TSI Instruments PRESSURA RPM10, PRESSURA RPM20-CC, PRESSURA RPM20-LON, PRESSURA RPM20 Installation Instructions And Safety Information

This product is classified by UL as to fire resistive properties only. See UL File R15545.

Figure 1: Typical Installation

Component List

Part Number

Qty

Description

800243

1

Pressure sensor
with cable

or

801913

1

Transducer Pick­ups

800980

RPM10 Room
Pressure Monitor

or

800981/800982

1

RPM20 /
RPM20-LON Room
Pressure Monitor

or

800986/800867

1

RPM20-CC Room
Pressure Monitor

MODEL RPM10/RPM20 (-LON)/RPM20-CC PRESSURA™

ROOM PRESSURE MONITOR

INSTALLATION INSTRUCTIONS

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The Model RPM10, RPM20 (-LON) and RPM20-CC Room Pressure Monitors must be wired to 24 VAC only.

Wiring the unit to 110 VAC will cause serious damage to the unit and void the warranty.

The pressure sensor must be mounted through the wall between the controlled space (isolation room) and
referenced space (ante room / hallway).

Go to www.tsi.com to download the Operation & Service Manual for the Model RPM10 or RPM20.

These installation instructions guide the installer through the installation of the TSI Model RPM10 PresSura™
Room Pressure Monitor or the TSI Model RPM20 (-LON) / RPM20-CC PresSura Room Pressure Monitor. The
installation instructions cover all monitor versions. Unless specified otherwise, figures and instructions apply
to all versions. Please read these instructions thoroughly before beginning installation.

_____________________
TSI and TSI logo are registered trademarks of TSI Incorporated. PresSura is a trademark of TSI Incorporated.
BACnet is a trademark of ASHRAE. Modbus is a registered trademark of Modicon, Inc.
LonWorks is a registered trademark of Echelon® Corporation.

Pressure Sensor Installation

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800243 pressure sensor must be mounted
through the wall between the controlled space
(isolation room) and referenced space
(hallway), exactly as shown in Figure 3 and
Figure 4.

 Determine pressure sensor location

(Figure 1, Figure 3, and Figure 4). Pressure
sensor typically mounts in the reference
space, and the dummy housing mounts in
the isolation room.

NOTE: Pressure sensor is not symmetrical.
If sensor is to be centered over hallway
door, measure one inch to the left of center
for 2¼” hole. Dummy sensor will be 2” off
center on other side of wall.

 The pressure sensor must be orientated on

the wall as shown in Figure 2. Looking at
the mounted sensor, sensor hole is on the
left (2¼”) and wire hole is on the right.

 Drill a 2¼” hole through each side of the

wall to accept the sensor tube.

 Drill a

7

8” hole on the side of the wall that
the pressure sensor will be mounted. This
hole is for the six-conductor sensor cable.
Refer to Figure 2 for a hole mounting
pattern.

 Slide sensor cover to right and remove

screw that holds the sensor base to the
pressure sensor (Figure 2). Remove
pressure sensor and store in a safe place.

 From the side of the wall the sensor will be

mounted, slide the sensor tube through the
wall. Mark the tube where it is flush with wall.
Remove sensor tube and cut tube 18 inch
shorter than flush marking.

NOTE: If 12” sensor tube needs to be
extended, use same size or larger diameter

tube. Drill out ½” sensor hole in dummy case

to match ID of tube extension.

 From the side of the wall the sensor will be

mounted, slide the sensor tube through the
wall. Slide the dummy base over the end of
the tube. Screw the pressure sensor base
and dummy base to the wall (Figure 3 and
Figure 4).

Figure 2: Pressure Sensor Orientation and

Mounting Template

 Wire the pressure sensor per Figure 8 to

Figure 23. Run sensor cable to the room
pressure monitor 6”  4” electrical rough-in
box.

 Insert fire protection sealant (provided) into

7

8” wire hole to seal.

 Install and screw the pressure sensor and

dummy cover onto the bases. Slide covers to
the left to hide the sensor. Finished
installation should look as shown in
Figure 4.

