Page 1
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WARNING
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▲
WARNING
!
TZONE950AC52ZA
18-HD64D1-4
ComfortLink™ II Installation Guide
Other Installation Guides may be necessary, based on system configuration.
A complete list of other optional components is shown below.
1 Control
Relay Panel
2
For use with 24V indoor systems (optional)
Zone Panel (optional)
3
Zone Sensor with Display (optional)
4
Zone Sensor (optional)
5
Zone Dampers (optional)
6
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently for the
purchaser’s purposes, the matter should be referred to your installing dealer or local distributor.
Section 1. Safety
Table of Contents
This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical
experience. Any attempt to repair a central air conditioning
product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for
the interpretation of this information, nor can it assume any
liability in connection with its use.
LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live
electrical components. Failure to follow all electrical safety
precautions when exposed to live electrical components
could result in death or serious injury.
Section 1. Safety ................................................1
Section 2. General Information .........................2
Section 3. Physical Installation ........................4
Section 4. Wiring ................................................6
Section 5. System Setup ...................................9
Section 6. Advanced Features ........................15
Section 7. Troubleshooting .............................19
NOTE: See the User’s Guide for
wireless setup information.
07/12
Page 2
Section 2. General Information
2.1
Overview
The ComfortLink II Control is a communicating
7-inch color touch screen that provides an easy-touse interface to the end user.
The Control is a communicating wall mounted
control that allows a user to manage an HVAC and
zoning system.
With the addition of the 24VAC Relay Panel, conventional HVAC systems can also be controlled.
2.2
Contents in Box
The following parts are included with this product:
1 - Control
1 - Sub-Base
4 - SnapSkru® Wall Achors
4 - 1” Screws
2.3
Specifications
Specification Description
Product Model: TZONE950AC52ZA
Product: ComfortLink II Control
Size: 7.3” width x 4.3” height x 1.2” depth
Storage Temperature -40°F to 175°F, 5% to 95% RH non-condensing
Operating Temperature: 25°F to 126°F, 5% to 90% RH non-condensing
Input Power: 24 VAC from HVAC System (Range: 18-32 VAC)
Power Consumption: 7 VA*
Wire usage: Minimum 18 gauge NEC approved control wiring
Wireless Connectivity Range (802.11 b/g): Varies with router model and placement
Communications: ComfortLink II - 3 wire connection
System Modes: Heat, Cool, Auto, Emergency Heat
Fan Modes: On, Auto, Circulate
Cooling Setpoint Temperature Range: 60°F to 99°F, 1°F resolution
Heating Setpoint Temperature Range: 55°F to 90°F, 1°F resolution
Indoor Temperature Display Range: 20°F to 119°F
Outdoor Temperature Display Range: -31°F to 119°F
Indoor Humidity Display Range: 0% to 99%, 1% resolution
Minimum Cycle Off Time Delay: Compressor: 5 minutes, Indoor Heat: 1 minute
* On every application, 24VAC loads should be reviewed to be sure the indoor unit control power transformer is adequately sized. See the
Relay Panel Installer’s Guide for guidelines.
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Page 3
Communicating System
Outdoor UnitIndoor Unit
Communicating System
24V System
Optional Wired
Remote Sensor
ZZSENSAL0400AA
Control
TZONE950AC52ZA
2.4
ComfortLink II System Connections
2.4.1 Communicating System
Control
TZONE950AC52ZA
Optional Wired
Remote Sensor
ZZSENSAL0400AA
Outdoor UnitIndoor Unit
2.4.2 24V System
Control
TZONE950AC52ZA
* Can alternatively be connected to the Relay Panel
** Can alternatively be connected to the 950 Control
Optional Wired
Remote Sensor*
ZZSENSAL0400AA
Wired Remote
Outdoor Sensor**
BAYSEN01ATEMPA
Relay Panel
Relay Panel
BAY24VRPAC52D
Indoor Unit
Outdoor Unit
18-HD64D1-4 3
Page 4
Section 3. Physical Installation
3.1
Locational Considerations
3.1.1 Temperature Sensing Considerations
The 950 Control is designed for installation in climate controlled living spaces. It is recommended to place
the unit in central locations with good circulation. Avoid exterior walls and areas near windows, doors, vents
or concealed pipes or chimneys. Important: The 950 Control utilizes a large 7” touch screen. This screen
generates heat which is vented out the top of the Control utilizing natural convection. If an air source is directed
at or from above, heat from the screen can be trapped within the Control body and can cause the indoor
temperature to be biased.
Correct
Correct
Placement
Placement
of the 950
of the 950
2 FEET
Optimum
Zone
5 FEET
Natural heat
dissapation
from the 950
Touch Screen
Onboard
Thermistor
Incorrect
Placement
of the 950
Heat from the 950 screen may be
trapped within the body of the 950
control by an external top-down airflow
source, such as a ceiling fan.
The onboard thermistor may be
biased by this heat causing the
displayed indoor temperature to be
Ceiling Fan
elevated.
3.1.2 Wireless Recption Considerations
If enabling wireless, choose a mounting location that ensures adequate signal strength.
A wireless device may have significantly different signal strengths if its position changes relative to other wireless devices. If the control shows poor signal strength, you may
be able to improve the signal strength by moving the control a short distance in any
direction.
Considerations to Maximize Signal Strength:
Wireless
• Do not mount the control more than 30 feet from the wireless router (through no
more than three interior walls).
