Armstrong The Brain DRV25 Manual
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Armstrong The Brain DRV25 Manual

Digital recirculation valve
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The installation and service must be performed by a qualified installer.
For further information, please call our technical department Toll Free at 1-888-468-4673.
Recirculating Valve
E357437
Armstrong International
221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA
armstronginternational.com/brain
The Brain
DRV25
Digital Recirculation Valve
®
1
Keep this manual with installation
for future reference.

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Summary of Contents for Armstrong The Brain DRV25

  • Page 1 The installation and service must be performed by a qualified installer. For further information, please call our technical department Toll Free at 1-888-468-4673. Recirculating Valve E357437 Armstrong International Keep this manual with installation 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA for future reference. armstronginternational.com/brain...

  • Page 2: Table Of Contents

    System Performance ........... 30 Preventative Maintenance and Fitting Spare Parts............31 DRV25 Spare Parts .......... 32 Disassembly of the PCBA from the Front Cover ............34 PCB Connections ..........35 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 3: Introduction

    Introduction The Brain DRV25 is a registered trademark of Armstrong Hot Water Group, a division of Armstrong International. ® DRV25 features Rada Technology, Rada is a registered trademark of Kohler Mira Limited of Cheltenham, England. The DRV25 is a digital recirculating valve for use as part of a warm water recirculation system within a commercial installation.

  • Page 4: General Advisory

    Water must have levels of chloramine / chlorine lower than or equal to 4mg/l (ppm) for continual usage. Data Storage Armstrong International shall not accept liability in contract, tort (including negligence or otherwise) for any loss of profits, business or anticipated savings, or loss or corruption of data, or any indirect or consequential loss arising out of the customer's use of DRV25.

  • Page 5: Standards And Codes

    Bluetooth SIG, Inc. et Kohler Mira Ltd les utilise ® sous licence. Les autres marques déposées et noms commerciaux appartiennent à leurs propriétaires respectifs. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 6: Single Drv25 Pack Contents

    Single DRV25 Pack Contents 1 x DRV Digital Recirculation Valve 4 x Duracell High Power Lithium CR2 (3V) Batteries Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 7: Drv25 Dimensions

    DRV25 Dimensions 6-5/6″ 5-3/16″ (160 mm) (132 mm) 9-1/16″ (230 mm) 6′ (1.8 m approx) power cable 1-5/8″ length (42 mm) Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 8: Specifications

    Switched type 3 Amp (no plug), 15 Amp Grounding-type receptacle (plug). Battery 4 x Duracell High Power Lithium CR2 (3V) Duty Cycle Continuously rated Overvoltage Category II Classification Pollution Degree 2 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 9: Default Settings

    Reference Drawing Number: ________________________ Armstrong Model Number: _________________________ Armstrong International – Hot Water Group 221 Armstrong Blvd., Three Rivers, Michigan 49093 - U.S.A. Phone: (269) 279-3602 • Fax: (269) 279-3130 armstronginternational.com © 2019 Armstrong International, Inc. The Installation Detail Form (IDF) is available to download at www.armstronginternational.com/brain...

  • Page 10: Installation

    The Brain® DRV25 NE DOIT être installée que dans ces conditions. Ces dimensions de l’espace sont recommandées pour des 2″ besoins de maintenance. 2-5/8″ (100 mm) Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 11: Installation Requirements

    Inlet and outlet threaded joint connections should be made with PTFE thread sealing tape or liquid sealant. Do not use oil-based, non-setting joint compounds. To eliminate pipe debris it is essential that supply pipes are thoroughly flushed before connection to the DRV25. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 12: Piping Diagrams

    - Legend - Thermometer Isolation Valve Mixed Flow Swing Check Valve* *Orientated for piping schematic detail only. Must be installed in horizontal plane. Items are installer Outlet supplied Outlet Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 13 - Legend - Thermometer Isolation Valve Swing Check Valve* Mixed Flow *Orientated for piping schematic detail only. Must be installed in horizontal plane. Outlet Items are installer supplied Outlet Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 14 - Legend - Thermometer Isolation Valve Swing Check Valve* Mixed Flow *Orientated for piping schematic detail only. Must be installed in horizontal plane. Outlet Items are installer supplied Outlet Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 15: Installation - Drv25

