Bosch t9800seo-cl Tankless Water Heater 160000 Btu/h Outdoor

Product Description

The BOSCH t9800seo-cl is a condensing gas tankless water heater from the Greentherm series, rated at up to 160,000 BTU/h input and designed for outdoor installation. It delivers a Uniform Energy Factor (UEF) of .95, reflecting high thermal efficiency from a condensing heat exchanger. The unit accepts both natural gas and liquid propane, making it adaptable to a wide range of residential and light-commercial job sites. A colored touchscreen HMI with clear text readout gives the installer and end user direct control without guesswork. Auto-calibration reduces commissioning time on installation day.

This unit is sized for outdoor-only installations where direct-vent wall penetrations are not required. Top water connections allow a straightforward upgrade path from a traditional tank water heater without rerouting existing supply and hot-outlet piping. Wi-Fi compatibility supports remote monitoring and diagnostics for service technicians. The hot water delivery range of 0.45 to 9 GPM at a 35 degrees F temperature rise suits medium to large residential applications or small commercial settings where simultaneous fixture demand is a factor. Plumbing contractors and licensed water heater technicians are the primary installers.

Key Features

• 160,000 BTU/h maximum input with 9,000 BTU/h minimum for precise modulation across varying load demands
• UEF of .95 qualifies this unit as a condensing-efficiency appliance
• Accepts natural gas or liquid propane with field conversion capability
• Top water connections designed for direct replacement of standard tank water heaters
• Colored touchscreen HMI with touch buttons for on-unit adjustments and diagnostics
• Wi-Fi compatible for remote access and service monitoring
• Auto-calibration simplifies setup and startup

Compatibility

Designed as an OEM outdoor condensing tankless water heater replacement or new installation for residential and light-commercial systems requiring natural gas or liquid propane input up to 160,000 BTU/h.

Installation Notes

Installation must be performed by a licensed plumber or qualified water heater technician in accordance with local plumbing codes and the manufacturer instructions. Shut off the gas supply and cold water inlet before beginning any connection work. Outdoor units require proper clearance from walls, combustibles, and air-intake obstructions as specified in local mechanical codes. Gas line sizing must be verified to supply adequate pressure and volume at the inlet to support the full 160,000 BTU/h input rate.

Technical Specifications

• Application: Outdoor
• Gas Type: NG/LP
• Maximum Input: 160,000 BTU/h
• Minimum Input: 9,000 BTU/h
• Hot Water Capacity at 35 degrees F Rise: 0.45 to 9 GPM
• UEF: .95
• Height: 31.5 inches
• Width: 18.5 inches
• Depth: 9.8 inches
• Weight: 71 pounds

Standard Information

• Brand: BOSCH
• Manufacturer Part Number: t9800seo-cl