• Do not mount the control in areas where electromagnetic emissions from other devices, appliances or
wiring can interfere with the control’s communication. (i.e. wireless phones, security systems, wireless internet cameras)
• Do not mount the control in recessed areas, near metal objects, or near structures. (i.e. doors, appliances,
entertainment centers or shelving units)
• Do not mount the control closer than 2 inches to any pipes, duct work, or other metal obstructions.
• Do not have metal obstructions, concrete or brick walls between the control and the wireless router it
will be connected to.
NOTE: See the User’s Guide for wireless setup information.
3.2
Removing Sub-Base Wall Plate
Remove sub-base plate from the Control by inserting a small flat blade
screwdriver into the notch at each of the four tabs as shown.
Gently pry the sub-base away from the Control.
NOTE: This tight fit is normal and ensures that the Control is held securely to
the sub-base when mounted on the wall.
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Page 5
Optional Hole
3.3
Mounting Sub-Base to Wall
Be sure wires are routed through the center of the
base plate and are long enough to connect to terminals.
Select and mark three holes.
NOTE: The three hole locations indicated at right
are recommended. The top location is an optional
mounting screw location.
A level may be used to ensure professional appearance.
Three (3)
Recommended
Screw
Locations
3.4
3.5
Mounting to Studs
Attach base to wall using 3 screws provided. The
locations indicated provide the most secure mounting and are recommended.
NOTE: Since moderate force is required when removing the Control from the sub-base, the sub-base
must be securely attached to the wall.
Do not overtighten screws to avoid damaging the
sub-base.
Mounting to Drywall
If mounting to drywall, supplied SnapSkru® anchors must be used to mount the Control sub-base to the wall.
These anchors will ensure that the Control is adequately supported.
NOTE: Since moderate force is required when removing the Control from the sub-base, a firmly mounted
sub-base is essential.
1) Press tip of SnapSkru® anchor into drywall using #2 Phillips
screwdriver or screw gun. Drive
anchor clockwise into drywall until
anchor stops flush with wall.
18-HD64D1-4 5
2) Place sub-base over anchor
and insert screw.
3) Tighten screw flush with subbase. Screw “pops” open anchor,
locking anchor on wall.
Do not overtighten screws to avoid
damaging the sub-base.
Page 6
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CAUTION
!
▲
WARNING
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D
R
B
Section 4. Wiring
4.1
LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live electrical components. Failure
to follow all electrical safety precautions when exposed to live electrical
components could result in death or serious injury.
Warnings
CAUTION: EQUIPMENT DAMAGE HAZARD - Improper wiring can lead
to equipment damage. Follow the terminal connection information carefully to ensure the control is wired properly. After wires are secure, bare
wires MUST NOT touch each other. See the Field Wiring Diagrams for
specific system applications.
NOTE: The maximum total cable length for the entire communicating system is 500 feet 18 AWG. The maximum distance of any single
cable from a transformer is 250 feet 18 AWG.
NOTE:
• Use 18-gauge color-coded thermostat cable for proper wiring. Shielded cable is not typically required.
• Keep this wiring at least one foot away from large inductive loads such as Electronic Air Cleaners, motors, line starters, lighting bal-
lasts and large distribution panels.
• Failure to follow these wiring practices may introduce electrical interference (noise) which can cause erratic system operation.
• All unused thermostat wire to be grounded at indoor unit chassis ground only. Shielded cable may be required if the above wiring
guidelines cannot be met. Ground only one end of the shield to the system chassis.
4.2
Power Connections
The Control is powered via 24 VAC from the indoor unit. On every application, 24VAC loads should be reviewed
to be sure the indoor unit power transformer is adequately sized. The ComfortLink II Control draws approximately
4VA more than the typical communicating Control.
4.3
Connect Wiring
Connect wiring to terminals as
shown.
Route wiring within the plastic
channel as shown so that it does
not interfere with Control when
reinstalling. Do not overlap wires.
Plug the opening with non-flammable insulation to prevent drafts from
affecting the Control.
Note: Do not pull unused
Terminal Description
conductors through the opening
due to the minimal clearance
between the sub-base and Control.
4.4
Replace unit flat onto sub-base being careful to
align unit correctly with the sub-base before applying force.
Replace Control
Control Connections
D Data
R
B 24 VAC (common)
24 VAC (hot)
Optional Connections
Terminal Description
RS Remote Sensor
RS Remote Sensor
ODT Outdoor Temperature Sensor
ODT Outdoor Temperature Sensor
Control should fit snug and not “rock” when properly installed. Check wire routing if Control is unstable.
6 18-HD64D1-4
Page 7
Red
Brown
Blue
B
D
R
W1
W2
W3
G
Y2
B
O
BK
D
Y1
R
Brown
Brown
Blue
Blue
Communicating Indoor Unit
Communicating
Outdoor Unit
Control
Red
Brown
Blue
B
D
R
W1
W2
W3
G
Y2
B
O
BK
D
Y1
R
Brown
Brown
Blue
Blue
Communicating Indoor Unit
Communicating
Outdoor Unit
Relay Panel
Red
Brown
Blue
B
D
R
BDR
Indoor Unit
24V Outdoor Unit
Relay Panel
*See Relay Panel
Installer’s Guide
for specific wiring
instructions.
