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Table of Contents
Troubleshooting
Related Manuals for Lennox 21L07
Summary of Contents for Lennox 21L07
- Page 1 ©2023 Lennox Industries Inc. Dallas, Texas, USA TEMPERATURE / TEMPERATURE / WIRELESS REPEATER RELATIVE HUMIDITY RELATIVE HUMIDITY CATALOG # 21L09 SENSOR SENSOR WITH DISPLAY CATALOG # 21L07 CATALOG # 21L08 INSTALLATION INSTRUCTIONS FOR WIRED/ WIRELESS SENSORS AND REPEATER KITS...
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Page 2: Table Of Contents
Sensor with Display – Communication Loss .......25 Sensor with Display – Maintenance Mode ........25 M4/W4 Wireless Gateway System ..........4 Repeater (21L09)............29 Wireless/Wired Temperature / Relative Humidity Sensor (21L07) 4 Repeater – 24VAC (Line Power)..........29 Wireless Temperature / Relative Humidity Sensor With Display (21L08) ..................5 Repeater –... -
Page 3: Acronym List
Acronym List Shipping and Packing List The temperature sensors (21L07 & 21L08) and After Hour Override CORE Unit Controller wireless repeater (21L09) are sold separately. American Wire Gauge Media Access Wireless/Wired Temperature / Relative Control Humidity Sensor (21L07) 106924-01 &... -
Page 4: Overview
If the signal is nal from to Lennox CORE Unit Controller to: weak or the RTU is off for long periods, CORE Service App the signal strength LED illuminates and »... -
Page 5: Wireless Temperature / Relative Humidity Sensor With Display (21L08)
CORE Service Application ® • Wireless or S-BUS (for adding Sensors and Repeaters) • Locking Captive Screw • Connects to the Lennox CORE Unit ® Controller • One display sensor (21L08) can be used per rooftop unit with up to four non-display •... -
Page 6: Sensors
Sensors 21L08 21L07 TMP/RH SENSOR TMP/RH SENSOR WITH DISPLAY CATALOG # 21L07 CATALOG # 21L08 RESET Button RESET Button After Hour Override After Hour Override BEACON Enable Button (AHO) Enable Switch BEACON Enable Button (AHO) Enable Switch BATTERY Status LED... -
Page 7: Wireless Sensor Configuration
LED Enable NOTE: Switch settings: 1 = ON; 0 = OFF. S1, Switch 6 determines the mode: Sensor – Power Options (21L07 & 21L08) • 1 = Stand Alone or Battery Power: The wireless sensor is • 0 = Network/BAS •... -
Page 8: Sensor - S-Bus Wired Installation Setup
Wired Stand Alone - Functions indepen- S -BUS OPERATION IN STANDALONE MODE dently with a controller. See page 8. • NCP - Functions in a network with a Lennox RTU BUS Address = 2 Network Control Panel. See page 9. - Page 9 Sensor - NCP Both sensors (21L07 & 21L08) are compatible with unit controllers participating in an NCP/L- Connection system. The 21L07 and 21L08 are compatible with the following unit controllers: • M1-8 • • • See Figure 6. NCP Wiring Configuration for a wiring example.
- Page 10 5. Select S-BUS / Wireless Sensor (beneath) RTU must have a unique address. Network Setup Wizard and select Next. NOTE: Lennox M3/M4 Unit Controllers use 6. Enter the S-BUS Address and select Next. a default S-BUS address of 2. If the 7.
- Page 11 Thermostat/ Return Air Backup and select ventilation need and select Next. SAVE. 12. Select Backup Mode as None/Wired NOTE: Lennox recommends selecting Backup ® Thermostat/Return Air Backup and select Mode (Return Air Backup). Next. The summary displays.
- Page 12 Sensor – Operation with BACnet Network (M3/M4 ONLY) Both sensors (21L07 and 21L08) are compatible with unit controllers participating in an BACnet Building Automation System (BAS). The 21L07 is ONLY compatible in this mode of operation with M3 and M4 Unit Controllers.
