1812 HEWITT AVE 2024-03-05 - Laserfiche WebLink

Mechanical Specifications General The units shall be horizontal airflow as shipped and convertible to downflow. All units shall be factory assembled, piped, internally wired and fully charged with refrigerant. Units shall be certified to UL Standard 1995. All units shall be factory run tested to check cooling operation, fan and blower rotation and control or TXV se- quence. Units shall be designed to operate at ambient temperatures between 115°F and 55°F in cooling as manufactured. Cooling performance shall be rated in ac- cordance with A.H.R.I. standards. Unit Casing All components shall be mounted in a weather -resistant steel cabinet with an enamel finish. Access panels shall be pro- vided for unit controls and indoor coil and fans. Indoor air section compartment shall be completely insulated with fireproof, permanent, odorless glass fiber material. Knockouts shall be provided for utility and control connections. Drain connections shall be provided to accommodate indoor water runoff. Compressor The compressor shall be hermetically sealed, high efficiency Climatufr two - stage compressors. Internal overcurrent and over temperature protection, internal pressure relief shall be standard. Refrigeration System All units shall have TXV in cooling and TXV in heating. Service pressure tap ports, and a refrigerant line filter dryer shall be stan- dard. Indoor Coil Coils shall be internally finned or smooth bore 3/8" copper tubes mechanically bonded to configured aluminum plate fin as standard. Evaporator coil leak and pressure tested to 200 psig; condenser coil tested to 450 psig. Condenser Coil — The Spine Fin TM condenser coil shall be continuously wrapped, corrosion resis- tant all aluminum with minimum brazed joints. This coil is 3/8 inch O.D. seamless aluminum tubing glued to a continuous aluminum fin. Coils are lab tested to withstand 2,000 pounds of pressure per square inch. The outdoor coil provides low airflow resistance and efficient heat transfer. The coil is protected on all four sides by louvered panels. Indoor Air Fan — Direct -drive, forward - curved, centrifugal wheel in a Composite Vortica° Blower housing. Motor shall have thermal overload protection. Permanently lubricated motor bearings. Motor/blower assembly isolated from unit with rubber mounts. Condenser Fan — Direct -drive, draw thru propeller type. Weather -proofed permanent split capacitor fan motor shall have built-in thermal overload and per- manently lubricated motor bearings. System Controls System controls include condenser fan, evaporator fan and compressor contac- tors. Accessories Roof Curb — The roof curb shall be de- signed to mate with the unit and provide support and complete weathertight instal- lation when properly installed. Adhesive back polyurethane sealing strips shall be provided to ensure an airtight seal be- tween supply and return openings of the curb and unit. The roof curb design allows field fabricated ductwork to be connected directly to the curb. Curb ships knocked down for field assembly, and includes factory -installed wood nailer strips. Electric Heaters — Each heater assem- bly shall include power supply fusing if over 48 amps, automatic resetting limit switches and heat limiters for thermal protection. Heaters shall be provided with polarized plugs for quick connection to unit low voltage wiring. Electric heat mod- ules shall be UL listed. Single Source Power Entry — This ac- cessory when used with electric heat accessory shall allow single source power connection to unit and heater combina- tion. Single source power entry kits shall have specific matching heater(s). Kit shall include high voltage terminal blocks, fuse blocks and fuses, cut -to -length in- terconnecting wiring, and junction box (if required) to provide power sources with fuse protection as required for both the unit and accessory heater. Kit compo- nents shall install within the unit cabinet in the heater access section. Single source branch power circuit shall be protected and wired in accordance with local codes. Fully Modulating Economizer — This accessory shall be field installed and be composed of the following items: 0-100% fresh air damper, damper drive motor, fixed dry bulb enthalpy control, and low voltage wiring plug for electrical connections. Solid state enthalpy or differential enthalpy con- trol is optional. Economizer operations shall be controlled by the preset position of the enthalpy control. A barometic relief damper shall be standard with the econo- mizer and provide a pressure operated damper that shall be gravity closing and prohibit entrance of outside air on equip- ment "off" cycle. Economizer requires BAYRLAY004A relay kit to interface the economizer to the heat pump. Manual Outside Air Dampers — Rain hood and screen shall be field installed. Suitable for up to 25% outside air. Start Kit — Extra compressor starting ca- pacity for single phase equipment. Control Options Standard Indoor Thermostats — Two stage heating/cooling or one stage heat- ing/cooling thermostats shall be available in either manual or automatic changeover. Programmable Electronic Night Set- back Thermostat — Programmable electronic thermostat shall provide heat- ing setback and cooling setup with 7-day, programming capability. 1 H/1 C or 2H/2C models available. About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. C us AHRI Standard I I For more information, please visit www.trane.com or www. americanstandardair.com Intertek The manufacturer has a policy of continuous data improvement and it The AHRI Certified mark indicates company participation in reserves the right to change design and specifications without notice. We the AHRI Certification program. For verification of individual are committed to using environmentally conscious print practices. certified products, go to ahridirectory.org. 4WCZ6048B-S1JB-IA-EN 28 May 2020 Supersedes 4WCZ6048B-SUB-1 (May 2014) © 2020