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Date: Supersedes:
50TFF004-014
SINGLE-PACKAGE ELECTRIC
COOLING UNITS WITH
FIELD-INSTALLED ELECTRIC HEAT
50TFF
Rev.:
-4SB
JOB NAME: LOCATION:
BUYER: BUYER P.O. # CARRIER #
UNIT NUMBER: MODEL NUMBER:
UNIT DESIGNATION:
PERFORMANCE DATA CERTIFIED BY: DATE:
DESCRIPTION
Units are a single piece, electric cooling unit, with a low profile, pre-wired, tested and charged at the factory.
The units have the capability for convertible supply and return openings and are intended for installation on an
accessory curb (ordered separately), or for slab mounting (for horizontal duct connections). Units are designed
to accept a field-installed economizer, enthalpy control, manual or two-position outside-air damper, roof curb,
as well as many choices of field-installed electric heat. Refer to accessory chart below for full listing.
FEATURES
• Standard one-year full product warranty.
• Five-year protection plan for the motor-compressor.
• Outdoor ambient cooling operation from 25 F (–4 C) to 115 F (46 C).
• Units are tested and certified by ARI and certified by UL and CSA.
Factory-run test printout included in each rooftop.
• 24-volt control circuit, with resettable breaker.
• Two-inch disposable-type return air filters in dedicated rack.
• Hermetic compressor on independent circuit with internal line break and
overload protection, self-lubricating with internal discharge muffler.
• Scroll compressor with internal overload protection (50TFF007 and
50TFF014).
• Each refrigerant circuit contains a filter drier to trap dirt and particles.
• Single compressor on 3 to 6 ton units.
• Dual compressors on 7
1
/
2
to 12
1
/
2
ton units.
• Two-speed direct drive evaporator fan on all units except size 007 which
is belt driven. Adjustable belt drive fans are optional on all sizes.
• Non-corrosive condensate pan with self-draining sloping design with
both bottom and side drain connections.
• Thru-the-bottom power control entry capability.
• Evaporator and condenser coils constructed of aluminum fins mechani-
cally bonded to seamless copper tubes.
• Single point electrical connections.
• Direct-drive propeller condenser fan totally enclosed with permanently
lubricated bearings.
• Pre-painted, insulated cabinet with primer inner panels, certified 500-hr
salt spray test and non-corrosive screws.
• Large, easily removable panels provide ready access to unit components
for rapid removal or maintenance.
• Filter access door for filter access and maintenance that requires no tools.
• Fixed orifice metering device precisely controls refrigerant flow to each
circuit individually.
• Reliable accurate control circuit with color coded wires and easy acces-
sible terminal board.
• Loss of charge, freeze protection, and high pressure switches standard.
• Cooling units with field-installed electric heat with accessory single-
point electrical kit have single-point electrical power connection — UL
approved.
PERFORMANCE DATA
COOLING
Net Total Cap. _____________________________________________ Btuh
Net Sensible Cap. __________________________________________ Btuh
Compressor Power Input _____________________________________ kW
_______________________________________ F Outdoor Air Temperature
Indoor Entering Air db _______________ F wb _________________ F
Cfm ___________________ Ext. Static Pressure ______________ in. wg
EER _________________________________________________________
HEATING
Heating Capacity
kW ________________________________________________________
Btuh _______________________________________________________
OPERATING WEIGHT
_________ lb (unit) _____________lb (curb)
ELECTRICAL DATA
Power Supply to Unit _____________ Volts _________________ Phase ___________________ Hz
Minimum Circuit Amps ________________ Maximum Overcurrent Protection (Fuse only)____________