Water Heater Water Heater Brochure
RESIDENTIAL CONDENSING
ANSI Z21.10.3 • CSA 4.3
CONTINUOUS MAXIMUM FLOW RATES UP TO 10.0
GPM
ULTRA-LOW NOX GAS TANKLESS WATER HEATERS
H3 MODELS CAN BE USED IN RESIDENTIAL AND
COMMERCIAL APPLICATIONS
EASY-LINK
TM
UP TO FOUR H3 HEATERS OR UP TO
TWENTY H3 HEATERS WITH MULTI-UNIT
CONTROLLER
Warranty
• 15-year limited warranty on heat exchanger in residential
applications
• 5-year limited warranty on heat exchanger in commercial
applications
• 5-year warranty on all parts
• Refer to takagi.com for further warranty details
Features
Temperature Settings
120°F (Default Setting)
H3J/H3S: 100-140°F (5°F Increments)
H3: 100-160°F (5°F Increments)
Electric 120 V 60 Hz 1.5 Amps
540H only
Specifications
Model Number* Type
Gas Consumption Input** Inlet Gas Pressure**
UEF
Minimum (BTU/H) Maximum (BTU/H) Minimum (in. W.C.) Maximum (in. W.C.)
T-H3-DV Natural 15,000 199,000 4.0 10.5 0.93
T-H3-OS Natural 15,000 199,000 4.0 10.5 0.95
T-H3S-DV-N Natural 15,000 180,000 4.0 10.5 0.95
T-H3S-OS-N Natural 15,000 180,000 4.0 10.5 0.94
T-H3J-DV-N Natural 15,000 160,000 4.0 10.5 0.94
T-H3J-OS-N Natural 15,000 160,000 4.0 10.5 0.95
Model Number* Maximum GPM Hot/Cold Connections Gas Connection
Approx Shipping
Weight (lbs)
T-H3-DV 10 3/4" NPT 3/4" NPT 71
T-H3-OS 10 3/4" NPT 3/4" NPT 69
T-H3S-DV-N 8 3/4" NPT 3/4" NPT 71
T-H3S-OS-N 8 3/4" NPT 3/4" NPT 69
T-H3J-DV-N 6.6 3/4" NPT 3/4" NPT 71
T-H3J-OS-N 6.6 3/4" NPT 3/4" NPT 69
*For propane models, change “N” to “P”
**For propane models, minimum fire rate is 13,000 BTU/H, minimum inlet gas pressure is 8.0 in. W.C. and maximum inlet gas pressure is 14.0 in. W.C.
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