i2o PRV Guide

i2O Water Ltd: 4 Benham Road, Southampton Science Park
Southampton, SO16 7QJ, United Kingdom
www.i2owater.com | [e-mail] | [phone]
Company registration no. 98345 6784
PRV Control System
Installation and Commissioning Manual
Author: Imran Jones
Issue: 1.1
Date: 19 Apr 2017

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Introduction
The i2O PRV Pressure Management solution enables water utilities to achieve the
optimal network pressure automatically, with minimal operational support. It provides
accurate data collection from the PRV, where the Control Logger captures upstream and
downstream pressures along with flow. A separate Logger records critical point (or
control point) pressure for modelling of flow-related head loss and automatic
optimisation. The Control Logger and Advanced Pilot Valve (APV) are easy to install and
all the required hardware for installation is included in i2O kits.
The installation requires upstream, downstream and control space tappings at the PRV,
with shut-off valves fitted to each tapping prior to installation.
After installation, calibration and commissioning, the PRV control is adjusted remotely
using the i2O Web platform (oNet). The required profiles can be configured in oNet prior
to commissioning, and these settings will be applied when the controller first dials-up and
connects to the platform. The APV provides accurate, smooth and frequent adjustment
of the outlet pressures to ensure the PRV delivers the required scheduled pressures,
with smooth transitions and no hydraulic disturbance to the network.
Further information about the Configurator and dNet are available in the i2O Help Center
at support.i2owater.com. For support and assistance, please contact
[email protected]m

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i. Hardware installation procedure
 Install Control Logger and APV
mounting brackets
 Install APV mounting plate
 Mount Control Logger and APV to
brackets in the orientation shown.
Note: APV should be located
just above PRV to allow self-
bleeding (air)

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 Assemble hose connection
hardware to the PRV, fitting the T-
piece downstream and
Restriction Block upstream
 Select and fit the appropriate size
of fixed orifice to the Restriction
Block, based on the size of the
PRV
 Prepare quick release connectors
on 6mm hoses.

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 Connect 6mm hoses and cables
to Control Logger as shown:
RED: Upstream pressure (P1)
GREEN: Control Space
Pressure(Optional) (P3)
BLUE: Downstream pressure (P2)
A: Flow
B: APV (PILOT)
C: USB port to connect the Laptop
 If required, splice flow meter
cable in accordance with supplied
instructions
 Assemble Serto couplings onto
12mm hoses
A: Compression nut
B: Sleeve
C: Stainless steel insert
D: Male adapter

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 Connect 12mm hoses to APV and PRV as shown below:
 12mm black hoses should:
- Be as short as possible
- Have a long smooth
radius
- Have no kinks
- Be routed appropriately to
reduce strain
Important: Note that the APV
shaft moves in and out
approximately 10mm in normal
operation.
Ensure no rubbing or
restriction to the black hose
and do not clamp tubing

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ii. Calibration procedure
Before activating the i2O PRV Control System, the following prerequisites must be met:
 Verify correct installation of equipment
 Control Logger set up
 Flow cable connected
 Control Logger pre-assigned to a location / associated to a DMA, using the device
serial number in i2O Portal Platform
 Start Configurator; Download Configurator from your i2O Platform. For more
information on downloading and using Configurator, visit support.i2owater.com.
 Deploy device through Configurator
 This updates location/DMA details in the device and imports configuration
settings
 Check the flow calibration and adjust as required
 Ensure PRV is not under i2O control
Connect the Control
Logger to the Laptop and
open Configurator. After a
few seconds, the main
screen of Configurator will
appear showing the
different options.
You must be in service
mode in order to calibrate
the APV.
Once in service mode,
select the option “APV
Calibration”

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To consider before start the Calibration Process:
 All APVs are factory set to
provide approx. 18m
minimum downstream
pressure.
 Rotating the APV end cap
by “1-slot” is equivalent to
1m water pressure in both
directions. Use a C-
spanner to adjust the APV
where required.
 Always ensure the APV is
depressurized (hoses
disconnected) when
performing calibrations.
 When end cap contact is
made with the internal
spring, the equivalent
pressure is approximately
10m

