Nexus PSD Handbuch
!
www.nexusvalve.com
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 1 / 35
Deaerating Equipment
Nexus PSD
Operation & Maintenance Manual
Rev!3.0!
!
!
! !
!
!
www.nexusvalve.com
!
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 2 / 35
Customer Details
Please fill in information future reference:
Company: Contact:
Address: Tel No:
Fax No:
Post Code: E-mail:
Equipment Details
Details of model and serial number may be found on the label
Model: Serial No:
Purchase date: Purchased From:
!
Note:!
A!competent!and!qualified!mechanical!contractor!must!be!used!to!install,!commission!and!service!this!
equipment.!This!Operation!&!Maintenance!manual!must!be!followed.!!
!
For!further!advise!on!installation!please!contact!Nexus!Valve!![1-888-900-0947!-!www.nexusvalve.com]!
!
Remember!to!fill!in!installation!and!commissioning!details!for!future!reference.!
!
!
!
!
!
!
!
!
!
!
!
!
!
! !
!
!
www.nexusvalve.com
!
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 3 / 35
Commissioning Record
Digital!Controller!
!
As!Found!
On!Completion!
Start!Pressure!
!
!
PSI!
Stop!Pressure!
!
!
PSI!
Alarm!Pressure!
!
!
PSI!
Normal!Minutes!
!
!
Mins!
Turbo!Hours!
!
!
Hours!
Timeout!Minutes!
!
!
Mins!
Purge!Seconds!
!
!
Secs!
Pump!Count!
!
!
!
Pump!Hours!
!
!
!
Alarm!Count!
!
!
!
Power!Interrupted!
!
!
!
Pumps!Sense!
!
!
Y/N!
Turbo!Mode!
!
!
Y/N!
Service!Reminder!
!
!
Y/N!
ID!Number!!
!
!
!
!
Contractor
Signature:
Date:
/
/
Customer
Signature:
Date:
/
/
!
!
! !
!
!
www.nexusvalve.com
!
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 4 / 35
Contents'
!
Customer!Details!...............................................................................................................................................................................................!2!
Equipment!Details!.............................................................................................................................................................................................!2!
Commissioning!Record!......................................................................................................................................................................................!3!
About!this!Manual!.............................................................................................................................................................................................!5!
Conventions!used!in!this!Manual!.................................................................................................................................................................!5!
Typography!...................................................................................................................................................................................................!5!
Where!to!find!more!Information!..................................................................................................................................................................!6!
Equipment!Overview!.........................................................................................................................................................................................!6!
Principal!of!Operation!Vacuum!Deaerator!...................................................................................................................................................!7!
Installation/Capacity!.........................................................................................................................................................................................!8!
Pipe!Connections!..........................................................................................................................................................................................!8!
Typical!Installation!Diagram!Vacuum!Deaerator!..........................................................................................................................................!9!
Floor!Standing!Clearance!and!Connection!Requirements!...............................................................................................................................!10!
Electrical!Power!Supply!..............................................................................................................................................................................!11!
Fault!Contacts!.............................................................................................................................................................................................!12!
Commissioning!................................................................................................................................................................................................!13!
Pre-Commissioning!Checklist!.....................................................................................................................................................................!13!
Controller!Overview!...................................................................................................................................................................................!14!
Deaerator!Controller!Programming!...........................................................................................................................................................!15!
Purge!Seconds!Reference!Times!............................................................................................................................................................!16!
Hydraulic!Commissioning!...........................................................................................................................................................................!17!
Operation!........................................................................................................................................................................................................!19!
For!practical!guidance!on!diagnosing!and!rectifying!faults,!please!refer!to!the!Troubleshooting!section!of!this!manual.!........................!19!
Deaerating!Fault!Codes!..............................................................................................................................................................................!19!
Troubleshooting!..............................................................................................................................................................................................!21!
Maintenance!...................................................................................................................................................................................................!22!
Wiring!location!list!..........................................................................................................................................................................................!25!
Spares!..............................................................................................................................................................................................................!26!
Electrical!Items!...........................................................................................................................................................................................!26!
Deaerator!Unit!................................................................................................................................................................................................!27!
Service!Log!......................................................................................................................................................................................................!28!
Warranty!Statement!.......................................................................................................................................................................................!30!
Warranty!Details!.............................................................................................................................................................................................!31!
Notes!...............................................................................................................................................................................................................!32!
Notes!...............................................................................................................................................................................................................!33!
Notes!...............................................................................................................................................................................................................!34!
!
!
! !
!
!
www.nexusvalve.com
!
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 5 / 35
!
About this Manual
This!Operation!and!Maintenance!Manual!contains!all!the!necessary!information!to!install,!commission,!operate!
and!maintain!Vacuum!Deaeration!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.!
!"#$%&'(!!!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!
!
!
!
!
!
!
!
!
! !
!
