LAARS LT Premium Water Heater Video https://www.laars.com/videos/lt-series-water-heater-recirc-model LAARS LT Premium Water Heater Recirculation Programming Instructions are on pages 60-66 of the LT199NRX1 I/O Manual : See manual here - ...
The LAARS LT199NRX1/LT199PRX1 (recirc models) are program defaulted from the factory for NON recirc. To activate recirc function the water heater must be programmed to provide recirc function depending on the recirc option selected and piped in that ...