Piping Instructions; Electrical Connections - Franklin Electric BT4 Series Owner's Manual

INSTALLATION

Piping Instructions

Piping Instructions
• Properly support all suction and discharge piping to avoid strain on the pump.
• Piping should match the pump inlet and outlet connection sizes.
• For long runs, increase connections by one pipe size to avoid friction losses.
• The use of pipe thread sealant is recommended.
• Avoid the use of unions on the suction line if possible. All suction line connections must be airtight.
• Do not over-tighten piping connections.
Suction Line
Suction Lift Applications
NOTE: The total suction lift should not exceed 10 ft.
1. Install a new, clean pipe or hose, making sure piping rises vertically or is sloped continually upward
from the water source to the pump inlet connection with no high spots that cannot be evacuated of
air during the priming process.
2. A tee with a removable priming plug is recommended at the pump inlet when the pump is installed
horizontally.
3. Install a foot valve to the end of the suction line to ensure system remains filled during off periods.
Booster/Flooded Suction Applications
1. Install an isolation ball or gate valve between the water source and the suction inlet to facilitate
future servicing.
• When not servicing the pump, keep this valve wide open to allow flow to the pump.
2. Install backflow prevention devices as required by code.
Discharge Line
1. Tighten the discharge pipe, using an opposing pipe wrench on the pump discharge.
2. Install a check valve to avoid the back-up of high pressure flow.
• All discharge piping must have a pressure rating capable of withstanding the incoming inlet
pressure plus the pump's maximum shut-off head pressure.
IMPORTANT: The pump should not be operated under a no-flow/shut-off head condition to avoid
high pressure and pump damage.
3. Install a bypass line from the pump discharge back to the pump suction to provide a recirculation
path for the brief periods between closing off the discharge and turning off the pump.

Electrical Connections

Risk of severe injury or death by electrical shock.
• To reduce risk of electrical shock, disconnect power before working on or around the system.
1. An electrician should be employed to do the wiring.
2. It is recommended that a separate circuit be provided from the distribution panel to the pump unit,
properly protected with a fuse or circuit breaker.
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