IMP Pumps NMT(D) SMART (C) - Manual (Page 15)

-15-
GB
1. Use
The NMT SMART pumps are intended for forced circulation of the medium in
central heating systems. The pump constantly measures pressure and flow,
and adapts the speed to the selected pressure.
2. Medium types
A medium that is pure water or a mixture of pure water and antifreeze, which
is appropriate for a central heating system, must be provided. The water
must meet water quality standards, such as: VDI 2035. The medium must
be free from aggressive or explosive additives, free from mixtures of mineral
oils and solid or fibrous particles. The pump should not be used for pumping
flammable, explosive media, and in an explosive atmosphere.
Permitted ambient and media temperature:
Ambient
temperature [°C]
Media temperature
min. [°C] max. [°C]
0 to 25 2 110
30 2 100
35 2 90
40 2 80
Operation outside recommended conditions may shorten pump lifetime and
void the warranty.
3. Installation
The pump must be mounted so that the electric motor axis is in a horizontal position
(see Figure 3.1). The permitted and prohibited positions are shown in Figure 3.2.
The arrow on the hydraulic part indicates the direction of the medium flow.
If there is not enough space for an electrical connection, the electric motor
part can be rotated so that the electrical connector is in a horizontal position.
A position with the electrical connector vertically above the motor is not
permitted (see Figure 3.3c). Before we must close the block valve on the
pressure and suction side of the pump and unscrew the screws (Figure 3.3).
We can turn the electric motor part as shown in Figures 3.3a or 3.3b.