View Full Version : NCM 350
02-19-2009, 06:29 PM
I am going to be working on some new replacement units in an old middle school that has an NCM 350 front end controller in it. This is going to be my first time working with this controller and I was wondering if any one knows how to map back the points. Do you use the .prn file like the NAE? Any help is appreciated.
02-19-2009, 07:09 PM
give me alittle more infor?
what type of controller?
what are you replacing?
02-19-2009, 07:35 PM
first did you add the point to the controller and is new controller or old controller?
if so here what to do and it old controller-
On the metasys
do you have a location made for the point?
if not need to add a system
then uploade ncm and global.
the open system
then the type of point(analog input)
then need to know hardware system(like nc1-hw)
then need to know hardware odject(unt-12)
then name the object(oa_t)
then uploade ncm and global.
02-19-2009, 09:05 PM
I haven't done anything at this job yet, I just know there is an NCM 350 front end that I have never worked with before. There is a new Unit Ventilator going in and 6 new air handlers units that are just big unit vents going in a gym. A separate UNT is going to be controlling each one of these new units. I just need to know how to map the points back to the NCM 350. Also, how do you reset the air temperature in a unit vent program in HVACPro?
02-19-2009, 09:09 PM
http://cgproducts.johnsoncontrols.com/MET_PDF/630010.pdf#xml=http://cgproducts.johnsoncontrols.com/search_lit.aspx?cmd=pdfhits&DocId=1701&Index=C%3a%5cinetpub%5cwwwroot%5c72%2e3%2e145%2e66 %5cquicklit%5cexcaliburCD&HitCount=20&hits=1+2+15d+15e+247+248+2fe+2ff+371+372+1b94+1b95 +3e62+3e63+9366+9367+bba5+bba6+d984+d985+&hc=176&req=ddl+programmers
here is the ddl programmers manual....should answer most of your questions. :)
02-19-2009, 09:12 PM
ok is this ncm only or do you have to metasys computer program?
so total of 6 new unt with discharge reset using zone temp?
you have hvapro?
not bad we can do
02-19-2009, 09:24 PM
Here one unit vent program that may work
ASHRAE Cycle II
A fixed minimum amount of outdoor air, normally 15 to 50%, is admitted during the heating and ventilating period. The percentage is gradually increased to 100%, if required, during the ventilating period. The heating valve and outdoor air dampers are operated in sequence as required to maintain space temperature. The discharge air sensor can override the zone thermostat action on the heating valve to open the valve. As the discharge temperature continues to drop, the heating goes to 100% and the outdoor damper closes to prevent discharge air from dropping below a minimum temperature.
But if not you can fine this by using the HVAC PRO (Help) then (Contents)
It tell you how each program works and you can pick the correct program
02-20-2009, 12:02 AM
I am going to be using Ashrae cycle II in my program. Does that include a discharge air reset or is that somewhere else in the program?
02-20-2009, 08:28 AM
as it said above only a discharge low limit control. Not discharge reset using zone temp.
02-20-2009, 11:23 AM
If you don't know much about PMI and the NCM, you better get JCI in for this. If you are replacing field controllers, you need to change the mapping in the NCM, and also if there is JC basic and GPL you need to know how this works. It's not as friendly as the NAE, as you need to complie - decomplie files.
02-20-2009, 01:17 PM
you better get JCI in for this
or someone who can work on JCI stuff.;)
02-20-2009, 06:12 PM
I can work on JCI stuff, I just dont have too much experience with the NCM 350
The NCM/OWS is not something you want to play with on the job. Lots of quirky stuff like DOS command line compiler, and JC Basic that will take long hours figuring out on you own.
Do the school and yourself a favor and hire someone to get you started. Not sure of your location, but most areas of the country are well stocked with independant JCI experts (gypsies as my old boss called them!) who will help out.
Remember the NCM is done as product line, so how much time do you want to spend learning the thing for one school...
Powered by vBulletin® Version 4.2.0 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.