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ARGSS00307
CIRCULATING LOOP HEAT EXCHANGERS
The ProMax® XL circulating loop heat exchanger is designed specifically for
installation with A.O. Smith ProMax® SL (Side Loop) gas water heaters.
The combination of a ProMax SL water heater and ProMax XL heat exchanger
provides domestic hot water, and an isolated source of hot water for radiant
floor heating, hydronic air handlers and other closed loop applications.
OUTPUT OPTIONS
■ 28,000 BTU (RXLD-28 and RXLS-28)
■ 52,000 BTU (RXLD-52 and RXLS-52)
COMPACT, EFFICIENT, BRAZED PLATE HEAT EXCHANGER
■ UP TO 60% smaller than traditional shell & tube and coaxial heat exchangers
SINGLE OR DOUBLE-WALL DESIGN
■ Double-wall construction for applications requiring double isolation between fluid streams
AUXILIARY CONNECTIONS EXPAND OPTIONS
■ Plugged connections can be used as installation points for thermowells, a drain or for flushing
heat exchanger
■ Connections located on front of heat exchanger, common to primary side of heat exchanger
115V/60Hz PUMP
■ Control relay (24 volt coil) located inside wiring junction box
PROMAX SL GAS WATER HEATER OPTIONS
■ Standard Vent
■ Direct Vent
■ Power Vent
■ Power Direct-Vent
STANDARDS
■ All components UL Listed
1-YEAR LIMITED WARRANTY
■ For complete information, consult written warranty or contact A.O. Smith Water Heaters
Residential Heating
Revised July 2008
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AOSRG46600