6.1 Heat exchanger connection
6.1.1 General notes
Before connecting the heat exchanger, the piping system must be rinsed thoroughly.
To prevent damage of the heat exchanger connection, it is necessary to hold
against with a pipe wrench during the screwing (Figure 97).
Figure 97: Holding against with a pipe wrench
An absolutely stress-free connection has to be ensured and the transmission of
vibrations and longitudinal expansion between the device and the piping system
must be safely prevented.
The piping of the heat exchanger should hinder a for maintenance required expansion of the heat
exchanger as less as possible.
Recommended sealing material for threaded sleeves:
- Steam heat exchanger, use special sealant
- Water / glycol heat exchangers, use Teflon tape.
In these cases, hemp cannot be used as sealing material!
The connection of the heat exchanger is to execute as indicated on the label on the AHU (connec-
tion diagrams in Figure 98).
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