Rinnai EX22 Specifications page 2

Safety Devices
Venting
Maximum Vent Length
Wall Thickness and
Flue Manifold Kits
(the "A" vent kit is included
with the appliance)
Warranty
Rinnai is continually updating and improving products; therefore, specifications are subject to change without prior
notice. Local, state, provincial and federal codes must be adhered to prior to installation.
DIMENSIONS
Rinnai Corporation • 103 International Drive • Peachtree City, GA 30269 • Toll-Free: 1-800-621-9419 • Fax: 678-829-1666 • www.rinnai.us
• Flame rod detects flame failure; results in auto shutdown to prevent escape
of gas
• Bi-metal switch, thermal fuse, and thermistor detect overheat condition;
results in auto shutdown
• 3 amp fuse protects against power surge; results in auto shutdown
• Abnormal spark at time of ignition results in auto shutdown
• Combustion fan purges any gas from the combustion chamber before
ignition
• Convection fan continues to run after burner shutdown to cool internal parts
• Function lock prevents inadvertent operation
• Appliance shuts down if room reaches 104° F (40° C)
concentric; 3 1/8 inch (80 mm) wall hole
13 feet (4 m) with a maximum of 2 bends; maximum 8 feet (2.4 m) vertically
Name Kit No.
S Vent Kit FOT-150
A Vent Kit FOT-151
B Vent Kit FOT-152
C Vent Kit FOT-153
D Vent Kit FOT-154
Labor: 2 years; Parts: 5 years; Heat Exchanger: 10 years with years 6-10
prorated
EX22 (RHFE-558RWTA)
fits walls
3 - 4 1/2 in (75 - 115 mm)
4 1/2 - 9 1/2 in (115 - 240 mm)
9 1/2 - 15 3/4 in (240 - 400mm)
15 3/4 - 23 5/8 in (400 - 600 mm)
23 5/8 - 31 1/2 in (600 - 800 mm)
6 1/2" (165mm)
3 3/8" (85mm)