Lennox P506052-01, 2P1109 User Manual

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E2009 Lennox Industries Inc.

Dallas, Texas, USA

INSTALLER’S SYSTEM SETUP GUIDE

icomfortt Thermostat

Touch Screen Programmable Communicating Thermostat

CONTROLS

506052−01

11/09

Litho U.S.A.

 

Shipping and Packing List1

1 − icomfortt Touch Screen Communicating, 7−day Programmable Thermostat

6 − Mounting Screws

6 − Wall Anchors

1 each − Installation Quick-Start Guide, Installer’s System Setup Guide, Homeowner’s Manual, Warranty card, Warranty Audit tag

*2P1109*

*P506052-01*

Table of Contents

 

icomfortt Thermostat Terms and Acronyms . . . . . . . . . . . . . . . . .

3

icomfortt Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

icomfortt Thermostat Features . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

Installing icomfortt Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

Installer setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

System settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

Setting time and date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

Add/remove/modify non−communicating devices . . . . . . . . .

9

Modify communicating device settings . . . . . . . . . . . . . . . . . .

10

Indoor air quality controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17

Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18

Access installer program from User Home screen . . . . . . . . . . . .

22

Reconfiguring a system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

Editable parameters table (user and Installer) . . . . . . . . . . . . . . . .

25

Alarm Codes and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

WARNING

Always turn off power at the main power source by switching the circuit breaker to the OFF position before installing or removing this thermostat.

All wiring must conform to local and national building and electrical codes and ordinances.

Do not switch system to cool if the outdoor temperature is below 45°F (7°C). This can damage the cooling system.

CAUTION

This is a 24VAC low−voltage thermostat. Do not install on voltages higher than 30VAC.

Do not short (jumper) across terminals on the gas valve or at the system control to test installation. This will damage the thermostat and void the warranty.

IMPORTANT

Read this manual before programming this thermostat.

Use this thermostat only as described in this manual.

506052−01 11/09

Page 2

icomfortt Thermostat Terms and Acronyms

Subnet Controller (SC): (part of the communicating thermostat) Local device that controls the system.

Subnet: A part of the communication network that contains devices to control one functional HVAC system.

RSBus − Residential Serial Bus − the means for transmitting data within the communicating system.

Controller Area Network Protocol: Rules for networking, for transmission and receipt of information between communicating systems.

Baud Rate: Maximum speed of BUS 40K baud.

Byte: 8 bits of information transmitted on the RSBus.

Integrated Furnace Control (IFC): Communicating control for furnace. IFC controls ignition, CAI, blower, and monitors all safety features in the unit.

Air Handler Control (AHC): Communicating control for air handler units. AHC controls operation of blower, heat strips, and monitors all safety features in the unit.

HP Control (Defrost Control) (UC): Communicating defrost control. UC controls low and high speed compressor operation, defrost opera-

tions, fan motor, and reversing valve and monitors all safety features in the unit.

AC Control: Communicating air conditioning control. AC controls low and high speed compressor operation, fan motor operation, and all safety monitors in the unit.

Discharge Air Sensor (DAS): Communicating discharge air sensor. Provides discharge air temperature to Bus, UI, and IFC for proper operation of equipment.

R: 24V power

C: 24V common

i+: + data information connection

i−: − data information connection

Configuration: Function that accrues during setup of system to identify other communicating devices. Configuration is also used in setup of a variable capacity furnace to properly set furnace parameters.

Memory Fault Recall: Method of checking for errors

Firmware: Software stored on a memory chip instead of being part of a program

Software: Programming and applications for computer

Page 3

icomfortt Touch Screen 7−Day Programmable Thermostat

icomfortt Technical Description

The 24VAC icomfortt thermostat stores system parameters and settings in a nonvolatile memory (i.e., it retains data when electrical power fails or is turned off). The thermostat (see figure 1) also:

Sincludes on-board help screens,

Ssupports heat pumps or non−heat pump units, with up to 4 stage heat / 2 stage compressor operation. (2 stages of heat pump heating and 2 stages of auxiliary backup heat are provided. Also, 2 stages of emergency heat are provided),

Ssupports Indoor Air Quality with time-based notification of consumables including media filters, UVC bulbs, humidifier pads, and PureAirt catalyst service / replacement,

Ssupports variable capacity / multistage heat/cool, universal compatibility (gas/electric/heat pump/ac), and is dual fuel capable with two balance points.

