Digital Hot Water Generation and Control SolutionsDigital Hot Water Generation and Control Solutions...

Digital Hot Water Generation and

Control Solutions

Armstrong blends revolutionary digital water temperature control technology with modular high efficiency semi-instantaneous condensing water heater design to deliver Flo-Ēco® - an application engineered gas fired water heating and control solution.

The Armstrong intelligent system design first selects The Brain - Model DRV80 as the digital system controller. DRV80 will coordinate and direct the re-circulation system flow through the water heating component and the distribution out to and back from the building re-circulation system.

The maximum simultaneous hot water system demand calculation used to select the DRV80 will also be influential in selecting the number of high efficiency water heating 199,000 btu - 50 gallon capacity modules required to sustain the buildings peak hot water demand period.

The Flo-Ēco individual water heating modules are compact and designed to ease mechanic room ingress. The modules have been independently tested to ANSI standard Z21.10.3 and certified to perform at 97% thermal efficiency.

Each module can be seamlessly vertically integrated, typically to a maximum of three onsite inside a single space saving footprint.

Flo-Ēco - Engineered Hot Water Generation and Digital Control Solutions are supplied with a complete performance guarantee and an inclusive five-year warranty on all component parts.

Armstrong Digital Technology

• Powered by low voltage electronics

• Digital Mixing technology obsoletes dated Thermostatic Mixing Valves

• Programmable high/low temperature alert function

• Programmable hot water system safety shutdown

• Component self-diagnostics

• Performance monitoring, data logging and reporting

• Integral building management system connectivity

• Simplified system commissioning

Armstrong Heat Exchange Technology

• 97% thermal efficiency tested under ANSI Z21.10.3

• 97% thermal efficiency at demand flow rates as low as 3 gpm

• Semi-instantaneous design reduces footprint

• Modular “stacked” system allows you to add btu’s and storage to meet demand

• Modular system provides redundancy

• Integral Digital Re-Circulating Valve maintains system temperatures while water heaters recover

• Meets Federal Energy Management (FEMP) qualifications

• Replaceable tank liner extends service life

3Armstrong Hot Water Group, 221 Armstrong Blvd., Three Rivers, MI 49093 – USA Phone: 269-279-3602, Fax: 269-279-3130

armstronginternational.com

Digital Hot Water Generation and Control Solutions

FE - 1 Single Module

FE 3 - DMC - BS1

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


4

ASSE 1017 CSA B125 and CE certified

Outlet Temperature to system +/- 2°F/1°C

4-20mA Connection Port

Hot water shutoff upon power failure

Serial data port for BAS Module (BrainScan™) connectivity. Transmits/receives all field programmable and LED display features

IRDA Port for PC programming

Field programmable Set point High temperature alert High temperature hot water shutoff Thermal disinfection

Battery back-up for emergency shutdown and default setting retention

316L Stainless Steel lead free construction

LED Display

Indicates Set point °C or °FOperating Temp °C or °F

Integral relay for auxiliary connection (alarm, solenoid)

Self diagnostics. Digital valve runs internal component check and reports out of specification performance on display

0 - 188 GPM Flow Capacity

Digital Controller(DRV80)

Flo-Ēco® Water HeaterOne Single Module

Operational Specifications• 199,000 btu/hr• Storage: 50 gallons (189 liters)• LP or natural gas• Minimum 97% thermal efficiency rating• Modular design• 290 GPH recover at 80°F ΔT (1,758 LPH Recovery at

44°C ΔT)• 232 GPH recovery at 100°C ΔT (879 LPH recovery at

56°C ΔT)

Technical Specifications • ASME rated temperature and pressure relief valve• Pre-mix matrix gas burner• Carlin E-Z Temp 9000C temperature controller• Gas inlet flow pressure:

Minimum 3.5” WC (8.72 mbar) Maximum 14.0” WC (34.9 mbar)

• Electrical: 120 vac, 60 Hz, 15 amp service• Shipping Weight: 600 lbs (272 kg)

ANSI Z21.10.3b and CSA 4.3b-2008 compliant.

