Igema TG32, Assembly And Operating Manual, Page: 16 / 28

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Tightening sequence to be observed for the cover rails is presented
below!
Non-compliance may result in leakage, glass and mica break.
The following tightening sequence must be ensured at the cover rails (drawing below). Non-
compliance can lead to leaks, which are not covered by the warranty. In the first step with 1.
Md=20 Nm, in the second step with 2. Md=40 Nm and in the third and last step with 3.
Md=65 Nm.
odd number even number
At the latest 24 h after commissioning, the screw connections must be checked and tightened
again with the torques specified above in the listed tightening sequence due to material
settlements that cannot be ruled out! This should be repeated until the bolts permanently hold
the specified torques.
The union nuts of the valves must be tightened so that no leakage occurs at the spindle and
the handwheel / hand lever can still be turned.
Note!
After commissioning, slight leaks can occur in the valves, but these will reappear
after a short time due to temperature and pressure.
7.2 Commissioning the indicator at the same time as the boiler
First make sure that the drain valve (18) is closed. Then open the shut-off
valves (A1, B1) to the stop. The boiler can now be commissioned with the
indicator. After commissioning the indicator must be checked for function
and leakage. The specified torques and the described tightening
sequence (point 7.1) apply.
Caution
Caution
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