Mechanical Specifications - Trane SS-PRC003-EN Owner's Manual

General
General
Units shall be assembled on heavy
Units shall be assembled on heavy
gauge steel mounting/lifting rails and
gauge steel mounting/lifting rails and
shall be weatherproofed. Units shall
shall be weather proofed. Units shall
include a reciprocating compressor(s),
include hermetic scroll compressors,
plate fin condenser coil(s), fan(s) and
plate fin condenser coils, fans and
motor(s), control(s), and holding charge
motors, controls and holding charge of
of nitrogen. Operating range shall be
nitrogen. Operating range shall be
between 115°F (46.1°C) and 50°F (10°C)
between 115°F and 50°F in cooling as
in cooling as standard from the factory.
standard from the factory. Units shall be
Units shall be rated in accordance with
UL 1995 listed, certified and rated in
ARI Standard 340/360 or 365.
accordance with ARI Standard 340/360
or 365.
Casing
Unit casing shall be constructed of 18
Casing
gauge zinc coated, heavy gauge,
Unit casing shall be constructed of 18
galvanized steel. Exterior surfaces shall
gauge zinc coated heavy gauge,
be cleaned, phosphatized, and finished
galvanized steel. Exterior surfaces shall
with a weather-resistant baked enamel
be cleaned, phosphatized and finished
finish. The surface of the unit shall be
with a weather-resistant baked enamel
tested 500 hours in salt spray test. Units
finish. Units surface shall be tested 500
shall have removable end panels which
hours in salt spray test. Units shall have
allow access to all major components
removable end panels which allow
and controls.
access to all major components and
controls.
Refrigeration System – Single
Compressor
Refrigeration System – Single
TTA075A, TTA100A units shall have a
Compressor
single refrigeration circuit. Each
TTA075A, TTA100A units shall have a
refrigeration circuit has an integral
single refrigeration circuit. Each
subcooling circuit. A refrigeration filter
refrigeration circuit has an integral
drier shall be provided as standard. The
subcooling circuit. A refrigeration filter
TTA075, TTA100 units shall have both a
drier shall be provided as standard. The
liquid line and suction gas line service
TTA075A, TTA100A units shall have both
valve with gauge port.
a liquid line and suction gas line service
valve with gauge port.
TTA075A, TTA100A units shall have one
TTA075A, TTA100A units shall have one
direct-drive, hermetic scroll compressor
direct-drive hermetic scroll compressor
with centrifugal oil pump providing
with centrifugal oil pump providing
positive lubrication to moving parts.
positive lubrication to moving parts.
Motor shall be suction gas-cooled and
Motor shall be suction gas-cooled and
shall have a voltage utilization range of
shall have a voltage utilization range of
plus or minus 10 percent of unit
plus or minus 10 percent of unit
nameplate voltage. Crankcase heater,
nameplate voltage. Crankcase heater,
discharge line thermostat, and current-
internal temperature and current-
sensitive motor overloads shall be
sensitive motor overloads shall be
included for maximum protection. Scroll
included for maximum protection. Scroll
type compressor shall provide inherently
type compressor shall provide
low vibration and noise by having no
inherently low vibration and noise by
suction and discharge valves. External
having no suction and discharge valves.
high and low pressure cutout devices
External high and low pressure cutout
shall be provided. Evaporator defrost
devices shall be provided. Evaporator
control provided in indoor blower coil
defrost control provided in indoor
shall prevent compressor slugging by
blower coil shall prevent compressor
temporarily interrupting compressor
slugging by temporarily interrupting
operation when low evaporator coil
compressor operation when low
temperatures are encountered.
evaporator coil temperatures are
encountered.
76
Mechanical
Specifications
Refrigeration System – Dual
Refrigeration System – Dual
Compressor
Compressor
TTA100B,TTA125B, TTA155B, TTA200B
TTA100B,TTA125B, TTA155B, TTA200B
units shall have two separate and
units shall have two separate and
independent refrigeration circuits. Each
independent refrigeration circuits. Each
refrigeration circuit shall have an integral
refrigeration circuit shall have an
subcooling circuit. A refrigeration filter
integral subcooling circuit. A
drier shall be provided as standard. Units
refrigeration filter drier shall be
shall have both a liquid line and suction
provided as standard. Units shall have
gas line service valve with gauge port.
both a liquid line and suction gas line
service valve with gauge port.
TTA100B,TTA125, TTA155B, TTA200B
TTA100B,TTA125B, TTA155B, and
units shall have two Trane direct-drive,
TTA200B units shall have two Trane
hermetic scroll compressors with
direct-drive hermetic scroll
centrifugal oil pump and provide positive
compressors with centrifugal oil pump
lubrication to all moving parts. Motor
and provide positive lubrication to all
shall be suction gas-cooled and shall
moving parts. Motor shall be suction
have a voltage utilization range of plus or
gas-cooled and shall have a voltage
minus 10 percent of nameplate voltage.
utilization range of plus or minus 10
Crankcase heater, discharge line
percent of nameplate voltage.
thermostat, and current-sensitive motor
Crankcase heater, internal temperature
overloads shall be included for maximum
and current-sensitive motor overloads
protection. Scroll compressor shall
shall be included for maximum
provide inherently low vibration and
protection. Scroll compressor shall
noise by having no suction and discharge
provide inherently low vibration and
valves. External high and low pressure
noise by having no suction and
cutout devices shall be provided.
discharge valves. External high and low
Evaporator defrost control provided in
pressure cutout devices shall be
indoor blower coil shall prevent
provided. Evaporator defrost control
compressor slugging by temporarily
provided in indoor blower coil shall
interrupting compressor operation when
prevent compressor slugging by
low evaporator coil temperatures are
temporarily interrupting compressor
encountered.
operation when low evaporator coil
Refrigeration System — Dual
temperatures are encountered.
Manifolded Compressors
Refrigeration System — Dual
TTA 100C and TTA155C units shall have a
Manifolded Compressors
single refrigeration circuit with an integral
TTA 100C, TTA155C and TTA200F units
subcooling circuit. A refrigeration filter
shall have a single refrigeration circuit
drier shall be provided as standard. Units
with an integral subcooling circuit. A
shall have both a liquid line and suction
refrigeration filter drier shall be
gas line service valve with gauge port.
provided as standard. Units shall have
both a liquid line and suction gas line
service valve with gauge port.
The units shall have two scroll
compressors manifolded together.
Motor shall be suction gas-cooled and
shall have a voltage utilization range of
plus or minus 10 percent of nameplate
voltage. Crankcase heater, internal
temperature and current-sensitive
motor overloads shall be included for
maximum protection. Scroll type
compressor shall provide inherently low
vibration and noise by having no suction
and discharge valves. External high and
low pressure cutout devices shall be
Condensing Units
provided. Evaporator defrost control
provided in the indoor blower coil shall
prevent compressor slugging by
temporarily interrupting compressor
operation when low evaporator coil
temperatures are encountered.
Condenser Coil
Coils shall be internally finned 3/8"
copper tubes mechanically bonded to
configured aluminum plate fin as
standard. Factory pressure and leak
tested to 660 psig. Metal grilles with PVC
coating for coil protection are optional.
Condenser Fan And Motor(s)
Direct-drive, statically and dynamically
balanced 26 or 28 inch propeller fan(s)
shall be used in draw-through vertical
discharge position. Either permanently
lubricated totally enclosed or open
construction motors shall be provided
and shall have built in current and
thermal overload protection. Motor(s)
shall be either ball or sleeve bearing
type.
SS-PRC003-EN