Phoenix Advanced pressure monitor II Installation Manual
Advanced Pressure Monitor II
and Central Display Rough-In
Installation Guide
Copyright 2011, 2012, 2013
Phoenix Controls
Accel, Phoenix, Phoenix Controls, Usage Based Controls, UBC, Celeris, Theris, Traccel, Zone Presence
Sensor and ZPS are registered trademarks, and LabPro, MacroServer, MicroServer and Neutralizer
are trademarks of Honeywell International, Inc.
Phoenix Controls products are covered by one or more of the following U.S. patents:
5,251,665 5,304,093 5,545,086 D642894
and other patents pending.
The material in this document is for information purposes only and is subject to change without
notice. Phoenix Controls assumes no responsibility for any errors or for consequential damages that
may result from the use or misrepresentation of any of the material in this publication.
BACnet is a registered trademark of the American Society of Heating, Refrigerating, and AirConditioning Engineers (ASHRAE).
Printed in USA
APM2 Rough-In Installation Guide
Table of Contents
Section 1. Advanced Pressure Monitor II Rough-In Installation
1.1 Required Parts to be Supplied by the Installer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Parts Included with Your Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Installation Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.1 Wiring Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.2 Wiring Triple Gang Electrical Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.3 Plumbing Rough-In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.4 Use of External Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.5 Remote Annunicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Plumbing (Finish). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5.1 Power, Labeled POWER, L1, L2, Ground Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5.2 Analog Output, Labeled ANL OUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5.3 Analog Input, Labeled DOOR, INPUT2, INPUT1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.5.3.1 Measuring Analog Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.5.4 Optional Remote Transducer Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.5.5 Relay and Annunciator Output, Labeled RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5.6 Optional Remote Annunciator Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5.7 Third Party Remote Annunciator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.5.8 Completing the Finish Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Section 2. Fitting an APM2 in an APM100 Enclosure
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.1 What Is Included In Your Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.1.1 Not Included - Tools You Will Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.1 Turn Off Power To the APM100 Unit And Remove It From The Wall . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.2 Ensure Existing APM1 Enclosure Is Prepared For APM2 Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.3 Attach the Base APM2 Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.4 Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.5 Remotely Switching Alarm Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.6 Modified Pressure Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.7 Complete the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Section 3. APM2 Central Display Rough-In Installation
3.1 Required Parts to be Supplied by the Installer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 Parts included with Your Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.1 Wiring Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.2 Wiring Triple Gang Electrical Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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3.4.1 Power, Labeled POWER, L1, L2, Ground Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.4.2 Completing the Finish Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Section 4. Ancillary Product Specifications
4.1 Model 264 Pressure Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2 Model 267 Pressure Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3 Remote Annunciator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4 Pressure Pickup Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.5 Phoenix Recommended Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.5.1 MS/TP Specifications for Alternate Cable Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
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Advanced Pressure Monitor II Rough-In Installation
Required Parts to be Supplied by the Installer
Section 1. Advanced Pressure Monitor II Rough-In Installation
For the Advanced Pressure Monitor II (APM2) to be installed correctly, the rough-in phase of the project must
be completed properly. This section will outline the specific considerations the General Contractor must pay
attention to so that the final wiring and commissioning will go smoothly.
During rough-in installation, the field wiring and plumbing can be run in the walls and routed between the
triple gang electrical box, the Building Management System (BMS), door contact switch, remote sensors (if
applicable) power supply, earth ground and so on.
If you’re installing the APM2 monitor, continue to to Section 1.1 Required Parts to be Supplied by the Installer.
If you’re installing the APM2 Central Display, refer to APM2 Central Display Rough-In Installation on page 19.
1.1 Required Parts to be Supplied by the Installer
The following is a list of parts required and supplied by the installer for the APM2:
• Triple gang-double deep electrical box (RACO 697 or Appleton M3-350), quantity 1
• Green grounding screw, quantity 1
• Power (18 AWG recommended) and signal wiring (22 AWG recommended), as needed. Refer to Phoenix
Recommended Cables on page 33.
• 0.25" (6 mm) O.D. flame retardent polyethelyne control tubing (such as CPChem UL 1820)—to run from
the room(s) to the APM2 (maximum 250 feet [76.2 meters] length)
NOTE: Less that 10% or 10 feet (1.6 meters) of total control tubing can be used in a vertical rise. Maintain
tubing run on the same floor as the APM2.
