Trane RTHD

RTHD-SVX01D-EN 13
General Information
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 necessary piping adjustments can be made at
that time. Refer to the current engineering bulletin for further details on instal-
lation.
• Where specified, supply and install valves in the water piping upstream
and downstream of the evaporator 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 Control.
• Supply and install flow switches or equivalent devices in both the chilled
water and condenser water piping. Interlock each switch with the proper
pump starter and CH530, to ensure that the unit can only operate when
water flow is established.
• Supply and install taps for thermometers and pressure 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 auto-
matic 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 technician.
• Where specified, supply and insulate the evaporator and any other por-
tion of the unit, as required, to prevent sweating under normal operating
conditions.
• For unit-mounted starters, cutouts are provided at the top of the panel for
line-side wiring.
• Supply and install the wire terminal lugs to the starter.
• Supply and install field wiring to the line-side lugs of the starter.