Data Sheet - The Brain® Model DRV40
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
1.5”
Mixed Water
Outlet
1.5”
Hot Water
Inlet
1.5”
Cold Water
Inlet
Technical Specifications
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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)
5.7”
(144 mm)
6.8”
(172 mm)
3.3”
(83 mm)
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.
9.4
(238 mm)
10.6”
(268 mm)
For a submittal drawing, refer to D41578.
Recirculation Systems - Digital (gpm)
Pressure Drop (psi)
Model
5
10
15
DRV40
48
70
85
20
98
Minimum System Draw-Off
Maximum Flow @7.5 ft/sec.
CV
0
41
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
armstronginternational.com
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