What is the pressure requirement for the pressure relief valve (PRV) on Rinnai Condensing Boilers?

In closed-loop (not domestic hot water) applications, an ASME-approved 30-psi pressure relief valve is included with every Rinnai condensing boiler. However, since the maximum allowable working pressure of the boiler's heat exchanger is rated by ASME up to 45 psi, the installer can replace the 30-psi PRV to suit the needs of the application. It’s important to note that Rinnai E Series Boilers with expansion tanks are limited to 30-psi maximum PRV due to their internal expansion tank.

FIND A PRO

Talk to a PRO to learn more or schedule an installation

Find
REGISTER A UNIT

Register your unit to ensure the reliability of your product

Register Now
CONTACT SUPPORT

Speak with a Customer Care agent to ask a question or give us feedback

Contact