AHU Secondary Drain Pan Pumps

Critical safety backup to prevent water damage.
Secondary drain pan pumps are an essential safety feature for air handling units (AHUs) installed above critical or occupied spaces. They provide an automatic, redundant drainage method if the primary condensate drain becomes blocked. EKG Malaysia supplies and installs reliable, code-compliant secondary drain pan systems to protect ceilings, equipment, and interiors from costly overflow damage.

System Components & Operation:

• Secondary Drain Pan: A larger auxiliary pan installed beneath the AHU to catch overflow from a blocked primary drain.

• Safety Pump Unit: Typically a dedicated, robust condensate pump with an alarm float switch.

• Alarm System: The pump includes a separate float switch that triggers a local audible alarm and/or sends a signal to the BMS before the safety pump activates, alerting staff to a primary drain blockage.

• Independent Discharge: Pumps water to a conspicuous location (e.g., over a floor drain in a plant room) to signal a problem.

Why It’s Non-Negotiable for Many Installations:

• Building Code Requirement: Often mandated by local codes (UBBL) and insurance for AHUs over occupied spaces.

• Property Protection: Prevents catastrophic water damage to ceilings, assets, and building structure.

• Indoor Air Quality (IAQ) Prevention: Stops the growth of mold and mildew from stagnant overflow water.

• System Reliability: Allows time for maintenance before the AHU must be shut down.

Our Supply & Installation Service:

1. Compliance Review: Advising on local code requirements for secondary containment.

2. System Design: Sizing the secondary pan and selecting a pump with adequate capacity and reliable alarm functions.

3. Professional Installation: Correct placement of the pan, pump, and independent alarm discharge line.

4. Integration & Testing: Wiring the alarm to the AHU control panel or BMS and testing the full fail-safe sequence.

Key Considerations:

• Pan Size: Must be large enough to hold condensate until the alarm is acknowledged.

• Pump Reliability: Must operate infrequently but flawlessly when needed.

• Alarm Visibility/Audibility: The alarm must be placed where it will be noticed by building personnel.

Don't rely on a single drain line.
A secondary drain pan pump system is inexpensive insurance against very expensive repairs.

Contact EKG Malaysia to design and install a compliant, reliable secondary drain pan pump system for your AHUs. Protect your building and ensure peace of mind.