Assembly and installation
2
Fläkt Woods
8877 GB 2017.10.25
Specifications are subject to change without further notice
TWIN WHEEL SYSTEM
The Twin Wheel system is designed to operate as a part of an
air handling unit, delivering a controlled temperature and
humidity level. In order for the unit to function with intended
purpose, it is strongly advised to carefully follow the installation
instructions found inside this manual.
The Twin Wheel system consists of:
• Hygroscopic rotary heat exchanger
• Cooling coil (Valve actuator not included. Must be 0-10 V)
• Sensible rotary heat exchanger
• Control Box with operators´ panel
• Combined temp./humidity sensor
• Prewired sensors and cabling
In order for the control system to operate, the components
listed above all require some form of either manual wiring,
connecting or installing. See the quick guide on page 4.
Signal cables required from the AHU/BMS controller are as
follows:
• Supply air set point signal cable. (0-10 V)
• Start signal cable
• Power supply cable for connecting to the TW controller
Optional AHU/BMS cable signals:
• External heater cable (Always connect to TW if external
heater is present)
• Cooling alarm cable.
• Pump cooling cable
• AHU Heater feedback signal cable.
• Alarm cable
• Alarm B cable
LIMITS OF RESPONSIBILITIES
Although Fläkt Woods has tested and reviewed the documenta-
tion within this manual, Fläkt Woods makes no warranty, neither
expressed nor implied, with respect to this documentation,
including its quality, performance, or fitness for a particular
purpose.
Fläkt Woods shall under no circumstances be liable for direct,
indirect, special, incidental or consequential damages arising
from the use or the inability to use information contained in this
manual.
As a part of Fläkt Woods’ continuous process of improvement,
we reserve the rights to modify or amend this information at its
discretion.