Franklin Electric SubDrive Utility UT2W User manual

franklinwater.com
SUBDRIVE UTILITY
Owner's Manual

2
COPYRIGHT INFORMATION
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non-commercial internal use only. This is a single copy, single use license, not a transfer of title, and is subject to the following restric-
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proprietary notices from them.
The information in this publication is provided for reference only and is subject to change without notice. While every effort has been
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lete. Refer to 35T35TUwww.franklinwater.comU35T for the current version.
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applicable law, Franklin Electric disclaims all warranties, express or implied, including but not limited to, implied warranties of merchant-
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does not warrant or make any representations regarding the use, validity, accuracy, or reliability of the material in this publication.
Under no circumstances, including but not limited to, negligence, shall Franklin Electric be liable for any direct, indirect, special, inciden-
tal, consequential, or other damages, including, but not limited to, loss of data, property damage, or expense arising from, or in any way
connected with, installation, operation, use, or maintenance of the product based on the material in this manual.
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logo displayed on this site, without the express written permission of Franklin Electric.
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Franklin Electric
Technical Publications
9255 Coverdale Road
Fort Wayne, IN 46809

TABLE OF CONTENTS
3
TABLE OF CONTENTS
PRODUCT INFORMATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
Models - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
Pump Sizing and Performance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
Generator Sizing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9
UNPACKING AND INSPECTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
Transportation and Storage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
Unpacking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
What’s in the Box - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10
INSTALLATION PLANNING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
Planning Considerations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
Standard Submersible Constant Pressure System - - - - - - - - - - - - - - - - - - - - - - - 12
Typical Surface Pressure Boosting Application - - - - - - - - - - - - - - - - - - - - - - - - 13
Shallow Well Surface Jet Pump Application - - - - - - - - - - - - - - - - - - - - - - - - - 14
Minimum Pressure Tank and Supply Pipe Sizing - - - - - - - - - - - - - - - - - - - - - - - 15
PHYSICAL INSTALLATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
Environmental Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
Mounting the Drive - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
Drive Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
ELECTRICAL INSTALLATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Wiring Guidelines - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Cable Routing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Branch Circuit Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Input Wire and Fuse Sizing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Output (Motor) Wire Sizing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
Conduit Locations and Sizing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
Power Wiring Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 21
Ground Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 21
Power Circuit and Motor Connections - - - - - - - - - - - - - - - - - - - - - - - - - - 22
Control Circuit Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 23
DRIVE CONFIGURATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
Motor Type Selection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
Franklin Electric 2-Wire Submersible Motor Series (DIP SW1 – Positions 1–7) - - - - - - - - 24
Submersible PSC Pumps (DIP SW1 – Position 6) - - - - - - - - - - - - - - - - - - - - - 24
Surface Pumps (DIP SW1 – Position 7) - - - - - - - - - - - - - - - - - - - - - - - - - - 24
Motor Voltage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
Maximum Amps (DIP SW1 – Positions 1–5) - - - - - - - - - - - - - - - - - - - - - - - - 25
Pressure Input Selection (DIP SW2 – Position 1) - - - - - - - - - - - - - - - - - - - - - - - 25
Adjusting Pressure Setting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 25
Performance Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27
System Response (DIP SW2 – Positions 2–4) - - - - - - - - - - - - - - - - - - - - - - - 27
Minimum Frequency (DIP SW3 – Position 8) - - - - - - - - - - - - - - - - - - - - - - - 27
Underload Sensitivity - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27
Steady Flow Selection (DIP SW3 – Position 1) - - - - - - - - - - - - - - - - - - - - - - 28
Tank Size and Bump Mode Adjustments - - - - - - - - - - - - - - - - - - - - - - - - - 28
Performance Enhancement for Long Cable Lengths - - - - - - - - - - - - - - - - - - - 28

TABLE OF CONTENTS
4
OPERATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Control Functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Monitoring Functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
Protection Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
Over Temperature Foldback - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
Motor Soft Start - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
Motor Overload Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
Broken Pipe Protection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
MAINTENANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
System Diagnostics Fault History - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
Diagnostic Fault Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32
Symptom Based Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34
Periodic Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
Fan Replacement - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
Screen Replacement - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
Firmware Updates - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37
Firmware Version Readout - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37
Firmware Update Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37
SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39
Common Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39
Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
Applicable Standards - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
STANDARD LIMITED WARRANTY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

