United Technologies Electronic Controls TSTWHA01, TSTWRH01 User Manual

TSTPHA01,

TSTWHA01,

TSTPRH01,

TSTWRH01

Côr® 5

Côr® 5C

Côr® 7

Côr® 7C

Residential Thermostats

Côr® 7 non-Wi-Fi, Côr® 5 Non-Wi-Fi
Côr® 7C Wi-Fi Series Côr® 5C Wi-Fi
(Humidity Control) (No Humidity Control)

Installation Instructions

Designed in the USA.

NOTE: Read the entire instruction manual before starting the installation.

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Table of Contents

SAFETY CONSIDERATIONS ...................................................................................................... 2

INTRODUCTION .......................................................................................................................... 2

INSTALLATION CONSIDERATIONS ........................................................................................ 3

INSTALLATION ........................................................................................................................... 5

SYSTEM START-UP AND CHECKOUT .................................................................................. 27

OPERATIONAL INFORMATION.............................................................................................. 32

TROUBLESHOOTING ................................................................................................................ 35

LIST OF WIRING DIAGRAMS .................................................................................................. 38

WIRING DIAGRAMS ................................................................................................................. 39

SAFETY CONSIDERATIONS

Read and follow manufacturer instructions carefully. Follow all local electrical codes during
installation. All wiring must conform to local and national electrical codes. Improper wiring or
installation may damage the Thermostat.

Recognize safety information. This is the safety--alert symbol When you see this symbol
on the equipment and in the instruction manual, be alert to the potential for personal injury.

Understand the 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 a hazard 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 Côr 5 series and Côr 7 series thermostat models are 7-day, 5/2-day, 1-day programmable
control is a wall-mounted, low-voltage controls. The Côr 7 and Côr 7C combines temperature
and humidity control in the units. The Côr Thermostats have no need for batteries to store user­configured settings in memory. During power loss its internal memory saves settings for
unlimited time, and the clock continues to run for at least 24 hours.

A Two-Wire Relay Module option for the Côr 7 series thermostats allows them to connect to a
system using only two thermostat wires at the wall. The Two-Wire Relay Module is located near
the equipment and two wires are used between the thermostat and the Two-Wire Relay Module.

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In the Côr thermostat programmable configuration, different heating and cooling setpoints and
times are programmable for 4 periods per day or 2 periods per day. Programming can be done for
7 days per week, 5/2 days per week, or 1 day. The programmable thermostat can also be user
configured as a non-programmable thermostat. When operating as non-programmable, the Côr
Thermostat will still have temperature control and in the Côr 7 series, humidity control. The Côr
7 series Thermostat features Touch-N-Go® settings for quick and easy temperature change
without complicated programming schedules.

INSTALLATION CONSIDERATIONS

Power

This Thermostat is powered by 24VAC only. It requires 24VAC (Rh and/or Rc and C terminals)
of the low-voltage transformer to be connected to it for proper operation. It will not operate
without these 2 connections. Rh and Rc are connected via PCB breakout jumper. See Fig. 1. For
applications using two 24VAC transformers, one in the indoor unit and one in the outdoor unit,
connect the common from each to the C terminal. Connect R from the indoor unit to the Rh
terminal. Connect R from the outdoor unit to the Rc terminal. Then, break jumper on the circuit
board (fig. 1). The W and HUM signals are taken from the Rh power and the G signal is taken
from the Rc power. If Thermostat has been installed in a two--transformer application that is
later changed to a single--transformer installation, installer must install a field supplied jumper
between Rc and Rh. Depending on the installation, up to 14 wires may be required. Installation
with the Two-Wire Relay Module is recommended. Only 2 wires are required for connection
between the thermostat on the wall and the Two-Wire Relay Module. These two wires (V+ and
Vg) do not provide ordinary 24VAC. They carry a combination of power and communications
data that is unique to these products.

