International Comfort Products TSTAT0201CW Installation Manual
R
COMMUNICATING SYSTEM
Communicating Wall Control
R
With Wi--Fi
Capability
Installation Manual
TSTAT0201CW
U.S. Patent No. 7,243,004
U.S. Patent No. 7,775,452
All trademarks are the property of the respective owners.
®
is a registered trademark of the Wi-Fi Alliance Corporation.
Wi-Fi
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Safety Considerations 6...............................
Introduction
Quick Start
Set Day and Time
Set Schedule for All Days
Installation
Overview
Check Equipment
Location
Wall Control
Remote Room Sensors
Wiring Considerations
Shielded Wire
Non-communicating equipment
Mounting
Humidifier Connection
Bypass Humidifiers
Fan Powered Humidifiers
Commissioning
Communicating System Overview
Selecting Accessories
Selecting Indoor Unit
Equipment Summary
Brand Selection
Current Software Version
Software Updates
Setting Up Remote Access and Wi-Fi® Connection
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Install/Service Menus – Communicating and
Non-Communicating Mode 30..........................
Equipment Summary Menu
Service Menus
Status
Heat Stage (Furnace)
Electric Heat (Fan Coil)
Airflow CFM
Inducer RPM (Modulating furnaces only)
Blower RPM (Modulating furnaces only)
Lockout Timer
Heat Pump/AC Status
Stage: (Heat/Cool)
Defrost
Outdoor Coil Temp
Last 10 System Faults
Lifetime Run History
Cycle Counters
Run Timers
Filter Reminder
Auto Mode Enable
Room Temperature Sensing
Reversing Valve
English/Metric Display
FanonwithW
Cooling Lockout
Auxiliary Heat Lockout
Heat Pump Lockout
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Minimum Cooling Setpoint 44........................
Maximum Heating Setpoint
Outdoor Air Temperature Offset
Room Air Temperature Offset
Smart Recovery
Setpoint Deadband
Cycles Per Hour
Auto Changeover Timer
Time Between Fuel Types
Humidity Offset
Programming On/Off
Reset to Factory Defaults
Dealer Info
Service Reminder
Install/Service Menus - Communicating Equipment
Setup Menu
English/Metric Display
Airflow
Heating Airflow
Furnace / Fancoil Heating Airflow
Heat Pump Heating Airflow
Cooling Airflow
Dehum Airflow
Furnace Airflow (Capacity) Limiting
Dehum Drain
Off Delay
Low Heat Rise
Defrost Interval
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Defrost With Furnace 64........................
Quiet Shift
Zones
Zone Weighting
Zone Airflow Control
Bypass
Airflow Capacity
Damper Type
Leaving Air Sensor (LAS)
Disable Zoning
Damper Timing
HRV - Heat Recovery Maintenance
Daughter Board
Operational Information
Auto Mode
Setpoint Deadband
Offsets
Cycles Per Hour
Programming
Smart Recovery
Appendix – Wiring Diagrams
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Safety Considerations
Improper installation, adjustment, alteration, service, maintenance, 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 assistance. The qualified installer or agency must use factory-authorized 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 Electrical Code CSA C22.1.
Recognize safety information.
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
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
When you see this symbol
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highlight suggestions which will result in enhanced
installation, reliability, or operation.
Introduction
The Observer® communicating system consists of several
intelligent communicating components which includes the
Observer® Wall Control, and Observer System HVAC
equipment such as, 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 conditions, and other data are passed continually
between components over the communication bus. The result is an enhanced 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 an Observer communicating, or
a standard 24VAC controlled outdoor unit may be used.
When using conventional, single-stage outdoor units, the
communicating furnace (single-stage AC unit), or fan coil
(single-stage HP) provides the 24 volt signals needed to control them. Add the accessory daughter board to the system
to control other types of conventional outdoor units. All system components are controlled through the wall mounted
Observer Control, which replaces the conventional thermostat and provides the homeowner with a single wall control
for all features of the system.
