Engine 2014: Motor Plants and Auxiliary Boilers

1. A be designed to automatically relight the boiler fires after a low water shutdown
2. B incorporate an open bimetallic helix pyrostat stack switch
3. C be capable of closing the fuel valves in not more than 4 seconds after a flame failure
4. D provide a trial for ignition period of not more than 90 seconds

Tip: press A-D to answer