ClimateMaster iGate ATC32U02 User manual

Installation Manual
97B0055N03
Rev.: 2/24/14
ATC32U02 iGate™Communicating,
Programmable Thermostat
Table of Contents
Caution:
These instructions are intended to be used by the installer or service personnel. End users are NOT advised to change or
modify any of these settings. Doing so may cause the equipment to stop working properly and/or may void the warranty on
both the thermostat and the equipment.
Section Title Page
Safety/Installation Considerations 3
1.0 User Menu Settings 4
2.0 Installer Menu Settings 6
2.1 Installer Menu Settings Access 6
2.2 Thermostat Configuration 6
3.0 System Configuration 7
3.1 Airflow Selection 7
3.2 Option Selection 7
3.3 Unit Configuration 8
3.4 Pump Configuration 8
3.5 Valve Configuration 9
3.6 Multi-Unit Configuration 9
4.0 Accessory Configuration 10
4.1 Air Filter 10
4.2 Humidifier 10
4.3 UV Lamp 10
Section Title Page
4.4 Air Cleaner 10
5.0 Input Dealer Information 10
6.0 Humidity Configuration 11
7.0 Temperature Algorithm 11
8.0 Demand Reduction Configuration 12
9.0 Service Mode 12
9.1 Manual Operation 12
9.2 Control Diagnostics 12
9.3 Dipswitch Configuration 13
9.4 Fault History 13
9.5 Clear Fault History 14
9.6 Multi-Unit Diagnostics 14
9.7 Multi-Unit Fault Information 15
10.0 Restore Defaults 15
11.0 Revision History 16

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ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
SAFETY CONSIDERATIONS
Improper wiring or installation may damage thermostat. Wir-
ing must conform to local and national electrical codes
 WARNING! 
WARNING! Before installing thermostat, turn off all
power to unit. There may be more than one power
disconnect. Electrical shock can cause personal
injury or death.
INSTALLATION CONSIDERATIONS
The thermostat requires no batteries. The thermostat is not
a power stealing device and MUST have both R and C termi-
nals connected. See Diagram 1.
INSTALLATION
I. THERMOSTAT LOCATION
Thermostat should be mounted:
• Approximately 5 ft. (1.5m) above 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.
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 and heat from a lamp, sun,
fireplace, or other temperature-radiating object which
may 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.
II. THERMOSTAT INSTALLATION
1. Turn off all power to unit.
2. If an existing thermostat is being replaced:
A. Remove existing thermostat from wall.
B. Disconnect wires from existing thermostat, one at
a time. Be careful not to allow wires to fall back
into the wall.
C. As each wire is disconnected, record wire color
and terminal marking.
D. Discard or recycle old thermostat.
NOTE: Mercury is a hazardous waste and MUST be dis-
posed of properly.
3. Separate the thermostat from base.
4. Route thermostat wires through hole in base. Level
base against wall (for aesthetic value only - thermo-
stat need not be leveled for proper operation) and
mark wall through 2 mounting holes.
5. Drill two 3/16-in. mounting holes in wall where
marked. (Note: Mounting holes on thermostat are
designed to fit on a horizontal J-box).
6. Secure base to wall with 2 anchors and screws
provided making sure all wires extend through hole in
base.
7. Connect wires to proper terminal of the connector
block in the thermostat.
8. Push any excess wire back into wall. Excess wire
inside the thermostat case can interfere with proper
air flow across the temperature sensor. Seal hole in
wall to prevent air leaks. Leaks can affect operation.
9. Install thermostat on base.
10. Turn on power to the unit.
III. WIRING DIAGRAMS
All excess wire should be pushed back into the wall as far as
possible. Excess wire inside the thermostat plastic case may
interfere with the air flow across the temperature sensor.
ATC32U** Thermostat
24Vac Hot
DXM2
Control
24V
Comm + A+
A+
Comm - B-
B-
OD
ID
GND
Outdoor
Sensor
(Optional)
Remote Indoor
Sensor
(Optional)
24Vac Common Gnd
R
C
Diagram 1: Thermostat Connections
Thermostat Connections
C 24V Common for Control Circuit
R 24V Supply for Control Circuit
A+ Communications (Positive)
B – Communications (Negative)
GND Ground
OD Outdoor Temperature Sensor
ID Indoor Temperature Sensor
ClimateMaster’sATC32U** Communicating, Programmable
Thermostat is the perfect compliment to a ClimateMaster
Geothermal Heat Pump System and represents a significant
advancement in thermostat communicating technology. For
homeowners, the ATC32U** provides highly customizable cli-
mate control features designed to maximize comfort and re-
duce the amount of energy consumed by the ClimateMaster
Geothermal Heat Pump System. For dealers, it represents
a significant, industry leading advancement in configuration,
monitoring and diagnostics from the thermostat. Please read
the following instructions carefully to maximize the comfort
and cost-saving potential of your ClimateMaster Geothermal
Heat Pump System.

ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
4Geothermal Heat Pump Systems
SERVICE INFORMATION
FAULT STATUS
CLEAR FAULT HISTORY
SYSTEM STATUS
SELECT OPTION
PREVIOUS
1.0 User Menu Settings
1.1 OFFSETS
If you find that the temperature displayed on the
thermostat does not accurately represent the room
temperature where the thermostat is located, this
offset function compensates for the difference.
The thermostat will apply an offset between what
temperature the thermostat is measuring versus the
temperature that is displayed.
1.1.1 TEMPERATURE OFFSET
The Temperature Offset function allows for
calibration of the temperature sensor.
Adjust the Temperature Offset settings using the
up/down arrow buttons. Press the center button to
save changes.
• Indoor Temperature (default 0°F): options:
-5°F to +5°F (in 1°F increments)
• Remote Temperature (default 0°F): options:
-5°F to +5°F (in 1°F increments)
• Outdoor Temperature (default 0°F): options:
-5°F to +5°F (in 1°F increments)
• 1st Stage (default 1°F): options: 1°F to 4°F
(in 1°F increments)
• 2nd Stage (default 1°F): options: 1°F to 4°F
(in 1°F increments)
• Aux Heat (default 1°F): options: 1°F to 4°F
(in 1°F increments)
NOTE 1: The thermostat must be configured for
Multistage by installer to access the 2nd Stage
Differential setting. The thermostat must be
configured for Auxiliary Heat by installer to access
the Auxiliary Heat Differential setting.
NOTE 2: The temperature control algorithm must
be configured for Differential control to access the
Differential settings by installer.
1.1.2 HUMIDITY OFFSET
If you find that the Humidity level displayed on
the thermostat does not accurately represent the
Humidity level of the room in which the thermostat
is located, use the Humidity Offset function to
calibrate the humidity sensor.
Adjust the Humidity Offset setting using the up/
down arrow buttons. Press the center button to
save changes.
• Indoor Humidity (default 0%): options:
-10% to +10% (in 1% increments)
1.2 AUTO CHANGEOVER TIME
When the thermostat is configured for AUTO mode,
the thermostat automatically selects heating or
cooling mode depending on the indoor temperature.
The Auto Changeover Time is the amount of time that
elapses before operation switches from heating to
cooling mode or from cooling to heating mode.
Adjust the Auto Changeover Time using the up/
down arrow buttons. Press the center button to save
changes.
• Auto Change Over Time (default 15 minutes):
options: 0 to 120 minutes (in 15 minute
increments)
1.3 DEMO MODE
Demo mode is designed to showcase heat pump
operation when the unit is connected to an above
ground water loop with the supply air being blown
directly over the water loop.
1.3.1 ENTER DEMO MODE
To enter Demo Mode, navigate to the Service
Information screen (Menu>Settings>Service
Information) then press and hold the right arrow for
5 seconds
1.3.2 DEMO MODE OPERATION
Control Demo Mode operation parameters from the
Demo Operation screen shown below.
DEMO OPERATION
OUTDOOR FAN AUTO
78% HEATING
RH 36% HUMID ON
72% AUTO
SETPOINT
HEAT 70
COOL 74
RH TEMP MODE FAN MENU

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ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
The starting mode (heating or cooling) depends
on the loop temperature at the time when Demo
Mode is entered. The unit will operate in heating or
cooling based upon the following algorithm.
1.3.3 EXITING DEMO MODE
To exit demo mode, remove power to the
thermostat.
Start in Cooling Mode Start in Heating Mode
90°F
70°F
50°F
Solid lines represent heating operation. Dashed lines represent
cooling operation.

ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
6Geothermal Heat Pump Systems
Thermostat Configuration
System Configuration
Airflow Selection
Option Selection
Unit Configuration
Pump Configuration
Valve Configuration
Accessory Configuration
Air Filter
Humidifier
UV Lamp
Air Cleaner
Input Dealer Information
Humidity Configuration
Temperature Algorithm
Demand Reduction Configuration
Service Mode
Manual Operation
Control Diagnostics
Dipswitch Configuration
Fault History
Clear Fault History
Restore Defaults
Installer Menu Settings Overview
THERMOSTAT
CONFIGURATION
SINGLE STAGE
MULTI STAGE
SELECT OPTION
PREVIOUS SAVE
THERMOSTAT
CONFIGURATION
ELECTRIC
MULTI FUEL
NO AUXILIARY HEAT
SELECT OPTION
PREVIOUS SAVE
THERMOSTAT
CONFIGURATION
AUXILIARY HEAT TO
SUPPLEMENT HEAT PUMP
AUXILIARY HEAT FOR
EMERGENCY HEAT ONLY
SELECT OPTION
PREVIOUS SAVE
2.0 Installer Menu Settings
2.1 INSTALLER MENU SETTINGS ACCESS
The Installer Settings can be accessed at any time from the
Main Operating screen by holding the up/down arrows simul-
taneously for 5 seconds while the thermostat is in OFF Mode.
2.2 THERMOSTAT CONFIGURATION
Upon initial power up, the communicating thermostat will
prompt the installer for the thermostat configuration settings.
Model number and software version of thermostat and
software version of connected DXM2 are also displayed on
this screen.
2.2.1 STAGING
Adjust the staging option using the up/down arrow buttons.
Press the center button to save changes.
• Single Stage – for control of a single stage
compressor applications
• Multi-Stage (default) – for control of multi-
stage compressor applications
2.2.2 AUXILIARY HEAT
Adjust the Auxiliary Heat options using the up/down arrow
buttons. Press the center button to save changes.
• Electric (default) – for control of a system with
electric auxiliary heat
• Multi-Fuel – for control of a system with furnace
for auxiliary heat
• No Auxiliary Heat – for control of a system with no
auxiliary heat
2.2.2.1 AUXILIARY HEAT CONFIGURATION
Select Electric Auxiliary Heat mode
• Auxiliary Heat to Supplement Pump
• Auxiliary Heat for Emergency Heat Only
INSTALLER SETTINGS
THERMOSTAT CONFIG
SYSTEM CONFIG
ACCESSORY CONFIG
INPUT DEALER INFO
HUMIDITY CONFIG
TEMPERATURE CONTROL
DEMAND REDUCTION CNFG
SERVICE MODE
SETPOINT LIMITS
RESTORE DEFAULTS
DXM2 3.3
ATC32U02 C 1.0
SELECT OPTION
PREVIOUS

