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Armstrong 3760 Pro Series Installation And Operating Instructions Manual

Pressurisation equipment
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Installation and
operating
instructions
3760 Pro Range
Pressurisation Equipment
3760 Pro 2MP 60Hz
3760 Pro 2HP 60Hz
File No: 37.200
Date: july 10, 2023
Supersedes: new
Date: new

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Summary of Contents for Armstrong 3760 Pro Series

  • Page 1 Installation and operating instructions 3760 Pro Range Pressurisation Equipment 3760 Pro 2MP 60Hz 3760 Pro 2HP 60Hz File No: 37.200 Date: july 10, 2023 Supersedes: new Date: new...

  • Page 3: Table Of Contents

    contents Pressures in A Sealed System Operation About this Manual Fault Codes Conventions used in this Manual Shutdown procedure Typography Start-up Procedure Where to find more Information Maintenance Equipment Overview Visual Inspection Principal of Operation (Topup Only) Interrogate Controller Installation Test Unit Operation Pipe Connections Check Float Valve Operation...

  • Page 4: Pressures In A Sealed System

    i nstall at ion & 3760 Pro Range o perat ing in str uct ion s Pressurisation Equipment Pressures in A Sealed System Below is an overview of how the settings on a pressurisation unit must be considered for normal operation. Close, conflicting or overlapping settings will cause system instability and nuisance alarm conditions.

  • Page 5: About This Manual

    For further information please visit the Flamco Limited Website at the following URL: Where to find more Information https://flamcogroup.com/uk-en For further information please visit the Armstrong Fluid Technology Website at the following URL: Alternatively, please contact the Flamco Limited office using the details below: www.armstrongfluidtechnology.com...

  • Page 6: Equipment Overview

    insta ll at ion & 3760 Pro Range o pera t in g in str ucti on s Pressurisation Equipment Equipment Overview Equipment Overview Equipment Overview The function of this pressurisation unit is to provide a means of automated water top-up to sealed heating and The function of this pressurisation unit is to provide a means of automated water top-up to sealed heating and cooling systems.

  • Page 7: Installation

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Installation Installation Installation This pressurisation unit is not designed to be installed in an outdoor environment. The unit must This pressurisation unit is not designed to be installed in an outdoor environment.

  • Page 8: Typical Installation Diagram

    es, pressure reducing valves and RPZ valves must not be installed between the nit and the heating/cooling system. These devices will prevent the pressure i nstall at ion & 3760 Pro Range ding the system pressure. o perat ing in str uct ion s Pressurisation Equipment on unit and expansion vessel should be connected to the system at the same e a neutral pressure reading.

  • Page 9: Clearance And Connection Requirements

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Clearance and Connection Requirements Clearance and Connection Requirements 500mm 500mm 500mm 150mm 500mm...

  • Page 10: Electrical Power Supply

    insta ll at ion & 3760 Pro Range o pera t in g in str ucti on s Pressurisation Equipment Electrical Power Supply Electrical Power Supply Electrical Power Supply Electrical Power Supply Electrical Power Supply This equipment must be electrically isolated before removing the covers. Cables connected to the volt free This equipment must be electrically isolated before removing the covers.

  • Page 11: Micro Controller

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Micro Controller Micro Controller Micro Controller Fault contacts Fault contacts Fault contacts There are 6 volt free fault contacts which can be used for connection to a BMS system, located on terminals 1- 12 on the digital controller.

  • Page 12: Commissioning

    Pre-Commissioning Checklist be covered by the warranty. It is highly recommended to have this equipment commissioned by an Armstrong approved engineer. Any It is highly recommended to have this equipment commissioned by a Flamco approved engineer. It is highly recommended to have this equipment commissioned by a Flamco approved engineer.

  • Page 13: Controller Overview

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Controller Overview Controller Overview Controller Overview Controller Overview The following image shows the front of the pressurisation unit digital controller. 4 buttons are provided for The following image shows the front of the pressurisation unit digital controller.

  • Page 14: Controller Programming

    insta ll at ion & 3760 Pro Range o pera t in g in str ucti on s Pressurisation Equipment Controller Programming Controller Programming Controller Programming Do not alter any settings without first understanding the implications of doing so. Incorrect Do not alter any settings without first understanding the implications of doing so.

  • Page 15: Program Parameter List

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Program Parameter List Program Parameter List The table below gives details of all menu items, in the order that they will appear: The table below gives details of all menu items, in the order that they will appear: Default Menu Item...
  • Page 16 i nstall at ion & 3760 Pro Range o perat ing in str uct ion s Pressurisation Equipment Default Menu Item Function Value The cumulative number of pump starts for pump 2. This is a cumulative counter, the value of which cannot be modified. If using the PUMP 2 COUNT engineer’s code, the counter can be reset to zero by holding the (MUTE) Default...
  • Page 17 3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s The following settings are for experienced engineers only. Incorrect The following settings are for experienced engineers only. Incorrect configuration of these settings can The following settings are for experienced engineers only.

