Chapter 105

Question 0

A modulating steam heating boiler:
A) is always fully automatic
B) will have a wide operating pressure range
C) will have a constant fuel flow rate
D) will have a constant combustion air flow rate

Answer 0

B) will have a wide operating pressure range

Question 1

A low fire switch:
A) is part of the start-up logic sequence
B) takes no part in the start-up of an automatic boiler
C) is a normally closed switch
D) utilizes a thermal element for its operation

Answer 1

A) is part of the start-up logic sequence

Question 2

A high gas pressure fuel cut-off switch:
A) utilizes a thermal element for its operation
B) is never a manual reset device
C) must be located upstream of an automatic fuel valve
D) opens when gas pressure is too high

Answer 2

D) opens when gas pressure is too high

Question 3

The types of burners required for high-low Fire control are:
A) steam atomizing
B) air atomizing
C) spud jet
D) multiple nozzles

Answer 3

D) multiple nozzles

Question 4

When a boiler is shut down on the high limit control, what must the operator do before starting the boiler up again?
A) restart the forced draft fan
B) reset the lockout on e high limit controller
C) reset the boiler main power supply
D) switch the boiler control to the low-fire mode

Answer 4

B) reset the lockout on the high limit controller