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Lochinvar TST20009 is an outlet/high limit sensor designed for use in various Lochinvar hydronic heater models. This replacement part monitors outlet temperature and ensures safe operation by triggering high-limit conditions. It is compatible with a wide range of models including AWL, AWN, FTX, KBL, KBN, WBL, WBN, XLPL, XLPN, and XPL series, providing essential temperature regulation for heating systems.
Monitors outlet temperature and high-limit conditions for safe operation in compatible Lochinvar heating units.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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