  • Page 18: Hydraulic Commissioning

    insta ll at ion & 3760 Pro Range o pera t in g in str ucti on s Pressurisation Equipment Hydraulic Commissioning Hydraulic Commissioning Hydraulic Commissioning Hydraulic Commissioning Hydraulic Commissioning 1. Float Valve Setting 1. Float Valve Setting 1. Float valve setting 1.
  • Page 19 3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s ate the bleed screw on the pump. The following diagrams show examples of typical bleed screw locations for Locate the bleed screw on the pump.
  • Page 20 i nstall at ion & 3760 Pro Range o perat ing in str uct ion s Pressurisation Equipment If the pump has a plastic bleed screw like the one shown below, do not use excessive force or If the pump has a plastic bleed screw like the one shown below, do not use excessive force or attempt attempt to use any tools to turn it as this may damage the pump casing.

  • Page 21: Balancing Valve Setting

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s 3. Balancing Valve Setting 3. Balancing Valve Setting 3. Balancing Valve Setting 3.

  • Page 22: Forcing Pumps To Run

    insta ll at ion & 3760 Pro Range o pera t in g in str ucti on s Pressurisation Equipment 4.Forcing Pumps to Run 4.Forcing Pumps to Run 4. Forcing Pumps to Run Turn on the power supply to the digital controller and wait for the system pressure Turn on the power supply to the digital controller and wait for the system pressure to appear on the Turn on the power supply to the digital controller and wait for the system pressure to appear on the display.

  • Page 23: Testing

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s 6. Testing 6. Testing To test the operation of the pressurisation unit while connected to the system, the system pressure must be To test the operation of the pressurisation unit while connected to the system, the system pressure must be lowered lowered slowly to simulate a minor leak.

  • Page 24: Operation

    insta ll at ion & 3760 Pro Range o pera t in g in str ucti on s Pressurisation Equipment Operation Operation Operation Operation Once commissioned, the pressurisation unit should operate without any user intervention. Once commissioned, the pressurisation unit should operate without any user intervention. Once commissioned, the pressurisation unit should operate without any user intervention.

  • Page 25: Shutdown Procedure

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Shutdown procedure Shutdown procedure The pressurisation unit must be shut-down during any of the following scenarios: The pressurisation unit must be shut-down during any of the following scenarios: •...

  • Page 26: Maintenance

    insta ll at ion & 3760 Pro Range o pera t in g in str ucti on s Pressurisation Equipment Maintenance Maintenance Due to variations in operating conditions, and the varying loads placed on pressurisation units, it is not feasible to provide accurate predictions of component lifespan.

  • Page 27: Check Float Valve Operation

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Check Float Valve Operation Check Float Valve Operation To test the operation of the break tank float valve, first ensure that the break tank overflow has a suitable path to drain.

  • Page 28: Wiring Diagram

    i nstall at ion & 3760 Pro Range o perat ing in str uct ion s Pressurisation Equipment Wiring diagram Wiring diagram © 2023 aalberts hydronic flow control. All rights reserved. We reserve the right to change designs and technical specifications of our products. Page 30 / 40...

  • Page 29: Troubleshooting

    Review unit selection The unit is undersized for the system Review unit selection The FLOOD LIMIT time is too short. Consult Armstrong The FLOOD LIMIT time is too short. Consult Armstrong © 2023 aalberts hydronic flow control. All rights reserved.
  • Page 30 i nstall at ion & 3760 Pro Range o perat ing in str uct ion s Pressurisation Equipment Symptom Problem Solution The PUMP TYPE option is set Review PUMP TYPE setting incorrectly. P1 and/or P2 FAIL is displayed The relevant pump has failed Replace pump P2 FAIL is displayed but the unit The PUMPS NUMBER option is...
  • Page 31 3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Symptom Problem Solution The wrong/no flow restrictor is Check float valve flow restrictor installed in the float valve (mini and selection (mini and midi units only) midi units only)

  • Page 32: Warranty Details

    If the unit is identified with a manufacturing defect, then no charge is made for correcting the defect. The Armstrong equipment is clearly marked, where applicable, with a unique serial number, allowing traceability to both individual model configuration and the engineer or site responsible for the build and test.

  • Page 33: Notes

    3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Notes...
  • Page 34 i nstall at ion & 3760 Pro Range o perat ing in str uct ion s Pressurisation Equipment Notes...
  • Page 35 3760 Pro Range i nsta l l a t i o n & Pressurisation Equipment o p er at i n g i n str u cti o n s Notes...
  • Page 36 t o r o n t o 23 bertrand avenue, toronto, ontario, canada, m1l 2p3 For further information on the 3760 Pressurisation unit range +1 416 755 2291 or to download individual product data sheets please visit: b u f fa lo www.armstrongfluidtechnology.com/en-gb/ 93 east avenue, north products-and-services/heating-and-cooling/...

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