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RC SERIES INSTALLATION MANUAL
ECM2 Fan air flow “Soft Switch Settings”
A set of 12 “soft switches” accessible through the user interface
or building automation system are used to select the three fan
speed settings for the ECM2 fan motor. The 12 soft switches work
in exactly the same way as the hardware switches used on the
Premier control (Refer to Fan Performance Data - ECM2 Motor for
proper settings). No more than three soft switches may be set to
the “ON” position. The first “ON” switch (the lowest number switch)
determines the “low speed fan” setting. The second determines
the “medium speed fan” setting, and the third determines the “high
speed fan” setting.
Emergency Heat/Network Enabled Output (BO5)
This output is set from the factory to enable/disable emergency
heat. If a problem occurs with the unit resulting in the compressor
being locked out in heating mode, the control will automatically
enable this output to turn on field installed electric heat. This
output is interlocked with the fan proving input BI-6 (Fan proving
sensors must be field supplied and installed). BI-6 must be
connected to PB2 position 3 (see unit schematic) in the field if no
fan proving sensor is desired. There is a configurable parameter
available through a BAS network that must be enabled if this
output is to be commanded over the BAS network.
MUI Alarm History Reporting
If a fault occurs the fault will be recorded in history for display on
the medium user interface in the History Menu. Each fault type
will be displayed in the history menu with a number between 0
and 3. A reading of 3+ will mean that fault has occurred more than
three times in the past. The history menu can be cleared with
a power cycle only. Alarm date and time are not included in the
history.
Inputs & Outputs Configuration
Field Selectable Options
Water Coil Low Temp (Freeze Sensing) Limit Set Point (BI-5)
The water coil low temperature (freeze sensing) limit set point
input allows you to adjust the water coil low temperature (freeze
sensing) limit set point (AI-5). When the jumper is installed on BI-5
(Wire #24) the water coil low temperature (freeze sensing) limit set
point is factory set for 30°F. When the jumper on BI-5 (Wire #24)
is removed the water coil low temperature (freeze sensing) limit
set point will be 15°F.
Accessory Outputs (BO-7 and BO-8)
Accessory Output 1 will be energized 90 seconds prior to the
compressor output being energized. Accessory Output 2 will be
energized with the fan output (BO-1). When the corresponding
compressor output is turned off the accessory output will be
deactivated immediately. These outputs are selectable for
normally open or normally closed operation through the Medium
User interface or through the Building Automation System.
Control Accessories
Zone Sensors
TAXXJ02 Room Command Module
•
TAXXA01 LCD Room Command Module
•
A99 Sensor
•
MUI (LCD User interface) for diagnostics
and commissioning.
MUIK1 - Panel Mount, Portable
•
MUIK2 - Wall Mount
•
Controls - FX10 cont.
Input Name
Input Output Name
Output
Zone Temp 1
AI 1 Fan Enable
BO1
Relative Humidity Input
AI 2 Comp – Low Capacity
BO2
Condensate Level
AI 3 Reversing Valve
BO3
Universal Temp Input
AI 4 Comp – Full Capacity
BO4
Water Coil Low Temperature Limit
AI 5 Network Output/EH Output
BO5
Warm/Cool Adjust and Temp Occ
AI 6 Alarm
BO6
Accessory 1 Output
BO7
Occupied
BI 1 Accessory 2 Output
BO8
Emergency Shutdown
BI 2 Network Controlled Output
B09
Stage 1 Low Pressure
BI 3
Network Viewable Input 1
BI 4 ECM2 Fan
PWM1
Water Coil Low Temp Limit Set Point
BI 5 Network Controlled Output
PWM2
Network Viewable Input 2
BI 6
Thermostat Y1
BI 7
Thermostat Y2
BI 8
Thermostat O
BI 9
Thermostat G
B10
Stage 1 High Pressure
BI11
Compressor Proving
BI12
XP10 Expansion Card
Input Name
Input Output Name
Output
Unused
AI 1 Unused
BO 1
Unused
AI 2 Unused
BO 2
Unused
AI 3 Unused
BO 3
Unused
AI 4 Unused
BO 4
SINGLE and DUAL STAGE WATER-TO-AIR
