Water Temperature Control—Recirculation Systems—Digital

DRV80R

DRV 80R is a fully digital recirculation valve (DRV) for "point of source" or mechanical room based installation. DRV 80 is designed specifically to be the primary water temperature controller in a continuously pumped recirculating hot water system.

Model DRV 80R is a single installer/operator programmable "Plug and Play" solution for systems which experience diverse user draw-off between 0 to 150 GPM and includes a recirculation system return manifold assembly.

Operational Specifications

The enhanced accuracy possible with DRV80 digital technology, combined with its data input/output communication capability equals:

• Accurate control of blended water drawn from the system at a point of use typically within +/-2°F at draw off points a minimum of 5m downstream of mixing valve during consistent system demand periods
• Operational water pressure of 10 -150 psig
• Minimum valve inlet to outlet temperature requirement (system recirculation temperature loss) of 2°F
• 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
• Maintain a consistent system "idling" temperature and control "temperature creep" without the use of a manual throttling device or balance valve.
• System shall not require a temperature activated pump shut-off device (aquastat).
• Programmable set point range of 100-160°F (37-71°C) plus full hot/full cold
• Ability to thermally disinfect at recommended temperatures
• Programmable 1st level hi/lo temp alarm display
• Programmable temperature error level for safety shutdown

Technical Specifications

• 100-240 V Power supply (12 V AC output)
• 2 x 4-20 mA current loop interfaces:
Input: Setpoint Selection
Output: Measured Blend Temperature
• Relay output: 24V DC/240 V AC SPCO
Error Relay: Activated in error mode
• Serial Connection Data Port*
• Optional External Network Adapter*
• Stainless Steel Construction
• 3” NPT Connections (optional 2” adapter)
• Recirculation system return manifold assembly.
2" System Return Check Valve
1" Return to Heater Line Check
2" Return to Heater Line Ball Flow Indicator
3" CW inlet Check Valve
• ASSE 1017 and CSA B125 Certified