Applications; Pumped Liquids; Mechanical Installation - Grundfos TPE2 D Manual Del Usuario

7. Applications

The pumps are designed to circulate hot or cold water in
residential, institutional and industrial applications:
• heating systems
• district heating plants
• central heating systems for blocks of flats
• air-conditioning systems
• cooling systems.
In addition, the pumps are used for liquid transfer and water
supply in for instance:
• washing systems
• domestic hot-water systems
• industrial systems in general.
To ensure optimum operation, the dimensioning range of the
system must fall within the performance range of the pump.

7.1 Pumped liquids

WARNING
Contact with hazardous liquids
Death or serious personal injury
- If the pump is used for a liquid which is injurious to
health, it will be classified as contaminated. In
such cases, take proper precautions to avoid injury
to health when operating or working on the pump.
- Wear personal protection equipment.
The pump is suitable for thin, clean, non-aggressive and
non-flammable liquids, not containing solid particles or fibers that
may attack the pump mechanically or chemically.
Examples:
• Central heating system water. The water must meet the
requirements of accepted standards on water quality in
heating systems.
• Cooling liquids.
• Domestic hot water.
• Industrial liquids.
• Softened water.
The pumping of liquids with a density and/or kinematic viscosity
higher than that of water will have the following effects:
• a considerable pressure drop
• a drop in hydraulic performance
• a rise in power consumption.
The EPDM O-rings fitted as standard are primarily suitable for
water.
If the water contains minerals, synthetic oils or chemicals or other
liquids than water are pumped, choose the O-rings accordingly.
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8. Mechanical installation

WARNING
Hot or cold surface
Death or serious personal injury
- Maker sure that no one can accidentally come into
contact with hot or cold surfaces.
In order to maintain the UL mark, additional
requirements apply to the equipment. See Appendix
on page 208.
Install the pump in a dry well-ventilated, but frost-free position.
When installing pumps with oval bolt holes in the pump flange,
use washers as shown in fig. 3.
Washer
Fig. 3 Use of washers for oval bolt holes
Arrows on the pump casing show the direction of flow of liquid
through the pump.
You can install the pump in horizontal or vertical pipes.
The motor must never fall below the horizontal plane.
For inspection and removal of motor or pump head, a clearance
of 11.81" (300 mm) is required above the motor. See fig. 4.
11.81 " [ 300 mm]
Fig. 4 Required clearance above the motor
Installation
Pump