Hvac Cdc Volume 2 Questions & Answers - 100% Correct

Forward Curve fans are not recommended for use where dust or fumes would adhere to blades {Ans: }If spaces are not architecturally sealed, abnormal positive or negative pressures may throw the balances way off. {Ans: }The cog or notch on the bottom of the belt provides less slippage. {Ans: }Place radiators where the heat loss is greatest. {Ans: }When hot-water coils are used with entering-air temperatures below freezing, give consideration to piping the coil for parallel flow rather than counterflow. {Ans: }(In previous step 13), Read the initial flows of pressures and record without making any adjustments. {Ans: }Friction loss tables for hydronic systems vary in value depending on the condition of the piping system and the type of pipe or booting used. {Ans: }Static pressure developed by a fan will vary in direct proportion to the changes in air density. {Ans: }A single-zone system's use is limited to situations where variations occur almost uniformly throughout the zone served or where the load is stable; in multiple installations, a variety of conditions can be handlers efficiently. {Ans: }Sensitivity to odor intensity also can change with changes in temperature and humidity and