
iHarmony® Zoning System - Zone Sensor
(17A30)
Installation and Setup Guide
507826-01 6/2018
©
Lennox Industries Inc.
Dallas, Texas, USA

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 ........................................ 8
Setup Guide..........................................................8
Apply Power ........................................................................ 8
Menu > Advanced Settings ................................................. 8
Installer Checklist ...............................................12
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, service or maintenance can cause property damage,
personal injury or loss of life.
Installation and service must be performed by a licensed 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 10C17 In-Zone thermostat.
2

CAUTION
This is a 12VDC low-voltage zone sensor. Do not
install on voltages higher than 14VDC.
Electrical Characteristics
Dimensions
Unit Dimensions (H x W x D)
Dimensions: 3-5/16 x 4-5/16 x 7/8 in. (84 x 110 x
22mm)
Wall Plate Dimensions (H x W)
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
Input
Current
10 12 14 VDC
- 61.5 133 mA
WARNING
Always turn off 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: 4-1/2” x 5-3/4” (114 x 146mm)
Installation Guide
installation ConsiDerations
The 17A30 zone sensor is a 12VDC low-voltage
device and requires a common wire to the damper
control module to operate.
• Shut off 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
3

UnPaCking Zone sensor anD Determining Best
loCation
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
affected 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
installing 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 3 inches (76mm) of thermostat
wire through the opening and removed 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 affect the zone
sensor’s internal temperature and humidity
sensors.
4