LENNOX 508172-01 Thermistor Replacement Kit Instruction Manual
- June 4, 2024
- Lennox
Table of Contents
508172-01 Thermistor Replacement Kit
Instruction Manual
508172-01 Thermistor Replacement Kit
INSTALLATION INSTRUCTIONS FOR THERMISTOR KITS USED ON LGM/LCM036-300 PACKAGED UNITS
Shipping and Packing List
Package 1 of 1 contains:
4- Thermistors with wire harnesses
WARNING
Improper installation, adjustment, alteration, ser vice, or maintenance can cause property damage, personal injury, or loss of life. Installation and ser vice must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier
CAUTION
As with any mechanical equipment, contact with sharp sheet metal edges can
result in a personal in jury. Take care while handling this equipment and
wear gloves and protective clothing.
Check the packaging for shipping damage. Contact the last carrier immediately
if any shipping damage is found.
Application
Units are equipped with factory-installed thermistors located at different
points on the refrigerant circuit. The thermistors provide the Unit Controller
with constant temperature readings. These temperatures are used as feedback in
certain modes of unit operation. In addition, the Unit Controller uses these
temperatures to initiate alarms such as loss of condenser or evaporator
airflow and loss of charge.
Each thermistor must be specifically placed for proper unit operation and to
initiate valid alarms. See tables 1 through 6 for proper locations and kit
application.
Note – Four thermistors are provided in each kit but not all thermistors
are used in each application.
TABLE 1
036, 048
| Cat. No. | Ass’y. No. | Sensor Yellow | Figure |
|---|---|---|---|
| 22J06 | 623049-01 | RT46 | Figure1 |
| 22J07 | 623049-02 | RT42 | Figure1 |
| 22J08 | 623049-03 | RT48 | Figure3 |
| 22J09 | 623049-04 | RT44 | Figure3 |
TABLE 2
060, 074
| Cat. No. | Ass’y. No. | Sensor Yellow | Figure |
|---|---|---|---|
| 22J06 | 623049-01 | RT46 | Figure2 |
| 22J07 | 623049-02 | RT42 | Figure2 |
| 22J08 | 623049-03 | RT48 | Figure3 |
| 22J09 | 623049-04 | RT44 | Figure3 |
TABLE 3
092, 102, 120, 150
Cat. No.| Ass’y. No.| Sensor
Yellow, Blue| Figure
---|---|---|---
22J06| 623049-01| RT46, 47| Figure4
22J07| 623049-02| RT42, 43| Figure4
22J08| 623049-03| RT48, 49| Figure4
22J09*| 623049-04| RT44, 45| Figure4
TABLE 4
156, 180
Cat. No.| Ass’y. No.| Sensor
Yel, Blue, Red| Figure
---|---|---|---
22J06| 623049-01| RT46, 47, 50| Figure7
22J07| 623049-02| RT42, 43, 54| Figure7
22J08| 623049-03| RT48, 49, 52| Figure9
22J09| 623049-04| RT44, 45, 56| Figure9
TABLE 5
210
Cat. No.| Ass’y. No.| Sensor
Yel, Blu, Red, Green| Figure
---|---|---|---
22J06| 623049-01| RT46, 47, 50, 51| Figure8
22J07| 623049-02| RT42, 43, 54, 55| Figure8
22J08| 623049-03| RT48, 49, 52, 53| Figure10
22J09| 623049-04| RT44, 45, 56, 57| Figure10
TABLE 6
240, 300
Cat. No.| Ass’y. No.| Sensor
Yel, Blu, Red, Green| Figure
---|---|---|---
22J06| 623049-01| RT46, 47, 50, 51| Figure8
22J07| 623049-02| RT42, 43, 54, 55| Figure8
22J08| 623049-03| RT48, 49, 52, 53,| Figure11
22J09| 623049-04| RT44, 45, 56, 57| Figure11
PACKAGED UNITS KITS
508172-01
4/2022
Supersedes 5/2021
©2022
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LENNOX 508172-01 Thermistor Replacement
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