Rheem Comfort Control2 Installer's Manual
INSTALLER GUIDE
Comfort Control
featuring
2
HD Thermostat
Serial Communications
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS
CAREFULLY BEFORE INSTALLING OR OPERATING THIS
CONTROL AND SYSTEM COULD CAUSE PERSONAL INJURY
AND/OR PROPERTY DAMAGE.
INTRODUCTION TO THERMOSTAT AND COMMUNICATING
SYSTEM
This is the dealer installation and start-up instruction guide for the
Comfort Control2 HD Communicating Thermostat. It features a flexible
programming sequence for residential applications. It is designed to
control components of a 24 VAC residential ClimateTalk
TM
communicating
system consisting of gas or electric heat, heat pump, and central air
conditioning applications. The high-resolution color display offers easy
readability, intuitive programming with individual touch buttons to the
right of the screen, on-screen prompting, pop-up message alerts to
change filter, or regular servicing check-ups, and an exchangeable
faceplate. The thermostat has a USB port for contractor setup.
The thermostat’s major features include 40
o
1
resolution, 3.5-inch diagonal ¼ VGA LCD, auto configure, auto-
o
to 99oF setpoint range,
changeover, selectable continuous fan speeds, humidity control,
dehumidification control, dual fuel control, advanced diagnostics and
fault code display, advanced installer menu, simultaneous heat and
cool program storage, a four-step daily schedule sequence, energy
management recovery, filter change-out indicator, replace UV lamp
indicator, change Humidifier pad and program loss start up temperature.
Note: If system power is lost for more than eight hours, the clock will have
to be reset. Programming and configuration settings will be saved.
2 Installer’s Guide
WARNING
Thermostat installation and all
components of the control system shall
conform to Class II circuits per the NEC
code.
WARNING
To prevent electrical shock and/or
equipment damage, disconnect electric
power to system at main fuse or circuit
breaker box until installation is complete.
ATTENTION: MERCURY NOTICE
This product does not contain mercur y,
but it may replace a product that contains
mercury.
Mercury and products containing mercury
must not be discarded in household
trash. Do not touch any spilled mercury.
Wearing non-absorbent gloves, clean
up any spilled mercury and place it in a
sealed container. For proper disposal of
a product containing mercury or a sealed
container of spilled mercury, place it in a
suitable shipping container.
On the Internet, visit www.white-rodgers.
com for a location where the product
containing mercury can be sent.
Table of Contents
Installation ......................................................................................................... 4
Wiring Requirements .................................................................................... 4
Quick Installation Steps ................................................................................ 5
Installing Thermostat..................................................................................... 5
Initial Power Up ............................................................................................. 7
Check System Operation .............................................................................. 9
Thermostat Overview ....................................................................................... 11
Thermostat Setup ............................................................................................. 13
Set Current Time and Day ............................................................................ 13
Choose the System Setting .......................................................................... 14
Energy Saving Factory Pre-Program ............................................................ 14
Advanced Installer Menu ................................................................................. 15
Equipment User Menus .................................................................................... 20
Furnace User Menus .................................................................................... 22
Air Handler User Menus ............................................................................... 28
Heat Pump User Menus ............................................................................... 31
Air Conditioner User Menus .......................................................................... 35
System Fault Codes ......................................................................................... 38
Installer’s Guide 3
Installation
Thermostat
Overview
Thermostat
Setup
Advanced
Installer Menu
Equipment
User Menus
Installation
Installation
This booklet contains installation instruction and information on the
thermostat only. Separate installation instructions for the furnace or air
handler and outdoor AC condensing unit or heat pump are provided.
Thermostat
Overview
This thermostat is designed exclusively for the ClimateTalk
communicating system.
TM
Wiring Requirements
Each communicating device in the system has a four wire connection labelled (R, C,
1, 2). Each R, C, 1, and 2 terminals must be wired consistently. Maximum length from
Thermostat
Setup
the thermostat to the indoor unit is 100 feet. Maximum length from the indoor unit to the
outdoor unit is 125 feet.
Touchscreen Indoor
R
Advanced
Installer Menu
C
1
2
4 Installer’s Guide
Equipment
User Menus
24VAC (Hot)
24VAC
(Common)
Data 1
Data 2
R
C
1
2
Outdoor
R
C
1
2
Quick Installation Steps
Determine location of thermostat installation.
Mount thermostat base to wall.
Connect wires to thermostat base.
Attach thermostat to base.
Turn on power to system. Allow approximately 1 minute for the system to configure.
Set the time
Select advanced installer menu settings or use USB upload feature to install
Thermostat Configuration information
Perform thermostat/system operation checkout.
Program thermostat or accept factory programming.
Touch to run schedule.
Installing thermostat
Carefully separate the thermostat body from the thermostat base.