Control
Control
4.5
Field Wiring
4.5.1 Communicating Indoor and Outdoor
Control
D
R
B
Brown
Red
Blue
4.5.2 24V System
Communicating Indoor Unit
Brown
D
R
BK
Y1
Y2
G
W1
W2
W3
B
O
Blue
Brown
Communicating
Outdoor Unit
Blue
BDR
Control
Relay Panel
Brown
D
R
Red
Blue
4.5.3 Communicating Indoor (excluding TAM8) with Non-Communicating Single Stage Cooling
Control
B
Communicating Indoor Unit
Relay Panel
*See Relay Panel
Installer’s Guide
for specific wiring
instructions.
Indoor Unit
24V Outdoor Unit
24V Single Stage Cooling
(excluding TAM8)
D
D
R
B
Brown
Red
Blue
R
BK
Y1
Y2
G
W1
W2
W3
Yellow
Blue
B
O
Yellow
Blue
18-HD64D1-4 7
Page 8
Red
Brown
Blue
Red
Brown
Blue
B
D
R
24V Single Stage Cooling
B
D
R
W1
W2
W3
G
Y2
B
O
BK
D
Y1
R
W1
W2
W3
G
Y2
B
O
BK
D
Y1
R
Yellow
Yellow
Blue
Blue
Brown
Brown
Blue
Blue
Communicating Indoor Unit
(excluding TAM8)
Relay Panel
Red
Brown
Blue
B
D
R
BDR
Indoor Unit
24V Outdoor Unit
Relay Panel
*See Relay Panel
Installer’s Guide
for specific wiring
instructions.
Control
Control
Red
Brown
Blue
B
D
R
24V Single Stage Cooling
Heat Pump
Outdoor Unit
W1
W2
W3
G
Y2
B
O
BK
D
Y1
R
Yellow
Yellow
Blue
Blue
Communicating Indoor Unit
(excluding TAM8)
*See Relay Panel
Installer’s Guide
for specific wiring
instructions.
Relay Panel
Red
Brown
Blue
B
D
R
BDR
Relay Panel
Variable Speed
Furnace or Air Handler
W1
W2
W3
G
Y2
B
O
BK
D
Y1
R
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Control
Control
Field Wiring (continued)
4.5.4 Communicating Indoor (excluding TAM8) with Non-Communicating Outdoor
Heat Pump or Multi-Stage AC and Relay Panel
D
R
B
Control
Brown
Red
Blue
Relay Panel
Relay Panel
BDR
Furnace or Air Handler
R
BK
D
Y1
Y2
G
W1
W2
W3
B
O
Variable Speed
Outdoor Unit
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
*See Relay Panel
Installer’s Guide
for specific wiring
instructions.
Heat Pump
4.5.5 Communicating Indoor (TAM8) with Non-Communicating
Outdoor and CCM
Control
Air Handler with CCM
Y2
D
R
B
Red
Blue
Brown
Y1
O
R
B
D
Y2 - Brown
Y1 - Yellow
O - Orange
R - Red
B - Blue
Yellow/Red
Black
2 Stage Heat Pump
(X2)
Blue
Yellow
Orange
Red
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Page 9
Section 5. System Setup
5.1
Power-Up
Communicating Equipment
Discovery mode begins when the Control is first installed and power is connected. For communicating
equipment, the Control automatically configures standard equipment parameters.
24V Equipment (Using a Relay Panel)
Equipment will need to be configured manually through the Installer’s Setup menu in the Control. See the
following section for more details.
Power-Up Sequence
When the 950 Control is connected to the Sub Base, the Control will initiate a 90-120 second power-up
sequence. During the power-up sequence, the Screen Calibration option is available for five seconds. If the
screen is not pressed within five seconds, the 950 Control will default to previously stored Screen Calibration
settings.
Note: The 950 Control is factory calibrated and can be recalibrated at any time by rebooting the Control and
selecting Screen Calibration option within the five seconds following power-up.
18-HD64D1-4 9
Page 10
5.2
Installer Setup Menus and Options
Pressing the “Standard” button allows manual selection and configuration of basic equipment components.
NOTE: In a communicating system, components will be discovered automatically, manual setup is not required.
Menu Setting Available Options
5.2.1 STANDARD Outdoor Unit Type ............................................................................ None
Cooling Only
Heat Pump
Outdoor Unit Stages ........................................................................ 1
2
Compressor Type ............................................................................. Single Compressor Two Stage
Two Compressor Two Stage
Indoor Unit Type ............................................................................... Electric
Gas/Oil
Hydronic
Indoor Unit Heat Stages .................................................................. None
1
2
3
Modulating
Indoor Unit Blower Type ................................................................... Variable Speed
Non-Variable Speed
Zoning .............................................................................................. Enable
Disable
The “Advanced” settings are used to fine-tune the operation of the 950 Control. Installed accessories can also be
configured in “Advanced” Settings.
