What is code for AC drain line?

Author: Miss Evangeline Green I  |  Last update: Wednesday, September 10, 2025

307.2. 2 Drain pipe materials and sizes. Components of the condensate disposal system shall be ABS, cast iron, copper and copper alloy, CPVC, cross-linked polyethylene, galvanized steel, PE-RT, polyethylene, polypropylene, PVC or PVDF pipe or tubing.

What are the rules for condensate drain lines?

Condensate drains shall not directly connect to any plumbing drain, waste or vent pipe. Condensate drains shall not discharge into a plumbing fixture other than a floor sink, floor drain, trench drain, mop sink, hub drain, standpipe, utility sink or laundry sink.

What is the code requirement for a condensate drain?

The IMC dictates a 1% minimum pitch of the drain, equal to 1/8″ fall for every 12″ (foot) of horizontal run. In practice, it is safer to use 1/4″ of fall per foot to ensure proper drainage and provide some wiggle room for error.

What is the code M1411?

M1411.

Drain piping shall be not less than 3/4-inch (19 mm) nominal pipe size. One of the following methods shall be used: 1.An auxiliary drain pan with a separate drain shall be installed under the coils on which condensation will occur.

Where should an AC condensate line drain to?

Condensate lines should terminate in a location that allows for safe and effective drainage. This can include outdoor areas, a nearby floor drain, or a dedicated drain connected indirectly to your plumbing system to prevent contamination.

The Facts About AC Condensate Drain Lines

Should my exterior AC drain pipe be dripping water?

Remember, while some maintenance tasks can be done yourself, others should be left to professionals. In conclusion, it's normal for your AC to drip water outside as it's a byproduct of the cooling and dehumidification process. However, if the unit leaking water is excessive or unusual, this could indicate a problem.

Where should a condensate pipe drain to?

Where an installer is fitting a new or replacement boiler, the condensate discharge pipe should be connected to an internal “gravity discharge point” such as an internal soil stack (preferred method), internal kitchen or bathroom waste pipe such as sink, basin, bath or shower waste.

What is the code po1411?

Dodge P1411 Code: Engine Misfire, Vibration & Random Sounds.

What is trouble code B1340?

Here is the code: B1340 COMMUNICATION ERROR OF AC BUS WITH COMPONENT B32/2.

What is the code P0333?

The P0333 code stands for “Knock Sensor 2 Circuit High Input (Bank 2),” which typically means the powertrain control module (PCM) didn't receive a signal from the knock sensor. The common causes of the P0333 code are knock sensor failure, wiring issues, and a faulty PCM.

Can AC condensate drain to the ground?

The most popular areas we terminate condensate drain lines to is the side of the house and usually about six inches from the ground. And this can be in a planted area that is large enough to accept the amount of drainage, and soak down into the earth.

How far should a condensate line be from a house?

Air Conditioning System FAQs

How far from the foundation does the air conditioning condensate drain line have to be? The drain line must extend a minimum of 12" away from the foundation to prevent excess moisture from accumulating at the foundation.

What is the minimum size for a condensate drain line?

Condensate waste and drain line size shall be not less than 3/4-inch (19 mm) nominal diameter from the drain pan connection to the place of condensate disposal.

What is the code for condensate discharge?

307.2. 1.1 (IPC [M] 314.2. 1.1) Condensate Discharge.

What is the pitch of the AC condensate drain line?

Condensate from cooling coils and evaporators shall be conveyed from the drain pan outlet to an approved place of disposal. Such piping shall maintain a minimum horizontal slope in the direction of discharge of not less than 1/8 unit vertical in 12 units horizontal (1-percent slope).

Can pex be used for condensate drain?

Condensate byproducts can be corrosive to some materials including carbon steel pipes, brass drain grilles, reinforced concrete, and some plastics. For this reason, PVC, CPVC or PEX used for condensate drain piping must meet the appropriate ASTM/CSA specifications.

What is trouble code P1361?

The P1361 code indicates that the ignition control module has failed with a low voltage. When the powertrain control module (PCM) detects an abnormally low voltage in the control circuit of the ignition control module (ICM), it triggers this code.

What is the code B1342?

The B1342 OBD code most often refers to a configuration error in the Engine Control Module (ECU). The ECU is in control of vehicle systems like the anti-lock braking system (ABS), airbags, ignition, and electronic power steering, just to name a few.

What is trouble code C1233?

The C1233 is a fairly straight forward code pointing to a problem with the driver's side front Wheel Speed Sensor (aka "ABS Sensor"). The sensor is mounted to the rear of the front wheel assembly, behind the brake system. Inspect the electrical connector and wire harness for any loose, broken or damaged wires.

What is the code P242A?

The trouble code P242A can be explained as Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3. This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model.

What is the reason code co222?

In conclusion, the CO 22 denial code is used when a service is deemed "not a covered benefit" under a patient's insurance plan. Understanding medical billing codes and the implications of denial codes is essential for healthcare providers to ensure proper reimbursement and financial stability.

What is trouble code po017?

Diagnostic trouble code (DTC) P0017 stands for “Camshaft Position B – Camshaft Position Correlation (Bank 1)”. This code indicates that your car's powertrain control module (PCM) detects a misalignment between the crankshaft and camshaft positions.

What are the rules for condensate drains?

Condensate drains shall not directly connect to any plumbing drain, waste or vent pipe. Con- densate drains shall not discharge into a plumbing fixture other than a floor sink, floor drain, trench drain, mop sink, hub drain, standpipe, util- ity sink or laundry sink.

How do you fix a condensate drain line?

Different Ways to Unclog Drain Lines in Your AC
  1. Plunger Method. ...
  2. Use a Wet/Dry Vacuum. ...
  3. Pour One Cup of Vinegar Down the Drain Line. ...
  4. Pour One Cup of Bleach Down the Drain Line. ...
  5. Blow Air Through the Line. ...
  6. Flush Clean Water Through It. ...
  7. Use Chemical Drain Cleaners. ...
  8. Use an Electric Snake.

Where should my AC drain line be?

In new homes, city codes require drain lines from the air conditioner's condensate line which are often located in the attic to tie in or be plumbed to the home's plumbing system. Typically, those 3/4″ pipes are plumbed into a bathroom sink's drain that is on average 1-1/4″ or 1-1/2″ in diameter.

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