Lennox iHarmony Zone Thermostat Assembly instructions

507826-02 11/2019
Supersedes 507826-01
© Lennox Industries Inc.
Dallas, Texas, USA
iHarmony®Zoning System - Zone Sensor
(17A30)
Installation and Setup Guide

2
Tables of Contents
Shipping and Packing List ......................................... 2
Electrical Characteristics ........................................... 3
Dimensions................................................................ 3
Unit Dimensions (H x W x D) .............................................. 3
Wall Plate Dimensions (H x W) ........................................... 3
Installation Guide....................................................... 3
Installation Considerations.................................................. 3
Unpacking Zone Sensor and Determining Best Location ... 4
Installing Zone Sensor ........................................................ 4
Zone Sensor Terminal Information ...................................... 6
Connecting Zone Sensor Wiring ......................................... 6
Install Zone Sensor to Backplate ........................................ 7
Setup Guide............................................................... 7
Apply Power and Set Zone Numbers.................................. 7
Menu > Advanced Settings ................................................. 8
iComfort S30 Ultra Smart Thermostat - Installer
Zoning Control Settings............................................. 9
Thermostat Initial Commissioning....................................... 9
Rerunning Thermostat Commissioning............................... 9
Verify Airow Per Zone...................................................... 10
Changing Zone Names ..................................................... 10
Installer Checklist .................................................... 14
Summary of Changes.............................................. 15
Shipping and Packing List
Item Quantity
Zone sensor with backplate attached 1
Wall plate 1
Mounting screws (M3.5x25mm self-
tapping screws)
2
Wall anchors 2
Warranty sheet 1
Installation and setup guide 1
User guide 1
WARNING
Improper installation, adjustment, alteration, ser-
vice or maintenance can cause property damage,
personal injury or loss of life.
Installation and service must be performed by a li-
censed professional HVAC installer (or equivalent)
or a service agency.
The 17A30 Zone Sensor can be used in systems
controlled by any Lennox communicating thermostat.
The 17A30 zone sensor can also be used in
combination with the now discontinued 10C17 In-
Zone thermostat.

3
CAUTION
This is a 12VDC low-voltage zone sensor. Do not
install on voltages higher than 14VDC.
Electrical Characteristics
All values are at 77°F (25°C). This unit does employ
mis-wire circuit protection.
Table 1. Zone Sensor Power Requirements
Min Nom Max Unit
Input
Voltage
10 12 14 VDC
Input
Current
- 61.5 133 mA
WARNING
Always turn o󰀨 power at the main power source
by switching the circuit breaker to the OFF
position before installing or removing this zone
sensor.
All wiring must conform to local and national
building and electrical codes and ordinances.
Dimensions

Dimensions: 3-5/16 x 4-5/16 x 7/8 in. (84 x 110 x
22mm)

Dimensions: 4-1/2” x 5-3/4” (114 x 146mm)
Installation Guide

The 17A30 zone sensor is a 12VDC low-voltage
device and requires a common wire to the damper
control module to operate.
• Shut o󰀨 all power to system components before
installing zone sensor.
• Make sure that all wiring conforms to local
and national building and electrical codes and
ordinances.
• Never install the zone sensor on outside walls or
in direct sunlight.
• Use 2-pair, 18AWG unshielded thermostat cable
(eld-provided) for power terminals (PWR and
C). Recommend using 2-pair 22AWG shielded
thermostat cable for communications terminals
(D+ and D-) which will help eliminate any noise
interference.

4


This procedure is for either new or relocating a zone
sensor installations.
1. Unpack the zone sensor.
2. Select a location for the zone sensor about 5
feet (1.5 meters) above the oor in an area with
good air circulation at average temperature.
3. Do not install the zone sensor where it can be
a󰀨ected by:
• Drafts or dead spots behind doors and in
corners
• Building entrances or automatic doors
• Heat generating equipment such as kitchen
appliances
• Hot or cold air from ducts
• Radiant heat from sun or appliances
• Concealed pipes and chimneys
• Non-heated (non-cooled) areas such as an
outside wall behind the zone sensor

IMPORTANT
Installation uses 18 gauge thermostat wire with
a wire run length NOT TO EXCEED 197 feet (60
meters) between damper control module and any
one zone sensor.
Do not run wiring next to high voltage or high
voltage ballast.
Load from any zone sensor connection is 1 AMP
or less.
1. Run thermostat wiring from iHarmony damper
control module to location where zone sensor
will be installed.
2. Drill or make opening through wall for thermostat
wiring 3/4” x 3/4” (19mm x 19mm).
3. Pull about three inches (76mm) of thermostat
wire through the opening and remove outer
thermostat wire jacket. This will help in routing
the thermostat wiring to the proper zone sensor
terminals.
4. Seal the hole in the wall with a suitable material
to prevent drafts from entering the zone sensor
case. Not doing so could a󰀨ect the zone
sensor’s internal temperature and humidity
sensors.

5
5. Trim 1/4 inch (6 mm) insulation from end of each
thermostat wire lead.
6. Use the provided wall plate as a template on
where to drill the mounting holes.
NOTE: Installation of wall plate is optional. Use
a eld-provided level to allow for proper
alignment.
(Use a level) Align Wall Plate
Use unit wall plate as template to mark desired
mounting hole locations on wall.
7. Drill 3/16” (5 mm) holes in wall for provided wall
anchors. Insert provided wall anchors into drilled
holes.
8. Remove back plate from main zone sensor
assembly using a at-head screw driver.
9. Route wiring from wall through center openings
on wall plate (use is optional) and back plate.
Wall Plate (optional)
Zone Sensor Back Plate
Run thermostat wire
through openings

6
10. Secure back plate and wall plate (optional) to
wall with the two provided mounting screws.
Wall Plate (optional)
Zone Sensor Back Plate
Screw

Table 2. Terminal Designations
PWR D+ D- C
Terminal Purpose
PWR Zone sensor power 12VDC input.
D+ Zone sensor data high.
D- Zone sensor data low.
CZone sensor 12VDC return.
See “Figure 2. Connecting Zone Sensor to Damper
Control Module” on page 7.