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ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
AIRFLOW SELECTION
CFM
HEAT STAGE 1 600
HEAT STAGE 2 750
AUXILIARY HEAT 850
EMERGENCY HEAT 850
COOL STAGE 1 525
COOL STAGE 2 700
COOL DEHUMID 1 425
COOL DEHUMID 2 550
CONTINUOUS FAN 350
HEAT OFF DELAY 60
COOL OFF DELAY 30
PREVIOUS NEXT
NOTE: “Motorized Valve” used here refers to a two-position
motorized water valve, not to be confused with the modulating
motorized water valve found in the LOOP CONFIG.
3.0 System Configuration
Use the System Configuration option on the start-up screen
to adjust critical equipment settings.
The System Configuration information will be automatically
obtained from each communicating control in the system.
Note 1: The Airflow Selection menu (section 3.1) will not be
present if the connected communicating control system has
no blower.
Note 2: The Pump Configuration menu (section 3.4) will
not be present if the connected communicating control is
configured for No Loop Configuration (OTHER).
Note 3: The Valve Configuration menu (section 3.5) will
not be present if the connected communicating control is
configured for No Loop Configuration (OTHER).
3.1 AIRFLOW SELECTION
Adjust the airflow settings for each system operating mode
using the up/down arrow buttons. Press the center button to
select each item.
• Airflow Settings (defaults stored in control)
- valid range: obtained from control (in 25 CFM
increments)
• Blower Off Delay (default 60 seconds) – valid
range: 0 to 255 seconds (in 5 second increments)
NOTE 1: The Airflow Settings will only be present if the
connected communicating control is configured for ECM
blower.
NOTE 2: If multiple units are connected to one thermostat,
refer to section 3.6 for unit selection.
3.2 OPTION SELECTION
This option allows the configuration of heat pump options to
be modified.
Adjust the Option settings using the up/down arrow buttons.
Press the center button to select each item.
• Motorized Valve (defaults stored in control) –
valid range: Off, On “On” delays compressor start
until the valve is fully open.
• Compressor ASCD (Anti-Short Cycle Delay
(default stored in control) – valid range: 5 to 8
(in 1 minute increments)
NOTE 1: The CompressorAnti-Short Cycle Delay setting
provides equipment protection by forcing the compressor to
wait a few minutes before restarting.
NOTE 2: If multiple units are connected to one thermostat,
refer to section 3.6 for unit selection.
SYSTEM CONFIGURATION
AIRFLOW SELECTION
OPTION SELECTION
UNIT CONFIG TE026
PUMP CONFIGURATION
SELECT OPTION
PREVIOUS SAVE
INSTALLER SETTINGS
THERMOSTAT CONFIG
SYSTEM CONFIG
ACCESSORY CONFIG
INPUT DEALER INFO
HUMIDITY CONFIG
TEMPERATURE CONTROL
DEMAND REDUCTION CNFG
SERVICE MODE
SETPOINT LIMITS
RESTORE DEFAULTS
DXM2 3.3
ATC32U02 C 1.0
SELECT OPTION
PREVIOUS

ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
8Geothermal Heat Pump Systems
OPTION SELECTION
MOTORIZED VALVE OFF
COMPRESSOR ASCD 5
PREVIOUS NEXT
 CAUTION! 
CAUTION! This is a Commercial option only and does not
alter Residential unit operation.
3.3 UNIT CONFIGURATION
Adjust the Unit Configuration settings including Heat
Pump Family, Heat Pump Size, Blower Type, and Loop
Configuration using the up/down arrow buttons. Press the
center button to select each item.
• Heat Pump Family (default stored in control) –
valid range: TE, TY, TES, TEP, TRT, TSM
• Heat Pump Size (default stored in control) –
valid range: depends on Heat Pump Family setting
• Blower Type (default stored in control) – valid
range: NONE, PSC–2SPD, ECM, PSC–1SPD
• Loop Config (default stored in control) – valid
range: Other, VS PUMP, MOD VALVE
Airflow, pump and valves can be configured from ‘System
Configuration’ screen.
Select ‘VS PUMP’ when applying an internal variable speed
flow controller with other flow controllers on a single loop in
parallel.
NOTE: Refer to section 3.6.3 for multi-unit configuration
instructions.
UNIT CONFIGURATION
CURRENT CONFIG TE026
HEAT PUMP FAMILY TE
HEAT PUMP SIZE 026
BLOWER TYPE ECM
LOOP CONFIG VS PUMP
SELECT OPTION
PREVIOUS SAVE
3.4 PUMP CONFIGURATION
vFlow™ vs internal flow control pump can be controlled either
through temperature differential (Delta T) or can be set to
specific speed (fixed; % of full speed for each heat and cool
stage).
Can be configured for either single pumping or parallel
pumping.
Configure temperature differentials at the thermostat for
vFlow™ units with an internal flow control pump.
Adjust the Pump Configuration settings using the up/down
arrow buttons. Press the center button to select each item.
• Heating Delta T (default stored in control) –
valid range: 4 to 12ºF (in 1ºF increments)
• Cooling Delta T (default stored in control) –
valid range: 9 to 20ºF (in 1ºF increments)
Maximum Heat LWT (valid range based on specific model;
refer to model IOM). Minimum Cool LWT (valid range based
on specific model; refer to model IOM).
NOTE: Refer to section 3.6.3 for multi-unit configuration
instructions.
VARIABLE SPD INTERNAL
PUMP CONFIGURATION
LOOP OPTION PARALLEL
PUMP CONTROL DELTA T
HEATING DELTA T 7 F
COOLING DELTA T 10 F
MAXIMUM HEAT LWT 80 F
MINIMUM COOL LWT 40 F
PREVIOUS SELECT
To control vs pump by fixed speed, select ‘Pump Control’,
press , use down arrow to select ‘Fixed’, and press to
save.
Default stored in control. Valid range: 15% - 90% (in 1%
increments)
Heating Stage 1 Cooling Stage 1
Heating Stage 2 Cooling Stage 2
If Loop Option is set to ‘PARALLEL’, valid range changes to
50-90% (in 1% increments).

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ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
VARIABLE SPD INTERNAL
PUMP CONFIGURATION
LOOP OPTION SINGLE
PUMP CONTROL FIXED
HEATING STAGE 1 60%
COOLING STAGE 2 75%
COOLING STAGE 1 50%
COOLING STAGE 2 70%
PREVIOUS SELECT
Two
connections
on DXM2
board to allow
for multi-unit
installation
Or
3.5 VALVE CONFIGURATION
Configure temperature differentials at the thermostat for
vFlow™ units with a motorized modulating valve.
Adjust the Valve Configuration settings using the up/down
arrow buttons. Press the center button to select each item.
• Heating Delta T (default stored in control) –
valid range: 4 to 12ºF (in 1ºF increments)
• Cooling Delta T (default stored in control) –
valid range: 9 to 20ºF (in 1ºF increments)
NOTE 1: Minimum and Maximum degree values are shown
only when the control is configured with the appropriate
values.
NOTE 2: Refer to section 3.6.3 for multi-unit configuration
instructions.
MODULATING VALVE
CONFIGURATION
OFF POSITION 0.0
VALVE CONTROL DELTAT
HEATING DELTA T 7 F
COOLING DELTA T 10 F
MAXIMUM HEAT LWT 80 F
MINIMUM COOL LWT 40 F
PREVIOUS SELECT
For certain commercial multi-unit applications, the modulating
valve can be kept slightly open by choosing an off position
value between 3.3-4.0.
NOTE: Off position 0.0 means that the value is fully closed
when the unit is not operating.
3.6 MULTI-UNIT CONFIGURATION
If multiple units are connected to one ATC thermostat upon
unit start-up, the thermostat will automatically register the
serial numbers of all units connected to it.
NOTE: Multiple units may be connected directly to the ATC
thermostat or connected to one another in series, as shown
by the figure below.
3.6.1 MULTI-UNIT AIRFLOW SELECTION
In section 3.1, when an installer selects “Airflow Selection”
from the System Configuration menu, the installer may
choose the unit to configure by the last 4 digits of its serial
number from the following screen.
AIRFLOW SELECTION
TT026 S N - - - - - 1 2 3 4
TT026 S N - - - - - 5 6 7 8
TT038 S N - - - - - 9 0 1 2
PREVIOUS SELECT

ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
10 Geothermal Heat Pump Systems
OPTION SELECTION
TT026 S N - - - - - 1 2 3 4
TT026 S N - - - - - 5 6 7 8
TT038 S N - - - - - 9 0 1 2
PREVIOUS SELECT
4.0 Accessory Configuration
A service message will flash at the top of the Main screen
when a service timer expires to alert the user that it is time to
service these options. Refer to DXM2 AOM for instructions on
configuring DIP switches to configure accessories. Follow the
instructions below to set service timers. 5.0 Input Dealer Information
Enter/edit the Dealer Information settings, including Brand
Name, Model Number, Serial Number, Contractor Name, and
Contractor Phone number, using the up/down arrow buttons.
Press the center button to save changes.
4.1 AIR FILTER
This feature displays an alert to remind the user to change
the air filter after the selected time has passed.
Adjust the Air Filter Reminder settings using the up/down
arrow buttons. Press the center button to save changes.
• Cumulative Run Time (default Off) – valid range:
Off, 400 to 3600 hours (in 100 hour increments)
• Calendar Time (default Off) – valid range: Off, 3
to 48 months (in 3 month increments)
4.2 HUMIDIFIER
This feature displays an alert to remind the user to change
the humidifier pad after the selected time has passed.
Adjust the Humidifier Reminder settings using the up/down
arrow buttons. Press the center button to save changes.
• Cumulative Run Time (default Off) – valid range:
Off, 400 to 3600 hours (in 100 hour increments)
• Calendar Time (default Off) – valid range: Off, 3
to 24 months (in 3 month increments)
4.3 UV LAMP
This feature displays an alert to remind the user to change
the UV lamps after the selected time has passed.
Adjust the UV Lamp Reminder settings using the up/down
arrow buttons. Press the center button to save changes.
• Cumulative Run Time (default Off) – valid range:
Off, 400 to 3600 hours (in 100 hour increments)
• Calendar Time (default Off) – valid range: Off, 3
to 48 months (in 3 month increments)
4.4 AIR CLEANER
This feature displays an alert to remind the user to clean the
filter(s) after the selected time has passed.
Adjust the Air Cleaner Reminder settings using the up/down
arrow buttons. Press the center button to save changes.
• Cumulative Run Time (default Off) – valid range:
Off, 400 to 3600 hours (in 100 hour increments)
• Calendar Time (default Off) – valid range: Off, 3
to 24 months (in 3 month increments)
3.6.2 MULTI-UNIT OPTION SELECTION
In section 3.2, when an installer selects “Option Selection”
from the System Configuration menu, the installer may
choose the unit to configure by the last 4 digits of its serial
number from the following screen.
3.6.3 Multi-Unit, Unit, Pump, & Valve Configuration
To configure Unit, Pump, and Valve options in sections 3.3-
3.5, the thermostat must be connected to only one unit at a
time.
BRAND NAME
CLIMATEMASTER
MODEL NUMBER
TTV038AGD01ALKS
SERIAL NUMBER
1234567890
CONTRACTOR NAME
MR GEOTHERMAL
CONTRACTOR PHONE
555-1234
PREVIOUS SAVE
INSTALLER SETTINGS
THERMOSTAT CONFIG
SYSTEM CONFIG
ACCESSORY CONFIG
INPUT DEALER INFO
HUMIDITY CONFIG
TEMPERATURE CONTROL
DEMAND REDUCTION CNFG
SERVICE MODE
SETPOINT LIMITS
RESTORE DEFAULTS
DXM2 3.3
ATC32U02 C 1.0
SELECT OPTION
PREVIOUS

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6.0 Humidity Configuration
Configure humidity control settings (dehumidification/
humidification).
Adjust the Humidity Control settings using the up/down arrow
buttons. Press the center button to save changes.
• Dehumidification – This logic will communicate
a Dehumidification output when the humidity is
greater than the setpoint (acts as a dehumidistat).
The Dehumidification output will not be
communicated when the humidity is below the
setpoint.
• Humidification – This logic will communicate a
Humidification output when the humidity is less
than the setpoint (acts as a humidistat). When the
Humidification output is active, the fan output will
also be active. The Humidification output will not
be communicated when the humidity is above the
setpoint.
• Both – Incorporates both Dehumidification and
Humidification logic.
• None (default) – Dehumidification
and Humidification outputs will not be
communicated.
7.0 Temperature Algorithm
NOTE 1: The Proportional Integral options require first stage
heating or cooling to be active for a minimum of 5 minutes,
before energizing second stage when configured for multi
stage operation.
NOTE 2: The Differential option will activate first stage heating
or cooling when the temperature is more than the first stage
differential value (User Manual section 5.6.2.3), below or
above the setpoint. Second stage heating or cooling will be
activated when the temperature is more than the first and
second stage differential values combined (User Manual
section 5.6.2.3), below or above the setpoint. Third stage
heating will be activated when the temperature is more than
the first, second, and third stage differential values combined
(User Manual section 5.6.2.3), below the setpoint.
7.2 ANTICIPATOR
If you find that the thermostat is overshooting or
undershooting the temperature setpoint value, the Anticipator
setting allows for adjustment to correct the temperature
algorithm. When the Anticipator value is set to a lower
number, the thermostat becomes more sensitive and when
the Anticipator value is raised, the thermostat becomes less
sensitive. If the thermostat is overshooting the temperature
setpoint, adjust the Anticipator value up to reduce thermostat
sensitivity. If the thermostat is undershooting the temperature
setpoint, adjust the Anticipator value down to increase
thermostat sensitivity.
Adjust the Anticipator setting using the up/down arrow
buttons. Press the center button to save changes.
• Anticipator (default 3): valid range: 1 to 9
7.3 DIFFERENTIAL
The Differential adjustment will vary the number of degrees
from the setpoint before a call for heating or cooling is made.
Use this function if you find that the thermostat is starting a
call too soon/late or staging equipment up/down too quickly/
slowly. For example, with a 1 ˚F 1st stage differential and
a heating setpoint of 70˚F, your thermostat will not call for
heating until the temperature is 69˚F.
Adjust the Differential setting using the up/down arrow
buttons. Navigate between Differentials using the left/right
arrow buttons. Press the center button to save changes.
7.4 CYCLES PER HOUR
The thermostat allows the user to adjust the maximum
number of on/off cycles per hour to maintain the desired
indoor temperature.
Adjust the Cycles per Hour setting using the up/down arrow
buttons. Press the center button to save changes.
• 4 (default): operation will start no sooner than 15
minutes after the previous call was initiated
• 6: operation will start no sooner than 10 minutes
after the previous call was initiated (can provide
tighter temperature control)
TEMPERATURE CONTROL
TEMPERATURE ALGORITHM
ANTICIPATOR
DIFFERENTIAL
CYCLES PER HOUR
SMART HEAT STAGING
ELECTRIC HEAT LOCKOUT
SELECT OPTION
PREVIOUS SAVE
7.1 TEMPERATURE CONTROL
Configure the logic the thermostat uses to meet the
temperature setpoints.
• Proportional Integral (default) – This logic will
use a combination of temperature differential and
operating time to determine the appropriate heating
or cooling stages for operation (see NOTE 1).
• Proportional Integral (No Down Staging) – This
logic includes the Proportional Integral logic, but
in addition the logic keeps all active heating or
cooling stages energized until the demand is fully
satisfied (see NOTE 1).
• Differential – This logic will only use temperature
differential to determine the appropriate heating or
cooling stages for operation. This logic will keep
all active heating or cooling stages energized until
the demand is fully satisfied (see NOTE 2).

ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
12 Geothermal Heat Pump Systems
SERVICE MODE
MANUAL OPERATION
CONTROL DIAGNOSTICS
DIPSWITCH CONFIG
FAULT HISTORY
CLEAR FAULT HISTORY
SELECT OPTION
PREVIOUS SELECT
9.0 Service Mode
9.1 MANUAL OPERATION
Manual Operation mode allows the service personnel to
manually command operation for any of the thermostat
outputs, blower speed, as well as pump speed or valve
position to help troubleshoot specific components.
NOTE 1: The ECM Airflow adjustment will not be present if the
connected communicating control (DXM2) is not configured for
ECM (section 3.3).
NOTE 2: The Pump Speed adjustment will not be present
if the connected communicating control (DXM2) is not
configured for Pump (section 3.3).
NOTE 3: The Valve Position adjustment will not be present if
the connected communicating control (DXM2) is configured for
Valve (section 3.1).
NOTE 4: If multiple units are connected to one thermostat,
refer to section 9.6
9.2 CONTROL DIAGNOSTICS
Control Diagnostics mode allows the service personnel to
view the status of all physical inputs, switches, temperature
sensor readings, as well as the operational status of the
pump at the thermostat.
Navigate between diagnostic screens using the left/right
arrow buttons.
7.5 SMART HEAT STAGING
When there is auxiliary heating demand, Smart Heat Staging
defines the minimum amount of time to wait before activating
auxiliary heating. If you find that the thermostat is operating
auxiliary heating equipment too quickly/slowly, this setting
allows for adjustment to correct the temperature algorithm.
Adjust the Smart Heat Staging setting using the up/down
arrow buttons. Press the center button to save changes.
• Smart Heat Staging (default Off): options: OFF,
5 – 120 minutes (in 5 minute increments)
7.6 ELECTRIC HEAT LOCKOUT
Electric heat lockout keeps electric heat turned off if the
outdoor temperature is above the specified temperature so
as only to use electric heat when necessary.
Adjust the Electric Heat Lockout setting using the up/down
arrow buttons. Press the center button to save changes.
• Electric Heat Lockout (default Off): options:
OFF, 5 – 60°F (in 5°F increments)
NOTE: An outdoor temperature sensor must be installed for
this feature to work.
8.0 Demand Reduction Configuration
Demand Reduction is activated by an input signal at the unit
control board to reduce the electric load while peak utility
rates are high. The Demand Reduction Configuration mode
selects which of the available unit control inputs is to be
used as the activation signal. While a physical input signal is
present at the selected input, the thermostat will implement
load reduction by limiting operation or capacity. Refer to
section 5.6.9 in the user manual (part number 97B0055N02)
for more details on Demand Reduction.
Adjust the Demand Reduction Configuration setting using
the up/down arrow buttons. Press the center button to save
changes.
• No Demand Reduction (default) – Demand
Reduction operating mode will not be activated by
a DXM2 input.
• DXM2 Inputs – Assigns a DXM2 input to activate
Demand Reduction operating mode.
MANUAL OPERATING MODE
Y1 COMM OUTPUT OFF
Y2 COMM OUTPUT OFF
W COMM OUTPUT OFF
O COMM OUTPUT OFF
G COMM OUTPUT OFF
H COMM OUTPUT OFF
DH COMM OUTPUT OFF
ECM AIRFLOW 0
PUMP SPEED 0%
TEST MODE OFF
SELECT OPTION
PREVIOUS SELECT
INSTALLER SETTINGS
THERMOSTAT CONFIG
SYSTEM CONFIG
ACCESSORY CONFIG
INPUT DEALER INFO
HUMIDITY CONFIG
TEMPERATURE CONTROL
DEMAND REDUCTION CNFG
SERVICE MODE
SETPOINT LIMITS
RESTORE DEFAULTS
DXM2 3.3
ATC32U02 C 1.0
SELECT OPTION
PREVIOUS

