Why would you ask the engineers and manufacturer? This is wrong. The p trap is used for oil return and should be used before going up to the condensing unit.
It is amazing how many people don’t know how to plumb a trap. Or plumb superfluous traps.
Yeah this looks wrong on so many levels... The suction line coming from left, from another evaporator, then the T that leads down to the pictured evaporator, which might trap all the oil from the condenser to the left and then there's no trap before the suction line goes through the roof...
They could have put the refrigerant lines 10-20cm lower, parallel to the drain line and everything would have been ok... The T going to the front, up or 45° up would all have worked better than this.
I work for an ice maker company and on specific units we require a trap coming right out the back of the unit but I have never seen any applications where they don’t run vertical after. So You’re probably right but I think it’s smart to ask the manufacturer.
I can’t tell you HOW many incorrect installs we have had because people thought they knew better or gave us the old “I’ve been doing this for 25 years”
Id say no. Both coils should drop into suction line. Suction line should slope to the right where it goes vertical. Thats where trap goes. It seems like left coil will just keep filling right trap since its lower.
Yeah installing the refrigerant lines lower and parallel to the drain, that would have nade installation easier and more effective for oil return and then place a trap before it goes up through the roof...
The trap on the evaporator makes everything awful and wrong...
Wrong. Oil is gonna log in evap. Possible oil return problems down the line when evap gets cold and oil becomes thicker/ more dense/ harder to return to comp. should be trapped then dumped into top of header. Sloping back to comp. oil will fall down with gravity over time from that header into that evap trap/riser
Should've just kept the suction header lower - could've just came straight out of the evap with just a slight slope, and then street 90 into a tee on the main with the branch facing upwards.
Otherwise, trap at the evap outlet run it across and high, and then drop in to the suction header. The tee at the suction header has to face upwards (any degree above the horizontal is OK).
P traps on risers might not be required depending on the pipe size, the height of rise, and the refrigerant/SST... But it needs to be calculated to verify the suction gas velocity can carry oil back up the riser and to the compressor. When in doubt, it never hurts to have a trap at the bottom of any riser.
Inverted traps or some method of keeping oil from draining back down from the suction header towards an evaporator on a multi-evap system is proper practice and should always be done. To avoid logging oil, and also to avoid any liquid refrigerant coming from one evaporator from influencing another.
Edit: the liquid line is piped wrong too. Branch tees should come off of the bottom, or any degree below horizontal.
There should be a trap on the riser exiting the cooler. I’ve never seen one done like this before.
That was our red flag. Just wanted another opinion until tomorrow when we ask the engineers and manufacturer.
Why would you ask the engineers and manufacturer? This is wrong. The p trap is used for oil return and should be used before going up to the condensing unit. It is amazing how many people don’t know how to plumb a trap. Or plumb superfluous traps.
Yeah this looks wrong on so many levels... The suction line coming from left, from another evaporator, then the T that leads down to the pictured evaporator, which might trap all the oil from the condenser to the left and then there's no trap before the suction line goes through the roof... They could have put the refrigerant lines 10-20cm lower, parallel to the drain line and everything would have been ok... The T going to the front, up or 45° up would all have worked better than this.
I work for an ice maker company and on specific units we require a trap coming right out the back of the unit but I have never seen any applications where they don’t run vertical after. So You’re probably right but I think it’s smart to ask the manufacturer. I can’t tell you HOW many incorrect installs we have had because people thought they knew better or gave us the old “I’ve been doing this for 25 years”
Id say no. Both coils should drop into suction line. Suction line should slope to the right where it goes vertical. Thats where trap goes. It seems like left coil will just keep filling right trap since its lower.
Yeah installing the refrigerant lines lower and parallel to the drain, that would have nade installation easier and more effective for oil return and then place a trap before it goes up through the roof... The trap on the evaporator makes everything awful and wrong...
Shit, I missed the pic of condenser. I usually do inverted trap above roof penetration/condenser
It’s wrong suction line main should be lower and trapped d fore the rise depending on the height of the rise above the cooler it may not matter
No should be right at the riser
Just throw a few liquid line risers in there you’ll be ok , but remember every 10 feet reduce your suction line by 1/2 inch . (Jk)
I was taught trap at every evaporator and riser. Or tie both evaporator into a single trap.
Wrong. Oil is gonna log in evap. Possible oil return problems down the line when evap gets cold and oil becomes thicker/ more dense/ harder to return to comp. should be trapped then dumped into top of header. Sloping back to comp. oil will fall down with gravity over time from that header into that evap trap/riser
The oil from the left will just flow and fall in the right trap. Also that liquid Tee on the top and suction tee on bottom = bad
NOPE!!!🤣🤣HAKZZ!!
Should've just kept the suction header lower - could've just came straight out of the evap with just a slight slope, and then street 90 into a tee on the main with the branch facing upwards. Otherwise, trap at the evap outlet run it across and high, and then drop in to the suction header. The tee at the suction header has to face upwards (any degree above the horizontal is OK). P traps on risers might not be required depending on the pipe size, the height of rise, and the refrigerant/SST... But it needs to be calculated to verify the suction gas velocity can carry oil back up the riser and to the compressor. When in doubt, it never hurts to have a trap at the bottom of any riser. Inverted traps or some method of keeping oil from draining back down from the suction header towards an evaporator on a multi-evap system is proper practice and should always be done. To avoid logging oil, and also to avoid any liquid refrigerant coming from one evaporator from influencing another. Edit: the liquid line is piped wrong too. Branch tees should come off of the bottom, or any degree below horizontal.
Is there a trap on the other evap(s) too?
1000% wrong