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28 RTAC-SVX01F-EN
Installation - Mechanical
Installation Responsibilities
Generally, the contractor must do the following when installing an RTAC unit:
• Install unit on a flat foundation, level (within 1/4” [6 mm] across the length and
width of the unit), and strong enough to support unit loading.
• Install unit per the instructions contained in the Installation-Mechanical and
Installation-Electrical sections of this manual.
• Install any optional sensors and make electrical connections at the CH530.
• Where specified, provide and install valves in water piping upstream and
downstream of evaporator water connections to isolate the evaporator for
maintenance, and to balance/trim system.
• Furnish and install flow switch to prove chilled water flow.
• Furnish and install pressure gauges in inlet and outlet piping of the evaporator.
• Furnish and install a drain valve to the bottom of the evaporator waterbox.
• Supply and install a vent cock to the top of the evaporator waterbox.
• Furnish and install strainers ahead of all pumps and automatic modulating valves,
and at inlet of evaporator.
• Provide and install field wiring.
• Install heat tape and insulate the chilled water lines and any other portions of the
system, as required, to prevent sweating under normal operating conditions or
freezing during low ambient temperature conditions.
• Install evaporator drain plug. The plug ships in unit control panel.
• Start unit under supervision of a qualified service technician.
Nameplates
The RTAC outdoor unit nameplates (Figure 1) are applied to the exterior of the Control
Panel. A compressor nameplate is located on each compressor.
Outdoor Unit Nameplate
The outdoor unit nameplate provides the following information:
– Unit model and size description.
– Unit serial number.
– Identifies unit electrical requirements.
– Lists correct operating charges of R-134a and refrigerant oil (Trane OIL00048).
– Lists unit test pressures.
– Identifies installation, operation and maintenance and service data literature
(Pueblo).
– Lists drawing numbers for unit wiring diagrams (Pueblo).
Compressor Nameplate
The compressor nameplate provides following information:
– Compressor model number.
– Compressor serial number.
– Compressor electrical characteristics.
– Utilization range.
– Recommended refrigerant.