Advantage Sentra SK Series, Instruction Manual, Page: 15 / 70

Temperature Control Units : Sentra with VE Series Instrument
Page: 15
Advantage Engineering, Inc.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
www.AdvantageEngineering.com
2.3 WATER SUPPLY CONNECTION
A. Connect the unit’s Water Supply port to the plant’s city water, well water, tower water or
chilled water supply.
B. Water supply pressure requirements vary with operating temperatures. The chart below
shows the required operating water supply pressures for various operating process
temperatures. The required water supply pressure retains process water in a liquid state
at temperatures over 180°F. Failure to maintain the required water supply pressure will
cause premature failure of and increase maintenance in susceptible areas such as the
shaft seal and heater.
C. The factory recommended minimum operating water supply pressure requirement is 20
PSI or shown the chart above based on operating temperature.
D. Static water supply pressure can be determined at the unit’s location by reading the unit’s
0-160 PSI pressure gauges when the unit’s pump motor
is OFF.
E. If water supply pressure as read on the unit’s pressure
gauges exceeds 75 PSI, a pressure reducing valve
must be installed in the water supply line (refer to
section 7.3 of this manual for installation information).
The factory recommended ‘regulated pressure out’ is 55
PSI.
2.4 DRAIN CONNECTION:
A. Connect the unit’s DRAIN port to one of the following,
determined by the water supply source:
1. Open drain for well or city water supply.
2. Tower water system return for tower system water supply.
3. Chilled water system return for chilled water system supply.
B. The factory recommends a minimum of 10 psi pressure differential between the water
supply and drain line for proper cooling.
Typical pressure reducing valve
installation (shown on S-925 model).
180°F
20 PSI
190°F
25 PSI
200°F
30 PSI
210°F
35 PSI
220°F
40 PSI
230°F
45 PSI
240°F
50 PSI
250°F
55 PSI
OPERATING TEMPERATURE
WATER SUPPLY PRESSURE
WARNING: Check local codes to determine proper use of back flow prevention device in water
supply line.