Rinnai Furnace EX22 User Guide

EX22 (RHFE-558RWTA)  
Type of Appliance  
Direct vent wall furnace suitable for homes, apartments, and )  
condominiums; modular/mobile home approved; forced combustion,  
forced convection  
RHFE-558RWTA-N (Natural gas) RHFE-558RWTA-P (Propane)  
Rinnai Model Number  
Gas Rate Input (BTU/hour)  
Low - 8,200  
Low - 8,200  
High - 21,500  
High - 20,700  
Gas Rate Output (BTU/hour)  
Low - 6,560  
Low - 6,560  
High - 17,200  
High - 16,560  
80.6%  
81.0%  
AFUE Rating  
3.5 in (89 mm) W.C.  
10.5 in (267 mm) W.C  
AC 120V, 60 Hz, 47 watts  
1/2 inch FNPT  
8 in (203 mm) W.C.  
13 in (330 mm) W.C.  
Minimum Gas Supply Pressure  
Maximum Gas Supply Pressure  
Electrical Connection  
Gas Connection  
Stainless steel inshot burners  
Direct spark  
Combustion System  
Ignition System  
Low: 110.5  
High: 162.7  
Fan CFM Output:  
Low (LO): minimum combustion  
60° - 80° F in 2° increments  
Temperature Settings  
High (HI): maximum combustion  
Temperature Control  
Electronic 7 day, 28 event programmable set back thermostat  
Frost protection function allows a pre-set minimum room temperature  
Temperature limiting program to comply with Inside Design  
Temperature limits  
Enameled tray with capacity of 3 pints (1.3 liters)  
Approximately 51 lbs (23 kg)  
Humidifier Tray  
Weight  
Side: 2 inches (50 mm)  
Front: 40 inches (1 m)  
Top: 10 inches (250 mm)  
Clearance from Combustibles  
32 - 41 dB(A)  
Noise Level  
Bottom front louvers  
Warm Air Outlet  
FEATURES  
provides precise gas flow  
Linear function modulation:  
Negative coefficient thermistor:  
Variable speed inducer motor:  
Quiet operation:  
detects temperature change in 1/2 of a degree  
monitors and controls combustion fan  
reduces noise through use of swept blades in convection fan; and  
through the design of the combustion chamber and heat exchanger  
which silently expand or contract due to temperature changes  
continually monitors functions; provides auto shutdown codes; indicates  
when air filter needs cleaning  
Self diagnostic electronics:  
RHFE-558RWTA SP  
7/2009  
© 2009 Rinnai Corporation  
 

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