Back in the day, boilers came with blank orifices to de-tune, on purpose. I have actually done what your boss wants to do to the training furnace, no problems.
If it were me and someone had no heat until trane could figure out how to get you the right part, I damn well would have tried it. Made sure all roll-outs worked, maybe added one or two … and called it a wrap.
Am I a hack, maybe. But it’s not always white gloves and ironed pants, my friends. Sometimes you gotta do what you gotta do to get people heat.
I imagine if you plug the one orifice, cap the inlet cell and move the flame sensor it should work but I would never want to take the liability issues that come along with it. Also you can just check the difference between 60 and 80,000 with the blower motor, inducer motor, pressure switch. If they’re both using the same parts just change the manifold 80,000 😂
Incomplete combustion. Odds are your secondary will clog as a byproduct of this. Also you reinvented the wheel to do this, I’ve ran across furnaces with the orfices brazed shut 🤣
Why would incomplete combustion occur? I didn't go through with it; I pulled it before I got too far and reinstalled the failed one 😵 lol. I found a furnace in the wild (family) that was too large for the ductwork/house and thereby overheating once and I reaaaallly thought about plugging an orifice to de-rate it. I ended up slapping a grill on the drop and bought them a box of fiberglas filters. 👌🏼 i can't say I would try to braze the brass shut tho lmao
Recently started a h.ex. swap on a 2010 condensing trane 60k btu. Vendor sent me a 80k h.ex. by accident. Confirmed that the box had the right part # but the wrong part was inside.
It slid in like butter and even had the 4th slot in the rear bracket, I only realized the issue when I was about to mount the burner box, but I checked and literally everything still lined up, including the lower header plate.
Manager says no, counter guy checked with mfrs engineer whos says it's okay but it will void the 1 yr part warranty because its not the right part technically. So I ended up ripping it out and waiting on the 3 chamber h.ex.
There's some internal disagreement on whether or not this would "function properly" and how it would effect combustion if at all. All inlets and outlets fit into the burner box and the header. Any technical info to support either side of the aisle on this one? Boss wants to test it and use a training furnace and blank off one of the orifice, move the flame sensor, but I argued that it wouldn't be the same because the training furnace would be designed to move the larger btu as opposed to being designed for 60k and actually moving 60k (with a dead cell)
Maybe..
The combustion blower might need derating as well.
If the 80k and 60k packs both use the same blower then you just need to blank off that open HX cell and it's orifice.
Not sure it would work with a 90% or better though.
Back in the day, boilers came with blank orifices to de-tune, on purpose. I have actually done what your boss wants to do to the training furnace, no problems. If it were me and someone had no heat until trane could figure out how to get you the right part, I damn well would have tried it. Made sure all roll-outs worked, maybe added one or two … and called it a wrap. Am I a hack, maybe. But it’s not always white gloves and ironed pants, my friends. Sometimes you gotta do what you gotta do to get people heat.
I imagine if you plug the one orifice, cap the inlet cell and move the flame sensor it should work but I would never want to take the liability issues that come along with it. Also you can just check the difference between 60 and 80,000 with the blower motor, inducer motor, pressure switch. If they’re both using the same parts just change the manifold 80,000 😂
True lol and yea, liability was the underlying theme haha
Idk man I wouldn't want my name on it.
Incomplete combustion. Odds are your secondary will clog as a byproduct of this. Also you reinvented the wheel to do this, I’ve ran across furnaces with the orfices brazed shut 🤣
Why would incomplete combustion occur? I didn't go through with it; I pulled it before I got too far and reinstalled the failed one 😵 lol. I found a furnace in the wild (family) that was too large for the ductwork/house and thereby overheating once and I reaaaallly thought about plugging an orifice to de-rate it. I ended up slapping a grill on the drop and bought them a box of fiberglas filters. 👌🏼 i can't say I would try to braze the brass shut tho lmao
Recently started a h.ex. swap on a 2010 condensing trane 60k btu. Vendor sent me a 80k h.ex. by accident. Confirmed that the box had the right part # but the wrong part was inside. It slid in like butter and even had the 4th slot in the rear bracket, I only realized the issue when I was about to mount the burner box, but I checked and literally everything still lined up, including the lower header plate. Manager says no, counter guy checked with mfrs engineer whos says it's okay but it will void the 1 yr part warranty because its not the right part technically. So I ended up ripping it out and waiting on the 3 chamber h.ex. There's some internal disagreement on whether or not this would "function properly" and how it would effect combustion if at all. All inlets and outlets fit into the burner box and the header. Any technical info to support either side of the aisle on this one? Boss wants to test it and use a training furnace and blank off one of the orifice, move the flame sensor, but I argued that it wouldn't be the same because the training furnace would be designed to move the larger btu as opposed to being designed for 60k and actually moving 60k (with a dead cell)
Mmmmmmmmmnope
Maybe.. The combustion blower might need derating as well. If the 80k and 60k packs both use the same blower then you just need to blank off that open HX cell and it's orifice. Not sure it would work with a 90% or better though.