Mechanical Specifications
Condenser Coil Guard — Metal grille with PVC coating shall be provided to alleviate coil damage.
Black Epoxy Coated Condenser Coil — This factory installed option is designed to provide corrosion protection of air cooled condenser coils for seacoast application. The black epoxy coil protection is a factory applied thermoset vinyl coating, bonded to normal aluminum fin stock. The uniform thickness of the bonded vinyl layer exhibits excellent corrosion protection in salt spray tests performed in accordance with ASTM B177.
Air Handlers
General
Air handler units shall be completely factory assembled including coil, condensate drain pan, fan motor(s), filters, and controls in an insulated casing that can be applied in either vertical or horizontal configuration. Unit shall be rated and tested in accordance with ARI standard 340/360. Unit shall be UL listed and labeled in accordance with UL 1995 for indoor blower coil units.
Casing
Unit casing shall be constructed of zinc coated, heavy gauge, galvanized steel. Exterior surfaces shall be cleaned, phosphatized, and finished with a
Refrigeration System TheTWE050A,TWE075A,TWE100A units shall have a single refrigeration circuit and theTWE100B,TWE155B,TWE200B units shall have dual refrigeration circuits. Each refrigeration circuit is controlled by a factory installed thermal expansion valve.
Evaporator Coil
Configured aluminum fin surface shall be mechanically bonded to 3/8" (10 mm) internally enhanced copper tubing and
shall be factory pressure and leak tested at 375 psig (2586 kPa). Coil is arranged for
Evaporator Fan
Double inlet, double width, forward curved,
Controls
Magnetic evaporator fan contactor, low voltage terminal strip, check valve(s), and single point power entry shall be included. All necessary controls shall be
Filters
One inch,
ACCESSORIES
Electric Heaters — UL and CSA approved electric heat modules shall be available for installation directly on fan discharge. Electric heaters shall be available in a wide range of capacities with one or two stage control, single- point electric power connection, and terminal strip connections. Electric heater elements shall be constructed of
three phase. Each 400 volt heater shall have automatic line break high limit controls.
Discharge Plenums and Grilles — Accessory discharge plenums shall be available for vertical, free discharge applications. Plenums shall be constructed of
Return Air Grilles — Accessory return air grille shall be provided for vertical front, free return applications. Grilles shall be installed in place of the front lower side panel. Grille shall be satin finished aluminum with
Mounting Subbase
Vibration Isolators
Oversized Motors — Field installed oversized motors shall be available for high static pressure applications.
CONTROL OPTIONS
Standard IndoorThermostats
Programmable Electronic Night Setback Thermostat
OutdoorThermostat
53 |