Armstrong 3760 ProDoseVDG 2HP User manual

Installation and
operating
instructions
3760 ProDoseVDG 2HP
Digital Pressurisation
Equipment
File No: 37.208
Date: august 30, 2023
Supersedes: new
Date: new
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 1 / 40
Flexfiller Digital Pressurisation Equipment
Flexfiller Models 280D
Operation & Maintenance Manual

contents
Pressures in A Sealed System 4
About this Manual 5
Conventions used in this Manual 5
Typography 5
Where to find more Information 5
Equipment Overview 6
Principal of Operation 6
Installation 7
Pipe Connections 7
Typical Installation Diagram 8
Clearance and Connection Requirements 9
Electrical Power Supply 10
Micro Controller 11
Fault contacts 11
Commissioning 12
Pre-Commissioning Checklist 12
Controller Overview 13
Controller Programming 14
Customer Parameter List 15
Hydraulic Commissioning 16
1. Float valve setting 16
2. Bleeding Pumps 16
3. Forcing Pumps to Run 18
4. Initial Start-up 18
5. Testing 19
Operation 20
Fault Codes 20
Shutdown procedure 21
Start-up Procedure 21
Maintenance 22
Visual Inspection 22
Interrogate Controller 22
Test Unit Operation 22
Check Float Valve Operation 23
Check Float Switch Operation 23
Check Break Tank Water Condition 23
Check Strainer 23
Check Expansion Vessel Pre-Charge 23
Spare Parts 25
Spare Parts – Controller and Electrical plate
assembly 25
Troubleshooting 26
Maintenance Schedule 29
Warranty Details 30
Warranty - What Is Covered? 30
Warranty - What Is Not Covered? 30
Conditions of warranty 30
Contact Details 30
Statement of compliance 31

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
4
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 6 / 40

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. If in any
doubt please seek advice from a Sealed System professional.
A typical venting allowance is 0.3 bar, added to the static height to give the cold fill pressure.
The Differential setting represents the allowable pressure loss before the pump activates and restores the cold
fill pressure. The Differential setting must not be greater than the system venting allowance. This will ensure
that the system remains fully flooded during normal topup conditions.
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. If in any doubt please
seek advice from a Sealed System professional.
A typical venting allowance is 0.3 bar, added to the static height to give the cold fill pressure.
The Dierential setting represents the allowable pressure loss before the pump activates and restores the cold fill
pressure. The Dierential setting must not be greater than the system venting allowance. This will ensure that the
system remains fully flooded during normal topup conditions.

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
5
About this Manual
This Operation and Maintenance Manual contains all the necessary information to install, commission, operate and
maintain Flexfiller pressurisation equipment.
It is recommended to read all parts of this manual before undertaking any work on the equipment.
Conventions used in this Manual
This manual makes use of symbols to identify key pieces of information. Please take note of the following symbols
and their meaning:
DANGER – Important safety related information intended to prevent injury and/or damage to the
equipment, system or property.
CAUTION - Important information intended to prevent damage to the equipment, system or property.
IMPORTANT - Important information intended to ensure that the equipment functions correctly.
USEFUL – Useful information which may be helpful but is not necessarily required for the unit to
function correctly.
Typography
This manual makes use of dierent typography to identify dierent types of information.
Italics Key words and phrases
(Round Brackets) Used to identify a button on the digital controller
[Square Brackets] A parameter on the digital controller
<Inequality Symbols> A message/fault code displayed on the digital controller
Where to find more Information
For further information please visit the Armstrong Fluid Technology Website at the following URL:
www.armstrongfluidtechnology.com
Alternatively, please contact the Armstrong Fluid Technology oce using the details below:
Phone: [phone]
Email: info@ukservice@armstrongfluidtechnology.com
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 8 / 48
About this Manual
This Operation and Maintenance Manual contains all the necessary information to install, commission, operate
and maintain the Flamco Prestige equipment.
It is recommended to read all parts of this manual before undertaking any work on the equipment.
Conventions used in this Manual
This manual makes use of symbols to identify key pieces of information. Please take note of the following
symbols and their meaning:
DANGER –Important safety related information intended to prevent injury and/or damage to the
equipment, system or property.
CAUTION - Important information intended to prevent damage to the equipment, system or
property.
IMPORTANT - Important information intended to ensure that the equipment functions correctly.
USEFUL –Useful information which may be helpful, but is not necessarily required for the unit to
function correctly.
Typography
This manual makes use of different typography to identify different types of information.
Italics Key words and phrases
(Round Brackets) Used to identify a button on the digital controller
[Square Brackets] A parameter on the digital controller
<Inequality Symbols> A message/fault code displayed on the digital controller
Where to find more Information
For further information please visit the Flamco Limited Website at the following URL:
www.flamco.co.uk
Alternatively, please contact the Flamco Limited office using the details below:
Phone: [phone]
Fax: [phone]
Email: [e-mail] OR [e-mail]

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
6
Equipment Overview
The function of this pressurisation unit is to provide a means of automated water top-up to sealed heating and
cooling systems. The equipment is designed to provide periodic water top-up to compensate for minor losses in
system pressure (e.g. slow leaks, air venting, etc.).
This equipment is not designed to cope with sudden losses of system pressure (e.g. manual draining)
or major water losses (e.g. large leaks). The equipment is also not intended to be used for water
boosting applications.
Principal of Operation
The following schematic shows the internal arrangement of a pressurisation unit:
The pressurisation unit is fitted with a break tank (1) which is filled from the mains water supply (2) via a float
operated valve (3). The break tank is fitted with a warning overflow (4) in case the break tank overfills, and a weir
overflow (5) as the primary backflow protection.
The pressurisation unit is connected into the heating system (6) via an isolation valve (7).
The pressure sensor (8) monitors the system pressure.
If the pressure sensor detects a drop-in pressure, the pump (9a) will pump water from the break tank into the
system. Once the required pressure has been reached, the pump will stop.
On twin pump models, a second pump (9b) is provided. The two pumps will run in a duty/standby/automatic
changeover configuration (i.e. the active pump will alternate with each pump start).
The pump(s) are fitted with non-return valves (10a, 10b) to prevent backflow.
A drain valve (11) is provided for draining down the unit and for commissioning purposes.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 9 / 48
Equipment Overview
The function of this pressurisation unit is to provide a means of automated water top-up to sealed heating and
cooling systems. The equipment is designed to provide periodic water top-up to compensate for minor losses in
system pressure (e.g. slow leaks, air venting, etc.).
This equipment is not designed to cope with sudden losses of system pressure (e.g. manual
draining) or major water losses (e.g. large leaks). The equipment is also not intended to be used
for water boosting applications.
Principal of Operation
The following schematic shows the internal arrangement of a pressurisation unit:
The PressDS Plus unit is fitted with a break tank (1) which is filled from the mains water supply (2) via a
float operated valve (3). The break tank is fitted with an overflow (4) in case the break tank overfills, and a
weir overflow (5) in case the primary overflow fails. Also fitted is an additive tank (14). Additive tank is
filled with either Additive or additive, to add to the system a required mixture is required. To do this two
balancing valves are placed after each of the tanks to control the mixture water (12) and Additive (13).
(See mixture table)
Water is allowed into the Vacuum cylinder through a safety solenoid (18b), a pressure reducing valve (17)
and a special variable bypass valve (16).
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 8 / 40

