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5. Electrical installation
Warning
All electrical work should be
performed by a qualified electrician
in accordance with the latest
edition of the National Electrical
Code and local codes or
regulations.
Warning
The safe operation of this pump
requires that it be grounded in
accordance with the National
Electrical Code and local codes or
regulations.
Warning
The ground conductor should be a
copper conductor of at least the
size of the circuit conductor
supplying power to the pump.
Minimum ground conductor size is
14 AWG. Connect the ground
conductor to the grounding point in
the terminal box and then to an
acceptable ground.
Warning
Do not ground to a gas supply line.
Warning
For fig. 3, some pump models may
come with two access wiring ports
(cable entries) to the terminal box.
To ensure safe operation of your
installation, the enclosed terminal
box cap (blanking) plug MUST be
inserted into the unused wiring
access port (cable entry).
The proper operating voltage and other
electrical information can be found on the
nameplate attached to the top of the motor.
Depending on pump model, the motor has either
built-in, automatic, resetting of thermal
protection or is impedance protected and in
either case does not require additional external
protection. The temperature of the windings will
never exceed allowable limits, even if the rotor is
locked.
Wire sizes should be based on the ampacity
(current-carrying properties of a conductor) as
required by the latest edition of the National
Electrical Code or local regulations.
Both the power and grounding wires must be
suitable for at least 194 °F (90 °C).
If rigid conduit is to be used, the hub must be
connected to the conduit system before it is
connected to the terminal box of the pump.
8
5.1 For all 115 V and 230 V models
5.1.1 Single-speed pump wiring
1. Connect the white/white electrical leads from
the circulator pump to the incoming power
leads with wire nuts or other approved
connectors.
2. Attach incoming grounding wire to either of
the green grounding screws.
Green
grounding
screws
Capacitor
Fig. 3
Wiring diagram for all 115 V and
230 V single-speed pumps.
5.1.2 Multi-speed pump wiring
1. Insert black conductor into terminal "L"
position.
2. Insert white conductor into terminal "N"
position.
3. Insert grounding conductor into terminal
"
" position.
1 2 3 4 5 6 7 8
Fig. 4
Wiring diagram for 115 V and 230 V
multi-speed pumps*
* UP(S) 15 capacitor wire position 4 & 8;
UP(S) 26/43/50 capacitor wire position 2 & 4.
6. Startup
Do not use the pump to vent the
system.
Do not start the pump before filling
the system.
Never let the pump run dry.
White
line
leads
Ground
Green
ground
Neutral
Line
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