Horing LIH Industrial Co., LTD. NDKA1, NDKB1 User Manual

Carbon Monoxide

Detector

Model: NDKA1(Standalone) NDKB1(System)

Detector Base

Manual

1.Introduction

2.Source of CO

3.Symptoms of CO poisoning

CO enters the body through breathing. CO poisoning can be confused with
flu symptoms, food poisoning and other illnesses. Some symptoms include
shortness of breath, nausea, dizziness, light headedness or headaches.
High levels of CO can be fatal, causing death within minutes.

The concentration of CO, measured in parts per million (ppm) is a determining
factor in the symptoms for an average, healthy adult.

Source: NFPA's Fire Protection Handbook, 20th Edition.

Mounting detector in the house with heating installations, furnaces or
garages, such as living room, corridor, kitchen, boiler room, parking lot,
basement and so on.
Installed quantity should correspond to the room size to make sure the
best warning effect.

4.Recommended mounted location

1. Keep a distance of above 1.5m from any heating installations or avoid
mounting right above.

2. Avoid mounting in the house with full of dust, pollution, dirt, grease
and high humidity.

3. Avoid mounting around air vent, conditioner vent and the ceiling fan.

4. If there are any volatile chemicals in the mounting place, they should
be sealed well in case that volatile gas will bring about detector
malfunction.If the house is being refurbished and painted, please
dismantle the detector and store away. After all is done, please install
it back.

A. Hang on wall

Remove/Affix

(Screw to ceiling/wall)

Lock

(twist clockwise to lock)

Open

(twist counterclockwise to open)

Hang on wall

B. Screw

5.Not recommended mounted location

6.Mounting Detector

1.Home: The heating installation, such as hot-water heaters with gas and

gas stoves, is easy to combust incompletely and then produce CO.

3.Fire: Smolder is a kind of incomplete combustion. It often occurs before
& after the fire as a disaster and produce a large amount of CO.

The scooters/cars or general machine tools can
exhaust fumes with high concentration.

2.Parking lots & garage:

20cm

20cm

Model NDKB1NDKA1
Power Source 12~24V3V DC
Standby Current 800uA24uA
Alarm Current under 40mAunder 65mA
Alarm Sound 85dB/3M and above
Relay Output a set of contacts
Ambient Temperature -10~50℃
Dimensions 102mm(Dia.) × 45mm(H.)
Weight about 150g
Material fire-proof plastic

Carbon monoxide
concentration

The underlying symptom

50 ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

No adverse effects with 8 hours of exposure.

200

Mild headache after 2-3 hours of exposure.

400

Headache and nausea after 1-2 hours of exposure.

800

Headache, nausea, and dizziness after 45 minutes; collapse and unconsciousness
after 1 hour of exposure.

1,000

Loss of consciousness after 1 hour of exposure.

1,600

Headache, nausea, and dizziness after 20 minutes of exposure.

3,200

Headache, nausea, and dizziness after 5-10 minutes; collapse and unconsciousness
after 30 minutes of exposure.

6,400

Headache and dizziness after 1-2 minutes; unconsciousness and danger of death
after 10-15 minutes of exposure.

ppm12,800

Immediate physiological effects, unconsciousness and danger of death after 1-3
minutes of exposure.

There is a test button on the surface to test
if it is normal or not.
And it also can delete detection data.

7.Testing 9.Battery installation/Wiring Diagram

1.The product acts in accordance with CO concentration of EN
standard inspection procedure as follows:

There is no need to clean & maintain, please just keep the surface of
detectors clean. In normal times, you can press the test button to make
sure it is under normal condition.

1. Avoid using detergent or solvent to wipe. Please don’t use water or
detergent to wash, either.

2. Keep a certain distance from home appliances with electronic interference.

3. Prohibit from taking down the product to overhaul or make a change to it.

8.Operation

10.Maintenance

11.Warning

CO concentration

30 ppm

50 ppm

100 ppm

300 ppm

120 minutes

60 minutes

10 minutes

90 minutes

40 minutes

3 minutes

Won’t release alarm before the time Release alarm before the time

2. Power indicator: the LED flashes green once every 30 seconds after
normally supplying the power.

3. Warm-up time: about 1 minute.

4. Indicator mode:

5.

Reset: when the CO concentration is below 30ppm, detector will reset
automatically.

6.

Test button function:

A. Warm-up: flash for 1 second and then go off for 1 second.

A. General operation: Pressing it for alarm test, it will flash green and red
and yellow twice every second and 2 beep sounds.

B. Early warning operation: Pressing it can remove the early warning status.
But if it detects the CO concentration which meets the requirement
of early warning, it will still enter early warning status.

C. Alarm operation: Pressing it can remove the alarm status. But if it
detects the CO concentration which meets the requirement of alarm,
it will still enter the alarm status.

B. Standby: flash green once every 30 seconds.
C. Early warning: flash red once every 10 seconds and 1 beep sound.
D. Alarm: flash red 5 times every 5 seconds and 5 beep sounds.
E. Fault:

1. Low Power: flash yellow one times every 30 seconds and 1 beep
sounds.

2. Expected useful life expire (5 years): flash yellow two times every
30 seconds and 2 beep sounds.

3. Sensor malfunction: yellow light ON continuously and 2 beep sounds.

*Prior to determining the action will enter the early warning mode multiple judgments, confirmed
after entering the action mode.

20cm

TEST BUTTON

NDKA1(Standalone)-Battery installation

NDKB1(System)-Wiring Diagram

20cm

1O.NDKA1.M51 Ver.A0

Black line (POSITIVE)

Red line (NEGATIVE)