SAFETY INSTRUCTIONS
Hazard Messages
5
SAFETY INSTRUCTIONS
Hazard Messages
This manual includes safety precautions and other important
information in the following formats:
IMPORTANT: Identifies information that controls correct assem-
bly and operation of the product.
NOTE: Identifies helpful or clarifying information.
This symbol alerts the user to the presence of dangerous
voltage inside the product that might cause harm or elec-
trical shock.
This symbol alerts the user to the presence of hot sur-
faces that might cause fire or personal injury.
Before Getting Started
This equipment should be installed and serviced by technically
qualified personnel who are familiar with the correct selection
and use of appropriate tools, equipment, and procedures. Failure
to comply with national and local electrical and plumbing codes
and within Franklin Electric recommendations may result in elec-
trical shock or fire hazard, unsatisfactory performance, or equip-
ment failure.
Read and follow instructions carefully to avoid injury and prop-
erty damage. Do not disassemble or repair unit unless described
in this manual.
Failure to follow installation or operation procedures and all
applicable codes may result in the following hazards:
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury.
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate personal injury.
Indicates a potentially hazardous situation
which, if not avoided could result in damage to
equipment or other property.
High voltages capable of causing severe
injury or death by electrical shock are
present in this unit.
• To reduce risk of electrical shock, disconnect power before
working on or around the system. More than one discon-
nect switch may be required to de-energize the equipment
before servicing.
• Make sure the ground terminal is connected to the motor,
control enclosures, metal plumbing, and other metal near
the motor or cable using wire no smaller than motor cable
wires.
Risk of bodily injury, electric shock, or
equipment damage.
• This equipment must not be used by children or persons
with reduced physical, sensory or mental abilities, or lack-
ing in experience and expertise, unless supervised or
instructed. Children may not use the equipment, nor may
they play with the unit or in the immediate vicinity.
• Equipment can start automatically. Lockout-Tagout before
servicing equipment.
• Operation of this equipment requires detailed installation
and operation instructions provided in this manual for use
with this product. Read entire manual before starting
installation and operation. End User should receive and
retain manual for future use.
• Keep safety labels clean and in good condition.

SAFETY INSTRUCTIONS
Product Specific Precautions
6
Product Specific Precautions
High voltages capable of causing severe
injury or death by electrical shock are
present in this unit.
• Do not remove VFD cover for wiring or periodic inspec-
tions while power is applied, or the unit is in operation.
• Capacitors inside the drive can still hold lethal voltage
even after power has been disconnected—ALLOW 5 MIN-
UTES FOR DANGEROUS INTERNAL VOLTAGE TO DIS-
CHARGE BEFORE REMOVING COVER OR WORKING WITH
INTERNAL COMPONENTS.
• Perform wiring after VFD has been mounted. Otherwise,
electric shock or bodily injury can occur.
• Do not apply power to a damaged VFD or to VFD with
missing parts.
• Do not use VFD if power or motor cable is damaged.
• Do not handle the VFD or control devices with wet hands
or when standing on a wet or damp surface, or in water.
Risk of damage to drive or other equipment.
• Install and wire product according to the instructions in
this manual.
• Take protective measures against ESD (Electrostatic Dis-
charge) before touching control boards during inspection,
installation or repair.
• This product is recommended for use with Franklin Elec-
tric 4-inch submersible motors as specified in this manual
(Refer to “Common Specifications” on page 39). Use of
this unit with any other Franklin Electric motor or with
motors from other manufacturers may result in damage
to both motor and electronics.
• In applications where water delivery is critical, a replace-
ment pressure sensor and/or back-up system should be
readily available if the drive fails to operate as intended.

