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THERM CONNECT
05
WOLF run around coil systems
05.05 Structure-borne sound decoupling
For vibration isolation it is recommended to use suitable isolators.
05.06 Potential equalization
To avoid ignition hazards due to electrostatic charging, all electrically non-conductive connection points must be
bridged with potential equalization, e.g. elastic connections, decoupled frame, vibration damper, etc. All metal parts
of the device must be integrated into the local potential equalization measure. The base frames of the equipment
must be grounded according to the state of the art (foundation grounding).
05.07 Medium-side connections
The heat exchangers are connected with detachable connections. Care must be taken that access to other parts of
the unit is not obstructed by the connection lines (fan, filter, scrubber, etc.). When connecting the heat exchangers,
hold them with a pipe wrench.
The connections of the heat exchangers must not be loaded with expansion forces of the on-site supply lines. Use
expansion loops or compensators to absorb any forces that occur.
The flow of the heating or cooling system is connected to the exchanger on the air outlet side (counterflow principle).
Ensure that there is a venting and draining facility on site!
The connections on the THERM-CONNECT unit are provided with internal thread or flange. For the correct connec-
tion, the respective lines are provided with labels.
05.08 Drain-side connections
Depending on the unit type, the unit is equipped with a drain pan with ½" connection at the bottom or a glycol col-
lecting pan with 1" connection on the control cabinet side.
In the case of a drain pan, a collection device for the water-glycol mixture must be provided on site (retention
device for glycol-water mixture according to VAUwS , german: Directive on Installations for Handling Substances
Hazardous to Water!). The drain pan in the THERM-CONNECT unit provides a controlled discharge of leakages into
the drain.
If the unit is equipped with a drain pan, it offers sufficient volume to collect the entire amount of leaking fluid in
the event of an accident. In this case, the drain can be closed with a stopcock or forwarded to a collection device
provided by the customer
When installing the THERM-CONNECT unit in the unit, a suitable siphon must be provided at the drain!
05.09 Electrical connection
Attention!
During commissioning and maintenance, all terminal points of the electrical system must also be tightened.
EMC directives and radio interference suppression levels must be taken into account. For mains bypass circuits, the
relevant regulations according to VDE (Energy Supply Companies) and EVU (Association of Electrical, Electronic &
Information Technologies) for star-delta starting or direct starting must be observed. The connection guidelines of
the manufacturer must be observed!
The cross-section of the ground cable must be at least 10 mm², or two separately laid ground cables connected in
accordance with DIN EN 50178 or IEC 61800-5-1 must be used. Always follow the national and local regulations on
cable cross-section.
Commissioning: The operating instructions of the frequency inverter must be observed during commissioning. The
setting values of the frequency converter must be logged.
Caution:
Touching electrical components can be life-threatening even after disconnection from the power supply. Wait at
least 15 minutes.
Caution: The electrical connections as well as the wiring must be carried out by a qualified electrician. The applica-
ble standards must be observed.
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