The function of this pressurisation unit is to provide a means of automated water top-up to sealed heating and
cooling systems. The equipment is designed to provide periodic water top-up to compensate for minor losses in
system pressure (e.g. slow leaks, air venting, etc.).
This equipment is not designed to cope with sudden losses of system pressure (e.g. manual
draining) or major water losses (e.g. large leaks). The equipment is also not intended to be used
for water boosting applications.
Principal of Operation
The following schematic shows the internal arrangement of a pressurisation unit:
The pressurisation unit is fitted with a break tank (1) which is filled from the mains water supply (2) via a float
operated valve (3). The break tank is fitted with a warning overflow (4) in case the break tank overfills, and a
weir overflow (5) as the primary backflow protection.
The pressurisation unit is connected into the heating system (6) via an isolation valve (7).
The pressure sensor (8) monitors the system pressure.
If the pressure sensor detects a drop-in pressure, the pump (9a) will pump water from the break tank into the
system. Once the required pressure has been reached, the pump will stop.
On twin pump models, a second pump (9b) is provided. The two pumps will run in a duty/standby/automatic
changeover configuration (i.e. the active pump will alternate with each pump start).
The pump(s) are fitted with non-return valves (10a, 10b) to prevent backflow.
A drain valve (11) is provided for draining down the unit and for commissioning purposes.

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
7
Installation
This pressurisation unit is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a risk of
flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed / sited
where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of the
pressurisation unit. The conditions at the point of connection to the system must not exceed these
values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before connection to
the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape. If PTFE tape is
used, care must be taken to ensure that the tape does not obstruct the orifice of the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure sensor
from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same point,
to provide a neutral pressure reading. This point of connection should be in the system return, on the
suction side of the circulation pump.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 11 / 48
Installation
This equipment is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a
risk of flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed /
sited where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of
the pressurisation unit. The conditions at the point of connection to the system must not exceed
these values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before
connection to the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape.
If PTFE tape is used, care must be taken to ensure that the tape does not obstruct the orifice of
the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure
sensor from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same
point, to provide a neutral pressure reading. This point of connection should be in the system
return, on the suction side of the circulation pump.
Connections to the return header of the system must be made in the horizontal plane, to prevent
system borne debris entering the equipment. Where 2 connections are required to the system
return header, they must join the header at 2 distinctly separate points at least 500 mm apart
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 11 / 48
Installation
This equipment is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a
risk of flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed /
sited where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of
the pressurisation unit. The conditions at the point of connection to the system must not exceed
these values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before
connection to the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape.
If PTFE tape is used, care must be taken to ensure that the tape does not obstruct the orifice of
the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure
sensor from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same
point, to provide a neutral pressure reading. This point of connection should be in the system
return, on the suction side of the circulation pump.
Connections to the return header of the system must be made in the horizontal plane, to prevent
system borne debris entering the equipment. Where 2 connections are required to the system
return header, they must join the header at 2 distinctly separate points at least 500 mm apart
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 11 / 48
Installation
This equipment is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a
risk of flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed /
sited where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of
the pressurisation unit. The conditions at the point of connection to the system must not exceed
these values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before
connection to the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape.
If PTFE tape is used, care must be taken to ensure that the tape does not obstruct the orifice of
the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure
sensor from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same
point, to provide a neutral pressure reading. This point of connection should be in the system
return, on the suction side of the circulation pump.
Connections to the return header of the system must be made in the horizontal plane, to prevent
system borne debris entering the equipment. Where 2 connections are required to the system
return header, they must join the header at 2 distinctly separate points at least 500 mm apart
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 11 / 48
Installation
This equipment is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a
risk of flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed /
sited where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of
the pressurisation unit. The conditions at the point of connection to the system must not exceed
these values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before
connection to the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape.
If PTFE tape is used, care must be taken to ensure that the tape does not obstruct the orifice of
the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure
sensor from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same
point, to provide a neutral pressure reading. This point of connection should be in the system
return, on the suction side of the circulation pump.
Connections to the return header of the system must be made in the horizontal plane, to prevent
system borne debris entering the equipment. Where 2 connections are required to the system
return header, they must join the header at 2 distinctly separate points at least 500 mm apart
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 11 / 48
Installation
This equipment is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a
risk of flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed /
sited where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of
the pressurisation unit. The conditions at the point of connection to the system must not exceed
these values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before
connection to the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape.
If PTFE tape is used, care must be taken to ensure that the tape does not obstruct the orifice of
the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure
sensor from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same
point, to provide a neutral pressure reading. This point of connection should be in the system
return, on the suction side of the circulation pump.
Connections to the return header of the system must be made in the horizontal plane, to prevent
system borne debris entering the equipment. Where 2 connections are required to the system
return header, they must join the header at 2 distinctly separate points at least 500 mm apart
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 11 / 48
Installation
This equipment is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a
risk of flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed /
sited where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of
the pressurisation unit. The conditions at the point of connection to the system must not exceed
these values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before
connection to the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape.
If PTFE tape is used, care must be taken to ensure that the tape does not obstruct the orifice of
the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure
sensor from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same
point, to provide a neutral pressure reading. This point of connection should be in the system
return, on the suction side of the circulation pump.
Connections to the return header of the system must be made in the horizontal plane, to prevent
system borne debris entering the equipment. Where 2 connections are required to the system
return header, they must join the header at 2 distinctly separate points at least 500 mm apart
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 11 / 48
Installation
This equipment is not designed to be installed in an outdoor environment. The unit must be
installed in a frost-free environment, away from precipitation and water sprays/jets. If there is a
risk of flooding, the unit must be installed on a raised plinth.
The unit is equipped with a Category 5 Weir overflow arrangement and must not be installed /
sited where damage to the local environs can occur on water egress
Please refer to the appropriate datasheet for the maximum working pressure and temperature of
the pressurisation unit. The conditions at the point of connection to the system must not exceed
these values.
Pipe Connections
To avoid damaging the float valve, the mains water supply pipe must be flushed before
connection to the pressurisation unit.
All pipe connections must be made with appropriate jointing compound/PTFE tape.
If PTFE tape is used, care must be taken to ensure that the tape does not obstruct the orifice of
the fitting.
Non-return valves, pressure reducing valves and RPZ valves must not be installed between the
pressurisation unit and the heating/cooling system. These devices will prevent the pressure
sensor from reading the system pressure.
The pressurisation unit and expansion vessel should be connected to the system at the same
point, to provide a neutral pressure reading. This point of connection should be in the system
return, on the suction side of the circulation pump.
Connections to the return header of the system must be made in the horizontal plane, to prevent
system borne debris entering the equipment. Where 2 connections are required to the system
return header, they must join the header at 2 distinctly separate points at least 500 mm apart

