Page 1: ...tion pump provides the precise amount of hot water needed based upon heating load A loop pump heat exchanger variable speed injection pump and electronic controls are contained in an attractive cabinet that can be directly connected to A Rinnai tankless water heater Each unit has the necessary valves required for servicing the tankless water heater as well as a connection for an expansion tank The...
Page 2: ...60Hz 1Ph grounded outlet This device draws less than 3 amps and does not need to be on a separate circuit The cord can be removed and the unit hard wired by a qualified electrician Follow all local electrical codes The VSMR includes a pre wired 24VAC power supply for the controls Connect your heat only thermostat to the low voltage terminal strip provided inside the cabinet For complex zoning ensu...
Page 3: ...sary When the closed loop system is filled close both drain valves used to fill the system and open the isolation valve located between them The tankless water heater will operate during a heat call cycle and for domestic hot water The VSMR is self calbrating The control automatically determines supply temperature LED Diagnostics are available for fine tuning the system See Attached Table Troubles...
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