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RICKARD ELECTRONIC VAV DIFFUSER SERIES
K
K-4
© FANTECH
2016
INTRODUCTION
The Rickard range of VAV Electronic diffusers has been
developed as an intelligent modular system. They vary the
volume of conditioned air entering a space in accordance with
demand, which helps maintain a comfortable and productive
indoor temperature. They can potentially also reduce the energy
consumption of a building by lowering the demand on the air
handling system.
They are very reliable, easy to install and can be individually
programmed to provide occupants with total control over their
environment. They do not require routine maintenance and will
function effectively when the building's air conditioning system
is in heating or cooling mode.
Depending on the demands required, Rickard's VAV Electronic
diffusers maintain air volumes ranging from 100% to 10% while
maintaining constant outlet velocity, which effectively mixes
the air and maintains a healthier environment.
Typical Applications
The Rickard Electronic diffuser system can be as simple as one
diffuser in a single room or scaled up to work within large open
areas with multiple diffusers on multi levels of a building.
60 diffusers can be accommodated on a single Rickard Master
Communication Unit (MCU) and multiple MCU's can be
connected to a BMS.
Construction
Diffusers are of sheet steel construction and finished in a chip
resistant epoxy powder coating. Matt pen white is the standard
colour but specific colours can be ordered to suit the
architectural requirements*. All internal components
of non-metallic construction are moulded in fire retardant
Makrolon glass reinforced plastic.
Mechanism
Air volume control is achieved through the opening and closing
of the air outlet mechanism within the diffuser. This mechanism
is driven by an electric actuator and allows more or less air
to enter the occupied space.
Power Supply Unit
Able to power up to 15 Electronic VAV Diffusers
Input 85-265 Vac
Output 36 Vdc regulated @ 1.2 Amps Max
Operating Temperature 0°C to +50°C
Power Consumption 50 Watt Max
Industry standard DIN rail mounting
Testing
Methods of testing the performance of air outlets and air inlets.
ANSI/ASHRAE Standard 70-2006 (RA 2011)
SYSTEM FLEXIBILITY
Diffusers can be individually controlled by either a wall
thermostat or the on-board master controller that sends its
signal back to the BMS. The entire system is then monitored
and changes can be made via a computer either on-site
or remotely using the Rickard stand-alone software or a BMS.
These intelligent VAV Diffusers operate on a low pressure
ductwork design, making them highly energy efficient,
but the pressure in the duct work must be controlled for optimal
performance. For new installations duct design that achieves
static regain is highly recommended. If retrofitting to existing
ducting, a relief ring can be fitted to the diffuser to release
air pressure when the diffusers close.
SUGGESTED SPECIFICATION
The diffusers shall be of the Rickard VAV Electronic diffuser
range as supplied by Fantech Pty Ltd and be of the model
number shown on the schedule/drawings.
They shall be manufactured from sheet steel and finished in
a chip resistant epoxy powder coating. All internal components
of non-metallic construction shall be moulded in fire retardant
Makrolon glass reinforced plastic.
Air volume control shall be achieved with the opening and
closing of the diffusers aperture which varies the volume of
conditioned air to enter the occupied space. The aperture shall
be driven by a 12V DC electric actuator which receives a signal
from a Rickard diffuser's master controller.
The system shall be supplied with Rickard MLM software that is
used for commissioning, setting diffuser parameters, monitoring
the network, logging diffuser activity and converting slave
diffusers to master diffusers, all from below the ceiling via a
computer. The sytem can also be controlled through the
building's BMS. All models shall be fully tested to ANSI/ASHRAE
Standard 70-2006 (RA 2011).
RICKARD VAV DIFFUSERS