For a fully detailed certified drawing, refer to D22258.




ModelRecovery Rate Btu/h

InputShipping Weight

80°F Rise 44°C Rise 100°F Rise 56°C Rise Gallon Liters lb kgFlo-Ēco 1 290 GPH 1,098 LPH 232 GPH 879 LPH 199,000 50 189 600 272Flo-Ēco 2 580 GPH 2,196 LPH 464 GPH 1,758 LPH 398,000 100 379 1,200 544Flo-Ēco 3 870 GPH 3,294 LPH 696 GPH 2,637 LPH 597,000 150 567 1,800 816

FE - 1



6

Flo-Ēco® Water HeaterTwo Single Modules


44°C ΔT)• 464 GPH recovery at 100°C ΔT (1,758 LPH recovery at

56°C ΔT)



• Electrical: 120 vac, 60 Hz, 15 amp service• Shipping Weight: 1,200 lbs (544 kg)






FE - 2

Flo-Ēco® Water HeaterThree Single Modules



56°C ΔT)








Hot Water System Monitoring




FE - 3



8

Hot Water System SizingFlo-Ēco® Hot Water Generation and Digital Control Solutions are designed to be installed as complete systems inclusive of both the hot water generation and hot water system control components.

It is important to understand the impact to the hot water system offered by The Brain – Model DRV80, particularly with respect to maintaining system temperatures while the hot water generation component is in recovery.

Armstrong technical support will have sizing tools available to assist with the selection of the requisite components so that optimal performance levels are achieved.

Step 1: Establish the recirculating hot water systems peak demand flow rate.

Step 2: Establish the recirculating hot water systems set point (typically 120°F)

Step 3: Establish how long the system recirculating hot water system will need to sustain peak demand (typically 30 – 60 minutes).

Step 4: Establish the water heater set point (typically 140-160°F)

Step 5: Select the number of Flo-Ēco Water Heater Modules required to both generate and provide a stored supply so that at the conclusion of the selected peak demand time period (Step 3) the recirculating hot water system does not drop below set point (Step 2).

Step 6: Select the Digital Mixing Center (DMC). It will be supplied as a pre-piped assembly specially configured to integrate onsite with either the double or a triple (plus) module Flo-Ēco water heating system selected in Step 5.

Step 7: When a maximum of six Flo-Ēco Water Heater Modules is reached add an optional Hot Water Storage Tank.

Step 8: If a Hot Water Monitoring System is desired add BrainScan. BS1 = temperature. BS2 = temperature and pressure.

DMC*

*FE 2 and above.

SPECIFICATION MATRIX

199,000 btu50 gal Storage

Module

Digital Mixing Center

“The Brain”

SupplementalStorage

Tank

BrainScan Hot Water Monitoring

System

FE 1 FE 1FE 2 FE 2FE 3 FE 3

allowable combinationsFE 2 - FE 2FE 3 - FE 1FE 3 - FE 2FE 3 - FE 3

119200400600

BS 1 = TemperatureBS 2 = Temperare & Pressure

Bank 1 Bank 2



Digital Hot Water Generation and Control SolutionsModel FE2-DMC Two Temperature System Piping Schematic

Model FE3-FE3-DMC Two Temperature System Piping Schematic

Piping schematics for all Digital Hot Water Generation and Control Solution models available upon request.

Flo-Ēco® Water HeaterTwo Single Modules with pre-piped Digital Water System Controller - The Brain Model DRV80



56°C ΔT)





Operational Specifications - Digital Water Temperature Controller - The Brain Model DRV80

• Accurate control of water temperature typically within +/-2°F at draw off points across the system

• 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 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 service (aquastat)

• Programmable set point range of 81-158°F (29-71°C)• Ability to thermally disinfect at recommended

temperatures• Programmable 1st level hi/low temp alarm display• Programmable temperature error level for safety

shutdown

Technical Specifications - Digital Water Temperature Controller - The Brain Model DRV80

