I was not able to take any pictures of them setting the trap, I was at the edge of the hole at the time guiding it in and making sure it faced the right direction. As you can see there are tee's inside the manhole which are parts of the grease trap, and allow access to clearing the drain lines when needed. We started to fill around the trap with pea gravel. We opted for pea gravel in this case to help fill in any voids around the trap and under the driveway.
Here you see we are setting the adjusting rings so we can get the frame for the manhole cover level with the drive way. Also note we installed a clean out after the trap. When it comes to sewer and drain cleaning you can never have enough clean outs.
Here you can see the clean out we installed between the old trap and the new trap.
Here we loaded the rest of the hole with pea gravel. In this picture we are leveling out the gravel so we can have a 6" pour of concrete. We do have 9" covers for the two clean outs, this way cares can safely drive over them with out any damage to our sewer clean outs.
Here is pictures with the concrete poured in place. Every time I went there to take these pictures of the final job someone had parked their car over it.
I do hope these photos has helped you understand the amount of work involved in installing one of these grease trap units, and hooking up the sewer pipes. This job took 3 full days to get the hole dug to expose the sewer line and make room for the trap. Setting the grease trap and hooking up the sewer pipes. Backfilling the hole and getting the concrete poured.
This was done to upgrade their trap to meet their needs. In the state of Illinois all food Establishments must have a grease trap of the proper size installed. It helps keep the Fats, Oil, and Grease (FOG) out of the sewer systems. FOG can clog not only their sewer and drains, but can clog the city sewers which can cause backups to other people on the block.
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Now you can see the flow rate for these heaters has changed. It means you can run a shower and maybe wash your hands at the same time. What happens when you try to run say the 3 showers as in the first example? Well the heater knows you want to get 120º F water out of it, so it will restrict the flow to ensure you will always get the desired temperature. So when all three showers are running the water will trickle out if you take the 4.8 GPM and divide that by 3 means you will only get 1.6 GPM to each fixture.
Now to solve this problem you can goto the next size larger models, or if your temperature rise and fixture demand is to great for even the larger models you can install multiple units. If you installed two of the units which they link up with each other so they will only fire both units when there is a demand. You would get 9.6 GPM out of a two unit tankless water heater system using the above models.
I do hope this information helps a little in sizing a tankless water heater for your needs. You can always call us at 1-800-924-5758 and ask for us to come out and do a free home or building evaluation and provide a free estimate to install a tankless water heater system for you.
Thank you for taking your time to read this page. Look forward to more pages about plumbing. If you have any type of questions about plumbing and would like to see a page written up about your question go ahead and contact us with the question.