Air conditioning tube and fin coils are commonly available as:
A) "A" coils, "T" coils, and "O" coils. B) Slant coils, "A" coils, and "N" coils.
C) "N" coils, "T" coils, and "P" coils. D) Slant coils, "T" coils, and "P" coils.
B
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____________ might be an indication that the sealant compound or tape was not applied correctly.
Fill in the blank(s) with the appropriate word(s).
The basic parts of a stairway are risers, treads, and _____.
a. balustrades b. center-cut stringers c. stair framing d. handrails
Why must condensate pumps used with condensing furnaces be approved for furnace condensate use?
A) The condensate from a furnace is mildly acidic and can damage the materials in some condensate pumps B) The furnace manufacturer will void the warranty if the wrong condensate pump is used C) The condensate from a furnace is mildly alkaline and can damage the materials in some condensate pumps D) The condensate from a furnace is flammable and only furnace rated condensate pumps can pump flammable liquid
What is the total available static pressure for the ductwork in a system with the following specifications?
Blower: 0.6" WC total external static at design airflow Evaporator Coil: 0.25 in WC static pressure drop at design airflow Filter: 0.15 in WC static pressure drop at design airflow Registers and Grills: 0.05" WC static pressure drop at design airflow A) 0.15 in WC available static pressure B) 10 in WC available static pressure C) 0.6 in WC available static pressure D) 0.25 in WC available static pressure