Armstrong The Brain DRV25 User Manual

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Armstrong International
221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA
armstronginternational.com/brain
System Safety Measures
System safety measures such as the installation of an aquastat linked to the circulating pump which shuts the
pump off if the system exceeds a given temperature setpoint is not required. DRV25 can be programmed to
automatically shut o󰀨 the system hot water supply in the event of an overtemperature condition (may require a
Brain Scan/ SAGE System where available).
Preventative Maintenance and
Fitting Spare Parts
Warning! Isolate power to the DRV25. Ensure that the circulating pump is not
operating.
Avertissement! Couper l’alimenation électrique dans le DRV25. Vérier que la
pompe de circulation ne fonctionne pas.
DRV25 components should be inspected annually, or more frequently where acknowledged site conditions such
as high mineral content water dictate.
Each DRV25 has a serial number that is maintained on le 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.
ESD Handling
Appropriate electrostatic wrist strap or similar preventative damage measures should be taken when handling the
main control PCBA within the product.
Batteries
Batteries are supplied to ensure the DRV switches to Full Cold in the event of a primary power supply failure, they
should not be considered to be a backup power supply.
Battery life is variable depending upon usage. A battery error message appears in the SAGE
®
mobile app when
they require replacing.
Where primary power supply failure occurs regularly or the DRV is installed within a supply system where safety is
critical, the batteries must be changed at least every 12 months as part of an annual maintenance routine.
In noncritical systems or where battery usage is low, longer replacement cycles may be considered up to a maximum
of 5 years.
Note! Care must be taken when removing / replacing the batteries to avoid accidental piercing to the CR2 cells
and / or damage to the DRV25 internal looms/connectors.
Inspection of critical components and / or assemblies
O - Rings / Seals
All ‘wetted’ O -Rings / Seals must be checked or replaced at least every 12 months as part of an annual maintenance
routine. In systems where water quality conditions are poor, more frequent replacement may be required.
Note! Do not use silicone grease on internal seals. Refer to page 38 for how to identify the internal seals.
Strainers
All supply strainers must be thoroughly cleaned at least every 12 months as part of an annual maintenance routine.
Cleaning includes physically taking the strainer screen / basket out of the body and cleaning as well as ushing
water through the body. In systems where water quality conditions are poor, more frequent cleaning may be required.
Thermistors
Remove thermistor loom and clean thermistors with an abrasive pad to remove surface contamination which could
a󰀨ect temperature readings and product performance.

Armstrong The Brain DRV25 Specifications

General

Brand	Armstrong
Model	The Brain DRV25
Category	Control Unit
Language	English