Fig. 1 -- PCB Breakout Jumper

Models

The Côr 5 and Côr 5C models are temperature control only and the Côr 7 and Côr 7C are
temperature and humidity control. All 4 can be configured for AC or HP, 1 or 2-speed

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compressor, and for Hybrid Heat installations. These thermostats may be configured as non­programmable if user desires.

Humidify Equipment and Connections

The humidify output connects directly to 24VAC operated humidifiers. An isolation relay may
be required when using powered humidifiers. No other connection or interlock is required. Any
of several installer-selectable operating modes are available.

Why delete the warning?
Dehumidify Equipment and Connections

On the two-wire relay option see (Insert the Title of those instructions here). The dry contact
output connects to the dehumidify input on variable—speed furnaces and fan coils. Additional
dehumidification is done by controlling the compressor. A variety of operating modes are
available. The dry contact must be configured for dehumidification in setup SW19. See Wiring
Diagrams for more information.

Outdoor Temperature Sensor (TSTATCCSEN01--B)

Outdoor air temperature sensor is a separate accessory for units installed with the Two-Wire
Relay Module. Optimum performance is obtained when an outdoor temperature sensor is used
with the Côr 7 series thermostat. Plan installation so that 2 wires can be run from the Two-Wire
Relay Module to an outdoor location, preferably on the north side of the house or refer to
Installation Instructions included with the outdoor temperature sensor for simplified connection.
The sensor can be mounted to the outdoor unit and existing control wires may be used for its
connection. Details are provided in sensor instructions.

Remote Indoor Temperature Sensor

A remote temperature sensor may be used with the Two-Wire Relay Module, where it is
desirable to install the Côr 7 series thermostat in a limited access location while measuring the
temperature in the living space. The remote room sensor may be used as a standalone or
averaged with the thermostats local sensor.

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Wiring

For all wiring applications, use 22 AWG or larger wire. Continuous wire lengths over 100 ft.
(30.5 m) should use 20 AWG or larger. Wire lengths are not to exceed 250 ft. (76 m) per run.

INSTALLATION

Installation Notes:

 No part of the Thermostat should be installed directly outdoors or in a cabinet outdoors.
 Never remove the thermostat board from the plastic housing. Doing so could warp and

damage the components on the board.

 The mounting plate should be mounted to the wall before wires are attached.
 During thermostat installation, provide sufficient excess wiring behind the mounting

plate. Coil the wiring, creating a service loop, and place in mounting box or behind the
wall to remove strain against the terminal strip. See Fig. 2.

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Fig. 2 -- Coil Excess Wiring

Carton contains the following components.

1. Thermostat (Côr 5 or 7 series)

2. Screws(2)

3. Anchors (2)

4. Quick start guide

5. Installation instructions

Thermostat Location

The thermostat should be mounted:

 Approximately 5 ft. (1.5m) from floor.
 Close to or in a frequently used room, preferably on an inside partitioning wall.
 On a section of wall without pipes or duct work.

The thermostat should NOT be mounted:

 Close to a window, on an outside wall, or next to a door leading to the outside.
 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 and return-air registers.
 In areas with poor air circulation, such as behind a door or in an alcove.

Install Thermostat

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1. Turn off all power to equipment.

2. If an existing thermostat is being replaced:
a. Remove existing Thermostat from wall.
b. Disconnect wires from existing thermostat, 1 at a time.
c. As each wire is disconnected, record wire color and terminal marking.
d. New or additional wires may be needed to accommodate C wire or added humidity
output on Côr 7 series.
e. Discard or recycle old Thermostat.

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Fig. 3 –Release Tabs to Remove Backplate

1. Use a small screwdriver to release tabs when removing the backplate (Fig. 3).

2. Route wires through large hole in mounting base. Level mounting base against wall

(for aesthetic value only—Thermostat need not be leveled for proper operation) and
mark wall through mounting holes. With the additional mounting holes you might be
able to reuse existing mounting locations.

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Wire Holes

Mounting Holes

Fig. 4 -- Backplate Mounting

3. Drill 3/16--in. mounting holes in wall where marked. Thermostat may be mounted to a

standard junction box, if desired. Hole pattern on the Thermostat mounting base matches
junction box mounting holes.