Important

Always use correct software version as recommended for replacement configuration (discovery).

Connections to non communication outdoor units and all accessories is described in the Quick−Start Installation guide. (Wiring diagrams are also shown beginning on Page 36.)

Thermostat connections

R I+ I − C

 

 

 

 

 

 

 

 

 

 

 

RSBUS

 

 

 

 

Maximum total length

Minimum wire size is

 

 

 

 

of all connections on

 

 

 

 

the RSBus is limited

18 gauge

 

 

 

 

 

 

 

 

to 1500ft.

 

 

 

 

 

 

 

 

 

icomfortt Outdoor Units Control icomfortt Furnace Control icomfortt Air Handler Control

External Sensors − outdoor temperature and humidity Humidify control

Dehumidify control

Figure 1. icomfort thermostat system

506052−01 11/09

Page 4

icomfortt Thermostat Features

Thermostat Type

Electronic communicating, color display touch screen, 7−day programmable.

Supports

SHumidification Measurement and Control,

SDew Point Adjustment Control,

SDehumidification Measurement and Control,

SHumiditrol® Enhanced Dehumidification Accessory (EDA),

SMulti-stage HVAC Systems,

SEquipment Maintenance Reminders.

SOn-board Help Screens.

The icomfortt thermostat’s autochangeover mode permits control of heating, cooling, humidification, and dehumidification without user involvement.

Outdoor Temperature Sensor

Communicating outdoor units contain a built in outdoor temperature sensor.

Installing icomfortt thermostat

Refer to the Quick Start Guide for all the information about installing the thermostat to a wall and for wiring diagrams for connecting the thermostat to the system using one of a number of possible configurations. (Wiring diagrams are also shown beginning on Page 36.)

After all the wiring is in place, apply power to the system. 24VAC will begin to power up the thermostat.

Continue with the Installer setup that follows.

Page 5

icomfortt Touch Screen 7−Day Programmable Thermostat

Installer setup − Page 1 of 8

After power is applied to the thermostat for the first time, the processor checks the system for installed communicating devices, the System discovery" screen (figure 2) is displayed on the thermostat; followed by the Use this thermostat" screen (figure 3). Press press here to continue.

SYSTEM DISCOVERY IN PROGRESS

 

Figure 2. System discovery

 

tests

setup

HELP

Thermostat 1

Use this Thermostat?

press here

Figure 3. Use this thermostat screen

During the setup process, alerts may pop open to inform the installer some item of information that affects the setup (figure 4). Tend to any such alerts prior to continuing setup.

critical alert

Active

Critical Alert Code: 31

AIR HANDLER reports:

Lost Communication with

THERMOSTAT −

Latest occurrence: 8/23/09

1:57 PM

close

press for more

Figure 4. Alert window

506052−01 11/09

Page 6

Installer setup − Page 2 of 8

System settings (figure 5) appear first. As you use the up/down arrows to scroll through the settings, the right hand side will show the current value, for example, Current Value: (35% ) shows the current setting of the Circulate Fan ON time.

setup

 

HELP

system settings

To view/edit a setting,

highlight it, then press edit.

 

Time and Date

 

Current Value:

Daylight Saving

 

 

(35%)

Time

 

 

 

Circulate Fan ON

 

 

time

edit

 

Dealer Name

 

 

Dealer Address

 

 

Dealer Phone

back

next step

Number

 

 

Dealer Email

Figure 5. System settings

The following shows the range/condition and defaults for the settings.

system setting

range/condition

default

use

Time and Date

 

see Page 8

 

Daylight Saving Time

Enabled/Disabled

Enabled

 

Circulate Fan ON Time

15 to 45

35%

 

Dealer Name

 

Lennox

 

Dealer Address

 

 

use type

Dealer Phone Number

(alpha−numeric

 

1−800−9−LENNOX

writer to

characters)

 

 

change

Dealer Email

 

 

 

 

Dealer Website

 

www.lennox.com

 

If you want to modify a setting, use one of the tools shown in figure 6. (Make time and date as described on Page 8.) After changes have been made, use save to store the changed data or cancel to exit the screen and return to the list of settings.

up/down arrows

 

Daylight Saving Time

 

 

 

scroll through a

 

 

 

 

 

 

 

 

 

 

numeric range for

 

 

Enabled

 

 

 

 

some settings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disabled

 

 

 

cancel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

save

typewriter tool to input

 

 

 

 

 

 

 

 

names, address, phone

 

 

 

 

 

 

 

numbers etc.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dealer Name

 

 

 

 

Lennox Repairman

 

 

 

 

 

 

 

 

1

2

 

3

 

4

5

6

7

8

9

0

q

w

e

r

 

t

y

u

i

 

o

p

!