5.2.2 ADVANCED
EQUIPMENT
Compressor Cooling Cycles Per Hour ............................................. 2, 3, 4, 5 or 6
1st Stage Compressor Heating Cycles Per Hour ............................. 2, 3, 4, 5 or 6
2nd Stage Compressor Heating Cycles Per Hour ........................... 2, 3, 4, 5 or 6
Compressor Heating Cycles Per Hour ............................................. 2, 3, 4, 5 or 6
1st Stage Compressor Cooling Cycles Per Hour ............................. 2, 3, 4, 5 or 6
2nd Stage Compressor Cooling Cycles Per Hour ............................ 2, 3, 4, 5 or 6
Compressor Minimum On Time - Min .............................................. 3
1st Stage Compressor Minimum On Time - Min .............................. 3
2nd Stage Compressor Minimum On Time - Min ............................. 3
Indoor Heater Cycles Per Hour ........................................................ 2, 3, 4, 5 or 6
1st Stage Indoor Heater Cycles Per Hour ........................................ 2, 3, 4, 5 or 6
2nd Stage Indoor Heater Cycles Per Hour ...................................... 2, 3, 4, 5 or 6
3rd Stage Indoor Heater Cycles Per Hour ....................................... 2, 3, 4, 5 or 6
Indoor Heater Minimum On Time - Min ............................................ 1
1st Stage Indoor Heater Minimum On Time - Min............................ 1
2nd Stage Indoor Heater Minimum On Time - Min .......................... 1
3rd Stage Indoor Heater Minimum On Time - Min ........................... 1
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Page 11
Installer Setup Menus and Options (continued)
Menu Setting Available Options
5.2.3 ADVANCED
ACCESSORIES
Filtration Type Installed .................................................................... Comm Air Cleaner
Air Cleaner
Media Filter
Number of Air Cleaners Installed ..................................................... 1, 2
Air Cleaner Power Level ................................................................... Low, Medium, High
Humidifier Installed .......................................................................... Yes, No
Humidifier Type ................................................................................ Powered/Bypass
Steam
Humidifier Control ............................................................................ RH Control
Frost Control
Humidifier Fan Action ....................................................................... Humidify without Active Heat Call
Humidify with Active Heat Call Only
Dehumidifier Installed ...................................................................... No, Yes
Dehumidifier - Select Relay Panel Aux Contacts ............................. Aux 1
Aux 2
Dehumidifier Control Options ........................................................... Stand Alone Operation
Dehumidifier Operation with Active
Dehumidifier - Run System Fan with Dehumidifier Request ............ No, Yes
UV Light Installed ............................................................................. None, Yes
Ventilation Installed .......................................................................... Yes, No
Ventilation - Select Relay Panel Aux Contacts ................................. Aux 1
Aux 2
Ventilation - Minimum Outdoor Temperature Allowed ...................... -10F - 50F
Ventilation - Maximum Outdoor Temperature Allowed ..................... 80F - 110F
Minimum Ventilation Run Time Per Hour ......................................... 0 - 60 minutes
Call for Cooling Only
5.2.4 ADVANCED
COMFORT
Enable Dehumidification .................................................................. Disable
Enable
Dehumidification Overcooling Limit - Degrees ................................. 0, 1, 2, 3
Control Response Rate ................................................................... Normal
Fast
Aggressive Recovery > 2° Setpoint Change .................................... Disable
Enable
Heating Aggressive Recovery .......................................................... Disable
Enable
Heating Aggressive Recovery - Outdoor Temperature..................... 0 to 70
Warm Air Discharge ......................................................................... Disable
Enable
18-HD64D1-4 11
Page 12
Installer Setup Menus and Options (continued)
Menu Setting Available Options
5.2.5 ADVANCED
AIRFLOW
VS Blower On Delay - Cooling ......................................................... No Delay
1 Minute @ 50%, 7.5 Minutes @ 80%
1 Minute @ 50%, 4 Minutes @ 80%
7.5 Minutes @ 80%
4 Minutes @ 80%
1 Minute @ 50%
30 Seconds @ 35%
VS Blower Off Delay - Cooling ......................................................... No Delay
1.5 Minutes @ 100%
45 Seconds @ 100%
30 Seconds @ 50%
1.5 Minutes @ 50%
3 Minutes @ 50%
30 seconds @ 35%
VS Blower On Delay - Compressor Heating .................................... No Delay
1 Minute @ 50%, 7.5 Minutes @ 80%
1 Minute @ 50%, 4 Minutes @ 80%
7.5 Minutes @ 80%
4 Minutes @ 80%
1 Minute @ 50%
30 Seconds @ 35%
VS Blower Off Delay - Compressor Heating .................................... No Delay
1.5 Minutes @ 100%
45 Seconds @ 100%
30 Seconds @ 50%
1.5 Minutes @ 50%
3 Minutes @ 50%
30 seconds @ 35%
Non VS Blower On Delay - Cooling ................................................. No Delay
15 Seconds
30 Seconds
90 Seconds
Non VS Blower Off Delay - Cooling ................................................. No Delay
30 Seconds
60 Seconds
90 Seconds
Non VS Blower On Delay - Compressor Heating ............................. No Delay
15 Seconds
30 Seconds
Non VS Blower Off Delay - Compressor Heating ............................. No Delay
30 Seconds
60 Seconds
90 Seconds
Hydronic Heat Blower On Delay ...................................................... No Delay
30 Seconds
60 Seconds
Hydronic Heat Blower Off Delay ...................................................... No Delay
30 Seconds
60 Seconds
90 Seconds
Compressor Low Stage Air Flow % - Cooling .................................. 35% - 60%
55% - 80%
Compressor Low Stage Air Flow % - Compressor Heating ............. 35% - 60%
55% - 80%
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Page 13
Installer Setup Menus and Options (continued)
Menu Setting Available Options
5.2.6 ADVANCED
SENSORS