PRODUCT INFORMATION
Description
7
PRODUCT INFORMATION
Description
The Franklin Electric SubDrive Utility is a variable frequency drive (VFD) designed to control and protect 2-
wire, single-phase motors with 115 or 230 volt ratings, enhancing pump performance for residential and
light commercial water system applications. When used with Franklin Electric motors ranging from 1/3 to 1
½ HP, the SubDrive Utility drives a motor and pump at variable speeds to maintain constant water pressure,
even as user demands (water flow) change.
The SubDrive Utility is also compatible with single-phase 2-wire submersible
split capacitor (PSC) motors, above-ground booster pumps, and jet pumps
with overload current ratings from 4.6 A to 13.1 A. *
The SubDrive Utility is designed to convert a conventional pump system to a
variable speed constant pressure system by simply replacing the pressure
switch.
Features
Configuration
• Compatible with submersible and surface pumps and motors *
• No programming required with easy DIP switch setup
• Pressure sensor or transducer included for ease of installation
• Additional input for optional transducer for more precise control
• Works with small pressure tanks or existing larger tanks
Operation
• Three LED indicators for system status and troubleshooting
• 35 – 63 Hz frequency range with submersible motors
• 40 – 60 Hz frequency range with surface motors
• Accessory filtering available to remove radio frequency interference
Protection
• Protection against short circuit, under-load, overload, overheat, under-voltage, over-voltage, surges,
open circuit
• Broken-pipe detection
• User-defined under-load sensitivity
• Soft-start feature prevents water hammer and increases motor life
Communication
• USB port allows for easy firmware updates
* Firmware version 1.3.1 or later is required to operate submersible PSC or surface pumps.

PRODUCT INFORMATION
Models
8
Models
Submersible Applications
Motor and pump HP are programmed through DIP switch settings. Refer to “Franklin Electric 2-Wire Sub-
mersible Motor Series (DIP SW1 – Positions 1–7)” on page 24.
Submersible PSC and Surface Applications
SubDrive Utility will operate many submersible PSC and Franklin Electric surface mounted pumps, including
C1, MH, BT4, DDS, and VersaJet series.
NOTE: Recommended for use on inverter duty rated motors. Follow motor manufacturer recommendations
for cable lengths when using variable frequency drives.
When operating a PSC or surface system, drives are configured based on motor current capacity rather than
horsepower. Motor current capacity is programmed through DIP switch settings. Refer to “Maximum Amps
(DIP SW1 – Positions 1–5)” on page 25.
Model Part Number 115 V 2-Wire 230 V 2-Wire
1/3 HP 1/2 HP 1/2 HP 3/4 HP 1 HP 1.5 HP
SubDrive Utility UT2W
- w/Pressure Sensor
5870202003 
SubDrive Utility UT2W
- w/Pressure Transducer
5870202003XD      
Model Part Number
115 or 230 V 2-Wire Motor Overload Protection Ratings (Amps)
4.6 4.7 5.0 6.0 6.2 6.4 8.1 8.4 9.1 9.5 9.8 10.
010. 411. 012. 013.1
SubDrive Utility UT2W
- w/Pressure Sensor
5870202003 
SubDrive Utility UT2W
- w/Pressure Transducer
5870202003XD                

PRODUCT INFORMATION
Pump Sizing and Performance
9
Pump Sizing and Performance
Maximum pump output using the drive is similar to the performance achieved using a pressure switch.
Therefore, the pump selection criteria are the same as if a pressure switch were used.
Refer to the Franklin Electric AIM Manual for specific sizing information.
If a pump and motor as described above are already installed in the system, and the well system compo-
nents are in good working order, no further system upgrades are required. However, if an existing pump and
motor have not been properly evaluated, or if the components of the well system are not in good working
order, the drive cannot be used to correct the problem or extend the life of aging components.
Generator Sizing
Basic generator sizing for the drive is 1.5 times the maximum input watts consumed by the drive, rounded
up to the next normal-sized generator.
Recommended minimum generator size for the SubDrive Utility is 6000 watts nominal.
IMPORTANT: Do not use with a Ground Fault Circuit Interrupter (GFCI). If using an externally regulated gen-
erator, verify that the voltage and hertz are appropriate to supply the drive. Not compatible with inverter-
controlled generators.

