Study of the schematic diagram, Fig. 5-44, representing a ... Observe that the dashed lines represent external connections between separate instruments, and the solid lines, internal wiring. Relay contacts are ... Motor relay completes the power circuit to the burner motor, through MR2, and Mill also closes. Closing Hot anbsp;...
|Title||:||Automatic control of heating and air conditioning|
|Author||:||John E. Haines|