Tech Bulletin

•

The BMS Gateway is not compatible with Commercial SENSEI™ Tankless Water Heaters manufactured

before serial number LM.BA-152112.

Commercial SENSEI™ Tankless Water Heaters manufactured before serial number LM.BA-152112

must have the PC Board replaced for BMS Gateway compatibility.

How to Locate the Tankless Water Heater Serial Number:

The tankless water heater serial number is located on the left side panel label of the tankless water

heater (Fig 1).

Fig 1. Sample Label with Serial Number. Label image is for illustrative purposes only. Your label

may appear differently.

S A M P L E

SERIAL #: LM.BA-152112

Rinnai will provide a replacement PC Board under warranty if the tankless water heater meets the

following conditions:

• The tankless water heater was purchased and installed after January 1st, 2021.

• The tankless water heater was manufactured before serial number LM.BA-152112.

• The tankless water heater installation includes the BMS Gateway (part number: R-BMS-100).

IMPORTANT

PAGE 1
• • The BMS Gateway is not compatible with Commercial SENSEI™ Tankless Water Heaters manufactured before serial number LM.BA-152112. Commercial SENSEI™ Tankless Water Heaters manufactured before serial number LM.BA-152112 must have the PC Board replaced for BMS Gateway compatibility. IMPORTANT Rinnai will provide a replacement PC Board under warranty if the tankless water heater meets the following conditions: • The tankless water heater was purchased and installed after January 1st, 2021.
PAGE 2
Compare Serial Numbers: • To determine if your serial number is manufactured before serial number LM.BA-152112, compare the last six digits of your serial number to the last six digits of the above serial number: 152112. • If the last six digits of your serial number are less than 152112, then the tankless water heater is manufactured before serial number LM.BA-152112 and the PC Board will need to be replaced.