SAFE-T-ALERT 25-741 - User Manual

RECREATIONAL VEHICLE (RV)
Combination Carbon Monoxide and Gas Alarm
USER’S MANUAL
Models 25-741 and 25-742
PATENT US 7,248,156 ALL RIGHTS RESERVED 25RV052013-1
ATTENTION: This user’s manual contains important Carbon
Monoxide (CO) and gas alarm installation, operation, troubleshooting
and warranty information. Read, follow, and keep this manual for
future reference.
NOTE: If you install or purchase this alarm for another person, give
this manual to that person.
IMPORTANT: It is recommended that this alarm is replaced after
five years of service. Record the installation / retail sale date in the
Owner’s Replacement Record section of this manual and also record
a replacement date. This unit has an End of Life (EOL) signal that
will sound after 5 years of use.
DUAL SENSOR TECHNOLOGY
The SAFE-T-ALERT™ 25 Series combination CO / Gas Alarm is an alarm that
combines into a single compact system, a powerful alarm that detects both
Carbon Monoxide (CO) and explosive Propane (LPG) gas. The 25 Series uses
the latest microprocessor technology combined with two electronic self-
cleaning sensors that operate independently of each other. The combined unit
can detect both CO and explosive gases simultaneously.
This detector is UL Listed as a CO and Propane gas detector for RV use.
Other explosive gases detected, but not tested by UL, include Acetone,
Alcohol, Butane, and Gasoline all of which you may have in your RV.
To prevent false alarms from brief “puffs” of gas the detector has a recheck
cycle before alarming. If high levels of gas remain during the recheck cycle,
the detector will alarm.
The electronic CO sensor in your SAFE-T-ALERT
TM
CO alarm is
very sensitive to CO gas. It will not react to safe levels of most other
gases.
WHY EVERY RV NEEDS A 25 SERIES CO AND GAS ALARM
Everyone is at risk for carbon monoxide poisoning! Particularly sensitive are
children, pregnant women, the elderly and people with lung or heart disease or
anemia! Carbon monoxide (CO) is an odorless, colorless gas that prevents the
blood from carrying oxygen to vital organs. CO is 200 times more likely to
replace oxygen in the blood. The Consumer Product Safety Commission
(CPSC) recommends using at least one CO alarm located outside of
sleeping areas. For the best security, locate a CO alarm in each sleeping
area. Safe-T-Alert CO alarms are available for secondary installations.
Propane gas can cause explosions! Using propane requires taking
safety precautions to avoid injury. LP gas is usually identified by an
unpleasant odor. Certain conditions may make some people unable
to detect this unpleasant odor. These conditions include advanced
age, colds, allergies, and the use of tobacco, alcohol or drugs that
may diminish the sense of smell.
ABOUT THIS ALARM
Because CO is a colorless, odorless, tasteless and highly poisonous gas; it
can endanger lives even at low levels of concentration. The CO Alarm
will alert you to potentially dangerous situations. The following
symptoms may be related to CO POISONING. Discuss these
symptoms with ALL household members and RV guests:
 Mild Exposure: Headaches, running nose, sore or watery eyes, often
described as “flu-like” symptoms.
 Medium Exposure: Dizziness, drowsiness, vomiting.
 Extreme Exposure: Unconsciousness, brain damage and death.
NOTE: Reported cases of CO gas poisoning indicate that while
victims are aware they are not well, they are disoriented. They are unable
to save themselves by exiting the RV or calling for assistance. Small
children and pets may be affected first.
Your SAFE-T-ALERT
TM
25 Series alarm helps protect your household
members and guests from CO produced while using your RV. CO gas is
produced when any type of fuel is incompletely burned. Potential sources
of CO in and around your RV can include gas or diesel engine exhaust,
portable space heaters, gas stoves and ovens, furnaces, defective engine
exhaust systems, portable grills, other nearby RVs, portable generators,
generator exhaust, and other propane-powered appliances. All are sources
of CO.
The following are also sources of CO that may affect your RV:
 Extended operation of unvented fuel burning appliances can build up
high CO levels.
 An idling vehicle in an open or closed garage.
 Temperature inversions can trap exhaust near the ground.
 CO build up can be caused by reverse/negative venting of fuel burning
appliances including; 1) Clogged, loose or faulty stacks or chimneys of
(clothes dryers, furnaces and water heaters, etc.), 2) wind direction
and/or velocity, 3) simultaneous operation of multiple fuel burning
appliances, and/or exhaust fans.
!
WARNING:
LIMITATIONS OF CO and GAS ALARMS
THIS ALARM WILL NOT WORK WITHOUT POWER. Some
reasons for no alarm power are; a blown or missing fuse, broken wire, a
faulty wire connection or circuit breaker, a discharged battery, cut lead
wires, or improper supply (+) or ground (-) connections.
THIS ALARM WILL ONLY INDICATE THE PRESENCE OF GAS
AT THE SENSOR. CO or explosive propane/ gas gases may be present in
other areas. MTI recommends installing CO alarms in all sleeping areas. Do
not block or cover the alarm with any object that can prevent a gas leak or
carbon monoxide from reaching the sensor.
THIS ALARM IS INTENDED FOR USE IN RV's. It is intended for
use in inside locations of a RV. It is not designed to measure compliance
with commercial and industrial standards.
THIS ALARM MAY NOT BE HEARD. The alarm’s loudness is
designed to meet or exceed regulatory standards; however, the alarm may
not be heard if alarms are located in remote locations or behind closed
doors. Persons who are hard-of-hearing, have consumed alcoholic
beverages, taken prescription, non-prescription or illegal drugs, may not
hear the alarm.
THIS ALARM IS DESIGNED TO DETECT CARBON MONOXIDE
AND PROPANE GAS. THE ALARM IS NOT DESIGNED TO
DETECT SMOKE, OR FIRE.
THIS ALARM MAY NOT ALARM AT LOW CO LEVELS - It is not
designed to measure compliance with the Occupational Safety Health
Administration (OSHA) commercial or industrial standards. Individuals
with medical problems may consider using warning devices, which provide
audible and visual signals for CO concentrations under 30 ppm.
THIS ALARM IS NOT A REPLACEMENT FOR INSURANCE.
Always be sure your RV is fully insured.