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Before proceeding you must make sure that, the APV is isolated from PRV and cannot
affect the operational pressures currently set by the PRV.
Once in Configurator, Open “APV Calibration”.
Select the minimum pressure and downstream start pressure entering values
according to what we expect.
You need to ensure that the pilot has been mechanically set to its minimum spring
pressure and the starting pressure has been entered before clicking the “Calibrate”
button. If not, you have to mechanically set the pilot to the minimum spring pressure
and enter the starting pressure before continuing.
Click the button “Calibrate” and consecutives messages will appear on the main
screen. Please read carefully all of them before click ok!
When the calibration is completed, a green message will appear showing “Calibration
Successful” and the system is ready to be commissioned.

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Important note to consider:
When in Service Mode, the controller does not make any automatic adjustment of the
APV, regardless of any configuration it has received from oNet. As soon as you exit
Service Mode, the APV starts to control automatically from the starting point configured
in the calibration process.
For this reason, it is absolutely vital that the controller is left in service mode when the
shut-off valves on the PRV are opened, to ensure that the APV is still at the same
starting point when it starts to hydraulically control the pressure.
It is only after the pressure has stabilised and the PRV is controlled hydraulically by the
APV that the user should exit Service Mode and allow automatic control to start moving
the APV

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iii. Commissioning procedure
1. Ensure the APV is connected to the PRV but with the control space tap either
shut.
2. Open the upstream and downstream taps, this will pressurise the i2O APV and
pipe work. Check for leaks on both the hoses and the fittings at this point,
rectifying or repairing as necessary.
3. When you see pressures recorded on the i2O Configurator (“Live Data” Screen)
that are within acceptable limits for the location, slowly open the control space
tap.
4. The pilot will now take control of the valve and it is likely that some change in the
downstream pressure could be registered at this point.
Note: Different sized valves can react to changes in their control pressures at
different speeds, small valves can react almost instantly and can be very variable
whereas larger valves tend to move more slowly but be more stable.
5. Allow the pressures to stabilise before making any adjustments. Given the
variability of installation, it is possible for set pressures to be +/- 2meters from the
target pressure required. If this occurs, then adjust the end cap, using the C
spanner in the method described earlier, either in a clockwise or anti clockwise
rotation to achieve the target start pressure.
Do not change any other settings at this point; only adjust the APV end cap if
necessary.
6. At this stage, the pilot will work as a conventional hydraulic pilot and will attempt
to maintain the set fixed outlet pressure.
7. In order for the system to begin controlling, this must be correctly configured in
oNet, the oNet settings will take effect the next time the device dials up. It is
recommended that the installer forces a dial-up to check the behaviour before
leaving site, as control settings could immediately change pressure.
8. When active control is implemented and the user is satisfied with the correct
operation of the i2O system, then it is important that service mode is deactivated
before disconnection of the device from the Configurator.
Installation of the PRV Control System is now complete. If you experience any
difficulty or require assistance at any stage please email photographs of the
installation to [e-mail], stating the name and location of the site and
device serial number.

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Installation Checklist
No. Test Name Tick Comments
1 Installation hardware present
Shut off valves installed
Control space point available
( )
( )
( )
2 Mount APV rail and Control Logger bracket
Mount APV to rail using fittings supplied
Fit T-piece to and Restriction block PRV
( )
( )
( )
3 Connect red/blue tubing and cables
Connect Flowmeter
Connect APV 12mm hoses
Record current downstream pressure
( )
( )
( )
( )
Pressure: ………….(mH/psi/bar)
4 Adjust APV endcap to set minimum
pressure (if required)
Connect to Configurator and carry out
APV calibration
Record Current downstream pressure
Re-adjust endcap if necessary
Force Dial up from Configurator, check
pressures and PRV operation
( )
( )
( )
( )
( )
Pressure: …..…..... (mH/bar/psi)
5 Take photographs of:
 APV to Restriction Block
 PRV connections
( )
( )
If you experience any difficulty
or require assistance at any
stage. Email photographs to
[e-mail], stating
the name and location of the
site.
Installer name: Date:
APV Serial No. Fixed Orifice Size
Control Logger Serial No.
Notes and observations