| Vent Type: | Adapter |
|---|---|
| Diameter (Inches): | 4" |
| Size: | 4" |
| Product Type: | Adapter |

This product adapts Laars, Bosch, Nortec, Takagi, Paloma, Rheem, Modine, Rinnai and Reznor flue outlets. For a VSPH, a 2SVSSLA2 should be used.
Yes, you need those type fittings... with the yellow rubber gasket shown there in your picture. I call this pipe "flue pipe" That gasket is used to prevent condensate (water) in the exhaust stream from leaking out at the pipe joints and dripping in the house. When the water heater is running, there is moisture in the exhaust (flue gas). When the flue gas cools as it goes up the pipe to the outdoors, some of that moisture condenses and turns into water droplets inside the pipe. It travels back down the pipe towards the heater. The gaskets in that pipe keep it inside the pipe and keep it from dripping inside woodwork or out on the floor, whatever the case may be. There is another fitting that they sell that looks like a "tee", but it has a cap on the bottom leg of the tee, with a small nipple poking out downwards. That condensed water is supposed to collect in that tee. You are supposed to connect a rubber hose to that nipple and the water that collects in the leg of the tee will drain down that hose and into wherever you put the hose... a drain or a bucket or whatever. You don't want the moisture to go back inside of the heater.. where it may cause corrosion.... it needs to drain somewhere. All this only comes into play if you have a long run of flue pipe. If it's just a short distance from the heater to the outside, the moisture won't have much chance to condense back into water droplets and cause a problem.
This adapter is 6" in length. It does come with the backflow, but does not include the condensation drain. It will work with many different manufacturers, but unfortunately, it will not work with Eccotemp models.