13
ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
CONTROL DIAGNOSTICS - 2
HP SWITCH CL
LOC SWITCH CL
Y1 PHYSICAL INPUT ON
Y2 PHYSICAL INPUT OFF
W PHYSICAL INPUT OFF
O PHYSICAL INPUT ON
G PHYSICAL INPUT ON
H PHYSICAL INPUT OFF
EMERG SHUTDOWN OFF
NIGHT SETBACK OFF
OVR INPUT OFF
CONTROL VOLTAGE 26.4
PREVIOUS
CONTROL DIAGNOSTICS - 1
LT1 TEMP 38.1
LT2 TEMP 79.9
COMP DISCHARGE 157.7
ENTERING WATER 78.5
LEAVING WATER 73.3
HOT WATER EWT 121.5
LEAVING AIR 75.1
LOOP PUMP SPD 60%
LOOP PUMP WATTS 140
LOOP FLOW GPM 7.4
ECM BLOWER RPM 550
ECM TARGET CFM 800
ECM BLOWER STATIC 0.5
PREVIOUS NEXT
CONTROL CONFIGURATION
DIPSWITCH S1
1 ON UPS ENABLED
2 ON DUAL COMP STG 1
3 ON HEAT PUMP TSTAT
4 ON RV O THERMOSTAT
5 ON DEHUMID OFF
6 ON EH2 AUX HEAT
7 ON BOILERLESS
8 ON SEE DXM2 AOM
PREVIOUS NEXT
CONTROL CONFIGURATION
DIPSWITCH S2
1 ON \ ACCESSORY 1
2 ON ACCESSORY 2
3 ON/
4 ON \ ACCESSORY 2
5 ON ACTIVE W/ COMP
6 ON /
7 ON H DEHUM INPUT
8 ON FACTORY SETTING
PREVIOUS NEXT
CONTROL CONFIGURATION
DIPSWITCH S3
1 ON FACTORY SETTING
2 OFF HWG TEST OFF
3 OFF HWG SP 125
4 OFF HWG DISABLED
JW3 LT1 SETTING WELL
PREVIOUS
9.3 DIPSWITCH CONFIGURATION
Dipswitch Configuration mode allows the service personnel
to view the status of all dipswitch settings for the connected
communicating control (DXM2/AXM) at the thermostat.
Navigate between configuration screens using the left/right
arrow buttons.
NOTE 1: The unit control dipswitch settings cannot be
changed from the thermostat.
NOTE 2: If multiple units are connected to one thermostat,
refer to section 9.6.
TT038 SN - - - - - 0 1 2 3
LAST 5 FAULTS
LT1 LOW WATER TEMP
NO FAULT
NO FAULT
NO FAULT
NO FAULT
NEXT
PREVIOUS SELECT
9.4 FAULT HISTORY
Fault History mode displays the five most recent stored fault
codes for the connected communicating control (DXM2).
Navigate between control fault codes using the up/down
arrow buttons. Press the center button to view more
information about the highlighted fault code.
NOTE: If multiple units are connected to one thermostat, refer
to section 9.7.
NOTE 1: The Pump Status will not be present if the connected
communicating control (DXM2) is not configured for Pump
(section 3.3).
NOTE 2: If multiple units are connected to one thermostat,
refer to section 9.6.

ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
14 Geothermal Heat Pump Systems
FAULT I / O CONDITIONS
LT1 LOW WATER TEMP
HEAT 1 11:11 AM 11/14
TSTAT SAFETY OUTPT
CONV COMM HPS
Y1 Y1 LOC CC
Y2 Y2 CO RV
WW ACC1
OOOUTPT ACC2
GGFAN AL1
HH HWG EH1
OVR DH PUMP EH2
PREVIOUS
FAULT CONFG CONDITIONS
LT1 LOW WATER TEMP
HEAT 1 11:11 AM 11/14
S1 S2 S3
1 ON 1 ON 1 ON
2 ON 2 ON 2 OFF
3 ON 3 ON 3 OFF
4 ON 4 ON 4 OFF
5 ON 5 ON
6 ON 6 ON LT1 WELL
7 ON 7 ON LT2 WELL
8 ON 8 ON
PREVIOUS
POSSIBLE FAULT CAUSES
LOW WATER COIL TEMP
LOW WATER TEMP - HTG
LOW WATER FLOW - HTG
LOW REFRIG CHARGE - HTG
INCORRECT LT1 SETTING
BAD LT1 THERMISTOR
PREVIOUS
9.4.2 Flow Conditions
Displays detailed blower and pump speed / valve
position readings that were recorded at the time the
fault occurred.
NOTE: If multiple units are connected to one thermostat, refer
to section 9.7.
9.4.3 Input/Output Conditions
Displays the status of all physical and communicated
inputs, switches, and control outputs that were
recorded at the time the fault occurred.
NOTE: If multiple units are connected to one thermostat, refer
to section 9.7.
9.4.4 Configuration Conditions
Displays the status of all dipswitch settings that were
recorded at the time the fault occurred.
NOTE: If multiple units are connected to one thermostat, refer
to section 9.7.
9.4.5 Possible Causes
Possible causes as to why the fault occurred
NOTE: If multiple units are connected to one thermostat, refer
to section 9.7.
FAULT TEMPERATURE CONDITIONS
LT1 LOW WATER TEMP
HEAT 1 11:11 AM 11/14
LT1 TEMP 28.1
LT2 TEMP 97.3
HOT WATER EWT 121.5
COMP DISCHARGE 157.7
LEAVING AIR 92.7
LEAVING WATER 34.9
ENTERING WATER 42.1
CONTROL VOLTAGE 26.4
PREVIOUS
9.4.1 Temperature Conditions
Displays detailed temperature readings that were
recorded at the time the fault occurred.
NOTE: If multiple units are connected to one thermostat, refer
to section 9.6.
FAULT FLOW CONDITIONS
LT1 LOW WATER TEMP
HEAT 1 11:11 AM 11/14
ECM TARGET CFM 800
ECM BLOWER RPM 550
FLOW RATE GPM 6.5
PUMP SPEED 60%
PUMP WATTS 140
LOOP CONFIG VS PUMP
PREVIOUS SINGLE
FAULT CONDITION MENU
LT1 LOW WATER TEMP
HEAT 1 11:11 AM 11/14
FAULT TEMP CONDITIONS
FAULT FLOW CONDITIONS
FAULT I/O CONDITIONS
FAULT CONFIG COND
FAULT POSSIBLE CAUSES
PREVIOUS SELECT
9.5 CLEAR FAULT HISTORY
Clear Fault History will clear all fault codes stored in the
thermostat as well as the fault history in any connected
communicating controls (DXM2/AXM).

15
ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
Two
connections
on DXM2
board to allow
for multi-unit
installation
Or
9.6 MULT-UNIT DIAGNOSTICS
If multiple units are connected to one thermostat when
Manual Operation, Control Diagnostics, or Dipstick
Configuration is selected, the service personnel will see a
screen to select a specific unit by the last 4 digits of its serial
number.
NOTE: Multiple units may be connected directly to the ATC
thermostat or connected to one another in series, as shown by
the figure below.
CONTROL DIAGNOSTICS
TT026 S N - - - - - 1 2 3 4
TT026 S N - - - - - 5 6 7 8
TT038 S N - - - - - 9 0 1 2
PREVIOUS SELECT
TT038 S N - - - - - 0 1 2 3
LAST 5 FAULTS
LT1 LOW WATER TEMP
NO FAULT
NO FAULT
NO FAULT
NO FAULT
NEXT
PREVIOUS SELECT
9.7 MULT-UNIT FAULT INFO
When multiple units are connected to one thermostat,
UNLIKE Mult-Unit Diagnostics, the service personnel views
each units’ fault information by selecting the next option.
10.0 Restore Defaults
The thermostat will reset all settings, excluding the
thermostat configuration settings (section 2), to their factory
defaults.

ATC32U02 Communicating, Programmable Thermostat - IOM
Rev.: 24 Feb., 2014
16 Geothermal Heat Pump Systems
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97B0055N03
ClimateMaster works continually to improve its products. As a result, the design and specifications of each product at the time for order may be
changed without notice and may not be as described herein. Please contact ClimateMaster’s Customer Service Department at 1-405-745-6000
for specific information on the current design and specifications. Statements and other information contained herein are not express warran-
ties and do not form the basis of any bargain between the parties, but are merely ClimateMaster’s opinion or commendation of its products.
The management system governing the manufacture of ClimateMaster’s products is ISO 9001:2008 certified.
© ClimateMaster, Inc. 2012
*97B0055N03*
7300 S.W. 44th Street
Oklahoma City, OK 73179
Phone: [phone]
Fax: [phone]
climatemaster.com
Rev.: 24 Feb., 2014
ISO 9001:2008
Certified
Quality: First & Always
Date Page # Description
24 Feb. 14 All Contents Updated from ACD32U01 to ACD32U02
4 Feb. 13 8 Unit Config Section Updated
1 Oct., 12 8-9 Unit Config, Pump Config and Valve Config Sections Updated
1 Oct., 12 6 Tstat Config Section and Installer Setting Screen Updated
2 July, 12 Various Demo Mode, Auxiliary Heat Configuration and Multiple Unit
Information and Screen Shots Added
8 May, 12 All First Published
11.0 Revision History