Answer the following statements true (T) or false (F)
1. Adding thermal mass to save energy is a good economic investment.
2. Owners should be encouraged to use more insulation than the minimum prescribed by ASHRAE Std. 90.1.
3. For climate Zone 4 higher ventilation levels always result in higher air conditioning energy.
4. For climate Zone 4 higher ventilation levels always result in higher heating energy.
1. FALSE
2. FALSE
3. TRUE
4. FALSE
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All chemical thinners work best at temperatures in the 40s, whereas overthinning will occur at temperatures in the mid to upper 60s, and no thinner is safe at high temperatures
Indicate whether the statement is true or false
Why are copper fittings cleaned before soldering or brazing?
A) To remove oxides B) To create enough clearance so that the pipe will fit into the fitting C) To enhance the aesthetic appearance of the completed joint D) To make it easier to see the junction between the fitting and the pipe
Wait states are used to ensure that processor signals meet the setup and hold times of system devices
Indicate whether the statement is true or false
If electric heating elements are used in conjunction with a heat pump, when do they operate?
A) The electric heating elements operate in the second stage. B) The electric heating elements operate simultaneously with the heat pump. C) The electric heating elements operate in the first stage. D) The electric heating elements operate whenever the heat pump is not operating.