Nu-calgon 4720-12 Condensate Neutralizer 500000 Btu/h

Product Description

The NU-CALGON 4720-12 is a horizontal-mount condensate neutralizer designed to raise the pH of acidic condensate produced by high-efficiency, fuel-fired equipment. Condensate from modulating furnaces, boilers, and tankless water heaters typically falls below a pH of 6.0, making it corrosive to cast-iron drains and municipal sewer systems. This unit handles appliance condensate flow up to 1.9 gallons per hour and is rated for systems up to 500,000 BTU/h. The refillable tank design gives technicians a cost-effective serviceability option, while the included throwaway canister provides an alternative single-use configuration. Licensed HVAC and plumbing contractors are the primary installers.

The 4720-12 is built for residential and light-commercial applications where high-efficiency, fuel-fired equipment generates acidic condensate requiring treatment before drain discharge. Compatible equipment types include condensing boilers, high-efficiency fuel-fired furnaces, and tankless water heaters. The unit mounts horizontally and connects via 3/8-inch female NPT fittings on two inlets, making it straightforward to tie into existing condensate drain lines. The integrated submersible self-priming pump flows up to 74 gallons per hour at free flow and 32 gallons per hour at 20 feet of head, supporting a range of drainage configurations.

Key Features

• Refillable tank design allows media replacement without full unit changeout, reducing long-term service cost
• Throwaway canister included for single-use installations where refilling is not preferred
• Offset female NPT fittings on two inlets simplify condensate line connections
• Integrated 120V AC submersible self-priming pump rated at 74 gph free flow and 32 gph at 20 feet of head
• Horizontal mounting orientation suits typical equipment room layouts
• cETLus Listed to ANSI/UL STD 778 and CAN/CSA STD C22.2 No. 108 for confidence in listed installations
• Media service life of approximately one year when pH drops below 6, with annual treatment frequency recommended

Compatibility

Designed for use with condensing boilers, high-efficiency fuel-fired furnaces, and tankless water heaters generating acidic condensate, with a maximum appliance condensate flow rating of 1.9 gph and a system capacity up to 500,000 BTU/h.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Shut off the appliance and isolate the condensate drain line before making connections. Connections are 3/8-inch female NPT; use appropriate thread sealant rated for acidic condensate service. Verify local plumbing code requirements for condensate discharge, as some jurisdictions require neutralization before drain entry. The pump requires a 120V AC power source; confirm the outlet is properly grounded per NEC guidelines before energizing.

Technical Specifications

• Appliance Capacity: 500,000 BTU/h
• Condensate Flow Rate: 1.9 gph
• Pump Voltage: 120V AC
• Pump Type: Submersible Self-Priming
• Pump Flow Rate: 74 gph free flow; 32 gph at 20 feet of head
• Connection Size: 3/8 inches
• Connection Type: Female NPT
• Number of Inlets: 2
• Container Length: 15.8 inches
• Container Width: 5.3 inches
• Container Height: 7 inches
• Mounting Orientation: Horizontal
• Media Container Type: Tank
• Refillable: Yes
• Media Service Life: 1 year when pH falls below 6
• Treatment Frequency: Annual
• Standards: ANSI/UL STD 778, CAN/CSA STD C22.2 No. 108, cETLus Listed
• Country of Origin: Canada

Standard Information

• Brand: NU-CALGON
• Manufacturer Part Number: 4720-12-01 00:00:00