50 RTHD-SVX01D-EN
Installation Mechanical
• Condenser leaving water temperature must be 17°F degrees higher than
evaporator leaving water temperature within 2 minutes of startup. A 25°F
diferential must be maintained thereafter.
If the above guidelines cannot be met, then some form of tower water con-
trol must be used.
Condenser Water Regulating Valve Adjustment
A separate TechView Settings Menu tab entitled "Condenser Head Pressure
Control - Setup" that is only visible if the configuration is selected, contain the
following settings and manual overrides for user adjustments and commis-
sioning all under one tab:
• "Off State" Output Command (0-10 Vdc 0.1 volt increments, Default 2.0
Vdc)
• Output Voltage @ Desired Minimum Flow (Adj: 0 to 10.0 in 0.1 volt incre-
ments, Default 2.0 Vdc)
• Desired Minimum Flow (Adj: 0- 100% of full flow in 1% intervals, Default
20%)
• Output Voltage @ Desired Maximum Flow (Adj: 0 to 10.0 in .1 volt incre-
ments (or finer), Default 10 Vdc)
• Actuator Stroke Time (Min to Max Range Time) (Adj: 1 to 1000 seconds,
in 1 second increments, Default 30s)
• Damping Coefficient (adj: 0.1 to 1.8 , in .1 increments, Default .5)
• Head Pressure Control Override (enumeration of: disabled (auto), "off"
state, minimum, maximum (100%),) default :disabled (auto). When this
setting is in "disabled (auto)"
• Condenser Water Pump Prerun Time ( )
Water Treatment
CAUTION
Proper Water Treatment!
The use of untreated or improperly treated water in a RTHD may
result in scaling, erosion, corrosion, algae or slime. It is
recommended that the services of a qualified water treatment
specialist be engaged to determine what water treatment, if any,
is required. The Trane Company assumes no responsibility for
equipment failures which result from untreated or improperly
treated water, or saline or brackish water.
Using untreated or improperly treated water in these units may result in inef-
ficient operation and possible tube damage. Consult a qualified water treat-
ment specialist to determine whether treatment is needed.
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