2023 Humidimizer Training Day 2 Test

2023 Humidimizer Training Day 2 Test

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Question 1 of 21

1. Question
When a system is in Sub-Cooling Mode, you should expect the leaving air temperature to be _________ warmer than Normal Mode.
- 0 – 5°F
- 5 – 7°F
- 10 – 15°F
- Same temperature as Normal Mode
- None of the above
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Question 2 of 21

2. Question
All Humidimizer unit will include accessories
- Crankcase heaters
- Low ambient temperature lockout thermostat
- Low ambient head pressure controls
- All the above
- None of the above
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Question 3 of 21

3. Question
When the system is in Sub-Cooling Mode, the CSV (cooling solenoid valve) will be?
- Open
- Closed
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Question 4 of 21

4. Question
Which mode caused the DSV (discharge Solenoid valve) to be energized?
- Normal Cooling Mode
- Reheat Mode
- Sub-Cooling Mode
- Heating Mode
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Question 5 of 21

5. Question
Humidimizer Reheat Mode is activated to address Latent humidity load and not effect sensible load.
- True
- False
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Question 6 of 21

6. Question
If a customer is complaining that the conditioned space is uncomfortable, it could be caused by?
- Improper refrigerant charge
- Dehumidification setpoint too high
- System oversized
- All the above
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Question 7 of 21

7. Question
Which transform is used to control 24vac to the Humidimizer solenoids?
- Transformer 1
- Transformer 2
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Question 8 of 21

8. Question
What 24vac control signal determines Sub-Cooling or Reheat Mode?
- Y1
- Y2
- Dehumidification demand
- W1
- All the above
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Question 9 of 21

9. Question
At what temperature will Sub-Cooling and Reheat Mode be locked out at?
- 30°F
- 40°F
- 50°F
- Never locked out
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Question 10 of 21

10. Question
What type of evaporator metering device is used in a Type 2 Humidimizer?
- TXV
- Accutrol
- EXV
- None of the above
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Question 11 of 21

11. Question
A Type 2 Humidimizer with 2 refrigerant circuits will have ______ solenoid valves.
- 2
- 3
- 4
- 5
- 6
Correct

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Question 12 of 21

12. Question
In the Normal Cooling Mode, which solenoid valve will be normally closed?
- DSV (Discharge)
- CSV (Liquid)
- Both
- Neither valve is closed
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Question 13 of 21

13. Question
If the space temperature and humidity level is higher than the thermostat and humidity setpoint, what mode will be active?
- Normal Cooling Mode
- Sub-Cooling Mode
- Reheat Mode
- Heating Mode
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Question 14 of 21

14. Question
When “Y1” circuit energizes the CR1 relay on the Reheat control board, it opens and locks out the RDV (discharge) circuit solenoid?
- True
- False
Correct

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Question 15 of 21

15. Question
If the smoke alarm safety N/C control circuit opens, all the accessory control boards will lose 24vac?
- True
- False
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Question 16 of 21

16. Question
The Sub-Cool Reheat coil is located _____________ the evaporator coil.
- Before
- Downstream
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Question 17 of 21

17. Question
When the system is in heating mode “W”, the system can still activate Reheat mode?
- TRUE
- False
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Question 18 of 21

18. Question
When refrigerant charging a Humidimizer system, what mode should the system be in?
- Normal Cooling Mode
- Sub-Cooling Mode
- Reheat Mode
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Question 19 of 21

19. Question
The outdoor economizer damper can open and provide free cooling when the system is in Reheat Mode?
- True
- False
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Question 20 of 21

20. Question
Three way liquid solenoids are used in ___________ Humiditrol systems.
- Type 1
- Type 2
- Type 3
- Are never used
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Question 21 of 21

21. Question
On an EcoBlue system with ECM blower motor, if the blower motor will not cycle on and there is 24vac at the “G” terminal, what else should be checked?
- IFO 24vac circuit from the Ignition Control Board
- Line voltage to the blower motor
- 10 vdc signal from the ECM motor to Main Control Board
- All of the above
- None of the above, just change the motor
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