Installation Sheet

10 Rinnai Rack Installation
Piping for MulƟple Racks
Mulple rack systems should be installed in parallel using a secondary manifold from the building cold and hot
water supply. Reference the drawing for guidance.
A low pressure gas regulator must be installed prior to the rack system. Note the maximum cumulave input for
the system when sizing the gas regulator.
Use common plumbing pracce and reference all applicable codes when sizing the secondary manifolds and gas
regulator.
Relief Valve Piping
Each Rinnai tankless water heater on the TRS comes installed with Isolaon valves and a pressure relief valve.
Refer to the installaon and operaon manual for more informaon on proper piping for the relief valve drain.
Isolaon Valve
Pressure Relief Valve