Use “Table 2. Terminal Designations” on page 6
for connecting the thermostat wiring to the back
plate terminals.
Figure 1. Backplate
NOTE: Remember to seal the hole in the wall with
a suitable material to prevent drafts from
entering the zone sensor case. Not doing
so could aect the zone sensor’s internal
temperature and humidity sensors.
NOTE: Use 2-pair, 18AWG unshielded thermostat
cable (eld-provided) for power terminals
(PWR and C). Recommend using 2-pair
22AWG shielded thermostat cable for
communications terminals (D+ and D-) which
will help eliminate any noise interference.

7
DAMPER CONTROL
MODULE (DCM)
D+
PWR
D-
C
ZONE 5
D+
PWR
D-
C
ZONE 2/6
D+
PWR
D-
C
ZONE 3/7
D+
PWR
D-
C
ZONE 4/8
Zone
Sensor
C
D-
D+
PWR
NOT USED
18AWG Unshielded Thermostat Wire
18AWG Unshielded Thermostat Wire
22AWG Shielded Thermostat Wire
22AWG Shielded Thermostat Wire
Figure 2. Connecting Zone Sensor to Damper
Control Module

The zone sensor assembly simply snaps onto the
back plate. Once secure to the back plate apply
power to the system. The zone sensor should boot
up and go into the commissioning process.
If power is applied and the zone sensor screen
remains o󰀨, inspect and verify all wire connections.
Figure 3. Installing Zone Sensor
Setup Guide
CAUTION
When replacing a failed zone sensor, remember to
set the new zone sensor to the same address as
the one being replaced. Also, If an existing zone
sensor has failed and being replaced by a zone
sensor relocated from another zone in the home,
remember to set relocated zone sensor’s address
to match the one that has failed. Not doing so
could contribute to incorrect zone operations and
possible equipment damage.

After power is applied to the zone sensor for the
rst time it will display the Lennox®“splash screen”
and then the zone number selection screen. Set the

8
address using the plus/minus buttons. Selections
are 2, 3 or 4.
NOTE: Zone 1 is always the S30 thermostat. Each
additional zone sensor will have to have a
unique zone number assigned to it.
zone number
zone 3 +
-
Figure 4. Zone Selection

This represents the menu icon. Most
procedures will start with menu and with
directions to sub-menus.
Table 3 lists the settings that can be adjusted under
this menu selection
Table 3. Advanced Settings
Menu Selection Setting
Zone
Number
Default value is 2. Minimum value is
2. Maximum value is 4. Adjustment is
made with using the + or - selection
tool.
NOTE: Zone 1 is always reserved for
the S30.
Table 3. Advanced Settings
Menu Selection Setting
Reset
Resets the zone sensor to factory
default settings. Select Conrm to
reset all.
Restart Reboots the zone sensor.

9
iComfort S30 Ultra Smart
Thermostat - Installer Zoning
Control Settings

If zoning control was added during initial installation
of the S30 control system. Perform the following
steps:
1. Navigate through the various commissioning
screens until you reach Equipment Found
screen. Verify that a Zone Control icon is
present. If so, the system has detected the
equipment. Press continue to proceed.
NOTE: If zoning control is not listed, verify installation
of the damper control module and all wiring
connections. Make any corrections required
and run Re-Congure System feature again.
2. When the iHarmony Zoning screen appears,
select each zone listed to rename it if desired.
The system provides predene names or a
custom name can be added. Press done when
completed and press continue to proceed.
NOTE: If a particular zone is missing from the list,
verify that the zone sensor wiring is correct
and that the zone address is set correctly on
zone sensor.
3. The Verify Airow Per Zone screen will appear.
Make the requirement CFM adjustment for each
zone on this screen. When done, press continue
to proceed.

If zoning control was added to an existing S30
control system. Perform the following steps:
1. From the home screen, select the Menu Icon
2. Select Settings
3. Select Advanced Settings
4. Select View Dealer Control Center
5. Select Equipment
6. Select Reset
7. Select . This will instruct
the thermostat to scan for new equipment.
8. Navigate through the various commissioning
screens until you reach Equipment Found
screen. Verify that a Zone Control icon is
present. If present, the system has detected the
equipment. Press continue to proceed.
NOTE: If zoning control is not listed, verify installation
of the damper control module and all wiring
connections. Make any corrections required
and run Re-Congure System feature again.
9. When the iHarmony Zoning screen appears,
select each zone listed to rename it if desired.
The system provides predene names or a
custom name can be added. Press done when
completed and press continue to proceed.

10
NOTE: If a particular zone is missing from the list,
verify that the zone sensor wiring is correct
and that the zone number address is set
correctly on both types of zone sensors
(17A30 and 10C17).
10. The Verify Airow Per Zone screen will appear.
Make the requirement CFM adjustment for each
zone on this screen. When done, press continue
to proceed.

To verify zone airow, use the following procedure:
1. From the home screen, select the Menu Icon
2. Select Settings
3. Select Advanced Settings
4. Select Dealer Control Center
5. Select Tests
6. Make the requirement CFM adjustment for each
zone on this screen. When done, press continue
to proceed.

If at a later time the zone name needs to be changed,
use the following procedure to do so:
1. From the Home screen, select the Menu icon in
the upper right-hand corner of the screen.
2. Press settings.
3. Press  zoning to bring up the zone
list. To rename each zone, select the applicable
zone.