FDNY Z51 Study Guide 2025 Exam with
Questions and Correct Answers 2025
Engineer's Minimum Reading Log Requirement - CORRECT ANSWER-An engineer
needs to log readings once per shift.
Engineer's Minimum Reading Log Requirement - CORRECT ANSWER-An engineer
needs to log readings once per shift.
Phase 2 Firemen Service - CORRECT ANSWER-The elevator operator is the only
person that can control the elevator.
Phase 2 Firemen Service - CORRECT ANSWER-The elevator operator is the only
person that can control the elevator.
Engineer's Responsibility with Running Machine - CORRECT ANSWER-If the machine
is running, the engineer should not leave the building.
Engineer's Responsibility with Running Machine - CORRECT ANSWER-If the machine
is running, the engineer should not leave the building.
Emergency Power Testing Frequency - CORRECT ANSWER-Emergency power testing
must be done monthly.
Emergency Power Testing Frequency - CORRECT ANSWER-Emergency power testing
must be done monthly.
AB29 Certificate of Fitness Holder's Responsibility - CORRECT ANSWER-The holder
should inspect the battery system.
AB29 Certificate of Fitness Holder's Responsibility - CORRECT ANSWER-The holder
should inspect the battery system.
Gauge Reading for Chilled Water System - CORRECT ANSWER-A gauge reading of
saturation pressure of refrigerant with chilled water as the cooling medium estimates the
temperature of the chilled water being pumped to the spaces being cooled.
, Gauge Reading for Chilled Water System - CORRECT ANSWER-A gauge reading of
saturation pressure of refrigerant with chilled water as the cooling medium estimates the
temperature of the chilled water being pumped to the spaces being cooled.
Refrigerant Escape Awareness - CORRECT ANSWER-In the event of a refrigerant
escape, the engineer should be aware of asphyxiation.
Refrigerant Escape Awareness - CORRECT ANSWER-In the event of a refrigerant
escape, the engineer should be aware of asphyxiation.
Chemical Fire Extinguisher and System Requirement - CORRECT ANSWER-A
chemical fire extinguisher and system are needed where water is not sufficient.
Chemical Fire Extinguisher and System Requirement - CORRECT ANSWER-A
chemical fire extinguisher and system are needed where water is not sufficient.
Refrigerants Inside Machine Gauges - CORRECT ANSWER-The refrigerants found
inside the machine gauges are the same type as the refrigerant inside the machine.
Refrigerants Inside Machine Gauges - CORRECT ANSWER-The refrigerants found
inside the machine gauges are the same type as the refrigerant inside the machine.
Fireproof Decorations Purpose - CORRECT ANSWER-Fireproof decorations in
buildings are used so they don't catch fire in an emergency.
Fireproof Decorations Purpose - CORRECT ANSWER-Fireproof decorations in
buildings are used so they don't catch fire in an emergency.
Water Regulating Valves Usage - CORRECT ANSWER-Water regulating valves are
used to maintain condenser pressure to a predetermined level.
Water Regulating Valves Usage - CORRECT ANSWER-Water regulating valves are
used to maintain condenser pressure to a predetermined level.
Steam Turbine Warm-up Time - CORRECT ANSWER-It takes 10 to 15 minutes to
warm up a steam turbine.
Steam Turbine Warm-up Time - CORRECT ANSWER-It takes 10 to 15 minutes to
warm up a steam turbine.
Pressure Relief Out vs. Fusible Plugs - CORRECT ANSWER-A pressure relief out is
better than fusible plugs to minimize refrigerant loss.
Pressure Relief Out vs. Fusible Plugs - CORRECT ANSWER-A pressure relief out is
better than fusible plugs to minimize refrigerant loss.
Hot Work Near Sprinkler Head - CORRECT ANSWER-To prevent the fire alarm system
from going off, put a non-combustible barrier to protect the sprinkler.
Hot Work Near Sprinkler Head - CORRECT ANSWER-To prevent the fire alarm system
from going off, put a non-combustible barrier to protect the sprinkler.
