Author Question: How do gas furnaces ensure the production of a blue flame? A) The use of a manifold only B) The ... (Read 83 times)

stock · **on:** Jul 24, 2018

How do gas furnaces ensure the production of a blue flame?

A) The use of a manifold only B) The use of gas spuds and a manifold
C) The use of atmospheric combustion D) The use of gas spuds only

Question 2

What is the theoretical evaporation rate?

A) 1 percent of the water supplied for every 10F of cooling
B) 0.5 percent of the water supplied for every 1F of cooling
C) 5 percent of the water supplied for every 10F of cooling
D) 5 percent of the water supplied for every 15F of cooling