Summary

RV Combination Carbon Monoxide and Gas Alarm Users Manual

Manual Importance and Usage

Manual contains installation, operation, troubleshooting, and warranty info. Keep for reference.

Alarm Replacement and End of Life Signal

Alarm has a 5-year service life and an EOL signal. Record replacement date.

Dual Sensor Technology

Combines CO and LPG detection using microprocessor and two self-cleaning sensors.

Importance of CO and Gas Alarms in RVs

Explains risks of CO poisoning and gas leaks in RVs.

About the CO;Gas Alarm

Details CO's nature and symptoms of poisoning.

Limitations of CO and Gas Alarms

Outlines what the alarm cannot do, including power dependence and detecting smoke.

Protecting Your Family with the Alarm

Proper Installation and Testing

Emphasizes proper installation and weekly testing for effective protection.

Regular Visual Inspections

Inspect fuel-burning equipment and pilot flames for safety.

Engine and Generator Maintenance

Proper tuning of engines and generators reduces CO production.

Gas Leak Detection and Response

Immediate action for suspected gas leaks is crucial.

Alarm Installation Locations

Kitchen Area Installation

Install near potential gas leak sources like furnaces or stoves.

CO Alarm Placement Outside Sleeping Areas

CPSC recommends CO alarms outside sleeping areas for safety.

Floor Proximity for Installation

Install alarm 4-20 inches off the floor for optimal detection.

Prohibited Installation Locations

Avoid Obstructions to Sensors

Do not install where furniture or drapes can block gas flow.

Avoid Drafty Areas and Openings

Keep away from windows, doors, and vents that cause drafts.

Avoid Outside Wall Installation

Do not mount the alarm on an exterior wall.

Avoid Switch-Controlled Power

Do not connect to a switched power source or circuit breaker.

Installation Instructions

Installation Warning and Warranty

Failure to follow instructions can cause malfunction and void the warranty.

Power Supply and Wiring

Connect to a 12 VDC fused circuit using 14-18 GA wire, max 15 amps.

Wiring and Connection Guidelines

Connecting to Power Source

Connect to a non-switched circuit; main disconnect is acceptable if RV is unoccupied.

Model 25-741 Installation

Specific wiring instructions for model 25-741 including power leads.

Model 25-742 Installation

Specific wiring and mounting instructions for model 25-742.

Alarm Testing Procedure

Testing Frequency and Importance

Test weekly, after storage, and before trips to ensure proper function.

Testing Methods and Limitations

Test button checks circuits; use specific test gas for sensors.

