Observer TSTAT0101SC User manual

616 01 1017 02 08/07/12
Communicating Wall Control
Installation Manual
TSTAT0101SC
U.S. Patent No. 7,243,004
U.S. Patent No. 7,775,452

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Safety Considerations 7...............................
Introduction 8.........................................
Quick Start 9.........................................
Set Day and Time 9.................................
Set Schedule for All Days 11.........................
Installation 14........................................
Overview 14.......................................
Check Equipment 15................................
Location 15........................................
Wall Control 15..................................
Remote Room Sensors 16........................
Wiring Considerations 17............................
Shielded Wire 20.................................
Noncommunicating equipment 20.................
Mounting 21.......................................
Humidifier Connection 22............................
Bypass Humidifiers 23............................
Fan Powered Humidifiers 23.......................
Commissioning 23....................................
Communicating System Overview 23..................

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Selecting Humidifier 26..............................
Selecting Indoor Unit 26.............................
Selecting Outdoor Unit 28...........................
Equipment Configuration 29..........................
Brand Selection 30.................................
Install/Service Menus – NonCommunicating Mode 30.....
Equipment Menu 32................................
Filter Reminder 33..................................
Auto Mode Enable 34...............................
Room Temperature Sensing 35......................
Reversing Valve 36.................................
English/Metric Display 37............................
Fan on with W 38...................................
Cooling Lockout 39.................................
Auxiliary Heat Lockout 40............................
Heat Pump Lockout 41..............................
Minimum Cooling Setpoint 42........................
Maximum Heating Setpoint 43........................
Outdoor Air Temperature Offset 44...................
Room Air Temperature Offset 45.....................

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Smart Recovery 46.................................
Setpoint Deadband 47..............................
Cycles Per Hour 48.................................
Auto Changeover Timer 49..........................
Time Between Fuel Types 50........................
Humidity Offset 51..................................
Programming On/Off 52.............................
Reset to Factory Defaults 53.........................
Dealer Info 54......................................
Service Reminder 55................................
Install/Service Menus – Communicating Mode 55.........
Setup Menu 55.....................................
Main Setup Menu 56.............................
Auto Mode 56.................................
Setpoint Deadband 57..........................
Offsets 57....................................
Cycles Per Hour 57............................
Programming 58...............................
Smart Recovery 58............................
English/Metric Display 58.......................

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Airflow 58.......................................
Heating Airflow 59.............................
Furnace / Fancoil Heating Airflow 59.............
Heat Pump Heating Airflow 60...................
Cooling Airflow 60.............................
Dehum Airflow 61..............................
Low Heat Rise 61..............................
Furnace Airflow (Capacity) Limiting 62............
Dehum Drain 63...............................
Off Delay 63..................................
Heat Pump/AC 64................................
Cooling Lockout 64............................
Defrost Interval 65.............................
Quiet Shift 66.................................
Defrost With Furnace 67........................
Filter Reminder 68.............................
HRV (Heat Recovery Ventilation) 69..............
System Maintenance 70..........................
Remind Owner of Routine Maintenance 70........
Service Menus 71..................................

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Status 71........................................
Heat Stage (Furnace) 71........................
Electric Heat (Fan Coil) 71......................
Airflow CFM 72................................
Inducer RPM (90% furnaces only) 72.............
Blower RPM 72................................
Lockout Timer 72..............................
Heat Pump/AC Status 72.......................
Stage: (Heat/Cool) 72..........................
Defrost 72....................................
Outdoor Coil Temp 73..........................
Last 10 System Events 73.........................
Run/Fault History 75..............................
Cycle Counters 75.............................
Run Timers 75................................
Appendix – Wiring Diagrams 75.........................

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Safety Considerations
Improper installation, adjustment, alteration, service, main
tenance, or use can cause explosion, fire, electrical shock, or
other conditions which may cause death, personal injury or
property damage. Consult a qualified installer, service
agency or your distributor or branch for information or assist
ance. The qualified installer or agency must use factoryau
thorized kits or accessories when modifying this product.
Refer to the individual instructions packaged with the kits or
accessories when installing.
Follow all safety codes. Wear safety glasses, protective
clothing, and work gloves. Have a fire extinguisher available.
Read these instructions thoroughly and follow all warnings
and cautions included in literature and attached to the unit.
Consult local building codes and the current edition of the
National Electrical Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Elec
trical Code CSA C22.1.
Recognize safety information. When you see this symbol
on the unit and in instructions or manuals, be alert to the
potential for personal injury. Understand these signal words:
DANGER, WARNING, and CAUTION. These words are
used with the safety-alert symbol. DANGER identifies the

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most serious hazards which will result in severe personal
injury or death. WARNING signifies hazards which could
result in personal injury or death. CAUTION is used to
identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.
Introduction
The communicating system consists of several intelligent
communicating components which includes the Observer
Control, variable speed furnace or fan coil, 2stage AC or
HP, which continually communicate with each other via a
fourwire communication bus. Commands, operating condi
tions, and other data are passed continually between com
ponents over the communication bus. The result is an en
hanced level of comfort, versatility, and simplicity. All
communicating furnaces or fan coils are variablespeed and
multistage for maximum flexibility, efficiency, and comfort.
They support controlled humidification, dehumidification, and
air quality control. Either a communicating, or a standard
24VAC controlled outdoor unit may be used. When using
conventional outdoor units, the communicating furnace or
fan coil provides the 24 volt signals needed to control them.
All system components are controlled through the wall

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mounted Observer Control, which replaces the conventional
thermostat and provides the homeowner with a single wall
control for all features of the system.
Quick Start
For first time installers, Quick Start will allow a quick start up
of the Observer Control before learning all the details of sys
tem operation. However, for the best possible comfort and
operation refer to the Owner’s Manual.
Set Day and Time
To set the current time and date, press SETUP; then press
TIME/DATE.

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Under date, you can select the month, day, or year buttons;
then use the ▲ and ▼ to select the appropriate date. . Un
der time, you can select the hour, minute, and am/pm; then
use the ▲ and ▼ to select the appropriate time. You also
have the option of selecting between a 12 HR or 24 HR clock
format. Finally, you can choose whether you observe day
light savings time by pressing the ON or OFF button. Press
DONE to save and exit the information that you have
entered.