Author Topic: Condensate Drains - PVC vs CPVC  (Read 1100 times)

Offline Shane

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Condensate Drains - PVC vs CPVC
« on: September 13, 2016, 03:52:15 PM »
Hi guys,

Does anyone know if its code in Ontario to use cpvc for condensate drain pipe or can you just use pvc?

Cheers

Offline Admin

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Condensate Drains - PVC vs CPVC
« Reply #1 on: September 13, 2016, 05:56:08 PM »
Clause 4.2.1 of the B149.1-10 says,

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Clause 4.2.1 - An appliance, accessory, component, equipment, or material used in an installation shall be of a type and rating approved for the specific purpose for which it is employed.

There's nothing in the B149.1-10 that deals with the material used for drain lines.

You should refer to the appliances installation manual.  For example the Lennox EL296 installation manual says,

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Figure 52 shows trap assembly using 1/2” PVC or 3/4” PVC.

I attached a picture below of Figure 52, which lists all the condensation drain line components as PVC.

The Building Code Part 7 deals with drain lines.  It seems to allow ABS, PVC and CPVC.

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7.2.5.12. Plastic Pipe, Fittings and Solvent Cement Used in Buildings
(1) Plastic pipe, fittings and solvent cement used inside or under a building in a sanitary drainage system or venting system shall be certified to,
(a) ASTM F628, “Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe With a Cellular Core”,
(b) CAN/CSA-B181.1, “Acrylonitrile-Butadiene- Styrene (ABS) Drain, Waste, and Vent Pipe and Pipe Fittings”, or
(c) CAN/CSA-B181.2, “Polyvinylchloride (PVC) and Chlorinated Polyvinylchloride (CPVC) Drain, Waste, and Vent Pipe and Pipe Fittings”.
(2) Plastic pipe, fittings and solvent cement used inside a building in a storm drainage system shall be certified to,
(a) ASTM F628, “Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe With a Cellular Core”,
(b) CAN/CSA-B181.1, “Acrylonitrile-Butadiene- Styrene (ABS) Drain, Waste, and Vent Pipe and Pipe Fittings”,
(c) CAN/CSA-B181.2, “Polyvinylchloride (PVC) and Chlorinated Polyvinylchloride (CPVC) Drain, Waste, and Vent Pipe and Pipe Fittings”,
(d) CAN/CSA-B182.1, “Plastic Drain and Sewer Pipe and Pipe Fittings”, or
(e) CAN/CSA-B182.2, “PSM Type Polyvinylchloride (PVC) Sewer Pipe and Fittings”.

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7.4.2. Connections to Drainage Systems

7.4.2.1. Connections to Sanitary Drainage Systems
(d) the following devices shall be indirectly connected to a drainage system:
(vi) a drain or overflow from a water system or a heating system, or
(vii) a drain line from an HVAC system or equipment

I would think that if the drain line serving the house can handle the condensate from a our HVAC equipment, then the same material would work fine as our condensate drain line.  Ultimately I would follow the appliances installation instructions, as that is what the fuel distributor would look for during an inspection.

Offline Porcupinepuffer

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Re: Condensate Drains - PVC vs CPVC
« Reply #2 on: September 14, 2016, 06:26:57 PM »
Carrier clearly states you can use pvc. We've even been told by Carrier we can use vinyl tubing.