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Do not touch the sensor element in the
pressure sensor. Do not run wires through the
air passage. Doing so will damage the sensing
element.

p. 2 of 16

CEILING

DUMMY

COVER

CONTROLLED SPACE

REFERENCE SPACE

(TYPICALLY A HALLWAY)

BLACK FIRE SEALANT RING
MUST INSERT INTO

2 ¼” HOLE

PRESSURE
SENSOR

½ THE DISTANCE

BETWEEN CEILING

& DOOR JAMB

WALL

Figure 3: Cutaway View of Mounted Pressure Sensor

Figure 4: Pressure Sensor Mounting

p. 3 of 16

Pressure Transducer Installation

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801913 pressure plates must be mounted in the
wall between the controlled space (clean room)
and referenced space (hallway), exactly as shown
in Figure 5 and Figure 6. This installation is not
representative of the through penetrating product
tested under UL.

 Install pressure transducer in desired location

(typically above ceiling). The transducer must be
mounted on a wall in the correct position per
Figure 5 (screws not provided). Do not mount
pressure transducer to duct or other vibrating
surface.

 Wire the pressure transducer per Figure 9 or

Figure 10. Run sensor cable to the Clean Room
Pressure Monitor 6”  4” electrical rough-in box.

 Determine pressure sensor location (Figure 1,

Figure 5 and Figure 6). Pressure sensor typically

mounts in the reference space, and the plate
mounts in the clean room.

 Drill a 2¼-inch hole through each side of the

wall to accept the sensor tube.

 Run pneumatic tubing from transducer to

sensor locations. For a positively pressurized
space, the high port should be connected to
the controlled space and the low port to the
reference space. Similarly, for a negatively
pressurized space, the low port should be
connected to the controlled space and the high
to the reference space.

 Connect the pneumatic tubing to the nipple on

the back side of the pressure plate.

 Insert the pressure plate into the hole in the

wall. Screw the pressure plate to the wall. The
finished assembly should look like Figure 5.

Figure 5: Cutaway View of Mounted Pressure Transducer Assembly

Figure 6: Pressure Transducer Mounting

p. 4 of 16

Pressure Monitor Installation

Pressure Monitor Rough-in

 Select the mounting location of the pressure monitor. The construction plans normally show the

mounting location. If no location is specified, then the unit is typically installed as shown in Figure 1.
Alternate mounting locations are nurses’ station, other staff areas, etc.

 Install a standard triple gang electrical box (6”  4”). The electrical box must be installed level and flush

with the wall surface.

 Use appropriate firestop material, per local codes, if electrical box is to be installed in a fire barrier.
 Screw PresSura DIM to electrical box (Figure 7).

Figure 7: Pressure Monitor Mounting

Pressure Monitor Wiring

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Do not connect more than 24 VAC to any terminal.

Do not apply voltage to the RS-485 output, BACnet output, analog output, or control output. Severe
damage may occur to the unit if voltage is applied.

Wiring Recommendations

 TSI recommends stranded wire.
 Comply with local and national electrical codes.
 Follow good wiring practices:

o Do not run control wiring in the same conduit or wireway as power wiring.
o Control cables should cross power cables at a 90-degree angle.
o Use a consistent color code to maintain polarity.
o Control signals require “home run” wiring / star configuration. Do not daisy-chain control wires or

use a series configuration.

o Use daisy-chain configuration for connecting the nurses’ station to monitors and controllers.

 Remove the connectors from the back of the pressure monitor.
 Refer to the wiring diagrams, Figure 8 to Figure 23 for proper wiring installation.
 If additional options need to be wired, refer to building prints for proper wiring diagram.
 Plug the connectors back into the pressure monitor.
 Carefully push the wires into the electrical box and mount the pressure monitor. Install four screws to

hold pressure monitor firmly to base. Install cover and slide left to hide display.

p. 5 of 16

 Press cover plate onto PresSura Monitor.

Digital Interface
Module (DIM) Each

Through the Wall
Sensor Each

24VAC, 50/60 Hz, 3VA

24VAC, 50/60 Hz, 3VA

NOTE: Model RPM10 does not support Room 2 or Anteroom Through-The-Wall Sensors.

