FORENSICS DETECTORS FD-4A User manual

BASIC RESIDENTIAL COMBUSTION ANALYZER
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BASIC
RESIDENTIAL
COMBUSTION
ANALYZER
Model: FD-4A
CONFIGURATION &
COMPONENTS
INCLUDED
Serial #:
CO Sensor
O2 Sensor
Detector 4A
Pump
NOx Filter
Water Trap + Magnet
Hose Assembly
Calibration Cap
Cap Screw
Stainless Probe
Hard Carry Case
110V Wall Charger
Charger USB Cable
Magnet Attachment
QC/CAL Certificate
User Manual
Other

BASIC RESIDENTIAL COMBUSTION ANALYZER
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PRODUCT FEATURES
•Measures CO (ppm) & O2 (%)
•Calculates COAF (air free) & EA (excess air)
•Comes with a Water Trap, Particle & NOx filters
•For residential combustion AND / OR ambient applications
•Strong magnet for easy mount on appliances
•Rechargeable Lithium-ion battery via easy USB charger
•Professional aluminum hard-case
•Electronic Pump with Stainless Steel Probe
PRODUCT COMPONENTS
1. Analyzer - CO & O2 sensors with a niobium magnet for mounting.
2. Electronic Pump with Stainless Probe.
3. Hose assembly. 3 feet of silicone tubing, Water trap, particle and NOx filters with
sensor cap. The NOx filter removes cross-interfering acid gases to minimize CO
sensor interference.
4. Aluminum Hard-case
5. Screw to mount sensor cap to the Analyzer
6. USB Charging cable
7. USB Charger
8. Analyzer and Pump Aluminum Case
9. Calibration Certificate
10. Manual (this document)
USER TIPS
-Ensure the analyzer and pump are stored well within specifications.
-When using the analyzer, condensation may occur and the water trap will
slowly fill with water. Keep track of this. Empty as necessary. Always empty
before storing and retiring the unit after working. Some condensation may
occur in the electronic pump. Run the pump with fresh air to ensure
condensation within the pump has been removed.
-The NOx filter will last for the life of the detector.
-The sensors have a rated life of 2 years. If well taken care of, they can last
longer (up to 3 years) but will require more frequent calibration.
-Please email FORENSICS DETECTORS if any part requires replacement.
-FORENSICS DETECTORS does not offer sensor replacement. Given the
price point of the detector and cost of the sensor parts, shipping and
calibration, it is simply not economically viable to allow for customer
sensor replacement – and easier to replace the detector. Both pump and
detector can be separately purchased, email us.
-If unsure, always ask. Email us: [e-mail]

BASIC RESIDENTIAL COMBUSTION ANALYZER
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1. INTRODUCTION
You have purchased the BASIC RESIDENTIAL COMBUSTION ANALYZER by
FORENSICS DETECTORS. The detector is factory calibrated. This product is a
BASIC analyzer - no frills, simple use, designed to simply get the job done with no
messing around. Turn ON and GO. This detector is made with a robust design
using high quality electrochemical sensors made in the UK. This detector was
made for RESIDENTIAL use for HVAC technicians, contractors, engineers,
energy inspectors, plumbers and others that need to analyze combustion and
flue gases (from natural gas or propane). In addition, the detector can be used
as an ambient air quality detector. The analyzer contains both CO and O2
sensors. The analyzer calculates COAF (CO Air Free) and Excess Air (EA) only
when O2 is less than 20%. COAF & EA equations are calculated as follows:
COAF = (COmeasured x 20.9) / (20.9 - 02measured)
EA% = [[20.9/ (20.9 - 02measured)] – 1] x 100
2. QUICK SETUP
1. Ensure all components included.
2. Ensure analyzer/pump are fully charged.
3. Connect silicon tube with bottom of pump
(pump outlet). Connect pump probe. Attached
sensor cap on the analyzer with screw.
4. Double check all tubing is well connected and
in place.
5. Check water trap, ensure it is empty of water,
if not, open and dry it out.
6. Turn ON pump and detector. When ready to
sample press the ON/OFF button on the
pump and gas will be drawn from the probe
point.
7. Read this manual and familiarize yourself with
the operation of the devices & components.
8. Follow best practices when selecting
combustion gas sample location for
residential appliances. Follow local codes and
appliance manufacturer instructions.