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
8
Typical Installation Diagram
Standard equipment arrangement (example of Floor standing unit) follow same principle for wall mounted unit
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 10 / 40

Standard equipment arrangement (example of Floor standing unit) follow same principle for wall mounted unit











installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
9
Clearance and Connection Requirements
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 11 / 40

Connection
Size
Notes
Mains Water
Feed
½” BSP M
An isolation valve must be installed on the mains water feed for servicing.
Break Tank
Overflow
22mm
Guidance on drainage requirements should be obtained from the local water
authority.
System
Connection
½” BSP M
/ 15mm
The pressurisation unit and expansion vessel should be connected to the
system at the same point.
The point of connection should be in the system return, on the suction side of
the circulation pump.
Non-return valves, pressure reducing valves and RPZ valves must not be used.
ProDoseVDG2HP

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
10
Electrical Power Supply
`This equipment must be electrically isolated before removing the covers. Cables connected to the volt
free contacts may be supplied from another source and may remain live after the unit is isolated. These
must be isolated elsewhere.
All electrical connections must be carried out by a suitably qualified and competent person.
The mains power supply to the pressurisation unit must be connected into the fused terminal block as shown below:
It is recommended to supply power to the pressurisation unit via a lockable isolator. This should be
installed within 2m of the equipment.
This equipment can be damaged by the high voltages produced by electrical installation testing
equipment. When performing electrical installation tests, the equipment must be isolated from the
supply.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 14 / 48
Electrical Power Supply
This equipment must be electrically isolated before removing the covers. Cables connected to the
volt free contacts may be supplied from another source and may remain live after the unit is
isolated. These must be isolated elsewhere.
All electrical connections must be carried out by a suitably qualified and competent person.
The mains power supply to the pressurisation unit must be connected as shown below:
It is recommended to supply power to the pressurisation unit via a lockable isolator. This should
be installed within 2m of the equipment.
This equipment can be damaged by the high voltages produced by electrical installation testing
equipment. When performing electrical installation tests, the equipment must be isolated from
the supply.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 14 / 48
Electrical Power Supply
This equipment must be electrically isolated before removing the covers. Cables connected to the
volt free contacts may be supplied from another source and may remain live after the unit is
isolated. These must be isolated elsewhere.
All electrical connections must be carried out by a suitably qualified and competent person.
The mains power supply to the pressurisation unit must be connected as shown below:
It is recommended to supply power to the pressurisation unit via a lockable isolator. This should
be installed within 2m of the equipment.
This equipment can be damaged by the high voltages produced by electrical installation testing
equipment. When performing electrical installation tests, the equipment must be isolated from
the supply.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 14 / 48
Electrical Power Supply
This equipment must be electrically isolated before removing the covers. Cables connected to the
volt free contacts may be supplied from another source and may remain live after the unit is
isolated. These must be isolated elsewhere.
All electrical connections must be carried out by a suitably qualified and competent person.
The mains power supply to the pressurisation unit must be connected as shown below:
It is recommended to supply power to the pressurisation unit via a lockable isolator. This should
be installed within 2m of the equipment.
This equipment can be damaged by the high voltages produced by electrical installation testing
equipment. When performing electrical installation tests, the equipment must be isolated from
the supply.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 14 / 48
Electrical Power Supply
This equipment must be electrically isolated before removing the covers. Cables connected to the
volt free contacts may be supplied from another source and may remain live after the unit is
isolated. These must be isolated elsewhere.
All electrical connections must be carried out by a suitably qualified and competent person.
The mains power supply to the pressurisation unit must be connected as shown below:
It is recommended to supply power to the pressurisation unit via a lockable isolator. This should
be installed within 2m of the equipment.
This equipment can be damaged by the high voltages produced by electrical installation testing
equipment. When performing electrical installation tests, the equipment must be isolated from
the supply.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 12 / 40

This equipment must be electrically isolated before removing the covers. Cables connected to the
volt free contacts may be supplied from another source and may remain live after the unit is
isolated. These must be isolated elsewhere.
All electrical connections must be carried out by a suitably qualified and competent person.
The mains power supply to the pressurisation unit must be connected into the fused terminal block as shown
below:
It is recommended to supply power to the pressurisation unit via a lockable isolator. This should
be installed within 2m of the equipment.
This equipment can be damaged by the high voltages produced by electrical installation testing
equipment. When performing electrical installation tests, the equipment must be isolated from
the supply.

mains power supply cable

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
11
Micro Controller
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.
With the exception of the Common Alarm, it is possible to convert all other fault contacts to normally
closed. For further information please refer to the commissioning section of this manual.
The other volt free contacts can be connected to the BMS and when the alarm is triggered this is
shown on the Pressurisation unit and the BMS.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 13 / 40

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.
With the exception of the Common Alarm, it is possible to convert all other fault contacts to
normally closed. For further information please refer to the commissioning section of this manual.
The other volt free contacts can be connected to the BMS and when the alarm is triggered this is
shown on the Pressurisation unit and the BMS.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 15 / 48
Micro Controller
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.
With the exception of the Common Alarm, it is possible to convert all other fault contacts to
normally closed. For further information please refer to the commissioning section of this manual.
The other volt free contacts can be connected to the BMS and when the alarm is triggered this is
shown on the Pressurisation unit and the BMS.

