Rinnai EX22C User Manual

 

2 

Rinnai Corporation EX17C / EX22C Manual 

 

This appliance may be installed in an aftermarket, permanently located, manufactured home 
(USA only) or mobile home, where not prohibited by local codes. 
This appliance is only for use with the type of gas indicated on the rating plate.  This appliance 
is not convertible for use with other gases, unless a certified kit is used. 

 

Safety Definitions ............................................. 3 
Safety Behaviors and Practices ....................... 3 
Safety Features ................................................ 4 
 

 

Appliance Specifications .............................. 4, 5 
Features ........................................................... 5 
Flue Manifolds .................................................. 5 

 

Getting to Know your  
New Heating Appliance  ................................... 6 
Control Panel ................................................... 7 
ON/OFF ............................................................ 7 

Child Lock ......................................................... 7 
Setting the Clock .............................................. 8 
Operating the Heater Manually ........................ 8 
Setting and Operating the Timers .................... 8 
Override Function ............................................. 9 
Economy (Energy Saving Mode) ..................... 9 
Set back ......................................................... 10 
Humidifier and Airflow Direction ..................... 10   
 

Adding Water to the Humidifier ................. 10 

 Adjusting 

Air 

Flow Direction ...................... 10 

Care and Maintenance ................................... 11 

Maintenance ............................................. 11 
Care of Exterior ......................................... 11 
Snow Accumulation .................................. 11 
Filters ........................................................ 11 
Visual Inspection of Flame ........................ 11 

Before Making a Service Call ......................... 12 
Fault Codes .................................................... 13 
Restart Function ............................................. 14 
Troubleshooting ............................................. 14 

General Instructions ....................................... 15 
Gas Connection ............................................. 16 
Clearances to Combustibles .......................... 16 
Attach Back Covers (Sides Only) .................. 16 
Dimensions .................................................... 17 
Flue Terminal Clearances ........................ 18,19 
Installation Parts  ........................................... 20 
Drilling Flue Hole ........................................... 21 
Flue Manifold Installation ......................... 22, 23 
Extension Kit Installation .......................... 24-26 
Connecting the Appliance .............................. 27 
Adjust Gas Pressure Settings .................. 28, 29 

  Normal Operating Sequence ..................... 29 
  Visual Inspection of Flame ........................ 29 
 Final 

Assembly 

.......................................... 

29 

Operating Instructions ................................... 30 
Cut-Away Diagram ......................................... 31 
Wiring Diagram .............................................. 32 
Ladder Diagram ............................................. 33 
Parts List ................................................... 34-43 

 

Warranty Information ..................................... 44 
Limited Warranty ...................................... 44, 45 
 

 ............................................. 46-80 

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