Which of the following rules contain the words shall or shall not and must be adhered to?
a. Permissive rules
b. Mandatory rules
c. Required rules
d. Prohibitive rules
Question 2
The metering device for most ductless systems not using VRF technology is _____.
a. a fixed restrictor
b. a thermostatic expansion valve
c. located in each outdoor unit
d. located in the indoor unit