UNPACKING AND INSPECTION
Transportation and Storage
10
UNPACKING AND INSPECTION
Transportation and Storage
The drive should be stored in the shipping carton or crate before installation.
Unpacking
1. Inspect exterior of package for shipping damage. If there is damage, notify the shipping agent and your
sales representative.
2. Make sure the part number and product ratings on the identification label are correct for the applica-
tion.
3. Remove drive from the box and check for damage.
4. Remove the drive cover and make sure the product ratings on the nameplate match the package label.
What’s in the Box
1. Variable Frequency Drive (VFD)
2. Pressure Sensor (or Transducer) and Boot
3. Sensor Cable
4. Screwdriver/Adjustment Tool
5. Strain Relief Fitting
6. Owner’s Manual
Risk of damage to drive or other equipment.
• Do not stack drive boxes higher than standard 48” cube height when palleting for storage.
• Do not place heavy items on drive.
• Do not drop drive or subject it to hard impact.
• Dispose of drive properly as industrial equipment waste.
Risk of personal injury or damage to drive or other equipment.
• Use suitable lifting equipment, in good condition, rated for at least 5 times the weight of the drive.

INSTALLATION PLANNING
Planning Considerations
11
INSTALLATION PLANNING
Planning Considerations
STEP 1
Plan System
Goals
Intended Function:
Constant Pressure Water Systems
Pressure Boosting
Install
Wiring
STEP 5
Conduit Rules:
Routing
Separation
Power Connections:
Grounding
Inputs
Outputs
Control Circuits:
Feedback Inputs
STEP 3
Select
Control
Methods
Install VFD
Hardware
STEP 4
Location:
Inside
Outside
Climate Control:
Temperature
Moisture
Distance to the Well:
Wire Sizes
Filtering Requirements
Drive Size:
Clearance
Drilling
Program
Parameters
STEP 6 Basic Programming:
Application
Motor Ratings
Setpoints
I/O Setup:
Input Functions
Other Available Options:
Enable Features
STEP 2
Identify
Options
Type of Automation:
Bump Mode
Steady Flow
Hardware Application:
Submersible
Surface Pump
PSC Motors
Drawdown
System Response Desired Protection:
Broken Pipe
Underload
Overload
Run/Speed/Stop:
Pressure Sensor
Transducer
The planned usage of the overall
system will determine which options
and control methods are
appropriate, as well as how the VFD
should be installed and
programmed. Refer to the following
pages for examples of how the
system might be used.
System options define and automate
features that support the intended
operation. These features may
require specialized control methods
and programming. For more details,
refer to “Drive Configuration” on
page 24, and “Performance
Settings” on page 27.
The SubDrive Utility supports
several methods for automating
pump motor speed control. Refer to
“Drive Configuration” on page 24
for possible control setups.
The overall function of the system
directly affects where and how the
VFD should be mounted. Refer to
“Physical Installation” on page 16 for
guidelines.
The selected motor application,
along with the control method(s),
determines how the VFD should be
connected. Refer to “Electrical
Installation” on page 18 for more
information.
The VFD can be quickly and easily
programmed for most standard
operations. Refer to “Drive
Configuration” on page 24. Advanced
features or options may require
additional adjustments to achieve the
desired performance. Refer to
“Performance Settings” on page 27.

INSTALLATION PLANNING
Standard Submersible Constant Pressure System
12
Standard Submersible Constant Pressure System
The above drawing illustrates how a typical submersible pump system should be arranged for a constant
pressure application.
1. Pump and Motor Assembly: Refer to the Franklin Electric AIM Manual for pump, pipe, and cable sizing
information.
2. Check Valve
3. Pressure Relief Valve: Pressure relief valve must be able to pass full pump flow up to 100 PSI.
4. Pressure Tank: Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 15.
5. Pressure Gauge
6. Pressure Sensor or Transducer: Install in a vertical position after the pressure tank, and within 6 feet
(1.8 meters) of the tank to minimize pressure fluctuations. There should be no elbows between the tank
and sensor.
7. SubDrive Utility VFD
8. Power Supply from Circuit Breaker: Single phase, 115/230 VAC +/- 10%.
9. Power to Motor: Single phase.
Risk of bodily injury or property damage.
• Pumps can develop very high pressure in some situations. Always install a pressure relief valve able
to pass full pump flow up to 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full system flow.

