ITAZ RQ: Final Exam (Chapters 8-13) Flashcards
All of the following are common problems found on gas piping EXCEPT:
a. leaks
b. excess pressure
c. rusting
d. no drip
e. improper connections
b. excess pressure
Which heat exchanger inspection method is usually included in a “by the Standards” inspection of a conventional gas furnace?
a. smoke test
b. water spray test
c. combustible gas analyzer test
d. flame pattern observation
e. removal of the heat shield
d. flame pattern observation
The high limit setting for a forced air gas furnace is typically
a. 150°F
b. 200°F
c. 250°F
d. 300°F
3. 50°F
b. 200°F
All of the following are problems you’ll commonly find on house air fan blowers EXCEPT:
a. dirty
b. poorly secured
c. noisy or vibrating
d. loose fan belt
e. installed backwards
e. installed backwards
The best way to determine if the automatic vent damper is operating correctly is to
a. turn up the thermostat and check for spillage at the draft hood
b. short circuit the vent damper to force it open
c. turn the thermostat up and get up on the roof to feel the chimney flue for heat
d. check for the presence of corrosion on the exhaust flue downstream of the damper
e. turn up the thermostat and listen for a loud grinding noise from the vent damper
a. turn up the thermostat and check for spillage at the draft hood
The main control system for the gas burner of a furnace is the
a. gas valve
b. thermocouple
c. thermostat
d. mono port
e. crossover igniter
a. gas valve
On gas furnaces, we like to see vent connectors
a. less than 3 feet long
b. less than 5 feet long
c. less than 8 feet long
d. less than 10 feet long
e. vent connector length is not a concern
b. less than 5 feet long
All of the following are common oil supply line problems EXCEPT:
a. leaking
b. corrosion or mechanical damage
c. unprotected
d. undersized
e. excess elevation change
e. excess elevation change
You come across an oil furnace that has a tripped primary control. You should
a. reset the primary controller and attempt to fire the burner
b. not reset the primary control
c. not reset the primary control and attempt to view the fireboat for pooling oil
d. not reset the primary control and attempt to view the heat exchanger for pooling oil
e. reset the primary control, but do not attempt to fire the burner
c. not reset the primary control and attempt to view the fireboat for pooling oil
A good strategy for checking for rust on an oil storage tank is to (choose two)
a. look for clay litter or sand underneath the tank
b. examine the bottom of the tank with a flashlight and mirror
c. probe suspicious points on the tank with a screw driver
d. check for an odor of oil
* e. check the integrity of the legs
b. examine the bottom of the tank with a flashlight and mirror
In an oil-fueled furnace, the component that ensures an adequate supply of draft air for the chimney is the
a. barometric damper
b. refactory
c. primary controller
d. vent connector
e. flame retention head
a. barometric damper
The common high temperature limit setting for a hot water boiler is
a. 150°F
a. 170°F
a. 190°F
a. 210°F
a. 230°F
a. 210°F
The normal operating pressure in a hot water boiler is
a. 2-5psi
b. 5-9psi
c. 9-12psi
d. 12-15psi
e. 15-18psi
d. 12-15psi
The safety control that prevents superheated water in a hot water boiler system is
a. the circulator
b. the pressure relief valve
c. the back flow preventer
d. the pressure reducing valve
e. the heat exchanger
b. the pressure relief valve
Which of the following statements about boilers is true?
a. unlike furnaces, boilers do not require high temperature limit switches
b. boilers cannot have central air conditioning or humidification systems added
c. boilers are not connected to the house plumbing system
d. boilers work by heating water to boiling temperature (212°F) or higher
e. it’s usually difficult to determine when the heat exchanger on a boiler has a crack or hole
b. boilers cannot have central air conditioning or humidification systems added
Each of the following is an operating control on a boiler EXCEPT:
a. primary control
b. zone control
c. backflow preventer
d. isolating valve
e. pressure reducing valve
c. backflow preventer
Radiators, convectors and baseboards can suffer from all of the following conditions EXCEPT:
a. rust
b. mixed types
c. balancing valve problems
d. obstructed airflow
e. wrong pressure setting
e. wrong pressure setting
The implications of chimney settling and leaning include all of the following EXCEPT:
a. collapse of the chimney
b. fire hazard
c. exhaust gas entry into the house
d. water leakage into the house
e. loss of drip edge on cap
e. loss of drip edge on cap
A masonry chimney serving a wood fireplace should be at least
a. 8 feet tall
b. 12 feet tall
c. 15 feet tall
d. 18 feet tall
e. 22 feet tall
c. 15 feet tall
Looking up from the basement around a metal chimney for a wood-burning fireplace, you should see
a. a metal roof flashing at the shingles
b. a neoprene roof flashing at the chimney
c. the floor framing cut back 1 inch from the chimney
d. a metal fire stop spacer
e. cellulose insulation piled around the chimney to prevent air leakage
d. a metal fire stop spacer
L vents
a. are used with gas appliances
b. are used with oil appliances
c. are used with wood stoves
d. are used with wood fireplaces
e. are used with gas, propane and oil appliances
e. are used with gas, propane and oil appliances
All of the following are basic components of a masonry wood burning fireplace EXCEPT:
a. a damper
b. a throat
c. a smoke shelf
d. a smoke chamber
e. a heat circulator
e. a heat circulator
An electric heating system has
a. a heat exchanger
b. a thermocouple
c. a draft hood
d. an overcurrent protection device
e. an induced draft fan
d. an overcurrent protection device
All of the following are common problems with masonry chimneys EXCEPT:
a. excessive offset from vertical
b. too short
c. missing or incomplete fire stopping
d. improper slope on a cap
e. not continuous through roof
e. not continuous through roof
Which of the following is NOT a common problem with an air conditioner compressor?
