Brochure

310U SERIES
Specifications
The 310U features a max ow rate of 8.0 gpm providing enough hot water to run
three showers at the same time. Indoor models include an integrated temperature
controller. A remote control is included as a standard for outdoor models. Complies
with SCAQMD Rule 1146.2 and other air quality management districts with similar
NOx Emission requirements of 14 ng/J or 20 PPM.
Model Number* Type
Gas Consumption Input Inlet Gas Pressure**
UEF
Minimum
(BTU/H)
Maximum
(BTU/H)
Minimum
(in. W.C.)
Maximum
(in. W.C.)
ATI-310U Natural 15,000 190,000 4.0 10.5 0.82
ATO-310U Natural 15,000 190,000 4.0 10.5 0.82
Model Number*
Maximum
GPM
Hot/Cold
Connections
Gas
Connection
Clearances (in.)
Approx
Shipping
Weight (lbs)
Top Bottom Side Front
ATI-310U 8 3/4" NPT 3/4” NPT 12 12 3 4 39
ATO-310U 8 3/4" NPT 3/4” NPT 36 12 3 24 39
*Units are field convertible from natural gas to propane with supplied conversion kit.
**For propane, minimum inlet gas pressure is 8.0 in. W.C. and maximum inlet gas pressure is 14.0 in. W.C.
ANSI Z21.10.3 • CSA 4.3
NON-CONDENSING
310U
Temperature
Settings
Dipswitches 120°F (default) 140°F
With 100209924 remote (max. distance 400’ from heater, non-polarized 20 gauge wiring.)
100°F to 140°F (9 options), 120°F Default Factory Setting
Electric 120 V 79 W / 0.99 A (Operation) 2 W / 0.06 A (Standby) 96 W / 0.82 A (Freeze-Protection)
ATO-310UATI-310U
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