Relief Valve Piping; Piping For Multiple Racks - Rinnai SE Series Installation Manual

Relief Valve Piping

Each Rinnai tankless water heater on the TRS comes installed with Isolation valves and a pressure relief valve.
Refer to the installation and operation manual for more information on proper piping for the relief valve drain.
Pressure Relief
Valve
Isolation Valve

Piping for Multiple Racks

Multiple rack systems should be installed in parallel using a secondary manifold from the building cold and hot
water supply. Reference the drawing on the following page for guidance on plumbing multiple racks in a parallel
piping system.
A low pressure gas regulator must be installed prior to the rack system. Note the maximum cumulative input for
the system when sizing the gas regulator.
Use common plumbing practice and reference all applicable codes when sizing the secondary manifolds and gas
regulator.
34 Rinnai Rack Installation