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[pointer80]

Hello,  I have a workshop that has concrete block walls and need some advice on running my water lines.  Right now I am in the process of insulating the block walls and I have a hanging heat unit mounted in the middle of the shop.  My water lines(1" plastic pex tubing) come in on the bottom of one wall.  and run to the hanging unit.  My question is how does everybody else have there similar system set up or how would you run this set up.  Thanks in advance. 

[slimjim]

If it is possible, try to hide your lines in an insulated chase, use an aqua stat on the supply at the heater to switch the fan on when the water temp is up and control the water flow with the circ attached to a relay and thermostat or  use a line voltage thermostat with no need for a relay.

[mlappin]

One other thing I did, I have three heat exchangers and I placed them all on the floor, heat rises anyways and all the lovers on the heat exchangers are aimed down slightly.

One is under a old refrigerator I keep all the welding supplies in right by the welding bench, another is under a storage cabinet aimed to direct warm air to the drill presses, lathe and Bridgeport and the other is in another corner of the shop blowing towards the open area. When I get my hands on another old furnace I’m going to build one last HX on casters so I can aim it directly where we are working on something, and hopefully aim the warm air under a pickup or straight truck.

[pointer80]

Thank you guy's for the info.  slimjim,  When you refer to a insulated chase are you talking about building a insulated "cavity" to run the lines in along the wall?  If so that's what I had in mind.  I will have to run 4 sets of elbows(4 in the supply and same in the return).  Is that going to be ok?  What I have now on my hanging heat exchanger is a thermostat on the wall and a rheostat(?) switch to turn the fan motor up or down.  Could you send me more info on the set up your talking about.  Thanks a bunch.

[LittleJohn]

It is best to minimize elbow fittings, with PEX; its better to use bend supports on the pipe (but not always possible)

Good LUCK Pointer

[pointer80]

LittleJohn,  What are bend supports?  If I have no choice but to run elbows what should I do to run them?

[WoodMOJoe]

http://www.supplyhouse.com/PEX-Bend-Supports-719000

[slimjim]

Pointer, PM me your E-Mail and I'll send you a drawing, 4 90's in the loop isn't going to kill the system as long as you are using large enough piping, I would suggest a rigid pex though like pex al pex or Fosta pex by vega as they don't expand or contract and stay where you put them!

[pointer80]

slimjim,  I sent you a pm.  please let me know you received it.  Thank you.

[slimjim]

Got it and responded, looking forward to your E Mail and follow up phone call.