Welcome, Guest. Please login or register.
Did you miss your activation email?

Username: Password:

Author Topic: Installation of water to air exchanger on cold air return.  (Read 211 times)

Crow

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 309
  • OWF Brand: Portage & Main
  • OWF Model: BL 28-40
  • Eastern Ontario
    • View Profile
Installation of water to air exchanger on cold air return.
« on: October 02, 2020, 09:50:37 AM »

Hey all, been very quiet here so shall see if anyone is around.
Over the he summer I had my oil furnace replaced with propane as it was older unit and insurance provider required tank replaced, so switched it out.
When doing so, added air conditioning as the Mrs works from home and we have zero shade here.
So now the problem at hand. When doing the furnace and AC, the fresh air intake and exhaust for the furnace blocked off the side of the plenum for my exchanger installation, and the AC coil and plumbing blocked off the other side.
I could install the exchanger on the front of the plenum, it's 20x20, but might be tight between the coil and main ducting.
Have read before of installation on the cold air side, which I have lots of room, but am concerned about running that kind of heat through the furnace fan all the time. It is a single speed fan if that matters.
Anyone still here do this with theirs, any  problems?
Logged

Crow

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 309
  • OWF Brand: Portage & Main
  • OWF Model: BL 28-40
  • Eastern Ontario
    • View Profile
Re: Installation of water to air exchanger on cold air return.
« Reply #1 on: October 02, 2020, 10:14:27 AM »

Nevermind, found an old post recommending not to, and furnace parts have only gotten more sensitive I'm sure.
Will make room above the AC coil, and put in union's and valves to remove heat exchanger in summer.
Logged

mlappin

  • Fabricator Extraordinaire
  • Global Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 4111
  • OWF Brand: homebuilt, now HeatmasterSS
  • OWF Model: Martin Steel Works Gen 1 then, now a G200.
  • North Liberty, Indiana
    • View Profile
    • Altheatsolutions
Re: Installation of water to air exchanger on cold air return.
« Reply #2 on: October 03, 2020, 07:32:13 PM »

Nevermind, found an old post recommending not to, and furnace parts have only gotten more sensitive I'm sure.
Will make room above the AC coil, and put in union's and valves to remove heat exchanger in summer.

Or Eldon turned me onto this, you can get a freeze protection control that attaches to the return line out of the A coil or can even just place it on the HX but if it gets below 40F it cycles the compressor off for awhile.
Logged
Stihl 023
Stihl 362
Stihl 460
Sachs Dolmar 112 and 120
Homemade skid steer mounted splitter, 30" throat, 5" cylinder
Wood-Eze model 8100 firewood processor

HeatmasterSS dealer for Northern Indiana

E Yoder

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1264
  • OWF Brand: HeatMaster
  • OWF Model: GS 100
    • View Profile
    • www.heatmasterfurnace.com
Re: Installation of water to air exchanger on cold air return.
« Reply #3 on: October 05, 2020, 02:39:33 AM »

I put them in the return quite often, no issues.
Logged
HeatMaster dealer serving southwest VA.
www.heatmasterfurnace.com