BASIC RESIDENTIAL COMBUSTION ANALYZER
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3. SPECIFICATIONS
ANALYZER SPECIFICATIONS
Warranty: 1 year limited warranty
Sensor: Electrochemical Sensor CO & O2
Calculated COAF:CO Air Free (COAF) only when O2 < 20%
Calculated EA:Excess Air (EA) only when O2 < 20%
Sensor CO & O2 Life: 2 years
Detection Range: CO (0-1000ppm), O2 (0-30%vol)
Error: <±5% of reading
Response Time: <60 seconds
Storage/Operating Temp: 0-122F
Storage/Operating Humidity: <95%RH
Battery: DC3.7V Li–Ion battery 2000mAh
Operation Time: >12 hours
Dimension/Weight: 5 x 2.7 x 1.7 inches, 230grams (7.8 oz.)
Rating: ATEX certified EXiaIICT4. IP65 certified.
PUMP SPECIFICATIONS
Warranty: 1 year limited warranty
Storage / Operating Temp: 32°F - 140°F
Storage / Operating Humidity: <95%RH
Operating voltage: DC3.7V Li battery 1500mAh
Flow rate: 0.5 LPM, 500 cc/min
Weight: 186g (6.6 oz.)
Probe Length: 8 inches
Pump Device: 9 x 2.5 x 1 inches
Noise: <60dB
CARRY CASE SPECIFICATIONS
Weight: 700g (2lb and 6 oz.)
Dimension:11 x 7 x 3 inches

BASIC RESIDENTIAL COMBUSTION ANALYZER
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4. ANALYZER OPERATION
When the analyzer turns ON, it shows the main detection screen with CO, O2,
COAF and EA measurements. When in this main mode of operation, the options
are as follows:
ON/OFF: Press POWER button for 3 seconds. After self-check, gas detection
begins and levels are show. Backlight in ON for 15 secs then turns off.
UP ARROW: When pressed will show date, time and battery life remaining. The
detector has a built-in lithium battery and can be charged via micro-USB. Before
charging, TURN OFF the detector to avoid any potential damage. During
charging, the detector cannot detect gas.
DOWN ARROW: No function when not in MENU mode. Press anytime to
momentarily turn on the backlight.
MENU MODE: Quickly press POWER button to enter main MENU OPTIONS. Use
UP and DOWN buttons to make your selection, then press POWER button to
select. Menu option selections are as follows:
-ZERO SET: User operation for ZERO calibration
-ZERO TUNE: Factory operation only
-GAS CHECK: User operation for SPAN calibration
-ALARM RECORD: User operation for ALARM record
-LOW ALARM: User operation for ALARM setting
-HIGH ALARM User operation for ALARM setting
-TIME SET: User operation for TIME setting
-EXIT Exit to main menu
-SHUTDOWN Shutdown the Analyzer
-CHANNEL SET: Factory operation only
ZERO SET: Use this option when you need to undertake a ZERO calibration. This
enables a ZERO baseline for maximum accuracy. For the CO sensor, simply
expose it to fresh air. For the O2 sensor, use a pure Nitrogen gas bottle source
with a flow of 0.5 LPM. Expose to ZERO air for 1 minute using a certified gas
bottle delivered to the sensor via the sensor cap provided. Select Gas to ZERO
with up/down arrow. Then press SAVE to register the Zero reading. If you see
the CO sensor is wandering (above 2ppm) after 2 minutes exposed to fresh air,
undertake a ZERO calibration of the CO sensor. If the CO sensor wanders 1 or
2ppm, it is normal.

