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Diagram
Connection must be carried out according to the following diagram. Refer to the
Electrical Installation Guide for the relevant VEX. (supplied with the VEX unit) for further
details of how to connect standard components to the connection box.
3.2.1 Cable (type, max. length and termination)
Cable
EXHAUSTO recommends the use of 4-core, twisted pair, shielded cable. To limit
voltage drop across the cable, 0.25 diameter conductor is recommended. For
correct connection of shielded cable to Modbus units, refer to the Electrical
Installation Guide for the relevant VEX.
Max. cable length
The overall cable length of a complete installation may not exceed 200 m.
3.2 Connection of Modbus devices
MHCW/MHCE
Module for controlling heating coil (water or electric)
MXCU/MCCW
Module for control of coil with cold water supply.
MPT DUCT
Pressure measurement in duct
XXXXX
Can be different modules, e.g. MIO module or additional MPTDUCT
HMI
Control panel
*Not supplied by EXHAUSTO
Summary of Contents for MCCW
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