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Installation Mechanical
Making Grooved Pipe Connections
Equipment Damage!
To prevent damage to water piping, do not overtighten connections. To prevent equipment
damage, bypass the unit if using an acidic flushing agent.
Note: Make sure that all piping is flushed and cleaned prior to starting the unit.
Vents and Drains
Install pipe plugs in evaporator and condenser water box drain and vent connections before fill-
ing the water systems.
To drain water, remove vent and drain plugs, install a NPT connector in the drain connection with
a shutoff valve and connect a hose to it.
Evaporator Piping Components
Note: Make sure all piping components are between the shutoff valves, so that isolation can be
"Piping components" include all devices and controls used to provide proper water system oper-
ation and unit operating safety. These components and their general locations are given below.
Entering Chilled Water Piping
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Leaving Chilled Water Piping
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Evaporator Damage!
To prevent evaporator damage, do not exceed 150 psig (10.3 bar) evaporator water pressure for
standard water boxes. Maximum pressure for high pressure water boxes is 300 psig (20.7 bar).
Refer to digit 14 of the Model No. To prevent tube damage, install a strainer in the evaporator
water inlet piping. To prevent tube corrosion, ensure that the initial water fill has a balanced pH.
50
accomplished on both the condenser and the evaporator.
Air vents (to bleed air from system)
Water pressure gauges with shutoff valves
Pipe unions
Vibration eliminators (rubber boots)
Shutoff (isolation) valves
Thermometers
Cleanout tees
Pipe strainer
Air vents (to bleed air from system)
Water pressure gauges with shutoff valves
Pipe unions
Vibration eliminators (rubber boots)
Shutoff (isolation) valves
Thermometers
Cleanout tees
Balancing valve
Pressure relief valve
Flow switch
D CAUTION
D CAUTION
RTHD-SVX04K-EN
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