Brochure

540P SERIES
Specifications
The 540P Series integrates a recirculation pump to provide instant hot water
in residential applications with dedicated recirculation lines. The pump is easily
controlled with a simple user interface and multiple pump settings allow you to
customize pump operation to meet your needs while maximizing heater efciency.
Indoor models have an integrated temperature and pump controller and outdoor
models include a remote control as a standard feature.
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-540P-N Natural 15,000 199,000 4.0 10.5 0.93
ATO-540P-N Natural 15,000 199,000 4.0 10.5 0.95
*For propane models, change “N” to “P”
**For propane models, minimum fire is 13,000 BTU/H, 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
CONDENSING
Model Number*
Maximum
GPM
Hot/Cold
Connections
Gas
Connection
Clearances (in.)
Approx
Shipping
Weight (lbs)
Top Bottom Side Front
ATI-540P-N 10 3/4" NPT 3/4" NPT 12 12 3 4 71
ATO-540P-N 10 3/4" NPT 3/4" NPT 36 12 3 24 70
540P
Temperature
Settings
Built In / without remote 120°F (default) 140°F
With 100276687 remote (max. distance 400’ from heater, non-polarized 20 gauge wiring.)
100°F to 140°F with 5°F intervals (9 options), 120°F Default Factory Setting
Electric 120 V 1.09 W / 1.34 A (Operation) 5 W / 0.1 A (Standby) 192 W / 1.6 A (Freeze-Protection)
ATI-540P-N ATO-540P-N
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