@

 

#

 

$

%

^

&

(

 

)

a

s

 

d

f

g

h

j

k

 

l

 

 

*

 

_

=

+

/

.

 

 

cancel

z

x

 

c

 

v

b

n

m

 

 

 

symbols

 

CAPS

 

 

space

 

back

 

save

 

 

 

 

space

 

 

 

 

ON

 

 

 

 

 

 

Figure 6. Settings change tools

Page 7

icomfortt Touch Screen 7−Day Programmable Thermostat

Installer setup − Page 3 of 8

Setting time and date

 

 

 

 

S

Press other boxes and adjust with the arrows for all time and date

Use the arrows to select Time and Date; press edit (see figure 7). Press

information. When the date and time is correct, press save to save

settings and return to previous settings screen.

next to proceed to the Set current time and date" screen (figure 8).

 

 

 

setup

 

tests

HELP

setup

 

HELP

 

 

 

 

 

 

 

system settings

 

to adjust a setting, highlight

 

Time and Date

 

it, then press edit.

 

 

 

 

 

 

 

 

 

 

Time and Date

 

 

 

Current Value:

 

 

 

Daylight Saving

 

 

 

 

 

 

 

(September 15, 2009,

 

 

 

Time

 

 

 

 

 

 

 

09:23 AM)

 

 

:19

AM

 

 

 

 

 

10

Circulate Fan ON

 

 

 

 

 

 

 

 

 

 

 

 

adjust

time

 

 

 

 

 

 

 

 

 

 

 

 

Oct

15

2009

 

edit

 

 

Dealer Name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cancel

 

 

 

 

 

 

 

Dealer Address

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dealer Phone

 

 

 

 

 

 

 

 

Number

 

 

 

 

 

 

 

save

 

back

 

 

next step

 

 

 

 

 

 

 

 

Dealer Email

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 7. View/edit time and date

When the Time and Date" screen appears, enter the correct date as follows:

SPress one of the time and date boxes − the text will change to white type in a dark box (for example, press the 10" box in figure 8).

SPress the up/down arrows to change the data.

Figure 8. Set current time and date

NOTE − After setting the time and date, if you don’t need to add any non− communicating devices, you may wish to accept the default system parameters and skip forward to tests". To do so, repeatedly press next step on each screen until you get to the tests screen. From there, you can check the systems operation. Thereafter, should you need to change a communicating device parameter, access those settings by pressing the equipment tab in the installer section.

506052−01 11/09

Page 8

Installer setup − Page 4 of 8

Add/remove/modify non−communicating devices

From this screen (figure 9), use the yes button to access a list of non− communicating devices for installing or removing. A list similar to that shown in figure 10 will appear.

setup

 

HELP

system devices

 

 

HP

 

 

XP19−060−230−06

Add or Remove

 

5809K00015

Non−communicating

yes

AIR HANDLER

equipment?

 

CBX32MV−60

 

 

5809K00020

 

 

THERMOSTAT

 

 

49W95

 

 

A109K00139

 

 

SYSTEM

back

next step

Figure 9. Add/remove/modify non−communicating devices

Humidification / Dehumidification Control Modes depend on a humidifier and/or dehumidifier being added to the system. Therefore, you must press yes on the button near "Add or Remove Non−communicating equipment?" Also, in order for the user’s display to show these controls, the system controls must be set. See Page 12 for more information.

Use the up/down arrows (see figure 10) to select a setting. The right hand side of the screen indicates what is currently selected, for example, Current Value: (Not Installed); press edit if you want to modify that setting.

setup

non−communicating device list

HUMIDIFIER

DEHUMIDIFIER

UV LIGHT

HELP

to adjust a setting, highlight it, then press edit

Current Value:

(Not Installed)

edit

back

Figure 10. Installing UV Light

A typical Installed status screen (Figure 11) shows if the device is not installed or type of equipment installed. Use the arrows to change and use save to save the change. (Cancel goes pack to previous screen.)

