Installation Sheet

Rinnai Corporation EX17CT, EX22CT Manual 21
Specifications
Rinnai is continually updating and improving products. Therefore, specifications are subject to change without
prior notice.
The efficiency rating of this appliance is a product thermal efficiency rating determined under continuous operating
conditions and was determined independently of any installed system.
Safety Features
 Overheat: The appliance will automatically shut
down when the appliance exceeds a predetermined
temperature.
 Flame Failure: The appliance will automatically
shut down if the burner flame is extinguished.
 Power Failure: The appliance will shut off the gas
if it loses electrical power.
 Power Surge Fuse: A glass fuse on the PC board
protects against overcurrent. If the fuse blows then
all indicator lamps will be off.
 Spark Detector: The appliance automatically shuts
down if there is an abnormal spark at ignition.
 Fusible Link: In case the overheat feature does
not prevent an overheat then the fusible link could
break, shutting off the appliance.
Appliance Specifications
EX17CT EX22CT
Application
Approved for manufactured home (USA only) or mobile home or residential installation
convertible for use with natural gas and liquefied petroleum gases (propane / LPG)
when provision is made for the simple conversion from one gas to the other.
Approved for commercial setting.
Approved for installation at altitudes up to 10,200 feet (3109 m).
Natural Gas Propane Gas
Min. Supply Gas Pressure 3.5 in(89 mm) W.C. 8.0 in(203 mm) W.C.
Max. Supply Gas Pressure 10.5 in(267 mm) W.C. 13.0 in(330 mm) W.C.
BTU/hour input Low 8200 High 16700 Low 8200 High 21500 Low 8200 High 20700
BTU/hour output Low 6560 High 17200 Low 6560 High 16560 Low 6560 High 13360
General Description Forced combustion, forced convection, flued gas furnace
Operation Push button electronic
Gas Connection 1/2 in male NPT
Gas Control Electronic
Burners Stainless steel Bunsen burner
Temperature Control Electronic thermostat, (Low, 60-80ºF in 2ºF increments, High)
Temperature Range Low, 60 - 80°F (in 2°F increments), High
Ignition System Electronic spark ignition
Flue System
The flue must be terminated to atmosphere with only flue components listed with the
appliance’s certification. Warranty will be voided if non listed components are installed.
Humidifier Tray
Capacity - 2.1 pints (1000 cc)
Electrical Connection
AC 120V, 60 Hz, 46 watts AC 120V, 60 Hz, 56 watts
Standby Power 0.5 watt
Weight
57 lbs (26 kg)
Noise Level
33-38 dB 33-42 dB
AFUE Rating
Natural Gas: 81% Propane: 82% Natural Gas: 80% Propane: 82%