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BA/RµPM with External Sensor
Installation and Operating Instructions
14803_ins_rupm_fan_ext_sens
Product Identication and Overview
The RµPM Room Unit with an External Sensor displays the temperature where
the external sensor is located. The unit can also provide setpoint adjustment,
occupancy override, fan speed and mode control for the controller. The unit can
also provide the temperature measurement value to the controller as a 3K, 10K-2,
10K-3 or 10K-3(11K) Thermistor. If the controller requires a sensor other than the
four listed above, then that sensor must be installed as a second sensor in the
same location as the external sensor (see Figs. 6 & 8).
The unit is available with an optional 3.5mm (1/8”) or RJ11 Comm. Jack and
a Test and Balance Switch. The Setpoint is displayed for a short time after an
adjustment and can be programmed to display as an offset (i.e. -2, -1, 0, 1, 2) or
as a value within a specied temperature range (i.e. 65 to 80 °F). The Override is
a momentary signal congured in parallel with the Sensor or Setpoint. Fan Speed
or Mode are provided as a single analog output (resistive) and include appropriate
LED indicators on the face of the unit.
rev. 06/26/15
Fig. 1:
RuPM
Dimensions
Fig. 2: 3-Button with
Setpoint & Override
Fig. 3: 5-Button with
Fan Speed Control
Fig. 4: 6-Button with
Fan Speed Control
Fig. 5: 4-Button with
Fan & Mode Control
Fig. 6: 5-Button with
Fan & Mode Control
Mounting (on two sides of the same wall)
Fig 7:
RuPM Display
Unit and External
Sensor mounted
on opposite sides
of the same wall.
1. Mount two junction boxes on opposite sides of the same wall. One side of the wall is the wall plate external sensor
and the other side of the wall is where the RuPM display unit will be installed. Place the boxes close enough together
that the wire on the wall plate and the display unit can reach one another.
2. Secure the RuPM display unit base to the junction box using the #6-32 x 1/2 inch mounting screws provided.
3. Run the wires from the wall plate through the junction box into the junction box for the RuPM display unit. Secure the
wall plate to the junction box with the #6-32 x 1/2 inch mounting screws provided making sure the foam on the back of
the wall plate makes a good seal with the wall.
4. Terminate the unit according to the Termination guidelines on page 1.
5. Attach RuPM Cover by latching it to the top of the base, rotating the cover down and snapping it into place.
6. Secure the RuPM cover by backing out the lock-down screws using a 1/16” Allen wrench until they are ush with the
bottom of the cover.
Specications subject to change without notice.
24 Inch Limit
Note: The External
Sensor could be a Wall
Plate sensor (shown) or
a Return Air Sensor.
(All external sensors are
ordered seperately.)
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BA/RµPM with External Sensor
Installation and Operating Instructions
14803_ins_rupm_fan_ext_sens
Termination
BAPI recommends using twisted pair of at least 22AWG and sealant lled connectors for all wire connections. Larger
gauge wire may be required for long runs. All wiring must comply with the National Electric Code (NEC) and local codes.
Do NOT run this device’s wiring in the same conduit as AC power wiring of NEC class 1, NEC class 2, NEC class 3 or with
wiring used to supply highly inductive loads such as motors, contactors and relays. BAPI’s tests show that uctuating and
inaccurate signal levels are possible when AC power wiring is present in the same conduit as the signal lines.
BAPI recommends wiring the product with power disconnected. Proper supply voltage, polarity, and wiring
connections are important to a successful installation. Not observing these recommendations may damage the
product and will void the warranty.
Terminal 4, 5 or 6 Button Units 3 Button Units
1 ..............Temperature Sensor Output .......Temperature Sensor Output
2 ..............*Ground ......................................*Ground
3 ..............Setpoint Output ..........................Setpoint Output
4 ..............Fan Speed/Mode Output ............Not Connected
5 ..............External Sensor Input .................External Sensor Input
6 ..............External Sensor Input .................External Sensor Input
7 ..............Shield for External Sensor ..........Shield for External Sensor
8 ..............**Power ......................................**Power
rev. 06/26/15
Fig 8: RµPM Circuit Board
Must be
a 10K-2
Thermistor
Notes:
*Terminal 2 (Common or Ground) is the common for the power, temperature
sensor, fan speed and setpoint.