Select Outdoor Temperature Sensor................................................ None
Sensor Wired to Control
CLII/AccuLink Outdoor Sensor
Sensor Wired to Relay Panel
Calibrate Outdoor Temperature Sensor - Degrees .......................... +/- in 5° Increments
Calibrate Indoor Temperature Sensor - Degrees ............................. Zone X in +/- 5° Increments
Calibrate RH Sensor ........................................................................ Zone X in +/- 5° Increments
Thermostat Humidity Sensor ........................................................... Disable
Enable
5.2.7 ADVANCED
ZONING
Damper Travel Time ......................................................................... 15 - 60 Seconds
Auto Detect Damper ........................................................................ No, Yes
Detected Dampers ........................................................................... 2 - 8
Run Auto Zone Airflow Capacity ...................................................... No, Yes
Auto Zone Airflow Capacity Adjustment ........................................... Normal
More Aggressive
Less Aggressive
Airflow Capacity - % of Total ............................................................ 25% - 100%
Voting Zones .................................................................................... No, Yes
Indoor Heating Airflow Offset % (above and below cooling airflow) . -50 - +50, 0
Discharge Temperature Limit - Cooling ............................................ Normal (38), Extended (34)
Discharge Temperature Limit - Compressor Heating Only ............... Normal (116), Extended (128)
Discharge Temperature Limit - Compressor Heating w/Aux Heat .... Normal (160), Extended (170)
Heating Fuel Type ............................................................................ Gas
Oil
Discharge Temperature Limit - Gas Furnace Heating ...................... Normal (135), Extended (145)
Discharge Temperature Limit - Oil Furnace Heating ........................ Normal (160), Extended (170)
Discharge Temperature Limit - Hydronic Heating ............................ Normal (135), Extended (145)
Please refer to the Zone Panel Installer's Guide for detailed information.
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Page 14
Installer Setup Menus and Options (continued)
5.2.8 ADVANCED
LOCKOUTS
Compressor Heating Lockout .......................................................... Disable, Enable
Compressor Lockout - Outdoor Temperature ................................... 5 - 70
Auxiliary Heat Lockout ..................................................................... Disable, Enable
Auxiliary Heat Lockout - Outdoor Temperature ................................ 40 -70
Defrost Heater Balance Point (W1) ................................................. Disable, Enable
Defrost Heater Balance Point (W1) - Outdoor Temperature............. 40 - 55
Defrost Heater Balance Point (W2) ................................................. Disable, Enable
Defrost Heater Balance Point (W2) - Outdoor Temperature............. 5 - 55
Defrost Heater Balance Point (W3) ................................................. Disable, Enable
Defrost Heater Balance Point (W3) - Outdoor Temperature............. 5 - 55
Compressor Cooling 1st Stage Lockout ......................................... Disable, Enable
Compressor Cooling 1st Stage Lockout - Outdoor Temperature ..... 80 - 120
Compressor Heating 1st Stage Lockout ......................................... Disable, Enable
Compressor Heating 1st Stage Lockout - Outdoor Temperature ..... 0 - 50
Furnace Heating 1st Stage Lockout ................................................ Disable, Enable
Furnace Heating 1st Stage Lockout - Outdoor Temperature ........... 0 - 50
5.3
Zone Sensor Setup
The Zone Sensor screen gives the technician the ability to view and edit the sensors which are assigned to a zone. The
screen is made up of two parts:
1) Select Zone/Damper – Displays a list of Zones/Dampers and the sensors assigned
2) Available Sensors – Displays a list of available sensors which have not been assigned
The 950 Control is automatically assigned to Zone 1 unless a wired sensor is connected to the Zone 1 slot on the Zone
Panel. When a wired sensor is connected to Zone 1 slot of the Zone Panel two actions occur:
1) The wired sensor connected to Zone 1 slot is auto-enabled as Zone 1.
2) The onboard temperature sensor and onboard humidity sensor of the 950 Control is disabled
a. The onboard humidity sensor can be re-enabled by navigating to the Installer Settings > Advanced > Sensors >
Thermostat Humidity Sensor (Enable)
b. If a wired sensor was connected to Zone 1 by accident, follow the steps below to re-enable the onboard
temperature sensor of the 950 Control.
Restoring An Incorrectly Wired Zone Panel
All wired sensors are automatically associated to a Zone based on the Zone slot number to which they are connected.
This association is stored in persistent storage which is not lost during a power cycle. If a wired Zone sensor is wired to the
incorrect zone slot on the Zone Panel, perform the following steps to correct:
1) Turn power “Off” to Zone Panel.
2) Disconnect wired sensor(s) from incorrect location.
3) Turn power “On” to Zone Panel.
4) Navigate to Zone Sensor screen (Home > Service > Technician Access > Proceed > Zone Sensors)
5) Select the Zone(s) which had the incorrect sensor connected, then select the “Unassign” button on the bottom right
of screen (wired sensors which are still connected cannot be unassigned).
6) Connect wired sensor to correct Zone slot on Zone Panel.
a. To re-enable the onboard temperature sensor of the 950 Control, select Zone 1, then select “Onboard Sensor” in
the list of available sensors on the right-hand of screen and press “Assign” button.
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Page 15
Section 6. Advanced Features
Feature Description
The 1-Touch Presets allows for an immediate change to the setpoint status. Set the desired
1-Touch Presets
Aggressive Recovery
Air Cleaner Mode
Alert Indication
temperature for the three status modes (Home, Away & Sleep). The control will remain in the
selected mode until another mode is selected or the program reaches a new schedule period.