• 100-240 V Power Supply (12 vac output)• 2 x 4-20 mA curent loop interfaces:

Input: Setpoint Selection Output: Measured Blend Temperature

• Relay output: 14V DC/ 240 V AC SPCO• Error Relay: Activated in alarm or error mode• Stainless Steel Construction (DRV80 BrainScan

connection port for BAS/Web Interface• ASSE 1017, CSA B125 and CE Certified

Two Single Modules with pre-piped Digital Water System Controller - The Brain Model DRV80

Model shown indicates BrainScan 1 BAS compatible and/or Web enabled Hot Water Monitoring System.



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FE 2 - DMC - BS1

Digital Mixing Center (DMC)

For a fully detailed certified drawing, refer to:FE2-DMC D26985FE2-DMC-BS1 (shown) D27331FE2-DMC-BS2 D35453







Flo-Ēco® Water HeaterThree Single Modules with pre-piped Digital Water System Controller - The Brain Model DRV80


44°C ΔT• 464 GPH recovery at 100°C ΔT (1,758 LPH recovery at

56°C ΔT)





Operational Specifications - Digital Water Temperature Controller - The Brain Model DRV80

• Accurate control of water temperature typically within +/-2°F at draw off points across the system

• 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 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 service (aquastat)

• Programmable set point range of 81-158°F (29-71°C)• Ability to thermally disinfect at recommended

temperatures• Programmable 1st level hi/low temp alarm display• Programmable temperature error level for safety

shutdown

Technical Specifications - Digital Water Temperature Controller - The Brain Model DRV80

• 100-240 V Power Supply (12 vac output)• 2 x 4-20 mA curent loop interfaces:

Input: Setpoint Selection Output: Measured Blend Temperature

• Relay output: 14V DC/ 240 V AC SPCO• Error Relay: Activated in alarm or error mode• Stainless Steel Construction (DRV80 BrainScan

connection port for BAS/Web Interface• ASSE 1017, CSA B125 and CE Certified

Three Single Modules with pre-piped Digital Water System Controller - The Brain Model DRV80

Model shown indicates BrainScan 1 BAS compatible and/or Web enabled Hot Water Monitoring System



12

Digital Mixing Center (DMC)

FE 3 - DMC - BS1

For a fully detailed certified drawing, refer to:FE3-DMC D26986FE3-DMC-BS1 (shown) D27332FE3-DMC-BS2 D35454








Hot Water System Monitoring

14

BrainScan™ BrainScan™ is an optionally selected control module. BrainScan connects to the BrainScan port on DRV80 and enables a direct onward connection to Building Automation Systems which utilize ModBus, Bacnet™ and LonWorks™ protocols* with an Ethernet port for web access.

BrainScan can receive and communicate the following inputs from The Brain - Model DRV80:

• Set Point• Inlet/Outlet Temperature• Over Temperature Alert

BrainScan can receive and communicate the following self-diag-nostic error messages from The Brain - Model DRV80:

• Over Temperature Error• PCB Error• Thermister Error• Motor Error/Safe Mode• Battery Error

BrainScan is available in two (2) different configuration pack-ages as described below:

BrainScan™ 1Includes remote hot water supply, cold/recirculation water supply and blended water outlet temperature readings. Also gives the ability to remotely change blended water outlet temperature setpoint. Included with both BrainScan™ options is the valve/system graphic.

BrainScan™ 2Provided as BrainScan™ 1 with hot water supply, cold water supply and blended water outlet pressure transmitters.

* Building Automation System “mapping” and related interface procedures required by onsite BAS technical support.



Notes

Armstrong Hot Water Group221 Armstrong Blvd., Three Rivers, MI 49093 - USA Phone: 269-279-3602, Fax: 269-279-3130

armstronginternational.com Bulletin HW-415Printed in U.S.A. - 10/11

© 2011 Armstrong International, Inc.

Armstrong provides intelligent system solutions that improve utility performance, lower energy consumption, and reduce environmental emissions while providing an “enjoyable experience.”

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