• T-connectors
NOTE: Phoenix Controls recommends no more than five (5) T-connectors in a single run going to any
APM2.
• EMT conduit (if required by local code)
•24 Vac Transformer
• Door switch SPDT or SPST—normally open, as required
• Remote pressure transducers, as needed
• Remote Annunciators, as needed
The following is a list of part required and supplied by the installer for the Remote Annunciator and Pressure
Pickup Port:
• Single gang electrical box, as needed
• 0.25" (6 mm) O.D. flame retardent polyethelyne control tubing (such as CPChem UL 1820)—to connect
between the Pressure Pickup Port and the APM2
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Advanced Pressure Monitor II Rough-In Installation
Parts Included with Your Order
1.2 Parts Included with Your Order
The following are parts that are included in your order:
• Advanced Pressure Monitor II (APM2), including factory calibrated differential pressure sensor, quantity 1
• APM2 Faceplate, quantity 1
• Pressure Pickup Port (quantity 0, 1 or 2 - depending on order configuration)
• 0.25" O.D. Tubes, Silicone, with integrated springs and attached brass barbed couplings, quantity 2
• Mounting screws, 6-32 x 1/2 Phillips head, quantity 5
• Mating Electrical Connectors, Phoenix contact MC plug kit, quantity 1 with 3 green and 2 black connectors
1.3 Installation Overview
• Each APM2 consists of a room pressure pick-up, a reference space pressure pickup and a room pressure
monitor panel, which houses a differential pressure sensor.
• The two pressure pickup ports are installed in single gang electrical boxes, which are placed in the room
walls.
• Standard 0.25" (6 mm) O.D. flame retardent polyethelyne control tubing (such as CPChem UL 1820),
maximum 250 feet (76.2 meters) length, is run within the wall from the sensors to the monitor panel. In
some code jurisdictions, the tubing must be in EMT conduit. Tubing and conduit is provided by others.
NOTE: Less that 10% or 10 feet (1.6 meters) of total control tubing can be used in a vertical rise. Maintain
tubing run on the same floor as the APM2.
• Install in a triple gang-double deep electrical box (RACO 697, Appleton M3-350 or equivalent).
• Secure the triple gang-double deep electrical box to the stud(s) by using the mounting hole in the side of
the electrical box (see figure below for mounting hole location). Drive the mounting screws from the inside
of the electrical box into the wall studs to prevent sharp objects from protruding into the electrical box.
• Ensure the mounting is level and flush to the wallboard surface.
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APM2 Rough-In Installation Guide
Single Gang
Electrical Box
1/4" x .170 Tube Barb
(Conduit between
sensors and monitor
panel may be required.)
Reference
Pressure Pickup
Room
Pressure Pickup
APM2
NOTE: Connecting tubing and electrical
boxes are field-supplied.
Triple Gang Double Deep
Electrical Box
WALL MOUNT DIMENSIONS
Triple gang double deep electrical box—5.625" (220 mm) W x 3.5" (114.3 mm) H x 3.5" (63.5 mm) D
Single gang electrical box—2" (51 mm) W x 3" (76 mm) H x 3.5" (63.5 mm) D*
* Dimensions are approximate.
Advanced Pressure Monitor II Rough-In Installation
Installation Overview
Electrical Box
Mounting Hole
Figure 1-1. Wall Mount Installation Overview
1.3.1 Wiring Recommendations
APM2 Faceplate
Rough-in Electrical Box
- Raco 697
- Appleton M3-350
APM2
• All circuits must conform to the requirements of an NEC Class 2 (dry) circuit.
• Use multiple transformers instead of larger transformers when more than 100 VA is required.
• Each pressurization zone should have either a dedicated single-phase primary circuit, or a secondary circuit
disconnect.
•Refer to Phoenix Recommended Cables on page 33 for approved cable manufacturers and wire types.
• Use stranded wire for ease of installation.
• Follow good wiring practices:
• Locate cables away from sources of electrical interference (EMI/RFI).
• Do not run signal or communication cable in the same conduit or wire way as power cables.
• If signal cable must cross power cables place these at a 90-degree angle.
• Shield or drain wires, if required, should be wrapped with insulating tape to prevent contact with exposed
conductors or contacts.
• Maintain a consistent color code or polarity all the way through the wiring system.
• Power supply and signal isolation on I/O devices vary from manufacturer to manufacturer. Verify the
wiring device manufacturer’s recommendations for isolating power and signal common connections and
maintain polarity.
