Hello,

I have a SZRH system which should provide outside air to the FC system.
The air it provides should always be 68 F. What temperatures shall I put
for cooling design and heating design / thermostat setpoint T. I put min
supply temp and max supply temp to 68 F and the other design
temperatures to 53/90F cause I do not have a thermostat there ( the air
is always provided with 68 F). Then I specified the OA constant to 4000
cfm and determined the min outside air ratio =1. Is there sth wrong with
my temperature settings as I do not get any coil loads for the system
(SS-J report)? When I set all temperatures to 68 F the ventilation air I
require is too huge. Do I have to put the min OA ratio to 1, 0 or shall
I leave it blank for the FC system? I mean is it enough to put OA from
system SZRH? Cause someone told me I have to put it to 0 as I do not
have any outside air put I do it is from the system. I am confused.

Thanks for your help.

Verena