INSTALLATION PLANNING
Typical Surface Pressure Boosting Application
13
Typical Surface Pressure Boosting Application
The above drawing illustrates how a typical surface mounted pump system should be arranged for a pres-
sure boosting application.
1. Water Supply
2. Check Valve
3. Ball Valve
4. Pressure Relief Valve: Pressure relief valve must be able to pass full pump flow up to 100 PSI.
5. Pressure Tank: Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 15.
6. Pressure Gauge
7. Pressure Sensor or Transducer: Install in a vertical position after the pressure tank, and within 6 feet
(1.8 meters) of the tank to minimize pressure fluctuations. There should be no elbows between the tank
and sensor.
8. SubDrive Utility VFD
9. Power Supply from Circuit Breaker: Single phase, 115/230 VAC +/- 10%.
10. Power to Motor: Single-Phase.
11. Optional Bypass: For system maintenance.
IMPORTANT: If the pump is equipped with a built-in pressure switch, the power wires from the VFD must
bypass the pressure switch and connect directly to the motor.
Risk of bodily injury or property damage.
• Pumps can develop very high pressure in some situations. Always install a pressure relief valve able
to pass full pump flow up to 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full system flow.

INSTALLATION PLANNING
Shallow Well Surface Jet Pump Application
14
Shallow Well Surface Jet Pump Application
The above drawing illustrates how a typical surface mounted jet pump system should be arranged for a con-
stant pressure application.
1. Well
2. Check Valve
3. Ball Valve
4. Pressure Relief Valve: Pressure relief valve must be able to pass full pump flow up to 100 PSI.
5. Pressure Tank: Refer to “Minimum Pressure Tank and Supply Pipe Sizing” on page 15.
6. Pressure Gauge
7. Pressure Sensor or Transducer: Install in a vertical position after the pressure tank, and within 6 feet
(1.8 meters) of the tank to minimize pressure fluctuations. There should be no elbows between the tank
and sensor.
8. SubDrive Utility VFD
9. Power Supply from Circuit Breaker: Single phase, 115/230 VAC +/- 10%.
10. Power to Motor: Single-Phase.
IMPORTANT: If the pump is equipped with a built-in pressure switch, the power wires from the VFD must
bypass the pressure switch and connect directly to the motor.
Risk of bodily injury or property damage.
• Pumps can develop very high pressure in some situations. Always install a pressure relief valve able
to pass full pump flow up to 100 psi.
• Install the pressure relief valve near the pressure tank and route to a drain capable of full system flow.

INSTALLATION PLANNING
Minimum Pressure Tank and Supply Pipe Sizing
15
Minimum Pressure Tank and Supply Pipe Sizing
A VFD system needs only a small pressure tank to maintain constant pressure, although a larger tank may
be used.
• If adding a drive to a system with an existing large tank, refer to “Tank Size and Bump Mode Adjust-
ments” on page 28.
• The pressure tank pre-charge setting should be 70% of the targeted system pressure.
Refer to the following recommendations for best performance.
Submersible Pump Applications with Franklin Electric 2-Wire Motor
A minimum tank size of 20 gallons is recommended. This is to ensure water is available during the minimum
off time of the motor. If a smaller tank is used, the tank may empty if a large water demand immediately fol-
lows a motor off cycle.
Submersible Pump Applications with PSC Motor
Surface Pump Applications
Minimum Supply Pipe Sizes
The minimum supply pipe diameter past the pressure sensor (transducer) should be selected not to exceed
a maximum velocity of 8 feet per second (2.4 m/s) based on the flow rate of the system.
IMPORTANT: Water system piping should be performed by an experienced professional to ensure adequate
flow.
Pump Flow Rating Minimum Tank Size
Less than 12 gpm (45.4 lpm) 2 gallons (7.6 liters)
12 gpm (45.4 lpm) and higher 4 gallons (15.1 liters)
Maximum Pump Flow Minimum Tank Size
10 GPM 2 gallons (7.6 liters)
20 GPM 4 gallons (15.1 liters)
30 GPM 6 gallons (22.7 liters)
40 GPM 8 gallons (30.3 liters)
Maximum GPM (lpm) Minimum Pipe Diameter
11.0 (41.6) 0.75”
19.6 (74.2) 1”
30.6 (115.8) 1.25”
44.1 (166.9) 1.5”
78.3 (296.4) 2”
122.4 (463) 2.5”
176.3 (667) 3”
240.0 (908) 3.5”
313.3 (1186) 4”
396.6 (1501) 4.5”
489.6 (1853) 5”

