Installation and Maintenance Manual

RLC-SVX09H-EN 9
General Information
Unit Description
The RTWD units are helical-rotary type, water-cooled,
liquid chillers, designed for installation indoors.The units
have 2 independent refrigerant circuits, with one
compressor per circuit.The RTWD units are packaged with
an evaporator and condenser.
Note: Each RTWD unit is a completely assembled,
hermetic package that is factory-piped, wired, leak-
tested, dehydrated, charged and tested for proper
control operations prior to shipment.The chilled
water inlet and outlet openings are covered for
shipment.
The RTWD series featuresTrane's exclusive Adaptive
Control logic with CH530 controls. It monitors the control
variables that govern the operation of the chiller unit.
Adaptive Control logic can correct these variables, when
necessary, to optimize operational efficiencies, avoid
chiller shutdown, and keep producing chilled water.
Compressor unloaders are solenoid actuated. Each
refrigerant circuit is provided with filter, sight glass,
electronic expansion valve, and charging valves on the
RTWD.
The evaporator and condenser are manufactured in
accordance with ASME standards.The evaporator is fully
insulated. Both evaporator and condenser are equipped
with water drain and vent connections.
The RTUD units are helical-rotary type compressor
chillers, designed to be most effective when used with the
Levitor II air-cooled condenser.The RTUD unit consists of
an evaporator, two helical rotary compressors (one per
circuit), oil separators, oil coolers, liquid line service
valves, sightglasses, electronic expansion valves and
filter.The discharge line leaving the oil separator and
liquid line entering the filters are capped and brazed. The
unit ships with a full charge of oil and a nitrogen holding
charge.
Accessory/Options Information
Check all the accessories and loose parts which are
shipped with the unit against the original order. Included
in these items will be water vessel drain plugs, rigging
diagrams, electrical diagrams, and service literature,
which are placed inside the control panel and/or starter
panel for shipment. Also check for optional components,
such as flow switches and isolators.
General Data
Table 1. General Data - RTWD - 60 Hz - premium
efficiency
Size 150 160 180 200
Compressor L2/M1 M1/M1 M1/M2 M2/M2
Quantity 2 2 2 2
Nominal Size 65/70 70/70 70/85 85/85
Evaporator
2 Pass Arrangement
Water Conn.
Size
NPS 6 6 6 6
mm 150 150 150 150
Water Storage
(gal) 27.8 27.8 29.3 31.3
(L) 105.1 105.1 110.9 118.3
Minimum Flow
(gpm) 174 174 186 202
(L/s) 11.0 11.0 11.8 12.7
Maximum
Flow
(gpm) 639 639 683 739
(L/s) 40.3 40.3 43.1 46.7
3 Pass Arrangement
Water Conn.
Size
NPS 4 4 4 4
mm 100 100 100 100
Water Storage
(gal) 27.1 27.1 28.6 30.6
(L) 102.4 102.4 108.3 115.7
Minimum Flow
(gpm) 116 116 124 134
(L/s) 7.3 7.3 7.8 8.5
Maximum
Flow
(gpm) 426 426 456 493
(L/s) 26.9 26.9 28.7 31.1
Condenser
Water Conn.
Size
NPS 6 6 6 6
mm 150 150 150 150
Water Storage
(gal) 30.0 30.0 32.9 32.9
(L) 113.4 113.4 124.4 124.4
Minimum Flow
(gpm) 206 206 231 231
(L/s) 13 13 14.6 14.6
Maximum
Flow
(gpm) 755 755 845 845
(L/s) 47.6 47.6 53.3 53.3
General Unit
Refrig Type R-134a R-134a R-134a R-134a
# Refrig
Circuits
2222
Refrigerant
Charge
(lb)
174.2/
183.0
183.0/
183.0
180.8/
180.8
178.6/
178.6
(kg) 79/83 83/83 82/82 81/81
Oil Charge
(qts) 10.5/12.4 12.4/12.4 12.4/12.4 12.4/12.4
(L) 9.9/11.7 11.7/11.7 11.7/11.7 11.7/11.7
Notes:
1. Data containing information on two circuits is shown as circuit 1/
circuit 2.
2. Flow limits are for water only.