Overview of Primary Product

6
General data
VersaFlo UP, UPS
Applications
Grundfos circulator pumps, types VersaFlo UP, UPS are
designed for circulation of liquids in heating and air-
conditioning systems. Pumps with bronze pump hous-
ings are suitable for circulation in domestic hot water
systems.
VersaFlo UPS pumps are a complete line of circulator
pumps with three speeds.
The pumps come both as single and dual-head pumps.
Speed switch
The pump offers three speeds for adjustment of pump
performance to the system in question.
The speeds of the various speed switch positions are
shown in the table below:
Speed Selection (two speed, 3x460V & 575V)
The speed setting in the terminal box can be changed to
two positions. The speed in the two positions appears in
the table below
Change to a lower speed enables reduction in energy
consumption and less noise in the system.
Pumps with protection module (standard)
Protection module
The protection module is supplied as standard for single-
head and dual-head pumps.
With a protection module, the pump can be connected
directly to line voltage, as the built-in protection against
overheating protects the pump at all three speeds.
Furthermore, the module has two indicator lights.
Protection module indicator lights
The function of the indicator lights is shown in the table
below.
Note: Pumps with protection module must not be
connected to a frequency converter.
TM00 9247 4595
Switch position
Speed in % of maximum speed
Single-phase pumps Three-phase pumps
1 approx. 60% approx. 70%
2 approx. 80% approx. 85%
3 100% 100%
Speed Step Speed in % of Maximum
1 approx. 75%
2100%
TM00 9747 0602
H
Q
12
Q
H
H
Q
3
Indicator lights and
speed indication
TM01 3879 4798
Indicator lights
Description
Green Red
Off Off
The pump has been stopped.
The electricity supply has been switched off, ther-
mally cut out or a phase is missing.
On Off The pump is operating.
On On
Three-phase pumps only: (not 460V, 575V)
The pump is operating, but the direction of
rotation is not correct.
Off On The pump is cut out by the thermal switch.