a. out of level
b. excess noise or vibration
c. inoperative
d. short cycling or running continuously
e. overcooling the refrigerant in the condenser
e. overcooling the refrigerant in the condenser
Common problems with duct system for air conditioners include all of the following EXCEPT:
a. too few supply or return registers
b. poor location for supply and return registers
c. obstructed registers
d. oversized ducts
e. a missing humidifier damper
d. oversized ducts
Common air-conditioner thermostat problems include all of the following EXCEPT:
a. poor location
b. not level
c. loose
d. dirty
e. wrong size
e. wrong size
Which of the following is NOT a common problem with a condensate collection system on a split-system air conditioner?
a. the condensate does into a 3/4 inch drain line
b. the pan is leaking
c. the drain is blocked
d. there is no trap
e. the discharge point is improper
a. the condensate does into a 3/4 inch drain line
Which of the following components would be found on a heat pump, but not a central air conditioning system?
a. house air fan
b. outdoor air fan
c. an emergency heat switch
d. a crankcase heater
e. an insulated suction line
c. an emergency heat switch
The function of the outdoor condenser coil on an air conditioner is to
a. transfer heat from the refrigerant into the outdoor air
b. pump refrigerant through the system
c. transfer heat from the house into the refrigerant
d. change the refrigerant from a high pressure, high temperature liquid to a low pressure, low temperature liquid
e. collect the condensate that accumulates on the system
a. transfer heat from the refrigerant into the outdoor air
The supply water piping diameter inside houses should be at least
a. 1/4”
b. 1/2”
c. 3/4”
d. 1”
e. 1.5”
b. 1/2”
Supply water pressure inside the house should not exceed
a. 20psi
b. 40psi
c. 50psi
d. 80psi
e. 150psi
d. 80psi
Exhaust flues on gas or oil fired water heaters
a. should have a minimum length of 10 feet
b. should slope down away from the water heater to allow for condensation
c. should have a slope of 1/4 inch per foot away from the heater
d. should be a friction fit together
e. should be cool to the touch when the system is operating
c. should have a slope of 1/4 inch per foot away from the heater
Which of the following statements about temperature/relief valves on water heaters is NOT true?
a. TPR valves protect against steam explosions
b. TPR valves shut off the water heater if the temperature exceeds 210°F
c. TPR valves should be connected to a discharge tube
d. TPR valves should operate at 150psi
e. The BTU rating of the TPR valve should be at least as big as the water heater BTU rating
b. TPR valves shut off the water heater if the temperature exceeds 210°F
All of the following are common drainage piping problems EXCEPT:
a. missing or inaccessible cleanest
b. pipe sizes that are reduced as you go downstream
c. clay tile piping buried in the soil
d. combustible piping used in multi-family buildings
e. non-standard piping materials
c. clay tile piping buried in the soil
The most common problem with plumbing fixtures is
a. poor pressure
b. poor flow
c. inoperative isolating valves
d. hot and cold faucets reversed
e. leaks
e. leaks
Common faucet problems include all of the following EXCEPT:
a. leaks
b. stiff
c. loose
d. cross connections
e. no isolating valves
e. no isolating valves
Common toilet problems include all of the following EXCEPT:
a. leaks
b. low water pressure
c. loose
d. flush mechanism inoperative
e. obstructed
b. low water pressure
Vulnerable spots in shower and bathtub enclosures include all of the following EXCEPT:
a. faucet penetrations
b. the top of the tile where it joins the conventional wall finish
c. soap dishes
d. grab bars
e. windows
b. the top of the tile where it joins the conventional wall finish
What is the most difficult problem to determine in a bathroom?
a. low water pressure
b. condition of shower pan under base
c. water hammer
d. faulty tub and tile caulking
e. continuously running toilets
b. condition of shower pan under base