- Page 13 Switch Settings Setup For setup with the M4 Unit Controller: (BACnet Network M3/M4 ONLY) 1. Download the CORE Service App. The S1 and S2 switch settings must be set 2. Apply power to the sensor. according to Figure 10 before power is supplied 3.
- Page 14 15. Select BACNET and select SAVE. switch S1 on the sensor. 16. Enter the BACNET MAC ADDRESS and NOTE: Lennox M3/M4 Unit Controllers use BAUD RATE; select SAVE. The BACnet a default S-BUS address of 2. If the MAC address should be unique for each sensor and unit controller are both RTU.
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Page 15: Sensor - Wiring Troubleshooting
• For the M2 Unit Controller, use the DATA > Thermostat/ Return Air Backup and select SENSORS menu to display the data. SAVE. • For the M3 Unit Controller, use the DATA > NOTE: Lennox recommends setting a backup ® IN/OUTPUT > SENSORS > NETWORK. mode (Return Air Backup). -
Page 16: Sensor - Wireless Installation Setup
IMPORTANT It is recommended to add the sensors PRIOR to adding the repeaters. If this is not possible, (For 21L07 & 21L08 models): The MAC discontinue power to the repeaters before address of the wireless sensor becomes adding the sensors. - Page 17 Stand Alone operation is a setup of one CORE Unit Controller, one sensor with display (21L08), and up to four optional wireless sensors (21L07). When in Stand Alone mode, the Occupancy icon and the setpoint will display even if the sensor is...
- Page 18 Figure 11. Stand Alone and BLE Select the Control Source as Room Settings prior to supplying power to the sensor. Sensor and select Next. 21L07 and 21L08 Select CO2 sensor source as Local or None. Select Relative Humidity Sensor Source as Network and select Next.
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Page 19: Sensor - Placement And Confirming Location (Test Mode Procedure)
Test Mode, the Signal Indicator five (5) times sequence is complete. LED will illuminate (though not im- Battery is good, and sensor is within range. mediately). Lennox suggests relying ® 3 Blinks Sensor is good to solely upon the Test Mode procedure install. -
Page 20: Sensor - Wireless Checkout / Troubleshooting
Sensor – Wireless Checkout / Sensor – Low Battery Indication Troubleshooting The Battery LED will blink for 10 seconds when It may be necessary to verify whether the added the battery voltage drops below 20%. An alarm wireless sensor is grouped and communicating will activate if the system is using an M4 Unit with the rooftop unit. -
Page 21: Sensor - Data Verification
Sensor – Data Verification IMPORTANT It may be required to verify whether the added Lennox recommends performing a hard reset ® wireless sensor is grouped and communicating after removing the sensors from the network. with the rooftop unit. The sensor data displays on the CORE Service Sensor Hard Reset App dashboard screen. -
Page 22: Sensor With Display Features (21L08 Only)
Adjusting Temperature Setpoint Sensor with Display Features (21L08 Only) NOTE: Users can navigate the screens by Sensor with Display – Temperature pressing the Up or Down arrow button. Setpoint Adjustment The screens are set on a loop. 1. Press the Up or Down arrow button. When changing the setpoints, the value being The display presents HSP and CSP values adjusted must fall within the setpoint adjustment... -
Page 23: Sensor With Display - Occupancy Override
3. Press the Up or Down arrow button to Manual Operation find the desired temperature. The system While in Manual Operation, the user can press returns to the main screen after the user the AHO button to toggle the rooftop unit reaches the desired setpoint or after five between Occupied and Unoccupied status. -
Page 24: Sensor With Display - Sleep Mode
Scheduled Operation Sensor with Display – Sleep Mode While in Scheduled Operation, the user can The default setting for Sleep Mode in systems press the AHO button to activate a temporary that are wired/S-BUS configurations is OFF. Occupancy Override if the rooftop unit’s For wireless system configurations, the default schedule controller (BACnet or NCP) allows the setting for Sleep Mode is ON. -
Page 25: Sensor With Display - Communication Loss
NOTE: Sleep Mode can be enabled in line- SBUS powered operation. Sleep Mode is If there is a communication loss between the forced ON in wireless mode. wireless sensor and the rooftop unit, the Alert Icon displays on the sensor’s display. Sensor with Display –... - Page 26 SBUS (wired) alert status 1. Press the Down arrow button. Press the Down arrow button to navigate through the following screens: 2. Press the down arrow button. The SBUS Address screen displays. • Alert Status. Shows whether an active alert exists on the rooftop unit;...
