Hi,
Your local HVAC company should be able to handle all of that for you. We
had three separate A/C units in our control room, and they ran 24x7...
even when it hit -30F during the winter. Have some places come give you
quotes for what you need. :)
Travis
On 9/28/2015 11:43 AM, Nate Burke wrote:
I'm looking to add backup cooling to a small computer room, <200sqft.
Primary cooling is via a RTU (roof top unit), but I can't put that on
our generator (240v genset vs 480v RTU). I'm thinking like a 2 or 3
ton Split system would be perfect. Problem is we're in the midwest,
and outdoor temperatures can drop to 0 or below over the winter.
Looking at the split systems, nobody seems to know if they will work
for cooling with outdoor temperatures that low. Online searching has
yielded results for Heat Pump units, where they want to Heat with low
temperatures. Has anyone had experience with Split systems cooling
with low outdoor temperatures? Are there special compressors built
for that use? I have heard about putting a thermostat on the fan line
to cut out the compressor fan below ambient X temp, or shrouding the
compressor to keep wind from blowing through it. But have not been
able to confirm from any HVAC contractor the validity.
This would only be for backup use, RTU Failure, or power outage. The
RTU is handling the load normally without an issue. My Current Backup
is Movincool units, but I want to reclaim the floor space, and make it
more permanent.
