C_Henderson
21-11-2006, 09:03 PM
I am currently working on 3 Lieber Hiross units in a server room.
Number 1 runs every 20 mins or so to get the return air down to 20 degrees (all the 3 units have a 20 degree setpoint on return air) There isnt much heat load in this area of the room...
Number 2 runs consistantly 24-7 as there is a lot of heat coming from this area near the return air vent.
Number 3 never runs due to equipment being moved and therefore no having no load to bring the return air temp up. it just basically acts as a fan.
1, 2 and 3 are all along one wall. Supply up about 7.5ft and return about 4ft high. I'm doing alot of work on these. and cutting out all the other stuff im doin, i'd like to give number 2 a hand so its not running balls out all the time n try to get number 3 to do some work...
what i figured is that as return air sensor no 2 is sensing 26 degrees and number 3 19 degrees. could i put the return air sensor in the same ducting as number 2 so it senses 26degreees and kicks in with some cooling as well, so basically the units act as one. cooling and shutting off at the same time. i will also change the supply ducting on number 3 so it blows towards the heat load that number 2 is dealing with...
will this create any problems or has anyone tried it before? the only problem i can thing of is that if number two fails. Number 3 will do too...
any suggestions on this please?
Number 1 runs every 20 mins or so to get the return air down to 20 degrees (all the 3 units have a 20 degree setpoint on return air) There isnt much heat load in this area of the room...
Number 2 runs consistantly 24-7 as there is a lot of heat coming from this area near the return air vent.
Number 3 never runs due to equipment being moved and therefore no having no load to bring the return air temp up. it just basically acts as a fan.
1, 2 and 3 are all along one wall. Supply up about 7.5ft and return about 4ft high. I'm doing alot of work on these. and cutting out all the other stuff im doin, i'd like to give number 2 a hand so its not running balls out all the time n try to get number 3 to do some work...
what i figured is that as return air sensor no 2 is sensing 26 degrees and number 3 19 degrees. could i put the return air sensor in the same ducting as number 2 so it senses 26degreees and kicks in with some cooling as well, so basically the units act as one. cooling and shutting off at the same time. i will also change the supply ducting on number 3 so it blows towards the heat load that number 2 is dealing with...
will this create any problems or has anyone tried it before? the only problem i can thing of is that if number two fails. Number 3 will do too...
any suggestions on this please?