Setra SRPM Operating Manual

Model SRPM

Room Pressure Monitor

Installation and Operating Manual

Setra SRPM Room Pressure Monitor

The Setra SRPM Room Pressure Monitor is designed for critical low

differential pressure applications that require stringent pressure monitoring

and alarming. The SRPM can be congured to monitor positive, negative or neutral pressure in protected environments and hospital isolation rooms

per CDC guidelines. The SRPM is a complete system that includes a backlit

RGB LCD display with a graphic user interface, which enables access to pressure, security, calibration, and alarm setup. The touch-screen displays menus that guide the user through setup, as well as setting up password

protection. Red and green LED’s and a local audible alarm (with time delay feature) alert personnel to system status. The SRPM has a NEMA 1 (IP20)

rated re retardant plastic housing for indoor applications. True differential pressure is displayed with a resolution of .0001”. Setra’s patented very low pressure capacitance sensor is dead ended and avoids the potential for

cross contamination of the room and reference space as well as eliminating

drift that results from fouling of ow based sensors, which by nature have a ow path connecting the protected and reference spaces. Additionally there are 2 levels of password protection available as well as optional BACnet

MSTP communications.

Table of Contents

1.0 Intended Use ..................................................................................4

1.1 Specications ............................................................................4

1.2 SRPM Function .........................................................................5

2.0 Parts ..............................................................................................6

2.1 SRPM Included parts.................................................................6

2.2 SRAN Included parts ................................................................. 6

2.3 RPS included parts .................................................................... 6

2.4 Parts required and to be supplied by installer ...........................6

3.0 Installation ......................................................................................7

3.1 Wiring (Rough in).......................................................................7

3.2 Plumbing ...................................................................................9

3.3 Wiring (Finish) ........................................................................10

3.3.1 Alarm Relay ..........................................................................10

3.3.2 Remote Annunciator .............................................................10

3.3.3 Door status input .................................................................. 11

3.3.4 Analog Output ....................................................................... 11

3.3.5 BACnet .................................................................................12

4.0 Startup and Operation ..................................................................13

4.1 Menu Tree ...............................................................................13

4.2 Power Up ................................................................................. 13

4.3 Monitoring Screen ...................................................................13

4.4 Main Menu ............................................................................... 14

4.5 Setup Unit ................................................................................ 15

4.6 Setup Room.............................................................................17

4.7 Setup Alarms ...........................................................................18

4.8 Self Test ...................................................................................19

4.9 Calibration ...............................................................................20

4.10 BACnet Setup Screen ............................................................21

5.0 Remote Annunciator ..................................................................... 23

6.0 Maintenance ................................................................................. 24

7.0 Agency Electrical Standards .........................................................25

8.0 Wiring and Plumbing Overview ....................................................26

9.0 Menu Tree ....................................................................................27

1.0 INTENDED USE

The SRPM is designed to monitor critical environments by providing

differential pressure indication. Typically this is between a monitored room and a reference space such as a corridor or ante room. The unit

also provides monitoring, alarm and communications functions.

Installation must be indoors, Polution Degree 2, Installation Category II.

Failure to install per these instructions may impair the safety of the unit.

Typical Applications:

1. Hospitals – patient isolation and protection rooms, operating

suites, intensive care, and emergency rooms.

2. Pharmaceutical, semiconductor, precision manufacturing, and

clean rooms.

3. Laboratories – medical research, BSL (Bio safety labs), radiation,

vivarium, toxic metals and chemicals. Indoor use only.

1.1 SPECIFICATIONS

Service Air or nonconductive, nonexplosive gas

Accuracy ±0.5% F.S., ±0.25% FS optional

Operating Temperature Limits 32 to 120°F (0 to 50°C)

Operating Humidity Limits 5 to 95% Relative humidity (non condensing)

Altitude 2000 meters (max)

Thermal Eects ±0.03% F.S./ °F (± 0.05% F.S./ °C)

Overpressure ±15” W.C.

Supply Voltage Code V1 and V2 85-265 VAC, 50-60 Hz

Code A1 and A2 18-32 VAC, 50-60 Hz

Power Consumption (Voltage Output) 5 W.