BASIC RESIDENTIAL COMBUSTION ANALYZER
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GAS CHECK (SPAN Calibration): Enter passcode 1111. Enter the value of CAL
calibration CO gas concentration you will expose. Expose to CAL air for 2 minutes
using certified gas. For O2, simply expose the detector to fresh air, having
20.9% of O2. For CO gas, maintain a flow of about 0.5L/min when using CO gas
bottles and use the sensor cap provided to deliver the gas to the detector. Save
to register reading. If you are mostly concerned with low level CO detection, we
advise to calibrate using 100ppm. If you undertake detection with the full CO
spectrum range (0-1000ppm) we advise to use 500ppm CO calibration gas.
Please note if O2 sensor wanders from 20.9% in a range ±0.4% it is normal.
ALARM RECORD: Shows the time-stamped history of alarm activation.
LOW ALARM: Low Alarm point setting. Follow screen instructions. Move cursor
and adjust alarm levels.
HIGH ALARM: High Alarm point setting. Follow screen instructions. Move cursor
and adjust alarm levels.
TIME SET: Follow screen instructions. Move cursor and adjust time digits as
desired.
ESC: Exits menu options and back to normal operation.
HELPFUL TIPS:
-Analyzer alarms are used predominantly for ambient measurement. They are
not commonly used for combustion analysis. If the analyzer is used for
combustion analysis, the alarms can be set maximum range to prevent
alarming, otherwise simply ignore the LED alarm flash.
-We deliberately made this analyzer easy to use with only “BASIC” features for
a non-complex user experience.
-When the detector reads changing CO or O2 concentration it maintains the
backlight ON.
-COAF and EA are only displayed if the O2 reading is less than 20%.
-Do not use this detector for life threatening CO or O2 air quality alarming
since the detector does NOT have audible or vibration alarming.
-To use the detector as an ambient air quality detector, simply remove the
sensor cap and measure ambient levels without the pump/probe assembly.
Otherwise keep the sensor cap ON, connect the hose and pump assembly
and detect ambient air as normal, just like a combustion analysis.

BASIC RESIDENTIAL COMBUSTION ANALYZER
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MAIN DETECTOR DISPLAY
COAF & EA engages after O2 less than 20% which then
confirms a flue gas environment and makes the COAF and EA
applicable and relevant.
As measured O2
As measured CO
COAF ppm
Excess Air %

BASIC RESIDENTIAL COMBUSTION ANALYZER
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5. PUMP OPERATION
The pump draws/sucks air from the top (input port) and expels it from the
bottom (output port). Screw the stainless probe to the top inlet port. Turn ON.
The main pump LCD screen shows temp, time and battery level. A large triangle
represents the pump power level. If a pump load is detected that slows down the
pump flow, the triangle power level will reduce accordingly.
ON/OFF: Press POWER button for 5 seconds. After self check and warm up,
normal pumping begins and pump flow power level is show. Backlight is ON for
20 secs then turns off.
PUMP ON / PUMP OFF: Quickly press POWER button to turn ON/OFF the
pump. When the PUMP is OFF, the RED LED with FLASH, indicating PUMP OFF.
When ready to sample combustion or ambient air gas, press this button to
begin testing.
SET TIME / DATE: Press UP button to edit TIME and DATE. Quickly press
ON/OFF button to scroll to next figure for edit. When done, hold ON/OFF button
for 3 seconds to SAVE and go back to the main screen.
BACKLIGHT: When the pump operates the backlight will turn off after 20
seconds of no button operation to preserve battery power. To turn ON backlight,
simply press any button quickly.
STATUS: Press DOWN button to see operation codes (used by manufacturer
technicians).
6. BATTERY CHARGING
The ANALYZER and PUMP have each a built-in lithium battery and can be
charged via micro-USB port. Any USB charger will work, ensure >1.0A for fast
charging. Before charging, TURN OFF the pump OR analyzer to avoid any
potential damage. Charging takes about 4hours for both ANALYZER and PUMP.