**Power requirements are shown in the Specications Section.
The Override is factory set to be in parallel with the temperature sensor (Terminals
1 & 2) or the setpoint (Terminals 3 & 2). The Override conguration is NOT eld
selectable.
Fig 9:
Can be any sensor
specied for the
controller.*
Dual External Sensor
Wiring Example
(Common Ground
conguration is required on
RuPM units.)
(This could also be
a Return Sensor)
*
*Note: A
or 10K-3(11K) Thermistor
temperature output is
available from Terminal 1. If
the controller can take any
of these as its temperature
input, then Terminal 1 can
be connected to the Sensor
Input of the controller and
the second external sensor
is not needed.
3K, 10K-2, 10K-3
Specications subject to change without notice.
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14803_ins_rupm_fan_ext_sens
Optional Communication Jack in Base
Fig. 10:
C35 Comm Jack
(Male Jack shown for clarity)
BA/RµPM with External Sensor
Installation and Operating Instructions
rev. 06/26/15
Fig. 11:
C35 Comm Jack
in Unit’s Base.
(Front of unit base
is shown at left,
back of base at
right)
C11 or C22 Wiring
Fig. 12:
C11 or C22
Comm Jack
Optional Test & Balance Switch
Sensor Type Low High
Resistance(Temp) Resistance(Temp)
1000Ω RTD 1.02KΩ (41.2°F) 1.15KΩ (101.5°F)
3000Ω Thermistor 7.87KΩ (39.5°F) 1.5KΩ (106.8°F)
10K-2Ω Thermistor 30.1KΩ (34.9°F) 4.75KΩ (109.2°F)
10K-3Ω Thermistor 26.7KΩ (35.9°F) 5.11KΩ (108.4°F)
10K-3(11K)Ω Thermistor 7.32KΩ (43.7°F) 3.65KΩ (105.2°F)
°F or °C Display Setup
Fig. 13:
C11 or C22 Comm
Jack in Unit’s
Base.
(Front of unit base
is shown at left,
back of base at
right)
Optional Test and Balance Switch (SW7)
HI: Will set the sensor value to High temp
NORM: Temperature sensor will operate Normally
LO: Will set the sensor value to Low temp
J4 controls whether the unit displays ºF or ºC at power up. The jumper is set at the
°F Operation
°C Operation
factory per your order but is eld adjustable.
Fig. 14: J4 Settings
J4
J4
Sensor Display Offset
The sensor display offset is enabled by holding down the setpoint UP and DOWN buttons simultaneously for 3 seconds.
The display will then show the last offset value. Adjust the offset up or down ±3º in 0.5º steps using the setpoint UP or
DOWN buttons. The offset affects both the display and the temperature sensor output. After 10 seconds without any
button depression, the display will return to normal and the new offset is retained.
Specications subject to change without notice.
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BA/RµPM with External Sensor
Installation and Operating Instructions
14803_ins_rupm_fan_ext_sens
Fan Speed Keypad Function
°C/°F Toggles LCD between °C/°F temperature & setpoint display.
TEMP Raises or lowers the desired setpoint temperature. Setpoint temperature
will be displayed on the LCD as the keys are used. LCD will revert to
normal temperature display after a few seconds of no key presses.
FAN Adjusts the fan speed mode as indicated by the red LEDs in the fan
speed display area.
rev. 06/26/15
OVERRIDE Sets the appropriate output [Sensor or Setpoint] to it’s lowest resistance
value. Output maintains as long as the key is pressed plus 2 seconds
once released.
Keypad for unit with Fan
Speed, Temp Setpoint,
Fig. 15:
Override & °C/°F
Fan & Mode Keypad Function
MODE Sets unit mode (Heat, Off, Cool) as indicated by the red LEDs in the
Mode area.
TEMP Raises or lowers the desired setpoint temperature. Setpoint
SETPOINT temperature will be displayed on the LCD as the keys are pressed.
LCD will revert to normal temperature display after a few seconds of
no key presses.
