stupid plumbing question what is hot and what is cold

[386kustoms]

so a quick overview i have a 77 minuet 6.0 and when i purchsed ti the po tore out the bathroom for some odd reason. anyway i have the bathroom parts but no copper lines. coming from the road side i have 1 copper pipe 1/2 inch id and 1 copper pipe 3/8 id. so i know one is hot and one is cold but what is what. is the bigger pipe cold. also i realize one pipe will t to the hot side of faucet and the other pipe ts to the cold side of faucet but is it cold or hot water that is suposed to go to the toilet? im sure its cold but b4 i start soldering all this up i want to be 100% sure. and last is the cold on the left side of faucet when looking at it or the right?

so to make it shorter 3 questions

1 is the bigger pipe hot or cold
2 does the toilet get hot or cold
3. is the cold on the left of the faucets or the right?


i know these are pretty stupid questions but i did a quick search and could nto find the answer

[idroba]

1. Trace the lines back to the water heater. Hot water comes out of the top of the water heater, so the pipe that goes to the top is a hot pipe.

2. Toilets always get cold water

3. Hot on the left, cold on the right on all faucets.

[386kustoms]

Originally Posted by idroba

1. Trace the lines back to the water heater. Hot water comes out of the top of the water heater, so the pipe that goes to the top is a hot pipe.

2. Toilets always get cold water

3. Hot on the left, cold on the right on all faucets.

i tried to trace it back but there are so many riveted panels that i cant see around the water heater without drilling the rivets out.

[robert claus]

With an air tank or compressor, and a air nozzle, can you send some low pressure air through the end of the pipe and see where it comes out?

[sandlapper]

Originally Posted by idroba

1. Trace the lines back to the water heater. Hot water comes out of the top of the water heater, so the pipe that goes to the top is a hot pipe.

2. Toilets always get cold water

3. Hot on the left, cold on the right on all faucets.

4. S--t won't run up hill.

[386kustoms]

Originally Posted by robert claus

With an air tank or compressor, and a air nozzle, can you send some low pressure air through the end of the pipe and see where it comes out?

the pipes are all connected everywhere its just the previous owner took the tub/toilet and rear sink out and cut the copper lines. i am just trying to figure what is hot and cold without taking apart the closet area to see the hot water tank

[TG Twinkie]

Locate the water heater. The cold water enters the heater at the bottom. You may be able to trace it to the bath.
You can also go to the galley sink. Open the right hand faucet close the left, blow air thru the faucet, where it comes out is the cold water line.

[danlehosky]

5. Don't bite your fingernails.