• Local and national electrical codes take precedence.
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Installation Overview
• Strip 0.25" (6.4 mm) of insulation from each conductor, twist the strands, insert the conductor fully into
the terminal block, and tighten the terminal.
•Test the wire connection by pulling on each conductor.
WARNING: Wiring must be performed by a licensed electrician according to local and state codes.
1.3.2 Wiring Triple Gang Electrical Box
USE ONLY THE KNOCKOUTS ON THE TOP OR BOTTOM AT THE BACK OF THE ROUGH-IN
ELECTRICAL BOX. The front knockouts will be inaccessible once the APM2 is installed. Strain relief and seal
box as required.
NOTE: Install power and signal wires into separate knockouts to avoid noise.
Figure 1-2. Wiring in the Triple Gang Electrical Box
1.3.3 Plumbing Rough-In
If the internal pressure sensor will be used, then typically a Pressure Pickup Port is installed in the monitored
room and another one is installed in the reference area (typically a hallway). 0.25" nylon tubing is typically used
to bring the pressure signal from this point of measurement to the pressure inputs on the back of the APM2.
Install a single gang electrical box anywhere inside the room, typically high on the wall in an inconspicuous area.
This will be used for the room pressure signal (room monitor pressure port labeled HIGH). Run 0.25" tubing
from this electrical box to the triple gang box that the pressure monitor will be mounted to in the finish stage
of the installation.
CAUTION: Be careful in running the tubing in a way that the tube is protected from being damaged by being cut
or penetrated by screws or nails or being crimped so that the pressure signal integrity is affected. Do
not tighten strain reliefs so that they crimp the tubing. Tape the open ends of the tubes closed to
prevent contamination of the inside of the tubing.
Install a second single gang box on the corridor, ante room or other reference pressure area. This will be used
for the low pressure side or reference side pressure signal. This will be run to the triple gang box and connected
to the APM2 pressure port labeled LOW.
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Advanced Pressure Monitor II Rough-In Installation
Installation Overview
If an external sensor will be used then run the pressure signals (room and reference) to the remote transducer.
Figure 1-3. Pressure Pickup Port Installation
1.3.4 Use of External Transducers
The APM2 has the option to use the internal pressure sensor or external pressure transducers (ordered
separately). If external pressure sensors are being used then no tubing needs to be run into the electrical box.
Instead the remote pressure transducer will be separately mounted, plumbed and wired. Only the wire for the
analog output of that transducer(s) will be run to the APM2. If two rooms are being monitored, you have the
choice to use the internal pressure sensor and an external (remote) transducer for the second room, or two
external remote transducers may be used and wired to the analog inputs in the back of the unit.
NOTE: See Phoenix Recommended Cables on page 33 for approved cable manufacturers and wire types.
Layout the system in terms of wiring:
• Power: 24 Vac, 9 VA
• Annunciator/relay: remote alarm wiring if being used
• Analog output: 0-5 or 0-10 Vdc or 4-20 mA.
• Analog Input wiring: there are two analog inputs that can be used to bring signals from remote pressure
transducers
• Digital Input: the digital input can be used as a door status indication, these would be wired to a door switch
mounted in the door jamb.
Once the installation has been planned, locate and mount the electrical box and bring all tubing, power, earth
ground, analog input, digital input, relay/annunciator, analog output communications wiring into the triple
gang box.
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Advanced Pressure Monitor II Rough-In Installation
Green LED
Red LED
Acknowledge
Switch
Audible
Alarm
Soft Silicon
Tubing with
Integrated
Springs
Plumbing (Finish)
1.3.5 Remote Annunicator
If an remote annunciator will be used, then mount a single gang electrical box in the desired location and run
wires to it.
Figure 1-4. Remote Annunciator
1.4 Plumbing (Finish)
Use the following procedure for all room types positive, negative or neutral.
The biggest problem that can occur during plumbing is kinking of the often stiff nylon 0.25" tubing that is used
for running pressure signals from the APM2 to the monitored spaces. To prevent buckling and collapse of this
stiff tubing inside the electrical box, use the supplied soft silicone tubing with integrated springs and tubing
adapters to transition from the field tubing to the pressure fittings on the APM2.
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Wiring
Attach pressure tubing as follows:
1. Install the supplied silicone tube (with integrated spring) and attached barbed tube adaptor onto the end of
the 0.25 field tubing. 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 soft silicone tubing onto the APM2 pressure tube port labeled "HIGH".