FAN Adjusts the fan operation as indicated by the red LEDs in the fan
display area.
OVERRIDE Sets the appropriate output [Sensor or Setpoint] to it’s lowest
resistance value. Output maintains as long as the key is pressed plus
a few seconds once released (Only 5-button units)
Keypad for unit with Fan
and Mode control with Temp
Setpoint and Override
Fig. 16:
Fan Speed & Mode Control Output Resistances (Specied at time of order)
MODE CONTROL UNITS
OPTION HEAT/AUTO OFF /AUTO COOL/AUTO HEAT/ON OFF/ON COOL/ON
HCF 5KΩ 10KΩ 15KΩ 20KΩ 25KΩ 30KΩ
H01 0Ω 2KΩ 4KΩ 6KΩ 8KΩ 10KΩ
FAN SPEED UNITS
OPTION OFF AUTO LO MED HI
XLD 5KΩ 10KΩ 15KΩ 20KΩ 25KΩ
X01 4.89KΩ 2.33KΩ 10.63KΩ 13.24KΩ 16.33K
X02 2KΩ 4KΩ 6KΩ 8KΩ 10KΩ
Specications subject to change without notice.
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14803_ins_rupm_fan_ext_sens
Diagnostics
BA/RµPM with External Sensor
Installation and Operating Instructions
rev. 06/26/15
POSSIBLE PROBLEMS:
Temperature reading is
incorrect
Setpoint reading is
incorrect
Override is not working
correctly
Fan speed is incorrect
POSSIBLE SOLUTIONS:
- Determine that the temperature sensor’s wires are connected to the correct controller
input terminals and are not loose.
- Check the wires at the sensor and controller for proper connections.
- Measure the physical temperature at the temperature sensor’s location using an accurate
temperature standard. Disconnect the temperature sensor wire (Terminal 1) and measure
the temperature sensor’s resistance across the sensor output pins with an ohmmeter
(Make sure the RuPM is powered for this measurement). If the measured resistance is
different from the temperature table by more than 5% call BAPI technical support.
- Make sure that the test and balance switch is in the correct position.
- Make sure that the temperature sensor element leads are not touching one another.
- Make sure that the setpoint output wiring is correct. Remove the setpoint output wire
(Terminal 3) and check the output for the correct resistance or voltage output. (Make sure
the RuPM is powered for this measurement.) See the product label for your specic range.
Don’t forget to reconnect the wire.
- Check that the resistance across the override output is less than 5 ohms when the
OVERRIDE button is pushed (Make sure the RuPM is powered for this measurement.)
Disconnect the temperature sensor wire (Terminal 1) for override in parallel with sensor
OR disconnect the setpoint output wire (Terminal 3) for override in parallel with setpoint.
- Check the wires at the sensor and controller for proper connections.
- Make sure that the FAN SPEED output is correct (Make sure the RuPM is powered for
this measurement). Remove the fan output wire (Terminal 4) and check the output for the
correct resistance output. Push the FAN SPEED button and check the resistances when
each LED is lit. See the “Fan Speed and Mode Control Output Resistances” on pg 4 for
your specic output resistances. Don’t forget to reconnect the wire.
Specications
Power:
5 VDC (only if 5 VDC option is selected when ordered)
11 to 35 VDC (15 to 24 VDC recommended) for 0 to 5V Setpoint
15 to 35 VDC (15 to 24 VDC recommended) 0 to 10V Setpoint
15 to 28 VAC (Requires a separate pair of shielded wires)
Power Consumption: 10 mA max. DC, .2 VA maximum AC
Wiring: 2 to 4 pair of 16 to 22AWG
Sensing Element: Thermistor or RTD
Opt. Comm. Jack: 3.5mm Phono Jack, RJ11 or RJ22 Jacks
Specications subject to change without notice.
Mounting: Standard 2x4” J-box or drywall mount
(mounting screws provided)
Environmental Operation Range:
Temperature: 32 to 122 oF (0 to 50 oC)
Humidity: 0 to 95%, non-condensing
Enclosure Material & Rating: ABS Plastic, UL94 HB
External Sensor (-ES):
Thermistor 10K-2, 18 AWG TSP
Sensor wire must be <24”
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