Chilled Water Piping - Trane RAUJ-C20 Installation, Operation And Maintenance Manual

N N o o t t e e : : Water volumes should be calculated as close as
possible to maintain constant water flow
through the water loop.

Chilled Water Piping

Typical Water Piping
Figure below illustrates typical water piping
components for remote chiller applications. (Remote
Figure 40. EVP chiller — typical water piping
Supply Line Outlet
Flow Switch
Air Vents
Shutoff Valves
Unions
Vibration Eliminators
N N o o t t e e s s : :
• Shutoff valves are required for evaporator servicing.
• Evaporator is shown for illustration purposes only.
• Water inlet, outlet diameter dimensional locations depend on unit size.
• Water connections at the evaporator are grooved.
• Field supplied 1/2" x 14 NPTE stainless steel or PVC plug required.
• Locate freezestat and discharge temperature sensors close to the water outlet.
• Install drain with shutoff valve at low point in leaving piping before system valve.
Foreign matter in the chilled water system will increase
pressure drop and reduce water flow. Installation of a
properly selected strainer is also necessary to prevent
debris larger than 0.039" from entering the heat
exchanger. All building piping must be thoroughly
flushed before making the final piping connections to
the heat exchanger. The strainer must also be cleaned
prior to initial start-up.
SS-SVX11K-EN
Pipe Connections
Water Strainer
Air Vents
Pressure Gauge
Unions
Balancing Valve
Gate Valves
I I n n s s t t a a l l l l a a t t i i o o n n M M e e c c h h a a n n i i c c a a l l — — E E V V P P
Chiller accessory kit includes strainer, water flow
switch, pipe stubs, couplings, evaporator insulation
and mounting legs, and a ship separate braze plate
heat exchanger.)
Vibration Eliminators
Thermometers
Gate Valves
Return Line (Inlet)
(See Note 1)
Supply Line Outlet
I I m m p p o o r r t t a a n n t t : : Start up without flushing building piping
risks plugging chiller with debris and
reducing capacity.
To reduce heat loss and prevent condensation,
insulation should be applied to piping. Expansion tanks
are also usually required to accommodate chilled water
volume changes.
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