69
TEMPMASTER
FORM TPM3-EG1 (518)
EQUIPMENT
Product Specification
Summary: Completely factory-assembled, unitized construction single [two-piece unit,
consisting of condenser section and air handler section] package air conditioning unit
including a factory-mounted and wired unit controller and sensors, single-point power
connection 460V [/575V] 3-phase, 60Hz power supply, outside air handling section with
return and supply openings, discharge plenum, direct expansion (DX) refrigerant con-
densing section.
Factory Test: The refrigerant circuit shall be pressure-tested, evacuated, and fully charged
with refrigerant [nitrogen holding charge on two-piece units] and oil. The completed refrig-
erant circuit shall undergo a factory helium leak test, an automated operational run test,
and quality inspection prior to shipment. The unit controller shall be configured and run
tested at the factory to minimize field setup time. If the unit is not configured and tested,
then the manufacturer shall provide field start-up and testing to ensure that the controller
is functioning properly.
Unit Construction
Base Rail: The unit shall include an integral design base rail with lifting points clearly
marked and visible on the base rail and a 1-1/4-inch female pipe thread (FPT) connection
for condensate drainage. The unit base shall be designed with a recessed curb mounting
location. The recessed curb mounting surface shall provide a continuous surface for field
application of curb gasketing to create a weather-tight seal between the curb and unit.
Casing: Casing shall be complete post and panel construction with exterior skin. All pan-
els, doors, walls, uprights, floor panels, and roofing shall be 1-inch thick, 1-1/2 pound den-
sity insulation. Units are specifically designed for outdoor installation. Air handling section
shall be of double-wall construction, including doors, walls, and corner posts.
Roof: The unit roof shall be bowed with the peak in the middle of the unit and sloped
to both sides of the unit for drainage. A drip lip shall run the length of the unit to prevent
water drainage down the side of the unit. Roof and sidewall seams shall be continuously
caulked and covered with formed galvanized seam caps. All panel fasteners shall be se-
cured through standing seams to prevent fastener penetrations that are exposed to the
air stream.
Paint: Exterior painted surfaces are designed to withstand a minimum of 1,000 salt spray
hours when tested in accordance with ASTM B-117.
Markings and Diagrams: All necessary tags and decals to aid in the service and/or indi-
cating caution areas shall be provided. Electrical wiring diagrams shall be attached to the
control panel access door.
Documentation: Installation and maintenance manuals shall be supplied with each unit.
Access Doors: Double-wall access doors shall be provided in the fan, coil, filter, and inlet
sections of the unit on both sides of the unit. Doors shall be double-wall construction with
a solid liner and a minimum thickness of 1-inch. Doors shall be attached to the unit with
piano-type stainless steel hinges. Latches shall be positive-action, creating an airtight
seal between the door and unit. Panels and doors shall be completely gasketed with a
closed-cell, neoprene gasket. Door tiebacks shall be provided for all doors to secure them
while servicing.
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