Rheem RKNL-B073CL15E, Руководство пользователя

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Air
Mechanical Specifications
RKNL-B Series
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3. Standard Heat Exchanger construction
a. Heat exchanger shall be of the tubular-section type constructed of a minimum of 20-gauge steel coated with a nominal 1.2
mil aluminum-silicone alloy for corrosion resistance.
b. Burners shall be of the in-shot type constructed of aluminum-coated steel.
c. Burners shall incorporate orifices for rated heat output up to 2000 ft (610m) elevation. Additional accessory kits may be
required for applications above 2000 ft (610m) elevation, depending on local gas supply conditions.
d. Each heat exchanger tube shall contain tubulators for increased heating effectiveness.
4. Optional Stainless Steel Heat Exchanger construction
a. Use energy saving, direct-spark ignition system.
b. Use a redundant main gas valve.
c. Burners shall be of the in-shot type constructed of aluminum-coated steel.
d. All gas piping shall enter the unit cabinet at a single location on side of unit (horizontal plane).
e. The optional stainless steel heat exchanger shall be of the tubular-section type, constructed of a minimum of 20-gauge
type 409 stainless steel.
f. Type 409 stainless steel shall be used in heat exchanger tubes.
g. Complete stainless steel heat exchanger allows for greater application flexibility.
5. Induced draft combustion motor and blower
a. Shall be a direct-drive, single inlet, forward-curved centrifugal type.
b. Shall be made from steel with a corrosion-resistant finish.
c. Shall be permanently lubricated sealed bearings.
d. Shall have inherent thermal overload protection.
e. Shall have an automatic reset feature.
23 81 19.13.J. Coils
1. Standard Aluminum/Copper Coils:
a. Standard evaporator and condenser coils shall be aluminum lanced plate fins mechanically bonded to seamless internally
grooved copper tubes with all joints brazed. (Note: 12-1/2 ton utilizes MicroChannel condensing coil).
b. Evaporator and condenser coils shall be leak tested to 150 psig, pressure tested to 400 psig, and qualified to UL 1995
burst test at 2,200 psi.
23 81 19.13.K. Refrigerant Components
1. Refrigerant circuit shall include the following control, safety, and maintenance features:
a. TXV metering system shall prevent mal-distribution of two-phase refrigerant. B073 shall use orifice refrigerant control.
b. Refrigerant filter drier.
c. Service gauge connections on suction and discharge lines.
d. External pressure gauge ports access shall be located in front exterior of cabinet.
2. Compressors
a. Unit shall use one fully hermetic, scroll compressor for each independent refrigeration circuit.
b. Compressor motors shall be cooled by refrigerant gas passing through motor windings.
c. Compressors shall be internally protected from high discharge temperature conditions.
d. Compressors shall be protected from an over-temperature and over-amperage conditions by an internal, motor overload
device.
e. Compressor shall be factory mounted on rubber grommets.
f. Compressor motors shall have internal line break thermal and current overload protection.
g. Crankcase heaters shall not be required for normal operating range.
h. Compressor shall have molded electrical plug.
23 81 19.13.L. Filter Section
1. Filters access is specified in the unit cabinet section of this specification.
2. Filters shall be held in place by filter tray, facilitating easy removal and installation.
3. Shall consist of factory-installed, low velocity, throw-away 2-in. thick fiberglass filters.
4. Filter face velocity shall not exceed 320 fpm at nominal airflows.
5. Filters shall be standard, commercially available sizes.
6. Only one size filter per unit is allowed.