Instruction Manual

A 15 (14.8 to 15.2) Vdc excitation is available to power up to 2 transducers.
They can source 90 mA max. combined. It is labeled as +15 on the connectors,
If using this to power a remote transducer, connect this to the +exc. terminal of
the transducer. There are 3 potential analog inputs that can be measured, 0-5
Vdc, 0-10 Vdc and 4-20 mA.
For 0-5 Vdc or 0-10 Vdc inputs connect the +output of the transducer to terminal
labeled IN1, connect the common output of the transducer to the terminal
labeled COM. For 4-20 mA loops install a precision 250 ohm resistor between
the terminals labeled mA and COM. The monitor will be measuring the voltage
across this resistor as 1-5 VDC corresponding to 4-20 mA.
If you will be monitoring the status of a door position, wire the contacts labeled
DOOR (DI & COM) to the normally open contacts on a door jamb switch. The
monitor will show the door “warning” (when enabled) when the door is open.
The door jamb switch should be closed when the door is closed and open when
the door is open.
Note: For CE compliance a properly grounded shielding cable is required for analog input and output.
3.4.1 RELAY AND ANNUNCIATOR OUTPUT (labeled RELAY)
There is an SPDT dry contact available. When an alarm occurs the Normally
Open (NO) and the Common (COM) internal contacts will be closed. During no
alarm conditions the Normally Closed (NC) and COM are shorted.
This relay can also drive a remote Annunciator.
3.4.2 OPTIONAL REMOTE ANNUNCIATOR WIRING
SRAN wiring
In the gure below, the SRAN remote annunciator connector is at left, and the
SRCM connector is at right:
+15 VDC power: Connect the +15 VDC from the Relay Connector to terminal
A1 at the SRAN. This supplies 15V exc. to the Annunciator for powering the
circuit during normal conditions.
Power Return: Connect the COM of Relay Connector to Ground A2 at the
SRAN
On of the relay connector: Connect a short jumper between the +15 and RC,
this will connect the internal 15V supply to the common of the internal alarm
relay.
Connect the NO on the relay output to the +15 VDC trigger, A3 terminal on
SRAN.
When an alarm occurs and after the programmed alarm delay times out the
internal relay will supply 15 V to the Annunciator circuit to actuate the audible
buzzer and the red LED.
J1: SRAN
+15 VDC A1
Ground A2
+15 VDC
Trigger A3
COM
+15, +15 VDC EXC.
NO, normally open
RC, relay common
NC, normally closed
Monitor Relay Output
Jumper
Non-Setra Remote Annunciator
The SRCM can drive other annunciators that are powered by a 15V supply, 50
mA max current draw., and accept a 15V trigger.
Completing Finish Wiring
Connect all the electrical connectors matching the wiring connector with the
mates on the back of the unit.
Connect the pressure signals to the HIGH and LOW ports on the back of the
unit. The springs on the outside of the tubing are there to prevent buckling of
the tube. As you push the unit into the electrical box push the black instrument
tubing into the conduit tube or into the wall, Ideally the supplied silicone tube is
the only tubing in the electrical box after the unit is slid in as far as it will go.
Mount the unit cover to the electrical box using 4 of the supplied mounting
screws. Leaving screws slightly loose adjust the cover so that it is square.
Securely tighten so that the back of the cover is tight to the nish wall surface.
pushing switch to the left.
Once the installation has been planned, locate and mount the electrical box
and bring all power, earth ground, analog input, digital input, relay/annunciator,
analog output communications wiring into the triple gang box. If an SRAN
remote annunciator will be used then also mount a single gang electrical box in the
desired location and run wires to it.
3.3 NETWORK SETUP
The BACnet setup screen is enabled by pushing position 1 switch (labeled MAC) ot
the on (right) position. After conguration, the switch must be moved to the off (left)
position.
The Network Setup screen gives the option for the user to congure the Network
and other parameters which have to be read from the network.
BACnet conguration requires the user to congure the following parameters:
1. Baud Rate — User can select any one of the 4 standard Baud rates for RS485
communication from 9600, 19200, 38400, and 76800 by using the change button.
Auto baud features is not supported.
2. MAC Address — User can enter Medium Access Control address specic to this
device by touching on this eld. User can enter a value from 0 to 127 as this unit
is a BACnet master, address 128 to 254 reserved for 254 and 255 reserved for
Broadcast.
