Data Sheet - The Brain® Model DRV40

Armstrong Hot Water Group, 221 Armstrong Blvd., Three Rivers, MI 49093 – USA Phone: 269-279-3602, Fax: 269-279-3130 armstrong international.com

Water Temperature Control - Recirculation Systems

Digital

The Brain

®

Model DRV40

DRV40 Digital Recirculation Valve (DRV) designed specifically to be the primary water temperature controller in a continuously pumped circulating hot water system.

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

Technical Specifications

• 100-240 V AC

• Polymer Electronics Enclosure

• Stainless Steel Valve Construction

• Lead Free compliant

• Maximum inlet HW supply temperature 185F (85C)

• Minimum Circulation Flow - 5 GPM/19 LPM

• Minimum System Draw Off - 0

• ASSE 1017, CSA B125 and CE Certified

• Operational water pressure of 10 -150 psig

• Display in °C or °F

• Shipping weight 10 lbs (4.5 kg)

Connectivity

SPCO Relay Outputs – Relay which is energized during operation.

LCD Display – Provides information on set point, delivered temperature, error codes and alert conditions.

RS485 Serial Port – Connects the DRV to either BrainScan or

Modbus.

BrainScan ® – BAS interface for Modbus, Bacnet™ or LonWorks™ plus operates as a web server.

Modbus – DRV can be configured to communicate directly with

Building Automation Systems (BAS) using Modbus protocols.

For a submittal drawing, refer to D41578.

1.5”

Hot Water

Inlet

10.6”

(268 mm)

1.5”

Mixed Water

Outlet

5.7”

(144 mm)

6.8”

(172 mm)

Recirculation Systems - Digital (gpm)

Model

5

Pressure Drop (psi)

10 15

DRV40 48 70 85

20

98

3.3”

(83 mm)

Minimum System Draw-Off Maximum Flow @7 .5 ft/sec .

0 41

1.5”

Cold Water

Inlet

9.4

(238 mm)

C

V

22

All dimensions and weights are approximate. Use certified print for exact dimensions. Design and materials are subject to change without notice.

Armstrong Hot Water Group, 221 Armstrong Blvd., Three Rivers, MI 49093 – USA Phone: 269-279-3602, Fax: 269-279-3130 armstrong international.com

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