student going crazy? over that question? oh are you in for a treat.
This is agreat place to come to and learn from . The people here will do all they can to explane things to you ---but---you have to have done your homework first. If you cant find the answer in your text book, there are a number of great articals you can learn from in the "for your interest" section
Most of the people you will find here, Teach hvac, have taught , are busniess owners and very sharp techs so you cant get over on them
the sequence of the operation of a furnace or an ac should be easy to find on the net
WHAT IS THE SEQUENCE OF A FURNACE AND WHAT IS THE SEQUENCE OF A/C FROM THE THERMOSTAT TO THE CONDITIONED SPACE? THIS IS A SPLIT SYSTEM
thermostat gets cold, yells down to POS furnace yo i need heat, furnaces runs, thermostat gets hot, yells down to POS furnace ok wise arse shut off.
Can you figure out the a/c sequence of operation now.
Really, the answer should be in your text book, study it. You need to ask your instructor these kind of questions, so he has a better idea of your progress, and can help you better understand what your reading.
Don't expect us to do your home work for you!
We will always help those willing to learn and help themselves.
But you won't learn if you don't try yourself first.
student: please do not shout online (= don't use all caps!)
student problem: the furnace is a system comprised of several devices, some of which may be repeated for more capacity. Now, what is necessary for these devices to work to accomplish the task, SAFELY? In what order?
beenthere: I would back out -- if they do not know space use, you have no basis for design! I would not be able to design for any service (phone/ lighting/HVAC, ) without more info! Hard enuf when they give some numbers. If that does not satisfy, then find out how big is the budget, spend it all -- worse case would be a computer server center having racks of "heaters". If they will close up the chase to never be accessed again, I would RUN to the nearest door, or inquire where would they like another doorway? Even the better house builders are installing chases for changeout/ modifications!
Student's guide to thermostat wiring and sequence of operation:
R = Really, like totally juice me with some serious power, man!
G = Gosh, I'm like, you know, your biggest fan!
Y = Yo! Let's get some serious cooling going, here!
O = Oh man, such a flip flopper
W = Why is it so friggin' hot?
C = Commonly, the same path home
B = Befuddled...sometimes a flip flopper, sometimes the same path home
E = Urgent, urgent...EMERGENCY!
Electricity makes refrigeration happen.
Refrigeration makes the HVAC psychrometric process happen.
HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.
A building is NOT beautiful unless it is also comfortable.