Behncke PWT 510 Instrucciones De Operación página 65

Heat exchanger PWT 510 / PWT 910 / Installation and first start-up
5.3 Basic information on assembly
1. Install the heat exchanger in a vertical position with adequate free space all around (see chapter 3.1),
especially in front of the loose plate, so that the device can be accessed for any maintenance work.
It's not advisable to assemble the heat exchanger as in figure 6 b), c) and d) (this applies primarily to the
heat exchanger with embossed plates, which do not have crossed connectors) as air bubbles (or other
hard-to-ventilate, non-condensable media), which reduce exchange coefficients and increase pressure
loss, may form.
2. Please observe the flow diagram (see chapter 1.8) for connecting the primary and secondary circuit.
3. Only use suitable materials for the connection. The manufacturer is not liable for corrosion resulting
from choosing the wrong material. (Only stainless steel screws (no brass screws) may be used on the pool
side.)
4. Stop valves are to be provided for all connecting lines to the heat exchanger.
5. Circulation pumps with appropriate properties are to be installed on the primary and secondary circuits.
When producing service water (without purification), you must ensure that the heat exchanger cannot heat
up outside of operation. For this purpose, a thermostat can be fitted that stops the pump and a retention
valve that switches off the circulation of any remnants. In the event of return flow, a modulation valve must
be installed at the primary circuit, controlled by a probe on the secondary circuit, so that a temperature of
50°C is not exceeded.
6. For very dirty fluids, a filter must be used before they enter the heat exchanger.
7. Filters can only be done away with if the circuits have been rinsed through sufficiently.
8. Adequate drainage (safety floor drain) must be provided near the heat exchanger so that the room is not
flooded when fluids escape. (If a lifting pump is needed, secure it separately from the pump.)
9. No forces may be transferred to the heat exchanger connectors (anchor the pipelines to the walls
accordingly).
a)
b) d)
c)
YES NO NO NO
Figure 6: Installation options
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