Can you combine condensate drains?

The condensate drains for both systems are jointed together. A clog in one line with affect both units and we therefore recommend, as is customary, two independent condensate drains. Service by a licensed HVAC contractor is recommended.”

Why are there two condensate drains?

The main air unit is equipped with two condensate drain outlets: a primary drain for conveying water outside and a secondary drain as a backup, in case the primary becomes blocked or congested.

What is a secondary condensate drain line?

The secondary line is considered a backup line, so that if the primary line gets clogged, the condensate water will then go through the secondary line. The secondary line (usually a PVC pipe) will often end in a highly visible and conspicuous location.

What is a secondary drain?

The secondary drain provides an outlet for the water in case the primary gets plugged up. Since the secondary connection is a backup drain, it is located slightly higher than the primary connection. Sometimes this is done using an internal dam which forces water to go through the primary drain unless it is plugged up.

Is a secondary condensate drain required?

3 A secondary condensate drain system is required not in every installation instance, but in every installation at which “where damage to any building components will occur as a result of overflow from the equipment drain pan or stoppage in the condensate drain piping”.

How long can a condensate pipe be?

3 metres

The external pipe run should be kept as short as possible to a maximum of 3 metres, taking the most direct and “most vertical” route to the discharge point, with no horizontal sections in which condensate might collect.

Where do I run my AC condensate drain line?

Locate the condensate drain access point outside your home or near the indoor air handler enclosure. You should see a small vertical vent extension as part of the piping. The vent is located above the point where the line exits your air handler. Open the plug on top to access the drain lines.

Where is the primary drain on AC unit?

Quote from the video:
Quote from Youtube video: It's attached to the PVC back-air with some clamps. And that just goes directly into your your sink into your lavatory here.

Can AC condensate drain into sewer?

Most condensate drains tie into the home’s sewer line and are equipped with a U-shaped trap to keep sewer gas odors from entering the HVAC system. If you notice a noxious odor coming from the supply vents when the blower is running, a dry drain trap may be the culprit.

Does condensate drain need a trap?

For the most part evaporator condensate traps are required by the manufacturer help to meet the energy efficiency standards as without it air will blow through that hole. If there is a trap tell them tho clean it all the time because it’ll clog and when it does they might call you.

What is a secondary drain pan on an AC unit?

So for these instances, you should have a secondary drain pan, sometimes called a back-up drain pan. This is a large pan that is placed underneath the unit, and should be large enough to cover the length and width of the unit so it can collect any water that isn’t caught by the internal drain pan.

Does a condensate drain need a vent?

no vent. per se, is required on the condensate line itself, unlike sanitary drains, which must be vented to prevent siphonage at the traps and possible collaspe of the sewer pipe due to possible negative pressures created when no vent is present.

Can you run a condensate pipe into a vent pipe?

The reason we don’t connect condensate discharge piping *directly* or hard-piped to a sewer or storm drain (nor directly into a plumbing system vent pipe) is risk of explosive or unsanitary sewer gases being drawn into the building’s HVAC system.

Does every P trap need a vent?

P-traps need vents

1 – They give the sewer gases a place to vent, so they do not build pressure inside your sewer lines.

Does vent go before or after trap?

The simple answer is if your trap from the fixture cannot see the vent then it is installed wrong. We must always keep the vent connection above the trap weir to prevent siphoning and keep proper pressures on both side of the trap.

How far away can a vent be from a trap?

Distance of fixture trap from vent.

Size of Fixture Drain, Inches Distance Trap to Vent
1-1/4 2 ft 6 in
1-1/2 3 ft 6 in
2 5 feet
3 6 feet

Can a vent pipe run horizontal?

Can Vent Pipes be Horizontal? There is no problem with running your vent pipes horizontally as long as you remember that there should be a minimum clearance of 6 inches above the spill line.

How far does the vent have to be from the trap?

P3105. 1 Distance of Trap From Vent

SIZE OF TRAP (inches) SLOPE (inch per foot) DISTANCE FROM TRAP (feet)
11/2 1/4 6
2 1/4 8
3 1/8 12
4 1/8 16

How far can you run a drain without a vent?

If you have 1- 1/4-inch pipe, the horizontal distance of the vent ought to not be more than 30 inches. For a 1- 1/2-inc pipe the vent must be 42 inches away at the most while a 2-inch pipeline must have an optimum distance of 5 feet.

How many drains can share a vent?

A horizontal wet vent could have as few as two fixtures or as many as ten fixtures but not more than two fixtures of any type can be connected to the system. Each wet vented fixture drain shall connect independently to the horizontal wet vent.