General Information
18 RTHD-SVX02H-EN
Table 3. Installation Responsibility Chart for RTHD Units
Requirement
Trane-supplied,
Trane-installed
Trane-supplied,
Field-installed
Field-supplied,
Field-installed
• Rigging • Safety chains
• Clevis connectors - Lifting beam
• Isolation • Isolation pads
• Elastomeric Isolators (option)
• Isolation pads
• Elastomeric Isolators (option)
• Electrical • Circuit breakers or non-fused
disconnects (optional)
• Unit-mounted starter
• Circuit breaker or non-fused dis-
connect handle
• Temperature sensor (optional
outdoor air)
• Flow switches (may be eldsu-
plied)
• Condenser water regulating valve
controller (optional: may be el-
supplied)
• Circuit breakers or fusible discon-
nects (optional)
• Terminal lugs
• Ground connection(s)
• Jumper bars
• BAS wiring (optional)
• IPC wiring
• Control voltage wiring
• High condenser pressure interlock
wiring
• Chilled water pump contactor and
wiring
• Condenser water pump contactor
and wiring
• Optional relays and wiring
• Water piping • Flow switches (may be eldsup-
plied)
• Condenser water regulating valve
controller (optional: may be eld-
supplied)
• Thermometers
• Water ow pressure gauges
• Isolation and balancing valves water
piping
• Vents and drain valves
• Pressure relief valves (for water
boxes as required)
• Pressure Relief • Relief valves • Vent line and exible connector
• Insulation • Insulation (optional) • Insulation
Refer to the Installation Mechanical and Installation
Electrical sections of this manual for detailed installation
instructions.
• Locate and maintain the loose parts, e.g. isolators,
temperature sensors, flow sensors or other facto-
ry-ordered, field-installed options, for installation, as
required. Loose parts are located in the starter/con-
trol panel.
• Install the unit on a foundation with flat support
surfaces, level within 1/4” (6.35 mm) and of sufficient
strength to support concentrated loading. Place the
manufacturer-supplied isolation pad assemblies un-
der the unit.
• Install the unit per the instructions outlined in the
Mechanical Installation section.
• Complete all water piping and electrical connections.
Note: Field piping must be arranged and supported
to avoid stress on the equipment. It is strongly
recommended that the piping contractor provide
at least 3 feet (914 mm) of clearance between the
pre-installation piping and the planned location
of the unit. This will allow for proper fit-up upon
arrival of the unit at the installation site. All nec-
essary piping adjustments can be made at that
time. Refer to the current engineering bulletin for
further details on installation.
• Where specified, supply and install valves in the wa-
ter piping upstream and downstream of the evapora-
tor and condenser water boxes, to isolate the shells
for maintenance and to balance/trim the system.
• Supply and install condenser water control valve(s)
per Trane Engineering Bulletin -Water Cooled Series
R® Condenser Water Contol.
• Supply and install flow switches or equivalent de-
vices in both the chilled water and condenser water
piping. Interlock each switch with the proper pump
starter and UC800, to ensure that the unit can only
operate when water flow is established.
• Supply and install taps for thermometers and pres-
sure gauges in the water piping, adjacent to the inlet
and outlet connections of both the evaporator and
the condenser.
• Supply and install drain valves on each water box.
• Supply and install vent cocks on each water box.
• Where specified, supply and install strainers ahead
of all pumps and automatic modulating valves.
• Supply and install refrigerant pressure relief piping
from the pressure relief to the atmosphere.
• If necessary, supply enough HCFC-134 refrigerant
and dry nitrogen (75 psig) for pressure testing.
• Start the unit under supervision of a qualified service
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