Instruction Manual
This connection does not require any adjustment. Whenever
the installation position of the pump is higher than 3ft above the
lowest water level, a foot valve must be installed on the end of
suction pipe.
WARNING
The pump is not designed for continuous operation under low
discharge ows such as slow closing oat valves, slow
running taps. Under this application, please install an extra
tank ( typically 2-3 gallon ) to avoid “cycling”. (Fig 5)
Please set the extra pressure tank prussure the same as
activation pressure. Leaking discharge line and leaking taps will
damage the unit through causing the pump to repeatedly start
and stop.
Note: Optional external water pressure tank can be used
to decrease the on/o cycle rate of the pump system,
which can extend the life of the pump.
Directly applied city pressure can exceed pump operating pressure and damage the pump. The
max inlet pressure should not exceed 50 psi, except TQ3700 which is limited to 45 PSI. Any
greater incoming pressure is required to install a pressure reducing valve on the suction side of the
pump. In some areas where local codes restrict maximum home pressure, a pressure reducing
valve is also required on suction to lower the inlet pressure. The chart below shows the applicable
settings for the pressure reducing valve :
Check Valve
Check Valve
Isolation Valve
Union
Relief valve
To Drain
(Optional)
Pressure reducing valve
2. Flooded Suction -from city water supply
Local code limits for
home pressure
No limit
90 psi
80 psi
Pressure reducing valve setting (psi)
TQ200
50
50
45
TQ400
50
50
40
TQ800
50
25
15
TQ1500
50
30
20
TQ2200
50
30
20
TQ3700
45
20
10
3. Suction Lift- below ground water sources
This connection does not require any adjustment. Whenever the installation position of the pump
is higher than 3ft above the lowest water level, a foot valve must be installed on the end of suction
pipe.
Warning
The pump is not designed for continuous operation under
low discharge flows such as slow closing float valves, slow
running taps. Under this application, please install an extra
tank ( typically 2-3 gallon ) to avoid “cycling”. (Fig 6)
Please set the extra pressure tank prussure the same as
activation pressure. Leaking discharge line and leaking
taps will damage the unit through causing the pump to
repeatedly start and stop.
Note: Optional external water pressure tank can be used
to decrease the on/off cycle rate of the pump system,
which can extend the life of the pump.
Fig. 5
Extra Pressure Tank
pipe tee
Fig. 6
Directly applied city pressure can exceed pump operating pressure and damage the pump.
The maximum inlet pressure should not exceed 45 PSI. Any greater incoming pressure is required to install a pressure
reducing valve on the suction side of the pump. In some areas where local codes restrict maximum home pressure,
a pressure reducing valve is also required on suction to lower the inlet pressure.
2. FLOODED SUCTION- FROM CITY WATER SUPPLY
Directly applied city pressure can exceed pump operating pressure and damage the pump. The
max inlet pressure should not exceed 50 psi, except TQ3700 which is limited to 45 PSI. Any
greater incoming pressure is required to install a pressure reducing valve on the suction side of the
pump. In some areas where local codes restrict maximum home pressure, a pressure reducing
valve is also required on suction to lower the inlet pressure. The chart below shows the applicable
settings for the pressure reducing valve :
2. Flooded Suction -from city water supply
Local code limits for
home pressure
No limit
90 psi
80 psi
Pressure reducing valve setting (psi)
TQ200
50
50
45
TQ400
50
50
40
TQ800
50
25
15
TQ1500
50
30
20
TQ2200
50
30
20
TQ3700
45
20
10
3. Suction Lift- below ground water sources
This connection does not require any adjustment. Whenever the installation position of the pump
is higher than 3ft above the lowest water level, a foot valve must be installed on the end of suction
pipe.
Warning
The pump is not designed for continuous operation under
low discharge flows such as slow closing float valves, slow
running taps. Under this application, please install an extra
tank ( typically 2-3 gallon ) to avoid “cycling”. (Fig 6)
Please set the extra pressure tank prussure the same as
activation pressure. Leaking discharge line and leaking
taps will damage the unit through causing the pump to
repeatedly start and stop.
Note: Optional external water pressure tank can be used
to decrease the on/off cycle rate of the pump system,
which can extend the life of the pump.
Fig. 5
Extra Pressure Tank
pipe tee
Fig. 6
Extra
Pressure
Tank
Pipe Tee
Fig. 5Fig. 5
6
INSTRUCTIONS CONT.
Home SupplyWater main
Check Valve
Check Valve
Union
(Optional)
Pressure Reducing Valve
Isolation Valve
Relief Valve
Relief Valve
To Drain
Fig. 4Fig. 4
3. SUCTION LIFT- BELOW GROUND WATER SOURCES