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
12
Commissioning
It is highly recommended to have this equipment commissioned by a Flamco approved engineer. Any
damage or loss incurred through incorrect commissioning by an unapproved engineer will not be covered
by the warranty.
Pre-Commissioning Checklist
The following conditions must be met before starting the commissioning process. Failure to meet these
conditions may result in injury or damage to the equipment, system and property.
Equipment is sited in a frost free area, away from precipitation and water sprays/jets
All necessary pipe/electrical connections have been made to a satisfactory standard
The temperature and pressure at the point of connection are within the operating limits of the pressurisation unit.
The heating/cooling system is fitted with a safety valve and expansion vessel
The following conditions must be met for the pressurisation unit and heating/cooling system to function
correctly. If these conditions have not been met, it is not advisable to proceed with the commissioning
process.
The system connection has been made into the system return header / pump suction
There are no non-return valves, pressure reducing valves or RPZ valves installed between the pressurisation unit
and the heating/cooling system
The expansion vessel is pre-charged to the correct pressure (equal to PU cold fill pressure)
It is advisable to fill the heating/cooling system prior to commissioning. If this is not possible, the
pressurisation unit can be used to fill the system after commissioning (Not possible with Mini Units).
Depending on the size of the system, this may take a considerable amount of time.
The heating/cooling system is filled and pressurised to the required cold fill pressure, with the water at ambient
temperature (approximately).
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 16 / 48
Commissioning
It is highly recommended to have this equipment commissioned by a Flamco approved engineer.
Any damage or loss incurred through incorrect commissioning by an unapproved engineer will not
be covered by the warranty.
Pre-Commissioning Checklist
The following conditions must be met before starting the commissioning process. Failure to meet
these conditions may result in injury or damage to the equipment, system and property.
Equipment is sited in a frost-free area, away from precipitation and water sprays/jets
All necessary pipe/electrical connections have been made to a satisfactory standard
The temperature and pressure at the point of connection are within the operating limits of the
pressurisation unit.
The heating/cooling system is fitted with a safety valve and expansion vessel
The following conditions must be met for the pressurisation unit and heating/cooling system to
function correctly. If these conditions have not been met, it is not advisable to proceed with the
commissioning process.
The system connection has been made into the system return header / pump suction
There are no non-return valves, pressure reducing valves or RPZ valves installed between the
pressurisation unit and the heating/cooling system
The expansion vessel is pre-charged to the correct pressure (equal to PU cold fill pressure)
It is advisable to fill the heating/cooling system prior to commissioning. If this is not possible, the
pressurisation unit can be used to fill the system after commissioning (Not possible with Mini
Units). Depending on the size of the system, this may take a considerable amount of time.
The heating/cooling system is filled and pressurised to the required cold fill pressure, with the water at
ambient temperature (approximately).
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 16 / 48
Commissioning
It is highly recommended to have this equipment commissioned by a Flamco approved engineer.
Any damage or loss incurred through incorrect commissioning by an unapproved engineer will not
be covered by the warranty.
Pre-Commissioning Checklist
The following conditions must be met before starting the commissioning process. Failure to meet
these conditions may result in injury or damage to the equipment, system and property.
Equipment is sited in a frost-free area, away from precipitation and water sprays/jets
All necessary pipe/electrical connections have been made to a satisfactory standard
The temperature and pressure at the point of connection are within the operating limits of the
pressurisation unit.
The heating/cooling system is fitted with a safety valve and expansion vessel
The following conditions must be met for the pressurisation unit and heating/cooling system to
function correctly. If these conditions have not been met, it is not advisable to proceed with the
commissioning process.
The system connection has been made into the system return header / pump suction
There are no non-return valves, pressure reducing valves or RPZ valves installed between the
pressurisation unit and the heating/cooling system
The expansion vessel is pre-charged to the correct pressure (equal to PU cold fill pressure)
It is advisable to fill the heating/cooling system prior to commissioning. If this is not possible, the
pressurisation unit can be used to fill the system after commissioning (Not possible with Mini
Units). Depending on the size of the system, this may take a considerable amount of time.
The heating/cooling system is filled and pressurised to the required cold fill pressure, with the water at
ambient temperature (approximately).
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 16 / 48
Commissioning
It is highly recommended to have this equipment commissioned by a Flamco approved engineer.
Any damage or loss incurred through incorrect commissioning by an unapproved engineer will not
be covered by the warranty.
Pre-Commissioning Checklist
The following conditions must be met before starting the commissioning process. Failure to meet
these conditions may result in injury or damage to the equipment, system and property.
Equipment is sited in a frost-free area, away from precipitation and water sprays/jets
All necessary pipe/electrical connections have been made to a satisfactory standard
The temperature and pressure at the point of connection are within the operating limits of the
pressurisation unit.
The heating/cooling system is fitted with a safety valve and expansion vessel
The following conditions must be met for the pressurisation unit and heating/cooling system to
function correctly. If these conditions have not been met, it is not advisable to proceed with the
commissioning process.
The system connection has been made into the system return header / pump suction
There are no non-return valves, pressure reducing valves or RPZ valves installed between the
pressurisation unit and the heating/cooling system
The expansion vessel is pre-charged to the correct pressure (equal to PU cold fill pressure)
It is advisable to fill the heating/cooling system prior to commissioning. If this is not possible, the
pressurisation unit can be used to fill the system after commissioning (Not possible with Mini
Units). Depending on the size of the system, this may take a considerable amount of time.
The heating/cooling system is filled and pressurised to the required cold fill pressure, with the water at
ambient temperature (approximately).
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 16 / 48
Commissioning
It is highly recommended to have this equipment commissioned by a Flamco approved engineer.
Any damage or loss incurred through incorrect commissioning by an unapproved engineer will not
be covered by the warranty.
Pre-Commissioning Checklist
The following conditions must be met before starting the commissioning process. Failure to meet
these conditions may result in injury or damage to the equipment, system and property.
Equipment is sited in a frost-free area, away from precipitation and water sprays/jets
All necessary pipe/electrical connections have been made to a satisfactory standard
The temperature and pressure at the point of connection are within the operating limits of the
pressurisation unit.
The heating/cooling system is fitted with a safety valve and expansion vessel
The following conditions must be met for the pressurisation unit and heating/cooling system to
function correctly. If these conditions have not been met, it is not advisable to proceed with the
commissioning process.
The system connection has been made into the system return header / pump suction
There are no non-return valves, pressure reducing valves or RPZ valves installed between the
pressurisation unit and the heating/cooling system
The expansion vessel is pre-charged to the correct pressure (equal to PU cold fill pressure)
It is advisable to fill the heating/cooling system prior to commissioning. If this is not possible, the
pressurisation unit can be used to fill the system after commissioning (Not possible with Mini
Units). Depending on the size of the system, this may take a considerable amount of time.
The heating/cooling system is filled and pressurised to the required cold fill pressure, with the water at
ambient temperature (approximately).

