
2 Rinnai Corporation EX17C / EX22C Conversion Manual
Conversion of the appliance for operation at high altitudes (> 2000 ft, 610 m) requires the completion of the
section, Adjust Gas Pressure Settings, using the high altitude manifold test pressures above. No parts need to be
replaced for high altitude.
High Altitude Installation
For high altitude installations in Canada, the conversion shall be carried out by a manufacturer’s authorized
representative, in accordance with the requirements of the manufacturer, provincial or territorial authorities having
jurisdiction and in accordance with the requirements of CAN/CGA-B149.1 or CAN/CGA-B149 installation codes.
The input rate can be verified by following the procedure in the National Fuel Gas Code (NFPA54 / ANSI Z223.1, 2006 or latest
edition).
Natural Gas Propane Gas
Minimum supply gas pressure 3.5 in (89 mm) W.C. 8.0 in (203 mm) W.C.
Maximum supply gas pressure 10.5 in (267 mm) W.C. 13.0 in (330 mm) W.C.
EX17C BTU/hour input Low 8200 High 16700 Low 8200 High 16700
EX17C BTU/hour output Low 6560 High 13360 Low 6560 High 13360
EX22C BTU/hour input Low 8200 High 21500 Low 8200 High 20700
EX22C BTU/hour output Low 6560 High 17200 Low 6560 High 16560
Technical Data
Safety Symbols
Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury. It may also be used to alert against unsafe practices.
This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and
others.
DANGER
CAUTION
WARNING
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