- Page 27 SBUS Connectivity Status • Battery Level. Displays how much battery life remains. While in Maintenance Mode, press the Down arrow button until the SBUS Address screen • RSSI Signal Strength. Indicates the displays. If the screen displays Connected the strength of the wireless connection. SBUS connectivity is uninterrupted.
- Page 28 Battery Level RSSI Signal Strength 1. Enter Maintenance Mode and press the 1. Enter Maintenance Mode and press the Down arrow to navigate through the Down arrow button to navigate through the Maintenance Mode screens. Maintenance Mode screens. 2. Press the Alert screen. 2.
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Page 29: Repeater (21L09)
IMPORTANT Repeater (21L09) Lennox recommends adding the repeaters ® after adding the wireless sensors. Lennox ® RESET button highly recommends adding the repeaters at BEACON enable button the roof-top unit before installation in desired locations. SIGNAL strength LED To connect the wireless repeater to the rooftop unit BLE mesh network: 1. -
Page 30: Repeater - Signal Strength Alert Indication
5. Verify the CORE Service App displays 2. Press the Beacon button for five (5) sec- “Node Added” on the Sensor Network. onds and release. 3. Wait five (5) to 20 seconds for the test to IMPORTANT complete. 4. Observe the status of the Signal Strength A maximum of five wireless repeaters can be LED (Table 2. -
Page 31: Repeater - Network Removal And Reset
Repeater Hard Reset To perform a factory reset: IMPORTANT 1. Press and hold both the Beacon and Reset buttons for 10 seconds. Lennox recommends performing a hard reset ® 2. Release only the Reset button. after removing the sensors from the network. -
Page 32: Repeater And Sensor Placement Requirements
Repeater and Sensor Placement Requirements Wireless sensors can also be used as repeaters if powered by external 24VAC. A maximum of two repeater hops are supported. Wireless sensors operated on battery power cannot hop a signal to the next device, and therefore operate only as a temperature sensor. SINGLE STORY BUILDING INSTALLATION NO REPEATER USED ROOFTOP UNIT... - Page 33 TWO STORY BUILDING INSTALLATION REPEATER OR SENSOR POWER BY 24VAC ROOFTOP UNIT (BLE ANTENNA INSTALLED IN ROOF RETURN AIR SECTION OF RTU) (Typical construction - Corrugated Steel) MAXIMUM PENETRATION OF 1 ROOF, 1 CEILING/FLOOR AND TWO INTERIOR WALLS (TYPICAL) HOP 1 MAXIMUM DISTANCE BETWEEN RTU (M4/W4) AND REPEATER IS 80 FEET INTERIOR WALLS...
- Page 34 TWO STORY BUILDING INSTALLATION REPEATER OR SENSOR USING 24 VAC ROOF TOP UNIT (BLE ANTENNA INSTALLED IN ROOF RETURN AIR SECTION OF RTU) (Typical construction - Corrugated Steel) MAXIMUM PENTRATION OF 1 ROOF, 1 CEILING/FLOOR AND TWO INTERIOR WALLS (TYPICAL) HOP 1 MAXIMUM DISTANCE BETWEEN MAXIMUM DISTANCE BETWEEN...
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Page 35: Fcc Compliance Statement
and on, the user is encouraged to try to cor- FCC Compliance Statement rect the interference by one of the following measures: PART 15.19 This device complies with Part 15 • Reorient or relocate the receiving antenna. of the FCC Rules. Operation is subject to the •...
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