Alarm Operation and Indicators

Details normal operation, warm-up periods, and indicator light behavior.

Alarm Signals and Operation

CO Alarm Signal

Describes CO alarm sound (4 beeps) and visual (red LED) signals.

Propane Gas Alarm Signal

Describes propane alarm sound (steady tone) and visual (flashing red LED) signals.

Malfunction;Service Signal

Indicates malfunction with alternating Red/Green LED and periodic beeps.

End of Life Signal

Indicates end of service life with flashing Red/Green LEDs and periodic beeps.

Trouble-Shooting Guide

Common Alarm Problems and Solutions

Lists common issues like LED off, no sound, or locked alarm and their causes.

Malfunction Alarm LED Troubleshooting

Addresses Red/Green LED with beeps every 15 seconds.

End of Life Alarm Reset

Procedure to reset the end-of-life signal temporarily.

Alarm Care and Maintenance

Routine Alarm Testing

Reiterates weekly testing of the alarm for functionality.

Cleaning the Alarm Cover

How to vacuum and clean the alarm cover without damage.

Avoid Direct Spraying on Panel

Warning against spraying cleaning agents directly on the front panel.

Emergency Procedures

Gas Alarm Emergency Response

Steps to take during a gas alarm, including shutting off gas and evacuating.

CO Alarm Emergency Response (USA)

Immediate actions for CO alarms in the USA, including evacuation and calling services.

CO Alarm Emergency Response (Canada)

Immediate actions for CO alarms in Canada, including evacuation and calling services.

Product Specifications and Warranty

End of Life Signal Details

Explains the 5-year service life and EOL signal reset procedure.

Technical Specifications

Lists models, power, temperature, humidity, and alarm trigger levels.

Limited Products Warranty

Details the one-year limited warranty and its exclusions.

Warranty Return Procedures

Instructions for troubleshooting and returning the product for service.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The SAFE-T-ALERT™ 25 Series is a combination Carbon Monoxide (CO) and Propane (LPG) gas alarm designed for recreational vehicles (RVs). This device integrates two electronic self-cleaning sensors that operate independently, allowing for simultaneous detection of both CO and explosive gases. It is UL Listed as a CO and Propane gas detector for RV use, and can also detect other explosive gases such as Acetone, Alcohol, Butane, and Gasoline, though these are not UL tested.

Function Description:

The alarm provides both audible and visual signals to alert users to the presence of dangerous levels of CO or explosive gases.

• CO Alarm: When CO levels exceed 35 ppm, the Red CO LED will flash, and the alarm will sound 4 "BEEPS" followed by a 5-second silence. This cycle continues until the TEST/Mute button is pressed and the RV is ventilated. The Red light remains ON until CO has cleared or the alarm reactivates if CO is still present.
• Propane Gas Alarm: Upon detection of dangerous levels of propane gas, the Red LED will flash, and a steady tone will sound. The alarm continues until the Test/Mute switch is pressed and the RV is ventilated. The Red Gas LED will continue to flash until the gas has cleared or the alarm reactivates if gas is still present.
• Simultaneous Alarms: If both gas and CO are detected simultaneously, the gas alarm takes higher priority. The gas LED will flash red, and the beeper will sound. The CO LED will be a solid Red until CO is ventilated.
• Malfunction/Service Signal: If a malfunction is detected, the Gas LED will remain off, and the Operational/CO LED will alternate Red/Green. The alarm will sound once every 15 seconds. Pressing the Test/Mute button may clear the signals. If not, and battery voltage is not low, the unit requires service or warranty replacement.
• End of Life (EOL) Signal: After five years of service, the alarm will signal its end of life with the LED flashing RED RED GREEN GREEN and a beep every 25-30 seconds. This signal can be reset for up to 72 hours (3 days) for a total of 30 days, after which the alarm must be replaced.

Important Technical Specifications:

• Models: 25-741 and 25-742
• Power Supply: 12 VDC
• Nominal Current Draw: 108 mA
• Operational Temperature: -40° F to +150° F (-40° C to +66° C)
• Relative Humidity: 15% (+/-5%) to 95% (+/-4%)
• Audible Output: 85 dB @ 10 feet
• Gas Alarm Trigger: < 25% of the LEL of Propane, with an 8-second alarm delay.
• CO Alarm Trigger: <15 Minutes @ 400 ppm
• Case Dimensions:
  • 25-741: 3.5" W x 2.5"H x 1.25"D (Mounting Bracket .25"D)
  • 25-742: 4.5"W x 3.25"H x 1.25"D
• Warranty: 1 Year Limited
• Testing Laboratory Standard: ETL - Intertek, UL 1484, Fourth Edition
• Low Power Operation: Operates normally down to 7 VDC. Do not operate below 7 VDC.
• Brownout Protection: Tolerates short power interruptions and brownouts where circuit voltage drops as low as 1VDC. If prolonged, the unit resets.