BASIC RESIDENTIAL COMBUSTION ANALYZER
FORENSICS DETECTORSTM
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FORENSICS DETECTORSTM
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BASIC RESIDENTIAL COMBUSTION ANALYZER
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** WARNING**
ØKEEP DETECTOR AWAY FROM ELECTROMAGNETC & MAGNETIC
INTERFERENCES (i.e. PHONES & MAGNETS)
ØSTORE DETECTOR WITHIN SPECIFICATIONS
ØIF UNWELL, SEEK CLEAN AIR & MEDICAL ATTENTION.
ØFOLLOW INSTRUCTIONS AS THE DETECTOR IS VERY SENSITIVE
ØTO ENSURE ACCURACY, CALIBRATE DEVICE AT LEAST EVERY 6 MONTHS
ØCHECK AND SET ALARM LEVELS APPROPRIATELY TO AVOID HARMFUL
EXPOSURE - CONSULT WITH YOUR SAFETY OFFICER OR WITH
STATE/FEDERAL AGENCIES.
ØDO NOT TOUCH PROBE AFTER A FLUE GAS MEASUREMENT, IT IS VERY HOT
AND BURNING TO SKIN WILL OCCUR
ØTAKE ALL PRECAUTIONS WHEN UNDERTAKING COMBUSTION
MEASUREMENTS AS TO NOT ALLOW TOXIC GASES INTO YOUR
BREATHABLE ZONE
ØKEEP AWAY FROM DUST & PARTICULATE AND NEVER EXPOSE TO
CONCENTRATED VAPORS, HARSH CHEMICALS OR EXTREMELY HIGH
CONCENTRATION LEVELS AS IT MAY POISON THE SENSOR
ØSENSOR LIFE IS 2 YEARS FROM RECEIPT.IF DEVICE HAS BEEN TAKEN
CARE OF THE SENSOR CAN LAST LONGER, BUT MAY REQUIRED
CALIBRATION MORE OFTEN TO OPERATE WITHIN PERFORMANCE
SPECIFICATIONS.
ØDO NOT USE THIS DETECTOR FOR LIFE THREATENING APPLICATIONS SINCE
THIS DETECTOR DOES NOT HAVE BUZZER OR VIBRATION ALARMS, THEY
HAVE BEEN DELIBERATELY REMOVED FOR THE COMBUSTION MODEL FD-
4A. THIS IS NOT A PERSONAL PROTECTION DEVICE. BE ATTENTIVE.

BASIC RESIDENTIAL COMBUSTION ANALYZER
FORENSICS DETECTORSTM
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WARRANTY DISCLAIMERS
This product is covered by a one year limited warranty.
This warranty does not cover damage resulting from accident, misuse,
disassembly, abuse or lack of reasonable care of the product, or applications not
in accordance with the user manual. It does not cover events and conditions
outside of our control, such as Acts of God (fire, severe weather etc). It does not
apply to retail stores, service centers or any distributors or agents. We will not
recognize any changes to this warranty by third parties. We shall not be liable for
any incidental or consequential damages caused by the breach of any express or
implied warranty. Except to the extent prohibited by applicable law, any implied
warranty of merchantability or fitness for a particular purpose is limited in
duration for 1 year.
THIS PRODUCT CANNOT BE REPAIRED IF THE UNIT IS TAMPERED WITH IT
WILL INVALIDATE THE GUARANTEE. IF THE UNIT IS FAULTY PLEASE
RETURN IT TO YOUR ORIGINAL SUPPLIER WITH YOUR PROOF OF
PURCHASE.
Product Designed in California, USA,
Product Tested, QA/QC in California, USA,
Product Made in China
Copyright © 2019, FORENSICS LLC, all rights reserved.
FORENSICS, FORENSICS DETECTORS are registered trademarks of FORENSICS
LLC. All other trademarks, trade names, service marks and logos referenced
herein belong to their respective companies.

BASIC RESIDENTIAL COMBUSTION ANALYZER
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WEB: www.forensicsdetectors.com
Email: [e-mail]