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
13
Controller Overview
The following image shows the front of the pressurisation unit digital controller. 4 buttons are provided for
programming, and an LED display which shows scrolling messages.
When the controller is first powered up, it will display the controller version number. This manual
relates to controller version >8.0. If the controller is of a dierent version, there may be dierences in
the menu items available.
When in normal operation, the controller will display the current system pressure. If a fault occurs, the controller will
display a fault code and produce an audible alarm.
In normal operation, the functions of the buttons are as follows:
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 15 / 40

The following image shows the front of the pressurisation unit digital controller. 4 buttons are provided for
programming, and an LED display which shows scrolling messages.
When the controller is first powered up, it will display the controller version number. This manual
relates to controller version >8.0. If the controller is of a different version, there may be
differences in the menu items available.
When in normal operation, the controller will display the current system pressure. If a fault occurs, the
controller will display a fault code and produce an audible alarm.
In normal operation, the functions of the buttons are as follows:
Button
Function
Press
Hold
SET
-
Show Current System Pressure
MUTE
Mute Audible Alarm
Reset Unit
+
-
Enter Programming Menu
-
-
Enter Programming Menu
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 15 / 40

The following image shows the front of the pressurisation unit digital controller. 4 buttons are provided for
programming, and an LED display which shows scrolling messages.
When the controller is first powered up, it will display the controller version number. This manual
relates to controller version >8.0. If the controller is of a different version, there may be
differences in the menu items available.
When in normal operation, the controller will display the current system pressure. If a fault occurs, the
controller will display a fault code and produce an audible alarm.
In normal operation, the functions of the buttons are as follows:
Button
Function
Press
Hold
SET
-
Show Current System Pressure
MUTE
Mute Audible Alarm
Reset Unit
+
-
Enter Programming Menu
-
-
Enter Programming Menu
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 16 / 48
Commissioning
It is highly recommended to have this equipment commissioned by a Flamco approved engineer.
Any damage or loss incurred through incorrect commissioning by an unapproved engineer will not
be covered by the warranty.
Pre-Commissioning Checklist
The following conditions must be met before starting the commissioning process. Failure to meet
these conditions may result in injury or damage to the equipment, system and property.
Equipment is sited in a frost-free area, away from precipitation and water sprays/jets
All necessary pipe/electrical connections have been made to a satisfactory standard
The temperature and pressure at the point of connection are within the operating limits of the
pressurisation unit.
The heating/cooling system is fitted with a safety valve and expansion vessel
The following conditions must be met for the pressurisation unit and heating/cooling system to
function correctly. If these conditions have not been met, it is not advisable to proceed with the
commissioning process.
The system connection has been made into the system return header / pump suction
There are no non-return valves, pressure reducing valves or RPZ valves installed between the
pressurisation unit and the heating/cooling system
The expansion vessel is pre-charged to the correct pressure (equal to PU cold fill pressure)
It is advisable to fill the heating/cooling system prior to commissioning. If this is not possible, the
pressurisation unit can be used to fill the system after commissioning (Not possible with Mini
Units). Depending on the size of the system, this may take a considerable amount of time.
The heating/cooling system is filled and pressurised to the required cold fill pressure, with the water at
ambient temperature (approximately).

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
14
Controller Programming
Do not alter any settings without first understanding the implications of doing so. Incorrect settings
may cause damage to the equipment, wider system or property.
To enter the programming menu, hold the (+) button until “enter code” appears on the screen, followed by “9999”
with a flashing cursor after the first digit.
To gain access to the programming menu, the following code must be entered:
Standard Code Standard set of options 2601
To enter the code, change the first digit with the (+) and (-) buttons, then press (SET) to move onto the next digit.
Repeat for all digits, then once the correct code is shown on the display, press (SET) to enter the programming
menu.
Once a correct code has been entered, the first option PR00 – Language will appear select E and then press and hold
(SET) & (+) to move to next menu.
Once in the menu, the value of the current menu item can be changed using the (+) and (-) buttons. Once the
current value has been set, pressing the (SET) & (+) buttons together to move to the next option or (SET) & (-)
buttons together to move back an option is you made an error.
Once the programming is complete press and hold the (SET) button for few seconds to save the settings.
If the controller loses power while in the programming menu, all changes made up to that point will
be erased. To confirm all changes, the end of the menu must be reached, and press and hold the (SET)
button for few seconds to save the settings
Key:
(SET) & (+) = Move to next menu
(SET) & (-) = Move back to pervious next menu
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 18 / 48
Controller Programming
Do not alter any settings without first understanding the implications of doing so. Incorrect
settings may cause damage to the equipment, wider system or property.
To enter the programming menu, hold the (+) button until “enter code” appears on the screen, followed by
“9999” with a flashing cursor after the first digit.
To gain access to the programming menu, one of the following codes must be entered:
Standard Code
Standard set of options
2601
Engineer Code
Full set of options
4706
To enter the code, change the first digit with the (+) and (-) buttons, then press (SET) to move onto the next
digit. Repeat for all digits, then once the correct code is shown on the display, press (SET) to enter the
programming menu.
Once a correct code has been entered, the first option PR00 –Language will appear select E and then press and
hold (SET) & (+) to move to next menu.
Once in the menu, the value of the current menu item can be changed using the (+) and (-) buttons. Once the
current value has been set, pressing the (SET) & (+) buttons together to move to the next option or (SET) & (-)
buttons together to move back an option is you made an error.
Once the programming is complete press and hold the (SET) button for few seconds to save the settings.
If the controller loses power while in the programming menu, all changes made up to that point
will be erased. To confirm all changes, the end of the menu must be reached, and press and hold
the (SET) button for few seconds to save the settings
Key:
(SET) & (+) = Move to next menu
(SET) & (-) = Move back to pervious next menu
Hold down (SET) = Hold (SET) button down for few seconds saves the menu
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 18 / 48
Controller Programming
Do not alter any settings without first understanding the implications of doing so. Incorrect
settings may cause damage to the equipment, wider system or property.
To enter the programming menu, hold the (+) button until “enter code” appears on the screen, followed by
“9999” with a flashing cursor after the first digit.
To gain access to the programming menu, one of the following codes must be entered:
Standard Code
Standard set of options
2601
Engineer Code
Full set of options
4706
To enter the code, change the first digit with the (+) and (-) buttons, then press (SET) to move onto the next
digit. Repeat for all digits, then once the correct code is shown on the display, press (SET) to enter the
programming menu.
Once a correct code has been entered, the first option PR00 –Language will appear select E and then press and
hold (SET) & (+) to move to next menu.
Once in the menu, the value of the current menu item can be changed using the (+) and (-) buttons. Once the
current value has been set, pressing the (SET) & (+) buttons together to move to the next option or (SET) & (-)
buttons together to move back an option is you made an error.
Once the programming is complete press and hold the (SET) button for few seconds to save the settings.
If the controller loses power while in the programming menu, all changes made up to that point
will be erased. To confirm all changes, the end of the menu must be reached, and press and hold
the (SET) button for few seconds to save the settings
Key:
(SET) & (+) = Move to next menu
(SET) & (-) = Move back to pervious next menu
Hold down (SET) = Hold (SET) button down for few seconds saves the menu