4. Secure plastic mounting base to wall with screws and anchors provided. Use 2 screws

and 2 anchors provided for a secure attachment. Make sure all wires extend through hole
in mounting base.

5. Adjust length and routing of each wire to reach proper connector block and terminal on

mounting base with 1/4--in. (6 mm) extra wire.

6. Match and connect equipment wires to proper terminals of each connector block, being

careful not to over tighten the screws.

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A07166

Fig. 5 -- Secure Wires to Terminal Strip

7. Push any excess wire into wall and against mounting base. Seal hole in wall to prevent air

leaks. Leaks can affect operation and cause incorrect temperature and/or humidity
measurement.

8. Reattach thermostat front to mounting base by first setting on at top of mounting base and

then push bottom corners of Display Module to snap into place. See Fig. 11.

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Fig. 6 -- Attach Display to Backplate

9. Turn on power to equipment. On power up, all display segments will light for 5 sec. and a two

digit code appears on the center of the display which identifies the thermostat equipment type
configuration.

a. A1 — 1--stage air conditioner with furnace or fan coil
b. H1 — 1--stage heat pump with fan coil
c. A2 — 2--stage air conditioner with furnace or fan coil
d. H2 — 2--stage heat pump with fan coil
e. h1 — Hybrid Heat system with 1--stage heat pump
f. h2 — Hybrid Heat system with 2--stage heat pump
g. HT — heating only system
h. CL — cooling only system

Set Thermostat Configuration

Configuration options enable the installer to configure the Thermostat for a particular
installation. Most are not presented to the homeowner and therefore must be properly set by the
installer. (Only those marked with an asterisk * below are available to the homeowner.) The
homeowner configurations are described in the owner’s manual. A special procedure allows
entry into the configuration mode. Selections can be made while in configuration mode.
Description of each selection and how to use the configuration mode follows (See page xx).

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There are two ways to perform Installer Setup

1. Through the menus on the thermostat.

2. Using a Smart Device to setup the thermostat.

1. Installer Setup using the thermostat

TO ENTER CONFIGURATION MODE
Press and hold MENU button for approximately 5 sec.

Note: Thermostat will automatically exit this mode if no button is pressed for 3 minutes.
Pressing the DONE (Côr 5 series) or START (Côr 7 series) button will exit configuration
mode immediately.

WHILE IN CONFIGURATION MODE
Press UP/DOWN button to select which option to MODIFY. Option will flash while it is active.
(CONFIGURATION OPTIONS – DESCRIPTION SUMMARY See page xx).

 Once option is selected press NEXT to activate option values. Option values will flash

when active.

 Use UP/DOWN to change the values of the option.
 Press DONE (Côr 5 series) or START (Côr 7 series), once all necessary options have

been modified, to exit.

Note: All changes made are saved at the time of selection and will be saved in the event
of the 3 minute time-out or when installer exits from the configuration menu.

Configuring Wi-Fi from the thermostat

From the thermostat control, press START to get to the home screen on the Côr 7C.

 Select MENU
 UP/DOWN until Wi-Fi is blinking
 Press NEXT on Côr 5C or SELECT on Côr 7C
 Press UP/DOWN to until Wi-Fi Enable is blinking

o Press Next on Côr 5C or SELECT On Côr 7C
o Press UP/DOWN to change from ENABLED Or DISABLED

 Press MENU to go back.
 Continue to use up/down arrows to scroll through the options to select Wi-Fi Scan List or

manually set the Wi-Fi Name (SSID).

Note: Wi-Fi names and passwords are case sensitive. When editing names or passwords,
extra characters can be removed by replacing them with a blank space. The alpha
numeric list is in this order when pressing the UP arrow: lowercase, uppercase, blank
space, special characters then numbers when pressing the UP arrow. Order reversed when
pressing the DOWN arrow.

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 Enter Router PSK. (Enter router password using UP/DOWN arrows and NEXT.)