3. Device Instance — The Device Instance number must be unique within a
BACnet internetwork to identify each device. Instance numbers are dened as
22 bit long, in decimal instance number ranges from 0 to 4194,3,03. FFFFNDD is
the network addressing scheme, here FFFFrepresents the Facility code, N is the
number of the network in the building and DD ranges from 0 to 99 to represent the
individual device on the network.
4. APDU Timeout — Indicates the amount of time in milliseconds between
retransmission of an APDU requiring acknowledgement for which no
acknowledgement has been received. The default value for this property will be
3,000 ms and max can be 65535.
Save and Exit to save settings or cancel to cancel setting changes.
Once complete, disable the BACnet setup by moving the dip switch position 1 to off
(left) position.
After the unit returns to the menu screen disconnect the power to the unit and
reconnect in order to boot up with the proper MAC address and Device Instance.
The power can also be cycled by removing the Jumper JP1 and then reconnecting.
3.4 Plumbing (Rough In)
If the internal pressure sensor will be used then typically a Room Pressure Sensor
pickup (RPS) is installed in the monitored room and another one is installed in
the reference area (typically a hallway). ¼” nylon tubing is typically used to bring
the pressure signal from the point of measurement to the pressure inputs on the
SRCM.
Install a single gang electrical box inside the room. This will be used for the room
pressure signal ( room monitor pressure port labeled HIGH). Run ¼” tubing from
this electrical box to the 3 gang box that the pressure monitor (SRCM) will be
mounted to in the nish stage of the installation. Be careful in running the tubing
in a way that the tube is protected form being damaged either by being cut or
penetrated by screws or nails or being crimped so that the pressure signal integrity
is affected. Tape the open ends of the tubes closed to prevent contamination of the
inside of the tubing during construction.
Install a second single gang box on the corridor, ante room or other ref. pressure
area. This will be used for the low pressure side or reference side pressure signal.
Tubing should be run to connect this RPS to the 3 gang box and connected to the
monitors pressure port labeled LOW.
If an external sensor will be used then run the pressure signals (room and reference)
to the remote transducer.
Single gang electrical box housing the RPS
PLUMBING (FINISH) Use the following procedure for all room types positive,
negative or neutral:
The biggest problem that can occur during plumbing is kinking the often stiff
nylon ¼” tubing that is used for running pressure signals from the SRCM to the
monitored spaces. To prevent buckling and collapse of this stiff tubing inside
the electrical box use the supplied soft silicone tubing with external springs and
tubing adapters to transition from the eld tubing to the pressure ttings on the
SRCM.
Attach pressure tubing as follows:
1. Install one of the supplied strain relief adaptors onto the end of the
¼” eld tubing. Thread the tubes, with installed adaptor, through the
conduit opening at the bottom of the electrical box to minimize extra
tubing in the box.
2. Next push the open end of the soft silicone tubing onto the SRCM
pressure tube port labeled “HIGH”.
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
SRCM in the same way as for the “HIGH” port, except attach the
tube to the “LOW” port.
3.4 WIRING (Finish)
ANALOG (ANL) OUTPUT
COM COM
mA Current Output (4-20 mA)
Vdc Voltage Output (0-5 Vdc, 0-10 Vdc)
INPUTS (wired to door N.O. contact)
COM COM Door
DI Digital Input
COM COM Analog Input2
IN2 Analog Input2 (0-5, 0-10Vdc)
+15 15 Vdc
COM COM Analog Input1
IN1 Analog Input1 (0-5, 0-10Vdc)
+15 15 Vdc
Earth Ground
L1 24 Vac
L2 24 Vac
HIGH or room pressure tubing
contacts here
LOW or reference pressure tubing
connects here
POWER
RELAY
COM COM
+15 +15 Vdc
NO Normally Open
RC Relay COM
NC Normally Closed
COM
B (+)
A (-)
GND
REAR VIEW
View of rear of the monitor to show wiring and plumbing connections
The back of the Room Pressure Monitor has electrical connectors labeled with
their function. The mating electrical connectors (supplied) are color coded,
keyed, and labeled with the matching function.
Power, labeled POWER, L1, L2, ground symbol
Starting with the 3 pin Power connector.
Connect the 24 VAC lines to L1 and L2. Connect a ground wire, GND, from
a ground lug in the 3 gang box to the GND on the connector. The Monitor
operates at 18-32 VAC, 50/60 Hz and consumes 2.6 W nominal, 5 W max. Do
not turn on power until all other connections have been made.
