A.O. Smith 305 - Manual

A . O . S M I T H ’ S
I N N O V AT I O N O N D E M A N D
A. O. Smith’s complete line of tankless gas water heaters
An Array of High Performance Outdoor Models To Choose From
All Models Available
In Both Natural Gas
And Propane Designs
305 505 705
Dimension Description inches (mm) inches (mm) inches (mm)
A Width 14 (355.6) 14 (355.6) 18.5 (470)
B Depth 7.7 (196) 9.8 (249.5) 9.3 (230.5)
C Height - Unit 19.8 (503) 22.9 (582) 23.6 (600)
D Height - with brackets 22.5 (571) 25.4 (646.4) 25.2 (640)
E Hot Water Outlet - from wall 3.4 (87) 3.8 (96) 4.5 (115)
F Hot Water Outlet - from center 4.1 (105) 4.3 (110) 2.4 (61)
G Cold Water Inlet - from wall 2.7 (68) 2.6 (75) 3.9 (99)
H Cold Water Inlet - from center 0.4 (10) 1.1 (27) 2.0 (52)
I Gas Connection - from wall 3.0 (77) 4.1 (104) 2.4 (61.2)
J Gas Connection - from center 3.3 (83) 3.5 (89) 4.3 (110)
From base to gas connection 1.6 (40) 1.6 (40) 1.6 (40)
K From base to cold connection 2.0 (50) 2.0 (50) 2.0 (50)
From base to hot connection 1.6 (41) 1.6 (41) 1.6 (41)
Model Dimensions
ATO-305-N (Natural Gas), ATO-305-P (Propane)
ATO-505-N (Natural Gas), ATO-505-P (Propane)
305 and 505 Models
ATO-705-N (Natural Gas), ATO-705-P (Propane)
ATO-705A-N (Natural Gas), ATO-705A-P (Propane) Commercial
705 Model