3. For the most pressure stable operation, a Pressure Pickup Port installed in the reference pressure area is also
recommended. In this case, install the Pressure Pickup Port in a hallway or reference space.
4. Next push the open end of the soft silicone tubing onto the APM2 pressure tube port labeled "LOW".
1.5 Wiring
ANALOG (ANL) OUTPUT
POWER
L1 24 Vac
L2 24 Vac
RELAY
COM COM
+15 +15 Vdc
NO Normally Open
RC Relay COM
NC Normally Closed
COM BACnet APM2-xx-ENG-BAC Products
B (+)
A (-)
GND
Earth Ground
THIS PAGE INTENTIONALLY LEFT BLANK.
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
HIGH or room pressure tubing
contacts here
REAR VIEW
LOW or re ference pressure tubing
connects here
Figure 1-5. Rear View of the APM2 (BACnet) Showing Wiring and Plumbing Connections
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Advanced Pressure Monitor II Rough-In Installation
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
connects here
LOW or re ference pressure tubing
connects here
POWER
RELAY
COM COM
+15 +15 Vdc
NO Normally Open
RC Relay COM
NC Normally Closed
COM NOT AVAILABLE
B (+)
A (-)
GND
REAR VIEW
Wiring
Figure 1-6. Rear View of the APM2 (Analog) Showing Wiring and Plumbing Connections
The back of the APM2 has electrical connectors labeled with their function. The mating electrical connectors
(supplied) are color coded and labeled with the matching function.
1.5.1 Power, Labeled POWER, L1, L2, Ground Symbol
Starting with the 3 pin Power connector:
1. Connect the 24 Vac lines to L1 and L2.
2. Connect a ground wire, GND, from the ground lug to the GND on the connector.
3. Install Connector.
The APM2 operates at 18-32 Vac, 50/60 Hz and consumes 2.6 W nominal, 9.6 W max.
1.5.2 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.
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+
-
+ 15 Vdc
IN1
COM
APM2
Setra Model 264
Current Output
249
Ohm
Advanced Pressure Monitor II Rough-In Installation
Wiring
1.5.3 Analog Input, Labeled DOOR, INPUT2, INPUT1
There are two analog inputs available for remotely mounted transducer inputs. These are INPUT1 and
INPUT2.
A 15 Vdc (14.8 to 15.2) excitation is available to power up to two 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 positive excitation terminal of the transducer.
1.5.3.1 Measuring Analog Inputs
There are three potential analog inputs that can be measured, 0-5, 0-10 and 4-20 mA.
• For 0-5 or 0-10 Vdc inputs connect the positive (+) 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 250 ohm resistor between the terminals labeled In1 or IN2 (whichever input
you’re going to) 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, then wire the contacts labeled DOOR 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.
1.5.4 Optional Remote Transducer Wiring
The figure below references the Setra remote sensors equipped with 4-20 mA output. The instruction booklets
supplied with the sensors cover both the
3-wire voltage output configuration and 2-wire current configuration. The figure below clarifies the 2-wire 420 mA connection between the Setra 264 or 267 and APM2 inputs. The same connection applies to IN2 (AI2).
If the APM2 output is configured for 4-20 mA on the AO, the users can use either 249 or 500 Ohm resistors
depending on whether they desire 1-5 or 2-10 Vdc.
Figure 1-7. Optional Remote Transducer Wiring
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Wiring
1.5.5 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.
1.5.6 Optional Remote Annunciator Wiring
In the figure below, the Remote Annunciator connector is at left, and the APM2 connector is at right.
Figure 1-8. Remote Annunciator Wiring Diagram
• To connect +15 Vdc power, connect the +15 Vdc from the relay connector to +15 Vdc, A1 at the Remote
Annunciator. This supplies 15 V exc. to the Remote Annunciator for powering the circuit during normal
conditions.
• To connect power return, connect the COM of relay connector to Ground, A2 at the Remote Annunciator.
• On of the relay connector, connect a short jumper between the +15 and relay connector. 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 the Remote Annunciator.
When an alarm occurs and after the programmed alarm delay times out, the internal relay will supply 15 V to
the Remote Annunciator circuit to actuate the audible buzzer and the red LED.
10
MKT-0262 MPC-1748 Rev 02/13
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