Exam (elaborations)
ABYC SYSTEMS CERTIFICATION EXAM REVIEW QUESTIONS AND ANSWERS
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ABYC SYSTEMS CERTIFICATION EXAM REVIEW QUESTIONS AND ANSWERS
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What is the max allowable water output temperature for hot water system?
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125 F
When testing an installed LPG system using the built-in pressure gauge, for how long
must there be no measurable drop in pressure after closing the cylinder supply valve?
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At least 3 minutes
What tool is used to measure shaft run-out
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Dial Indicator
Hydraulic system components shall not be installed in areas where operating
temperature exceeds _____ °F
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170 °F
what two items are necessary for a pump to discharge below waterline?
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Seacock valve and vented loop (or siphon break)
1 Watt equals how many BTU's per hour?
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, 3.412 BTU's Per hour = 1 Watt
Based on ABYC, metal fuel tanks installed above flat surfaces should be separated
from the surface by at least
A. 1"
B. 1/2"
C. 1/4"
D. There is no requirement
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C. 1/4"
What is the maximum allowable distance between supports for hydraulic lines?
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24 inches
Which of the following may have a check valve that might need to be removed during
winterization?
a. Water Tank
b. Water Heater
c. Control Valve
d. Relief Valve
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, b. Water Heater
What ingredient should never be used when cleaning brass LPG fittings?
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Ammonia - may cause cracks in brass fittings
Name the four main categories of pump types
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Piston, Impeller, Diaphragm, Centrifugal
Name four mechanical (non-electrical) factors that affect pump efficiency
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intake or discharge lift (head)
discharge hose length
hose bends (qty and radius)
hose interior roughness (corrugation)
cross-sectional reductions (check valves, thru-hulls, etc.)
What is the max pressure that a desalinator can impart to a storage tank?
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