17
Suggested Overhead Pipe Sizing Table
Pipe Size Max. Flow Rate (GPM)
1/2" 2
3/4" 5
1" 10
1 1/4" 20
1 1/2" 30
2" 50
2 1/2" 90
3" 160
*Based on standard weight schedule 40 black iron or PVC
schedule 80 pipes.
NOTE: It is recommended that good piping practices are followed and that the information in
this manual is adhered to. We cannot be held responsible for liabilities created by
substandard piping methods and installation practices external to the chiller.
6.4 Overhead Piping and Drain Back Prevention
Depending on the length of hoses/piping and therefore the amount of fluid contained in the
system, fluid may drain back causing the reservoir to overflow when the unit is turned off
during shut down periods. This problem can be eliminated by locating the unit so the
reservoir is at the same level or above the system; or a check valve can be installed in the
process supply line and a solenoid valve installed in the process return line to prevent drain
back. Contact OPTI TEMP for further information at 231-946-2931 or
information@optitemp.com
.
CAUTION: The OPTI TEMP system is designed as an “open system” with the top of the
reservoir at atmospheric pressure. Do not connect any fittings to the cover of the reservoir or
pressurize the reservoir in any way or damage to the system and/or personal injury could
result. The reservoir is designed to be filled manually.
6.5 Electrical Connection
Refer to the serial number tag for the specific electrical requirements of your unit. Ensure the
voltage of the intended power source meets the specified voltage requirement. See
reference electrical requirement table below. Power must be provided through a circuit
breaker or a switch-able “fused disconnect” in close proximity to the unit and within easy
reach of the operator.
If the nominal supply voltage does not fall within the range specified in the table below a
transformer will be required. Transformers are provided in certain OPTI TEMP models
depending on voltage configuration selected. For more information contact OPTI TEMP
sales or engineering at 231-946-2931 or information@optitemp.com
.
NOTE: Check pump rotation on 3 phase units at this time. Follow the instructions on the tag
attached to the power cord.
NOTE: All electrical service installation should be performed by a qualified electrician in
accordance with all applicable code.
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