Transport/Storage; Characteristics, Intended Use; Operating Temperature/Operating Pressure; Installation And Assembly - ITT A 402 Serie Instructions D'installation Et D'entretien

A_AD 16.05.2007 8:22 Uhr
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2. Transport/storage

The pumps are delivered ex works in suitable packaging.
Pumps with electronic components must
Warning
be protected from moisture.

3. Characteristics, intended use

The circulating pumps of the series
A 402, A 402-1, A 501, A 502, A 651, A 652
AD 402-1, AD 501, AD 502, AD 651, AD 652
Motors are set up for synchronous operation with a permanent
magnet rotor as canned motor. Integrated frequency converter with
control system based on ∆p – proportional or constant pressure.
Used to pump fluids in:
– Hot water heating systems
– Closed industrial circulation systems
For limited applications for hot water supply below 18°fH;
below that, we recommend dry-running pumps
Heating water in accordance with VDI 2035; water/glycol mixture
with up to 50% glycol. The pumps must not be used in the
foodstuffs industry and are of limited use for drinking water.

3.1 Operating temperature/operating pressure

Admissible water temperature:
Admissible operating pressure:
Ambient temperature:
Noise level:
Degree of protection:

4. Installation and assembly

4.1 Flushing out the heating system (with pump removed)
In order to avoid undesirable interruptions in operation
and non-starting of the pump after long periods of standstill,
it is recommended for a newly-installed or converted heating
system that the system be drained, flushed through well
and then refilled again after heating up for the first time.
The system must comply with the latest state of technology.
(Positioning of expansion vessel or initial safety feed.)
4.2 Antifreeze (where necessary)
mportant: Rinse the piping especially thoroughly before filling
with the antifreeze mixture. Follow the instructions
of the supplier of the antifreeze concerning mixing, filling,
and the selection of materials in the line and device network
(mind the corrosion protection!).
The water / glycol mixture may contain up to 50% glycol.
Correct the flow data for the pumps accordingly if there
is more than 10% glycol.
+15 °C to +95 °C
(110 °C for brief periods)
max. 16 bar
max. 40 °C (see cap. 10, page 80)
< 70 dB (A)
IP 42