    Ensure the LED on the DRV goes through the ® ® ® initial power up sequence. THE BRAIN THE BRAIN THE BRAIN DRV25 DRV25 DRV25 Commission the DRV25 and recirculation system using the following instructions... Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 16: Commissioning

    Note! Ensure Bluetooth is enabled on your device. Note! The “SAGE by Armstrong” mobile app is ® available free to download from the Apple App Store and Google Play Store. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 17 Periodically connect to the DRV25 to re-synchronise the date and time, especially post-daylight savings dates for your installation location. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 18: Mobile App

    Make sure your mobile device is within Bluetooth range and that Bluetooth is enabled. Identify the DRV25 on the SAGE mobile app to connect to and tap the corresponding product. ® Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 19: Dashboard

    The mixed water (outlet) temperature as well as the hot water supply inlet and system return inlet temperatures are displayed and refreshed every few seconds. The DRV25 setpoint is also displayed for reference. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 20: Configure Setpoint

    This temperature setting will be the point at which the DRV25 alarms and reverts to recirculation mode due to an over temperature condition. Tap on the Save button to transfer the new settings to the DRV25. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 21: Options

    Redémarrage - Oblige le DRV25 à redémarrer. Cette opération va éventuellement aboutir à la libération d’une eau très chaude. Cette fonctionnalité peut servir à corriger certains cas d’erreurs. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 22: Profile Settings

    Profile Settings The Units of temperature measurement can be changed to °F / °C as required. Paired users to the DRV25 can be managed as required. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 23: Devices

    Tap on the red ‘X’ to disconnect the current DRV25 connection. A subsequent tap will delete the DRV25 pairing from the mobile app. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 24: Thermal Disinfection

    Check with local water authorities with regard to water temperature limitations to drain. Failure to complete a sufficient cool down of the blend circuit may result an Error Temp shut down to full cold. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 25 In the event of failing to cool the DRV25, an automatic cool down period of 5 minutes will take effect. FULL COLD Max. ALERT Above Setpoint Setpoint Setpoint Default Below Setpoint Min. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA ALERT armstronginternational.com/brain Cold...
  • Page 26 EMERGENCY STOP! - Tap Abort* at any time to stop the cycle. ARRÊT D’URGENCE! - Appuyer sur le bouton Annuler* à tout moment pour interrompre le cycle. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 27 If Abort is used when the cycle is disinfecting, the DRV25 switches to full cold / recirculation. Use the mobile app to change the valve state back to ON and make sure the blend circuit is at a safe temperature before allowing any outlets to be used. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 28: Disinfection Quick Start Guide - 1

    Stop stopwatch or note the time of day. The time difference is the future Disinfection Timeout period. Change Disinfection Timeout to new value. Tap Save. For all further disinfection cycles, use Quick Start Guide - 2. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 29: Disinfection Quick Start Guide - 2

    également affecter la période de temporisation de la désinfection. Reprendre toutes les étapes présentées dans le Guide de démarrage rapide - 1 pour garantir un cycle de désinfection fiable pour le système. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 30: Connectivity

    SAGE ® SAGE is an optionally selected control module from Armstrong which enables an interface with Building Automation ® Systems (BAS) which utilize Modbus, Bacnet™ or LonWorks™ protocols via the use of specific ProtoCessor cards. also has an ethernet port and operates as a web server for remote network access.

  • Page 31: Preventative Maintenance And Fitting Spare Parts

    Each DRV25 has a serial number that is maintained on file with the technical department at Armstrong. For any installation, operation, maintenance or technical support details not covered in this guide, please call our Technical Department quoting the model and / or serial number.

  • Page 32: Drv25 Spare Parts

    • Faire en sorte que l’entrée de l’eau chaude se refroidisse suffisamment pour limiter le risque de blessure à travers le contact avec le tuyau chauffant ou le DRV. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 33 D112643 Front Cover Assembly D112646 Middle Case D112645 Drive Mechanism Assembly D112646 Rear Case D112645 D112646 D112646 D112643 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 34: Disassembly Of The Pcba From The Front Cover

    4 x CR2 - 3V Note! Retain Batteries if replacing cover. Step 3 Note! Disconnect the battery clip and capacitive touch sensor from PCB prior to remove the PCB from rear cover. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 35: Pcb Connections

