Under ASHRAE Standard 15, what is the maximum allowable refrigerant concentration limit (RCL) used to determine if a machinery room is required?
-
A
The threshold at which refrigerant becomes flammable
-
B
The concentration at which refrigerant vapor becomes toxic to humans
-
C
The refrigerant concentration that would occur if the entire system charge were released into the occupied space
-
D
The maximum charge allowed per ton of cooling capacity