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a 10 x 40-mm h x b steel rectangular bar having compressive and tensile yield strengths of 300 mpa has a 6-mm-diameter
1 can the furnace drain and the air-conditioning drain be run with a common drain2 list the different types of gas
1 what is the purpose of the orifice why is it not a good idea to drill out orifices in the field2 what components are
question -the village of pongelton is in the valley of the river pong the mean flow of the river is 30 m3 the
1 discuss the evolution of the heat exchanger2 discuss the operation of an atmospheric burner3 explain why furnace
1 discuss the origin of natural gas list the three broad categories of fuel gases2 what are the products of complete
1 list the grades of fuel oil and give a brief description of each type2 what is the difference between distillate oil
1 list the safety precautions that should be observed when starting a gas furnace2 explain the difference between
1 explain what a limit switch is its function and how it affects the control circuit2 state why the legend and the
1 what is the function of an oil safety valve2 give a prestart checklist when checking a newly installed oil furnace3
1 how should the output of an oil furnace ignition transformer be tested2 what components on an oil furnace should be
1 what voltage does the ignition transformer provide to the electrodes2 how does a cad cell sense the flames3 what does
1 list some types of oil pump problems2 when should an oil pump internal bypass plug be removed3 how can a leak in the
1 what is necessary to make a safe connection with aluminum wire2 an electric furnace has a minimum circuit ampacity
1 how is the overcurrent protection sized for an electric furnace2 discuss the effect of reduced voltage on electric
1 list three ways of checking the heating elements of an electric furnace2 describe how a clamp-on ammeter can be used
1 what are the two main types of defrost controls used on heat pumps today2 describe what happens during the defrost
1 what is the standard ceiling height in a residence name the two most common problems with basements2 name the
1 how is the water flow through a water-source heat pump measured2 what steps must be taken when installing
1 what are the indications a check valve has stuck closed on an outside coil2 name the four most predominant defrost
1 when installing a new valve it should be protected from getting too hot what is the maximum temperature the valve
1 why is the cooling temperature difference often different from the difference between the indoor and outdoor
1 what would the htm be for a building panel with a u value of 08 and a temperature difference of 40degf2 what is meant
1 list the factors to consider when choosing a supply register2 what are the noise criteria curves3 using figure 71-25
1 tell why actual motor voltage and amperage should be field measured and logged under full load conditions2 in a