Takagi AT-K5U-OS User Manual

4 Page
Model
110U
Indoor
(AT-KJr3U-
IN)
110U
Outdoor
(AT-KJr3U-
OS)
310U
Indoor
(AT-K5U-
IN)
310U
Outdoor
(AT-K5U-
OS)
510U
Indoor
(AT-D3U-
IN)
510U
Outdoor
(AT-D3U-
OS)
Natural Gas Input
(Operating Range)
BTU/h
Min.: 15,000
Max.: 140,000
Min.: 15,000
Max.: 190,000
Min.: 15,000
Max.: 199,000
Gas Connection 3/4" NPT
Water Connections 3/4" NPT
Water Pressure*
psi
(Mpa)
15 - 150 (0.1 - 1)
Natural gas
Inlet Pressure
" W.C.
(kPa)
Min. 4.0 (1.00)
Max. 10.5 (2.61)
Weight lbs. (kg) 37.5 (17.0) 39.7 (18.0)
Dimensions
Indoor
H 20.5 x W 13.8 x D 9.1 (Inch)
H 520 x W 351 x D 231 (mm)
Outdoor
H 20.5 x W 13.8 x D 8.5 (Inch)
H 520 x W 351 x D 216 (mm)
Ignition Electric Ignition
Electric
Supply VAC / Hz 120 / 60
Consumption
Operation W / A 54 / 0.64 79 / 0.99 82 / 1.02
Standby W / A 2 / 0.06 2 / 0.06 3 / 0.07
Freeze-
Protection
W / A 96 / 0.82 96 / 0.82 97 / 0.82
SPECIFICATIONS
*Maximum flow may need water pressure equal to or above 40 psi.
NOTE:
 
 The manufacturer reserves the right to discontinue, or change at any time, specifications or designs
without notice and without incurring obligations.
Specicaons
Installaon Manual

Takagi AT-K5U-OS Specifications

General

Brand	Takagi
Model	AT-K5U-OS
Category	Water Heater
Language	English