Aggressive Recovery: This option disables the 10 minute inhibit anytime the control sees more
than a 2° change (such as moving from one program time frame to another). This applies to
heating & cooling modes.
Heating Aggressive Recovery: This option disables the 10 minute inhibit based on outdoor
temperature in heating mode only. The value for outdoor temperature can be set from 0°–70°.
Heating Aggressive Recovery can only be enabled if Aggressive Recovery is disabled.
There is a 10 minute “inhibit” period between first and second stage compressor as well as
compressor heating & auxiliary heating. This 10 minute inhibit period minimizes the cycling of
higher capacity when the existing capacity is sufficient to meet the demand.
There are three options when setting the Air Cleaner Mode:
Auto--the air cleaner will run whenever the blower is running.
Quick Clean--the control will energize the air cleaner at 100% output and blower at 100% air flow for
a 3-hour run cycle.
Allergy Clean--the control will energize the air cleaner at 100% output and blower at 100% air flow
for a 24-hour cycle.
System alerts will be indicated on the home screen of the control with two options: “Close” or
“Dealer Contact Information”.
• Selecting “Dealer Contact Information” will display the dealer screen.
• Selecting the “Close” option will move the alert to the top right corner of the home screen.
Pressing the icon button in the top right corner of the screen will recall the alert to the home
screen.
All alerts will remain until resolved.
Blower On / Off Delays
Calibration
Control Response Rate
Cycle Rate
Dealer Information
Duty Cycle
Critical Alert – indicates the loss of heating or cooling operation. Only critical alerts will be
displayed on the home screen. These alerts will flash red when “closed” and moved to the top right
corner of the control.
Major Alerts – indicates the loss of system functionality, but the system is still operational. Major
alerts will be displayed as a solid yellow icon in the upper right corner of the control.
Blower on / off profiles can be set independently for heating and cooling modes. There are blower
delays specific for variable speed, non variable speed and hydronic heat applications.
The sensors (indoor, remote and outdoor) can be individually calibrated for temperature and
humidity. The indoor sensors may be calibrated to plus or minus 5° or 5% in increments of 1 . The
outdoor sensor may be calibrated to plus or minus 10° in 1° increments.
This feature changes the response rate of the control. Selecting a “faster” response rate will
maintain a tighter tolerance of indoor temperatures, but increases the cycling of the system.
The cycle rate affects the cycle time of the system. With a 50% load value, a cycle rate of 3 will
allow the system to run for 10 minutes and be off for 10 minutes; completing 3 cycles in one hour. A
cycle rate of 5 would allow the system to cycle on and off at 6 minute intervals. The higher the cycle
rate, the more often the system turns on and off.
The actual amount of time the system will be “on” or “off” will be reflective in the load value of the
home. Higher load value demands will increase system run time and decrease system off time.
Lower load value demands will decrease system run time and increase system off time.
Dealer contact information, including name, address, website and multiple phone numbers may be
entered. In addition, a dealer logo (which must be named dealer.jpg) can be uploaded through the
use of an SD card. File size should not exceed 3 MB. With software version 2.1 and above, a Dealer
Code has been added. By simply typing in the dealer’s main phone number, all required fields will be
auto-populated.
When the control is requesting less capacity than the system can deliver, the control will duty cycle
to meet the required demand. The length and frequency of each duty cycle is based on the cycle rate
and current load value.
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Feature Description
There are two requirements before dehumidification is enabled:
• Dehumidification must be enabled through the Installer Setup.
• The indoor relative humidity must be above the desired setpoint.
The system will take the following actions once this condition is met:
• The blower will reduce air flow proportional to the amount of RH error. The control evaluates the
percentage of humidity error and how long the error has existed to determine the amount of air
Dehumidification
Alert Code Diagnostics
Dual Fuel Options
Emergency Heat
Equipment List
Fan Options
Help Screens
History Screen
flow reduction, up to 30% reduction.
• If overcooling is enabled, the control will engage a 1 degree of overcooling for each 10% of RH
error. A maximum amount of overcooling can be configured to 1, 2 or 3 degrees.
• Fan off delays will be eliminated.
Smart Continuous Fan
Continuous fan operation will be interrupted when indoor relative humidity exceeds desired humidity
setpoint. A humidity icon will be displayed along with the fan icon to indicate that blower on options
have been disabled due to high humidity conditions. Smart Continuous Fan will not interrupt the fan
circulate mode.
Diagnostics are displayed as current alerts (what is currently happening in the system) and alert history (what has occurred in the past, but are no longer present). The alert screen describes the alert,
when the alert happened, the severity level of the alert as well as a problem description and possible
causes to assist with troubleshooting. Up to the last 30 days are displayed.
The change over from heat pump to furnace can be set based on three options:
• Comfort–This is strictly based on indoor temperature demand. The furnace will take over when
the heat pump can no longer maintain the indoor heating demand.
• Operating Cost–The HSPF of the heat pump and AFUE of the furnace must be entered along
with cost of electricity and fuel. The control calculates an economic balance point for system
change over.
• Outdoor Temperature–The changeover from heat pump to furnace is based on outdoor temperature which can be set from 0–70° (thermal balance point).
The furnace will take over anytime the HP is unable to maintain indoor temperature, regardless of the dual fuel option chosen.
The heat pump will be disabled and the furnace / heat strips are enabled any time the control is set
to Emergency Heat.