The Observer Communicating Control with Wi-FiR network
compatibility allows connection of this system to the Internet
viaahomeWi-FiR network. See the Owner's Manual for
information on connecting the wall control to the home Wi-Fi
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network, and the MyObserverComfort web server. See later
in these Installation Instructions for information on applying
the accessory NAXA00101WA wireless access point, if the
existing home network is incompatible with this product.
The ability to remotely access and adjust the settings of
the Observer® wall control with the MyObserverComfort
web and mobile applications is dependent on the compatibility of the user’s computer/network or mobile device, the Observer wall control, and/or the MyObserverComfort web server with, and the availability of, the
user’s Internet service provider or mobile device carrier
service. International Comfort Products makes no representations or warranties, express or implied, including,
to the extent permitted by applicable law, any implied
warranty of merchantability or fitness for a particular
purpose or use, about the compatibility of the user’s
computer/network, or mobile device, with the Observer
wall control, and/or the MyObserverComfort web server,
with,andtheavailabilityof,theuser’sInternetservice
provider or mobile device carrier service, or that the
ability to remotely access and adjust the settings of the
Observer wall control will not be negatively affected by
the network-related modifications, upgrades, or similar
activity of the user’s Internet service provider or mobile
device carrier service.
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Quick Start
For first time installers, Quick Start will allow a quick start up
of the Observer® Control before learning all the details of
system 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;thenpress
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. . Under 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
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DONE to save and exit the information that you have
entered.
Set Schedule for All Days
The Observer® Control gives you flexibility in how to create
a comfort schedule. You can choose one schedule for all
days; create a schedule for your work week and the weekend; or you can make every day different.
You can create on schedule for all seven days in the week.
1. Press SETUP,thenSCHEDULE
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2. Press ▲ under “All Days”, then press EDIT.
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3. Press PERIOD;thenusethe▲ or ▼ to select the period to
change.
4. Press START;thenusethe▲ or ▼ to change the time the
corresponding period starts.
5. Press HEAT TO;thenusethe▲ or ▼ to change the desired
heating temperature for that period.
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6. Press COOL TO;thenusethe▲ or ▼ to change the desired
heating temperature for that period.
7. Press DONE after you have completed your edits.
8. Press SAVE to save your new schedule and exit (or press
CANCEL to exit without saving.)
NOTE: See Owners manual for further details of setting up
schedules.
Installation
Overview
This instruction covers installation of the Observer® Control
only. Physical installation instructions for the indoor and outdoor equipment and accessories are provided with each unit.
Setup, commissioning, operation, and troubleshooting of the
communicating system are covered only in this installation
instruction. It is the guide to connecting the system components and commissioning the system once all physical components are installed. Special screen prompts and start-up
capabilities are provided in the communicating system to
simplify and automate the initial commissioning of the system.
S Install Observer Control according to this instruction.
S Install indoor unit, outdoor unit, and accessories ac-
cording to their instructions.
S Wire complete system according to this instruction.
S Setup, commission, and operate system according
tothisinstructiontoassureasmoothandtrouble
free start--up.
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Check Equipment
Inspect equipment. File claim with shipping company prior to
installation if shipment is damaged or incomplete.
Location
All wiring must comply with national, local, and state codes.
Wall Control
The Observer® Control is the command center for the communicating system. It should be located where it is easily
accessible and visible to the adult homeowner or end user.
For accurate temperature measurement, the following
guidelines should be followed:
The Observer Control and Room Sensors SHOULD be
mounted:
Approximately 5-ft (1.5 m) from the floor.
Close to orin a frequently used room, preferably onan inside
partitioning wall.
On a section of wall without pipes or ductwork.
The Observer Control and Room Sensors SHOULD NOT be
mounted:
Close to a window, on an outside wall, or next to a door lead-
ingtotheoutside.
