Questions and Answers
What is the purpose of the Damper Positioning Switch (Hi-Low-Auto) on the heating boilers?
To adjust the air damper and firing rate control valve according to the load on the boiler
What is the function of the Burner On-Off switch on the heating boilers?
To start and stop the boiler manually
In what position does the modulating motor remain when the Damper Positioning Switch is set to LO?
Low-fire position
What determines the load on the boiler for hot water boilers?
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What type of control does a packaged dual-fuel boiler have when firing on oil?
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What happens to the air damper and firing rate valve when firing on gas?
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What happens when the damper positioning switch is set to HI?
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What happens when the manual-automatic switch is set to MANUAL and the damper positioning switch is set to AUTO?
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What happens when firing on oil and a switch in the modulating motor permits only one oil nozzle to fire?
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What determines the position of the modulating motor when the damper positioning switch is set to AUTO?
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