ATI-540P Brochure

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AOSRG47107
COMMERCIAL-GRADE
RESIDENTIAL GAS WATER HEATERS
15-150 psi Water Pressure. 40 psi or above recommended for maximum flow.
*Current numbers based on factory testing; 0.5 GPM for activation; 0.4 GPM required for continuous fire after initial ignition.
Indoor models are certified from sea level to 10,100 ft. elevations. Outdoor models are certified from sea level to 6,000 ft. elevation.
Model Number Type
Gas Consumption Input Inlet Gas Pressure
UEF
Maximum
GPM*
Hot/Cold
Connections
Gas
Connection
Dimensions in Inches Approx
Shipping
Weight
(lbs)
Minimum
BTU/H
Maximum
BTU/H
Minimum
in. W.C.
Maximum
in. W.C.
Height Width Depth
Indoor Models
ATI-540P-N Natural 15,000 199,000 4.0 10.5 0.93 10 3/4” NPT 3/4” NPT 23-5/8 17-3/4 11-1/4 71
ATI-540P-P Propane 13,000 199,000 8.0 14.0 0.93 10 3/4” NPT 3/4” NPT 23-5/8 17-3/4 11-1/4 71
Outdoor Models
ATO-540P-N Natural 15,000 199,000 4.0 10.5 0.95 10 3/4” NPT 3/4” NPT 23-5/8 17-3/4 11-1/4 69
ATO-540P-P Propane 13,000 199,000 8.0 14.0 0.95 10 3/4” NPT 3/4” NPT 23-5/8 17-3/4 11-1/4 69
CONDENSING TANKLESS WITH INTEGRATED RECIRCULATION PUMP
540P FLOW RATE vs TEMPERATURE RISE
FLOW RATE (GPM)
TEMPERATURE RISE (°F)