Grundfos Medium UPM Series Data Booklet page 28

8
Power supply connection
The pump can be connected to the power supply in
different ways, depending on the model.
Pumps above 140 W power consumption (UPMXL,
UPMXXL) are supplied with mounted short high-
temperature resistant cables with external NTC box
plus different adapters for MOLEX, VOLEX or TE
Superseal supply cables to reduce the inrush level to
the specified one.
Fig. 42 Superseal NTC cable with plug
Alternative pumps are available with mounted power
cables (1 m and 2 m) with NTC but without connector.
Product
UPMXL connector cable with external NTC box
number
98937821 UPMXL cable with NTC 280 mm + Molex plug
98937822 UPMXL cable with NTC 245 mm + Volex plug
99064400 UPMXL cable with NTC 315 mm + Super seal
98937820 UPMXL NTC cable 1000 mm 3G 0.75 moulded
98937819 UPMXL NTC cable 2000 mm 3G 0.75 moulded
Pumps up to 140 W power consumption have
integrated NTC to reduce to the specified inrush level
of the chosen variant. These pumps can be delivered
with mounted plug connector like MOLEX, VOLEX or
TE Superseal. An additional NTC adapter cable can
reduce the inrush level additional by approx. 4 A.
Product
UPML plug connector mounted at the control box
number
UPML Molex 90 ° connector vertical towards name
98428087
plate
UPML Molex 270 ° connector vertical towards pump
98431661
housing
98428090 UPML Volex 90 ° connector towards name plate
98492211 UPML Volex 270 ° connector towards pump housing
98585906 UPML Superseal 90 ° connector towards name plate
Note: All cables and connectors used must comply
with EN 60335-1.
28
Description
Line/phase:
Neutral: N (blue)
Protective earth:
Molex 3-pin plug
(yellow and green)
Line/phase: L (brown)
Protective earth:
Volex plug
(yellow and green)
Protective earth:
(yellow and green)
Neutral: N (blue)
Superseal plug
Signal cable
Medium UPM AUTO pumps are internally speed-
controlled and have no signal cable connection. We
recommend to order these pump types with signal
blind plug. Medium UPM PWM/LIN pumps are
externally speed-controlled. To enable pump control, a
signal cable is required, otherwise the pump always
runs at maximum speed (profile A for heating).
SOLAR PML pumps do not run without
signal (PWM profile C for solar).
The signal cable has three leads, signal input, signal
output and signal reference. The cable must be
connected to the control box by a Dubox housing with
a FCI terminal block and terminals. The optional signal
cable can be supplied with the pump as an accessory.
The cable length is customised to specific
requirements (maximum 3 metres).
The installation of a ferrite core around the cable is not
necessary.
Connect the signal wires to the correct
poles. Otherwise the pump might be
damaged.
Medium UPM
Plug connection
L (brown)
Neutral: N (blue)
Line/phase:
L (brown)