Oil-fired heating systems move hot air from the furnace through hot air ducts that in turn connect to hot air registers strategically located throughout the home.
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Q10: NEC 422.12 requires that central heating equipment
Q11: Because they have internal overload protection, listed
Q12: Thermostats are usually mounted approximately _ in.
Q13: Most residential heating systems are packaged units
Q14: Class 2 wiring _ permitted in the
Q16: _ circuits offer alternative wiring methods regarding
Q17: Hot water systems are very adaptable to
Q18: A remote-control circuit is any electrical circuit
Q19: Class 2 power source voltage limitations, current
Q20: Manufacturers of heating and cooling equipment provide
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