Water Temperature Control—Recirculation Systems—Digital (The Brain® DRV40R)

The Brain^® DRV40R

DRV40R Digital Recirculation Valve (DRV) designed specifically to be
the primary water temperature controller in a continuously pumped
circulating hot water system. DRV40R is supplied with a recirculation
return manifold as shown.

Digital technology provides enhanced water temperature control
accuracy which resists zero system demand “Temperature Creep” without
the use of a manual throttling valve or a temperature activated pump
shut-off device (aquastat).

Operational Specifications

• +/-2°F water temperature control at points of use 25’ downstream during demand
• +/- 2°F water temperature control at the DRV during zero system demand “idling” periods
• 2°F minimum valve inlet to outlet temperature requirement (system recirculation temperature loss)
• Automatic shutoff of hot water flow upon cold water inlet supply failure
• Automatic shutoff of hot water flow in the event of a power failure
• Programmable set point range of 81-158°F (27-70°C)
• Programmable thermal disinfection mode
• Programmable 1st level hi/lo temp alarm display
• Programmable temperature error level for safety shutdown

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