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T P --- P R H --- A , T P --- N R H --- A  
PerformancetSeries  
Edger Thermidistatt Control  
Installation Instructions  
A07049  
A07048  
Programmable Control  
Non --- Programmable Control  
NOTE: Read the entire instruction manual before starting the installation.  
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TABLE OF CONTENTS  
PAGE  
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
SYSTEM START -- UP AND CHECKOUT . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
OPERATIONAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54  
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61  
THERMIDISTAT CONTROL CONFIGURATION RECORD . . . . . . . . . . . 81  
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 Thermidistat Control.  
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.  
2
INTRODUCTION  
Carrier’s 7 -- day, 5/2 -- day, 1 -- day programmable and non -- programmable  
Performance Series Thermidistat Control is a wall -- mounted, low -- voltage  
control which combines temperature and humidity control in either a single unit  
or a two -- piece unit. In two -- piece configuration, the relays are located near the  
equipment and a two -- wire connection is used between the Display Module and  
the Equipment Control Module. Single -- piece installation requires more wiring  
and results in a higher profile. The Edger Thermidistat has no need for batteries  
to store user -- configured 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. An extension of Carrier’s proven line of thermostats; it provides  
separate setpoints for heating and cooling in addition to humidification and  
dehumidification.  
In the Edge Thermidistat Control 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 Thermidistat Control can also be user  
configured as a non -- programmable Thermidistat Control. When operating as  
non -- programmable, the Edge Thermidistat Control will still have both  
temperature and humidity control.  
The non -- programmable Thermidistat Control features Touch ’N’ Got settings  
for quick and easy temperature change without complicated programming  
schedules. The non -- programmable Edge Thermidistat Control will still have  
both temperature and humidity control. And, its Touch ’N’ Go technology  
enables the user to switch between three different user -- configurable settings  
through intuitive buttons located just below the display.  
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INSTALLATION CONSIDERATIONS  
Power  
This control 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  
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4VAC 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. The W and HUM signals are taken from the Rh  
power and the G signal is taken from the Rc power. If Thermidistat Control 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 as two -- piece unit is recommended. Only 2 wires are  
required for connection between Display Module and Equipment Control  
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.  
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A07052  
Fig. 1 -- PCB Breakout Jumper  
Models  
There are programmable and non -- programmable models for all applications.  
They can be configured for AC or HP, 1 -- or 2 -- speed compressor, and for Hybrid  
Heatt installations, allowing it to be used in place of all Carrier thermostats.  
Programmable Thermidistat Controls may be configured as non -- programmable  
if user desires.  
Humidify Equipment and Connections  
The humidify output connects directly to 24VAC operated humidifiers. No other  
connection or interlock is required. Any of several installer -- selectable operating  
modes are available.  
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WARNING  
ELECTRICAL OPERATION HAZARD  
Failure to follow this warning could result in personal injury  
or death.  
DO NOT connect furnace HUM terminal directly to  
Thermidistat Control HUM terminal. This will bypass furnace  
safety controls. See Low Voltage Wiring Diagrams and notes  
for proper connection.  
Dehumidify Equipment and Connections  
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 Option 19. See Wiring Diagrams for  
more information.  
Outdoor Temperature Sensor  
Outdoor air temperature sensor is included in the box with the Thermidistat  
Control. Optimum performance is obtained when an outdoor temperature sensor  
is used with the Thermidistat Control. Plan installation so that 2 wires can be run  
from Equipment Control 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. Sensor can be mounted to outdoor  
unit and existing control wires may be used for its connection. Details are  
provided in sensor instructions.  
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Remote Indoor Temperature Sensor  
A remote temperature sensor may be used with the programmable model, where  
it is desirable to install the Thermidistat Control in a limited access location while  
measuring the temperature in the living space. The remote room sensor may be  
used as a stand alone or average with local sensor.  
Two-Piece Thermidistat Control Configuration  
The Performance Series Thermidistat Control can be installed in one of two  
configurations. The control may be installed as a single -- piece Thermidistat  
Control or it may be split into two pieces and mounted in separate locations. As  
a single -- piece unit, all required wiring must be brought to the Equipment  
Control Module for connection to the terminal strip. In two -- piece configuration,  
the Display Module can be mounted in the living space while the Equipment  
Control Module may be mounted near the indoor furnace or fan coil. Connection  
from the Display Module to the Equipment Control Module requires only two  
wires. All other control wires are connected to the Equipment Control Module  
from the HVAC equipment. This configuration results in a slimmer display and  
locates the Equipment Control Module containing the switching relays away  
from the main living space where relay clicking will not be heard.  
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INSTALLATION  
Carton contains the following components. See Fig. 2 for TP -- PRH -- A or Fig. 3  
for TP -- NRH -- A.  
A07685  
Fig. 2 -- TP -- PRH -- A Carton Contents  
1
2
3
4
. Display Module  
. Stand -- off for Equipment Control Module  
. Outside Air Temperature Sensor, screws and pigtail.  
. Equipment Control Module  
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Fig. 3 -- TP -- NRH -- A Carton Contents  
. Display Module  
1
2
3
4
. Stand -- off for Equipment Control Module  
. Outside Air Temperature Sensor, screws and pigtail.  
. Equipment Control Module  
Thermidistat Control Location  
Thermidistat Control should be mounted:  
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Approximately 5 ft (1.5m) from floor.  
Close to or in a frequently used room, preferably on an inside parti-  
tioning wall.  
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On a section of wall without pipes or duct work.  
Thermidistat Control should NOT be mounted:  
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Close to a window, on an outside wall, or next to a door leading to the  
outside.  
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S
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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 regis-  
ters.  
In areas with poor air circulation, such as behind a door or in an al-  
cove.  
Installer should determine whether control will be installed as single -- piece or  
two -- piece. In single -- piece configuration, as many as 14 wires may need to run  
to wall mounting location for connection to the control. In two -- piece  
configuration, the Display Module and Equipment Control Module are  
connected by two wires.  
Install Thermidistat Control  
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WARNING  
ELECTRICAL OPERATION HAZARD  
Failure to follow this warning could result in personal injury  
or death.  
Before installing Thermidistat Control, turn off all power to  
equipment. There may be more than 1 power disconnect.  
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CAUTION  
UNIT DAMAGE HAZARD  
Failure to follow this caution may result in equipment damage  
or improper operation.  
Improper wiring or installation may damage Thermidistat  
Control. Check to make sure wiring is correct before  
proceeding with installation or turning on power.  
1
. Turn off all power to equipment.  
2
. If an existing Thermidistat Control or thermostat is being replaced:  
a. Remove existing control 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 added hu-  
midity outputs.  
e. Discard or recycle old control.  
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CAUTION  
ENVIRONMENTAL HAZARD  
Failure to follow this caution may result in environmental  
damage.  
Mercury is a hazardous waste. Federal regulations require that  
Mercury be disposed of properly.  
Two-Piece Installation  
The following steps should be followed for the installation of the two -- piece  
configuration.  
NOTE: The 2 -- wire pigtail is not intended to support the weight of the User  
Interface. Do not hang the User Interface from the Equipment Control Module  
screw terminals.  
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. Remove mounting plate from back of Display Module by pressing the  
two tabs on the bottom edge and pulling away. See Fig. 4 and 5.  
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Fig. 4 -- Press Tabs to Remove Backplate  
A07226  
Fig. 5 -- Take Apart  
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2
. Route wires through large hole in mounting base. Level mounting base  
against wall (for aesthetic value only—Display Module need not be lev-  
eled for proper operation) and mark wall through 2 mounting holes. See