Note:All other options are only required if you want to set it up differently due to specific
advanced router options.

 Press DONE on the Côr 5C to exit and save. Press START on the Côr 7C to exit and

save.

2. Configuring Thermostat and Provision Wi-Fi Using a Smart Device

From the thermostat control, press START to get to the home screen on the Côr 7C.

 Select MENU
 Press UP/DOWN until Wi-Fi is blinking
 NEXT
 UP/DOWN until 05 Easy Setup
 NEXT
 UP/DOWN to Enable Easy Setup
 Wait for about 10 seconds
 On your smartphone, look for available Wi-Fi connections
 Connect to “Cor5/7 S/N <serial number>” (Example: Cor5 S/N CEC79F2E1C2)
 Enter Password: 12345678
 You should see a Wi-Fi connection established with the thermostat.
 Open a web browser and type in the URL: mycor5.com. The Commissioning Main Page

will be displayed.

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 Wi-Fi Provisioning and Installer Setup can be done by navigating the menu.
 After all settings have been made, check “Connect to Router after Submit” and press the

SUBMIT button. The thermostat will automatically disconnect from the smartphone and
connect to the router.

Verify the thermostat is connected to the router

 Select MENU
 UP/DOWN until Wi-Fi is blinking
 NEXT
 UP/DOWN until Wi-Fi Status is blinking

o No connect – thermostat not connected to router
o To Router – thermostat is connected to router but not connected to the server
o To Server – thermostat is connected to the server

Register the thermostat (Associate the thermostat with the mobile app)

 From an Android device go to the Play Store or from an Apple device go to the App

Store. Search and Download the “Côr 5C/7C Thermostat” app.

 When you first open the app you will be asked if you have the thermostat already

running. If you haven’t gone through setup process on the thermostat, select “No”. If you
have, select “Yes” and proceed.

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 After a Wi-Fi connection has been established, it’s time to create an account to register

your Côr 5C or Côr 7C Wi-Fi, or add another thermostat to your existing account.

 Once the thermostat has been connected to your Wi-Fi network record the four digit

registration code that appears on the thermostat display.
To find this code:

o Select MENU
o UP/DOWN until Wi-Fi is blinking
o NEXT
o UP/DOWN until 06 Account PIN
o NEXT
o Thermostat will display “Requesting”
o The account pin will be displayed

 Select a new account and enter your email address and create a password (must be at least

8 characters in length), then reconfirm your password and click “Create Web Portal.”

 Enter the four digit registration code you recorded earlier and click register.

Congratulations your new Côr 5C/7C Thermostat is now connected to the mobile app! Allowing
you to control the thermostat through your smart device from almost anywhere.

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CONFIGURATION OPTIONS – DESCRIPTION SUMMARY

Only those marked with an asterisk (*) are available to the homeowner.
SW01 — Equipment Type
SW02 — Clean Filter Timer Adjustment
SW03*— Fahrenheit/Centigrade Selection
SW04 — Fan (G) on with W/W1 Selection
SW05 — Room Air Temperature Sensing (programmable models only)
SW06 — Cooling Lockout Below 55_F/13_C Selection (only available if outdoor air sensor is
present)
SW07 — Zoning
SW08 — Auxiliary Heat Lockout Temperature Setting (only available when heat pump is used
and when outdoor air temperature sensor is present)
SW09 — Heat Pump Lockout Temperature Balance Point (only available when outdoor air
temperature sensor is present)
SW10 — Reversing Valve
SW11 — Adjustable Setpoint Deadband (not available on heat only and cool only systems)
SW12 — Smart Recovery
SW13 — Room Temperature Offset Adjustment
SW14 — Humidity Offset Adjustment
SW15 — Enable Auto Mode
SW16 — Cycles Per Hour
SW17 — Time Between Stages
SW18*— Backlight Configuration
SW19 — Dry Contact
SW20 — Outdoor Air Temperature Offset Adjustment
SW21*— Keypad Lockout
SW22 — High Cool Latch Temperature
SW23 — High Heat Latch Temperature
SW24*— Programmable/Non—Programmable
SW25*— Number of Programmable Periods per Day
SW26 — Minimum Cooling Setpoint
SW27 — Maximum heating Setpoint
SW28 — UV Light Reminder
SW29 — Humidifier Pad Reminder
SW30*— Programmable Fan
SW31*— Daylight Savings Time Configuration
SW32 — Furnace Heat Staging
SW33 — Single or Two--Piece Installation
SW34 — Hybrid Heat Furnace Latch
SW35 — Advanced Smart Setback
SW40 — Fan Humidify
SW41 — Variable Speed Blower
SW42 — Variable Speed Super Dehumidification
SW43 — Intelligent Heat Staging
SW44 — Super Comfort Heat
SW99 — Reset to Factory Defaults