Usage Features:

• Installation:
  • Install at least 4 inches but not more than 20 inches off the floor.
  • Recommended location is in the kitchen area near potential gas leak sources (furnace, refrigerator, stove, oven). For multiple gas leak sources in separate areas, installing an alarm in each area is recommended.
  • For CO detection, the Consumer Product Safety Commission recommends installing a CO alarm outside sleeping areas. The 25 series complies with this.
  • DO NOT INSTALL: behind furniture, drapes, in closets, or areas blocking gas flow; within 12 inches (30cm) of opening windows, exterior doors, heating or return vents, or other drafty areas; on an outside wall; on a wall switch-controlled power line, ground fault circuit, or circuit breaker.
  • Connect to a properly fused circuit (maximum 15 amps) with 14 GA to 18 GA wire.
  • For model 25-741, install the back plate, drill a ¼" hole for power leads, connect RED (+) to fused circuit and BLACK to Ground (-), then slide the detector onto the mounting plate.
  • For model 25-742, cut a 3.5" W x 2.75" H hole for recessing, connect RED (+) to fused circuit and BLACK to Ground (-), then fasten the unit to the wall using the two screw holes.
  • Allow 10 minutes for warm-up after power connection before testing.
• Test Procedure:
  • Test after RV storage, before each trip, and at least once per week during use.
  • Press and hold the TEST/Mute button for 1 second. The GREEN indicator light should change to RED, and the horn should beep 4 times. The Gas LED should also blink Red.
  • The TEST button only tests the alarm circuit, not the sensors. Propane or Butane gas can be used to test the gas sensor (may take up to 10 seconds).
  • For the CO sensor, use a can of SAFE-T-ALERT CO Test Gas to test the 400 ppm calibration point. Do not try to generate CO.
• Warm-up Period:
  • CO sensor requires a 10-minute initial warm-up, during which the GREEN LED flashes. The unit cannot go into a CO alarm during this period.
  • Gas alarm has a 1-minute warm-up period. It cannot go into a gas alarm during this period.
• CO Alarm Procedures (USA):
  1. Operate the Test/Mute button.
  2. Call emergency local service (fire department or 911).
  3. Immediately move to fresh air (outdoors or open door/window). Account for all persons. Do not reenter until emergency responders arrive, premises are aired out, and alarm returns to normal operation.
  4. If alarm reactivates within 24 hours, repeat steps 1-3 and call a qualified appliance technician to investigate CO sources.
• Gas Alarm Procedures:
  1. Turn off all gas appliances (stove, heater, furnace, refrigerator, etc.), extinguish all flames and smoking material.
  2. Press the Test/Mute switch. DO NOT DISCONNECT POWER.
  3. Evacuate the RV, account for everyone, and leave doors and windows open.
  4. Turn off the propane tank valve.
  5. Determine and repair the source of the leak; get professional help if necessary. Do not re-enter until the problem is corrected.

Maintenance Features:

• Replacement: Recommended after five years of service. Record installation/retail sale date and replacement date. The unit has an End of Life (EOL) signal after 5 years.
• Weekly Testing: Test the alarm weekly.
• Cleaning:
  • Vacuum dust off the alarm cover at least once a year (more frequently in dusty locations) using a soft brush attachment.
  • Clean the alarm cover when dirty by hand with a cloth dampened in clean water, then dry with a soft cloth.
  • DO NOT SPRAY CLEANING AGENTS OR WAXES DIRECTLY ONTO THE FRONT PANEL, as this may damage the sensor or cause malfunctions.
• Visual Inspection: Regularly check all fuel-burning equipment (gas water-heaters, kitchen gas stoves, space heaters, gas dryers, pilot lights) for blue pilot flames. Inspect engine and generator exhaust systems for cracks.
• Professional Maintenance: Have engine and generator professionally maintained. A poorly tuned engine/generator produces more CO.

SAFE-T-ALERT 25-741 Specifications

General

Brand	SAFE-T-ALERT
Model	25-741
Category	Security System
Language	English