PHYSICAL INSTALLATION
Environmental Requirements
16
PHYSICAL INSTALLATION
Environmental Requirements
The drive is intended for operation in ambient temperatures from -13 °F to 122 °F (-25 °C to 50 °C). Use the
following recommendations when selecting a location to mount the drive:
• The drive electronics are air-cooled. Allow at least 6 inches (15.24 cm) of clear-
ance around the unit for air flow.
Special Considerations for Outdoor Use
The drive is suitable for outdoor use with a NEMA 3R rating; however, the following
considerations should be made when installing the controller outdoors:
• Mount the drive on a wall or back plate no smaller than the outer dimensions
of the enclosure in order to maintain the NEMA 3R rating.
• The unit must be mounted vertically with the wiring end oriented downward,
and the cover must be properly secured (also applies to indoor installations).
• NEMA 3R enclosures are capable of withstanding downward-directed rain
only. Protect from hose-directed or sprayed water as well as blowing rain. Fail-
ure to do so may result in drive failure.
• Install away from direct sunlight or locations subject to extreme temperatures or humidity.
• Use appropriate screening for the air inlet and outlet when installed in areas where insect or small ani-
mal intrusion is an issue. Refer to “Accessories” on page 40 for ordering information.
• Screens should be cleaned on a regular basis to ensure proper airflow.
Risk of damage to drive, or malfunction can occur due to improper handling,
installation, or environment.
• Handle with care to prevent damage to the plastic components.
• Do not mount VFD on equipment with excessive vibration.
• Install in a location where temperature is within the range of product rating.
• Mount VFD vertically (top up) for proper heat dissipation.
• Do not mount VFD in direct sunlight or near other heat sources.
• Do not install in corrosive environments.
• Install at least 18” (45.7 cm) above the ground
• Installation of non-approved screening may damage the drive and/or reduce output.
Cool air
Warm air
6 in min
(15.24 cm)
6 in min
(15.24 cm)
6 in min
(15.24 cm)
6 in min
(15.24 cm)

PHYSICAL INSTALLATION
Mounting the Drive
17
Mounting the Drive
The mounting location should have nearby access to an appropriate electrical supply and to the motor wir-
ing. Refer to “Electrical Installation” on page 18.
1. Mount the drive using the hanging tab on the top side of the enclosure.
2. Top screw should attach to a solid structure such as a stud or brace.
3. Secure the two (2) additional mounting holes on the back side.
4. All three (3) screw hole locations should be used to ensure the drive is securely mounted.
IMPORTANT: Do not drill holes in the drive.
Drive Dimensions
Risk of bodily injury or damage to drive or other equipment.
• The drive must be mounted on a structure such as a wall or post capable of supporting the weight of
the unit. Refer to “Specifications” on page 39 for drive weight.
• Install VFD on a non-combustible surface.
• Ensure suitable mounting hardware is used when installing the drive.
• Do not install the drive on unreinforced drywall.
• Use two persons when lifting the drive for transport or installation. If using lifting equipment, it must
be in good condition and rated for at least 5 times the weight of the drive.