This lists the model and serial number for all communicating components.
The model and serial numbers for non communicating components can be manually entered.
There are three options available for blower operation:
• Auto–the blower runs when there is a call for cooling or heating.
• On–the blower will run continually with a fan only call. The continuous fan speed for variable
speed motors can be adjusted from 35%–100%. A call for heating or cooling will supersede a
fan only call and the blower will run at a speed that matches the staging of the equipment.
• Circulate–this provides all the features of “fan on”, but the blower will only run a percentage of
the time when there is no call for heating or cooling. The blower can be set to circulate from
10–55 minutes of every hour.
The bottom left corner of all screens has a Help icon with a question mark. This icon provides assistance for the screen that is currently being displayed. Screens that are self explanatory will not list
additional help. Pressing the Help icon on these screens will display “No additional help available”.
The History Screen provides system cycle information. Cycle counts and run time can be viewed
for first stage and second stage compressor operation, W1 & W2 heating and defrost cycles. This
information can be viewed in a 24 hour, 1 week or 2 week period.
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Feature Description
There are two options available for humidification:
• Indoor RH setpoint—this controls the humidifier based on the desired indoor humidity setpoint
(options from 10%–45%).
• Frost Control setpoint--The control references the outdoor temperature and indoor environ-
ment to calculate the risk of frost or condensation on interior walls and windows. A scale of 0
to 10 allows for customized settings based on the insulation properties of the home. A higher
number may be selected for well insulated homes, whereas a lower number should be selected
Humidification
Installer Setup
Load Value
Lockouts
Multi Systems
Reminder Screens Reminders can be set for filters, UV lamps, humidifier pads, and various other service reminders.
Restore
SD Card Logging
Security
on poorly insulated homes. A lower number should be utilized if condensation is observed.
There are two control options for enabling humidification:
• Humidification with an active call for heat.
• Humidification without an active call for heat (control energizes blower and humidifier).
Humidification is only available when in the heating mode (or in the auto mode when the last
call was for heating). A 60 second minimum blower off delay is enforced if “steam” humidification is selected.
There are two categories for Installer Setup.
• Standard—this is the basic system settings such as heat pump or cooling only, single or multi
stage, compressor type, etc. This is the basic system set up that is self discovered in communicating mode, but requires manual input when using a Relay Panel for 24 volt configurations.
• Advanced—this provides advanced configuration of the system such as cycles per hour, mini-
mum run times, humidification and dehumidification setpoints, blower delays and temperature
lockouts to name a few of the customizable features in this set up.
Load Value is a numerical representation of the needed capacity to satisfy the setpoint. Proportional
(distance from setpoint) error plus integral (time away from setpoint) error is used to calculate load
value.
System lockouts will disable a certain function of the system under specific outdoor temperatures:
• Compressor Heating Lockout – will lockout all compressor operation below a set outdoor tem-
perature (from 5°–70°). This value must be set lower than the auxiliary heat lockout.
• Auxiliary Heating Lockout – will lock out auxiliary heat stages above a set outdoor tempera-
ture (from 40°–70°). This value must be set higher than the compressor heating lockout.
• Defrost Heater Balance Point for W1, W2 & W3 – will lock out specific auxiliary heat stages
when above a set outdoor temperature. (W1 setpoint is from 40°–55°, W2 & W3 setpoints are
from 5°–55°). This feature does not apply to dual fuel systems.
• Compressor Cooling First Stage Lockout – will lock out the first stage compressor above a
set outdoor temperature. (from 80°–120°)
• Compressor Heating First Stage Lockout – will lock out the first stage compressor below a
set outdoor temperature. (from 0°–50°)
• Furnace First Stage Heating Lockout – will lock out first stage furnace operation below a set
outdoor temperature. (from 15°–50°)
First stage lockouts are not available with zoning.
Multiple 950 Controls that manage individual systems can be linked. Multiple systems can be managed from any control location. A wireless home network is required for multi system functionality.
There are three levels of restore:
• Restore from the Setting Screen – this restores all personal configurations, such as program
schedules and home screen customization to their default setting.
• Reset Advanced Options from the Install Set Up screen – this restores all the advanced set
up selections such as system lockouts, accessories, air flow and comfort options to their default
setting.
• Restore Factory Defaults – this restores the control to its “out of the box” condition. All settings
will be set to their factory default condition.
The control has the ability to log all information to a SD Card. A typical 24 hour log will consist of 12
to 20 megabytes of information. The control will overwrite the oldest data once the card becomes full.
Security initiates a keypad lockout. The control can only be accessed by a four digit pass code which
can be configured in two different formats:
Pin Lock: When the Pin Lock is selected, the control is completely locked. The user will need to
enter a four digit password to change any setting (the default is “1234”).
Guest mode: The enabling of this mode allows a guest to change the temperature up to 5° in either
direction from setpoint and access to the weather, but cannot change the mode or any customized
settings. Note: The back door password is 9467.
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Feature Description
Network Diagnostics
Multi-System Diagnostics
Summary Table
Setpoint Dead Band This sets the temperature band between heating and cooling setpoints while in the auto mode.
Software Updates
System Report
Test Mode
Technician Access
Screens
Warm Air Discharge
Screen gives the user the ability to view the wireless connectivity of the 950 Control. Save Diagnostic
Logs is used to record wireless data for troubleshooting purposes
Screen gives the user the ability to see all 950 Controls connected within their wireless network and
their connection status.
