Franklin Electric BT4 Serie Guide D'utilisation page 3

When installing outside of the house, but within an
enclosed structure (like a pump house) the pump
should be protected with auxiliary heat to prevent
possible freezing.
OUTDOOR PUMP INSTALLATION OPTION
NOTICE: ONLY 1/3 -2 hp BT4 BOOSTER PUMP/
MOTOR ASSEMBLIES ARE CERTIFIED FOR
OUTDOOR USE.
Choose a clean location best suited for the water system
required. A prepared foundation is not essential, provided
the surface is hard and level (FIGURE 4). It should provide
access for servicing and allow convenient draining of the
pump, tank, and service pipes. When installing outside of
the house, the pump and piping system must be drained
completely of water to prevent possible freezing.
NOTICE: When the BT4 pump is used to draw water
from a water source below the pump, the required lift
should not exceed 10 feet. If the water is being lifted
from a well, decide how to seal the well from surface
contamination required by local authorities. The most
common device for this purpose is the sanitary well seal.
Pipes from the well should be kept below the frost line.
Either bury the wellhead or use a pitless adapter that
leaves the wellhead exposed for servicing to provide
sealed openings in the well casing below the frost line.
FIGURE 1 - PUMP INSTALLATION USING MUNICIPAL SOURCE
Street Supply
Valve (normally open)
Check Valve
Union
Booster Pump
Pump used in boost incoming pressure
from city supply (Automatic Operation)
FIGURE 2 - PUMP INSTALLATION USING WALL HYDRANT OR FAUCET
Wall Hydrant
High Pressure Reinforced Hose
Hose Adapter
Booster Pump
Spray Nozzle
High Pressure Reinforced Hose
Union
Check Valve
Pressure Gauge
Service Tee
Inlet
Pressure Tank
Valve (normally open)
Pressure Gauge
Outlet
Union
Pressure Relief Valve
Pressure Switch
Drain Valve
Pump used in boost incoming pressure
from wall hydrant (Manual Operation)
Pressure Gauge
Service Tee
Discharge Outlet
Suction Inlet
Pressure Relief Valve
Hose Adapter
FIGURE 3 - PUMP INSTALLATION VERTICAL ON WALL
To Power
Male Pipe to Male Hose Adapter
Male Pipe to Male
Hose Adapter
(Discharge)
Female Hose
Connection
Figure 4 – Wall mounted to pressurized service line.
FIGURE 4 - PUMP INSTALLATION DRAWING WATER FROM BELOW PUMP
Priming Plug
To Power
Water Supply
FIGURE 3 - PUMP INSTALLATION VERTICAL ON WALL
PLUMBING, PIPING, AND HOSES
In general, keep the suction and discharge lines as large
as possible. Avoid using bends, elbows, and fittings
To Power
whenever possible. All suction connections must be
Union
airtight, so use pipe compound on all threaded joints.
Always use a suction strainer when applicable to prevent
solids and foreign matter from being drawn into the pump.
NOTICE: If an elbow is needed on the suction port a
Male Pipe to Male Hose Adapter
short radius (SR) elbow must be used as a standard 90°
will interfere with the handle of the BT4. A service tee is
also recommended.
Male Pipe to Male
Hose Adapter
HORIZONTAL OFFSET SUCTION PIPING
(Discharge)
Female Hose
When the pump is offset from the well, the horizontal
Connection
offset suction piping may have to be increased in
diameter to reduce friction loss. The friction loss in a
system increases:
1. As the flow rate increases
Figure 4 – Wall mounted to pressurized service line.
2. As the piping size decreases
Refer to the included BT4 performance tables (Appendix
1) and friction loss tables (Appendix 2) to determine the
amount of head lost for a given application. Pipes from
the well to the pump should slope upward (about 1" of
rise for every 30" of run).
Gun Nozzle
Weeping Type ONLY
Foot Valve
Service Line
Gate Valve or Hose Bibb
Male Pipe to Male Hose Adapter
High Pressure Hose with two
Female Connections
(Suction)
Gun Nozzle
Weeping Type ONLY
High Pressure Hose
Tee
90 Elbow
Male Pipe to Male Hose Adapter
Female Hose Connection
High Pressure
10 Feet
Hose
Maximum
Male Hose
Connection
Gun Nozzle
Weeping Type ONLY
Foot Valve
Service Line
Gate Valve or Hose Bibb
Male Pipe to Male Hose Adapter
High Pressure Hose with two
Female Connections
(Suction)
Gun Nozzle
Weeping Type ONLY
High Pressure Hose
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