Output Selectable 4-20 mA (2-wire), 0-5 VDC (3-wire), or

0-10 VDC (3-wire)

Loop Resistance (4-20mA Output) 0-510 OHMS

Electrical Connection Removable terminal block

Pressure Fittings Barbed ttings for 1/4” O.D. tubing

Housing Fire retardant plastic (NEMA 1, IP20 rated for indoor

applications)

Mounting Mounts to customer supplied 4” plaster ring

(mounts to 2-gang electrical box)

Dimensions 8½ H x 5.4½ W x 1.8½ D (20.3 H x 13.7 W x 4.1

Weight (approx.) 1.5 lbs (680 g)

Agency Approval

Communications

CE, CAN/CSA-C22.2 NO. 61010-1-04

BACnet MSTP ASC, optional, see setra.com

for detailed PICS statement

1.2 SRPM FUNCTION

The SRPM senses very low differential pressure using high accuracy capacitive sensor technology. The pressure difference for these

applications is the difference in static pressure between a critical

environment room and its surrounding reference area (usually a hallway

or another room). Maintaining and monitoring a static room pressure

difference ensures that the critical environment room is either protected or isolated from a surrounding environment. Protection strategy requires a net positive room static pressure difference, while isolation requires a net negative static pressure difference. The SRPM can be programmed to monitor either positive or negative room static pressure. Low pressure

sensing technology is coupled with multifunctional alarming and simple touch screen user interface with password security protection. The BACnet

communication option allows the device to communicate with other BACnet devices to allow the supervisory system to change conguration

setups and monitor alarms in an open network.

User Interface: LCD Display 128 x 128 COG module, with custom RGB

LED backlight and custom 4-wire resistive touch screen

RGB Backlight. The SRPM indicates the status of the room being

monitored using visual backlight color.

Color Status

Green Room Pressure is within alarm limits

Yellow Door is open. (Door input must be enabled)

Red Room Pressure is outside alarm limits and

alarm delay period has been exceeded and

room is not in “No Isolation” mode.

Visual Feedback: LEDs, green for normal, red for alarm

Audible Feedback: Beeper will sound when pressure is out of range and

alarm delay has timed out. Volume can be adjusted between 1 to 4 in

relative sound levels up to the maximum level specication of the beeper

of 85 dB at 4”. Audible alarm can also be disabled.

Quick Room Mode Change: Sometimes the room needs to be changed quickly from in use (Occupied) to out of use (No Isolation). This is

accomplished by using 2 levels of password protection. The Operator level allows access to change room modes but no other changes. The Supervisor Level allows full access to all menus. In No Isolation mode no alarms are generated even if the pressure is outside limits. To change modes see page 22, Room Mode Change, for directions to change modes.

2.0 PARTS

2.1 SRPM (Setra Room Pressure Monitor) INCLUDED

PARTS

Quantity

1 SRPM assembly

2 Barbed Couplings, with Silicone Tubing

4 6-32 x 1/2” Mounting Screws for connecting

the SRPM Base to the plaster ring

2.2 SRAN (Setra Remote Annunciator) INCLUDED PARTS

Quantity

1 Annunciator Assembly

2.3 RPS (Room Pressure Snubber) INCLUDED PARTS

Quantity

1 Room pressure snubber Assembly

2.4 Parts required and to be supplied by installer

MOUNTING AND WIRING

To mount and install properly, the following components are required:

NOT INCLUDED and required for each SRPM

Quantity

1 2-Gang Metal Electrical Box with Grounding Stud

1 4 inch Metal Plaster Ring

1 Door Switch SPDT or SPST, N.O., as needed

NOT INCLUDED and required for each remote annunciator and room pressure snubber

Quantity

1 1-Gang Electrical Box

1/4 “ tubing as required to connect between the RPS

(Room Pressure Snubbers) and the SRPM

3.0 INSTALLATION (See Section 8.0 for overview)

For 120/240 VAC Version, only

The SRPM is designed to be mounted on a standard double gang metal

electrical box using a 4 x 4 inch plaster ring adaptor. After the rough in wiring and plumbing is performed remove the cover and mount the baseplate to the plaster ring adaptor using the supplied 6-32 x 1/2” long mounting screws. Note: The plaster ring external mounting face needs to be positioned ush to recessed, relative to the surface of the wall. Also note the orientation of the 4 mounting screws in the plaster ring, as the plaster ring is rotated 90° from conventional mounting.