!
www.nexusvalve.com
!
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 6 / 35
!
'
Where'to'find'more'Information'
!
For!further!information!please!visit!the!Nexus!Valve!Website!at!the!following!URL:!
www.nexusvalve.com!
Alternatively,!please!contact!the!Nexus!Valve!offices!using!the!details!below:!
Phone:! ! 1-888-900-0947!
Email:! ! info@nexusvalve.com!
!
Equipment Overview
The!function!of!this!equipment!is!to!provide!a!means!of!dissolved!air!removal!from!the!water!used!in!sealed!
heating!and!cooling!systems.!!
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.!
!
www.nexusvalve.com
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 7 / 35
Principal'of'Operation'Vacuum'Deaerator'
The!following!schematic!shows!the!internal!arrangement!of!a!Vacuum!Deaerating!unit:!
Water!is!allowed!into!the!Vacuum!cylinder!through!a!safety!solenoid!(13),!a!pressure!reducing!valve!(14)!
and!a!special!variable!bypass!valve!(15).!
The!pressure!reducing!valve!(14)!is!used!to!limit!the!water!held!within!the!vacuum!cylinder!to!
approximately!18!PSI.!This!is!seen!as!the!first!pressure!step.!
When!the!vacuum!cylinder!is!full!and!registering!a!suitable!start!pressure!(8b)!the!pumps!(9a/9b)!activate.!
At!the!same!time!the!special!variable!bypass!valve!(15)!opens!fully!to!allow!the!cylinder!water!to!be!
completely!flushed!back!into!the!system!by!the!pumps!(9a/9b).!This!purge!cycle!ensures!that!the!
maximum!possible!amount!of!aerated!water!will!be!exposed!to!the!vacuum!process.!
After!the!vacuum!cylinder!has!been!refreshed,!the!variable!bypass!valve!(15)!restricts!the!flow!into!the!
vacuum!cylinder.!The!pumps!(9a/9b)!continue!to!draw!water!out!of!the!cylinder!and!create!a!vacuum!
within!the!cylinder.!The!pumps!(9a/9b)!then!stop!after!a!5!second!dwell!period.!!
The!vacuum!created!within!the!cylinder!is!eroded!by!the!incoming!water!through!the!variable!bypass!valve!
(15) at!a!low!flow!rate,!this!gently!increases!the!pressure!within!the!cylinder!and!forces!the!released!air
pocket!out!through!the!Automatic!Air!Vent!(AAV)!on!top!of!the!cylinder.
The!equipment!is!connected!to!the!main!system!via!2!isolation!valves!(7a/7b)!and!backflow!from!the!
system!is!prevent!by!a!non-return!valve!(10a).!
!
www.nexusvalve.com
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 8 / 35
Installation
This!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!heavy!supporting!base.!
Please!refer!to!the!appropriate!datasheet!for!the!maximum!working!pressure!and!temperature!of!
the!pressurization!unit.!The!conditions!at!the!point!of!connection!to!the!system!must!not!exceed!
these!values.!
Unit'Capacity'
One!FPSD-250D!can!handle!a!system!up!to!39,625!gallons!of!system!volume.!Consult!factory!for!
Larger!volumes.!
Pipe'Connections'
Where!applicable,!to!avoid!damaging!the!float!valve,!the!mains!water!supply!pipe!must!be!flushed!
before!connection.!
Deaerating!connections!(2of)!to!the!return!header!must!be!made!in!the!horizontal!plane!to!
prevent!floating!or!heavy!debris!entering!the!pipework!to!this!equipment.!
ü ü!!û û!
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.!
!
!
! !
!
!
www.nexusvalve.com
!
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 9 / 35
'
'
Typical'Installation'Diagram'Vacuum'Deaerator'
Install!PSD!unit!on!vibration!pad!or!4!rubber!isolator!pads!2!“!thick.!
!
!
!
! !
!
!
www.nexusvalve.com
!
© 2014 Flamco group. All rights reserved.
We reserve the right to change designs and technical specifications of our products.
Rev 4.0 Mar-16 Page 10 / 35
!
Floor Standing Clearance and Connection Requirements
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
Reference!
Connection!
Size!
Notes!
(
)*'"+,(-.//+&"%./'(
0(1(23(
4567!)89(
-844:-6!84(
;!6(!4-<=>:>(
(6?+(@.%/"(.A(&.//+&"%./('?.B$C(D+(%/("?+(
'*'"+,(E+"BE/F(./("?+('B&"%./('%C+(.A("?+(
&%E&B$#"%./(@B,@G(
4./HE+"BE/(I#$I+'F(@E+''BE+(E+CB&%/J(
I#$I+'(#/C(K5L(I#$I+'(,B'"(/."(D+(B'+CG(
Minimum!20”!!
Minimum!6”!!
Minimum!31.5”!!
Inhaltsverzeichnis