    PCB Connections Motor Opto Loom (CN6) Thermistors (CN5) Mains Power (CN8) Battery Backup (CN4) Modbus Connector (CN7) Modbus End of Line Termination (CN10) Touch Sensor Connector (CN12) Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 36: Drive Mechanism Assembly

    Drive Mechanism Assembly Spare Parts D112645 Drive Mechanism Assembly D112648 Seal Cartridge Assembly D111635 Thermistor Loom D112645 D112648 D111635 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 37 Step 1 Step 2 Step 3 Step 4 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...
  • Page 38 A, B and C. N’utiliser que des lubrifiants faits à base de silicone sur les joints A, B, et C en caoutchouc noir. Seals shown 1:1 when printed at Full Scale Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 39: Drive Assembly

    Drive Assembly Spare Parts D111639 Drive Belt D111636 Dual Opto Motor Loom D111638 Stepper Motor Assembly D112645 Drive Mechanism Assembly D112645 D111639 D111636 D112645 D111638 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 40: Troubleshooting

    “Blend circuit does not fully return to normal within the Disinfection Timeout period” ............... 49 “Unable to adjust outlet temperature” ..........50 “Water leaking from DRV25” ..............51 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 41: Drv25 Led Indications

    THE BRAIN THE BRAIN THE BRAIN THE BRAIN THE BRAIN THE BRAIN DRV25 DRV25 DRV25 DRV25 DRV25 DRV25 DRV25 DRV25 DRV25 DRV25 DRV25 DRV25 Thermal Disinfection Emergency Mode (Recirculation) Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 42: Drv25 Errors

    Lithium CR2 batteries are used (P/N - D112402). If the battery terminals show signs of corrosion or damage, replace: P/N - D112643 Front Cover Assembly with PCBA see pages 33-35. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 43: Emergency Mode / Motor Error

    2. P/N - D111639 Drive Belt 3. P/N - D112643 Front Cover Assy with PCBA 4. P/N - D111638 Stepper Motor 5. P/N - D112645 Drive Mechanism Assy see pages 33-39. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 44: Pcb Errors (Terminal)

    • RAM error • Real time check error • Flash error • Algorithm error • Controller fault • Stack error • Scheduling error • Capacitive touch sensor error Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 45: Open Circuit Thermistor

    Debris in the internal mechanism • Internal mechanism damaged / disconnected • Thermistor loom damaged If the problem persists, replace the thermistor loom. P/N - D111635 Thermistor Loom see pages 33-38. Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 46: Common Faults

    THE BRAIN DRV25 Make sure mixed return is flowing correctly to water heater. Separator seal Check separator seal & replace if deteriorated Return to Hot Water Supply Inlet Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 47: Outlet Temperature Fluctuates More Than ± 2°F

    Make sure supply pressures are balanced. Check for the following: • Air locks • Blocked strainers • Closed valves ® THE BRAIN DRV25 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA Return to Hot Water Supply Inlet armstronginternational.com/brain...

  • Page 48: Sage ® Mobile App Displays An Over Temperature Error

    Check water supplies are connected to the correct inlet ports. Check inlet supply temperature ® THE BRAIN DRV25 Reset DRV25 Turn power off for 10 seconds and restart. Return to Hot Water Supply Inlet Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 49: Blend Circuit Does Not Fully Return To Normal Within The Disinfection Timeout Period

    • Early abort of disinfection cycle. • Use of a dump valve to speed up cool down time. ® THE BRAIN DRV25 Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA Return to Hot Water Supply Inlet armstronginternational.com/brain...

  • Page 50: Unable To Adjust Outlet Temperature

    Make sure mixed return is flowing correctly to water heater. Check for the following: • Air locks ® • THE BRAIN Blocked strainers DRV25 • Closed valves Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA Return to Hot Water Supply Inlet armstronginternational.com/brain...

  • Page 51: Water Leaking From Drv25

    DRV body failure DRV25 replacement required. Check all DRV seals Check all internal seals for wear and / or damage. Clean and refit seals (see page 37). Armstrong International 221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA armstronginternational.com/brain...

  • Page 52: Limited Warranty And Remedy

    Armstrong products, notice of any warranty or other claim relating to the products must be given in writing to Armstrong: (i) within 30 days of last day of the applicable warranty period, or (ii) within 30 days of the date of the manifestation of the condition or occurrence giving rise to the claim, whichever is earlier.

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