In an induced-draft gas furnace, the first component to energize on a call for heat is:
A) The hot surface igniter. B) The gas valve.
C) The induced-draft blower. D) The indoor blower.
Question 2
What is the typical pressure setting for a relief valve at on a residential hot water boiler?
A) 15 psig B) 160 psig C) 12 psig D) 30 psig