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
15
Customer Parameter List
The table below gives details of all menu items, in the order that they will appear:
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 17 / 40

The table below gives details of all menu items, in the order that they will appear:
PR No
Customer Code - 2601
Notes
Default
Unit
0 Language
E=English I=Italian D=Deutsch F=French
N=Netherland
E
2
Low Pressure Alarm
0.5 bar less than Fill Pressure
0.5
Bar
STANDARD OPTION
3
Low Pressure Warning
0.6 Bar less than Fill Pressure
0.6
Bar
4
Differential
‘cut-in’ and ‘cut-out’ between pumps
0.2
Bar
5 Fill Pressure
System pressure + 0.3 venting
allowance
1
Bar
6
High Pressure Warning
High pressure alarm –0.1 Bar
2.6
Bar
7
High Pressure Alarm
System safety valve - 10%
2.7
Bar
8
Flood Limit
10
minutes
9
Excessive Start Quantity
0
10
Excessive Start Time
8
hours
28
Fill system
N
45
Service Reminder Y/N
N
48
ID Number
MODBUS ID number
1
49
Review Logs
N
50 (*)
Counter for P1 used for Topup
51 (*)
Hours Run for P1 Topup
52 (*)
Counter for P2 used for Topup
53 (*)
Hours Run for P2 Topup
54 (*)
Total Hours run P1 (inc Degassing)
55 (*)
Total Hours run P2 (inc Degassing)
56 (*)
Alarm Counter
57 (*)
Power interrupted counter
(*)
IF REVIEW LOG IS YES THEM PR NUMBER 50 - 57 WILL BE ACTIVE
This menu only brings up standard option for the pressurisation equipment, to set up the degasser option of the
equipment then you need to put in 4706 code and follow the menu list on the next pages.

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
16
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 20 / 40

ͳǤ
Ensure that the break tank float valve is set to its lowest position:
Flexfiller Units
If a drain valve is fitted to the break tank, ensure that it is closed. Then, turn on the mains water supply and
allow the break tank to fill.
When the float valve operates for the first time, it may not close immediately, causing the break
tank to overfill. Once the internals of the valve have been fully wetted this should not occur again.
ʹǤ
This step is only necessary for Flexfiller, Midi and IP66 Midi units. For Mini units, move on to the next step.
Make sure that the internal isolation valve within the pressurisation unit is closed. Failure to do
this may cause injury or damage to the equipment, system or property.
Hydraulic Commissioning
1. Float valve setting
Ensure that the break tank float valve is set to its lowest position:
If a drain valve is fitted to the break tank, ensure that it is closed. Then, turn on the mains water supply and allow the
break tank to fill.
When the float valve operates for the first time, it may not close immediately, causing the break tank
to overfill. Once the internals of the valve have been fully wetted this should not occur again.
2. Bleeding Pumps
This step is only necessary for 3760 ProDoseVDG 2HP unit.
Make sure that the internal isolation valve within the pressurisation unit is closed. Failure to do this
may cause injury or damage to the equipment, system or property.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 23 / 48
Hydraulic Commissioning
1. Float valve setting
Ensure that the break tank float valve is set to its lowest position:
If a drain valve is fitted to the break tank, ensure that it is closed. Then, turn on the mains water supply and
allow the break tank to fill.
When the float valve operates for the first time, it may not close immediately, causing the break
tank to overfill. Once the internals of the valve have been fully wetted this should not occur again.
2. Bleeding Pumps 
Make sure that the internal isolation valve (combined equipment only) within the pressurisation
unit is closed by following the steps below. Failure to do this may cause injury or damage to the
equipment, system or property.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 23 / 48
Hydraulic Commissioning
1. Float valve setting
Ensure that the break tank float valve is set to its lowest position:
If a drain valve is fitted to the break tank, ensure that it is closed. Then, turn on the mains water supply and
allow the break tank to fill.
When the float valve operates for the first time, it may not close immediately, causing the break
tank to overfill. Once the internals of the valve have been fully wetted this should not occur again.
2. Bleeding Pumps 
Make sure that the internal isolation valve (combined equipment only) within the pressurisation
unit is closed by following the steps below. Failure to do this may cause injury or damage to the
equipment, system or property.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 20 / 40

ͳǤ
Ensure that the break tank float valve is set to its lowest position:
Flexfiller Units
If a drain valve is fitted to the break tank, ensure that it is closed. Then, turn on the mains water supply and
allow the break tank to fill.
When the float valve operates for the first time, it may not close immediately, causing the break
tank to overfill. Once the internals of the valve have been fully wetted this should not occur again.
ʹǤ
This step is only necessary for Flexfiller, Midi and IP66 Midi units. For Mini units, move on to the next step.
Make sure that the internal isolation valve within the pressurisation unit is closed. Failure to do
this may cause injury or damage to the equipment, system or property.
3760 ProDoseVDG 2HPUnits

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
17
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 21 / 40
Locate the bleed screw on the pump. The following diagrams show examples of typical bleed screw locations for
most pumps:
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may damage the pump casing.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 21 / 40
Locate the bleed screw on the pump. The following diagrams show examples of typical bleed screw locations for
most pumps:
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may damage the pump casing.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 24 / 48
Attach a length of hose to the drain and open the valve to the system. Remember to close valve once this is
completed
Locate the bleed screw on the pump. The following diagrams show examples of typical bleed screw locations for
most pumps:
Do not use excessive force when tightening the bleed screw as this may damage the pump casing.
Locate the bleed screw on the pump. The following diagrams show examples of typical bleed screw locations for
most pumps:
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or attempt
to use any tools to turn it as this may damage the pump casing.

