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A. O.SMITH’S
INNOVATION ON DEMAND
A. O. Smith’s complete line of tankless gas water heaters
A Variety of Sleek, Compact Indoor Models To Choose From
All Models Available
In Both Natural Gas
And Propane Designs
305 and 505 705
Dimension Description inches (mm) inches (mm)
A Width 14 (355.6) 18.5 (470)
B Depth 9.6 (244.5) 9.3 (230.5)
C Height - Unit 22.9 (582) 23.6 (600)
D Height - with brackets 25.5 (648.2) 25.2 (640)
E Hot Water Outlet - from wall* 3.6 (91) 4.5 (115)
F Hot Water Outlet - from center 4.3 (110) 2.4 (61)
G Cold Water Inlet - from wall* 2.8 (70) 3.9 (99)
H Cold Water Inlet - from center 1.1 (27) 2.0 (52)
I Gas Connection - from wall* 4.3 (109) 2.4 (61.2)
J Gas Connection - from center 3.5 (89) 4.3 (110)
From base to gas connection 1.6 (40) 1.6 (40)
K From base to cold connection 2.0 (50) 2.0 (50)
From base to hot connection 1.6 (41) 1.6 (41)
* This is the minimum dimension from the wall. The wall bracket is adjustable to allow an additional
1.57 inches (40mm).
Model Dimensions
ATI-305-N (Natural Gas), ATI-305-P (Propane)
ATI-505-N (Natural Gas), ATI-505-P (Propane)
305 and 505 Models
ATI-705-N (Natural Gas), ATI-705-P (Propane)
ATI-705A-N (Natural Gas), ATI-705A-P (Propane) Commercial
705 Model