Siemens RPT Manual de usuario

Installation Instructions

Document No. 540-369

November 15, 2006

Remote Pressure Transmitter

Revision: EA Page 1 of 3

Product Description

The Remote Pressure Transmitter (RPT) (Figure 1)

measures the difference in air pressure between a

room and an adjacent space. It sends that

measurement to the Differential Pressure Monitor.

This kit contains:

•Remote Pressure Transmitter and inside

cover assembly

•Outside cover assembly

•One 12-inch airflow tube

•Eight 1-1/4 inch tamper-resistant screws

•Four wall anchors

•Two removable wire connectors

AIRFLOW TUBE

SEN0179R2

INSIDE

COVER PLATE

OUTSIDE

COVER PLATE

Figure 1. Remote Pressure Transmitter (RPT).

Product Numbers

547-003

Warning/Caution Notations

CAUTION: Equipment damage or loss of

data may occur if the user does

not follow procedure as

specified.

Required Tools

•Small flat-blade screwdriver

•5/64-inch Allen key wrench

•Wire strippers

•Electric drill

•2-inch hole saw

•1/4-inch drill bit

•Plastic tube cutter, pipe cutter, or hacksaw

•Level

•Tape measure

•Volt-ohm meter

Expected Installation Time

15 minutes

Prerequisites

•Electrical box and plaster ring in place

•24 Vac Power cable in place

•Pressure signal cable in place

CAUTION:

Do not apply 24 Vac power until the

installation is fully completed. If power is

applied and one of the heat sinks makes

contact with the electrical box, damage will

occur to the RPT.

Ratings

•Power input: 24 Vac, 2.5 VA

•Pressure signal: standard RS485

Document No. 540-369

Installation Instructions

December 15, 2004

Instructions

1. Verify that the electrical box, onto which the front

part of the RPT will be mounted, is grounded.

NOTE: In Steps 2 through 5, you will determine

where, on the outside wall, to drill a 2-

inch hole. You will use the outside

cover plate on the inside wall to make

offset measurements from the door

frame to the air inlet and then transfer

these measurements to the outside

wall.

2. Temporarily mount the outside cover plate onto

the electrical box in the inside wall, with the

outside cover plate oriented so that the Siemens

Building Technologies logo is at the bottom.

CAUTION:

For the RPT to function properly, the

airflow tube that connects the front and

rear cover plates must be level. Since the

next two steps determine the location of

the rear cover plate on the outside wall,

they are critical to the accurate operation

of the RPT.

3. On the inside wall, measure the distances from

the middle hole in the outside cover plate’s air

inlet to the floor and the door frame, as shown in

Figure 2, and then remove the outside cover

plate from the inside wall.

CAUTION:

If the floors inside and outside the room

are at a different level, be sure to account

for this difference in Step 4.

NOTE: The location indicated in Figure 2 is the

CDC’s (Center for Disease Control)

recommended mounting location. If the

specified mounting location is not

feasable, select another location

approved by the owner.

6-18"

(15.25 - 45.7cm)

6-18"

(15.25 - 45.7cm)

NOTE: POSITION SO THAT

SIEMENS LOGO IS AT

THE BOTTOM

(UPSIDE DOWN)

SEN0180R2

Figure 2. Measuring Distances on Inside Wall.

4. On the outside wall, mark off the distances from

the floor and the doorframe and locate the point

of intersection.

5. At the intersection point, drill a 2-inch diameter

hole in the outside wall. Take care to use the

intersection point as the exact center to ensure

the new hole will be completely concealed by

the outside cover plate.

6. Be sure the airflow tube is clear of debris and

then press it onto the black plastic mount on the

RPT circuit board, as far as it will go.

7. Temporarily attach the inside cover assembly to

the inside wall (oriented with the Siemens

Building Technologies logo at the top) and make

a pencil mark on the airflow tube where it exits

the outside wall. Then remove the inside cover

plate assembly from the inside wall.

8. Cut off the length of tubing that extends beyond

the pencil mark, and then remove any burrs from

the end of the tube. Place the rubber section of

the tubing on the newly cut end.

NOTE: Tubing runs longer than 12 inches will

degrade the signal and cause poor

performance. Do not use tubing longer

than the tubing provided.

9. Connect the pressure signal cable to terminals

1(+, Hot) and 3(−, Common) of the 3-pin

terminal block, then plug it into the receptacle on

the RPT (see Figure 3).

Page 2 of 3 Siemens Building Technologies, Inc.

Document No. 540-369

Installation Instructions

December 15, 2004

Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and

Siemens Building Technologies, Inc.

1000 Deerfield Parkway

Buffalo Grove, IL 60089-4513

U.S.A.

Your feedback is important to us. If you have

comments about this document, please send

them to [email protected]

11. Again, with the inside cover plate assembly

oriented so that its Siemens Building

Technologies logo is at the top; temporarily

attach the inside cover plate assembly to the

plaster ring of the electrical box.

10. Connect the power cable to pins 1(+) and 2(−) of

the 2-pin terminal block, and then plug it into the

power receptacle on the RPT (see Figure 3).

CAUTION:

Do not apply 24 Vac power until the

installation is fully completed. If power is

applied and one of the heat sinks makes

contact with the electrical box, damage will

occur to the RPT.

12. Level the top edge of the inside cover plate to

within ±2 degrees of horizontal. This is critical to

the performance of the RPT; if it is not level,

airflow within the sensor can be altered, leading

to inaccurate readings.

13. With the inside cover plate assembly held level,

tighten the four screws securely.

14. From outside the room, and with the outside

cover plate oriented so that the Siemens

Building Technologies logo is at the top, gently

push the foam rubber sleeve of the outside

cover plate assembly onto the end of the flow

tube.

+ -

1 2 3

24V TRUNK

PIN #1

PRESSURE SIGNAL

TO DPM

SEN0183R1

15. In the center of each screw hole in the outside

cover plate, make a pencil mark on the wall.

16. Remove the outside cover plate, locate the four

pencil marks and then install the four wall

anchors.

17. Reposition the outside cover plate assembly as

in Step 14 and secure it to the wall using the

four remaining screws.

The installation is now complete.

Figure 3. Wiring Connections. .

Document No. 540-369

Printed in the U.S.A.

Page 3 of 3

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