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
18
3. Forcing Pumps to Run
Turn on the power supply to the digital controller and wait for the system pressure to appear on the
display. Then, enter the code 2601 and go to the first setting in the menu, cold fill. While at this point
in the menu, holding down the (MUTE) button will force pump 1 to run, and holding down the (SET)
button will force pump 2 to run.
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed screw
can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail
4. Initial Start-up
Once the isolation valve is open, the pressure sensor will be able to read the system pressure.
Turn on the power supply to the pressurisation unit. Depending on the current system pressure, the unit will respond
in one of the following ways:
If the system pressure is below the low-pressure alarm setting, the controller will display a “LOW
PRESSURE” fault and the pumps will not run. To clear this fault, either increase the system pressure
using a filling loop, or enable the system fill option on the pressurisation unit.
If the system pressure is above the high-pressure alarm setting, the controller will display a “HIGH
PRESSURE” fault. To clear this fault, use a suitable drain point to remove water from the system until
the system pressure equals the cold fill pressure.
If the system pressure is above the low-pressure alarm setting, but below the cold fill setting (by an
amount equal to the dierential setting), the pumps will start. Once the system pressure has reached
the cold fill pressure, the pump will stop.
Once the required system pressure has been reached, the controller will display the current system pressure. The
unit is now in normal operation.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 25 / 48
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may irreparably damage the pump casing.
͵Ǥ
Turn on the power supply to the digital controller and wait for the system pressure to appear on
the display. Then, enter the code 2601, Language menu will appear as default [E]. Press and hold
(MUTE) & (+) for pump 1 to run and Press and hold (MUTE) & (-) for pump 2 to run
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed
screw can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 25 / 48
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may irreparably damage the pump casing.
͵Ǥ
Turn on the power supply to the digital controller and wait for the system pressure to appear on
the display. Then, enter the code 2601, Language menu will appear as default [E]. Press and hold
(MUTE) & (+) for pump 1 to run and Press and hold (MUTE) & (-) for pump 2 to run
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed
screw can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 25 / 48
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may irreparably damage the pump casing.
͵Ǥ
Turn on the power supply to the digital controller and wait for the system pressure to appear on
the display. Then, enter the code 2601, Language menu will appear as default [E]. Press and hold
(MUTE) & (+) for pump 1 to run and Press and hold (MUTE) & (-) for pump 2 to run
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed
screw can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 25 / 48
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may irreparably damage the pump casing.
͵Ǥ
Turn on the power supply to the digital controller and wait for the system pressure to appear on
the display. Then, enter the code 2601, Language menu will appear as default [E]. Press and hold
(MUTE) & (+) for pump 1 to run and Press and hold (MUTE) & (-) for pump 2 to run
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed
screw can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 25 / 48
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may irreparably damage the pump casing.
͵Ǥ
Turn on the power supply to the digital controller and wait for the system pressure to appear on
the display. Then, enter the code 2601, Language menu will appear as default [E]. Press and hold
(MUTE) & (+) for pump 1 to run and Press and hold (MUTE) & (-) for pump 2 to run
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed
screw can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 25 / 48
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may irreparably damage the pump casing.
͵Ǥ
Turn on the power supply to the digital controller and wait for the system pressure to appear on
the display. Then, enter the code 2601, Language menu will appear as default [E]. Press and hold
(MUTE) & (+) for pump 1 to run and Press and hold (MUTE) & (-) for pump 2 to run
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed
screw can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 25 / 48
If the pump has a plastic bleed screw like the one shown below, do not use excessive force or
attempt to use any tools to turn it as this may irreparably damage the pump casing.
͵Ǥ
Turn on the power supply to the digital controller and wait for the system pressure to appear on
the display. Then, enter the code 2601, Language menu will appear as default [E]. Press and hold
(MUTE) & (+) for pump 1 to run and Press and hold (MUTE) & (-) for pump 2 to run
To bleed the pumps, the pumps must be started. Then while the pump is running, the bleed screw
must be opened until all the air has been removed and only water is being discharged. The bleed
screw can then be closed.
Failure to bleed the pumps may result in damage to the equipment, system and property.
After bleeding the pumps, close the drain valve and remove the hose from the hose tail.

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
19
5. Testing
To test the operation of the pressurisation unit while connected to the system, the system pressure must be lowered
slowly to simulate a minor leak.
This can be achieved by using a drain point on the system, the drain points on the pressurisation unit, or by manually
opening the safety relief valve.
Care must be taken not to let the pressure drop too quickly. If the system pressure falls below the low
pressure set point, a low-pressure fault will be displayed and the pumps will not run. The pressurisation
unit is not designed to cope with a sudden loss of system pressure, which would be symptomatic of a
catastrophic failure such as a burst pipe.
Once the system pressure has fallen below the cold fill setting (by an amount equal to the dierential setting), the
pump should start refilling the system. The pump will continue to run until the cold fill pressure has been reached.
This test demonstrates the primary function of the pressurisation unit. This test may be repeated at any time to
confirm the operation of the pressurisation unit.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 27 / 48
5. Testing
To test the operation of the pressurisation unit while connected to the system, the system pressure must be
lowered slowly to simulate a minor leak.
This can be achieved by using a drain point on the system, the drain point on the pressurisation unit, or by
manually opening the safety relief valve.
Care must be taken not to let the pressure drop too quickly. If the system pressure falls below the
low pressure set point, a low pressure fault will be displayed and the pumps will not run. The
pressurisation unit is not designed to cope with a sudden loss of system pressure, which would be
symptomatic of a catastrophic failure such as a burst pipe.
Once the system pressure has fallen below the cold fill setting (by an amount equal to the differential setting),
the pump should start refilling the system. The pump will continue to run until the cold fill pressure has been
reached.
This test demonstrates the primary function of the pressurisation unit. This test may be repeated at any time to
confirm the operation of the pressurisation unit.
Quick equipment suitability guide in relation to system expansion vessel
Type of unit
Vessel size (Litres)
Pro PDD
4 x 1000
All Flamco vessels are set to a nominal pre-charge at the Factory for testing. In order for the vessel to work
properly with the pressurisation unit, and wider system, the gas charge needs to be set to the desired cold fill
pressure prior to installation. Remember to check vessel pressure before commissioning the pressurisation unit.
Vessel Type
Size Range
Standard Pre-
charge (Bar)
Flexcon 6 bar
2 - 25
0.5
35 - 1000
1.5
Flexcon 10 bar
110 - 1000
1.5
Airfix P 10 Bar
2 - 1000
2.7
Airfix DE 10 Bar
100 - 3000
6
Airfix DE 16 Bar
50 - 3000
6
Airfix DEB 10 Bar
1600 - 3000
6
Airfix DEB 16 Bar
50 - 3000
6

installation &
operating instructions
3760 Digital Pressurisation Equipment
ProDoseVDG 2HP
20
Operation
Once commissioned, the pressurisation unit should operate without any user intervention.
Under normal operating conditions, the display will show the current system pressure in Bar.
While the unit is filling, the display will show <PUMP 1 RUN> or <PUMP 2 RUN> depending on which pump is
currently running.
If the unit identifies a fault, the display will show the relevant fault code.
If the pressurisation unit is showing a fault code on the display, holding down the [SET] button will
cause the current system pressure to be temporarily shown on the display.
For practical guidance on diagnosing and rectifying faults, please refer to the Troubleshooting section
of this manual.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Errors and omissions excepted.
Rev 2.1 31/01/20 Page 24 / 40

