« previous next »

Author Question: Installation clearances for rooftop units are required: A) To isolate the equipment from ... (Read 71 times)

olgavictoria

  • Hero Member
  • *****
  • Posts: 528
on: Jul 24, 2018
Installation clearances for rooftop units are required:
 
  A) To isolate the equipment from materials that might be damaged by refrigerant leaks.
  B) To ensure the correct airflow through the condenser coil.
  C) To maintain a safe distance between the wiring and combustible materials.
  D) To ensure that the weight of the unit does not rest directly on any roof trusses, beams, joists, or rafters.

Question 2

What controls the amount of gas entering the burner?
 
  A) The gas manifold pressure and the burner venturi size
  B) The draft created by the gas flames
  C) The gas valve
  D) The burner orifice size


maaaaaaaaaa

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Lysosomes Isolate Digestive Enzymes from the Cytoplasm Lysosomes Isolate Digestive Enzymes from the Cytoplasm
Goniometer and Its Use, Equipment Goniometer and Its Use, Equipment
Scoliometer and Its Use, Equipment Scoliometer and Its Use, Equipment
(a) The connection required to test a Halleffect sensor. (b) A typical waveform from a Hall-effect ... (a) The connection required to test a Halleffect sensor. (b) A typical waveform from a Hall-effect ...
Chemicals can adversely affect personal protective equipment (PPE) in three ways: They can permeate ... Chemicals can adversely affect personal protective equipment (PPE) in three ways: They can permeate ...
Bakeshop Tools and Equipment Bakeshop Tools and Equipment
Video: How to make cDNA Animation

For a complete list of videos, visit our video library