Exposed to direct light or heat from a lamp, sun, fireplace, or
other temperature-radiating objects which could cause a false
reading.
Close to or in direct airflow from supply registers.
In areas with poor air circulation, such as behind a door or in
an alcove.
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Remote Room Sensors
(for non-zoned system)
A Remote Room Sensor (Part No. SYSTXIIRRS01) can be
used with the Observer® Control to take the place of the
control’s internal temperature sensor (This sensor is NOT
the same as the Zone Temperature Sensor, even though the
part numbers are similar). This allows the Observer Control
to be mounted in areas with less than optimal airflow (such
as near an exterior door, window or in a closet). The remote
sensor can be wired to the terminal block connectors labeled
S1 and S2 at the control’s back-plate. The Observer Control
will automatically detect the Remote Room Sensor and ignore its internal temperature sensor. Typically, one remote
sensor is used but, multiple sensors may be used and averaged in some applications. Averaging requires a special
series-parallel wiring method with a specific number of
sensors. See Fig. 1. It is also important to note the humidity
sensor cannot be remotely located, so do not locate the Observer Control in an area where humidity sensing may not be
accurate.
Fig. 1 – Remote Room Sensor – Parallel Wiring
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Wiring Considerations
Ordinary thermostat wire is recommended. Use 22 AWG or
larger for normal wiring applications. Continuous wire lengths
over 100 ft. should use 20 AWG or larger.
NOTE: The communicating bus wiring only requires a
four-wire connection; however, it is good practice to run thermostat cable having more than four wires in the event of a
damaged or broken wire during installation.
Each communicating device in the system has a four-pin
connector. It is recommended that the following color code
be used when wiring each device:
DX+ — Green = Data A
DX- — Yellow = Data B
C — White = 24VAC (Com)
R — Red = 24VAC (Hot)
NOTE: TERMINAL MARKINGS FOR EACH COMMUNICAT-
ING SYSTEM COMPONENT MAY NOT BE IN THE SAME
ORDER. IT IS NOT MANDATORY THAT THE ABOVE COLOR CODE BE USED, BUT EACH CONNECTOR IN THE
SYSTEM MUST BE WIRED CONSISTENTLY.
A separate four-pin connector comes inside packaging and
should be used when connecting to furnace (or fan coil). Ensure connector is inserted properly into circuit board.
1. Turn off all power to equipment.
2. If an existing thermostat or control is being replaced:
a. Remove existing thermostat from wall........
b. Disconnect wires from existing thermostat........
c. Discard or recycle old thermostat........
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NOTE: Mercury is a hazardous waste, if existing control contains any mercury, it MUST be disposed of properly. The Observer® Control does not contain mercury.
3. Select Observer Control mounting plastic
4. Route wires through hole in mounting plastic. Level rear
plastic against wall (for aesthetic value only - Observer Control need not be level to operate properly) and mark wall
through two mounting holes.
5. Drill two 3/16-in (4.8 mm) mounting holes in wall where
marked.
6. Secure mounting plastic to wall using two screws and anchors provided.
7. Adjust length and routing of each wire to reach each wire
entry on the connector back-plate. Strip 1/4--in (6.4 mm) of
insulation from each wire.
8. Match and connect thermostat wires to proper terminals
on wall control back-plate. See Wiring Diagrams in
Appendix.
9. Push any excess wire into the wall. Seal hole in wall to
prevent any air leaks. Leaks can affect operation.
10. Attach Observer Control to the mounting plastic by lining
up the plastic guides on the back of the control with the
opening on the mounting plastic and push on.
11. Perform installation of all other system equipment (i.e.
humidifier, UV lights, etc.).
12. Turn on power to equipment.
NOTE: In a dual fuel installation with a non-communicating
heat pump, an OAT sensor must be installed, or the heat
pump will not run.
