Trane Optimus RTHD - Pressure Gauges, Relief Valves, and Flow Sensing; Refrigerant Pressure Relief Valve Venting

Installation Mechanical
32 RTHD-SVX01K-EN
Making Grooved Pipe Connections
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 filling 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
accomplished on both the condenser and the
evaporator.
“Piping components” include all devices and controls
used to provide proper water system operation and unit
operating safety. These components and their general
locations are given below.
Entering Chilled Water Piping
• 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
• Flow switch
Leaving Chilled Water Piping
• 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
Condenser Piping Components
“Piping components” include all devices and controls
used to provide proper water system operation and unit
operating safety. These components and their general
locations are given below.
Figure 16. Condenser and evaporator waterboxes — DGG/EGG
OUT
IN
COND
EVAP
OUT
IN
3 Pass Evap Connection
Configuration
(left or right hand)
Depending on Water Inlet
NOTICE
Heat Exchanger Damage!
Failure to follow instructions below could result in heat
exchanger damage.
If an acidic commercial flushing solution is used,
bypass the EVP chiller to prevent damage.
NOTICE
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.