Analog Output, labeled ANL OUT
If using the analog output and want Voltage output connect to the terminals
labeled VDC and COM.
If using the analog out and want a 4-20 mA signal, connect to terminals labeled
mA and COM. Connect this output to the BMS system or other monitoring
device.
Analog Input, labeled DOOR, INPUT2, INPUT1
There are 2 analog inputs available for remotely mounted transducer inputs.
These are INPUT1 and INPUT2.
159 Swanson Road Boxborough, MA 01719;Tel [phone]),
Fax: [phone]; email: [e-mail]; www.setra.com
SS-SRCM-INSTALL Rev. B 3/1/11
Mount the front cover assembly.
4.0 MAINTENANCE
The SRCM is designed to operate in an indoor environment, monitoring clean,
dry air.
Upon nal installation of the SRCM Room Pressure Monitor, no routine
maintenance is required. A periodic check of system calibration is
recommended. The SRCM is not eld serviceable and should be returned
if repair is needed (eld repair should not be attempted and may void
warranty). Be sure to include a brief description of the problem plus any
relevant application notes. Contact customer service to receive a return goods
authorization number before shipping.
CLEANING Important
Do not blow into the pressure tubing or ttings with mouth, compressed air, or
canned air. Such actions may permanently damage the pressure sensor. Do not
clean or wash-down the SRCM with industrial cleaners or solvents. The housing
may be wiped down with soap and water or isopropyl alcohol. The LCD may
only be cleaned with isopropyl alcohol. Do not immerse unit.
5.0 AGENCY ELECTRICAL STANDARDS
This device falls into CSA “Pollution Degree 2” for PCB insulation and CSA “Installation
Category 2”.
The SRCM meets the following requirements:
CSA Standard C22.2 No 0-M 91: General Requirements - Canadian electrical code Part 1
CAN/CSA C22.2 No. 0.4-04: Bonding of Electrical Equipment
CAN/CSA-C22.2 No. 61010-1-04: Safety Requirements for electrical equipment for
measurement, control and laboratory Use Part-1: General Requirements
ANSI/UL610-10-1 (Second Editiion): Safety requirements for electrical equipment for
measurement, control and laboratory use Part 1: General
Requirements
6.0 RETURNING PRODUCTS FOR REPAIR
When returning a product to Setra Systems, the material should be carefully packaged and
shipped prepaid to: Setra Systems, Inc.,159 Swanson Road,Boxborough, MA 01719-1304,
Attn.: Repair Department
To assure prompt handling, please refer to return instructions on our Web site at http://www.
setra.com/tra/repairs/cal_rep.htm.
7.0 WARRANTY AND LIMITATION OF LIABILITY
SETRA warrants its products to be free from defects in materials and workmanship, subject to the
following terms and conditions: Without charge, SETRA will repair or replace products found to be
defective in materials or workmanship within the warranty period; provided that:
a) the product has not been subjected to abuse, neglect, accident, incorrect wiring not our own,
improper installation or servicing, or use in violation of instructions furnished by SETRA;
b) the product has not been repaired or altered by anyone except SETRA or its authorized service
agencies;
c) the serial number or date code has not been removed, defaced, or otherwise changed; and
d) examination discloses, in the judgment of SETRA, the defect in materials or workmanship
developed under normal installation, use and service;
e) SETRA is notied in advance of and the product is returned to SETRA transportation prepaid.
Unless otherwise specied in a manual or warranty card, or agreed to in writing and signed by a
SETRA ofcer, SETRA pressure, humidity, and acceleration products shall be warranted for one
year from date of sale.
The foregoing warranty is in lieu of all warranties, express, implied or statutory, including but not
limited to, any implied warranty of merchantability for a particular purpose.
SETRA’s liability for breach of warranty is limited to repair or replacement, or if the goods cannot
be repaired or replaced, to a refund of the purchase price. In no instance shall SETRA be liable
for incidental or consequential damages arising from a breach of warranty, or from the use or
installation of its products. No representative or person is authorized to give any warranty other
than as set out above or to assume for SETRA any other liability in connection with the sale of its
products..
For all CE technical questions, contact Setra Systems, USA. EU customers may contact our EU
representative Hengstler GmbH, Uhlandstr 49, 78554 Aldingen, Germany (Tel: [phone];
Fax: [phone]).
JP1