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THERM CONNECT basic
06
WOLF run around coil systems
06.03 Commissioning
06.03.01 Filling the system
Checking before filling the system
Before filling the hydraulic control group, check the following parameters
• Proper installation of all parts
• Vent valve installed at the highest point of piping
• Flow direction at valves, pumps, etc.
• Installation position of valves, etc.
• Connection of heaters, coolers in counterflow principle (otherwise considerable power losses will occur!)
• Tight fit of all connections (screwed connections, flanges, etc.)
• Smooth running of valves, slide valves, actuators
• Hydraulic lines must be flushed and cleaned
Attention! When filling and venting the system, there is a risk of injury due to
• Escaping pressure jet
• Scalding with hot heating media
• Burning in case of skin contact with antifreeze additives
Filling and bleeding
Fill hydraulic control group slowly - vent carefully. During the filling process, open the venting valve. During the fill-
ing process, check all connection points for leaks, eliminate them if necessary. After reaching the system pressure on
the medium side, close the venting valve.
Attention
When opening the venting device of the run around coil system, the plant must be switched off. Secure the main
switch! The liquids, e.g. water-glycol mixture (-20°C to 40°C), are under pressure and can thus escape abruptly.
Personal protective equipment such as suitable goggles and gloves must be worn or the manufacturer's instructions
must be observed.
06.03.02 First test run
Tighten all clamping points of the electrical system!
During commissioning, ensure that the system is not operated beyond the limits specified in the design data.
Improper operation will result in damage to the unit for which we do not accept any warranty! During commission-
ing, as well as for the subsequent operation of the air handling unit, the information signs on the air handling unit
must be observed!
Switch on the circulation pump, check the direction of rotation, reverse the direction of rotation electrically if nec-
essary. Run the circulation pump to remove residual air from the control group. Check system pressure, top up if
necessary and vent again.
06.04 Faults and their elimination
All malfunctions such as the pump PTC thermistor, danger of frost or too low brine pressure must be evaluated via
the on-site control system.
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