Decided id write up how i made my counterflow chiller, sadly i didnt take any pics during the build. So youll have to use your imagination and ask questions.
So to get you going you will need
Parts list
10 metres of 3/4" hose pipe (a nice strong pipe at least 20mm i/d)
10 metres of 10mm copper pipe ( dont be tempted by the cheaper 8mm a fellow forumite used this and blew up his pump)
2 x s/s 1/2" equal tees
2x s/s 1/2" x 19mm hose tails (this final number depends on what i/d outter hose you use)
4x brass 15mm x 10mm straight reducing couplers
2 x brass straight nipple s
2 x tap hose connecters
Ptfe tape both water and gas tap
Jubillee clips.
Cable ties
The build
First of take 2 of your straight reducers, place them in a vice the get a 10mm hss drill bit and slowly drill the shoulder of the internal coupler. This isnt hard and easier than cutting steel hence why the use of brass.
Next on your work bench place your equal tee one of your freshly drilled couplers on the left ( remove both nuts and olives ) and the right the hose tail, the running nipple on the top (if your using c n g fittings you can ignore this). Ptfe the hell of the screw threads and screw them into the tee. Do the same with the other tee.
Now this is a step i missed and wished i hadnt connect your tees to a water supply via the nipple and tap connecter and check for weeps out of the reducer and tail. Once your happy time to move on to the coil.
Roll out your hose and copper coil on a flat surface you will need a 20 metre space, squirt water down your hose as lube. Slide your copper inside the hose it doesnt have to be perfectly straight it will sort its self out later. Once that is done , get a old bit of carpet (your knees will forgive you later ) an old fv and 2 of your mates. First wrap an end under then one you will sit guiding the hose on one will rotate the fv and one will feed the hose over there shoulder and down. Keep going it will get harder. You should get it all on in about 10 minutes my copper pipe slide out as i was going dont worry it will mean less cutting later.
Once its all on stand up the fv and slide it back out , now grab your cable ties and cable tie the stacks together to stop you getting a giant accordion.
Now you want to cut the outter hose so you get about 30cm copper tails on top and bottom. Now get a jubillee clip slide the on the top tail followed by your equal tee assembly. Once your hose tail is in snuggley slide your ten mm olive n nut on and tighten it up, once this is done tighten up the jubillee clip up repeat for bottom
Now your copper tails may be a little long cut them down until your happy once this is done take your remaining unmodified straighters recducers slip them on top and bottom tighten up. Now you can either some 15mm copper scraps and but them on the other end tighten up and slip standard size silicone hose on or put c n g fittings on.
Now get leak testing and get brewing
I really hope this guide helps someone and if you have any questions please ask
Cheers sean
So to get you going you will need
Parts list
10 metres of 3/4" hose pipe (a nice strong pipe at least 20mm i/d)
10 metres of 10mm copper pipe ( dont be tempted by the cheaper 8mm a fellow forumite used this and blew up his pump)
2 x s/s 1/2" equal tees
2x s/s 1/2" x 19mm hose tails (this final number depends on what i/d outter hose you use)
4x brass 15mm x 10mm straight reducing couplers
2 x brass straight nipple s
2 x tap hose connecters
Ptfe tape both water and gas tap
Jubillee clips.
Cable ties
The build
First of take 2 of your straight reducers, place them in a vice the get a 10mm hss drill bit and slowly drill the shoulder of the internal coupler. This isnt hard and easier than cutting steel hence why the use of brass.
Next on your work bench place your equal tee one of your freshly drilled couplers on the left ( remove both nuts and olives ) and the right the hose tail, the running nipple on the top (if your using c n g fittings you can ignore this). Ptfe the hell of the screw threads and screw them into the tee. Do the same with the other tee.
Now this is a step i missed and wished i hadnt connect your tees to a water supply via the nipple and tap connecter and check for weeps out of the reducer and tail. Once your happy time to move on to the coil.
Roll out your hose and copper coil on a flat surface you will need a 20 metre space, squirt water down your hose as lube. Slide your copper inside the hose it doesnt have to be perfectly straight it will sort its self out later. Once that is done , get a old bit of carpet (your knees will forgive you later ) an old fv and 2 of your mates. First wrap an end under then one you will sit guiding the hose on one will rotate the fv and one will feed the hose over there shoulder and down. Keep going it will get harder. You should get it all on in about 10 minutes my copper pipe slide out as i was going dont worry it will mean less cutting later.
Once its all on stand up the fv and slide it back out , now grab your cable ties and cable tie the stacks together to stop you getting a giant accordion.
Now you want to cut the outter hose so you get about 30cm copper tails on top and bottom. Now get a jubillee clip slide the on the top tail followed by your equal tee assembly. Once your hose tail is in snuggley slide your ten mm olive n nut on and tighten it up, once this is done tighten up the jubillee clip up repeat for bottom
Now your copper tails may be a little long cut them down until your happy once this is done take your remaining unmodified straighters recducers slip them on top and bottom tighten up. Now you can either some 15mm copper scraps and but them on the other end tighten up and slip standard size silicone hose on or put c n g fittings on.
Now get leak testing and get brewing
I really hope this guide helps someone and if you have any questions please ask
Cheers sean
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