WaterFurnace Envisio Series Console - Manual (Page 31)

31
ENVISION CONSOLE - 50 HZ INSTALLATION MANUAL
Condensate overflow fault ...............................................30 seconds
Low pressure fault bypass ................................................... 2 minutes
Freeze detection fault bypass ............................................ 2 minutes
Optional FX10 Microprocessor
and BAS Interface
The FX10 is a microprocessor based control that not
only monitors and controls the heat pump but also can
communicate any of this information back to the building
automation system (BAS). This means that not only does
the control monitor the heat pump at the unit you can also
monitor and control many the features over the BAS. This
clearly puts the FX10 in a class of its own.
The control will enumerate all fault conditions (HP, LP, CO,
LOC, and Freeze Detection) over a BAS as well as display
them on a medium user interface (MUI). HP, LP, CO and
Freeze Detection faults can all be reset over a BAS. A
Loss Of Charge fault can not be reset or bypassed until
the problem has been corrected. A MUI is invaluable as a
service tool for the building service team.
The unit can be commanded to run by a typical heat pump
thermostat or run based on heating and cooling set points
supplied by a BAS. The control board is wired with quick
connect harnesses for easy field change out of a bad
control board. All ECM variable blower speed settings can
be changed over a BAS or with a MUI. The control has an
input programmed to enable field installed emergency
heat in the event that the compressor is locked out. This
input can also be commanded on from a BAS as needed.
An alarm history can be viewed through the MUI and will
be held in memory until the unit is power cycled. Relative
humidity can be read by a 0-5VDC humidity sensor that is
displayed over the network. If you are using an ECM blower
motor the control can enable dehumidification mode based
on a set point in the control. The dehumidification set
point itself can also be changed over a BAS or with a MUI.
Dehumidification mode can also be enabled by the BAS.
Because the FX10 is not factory configured to read CO 2
levels, contact the factory for application assistance.
The FX10 control has unused analog and digital inputs
for field installed items such as air temperature, water
temperature, CO 2 or current status switches. The control has
unused binary and PWM outputs that can be commanded
over the BAS for field use. An optional Medium User
Interface (MUI) for control setup and advanced diagnostics
is available with some mounting kits, MUIK1 - Panel mount
version and the MUIK2-Wall mount version.
Zone Sensors
There are two options for zone sensors that can be used
with the FX10 control. Both sensors use a Johnson controls
A99 positive temperature coefficient type sensor. The
TAXXJ02 has a set point adjustment now which will give
the end user a +/- 5°F [2.7°C] adjustment from the set point
as well as a push button that can be used for temporary
occupancy. The control leaves the factory set to operate
with a TAXXJ02 sensor and can be changed to read the
TAXXA01 sensor through a building automation system or
with a user interface.
Standard Features
• Anti Short Cycle
• High Pressure Protection
• Low Pressure Protection
• Freeze Detection
• Loss Of Charge Detection
• Random Start
• Display for diagnostics
• Reset Lockout at disconnect or through BAS
• 2 Accessory outputs
• Optional BAS add-on controls
DDC Operation and Connection
Other optional network protocol boards that can be added
to the FX10 are:
• Johnson Control N2
• LonWorks
• BACnet
- MS/TP @ 19,200 Baud rate
- Limit devices to 30 on a single trunk line.
Control and Safety Feature Details
Emergency Shutdown
The emergency shutdown mode can be activated by a
command from a facility management system or a closed
contact on BI-2. The default state for the emergency
shutdown data point is off. When the emergency shutdown
mode is activated, all outputs will be turned off immediately
and will remain off until the emergency shutdown mode is
de-activated. The first time the compressor starts after the
emergency shutdown mode has been de-activated, there
will be a random start delay present.
Envision Controls cont.
S Interface