ELECTRICAL INSTALLATION
Wiring Guidelines
18
ELECTRICAL INSTALLATION
Wiring Guidelines
Follow the recommendations in this section to ensure best performance of the SubDrive Utility and to avoid
interference with other devices.
Cable Routing
Use the above diagram as a guide when routing wiring to VFD.
1. Mount the drive as close as possible to the service entrance panel. Wire directly to the service entrance.
Do not connect to a sub-panel.
2. Use a dedicated branch circuit for the drive. Refer to “Branch Circuit Protection” on page 19.
3. Route motor wiring out of building as soon
as possible. Separate input power and
motor wiring by at least 8 in. (20.3 cm).
Refer to “Output (Motor) Wire Sizing” on
page 19.
4. Cross over other branch circuits and facility
wiring at a 90 angle. If it is necessary to
run wiring in parallel, separate by at least 8
in. (20.3 cm).
5. All control wiring—sensors, switches, trans-
ducers, etc.—should be in a separate con-
duit routed individually, not parallel, from
high voltage wiring. In addition, any
shielded cables should be properly
grounded.
Risk of damage to VFD, or malfunction can occur.
Follow all wire routing and grounding instructions carefully. Inductive currents caused by parallel wiring,
or close proximity between high voltage and control wiring can cause unexpected behaviors.
• Do not run input power and motor wires in the same conduit.
• Do not run motor wires from multiple VFDs in common conduit.
• Do not run control wiring parallel with high voltage wiring.
• Do not run VFD wiring parallel with building or facility wiring.
• Do not use aluminum wires for VFD connections.
• Do not install a magnetic contactor or disconnect in the motor circuit.
• Do not use with a Ground Fault Circuit Interrupter (GFCI).
• Do not leave wire fragments, metal shavings or other metal objects inside the VFD.
• Improper splicing or damage to motor cable insulation may expose the conductor(s) to moisture and
can produce motor cable failure.
• For retrofit application, make sure to check the integrity of power and motor leads. This requires
measuring the insulation resistance with a suitable megohm-meter.
2
13

ELECTRICAL INSTALLATION
Wiring Guidelines
19
Branch Circuit Protection
Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protec-
tion must be provided in accordance with the National Electrical Code and any additional local codes, or the
equivalent. Drive shall be protected by fuse or inverse-time circuit breaker only, rated 300 V, and a maxi-
mum 300% of full load motor output current rating as noted in the table below.
Input Wire and Fuse Sizing
1 Based on a 3% voltage drop.
* 90 C Insulation only.
NOTE: Minimum breaker amps may vary from AIM Manual specifications because of VFD characteristics.
Output (Motor) Wire Sizing
1 Based on a 5% voltage drop with 1000 ft limit.
Notes:
• The use of 600 V minimum rated motor cable is required.
• Maximum allowable wire lengths are measured between the controller and motor, based on AIM Man-
ual requirements with 1000 ft limit. Larger wire and filtering are required if exceeding the 1000 ft limit.
• Flat-jacketed submersible motor cable is recommended. All splices in the motor cable must be properly
sealed with watertight shrink tubing. Use extreme caution to avoid damaging or compromising the
motor cable insulation during installation or service.
• For motor cable lengths over 300 ft, refer to “Performance Enhancement for Long Cable Lengths” on
page 28.
Model Input
Voltage Motor HP Fuse/Breaker Amps
AWG Copper Wire Sizes, 75° C Insulation, and Panel to Drive Cable
Lengths (in feet)1
14 12 10 8 6 4 3 2 1
SubDrive
Utility
115 1/2 (0.37
kW)
15 40*60 100 155 245 390 485 635 805
230 1/2 (0.37
kW)
15 130 205 340 525 835 1315 1635 2150 2720
230 3/4 (0.55
kW)
15 130 150 250 390 620 975 1210 1595 2020
230 1.0 (0.75
kW)
20 70*110*185 285 450 715 885 1165 1475
230 1.5 (1.1 kW) 25 – – 140 215 340 540 670 880 1115
Model Motor Family Motor
Voltage Horsepower
AWG 600V Copper Wire Sizes, 75° C Insulation, and Motor Cable
Lengths (in feet)1
14 12 10 8 6 4
SubDrive
Utility
244 502 xxxx 115 1/3 (0.25 kW) 100 160 250 390 620 960
244 504 xxxx 115 1/2 (0.37 kW) 100 160 250 390 620 960
244 505 xxxx 230 1/2 (0.37 kW) 400 650 1000 – – –
244 507 xxxx 230 3/4 (0.55 kW) 300 480 760 1000 – –
244 508 xxxx 230 1.0 (0.75 kW) 250 400 630 990 – –
244 509 xxxx 230 1.5 (1.1 kW) 190 310 480 770 1000 –

ELECTRICAL INSTALLATION
Wiring Guidelines
20
Conduit Locations and Sizing
Use appropriate strain relief or conduit connectors.
1. Incoming power supply—Hole = 0.88 in. (22.2 mm)
2. Power output to motor—Hole = 0.88 in (22.2 mm), Knockout = 1.11 in. (28.2 mm)
3. Control wiring (transducer/sensor) input—Hole = 0.5 in. (12.7 mm)