Cool Air LBW-420-RLV User manual

Models
0 to 10% Vent Line SENSOR ONLY
LBW-420-RLV-% 24VDC (optional 100 to
240VAC)
FIRMWARE 12

Firmware version 12
Page | 1
Rev. 10-1 10-14-2022
Copyright © 2020 by Cool Air Incorporated. All rights reserved.
PROGRAMMING AND OPERATION ................................................
16
PROGRAMMING THE AMMONIA HI-ALARM AND LOW ALARM SET
POINTS ...................................................................................................
16
PROGRAMMING THE 4-20 MARANGE ...................................................
17
SETTING THE SERVICE MODE TIMEOUT ..............................................
18
SETTING THE AUXILIARY RELAY PAIRING...........................................
18
SETTING THE RELAY LATCHING............................................................
19
RE-SETTING A LATCHED RELAY ...........................................................
19
SPECIFICATIONS ................................................................................... 2
IMPORTANT—READ THIS FIRST ...................................................... 3
CAUTIONS ................................................................................................ 3
INTRODUCTION ..................................................................................... 3
STANDARD FEATURES ......................................................................... 4
PARTS DESCRIPTION............................................................................ 5
FRONT PANEL DISPLAY .......................................................................... 5
AMMONIA SENSOR .................................................................................. 6
FRONT PANEL-MOUNTED CIRCUIT BOARD ........................................... 6
SERVICE SWITCH (SERVICE MODE) ....................................................... 7
THE “ENTER”, “UP”, AND “DOWN” PUSHBUTTONS................................. 7
ROTARY SELECTOR SWITCH .................................................................. 7
ENCLOSURE-MOUNTED CIRCUIT BOARD............................................. 10
POWER (LBW-420) ............................................................................... 10
JUMPER J3, AMMONIA SIGNAL (LBW-420-1 ONLY)............................. 10
RELAYS.................................................................................................. 11
RELAY STATUS LEDS............................................................................ 11
EXTERNAL CONNECTIONS .................................................................... 11
4–20 MAANALOG OUTPUT ................................................................... 12
INSTALLATION AND SETUP ............................................................. 15
TABLE OF CONTENTS

Firmware version 12
Page | 2
Rev. 10-1 10-14-2022
Copyright © 2020 by Cool Air Incorporated. All rights reserved.
SPECIFICATIONS
ERROR CODES ....................................................................................... 19
MESSAGE CODES ................................................................................... 19
4-20 MAERROR INDICATION ................................................................ 20
TEST AND CALIBRATION .................................................................. 20
TESTING THE DETECTOR ...................................................................... 20
CALIBRATING THE DETECTOR.............................................................. 22
TECHNICAL SUPPORT ....................................................................... 24
WARRANTY ........................................................................................... 25
Ammonia Detection
Sensitivity
.1 to 10%
Display 0.8”, 7-segment LED, 2-digit
Controls
Service mode jumper
Enter, Up, and Down pushbuttons
Rotary selector switch
Jumper
Ammonia Sensor – Catalytic Bead
*Selectivity to NH3
*Linear output
*Long life
*Stable baseline
Relays
Alarm, pre-alarm, and auxiliary (see pairing aux relay)
Form C (SPDT), fail safe
Contact rating: 5A, 120 VAC or 24 VDC
Outputs
Contacts for: alarm, pre-alarm, and auxiliary relays, and external temperature sensor
4-20 mA DC, conforming to S50.01 ratings, Type 2L and Type 2H
Operating Temperature -40°F to 130°F
Operating Humidity 5% to 80% RH, non-condensing
Power Requirements
LBW-420-RLV-%
24Volts DC, 21.6 – 26.4, +/- 10%
0.5 Amps max.
Dimensions 9½” H x 8” W x 4½” D
Weight 6 lbs.
Enclosure NEMA 4X rated, UL listed
Pollution Degree 1

Firmware version 12
Page | 3
Rev. 10-1 10-14-2022
Copyright © 2020 by Cool Air Incorporated. All rights reserved.
PLEASE READ AND UNDERSTAND THIS SECTION
BEFORE INSTALLING AND OPERATING THE LBW-
420 DETECTOR.
CAUTION:
INTRODUCTION
WARNING: RISK OF ELECTRIC SHOCK. DO NOT
REMOVE COVER. NO USER SERVICEABLE
PARTS INSIDE. REFER TO QUALIFIED SERVICE
PERSONNEL.
AVIS: RISQUE DE CHOC ELECTRIQUE. NE PAS
ENLEVER LE COUVERCLE. AUCUN ENTRETIEN
DE PIECES INTERIEURES PAR L'USAGER.
CONFIER L'ENTRETIEN AU PERSONNEL
QUALIFIE.
After applying power, test the detector to ensure it is operating
correctly. Be sure the detector has been powered for at least 20
minutes before testing.
Do not store this manual inside the detector, as this
might result in damage to components from excessive
heat.
The Cool Air Incorporated LBW-420-RLV-% Detector is a state-of-
the-art ammonia leak detector that detects and displays ammonia
concentrations of .1 to 9.9%. It comes equipped with a long-life
ammonia sensor that has a quick and accurate response to ammonia
concentrations.
The Cool Air Incorporated LBW-420-RLV-% has a fully isolated
DC to DC power supply, allowing the LBW-420-RLV-% to be
IMPORTANT—READ THIS FIRST