Lets get comfy
The main purpose of a heating system
What is comfort
These materials are used between structural members and reduce the movement of heat
What are insulators
This temp differential is used in hot water heating systems
What is 20 F
The main consideration in loop layouts is that the warmest water should be delivered to the greatest heat loss first and should pass along the outside wall about ____ inches away from the first pass
What is 6"
These tank helps stop the prv from tripping due to pressure fluctuation
What is an expansion tank
Heating systems are designed to have this temp for humans to be comfortable
What is 20 C
This is the difference between the two sides of material where one is inside and the other outside
This is the minimum IDT for indoor living spaces
What is 22 C
Maximum recommended length of a tubing loop for a 1/2" system
What is 300 feet
The old expansion tanks could become waterlogged and the new style is called a _________ type
What is diaphragm
Radiant floor heating is designed to hit the ideal heat curve at this height
What is 5 feet
The design temp chart for cities is based on the lowest expected temp for this percentage of the coldest month of the yeat
What is 2.5%
This is the IDT for unfinished basements
What is 18 C
This pex type can be repaired with heat and is the best for in floor heating
What is type A
The expansion tank should reach maximum pressure about ____ psi lower then the relief
What is 5
Heat is measured by its intensity and quantity otherwise known as this unit
What are BTU
This loss of heat is lost from conduction through the building structure.
What is transmission loss
This value represents a combination of all material in a section of building and is used for sizing the heat loss
What is the U value
A rule of thumb for bend radius is _____ X the od of the tubing
What is 10
I ran out of expansion tank questions so what is the moving part of a switch
What is a throw
Given the choice of heating systems this is the ideal one for human habitation
What is in floor heating
This value is an expression of how long in hours it takes for 1 btu to pass through 1 square foot of material
What is the R value
This system has pex embedded within concrete
What is a wet system
You cannot embed a joint or other connection in this type of installation
What is concrete
I ran out of expansion tank questions so what is the non moving part of a switch
What is a pole