This screen allows the technician to view the communication status of all communicating devices.
Any device which is “offline” can be removed from this screen.
The control is field software upgradable. The software can be upgraded by two methods:
SD Card upgrade - Insert SD Card with new software loaded and use the software upgrade screen
to complete the upgrade process.
Internet upgrade - Insert SD Card and use the software upgrade screen to complete the upgrade
process
The System Report Screen provides a real time in depth look at operating conditions. While similar
to the System Status screen, the system report adds additional information for service technicians.
There are two Test Modes in the control:
System Test - Ability to test heating/cooling/blower/humidifier and aux contacts for up to 30 minutes.
Damper Test - Ability to test damper operation (see Zone Panel IG for more information).
The “Technician Access” icon has a 5 second hold delay to enter the technician service screens.
After this 5 second hold delay, the technician will see a “Caution!” screen noting that only a trained
HVAC technician should proceed into this area.
Enabling Warm Air Discharge will reduce the variable speed blower air flow by 20% when in compressor heating operation. Warm air discharge only applies to compressor heating and is disabled
when hydronic, fossil fuel or electrical heat (including supplement heat) modes are activated.
18 18-HD64D1-4
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Section 7. Troubleshooting
Symptom Possible Causes Action
Control displays an alert code on
the screen.
Display will not come on Loss of 24VAC between R & B at the Control. 1) Check wiring between R & B to see if R & D, or
Indoor temperature display is
incorrect.
Indoor humidity display is incorrect.
Room temperature overshoots
when the Heat/Cool setting is
changed more than 2°.
Heating will not come on. 1) System mode is not set to Heat/Auto or set-
Cooling will not come on. 1) System mode is not set to Cool/Auto or the
Heating or Cooling is displayed,
but no warm or cool air is coming
from the registers.
Fan runs all the time 1) Fan mode is set to On, Circulate or Clean
Fan is set to ON but not running. 1) Humidity Control is engaged.
Cooling or Heating cycles too
fast or too slow (narrow or wide
temperature swings).
Heat pump is not turning on; only
furnace or electric heat strips are
running.
Cannot change system mode to
desired setting.
Screen does not respond properly to a button press
“No System Found” displayed on
the Control
A critical or major alert is present. Navigate to the Diagnostic screen on the 950
Control for a Problem Description and Possible
Cause.
B & D have been reversed.
2) Check transformer for 24VAC output.
3) Check for broken or shorted thermostat wire.
1) Indoor temperature display needs calibration.
2) Heat from touch screen is being trapped
within the thermostat body. See section 3.1 for
mounting location guidelines.
Indoor humidity display needs calibration. Calibrate humidity sensor from the Control menu.
1) Oversized heating/cooling equipment under
current conditions. Control cannot respond fast
enough to prevent overshooting.
2) Improper location of Control.
point is set too low.
2) Minimum off time delay is being enforced.
3) Heating system may require service.
setpoint is too high.
2) Minimum off time delay is being enforced.
3) Cooling system may require service.
1) There is a fan delay as the heating or cooling
equipment turns on.
2) Equipment is not working properly.
mode
2) There is a failure in the indoor unit
2) Blower motor is not functioning.
1) Check the location of the Control for drafts.
2) Cycles per hour or aggressive recovery is
improperly set.
1) Outdoor temperature is below compressor
lockout temperature setting.
2) Compressor heating lockout is enabled and
outdoor temp sensor is out of calibration or
failed.
3) The outdoor unit is not reporting (Err.126.00)
Equipment is not configured properly. Check the standard installer set up screen to
1) Screen is out of calibration.
2) Internal Control fault
Internal error Reboot the Control via onscreen button.
1) Calibrate temperature sensor from Control
menu.
2) Move thermostat away from competing air
stream or use a remote temperature sensor
1) Compare heat load calculation to equipment
chosen.
2) Relocate Control (or use remote sensor) if Control is in “dead” spot (poor or no air circulation).
1) Set mode to heat and raise the setpoint above
the room temperature.
2) Wait for 5 minutes and recheck heating equipment.
3) Check/repair system.
1) Set mode to cool and lower the setpoint below
the room temperature.
2) Wait for 5 minutes and recheck cooling equipment.
3) Check/repair system.
1) Wait a minute for blower delays and recheck
registers.
2) Check/repair system.
1) Check Control settings to see if fan is set to On,
Circulate or Clean mode.
2) Check indoor unit for failures (such as tripped
heating limit).
1) If indoor humidity is higher than desired setpoint, the blower will cycle off with the equipment.
A humidity icon will be displayed on the Fan Mode
button when the blower operation is being inhibited due too high humidity.
2) Check/repair system.
1) Seal air leaks behind Control. Relocate Control
or apply remote indoor temperature sensor.
2) Adjust cycle rates and aggressive recovery
features in the advanced installer set up.
1) Adjust the compressor lockout temperature
setting if desired.
2) Check/repair outdoor sensor or wiring.
3) Check communication status of outdoor unit.
ensure equipment is properly configured.
1) Remove Control from sub base and reset.
Follow the calibration instructions when the
Control reboots.
2) Remove Control from sub base and reset.
18-HD64D1-4 19
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6200 Troup Highway
Tyler, TX 75707
© 2012 Trane
The manufacturer has a policy of continuous product and product data
improvement and it reserves the right to change design and specifications
without notice.
Representative-only illustrations included in this document.
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