Note: In the following wiring sections, abbreviations are used (e.g. J1, P3). Please see section 8.0 for complete wiring diagrams with abbreviations.

CAUTION: Do not open or remove SRPM cover (tool required) with input power applied unless performed by a licensed electrician. “Hazardous Live” voltage is present

at connector J3 when power is applied. Please observe the warning symbol ( ) near the J3 power connector.

Electrical Box

4 x 4 inch Plaster Ring (Rotated 90°)

SRPM Metal Base

SRPM Cover

3.1 WIRING ELECTRICAL BOX (ROUGH IN)

Layout the system in terms of wiring: power, annunciator, analog output, BACnet, relay output and plumbing to connect to the monitored spaces

(pressure taps).

Bring all power, earth ground, signal, communications and analog output wiring into the 4x4 electrical box. Bring 1/4” O.D. tubing for 3/6” Barb tting into box.

In order to conform to the CSA safety standard the electrical installer must comply with the following earth ground instructions:

1. Pre-wire the electrical box with power (24 VAC or 120/240 VAC), and provide earth grounding to the electrical box. The safety ground path consists of four 6-32 x 1/2” metal screws that connect the SRPM metal base to the 4½ x 4½ metal plaster ring. The plaster ring must be grounded to the 4½ x 4½ electrical box by 2 metal mounting screws. The 4½ x 4½ electrical box must be connected to the building earth ground. In addition, the marked ground wire included in 120/240 VAC version, should

be connected to the electrical box earth ground connection. It is also

highly recommended to use armored cable (Type AC) for all the wiring in

applications where high levels of radio interference may be present.

2. For the 120/240 VAC version only, a switch or circuit-breaker should be included in the building installation. It is advised to indicate the location of the switch or circuit-breaker by means of a label on or nearby the installed device. The disconnection switch or circuit-breaker should disconnect all current-carrying con ductors. Any line-connected single-pole

switch should be connected to a terminal intended for connection to the ungrounded conductor of the supply circuit.

Power leads, analog output, door status, and annunciator wiring should be

14 to 22 AWG stranded wire.

BACnet suggested wiring is 22 AWG stranded wire in a shielded cable, a +,-, Gnd (S) and shield should be run. This can be 2 twisted pairs with a separate cable shield. One twisted pair is used for communications,

the second twisted pair can be used for communications ground and the

shield wire can be connected to the other device shield wires. For CE compliance, a properly grounded shielding cable is requried.

3.2 PLUMBING (ATTACHING PRESSURE TUBING)

Warning: Always attach tubing to the SRPM header and then place Header onto SRPM. This will prevent overpressure from crimped or collapsed tubes.

Use the following procedure for all room types: positive, negative or

neutral:

Typically a Room Pressure Snubber (RPS) is installed in the monitored room. Often stiff nylon ¼” tubing is used for running pressure signals

from the SRPM to the monitored spaces. To prevent buckling and collapse of this stiff tubing inside the electrical box, use the supplied soft silicone tubing and tubing adaptors to transition from the eld tubing to the pressure ttings on the SRPM.

Attach pressure tubing as follows:

1. Connect the 1/4 inch O. D. tubing running from the RPS (or other pressure connection from the monitored space) to the 2-gang electrical box for the SRPM. Install one of the supplied 1/4 inch male

to male barbed tube adaptors onto the end of the tube then push the

4” length silicone tube (supplied) onto the other end. Thread the tubes, with installed adaptor, through the conduit opening at the bottom of the electrical box.

2. Next push the open end of the silicone tubing onto the SRPM

pressure tube header (H1) port labeled “+”. Note: The header is an

Electro-Pneumatic (EP) assembly. “+” indicates (Positive) pressure, and “-” indicates negative or reference pressure.

3. For the most pressure stable operation, an RPS installed in the reference pressure area is also recommended. In this case, install the

RPS in a hallway or reference space. Attach the tube to the SRPM in the

same way as for the + port, except attach the tube to the “-” port on the pressure tube header. Tighten swivel ttings on the SRPM Header H1 assembly if they become loose, 9 in lb. max. Verify that the tubes are not buckled, which could close off pressure signal at end of installation.

Silicone Tubing

SRPM Header H1

Electrical Box

RPS Tubing

RPS Room Pressure SnubberPlumbing inside Electrical Box

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