Once commissioned, the pressurisation unit should operate without any user intervention.
Under normal operating conditions, the display will show the current system pressure in Bar.
While the unit is filling, the display will show <PUMP 1 RUN> or <PUMP 2 RUN> depending on which pump is
currently running.
If the unit identifies a fault, the display will show the relevant fault code.
If the pressurisation unit is showing a fault code on the display, holding down the [SET] button
will cause the current system pressure to be temporarily shown on the display.

The following table gives the meanings of all fault codes used on the digital controller:
Fault Code Description
Auto/Manual
Reset
LOW PRESSURE
The system pressure is below the [LOW PRESSURE] set
point.
User Defined
HIGH PRESSURE
The system pressure is above the [HIGH PRESSURE] set
point.
User Defined
LOW H20
The break-tank low level float switch has been activated
Auto Reset
HIGH H20
The break-tank high level float switch has been activated
Auto Reset
P1 FAIL
The controller has detected a fault (incorrect current draw)
on the respective pump
Manual Reset
P2 FAIL
P1 FLOOD LIMIT
The respective pump has run for longer than the [FLOOD
LIMIT] period
Manual Reset
P2 FLOOD LIMIT
ERR. 1
The signal from the pressure sensor is out of range
Manual Reset
EXCESSIVE DEMAND
There have been 4 pump starts within an 8 hour period
Manual Reset
SERVICE
The pressurisation unit is due an annual service
Manual Reset
For practical guidance on diagnosing and rectifying faults, please refer to the Troubleshooting
section of this manual.
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 28 / 48
Operation
Once commissioned, the pressurisation unit should operate without any user intervention.
Under normal operating conditions, the display will show the current system pressure in Bar.
While the unit is filling, the display will show <PUMP 1 RUN> or <PUMP 2 RUN> depending on which pump is
currently running.
If the unit identifies a fault, the display will show the relevant fault code.
If the pressurisation unit is showing a fault code on the display, holding down the [SET] button
will cause the current system pressure to be temporarily shown on the display.
Fault Codes
The following table gives the meanings of all fault codes used on the digital controller:
Fault code
Description
Auto/Manual Reset
Low H2O
The break-tank low level float switch has been activated
Auto Reset
High H2O
The break-tank high level float switch has been activated
Auto Reset
Hw Communication Error
Communication between controller and expansion board
not registering
Manual Reset
Pressure Sensor Fail
System pressure not registering and may have failed
Manual Reset
Degas Sensor Fail
Pressure within the cylinder not registering and may have
failed
Manual Reset
Excessive Demand
There have been 4 pump starts within an 8 hour period
Manual Reset
Flood Limit
The respective pump has run for longer than the [FLOOD
LIMIT] period
Manual Reset
Pump Timeout
Excessive high demand of water been pumped
Manual Reset
High Pressure Alarm
The system pressure is above the [HIGH PRESSURE] set
point.
Auto Reset
Low Pressure Alarm
The system pressure is below the [LOW PRESSURE] set
point.
Auto Reset
Pump1 Failure
The controller has detected a fault (incorrect current
draw) on the respective pump
Manual Reset
Pump2 Failure
All Pumps Failure
All pumps not making up pressure on system
Replace pump
Insufficient Vacuum
The low water switch has been activated, either a leak
has occurred or the air non- return valve has failed or is
missing.
Manual Reset
Degassing Pump Failure
Pump not reaching the require pressure within degassing
mode
Manual Reset
Vac Cylinder high Pressure
Cylinder pressure alarm reached
Manual Reset
Stabilization Timeout
Either the pumps have run for too long or the pressure
has not reached the required start pressure for the pump
within the time limit.
Manual Reset
© 2018 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 1.0 Aug-18 Page 28 / 48
Operation
Once commissioned, the pressurisation unit should operate without any user intervention.
Under normal operating conditions, the display will show the current system pressure in Bar.
While the unit is filling, the display will show <PUMP 1 RUN> or <PUMP 2 RUN> depending on which pump is
currently running.
If the unit identifies a fault, the display will show the relevant fault code.
If the pressurisation unit is showing a fault code on the display, holding down the [SET] button
will cause the current system pressure to be temporarily shown on the display.
Fault Codes
The following table gives the meanings of all fault codes used on the digital controller:
Fault code
Description
Auto/Manual Reset
Low H2O
The break-tank low level float switch has been activated
Auto Reset
High H2O
The break-tank high level float switch has been activated
Auto Reset
Hw Communication Error
Communication between controller and expansion board
not registering
Manual Reset
Pressure Sensor Fail
System pressure not registering and may have failed
Manual Reset
Degas Sensor Fail
Pressure within the cylinder not registering and may have
failed
Manual Reset
Excessive Demand
There have been 4 pump starts within an 8 hour period
Manual Reset
Flood Limit
The respective pump has run for longer than the [FLOOD
LIMIT] period
Manual Reset
Pump Timeout
Excessive high demand of water been pumped
Manual Reset
High Pressure Alarm
The system pressure is above the [HIGH PRESSURE] set
point.
Auto Reset
Low Pressure Alarm
The system pressure is below the [LOW PRESSURE] set
point.
Auto Reset
Pump1 Failure
The controller has detected a fault (incorrect current
draw) on the respective pump
Manual Reset
Pump2 Failure
All Pumps Failure
All pumps not making up pressure on system
Replace pump
Insufficient Vacuum
The low water switch has been activated, either a leak
has occurred or the air non- return valve has failed or is
missing.
Manual Reset
Degassing Pump Failure
Pump not reaching the require pressure within degassing
mode
Manual Reset
Vac Cylinder high Pressure
Cylinder pressure alarm reached
Manual Reset
Stabilization Timeout
Either the pumps have run for too long or the pressure
has not reached the required start pressure for the pump
within the time limit.
Manual Reset
Fault Codes
The following table gives the meanings of all fault codes used on the digital controller: