Control is designed to automatically keep For a fully communicating system, the communicating...
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Page 7: Entering Installer Setup
TCONT900AC43UA INSTALLER SETUP (ISU) The Comfort Control works with many different system types. The installer can use the Installer Setup menu to SAT A A T change factory settings to customize installations. See Table 4. Inside Set To Entering Installer Setup... - Page 8 TCONT900AC43UA Table 4. Installer Setup Menu Choices Installer Setup Factory Selection Number (ISU) Setting Option Description Comments Schedule Options 0160 0, 4 0 - Non-programmable When ISU0160 is changed 4 - 7 Day programmable from 0 (non-programmable to 4 (programmable), “Permanent Hold”...
- Page 9 TCONT900AC43UA Table 4. Installer Setup Menu Choices Installer Setup Factory Selection Number (ISU) Setting Option Description Comments Backup Heat source 0200 E, 0, 1 E - Auto-Discover HP only (Aux heat) 0 - Electric 1 - Fossil 1st Stage 0220...
- Page 10 TCONT900AC43UA Table 4. Installer Setup Menu Choices Installer Setup Factory Selection Number (ISU) Setting Option Description Comments Dual Fuel Heat Pump 0345 0, 1, 2 0 - Compressor lockout If compressor is “Failing to Control only maintain heat”, revert to aux 1 - Heat Pump Compressor heater above balance point.
- Page 11 1 - Integrated Temperature Auto- Changeover Mode Control and Humidity Control - and ITHC is enabled. ITHC (RH Setpoint) See “Dehumidification” on 4 - Trane Droop (RH page 19. Setpoint) 0381 0, 1, 2 0 - No Delay Only shown for non-variable...
- Page 12 TCONT900AC43UA Table 4. Installer Setup Menu Choices Installer Setup Factory Selection Number (ISU) Setting Option Description Comments 0387 80 - 100 Dehumidification 80 - 80% Airflow Only shown for variable Airflow 85 - 85% Airflow speed indoor units. See 90 - 90% Airflow...
- Page 13 TCONT900AC43UA Table 4. Installer Setup Menu Choices Installer Setup Factory Selection Number (ISU) Setting Option Description Comments Furnace Filter 2 0501 E, 0 E, 0 - 14 E - Auto-Discover When set to Auto-Discover Change Reminder 0 - Disabled (reminder off)
- Page 14 TCONT900AC43UA Table 4. Installer Setup Menu Choices Installer Setup Factory Selection Number (ISU) Setting Option Description Comments Minimum 0630 0 - 15 Minimum number of Compressor On Time minutes compressor is on. Clock Format 0640 12, 24 12 - 12-hour clock format...
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Page 15: Operation
TCONT900AC43UA Table 4. Installer Setup Menu Choices Installer Setup Factory Selection Number (ISU) Setting Option Description Comments Temperature Control 0690 1, 2, 3 1 - Less aggressive Applies to recovery ramp in Cool temperature and use of cooling stages control (could cause during recovery. -
Page 16: System Checkout
TCONT900AC43UA LED Indication Alert Code Numbers An LED indicator is located in the upper right corner of the The Comfort Control can receive Alert codes from any Comfort Control. It is only visible when lighted: communicating equipment via the ComfortLink II bus. -
Page 17: Advanced Features
TCONT900AC43UA Table 6. Installer System Tests Choices Installer Setup Factory Comments Selection Number Setting Option Description Installer Test Heat Test 3 0, 1, 2, 3, 0 - Heat is off Not shown if ISU 0176 is 1 - Heat stage 1 set to 0. -
Page 18: Frost Control
TCONT900AC43UA the filter timer value can be viewed at any time by simply pressing the More key until the filter timer is displayed on the screen. NOTE: Both the filter timers are auto discoverable ISU Inside Set To settings. If no ComfortLink... - Page 19 If the heat pump can not satisfy the load and the outdoor Trane Droop is a feature that cycles the compressor on to temperature is less than the compressor lockout improve indoor comfort by removing moisture from the air.
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Page 20: Troubleshooting Guide
TCONT900AC43UA 0363. If the balance point for a particular heater stage is 3. Outdoor Temperature Sensor for Control Option disabled, that heater stage will be used during every is automatically chosen in Installer Setup Number defrost cycle independent of the outdoor temperature. - Page 21 3. Check Indoor equipment. continuously. 3. Indoor equipment may need service. Fan is set to “On” but not running. 1. Trane Proprietary Humidity Verify that the Dehumidification setpoint Control. is below the actual indoor humidity. See “Trane Proprietary Humidity Control” on page 19 for additional information.
- Page 22 TCONT900AC43UA Table 7. Troubleshooting Information Symptom Possible Cause Action Heating cycle too fast or too slow The location of the control and/or Verify/adjust cycle rates - ISU 0240, (narrow or wide temperature the size of the heating system 0250, 0260.
- Page 23 TCONT900AC43UA Pub. No. 18-HD32D1-2 69-2079—05...
- Page 24 TCONT900AC43UA ® U.S. Registered Trademark • Copyright © 2008 Trane Trane • All Rights Reserved Troup Highway Pub. No. 18-HD32D1-2 Tyler, TX 75711-9010 69-2079—05 M.S. Rev. 11-08...
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