Place base at installation location and mark mounting hole locations on wall using
base as a template.
Move base out of the way. Drill mounting holes.
Attach base snugly to wall using two mounting screws. Levelling is for appearance
only and will not affect thermostat operation.
Installer’s Guide 5
Installation
Thermostat
Overview
Thermostat
Setup
Advanced
Installer Menu
Equipment
User Menus
Connect wires to terminal block on base.
Push excess wire into wall and plug hole with a fire resistant material (such as
fiberglass insulation) to prevent drafts from affecting thermostat operation.
Installation
Carefully line up the thermostat with the base and snap into place.
Removable Faceplate
The silver faceplate on the thermostat can
be removed and replaced with the white
Thermostat
Overview
faceplate included. To change the faceplate:
Remove faceplate by gently pulling on
the tabs behind the lower edge of the
faceplate. Lift faceplate off of thermostat.
Position faceplate on top edge of
Thermostat
Setup
thermostat.
Press on bottom of faceplate to snap faceplate
back into position.
Advanced
Installer Menu
6 Installer’s Guide
Equipment
User Menus
Tabs
Initial Power Up
Turn on AC power to the system. The thermostat will
automatically identify the communicating equipment
installed and configure for the equipment as required.
Messages at Thermostat
As equipment is found on the network, the display will
show, “device” Found. The Searching icon will show until
all equipment is found and configured. If no equipment is
found on the network after approximately five minutes, the
home screen will appear and indicate a Fault.
If the indoor unit is not detected by the network, “Check
System Fault” will be found.
Check system wiring if one of these faults occur.
Installer’s Guide 7
Installation
Thermostat
Overview
Thermostat
Setup
Advanced
Installer Menu
Equipment
User Menus
The display will change to Start-up, Hold screen showing
the actual temperature, SYSTEM position (HEAT)
mode, FAN setting (AUTO), HOLD AT with the setpoint
Installation
temperature 62 for heat or 85 for cool and real time clock
(hour, minute, AM or PM, day).
Communications Systems
Thermostat
Overview
The ClimateTalk
TM
protocol will set the identification of the individual nodes connected
to the thermostat. The Network Device display will appear during initial power up and
when a new device is found on the network.
Thermostat
Setup
Advanced
Installer Menu
8 Installer’s Guide
Equipment
User Menus
Check System Operation
Heating System (Heat Pump only/Furnace only/Dual Fuel)
1. Press SYSTEM button until Heat is displayed.
2. Press
system should begin to operate and the display will indicate Heat On.
3. If the heating system has additional stages, adjust the thermostat setting to 3°F
(2°C) or more above the actual temperature. The next heat stage will energize.
Note: To check heat pump systems, it is better to use Equipment Heat Pump User
Menu, Heat Setup to disable heat pump staging. Also, set Aux Lockout Temperature
so indoor heat is not disabled. Be sure to enable heat pump staging and set Aux
Lockout Temperature after checking system.
4. Press
should stop operating.
to adjust thermostat setting 1° above room temperature. The heating
to adjust thermostat setting below room temperature. The heating system
Installation
Thermostat
Overview
Thermostat
Setup
Cooling System
1. Press SYSTEM button until COOL is displayed.
2. Press
should begin to operate and the display will indicate Cool On.
3. If the cooling system has additional stages, adjust the temperature to 3°F (2°C) or
more below the actual. The second cool stage will energize within 10 seconds.
to adjust thermostat setting below room temperature. The cooling system
Installer’s Guide 9
Advanced
Installer Menu
Equipment
User Menus
4. Press to adjust thermostat setting above room temperature. The cooling system
should stop operating.
Installation
Fan Operation
1. Press FAN button until Fan On is displayed. The fan should begin to operate.
2. Press FAN button to change the display to Fan Auto. The fan should stop operating
as long as there is no call for heat or cool.
Thermostat
Overview
Thermostat
Setup
Advanced
Installer Menu
10 Installer’s Guide
Equipment
User Menus
Thermostat Overview
Navigating through your thermostat menus
Your thermostat features a simplified easy to understand menu structure.
Press to enter the Main Menu
Highlight a menu item using the or buttons
Enter the item by pressing
Use the or and the or to change menu items and settings
Installation
Thermostat
Overview
Thermostat
Setup
Press the Home button to display the Home Screen.
Press the Enter button to save any changes you have
made and display the previous menu item.
If no button is pressed for two minutes, you will return to the home screen
without saving changes.
Installer’s Guide 11
Advanced
Installer Menu
Equipment
User Menus
Main Menu
Press to enter menu. The Main Menu lists the menus
that access and set thermostat operating options and
Installation
programming. Use or to highlight selection
Thermostat
Overview
Thermostat
Setup
Advanced
Installer Menu
12 Installer’s Guide
Equipment
User Menus
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