Condensate Drain Pump Installation

Condensate switches imc 307 2 3 states that all hvac equipment that produces condensate must have either a secondary drain line or a condensate overflow switch a secondary drain pan with a secondary drain line or condensate switch or some combination of these installations should be used to prevent overflow if the primary drain line blocks.

Condensate drain pump installation.

Locate the drain where the condensate will be sent. Before installing the pump let the air conditioner run a few cycles so that some condensate collects and to remove any oils that are left in the system. Figure 3 connection of a condensate pump typical method nb manufacturer s detailed instructions should be followed. The float switch and the reservoir make up a condensate pump.

Install pvc pipe from the drain back to near the furnace. The problem could be just algae buildup in the pump s check valve. Stop the pvc pipe above the furnace for now until the condensate pump is installed. Mini split condensate pump selection and installation is critical for providing indoor air comfort and avoiding property damage from evaporator drain pan overflows.

2 make sure that all of the packaging is removed from the pump and that all venting slots are clear from debris. For the primary condensate drain the installer piped 3 4 pvc into a condensate pump which will discharge into a nearby vanity sink prior to the trap via 3 8 vinyl plastic tubing. Anchor the pipe to the ceiling or wall depending on how it is run. So furnace installers mount a condensate pump right on the furnace and route the drain line to a far off sink or floor drain.

Once the condensate reaches a specific level the condensate pump is turned on by the built in float switch. For the secondary drain system he installed a wet switch within the pan below the unit which will turn the unit off upon water detection. Ensure all pvc joints are cleaned and glued properly so they do not leak. If that condenser pump fails the water overflows the pump and spills onto the floor.

That doesn t necessarily mean the pump is bad. The reservoir is connected to the drain pan where it collects water while your mini split unit cools.