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Shielded Wire
If the thermostat wiring will be located near or in parallel with
high voltage wiring, cable TV or Ethernet wiring, then shieldedthermostatwirecanbeusedtoreduceoreliminatepotential interference. The shield wire should be connected to
the C terminal, or ground, at the indoor unit. The shield wire
should NOT be connected to any terminal at the wall control.
Connecting the shield to ground at both ends can cause current loops in the shield, reducing shield effectiveness.
Non-communicating equipment
The Observer® Control, when paired with the
NAXA00101DB daughter board, will operate non-communicating equipment. When the system utilizes the
NAXA00101DB daughter board, the Observer Control operates as a standard universal thermostat. See Appendix Wiring Diagrams
Mounting
First become familiar with all plastic assembly pieces shown
in Figure 2. The wall control will snap together with the
back-plate. A back-plate is supplied Figure 2. Attach
back-plate using only a small hole in the wall allowing a four
wire connection to pass through. Mount the assembly to the
back-plate.
NOTE: Once Observer Control is secured to wall with the
back-plate assembly (snapped together), care must be taken
not to bend or break the interlocking tabs when removing.
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3.90
5.20
Fig. 2 – Wall Control Assembly Pieces
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Humidifier Connection
A 24VAC bypass or fan powered humidifier may be installed.
NOTE: Do Not Use a traditional humidistat to control humidi-
fier operation. If a humidifier is installed, let the Observer®
Control operate humidifier.
Bypass Humidifiers
A bypass humidifier is normally wired directly to the furnace
or fan coil HUM and 24VAC COM terminals. The Observer®
Control will automatically energize the HUM output during a
call for humidification. See the humidifier installation instructions for the proper wiring procedure for each particular humidifier.
Fan Powered Humidifiers
Most fan powered humidifiers produce internal 24VAC in order to energize upon a switch or contact closure. For this
application, a 24VAC N.O. Isolation Relay (DPST) MUST be
used to prevent mixing the internal humidifier power with the
indoor equipment transformer. Applying 24VAC isolation relay coil to furnace or fan coil HUM and COM terminals will
allow the Observer® Control to automatically energize the
HUM output during a call for humidification. The N.O. relay
contacts will be used to energize the humidifier. See fan
powered humidifier installation instructions for more details.
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Commissioning
Overview
This section addresses initial power up (or commissioning) of
an Observer® Control. The wall control will communicate
and identify all communicating components in the system.
When the Observer Wall Control is first powered up, it will
display, Loading Graphics, then Select Function of this Unit.
Next it will search for equipment, beginning with the indoor,
then the outdoor, and remote room sensors.
When the control powers up, it will display loading graphics,
and will ask the Installer to select the function of this control..
The wall control indicates that it is now “FINDING INDOOR
EQUIPMENT”, followed by “FINDING OUTDOOR
EQUIPMENT”
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Once the indoor equipment, outdoor equipment, and zone
panel (if applicable) have been found, the Installer will be
asked to select if a humidifier is installed.
NOTE: If the communicating indoor equipment (furnace or
fan coil) cannot be found, the wall control will display the option to enter THERMOSTAT DEMO MODE or to retry the
search for equipment. The system will only operate in THER-
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MOSTAT DEMO MODE if no communicating equipment is
found.
If a communicating indoor unit is found, but a communicating
outdoor unit or relay board is not found, the installer will be
prompted to select the outdoor type; either AC, Heat Pump,
or NONE.
Selecting Accessories
Once the indoor and outdoor equipment have been found or
entered, the following screen will appear allowing the Installer to select “HUMIDIFIER INSTALLED”. Press YES or
NO to make the appropriate selection.
Selecting Indoor Unit
If there is no communicating indoor unit, the screens below
will appear. The installer should select the indoor unit type
(furnace or fan coil), then select the indoor unit stages
(single or two-stage).
NOTE: Two-stage outdoor selection is only available when a
daughter-board is installed.
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