Trane RTHD - Manual (Page 6)

RLC-PRC020-EN 6
Options
Insulation
All low temperature surfaces are
covered with factory installed 3/4 inch
(19.05 mm) Armaflex II or equal (k=0.28)
insulation, including the evaporator and
water boxes, suction line, and motor
housing. 3/8" foam insulation is used on
the liquid level sensor and gas pump
assembly, including piping.
Low-Temperature Evaporator
Addition of an oil cooler to the oil circuit
enables evaporator operation down to
minimum leaving water temperature of
10°F (-12.2°C).
High-Temperature Condenser
Addition of an oil cooler to the oil circuit
enables condenser operation up to
maximum leaving water temperature of
114°F (45.6°C).
Smooth-Bore Condenser Tubes
Smooth-bore copper or premium cupro-
nickel condenser tubes, 3/4" (19.05 mm) in
diameter with .035" (0.889 mm) wall
thickness, are available for high fouling
water applications.
Refrigerant Isolation Valves
Factory-installed condenser inlet and
outlet refrigerant valves allow isolation of
the full refrigerant charge in the
condenser while servicing the chiller.
Marine Water Boxes
Addition of marine water boxes for the
condenser allows tube cleaning without
water pipe interference.
300 psig Evaporator and Condenser
Water Boxes
Water boxes are designed for 300 psig
maximum waterside working pressure,
and grooved pipe water connections are
provided for ease of installation.
2-Way Condenser Water Regulating Valve
For water regulation, a field-installed,
2-way butterfly-type (lug-style) valve,
with integral electrical operator and
factory-mounted valve actuator, is
available. The single-phase, reversible
motor can be factory-wired for 115 VAC,
60 Hz or 220 VAC, 50 Hz; the 2-way valve
is field-wired and controlled by the chiller
regulating valve control output; valves
are available in 6" and 8" (152.4 and
203.2 mm) sizes.
Nitrogen Charge
Unit is shipped with a nitrogen holding
charge in lieu of refrigerant.
Seal Kit for Reassembly
Ideal for situations when the bolt-together
construction of the RTHD will be
separated for installation, this seal kit
provides replacement gaskets and rings
for reassembly.
Solid State Starter
Solid State Starter is unit-mounted with a
NEMA 1 gasketed enclosure. To extend
starter life, contactors bypass current
from the silicon control rectifiers (SCRs)
after startup.
Under/Over-Voltage Protection
Unit receives protection against
variations in voltage (current lag and
spike protection is standard).
Performance and Witness Tests
ARI-certified RTHD Performance and
Witness Tests are available, based on
requested operating points, to certify
chiller performance before delivery.
Main Power Disconnect
Options:
Non-fused Disconnect
A UL-approved non-fused molded case
disconnect switch, factory pre-wired with
terminal block power connections and
equipped with a lockable external
operator handle, is available to
disconnect the chiller from main power.
Standard Interrupting Capacity Circuit
Breaker
A UL-approved standard interrupting
molded case capacity circuit breaker,
factory pre-wired with terminal block
power connections and equipped with a
lockable external operator handle, is
available to disconnect the chiller from
main power.
High Interrupting Capacity Circuit
Breaker
A UL-approved high interrupting molded
case capacity circuit breaker, factory pre-
wired with terminal block power
connections and equipped with a lockable
external operator handle, is available to
disconnect the chiller from main power.
Ground Fault Circuit Breaker
A UL-approved standard interrupting
molded case capacity circuit breaker with
ground fault interrupting capability,
factory pre-wired with terminal block
connections and equipped with a lockable
external operator handle, is available to
disconnect the chiller from main power.