BAPI RµPS Room Unit Catalog Page

RµPS Room Unit with External Sensor

13406_ins_rups_ext_sen

Overview and Identication

The RµPS Room Unit with an External Sensor displays the temperature
where the external sensor is located. The unit can also provide a setpoint
adjustment value and occupancy override value to a controller. The unit
does NOT provide a temperature sensor value to the controller. A second
temperature sensor is required for the controller (see Figs 2 & 4).

The setpoint adjustment is a vertical slide pot with an analog output and a
Warm/Cool legend imprinted on the unit’s base. Optional setpoint indication
is available. The setpoint values can be a resistance or a voltage for easy
conguration with the controller. The occupancy override is available as a
separate output or in parallel with the Sensor or Setpoint. An optional LED
indicator is available on the face of the RµPS unit and is energized from
the controller. An optional 3.5mm (1/8”) or RJ11 communication jack can
be mounted in the base to provide direct access to the network. The sensor
and setpoint outputs can be congured for “common ground” or “differential
ground” controller inputs.

Mounting (on two sides of the same wall)

Installation and Operating Instructions

rev. 06/26/15

Fig 1: RµPS Display Unit Dimensions

24 Inch Limit

Fig 2:

RuPS Display
Unit and External
Sensor mounted
on opposite sides
of the same wall.

Note: The External
Sensor could be a Wall
Plate sensor (shown) or
a Return Air Sensor.

(All external sensors are
ordered seperately.)

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 RuPS 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 RuPS 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 RuPS 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 RuPS Cover by latching it to the top of the base, rotating the cover down and snapping it into place.

6. Secure the RuPS cover by backing out the lock-down screws using a 1/16” Allen wrench until they are ush with the
bottom of the cover.

Specications subject to change without notice.

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RµPS Room Unit with External Sensor

Installation and Operating Instructions

13406_ins_rups_ext_sen

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 does not recommend wiring the sensor with power applied as accidental arcing may damage the product
and will void the warranty.

LED1 Short this terminal to Ground or Common to activate the

occupancy override LED on the front of the unit.

LED2 This terminal is only used if the unit is special ordered and the

customer wants to provide both power and ground to light the
occupancy override LED. Call BAPI tech support for more info.

GND Unit Ground or Common. Needs to be the same as the

controller’s Ground or Common.

POWER Unit power. 5 VDC (if 5 VDC option is selected when ordered)
9 to 40 VDC (15 to 24 VDC recommended)
15 to 28 VAC (requires a separate pair of shielded wires)

SEN1 & SEN2 10K-2 Thermistor input to the sensor display. No output to

controller. When unit is congured as Common Ground (CG),
SEN2 is internally shorted to the GND (Common) terminal.

SET1 & SET2 Temperature Setpoint Slider output. When unit is congured

as Common Ground (CG), SET2 is internally shorted to the
GND (Common) terminal.

OVR1 & OVR2 Occupancy Override Pushbutton, dry contact output. When

unit is congured as Common Ground (CG), OVR2 is internally
shorted to the GND (Common) terminal.

Notes:

Fig 3: RµPS Circuit Board

Test and Balance Switch is not available with an external sensor.
Common Ground (CG): GND, SEN2, SET2 & OVR2 are all internally connected.
Differential Ground (DG): GND, SEN2, SET2 & OVR2 are all internally isolated.

rev. 06/26/15

Must be
a 10K-2
Thermistor

Specications subject to change without notice.

Can be any sensor
specied for the
controller.

(This could also be

a Return Sensor)

Fig 4:

Dual External Sensor
Wiring Example with
a Common Ground
(CG) conguration.

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