Water Heater Water Heater Brochure
Multi-UNIT* Up to 20 units Up to 20 units Up to 10 units
Maximum input (BTU/h) 3,980,000 3,980,000 3,800,000
Takagi tankless water heaters have the capability to link multiple heaters together to act as a system. The primary heater is
rotated to ensure even operation of all heaters. The D2,510U/C, H3, CT-199, and M50 series models can Easy-Link up to
four units using included communication cables.
For even larger applications the 510U (series 200), 510C, H3, CT-199, and M50 series models also feature the Multi-Unit
System, allowing a greater number of units to work together as an integrated system using a Multi-Unit System Controller. The
Multi-Unit System can control up to twenty 510U (series 200), 510C, H3, and CT-199 or up to ten M50 heaters.
Unit Comparison
Common Venting
The Takagi common venting system utilizes fewer unique
components so you can design your venting based on
project requirements.
• More design flexibility
• Fewer wall penetrations
• Able to use schedule 40 PVC on intake
and exhaust
• Heaters don’t de-rate when common vented
• Design doesn’t override redundancy benefits
MULTI-UNITS SYSTEMS
*Requires Multi-Unit Controller: 100112691
510U/C Series H3/CT-199 Series M50 Series
EASY-LINK
TM
(No Controller Necessary) Up to 4 units Up to 4 units Up to 4 units
Maximum input (BTU/h) 796,000 796,000 1,520,000
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