Installed Status

Not Installed

UV LIGHT

cancel

save

Figure 11. Typical non−communicating device edit screen

Page 9

icomfortt Touch Screen 7−Day Programmable Thermostat

Installer setup − Page 5 of 8

Modify communicating device settings

Use this screen (figure 12) to access communicating devices’ settings. Use back to return to the previous screen or next step to go on.

setup

system devices

HP XP19−060−230−06 5809K00015

AIR HANDLER CBX32MV−60 5809K00020

THERMOSTAT 49W95 A109K00139

SYSTEM

HELP

to adjust a device, highlight it, then press edit

about

edit

reset ALL

back

next step

Figure 12. Accessing communicating device settings

With one of the devices highlighted, press about, then use arrow keys to see a list of data about the selected device. If you select reset ALL, and then confirm, ALL devices will be reset to their factory settings. (You would see a screen similar to figure 14.)

With one of the devices in figure 12 highlighted, press edit to go to that device’s list of settings (see figure 13).

Use the up/down arrows to scroll through the device’s settings and observe the right hand side of the screen (figure 13) to see the current setting, for example, Current Value: (Off). Press edit if you want to modify that setting, or press back to return to the previous screen.

setup

 

HELP

HP

to adjust a setting, highlight it,

then press edit

 

Equipment Name

 

 

Compressor Short

 

Current Value:

Cycle Delay

 

(Off)

Defrost

 

 

Termination Temp

edit

reset

Compressor Shift

Delay On/Off

back

Figure 13. Modify communicating device settings

Settings available for the devices are dependant on the components you have. Shown below is an example of changing the compressor shift delay on. After using the arrows to select On, press save to save the changes and return to the previous screen.

Compressor Shift Delay On/Off

On

 

Off

cancel

 

 

save

506052−01 11/09

Page 10

Installer setup − Page 6 of 8

If you select reset and then confirm, the highlighted device will be reset to its factory setting. You would see a screen similar to figure 14, but referencing only the selected device.

Resetting ALL devices to their factory default settings will cause the system to restart the setup process. If you want to continue, then press ’confirm’ or press ’cancel’.

confirm cancel

Figure 14. Reset device confirmation note

After a reset, the device which had its settings reset to default will display in the system devices screen in red type. You will be required to highlight the red−type device(s) and use edit (see figure 12) to change, or at least view the changed settings of the red−type devices .

In the edit mode, the feature list will show the selected device’s changed features in red type. Use the up/ down arrows to select each red−typed feature and press edit. Make changes to the settings using the Edit tools if desired, or at least, press save in each feature screen. Upon saving, the previous screen will display and the type will again be black. Press back to return the Modify communicating device settings screen.

HP XP19−060−230−06 5809K00015

AIR HANDLER CBX32MV−60 5809K00020

Equipment

Name

Electric Heating

Airflow

Low Cooling

Airflow

Low Cooling

Airflow

At this point press next step to advance to the test controls.

Page 11

icomfortt Touch Screen 7−Day Programmable Thermostat

Installer setup − Page 7 of 8

Indoor air quality controls

An example of installing UV Light is shown in figure 10, Page 9.

To turn on humidification or dehumidification controls, in addition to the setup described on Page 9, work from either the setup tab or the equipment tab to get to the adjustment screen (figure 15). Use the arrows to highlight the SYSTEM selection. Press edit.

A long list of features are listed on the right of the next screen (see figure 16). Use the arrows to locate Humidification Control Mode and/or Dehumidification Control Mode. Press edit.

Depending on the type of equipment installed, the lists of options may be different than those shown in figure 17. In order for either or both of these controls to display, the selected option must be other than Display Only".

setup

tests

system devices

XP19−060−230−06

5809K00015

AIR HANDLER CBX32MV−60 5809K00020

THERMOSTAT 49W95 A109K00139

SYSTEM 49W95 A109K00139

equipment HELP

(to adjust a device, highlight it, then press edit)

about

edit

reset ALL

back

next step

Figure 15. Accessing the SYSTEM adjustment screen

506052−01 11/09

Page 12

+ 27 hidden pages