Quiz Questions that were wrong

Question 1

Gas/Steam Controls
What safety device protects steam boiler from high pressure?
What is the setting on that device?

Answer 1

A Relief Valve.
15 psi.

Question 2

Gas/Steam Controls
What device detects a blocked flue passageway inside a boiler?

Answer 2

Flame Roll Out
(F.R.O.)

Question 3

Gas/Steam Controls
What detects a blocked flue pipe or chimney way?

Answer 3

Spill Switch
(S.S.)

Question 4

Gas/Steam Controls
Terminals 1-2 on a low water cut off are used in the ________ circuit

Answer 4

The Burner/Safety Circuit

Question 5

Gas/Steam Controls
Terminals 3-4 are used for what on a low water cut off?

Answer 5

Automatic Feeder

Question 6

Gas/Steam Controls
The main steam vent should be installed ________ inches from the end of a steam main.

Answer 6

15

Question 7

Gas/Steam Controls
What control can be installed on a steam boiler to add water?

Answer 7

Automatic Feeder

Question 8

Aquastats
Using a high-limit and low-limit aquastat, will the circulator run if the low limit is not satisfied and there is a call for heat?

Answer 8

No.
(It would be pointless to circulate cold water)

Question 9

Aquastats
Low-limit is most commonly used on a boiler with a:
a. indirect heater
b. flat plate heat exchanger
c. water heater
d. tankless coil

Answer 9

d. tankless coil

Question 10

Aquastats
Terminals C1 and C2 put out ________ volts

Answer 10

120 volts A.C.

Question 11

Aquastats BONUS-5 points
When do you need a 2nd hi-limit control and why? (must have both correct)

Answer 11

WHEN: there are 3 or more zones and an indirect heater.
WHY: in case the first hi-limit control fails.

Question 12

Zone Controls
If you have 4 zones and are zoning with zone valves, how many circuators are needed?
a. 4
b. 2
c. 1
d. none

Answer 12

c. 1

Question 13

Zone Controls
What is the maximum number of zone valves that you can install on a 40 va transformer?
a. 1
b. 3
c. 40
d. none

Answer 13

b. 3

Question 14

Zone Controls
When the end switch is made on a zone valve, what voltage comes from the end switch?
a. 24 volts
b. 120 volts
c. 240 volts
d. none

Answer 14

d. none

Question 15

Zone Controls
When using a relay pack how many transformers are needed in the relay pack?
a. 1
b. 2
c. as many as there are zones
d. none

Answer 15

a. 1

Question 16

Zone Controls
When using zone valves you must wire them with what voltage to the motor?
a. 240 volts
b. 120 volts
c. none
d. 24 volts

Answer 16

d. 24 volts

Question 17

Zone Controls BONUS-5 POINTS - MUST HAVE BOTH CORRECT
Can you zone steam? If so what type of zone valve has to be used? Explain in detail for full credit.

Answer 17

Yes. Must use a slow opening (3-5 minutes) zone valve.