RPM20-CC only does not support Room 2 or Anteroom Through-The-Wall Sensors
when configured for use with Remote with Pump Particle Counter.

Power Requirements

WARNING: Monitor must be wired exactly as wire diagram shows. Making modifications to the

wiring may severely damage the unit.

Figure 8: Through-The-Wall Sensors Wiring to Model RPM10 / RPM20

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NOTE: Number of sensors will vary per application.

NOTE: Model RPM10 does not support Room 2 or Anteroom Pressure Transducer Sensors.

RPM20-CC only does not support Room 2 or Anteroom Pressure Transducers when
configured for use with Remote with Pump Particle Counter.

NOTE: Number of sensors will vary per application.

Figure 9. Pressure Transducer Sensors Wiring to Model RPM10 / RPM20

p. 7 of 16

NOTE: RPM20-CC does not support Exhaust Flow Switch when configured for use with

Remote with Pump Particle Counter.

NOTE: RPM20-CC does not support Exhaust Pressure-Based Flow Station when configured for

use with Remote with Pump Particle Counter.

Figure 10. Optional Supply / Exhaust Flow Switch Wiring to Model RPM10 / RPM20

Figure 11. Optional Supply / Exhaust Pressure-Based Flow Station Wiring to Model RPM10 / RPM20

p. 8 of 16

NOTE: RPM20-CC does not support Exhaust Linear Flow Station when configured for use with

Remote with Pump Particle Counter.

NOTE: RPM20-CC does not support Exhaust Venturi Valve when configured for use with

Remote with Pump Particle Counter.

Figure 12. Optional Supply / Exhaust Linear Flow Station Wiring to Model RPM10 / RPM20

Figure 13. Optional Supply / Exhaust Venturi Valve Wiring to Model RPM10 / RPM20

p. 9 of 16

NOTE: Model RPM10 does not support Room 2 Door Switch.

RPM20-CC does not support Door Switch when configured for use with Remote with
Pump Particle Counter.

NOTE: Model RPM10 does not support Room 2 Occupancy Sensor.

Model RPM20-CC does not support Occupancy Sensors when configured for use with
Remote with Pump Particle Counter

Figure 14. Optional Door Switch Wiring to Model RPM10 / RPM20

Figure 15. Optional Occupancy Sensor Wiring to Model RPM10 / RPM20

p. 10 of 16

NOTE: Model RPM10 does not support Temperature Sensor.

NOTE: Model RPM10 does not support Room 2 Key Switch.

RPM20-CC does not support Key Switch when configured for use with Remote with
Pump Particle Counter

Figure 16. Optional Temperature Sensor Wiring to Model RPM20

Figure 17. Optional Key Switch Wiring to Model RPM10 / RPM20

p. 11 of 16

NOTE: Model RPM10 does not support Room 2 Key Switch with remote alarm.

RPM20-CC does not support Key Switch when configured for use with Remote with
Pump Particle Counter

Figure 18. Optional Key Switch with Remote Alarm Wiring to Model RPM10 / RPM20

p. 12 of 16

NOTE: Model RPM10 does not support Relative Humidity Sensor.

Figure 19. Optional Relative Humidity Sensor Wiring to Model RPM20

NOTE: A 120Ω resistor should be installed on both ends of the RS-485 daisy-chain.

Figure 20. Optional Nurses Station Communications Wiring to Model RPM10 / RPM20

p. 13 of 16

NOTE: Model RPM10 and Model RPM20 do not support Remote with Pump Particle Counter.

NOTE: A 500Ω resistor should be installed across the input at the Model RPM20-CC.

Figure 21. Remote with Pump Particle Counter wiring to Model RPM20-CC.

NOTE: A 120Ω resistor should be installed on both ends of the RS-485 daisy-chain.

Figure 22. Optional Modbus and BACnet MS/TP Communications Wiring to Model RPM10 / RPM20

p. 14 of 16

Figure 23. Optional LONworks Communications Wiring to Model RPM20-LON

p. 15 of 16

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P/N 6006661 Rev. G ©2018 TSI Incorporated Printed in U.S.A.

Figure 24. Proper Communication Wiring Diagram