After physically removing any visible debris from the ac drain or drain pipe opening the most likely way the technician will clear the clogged drain is using suction from a shop vacuum or wet vac.
Rooftop water drain pipe.
Inner roof drains inner roof drains are used on flat roofs and include a low section or channel that collects water and feeds it into a concealed drain that leads to an underground.
A scupper may drain into a downspout on the exterior of the building or it may have an extended chute or pipe that directs a stream of water away from the building.
This water gets refreshed whenever more water runs through it.
At any given moment especially during humid weather you should see water dripping from it.
The vent stack is the pipe leading to the main roof vent.
Run the pipe brush down the drain after unscrewing the cap.
Walk outside your home and look at the condensate drain line.
A drainpipe attached to the p trap goes into an opening in the wall.
Keep pushing the brush till the clog and the stagnated water flushes down out of the outlet pipe.
This drain pipe deposits the excess condensed water outside on the ground.
Alternatively they might use a garden hose or plumbers snake to remove the clog.
Pipe brush is a long brush which is designed for cleaning out the drain in the roof from top.
According to the chart for 1 8 slope per 12 of pipe for 5 000 square feet of roof area with a 6 per hour of rainfall the required pipe size is 8.
Ferguson is the 1 us plumbing supply company and a top distributor of hvac parts waterworks supplies and mro products.
Rain water that runs down a plumbing vent pipe at the roof goes into the house drain system at a point past the traps at the plumbing fixtures that keep sewer gas out of the home and heads harmlessly out to the sewer or septic tank.
Now if you don t see the drain line dripping chances are it s not draining.
It also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water runs through the plumbing vent pipe.
To size the vertical roof drain for the same parameters 5 000 square feet of room area and 6 per hour of rain consult table 1106 2 figure 3.
It is a very simple process.
That s the drain line in action.
Step 3 unclog the drain line.
Shop for roof drains at ferguson.
Vents allow sewer gases to escape and allow air.
The waste lines in your house are connected to a venting system that performs two important functions.
It is a vertical pipe attached to a drain line and runs through the roof of your home.