Installation Instructions
General Instructions
Do not use substitute materials.
Use only parts certified with the appliance.
•A qualified service technician should install the appliance and inspect it before use.
•If you move, check the gas type in your new area. The local gas authority will be able to advise on local regulations.
•The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA B149.1.
•A manufactured home (USA only) or mobile home OEM installation must conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or, when such a standard is not applicable, the standard for Manufactured Home Installations, ANSI/NCSBCS A225.1, or the standard for Gas Equipped Recreational Vehicles and Mobile Housing, CSA Z240.4.
•The appliance, when installed, must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical Code, CSA C22.1.
•Appliance input ratings are based on sea level operation and need not be changed for operation up to 2000 ft (610 m) elevation. For operation at elevations above 2000 ft (610 m), follow the procedure in the section, Adjust Gas Pressure Settings.
•The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).
•The appliance must be isolated from the gas supply piping system by closing its equipment shut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi (3.5 kPa).
•If the flooring is carpet, tile, or other combustible material other than wood, then the appliance must be installed on a metal or wood panel extending the full width and depth of the appliance.
•Rinnai suggests that a dedicated electrical circuit with a 120V AC, 60 Hz, 10 amp power source be used.
•This appliance discharges a large volume of warm air next to the floor. Any particles in the air such as cigarette smoke could cause discoloration in carpet. The warm air flow could discolor nylon carpets containing dyes or vinyl surfaces. To prevent discoloration of the floor covering a mat may be placed under the appliance which extends about 30 inches (750 mm) in front of it. (Wood is included in the shipping container that can be cut to size and used if needed.)
•This appliance is not designed to built in.
•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. If a conversion of the unit is needed, conversions must be performed by a qualified service provider at the owner’s expense.
•Follow the Adjust Gas Pressure Settings (page 28) and confirm that the correct code is used for your gas type and altitude.
•This appliance must not be connected to a chimney flue serving a separate
•Two 1/8 in test plugs are provided for testing of manifold differential pressure. They are located on the modulating gas valve and on the burner manifold.
•The appliance should be correctly sized for the space it is required to heat. It is recommended that an industry standard BTU Heat Loss Calculation be conducted to determine the proper sizing.
•Follow the installations instructions and those in Care and Maintenance for adequate combustion and ventilation air.
•The flow of combustion and ventilation air shall not be obstructed.
•Clearances to access the appliance during servicing are 2 inches (50 mm) from the sides, 40 inches (1 m) from the front, and 9 inches (225 mm) from the top.
•Locate the heater where outdoor air does not affect the room air thermistor. Otherwise, the sensible temperature control feature will be affected.
Rinnai Corporation EX17C / EX22C Manual | 15 |