Overloading Chiller

[axlegrinder]

I am being asked to bless the use of 90T chiller for an extension to a retirement home.

The unit is a York 90T 2 reciprocating compressor with a water cooled condenser.

I want to add about 40T load to this chiller.
I believe the chiller is currently operating between 40 and 60T.

My question is, if the unit encounters a load of 10 to 15T greater than its nameplate capacity, what will be the outcome? Will the unit "float" to a higher operating point, or will it shutdown on excessive suction pressure , excessive motor current or some other limitation?

Any thoughts would be helpful.

 

[imok2]

If all controls are set and in good order, the chiller should " float' to a higher operating point and just keep running

 

[IRstuff]

If it's overloaded, it simply won't cool the way it's supposed to, or it'll do it at an excessive cost, or it will fail sooner than normal, or all of the above.

TTFN

FAQ731-376

 

[absrbrtek]

If it has a newer style controller, the machine will unload due to high suction or high amperage. I would rather see a recip chiller run at full load than unloaded due to excessive starts like you had before you added the new load to it. JMHO