HST HD105 User manual

HD105
Gas Detector
With Relay Output
User’s Guide Ver5.2
ATTENTION: Please take a few minutes to thoroughly read
this manual, which should be saved for future reference and
passed on to any subsequent owner.
IMPORTANT! READ ALL INSTRUCTIONS BEFORE
INSTALLATION AND KEEP THIS MANUAL NEAR THE
ALARM FOR FUTURE REFERENCE.
CONTENTS OF THIS MANUAL
1 – DESCRIPTION
2 – FEATURES
3 -- TECHNICAL SPECIFICATION
4 -- INSTALLATION INSTRUCTIONS
5 -- OPERATION AND TESTING
6 -- GAS SAFETY GUIDE
7 -- HOME SAFETY GUIDE
8 -- SERVICE AND WARRANTY
1. DESCRIPTION
The gas alarm is designed for single station use. Small and
compact, the design and color makes it ideal for use in the
home, small commercial properties, and recreational vehicles.
It is intended to detect leakage of natural gas (methane
gas), town gas, and bottled gas (propane gas). The unit
is designed for DC wire-in applications. The gas alarm
can be mounted high (for methane gas) or low (for
propane (LPG) gas). It is equipped with a sturdy metal
mounting bracket for quick, easy, and secure
installation.
2. FEATURES
Detect all sorts of combustible gases, natural gas
(methane), bottled gas (propane), LPG (Liquefied
petroleum Gas), LNG (Liquefied natural gas), coal
gas, including town gas.
Easy to install, mounting bracket included.
Loud 75dB alarm and LED warning light.
High quality durable sensor.
Self diagnostic function by MCU intelligent
software.
Excellent reliability & High stability.
Ideal for all kitchens.
3. TECHNICAL SPECIFICATIONS
Unit Dimensions: 103mm (D) x 55 mm (H)
Color: Ceiling White
Weight: 155g
Operating Temperature: -10°C to +50°C
Ambient Humidity: ≤95% RH
Alarm Horn: 75dB at 3m (10 feet)
Operating Voltage: DC9-28V
Power Consumption: <2W (Standby), <5W (Alarm)
Value of Detection Threshold (Lower Explosive Limit):
Natural Gas: 5000ppm (10% LEL)
Method of Alarm: Flashing Red LED with 75dB alarm
Warm Up Time: approximately 120 seconds
Alarm Output: Relay Output (Normal Open 2A@DC24V)
4. INSTALLATION INSTRUCTIONS
The Gas Alarm is intended to detect leakage of natural
gas, town gas and bottled gas. It is intended for
installation in the home, small commercial properties,
and recreational vehicles.
Installation shall only be undertaken by technicians
holding a certificate issued by an authorized
distributor.
For detecting natural gas (lighter than air), the
alarm should be installed within 30 centimeters
below the ceiling and the maximum distance away
from the furnace or gas appliances is 8 meters.
For detecting LPG (heavier than air), the alarm
should be installed within 30 centimeters above the
floor and the maximum distance away from the
furnace or gas appliances is 4 meters.
The alarm should not be located close to any
obstacles preventing natural air circulation. It
should also not be located in a draft or close to a
cooker (cooking smells and other fumes can have a
bad influence on gas detection).
The detector can be connected with Security alarm
panel as Figure1. Relay output signal can be
changed from Normal Close(NC) to Normal
Open(NO) by Jump JP1 on the PCB board.
The detector can be connected with conventional
alarm panel as Figure 2 or Figure3.
For your convenience,
write down the following information.
If you call Us for Service, these are the first questions you
will be asked.
Gas Alarm Model Number (located on back of alarm):
Gas Alarm Assembly Number (Located on back of alarm):
Date of Purchase:
Where Purchased:
©

FIGURE1 Terminal Wiring with Security Alarm Panel
FIGURE2 Terminal Wiring with Fire Alarm Panel ( 3 Wires)
FIGURE3 Terminal Wiring with Fire Alarm Panel ( 4 Wires)
5. OPERATION AND TESTING
Check and test the gas alarm after installation. It should be
tested weekly and check after re-occupation following a
holiday.
Power on: After turn on the power, the LED is on, and then
the unit would take 120 seconds to warm up. In the warm
up time, the Yellow LED would flashes until end of the
warm up period.
Check that LED indication LED is on to ensure the power
supply is turn on.
Check that the LED flashes every 5 seconds to ensure the
unit is in operating mode.
Test: In the normal status, Press and hold the test button
and the unit should sound and the all LED light.
Silence: In the alarm status, press Test button, the unit
enter the silence status, the sound silenced and the red
LED flashes quickly, about 4 minutes late, the unit exit the
silence status.
Reset: In the alarm status, press the Test button down and
hold above 5 seconds, the unit would restore to normal
status.
Alarm:While detecting the gas leaking, the Red Alarm LED
would turn on and the buzzer sound, and relay contacts
would be activated and output signals.
6. GAS SAFETY GUIDE
If you hear the gas alarm sound or suspect that
there is a gas leakage. You should open all
windows and doors to allow the gas to disperse.
FIGURE 4
FIGURE 5
Don’t switch on lighting, press door bell, exhausting
fan or any kind of electrical appliance to avoid
explosion.
FIGURE 6
FIGURE 7
Check all the gas appliances. Extinguish any naked
flames and turn off the gas control off the gas
supply.
Call the Fire department immediately outside your
home or premises/ apartment.
7. HOME SAFETY GUIDE
If you are on holiday, turn off appliances switches &
the gas control valve.
Do not place the bed near gas pipes or gas meter.
Do not change the location of gas pipes by yourself.
In order to ensure your home safety, please employ
registered installers for regular safety inspection of all
gas installation & appliances.
Attention:
Keep these things, such as paints, chemicals, alcohol
away to make a false alarm.
8. Service and Warranty.
Install and adjust according to this guide book.
Check the detector once a week; please keep
contact with the service provider immediately if you
get some problems.
Do not tear down or sling the detector randomly.
Do not use chemicals to clean the detector directly,
or wash with water.
The detector is designed with automatic detection, if
the gas sensor or unit in error, do not disassemble
the unit yourself, but get advice from professional
company or service provider.
The manufacturer guarantees to take the
responsibility for free repair and exchange for one
year from the date of purchase if there is quality
problem, and only charge for capital cost beyond
one year.
EOL Resistor(6.8K)
ZONE+
DC24V-(0V)
Conventional Fire
Alarm Control Panel
ZONE-
Resistor
(470 ohm/1w)
Resistor
(470 ohm/1w)
Security Alarm Panel
DC12V+
DC12V-
DC Power Supply
is Unpoarized wire
Alarm Signal
Relay Output -COM Relay Output -NC/NO
Alarm Signal
Relay Output -COM Relay Output -NC/NO
EOL Resistor(6.8K)
DC24V+
DC24V-
Conventional Fire
Alarm Control Panel
ZONE+
Resistor
(470 ohm/1w)
ZONE-