Questions and Correct Answers 2025
Engineer's Minimum Reading Log Requirement - CORRECT ANSWER-An engineer
needs to log readings once per shift.
Engineer's Minimum Reading Log Requirement - CORRECT ANSWER-An engineer
needs to log readings once per shift.
Phase 2 Firemen Service - CORRECT ANSWER-The elevator operator is the only
person that can control the elevator.
Phase 2 Firemen Service - CORRECT ANSWER-The elevator operator is the only
person that can control the elevator.
Engineer's Responsibility with Running Machine - CORRECT ANSWER-If the machine
is running, the engineer should not leave the building.
Engineer's Responsibility with Running Machine - CORRECT ANSWER-If the machine
is running, the engineer should not leave the building.
Emergency Power Testing Frequency - CORRECT ANSWER-Emergency power testing
must be done monthly.
Emergency Power Testing Frequency - CORRECT ANSWER-Emergency power testing
must be done monthly.
AB29 Certificate of Fitness Holder's Responsibility - CORRECT ANSWER-The holder
should inspect the battery system.
AB29 Certificate of Fitness Holder's Responsibility - CORRECT ANSWER-The holder
should inspect the battery system.
Gauge Reading for Chilled Water System - CORRECT ANSWER-A gauge reading of
saturation pressure of refrigerant with chilled water as the cooling medium estimates the
temperature of the chilled water being pumped to the spaces being cooled.
, Gauge Reading for Chilled Water System - CORRECT ANSWER-A gauge reading of
saturation pressure of refrigerant with chilled water as the cooling medium estimates the
temperature of the chilled water being pumped to the spaces being cooled.
Refrigerant Escape Awareness - CORRECT ANSWER-In the event of a refrigerant
escape, the engineer should be aware of asphyxiation.
Refrigerant Escape Awareness - CORRECT ANSWER-In the event of a refrigerant
escape, the engineer should be aware of asphyxiation.
Chemical Fire Extinguisher and System Requirement - CORRECT ANSWER-A
chemical fire extinguisher and system are needed where water is not sufficient.
Chemical Fire Extinguisher and System Requirement - CORRECT ANSWER-A
chemical fire extinguisher and system are needed where water is not sufficient.
Refrigerants Inside Machine Gauges - CORRECT ANSWER-The refrigerants found
inside the machine gauges are the same type as the refrigerant inside the machine.
Refrigerants Inside Machine Gauges - CORRECT ANSWER-The refrigerants found
inside the machine gauges are the same type as the refrigerant inside the machine.
Fireproof Decorations Purpose - CORRECT ANSWER-Fireproof decorations in
buildings are used so they don't catch fire in an emergency.
Fireproof Decorations Purpose - CORRECT ANSWER-Fireproof decorations in
buildings are used so they don't catch fire in an emergency.
Water Regulating Valves Usage - CORRECT ANSWER-Water regulating valves are
used to maintain condenser pressure to a predetermined level.
Water Regulating Valves Usage - CORRECT ANSWER-Water regulating valves are
used to maintain condenser pressure to a predetermined level.
Steam Turbine Warm-up Time - CORRECT ANSWER-It takes 10 to 15 minutes to
warm up a steam turbine.
Steam Turbine Warm-up Time - CORRECT ANSWER-It takes 10 to 15 minutes to
warm up a steam turbine.
Pressure Relief Out vs. Fusible Plugs - CORRECT ANSWER-A pressure relief out is
better than fusible plugs to minimize refrigerant loss.
Pressure Relief Out vs. Fusible Plugs - CORRECT ANSWER-A pressure relief out is
better than fusible plugs to minimize refrigerant loss.
Hot Work Near Sprinkler Head - CORRECT ANSWER-To prevent the fire alarm system
from going off, put a non-combustible barrier to protect the sprinkler.
Hot Work Near Sprinkler Head - CORRECT ANSWER-To prevent the fire alarm system
from going off, put a non-combustible barrier to protect the sprinkler.