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Configuration Options - Selection

SW01 —Equipment Type

Range: HP2, AC2, HP1, AC1, hh1, hh2, HT, CL
HP2 — operates a two--speed heat pump with a fan coil
HP1 — operates a single--speed heat pump with a fan coil
AC2 — operates a two--speed AC with a fan coil or furnace
AC1 — operates a single--speed AC with a fan coil or furnace
Hh1 — operates a single--speed heat pump with a furnace
Hh2 — operates a two--speed heat pump with a furnace
HT — operates a heat--only system. Furnace or fan coil only; no outdoor unit.
CL — operates a cool only--system. Outdoor AC unit with an indoor fan coil with no strip

heaters.

Default is H2.

SW02 —Clean Filter Timer

Select number of months before CHECK FILTER is displayed in the text box on the screen.
With OFF selected, the reminder will never come on, disabling this feature. Time selection can
range from 1 to 9 months by selecting numbers 1 through 9. For filter time recommendations,
please consult filter’s Installation Instruction for details.

SW03 —Fahrenheit/Centigrade

Select between Fahrenheit (F) and Centigrade (C) operation.

Factory default is Fahrenheit (F).

SW04 —Fan (G) On With W/W1

This selection determines whether fan (G) output is to be On or OFF when any W/W1 (furnace
or strip heat) output is On. Most furnaces and fan coils manage their own blowers and do not
require separate G signal. For these applications, select OFF. Some auxiliary heaters require
separate G signal to turn on blower. In this case, select On. Select On for geothermal
applications.

Default is OFF

SW05 —Room Air Temperature Sensing (With Two-Wire Relay Module installed)

The remote room sensor may be installed as a single sensor or multiple sensors may be installed
for further averaging functionality. See Fig. 17.

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A09130

Fig. 17 -- Remote Room Sensor -- Parallel Wiring

This selection determines which sensor the Thermostat will use for measuring room air
temperature. Room air temperature can be sensed in one of three ways; the local sensor (L)
located on the Display Module, the remote room air sensor (r), or the average of local and remote
sensors (Lr). Settings are L, r, Lr.

Default is L.

SW06 —Cooling Lockout Below 55F /13C
This selection disables cooling when outdoor temperature is below 55F /13C. It requires an
outdoor temperature sensor or Wi-Fi connection with internet weather (internet through Wi-Fi is
required and the unit must be registered with location information entered to obtain internet
weather). Setting is not available if valid outdoor sensor is not connected or the thermostat not
receiving internet weather information. Set to OFF to allow cooling below 55F /13C. Set to On
to prevent cooling below 55F /13C.

Factory default is OFF

SW07 —Zoning

This selection should be set to On when the Thermostat is to be used as part of a zoning system.
It is assumed that the zoning equipment will take care of time guard and cycle timers. The
minimum On time is still controlled by the Thermostat.

Default is OFF

SW08 —Auxiliary Heat Lockout Temperature

This selection is available on heat pump systems with a valid outdoor temperature sensor
connected or Wi-Fi connection with internet weather setup. Available settings are: Off, 5, 10, 15,
20, 25, 30, 35, 40, 45, 50, 55.

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