Honeywell International Inc. 8DL5821 Manuale Utente
K9947 7/04 Rev. A
ALPHA
ADEMCO 5821
Temperature Sensor &
Flood Detector
INSTALLATION AND SETUP GUIDE
GENERAL INFORMATION
The ADEMCO 5821 Temperature Sensor & Flood Detector
is a wireless transmitter used with ADEMCO alarms
systems that support 5800 series devices. The 5821 can be
configured to operate as either a Temperature Sensor or
Flood Detector. The 5821 in combination with the
ADEMCO T280R is ideal for monitoring refrigerators and
freezers in restaurants, kitchens and warehouses where
food storage is a concern. The 5821 will send an alarm to
the control when the set temperature limit is exceeded or
when a flood is detected protecting equipment, property,
and perishable items via it’s rf transmitter.
is a wireless transmitter used with ADEMCO alarms
systems that support 5800 series devices. The 5821 can be
configured to operate as either a Temperature Sensor or
Flood Detector. The 5821 in combination with the
ADEMCO T280R is ideal for monitoring refrigerators and
freezers in restaurants, kitchens and warehouses where
food storage is a concern. The 5821 will send an alarm to
the control when the set temperature limit is exceeded or
when a flood is detected protecting equipment, property,
and perishable items via it’s rf transmitter.
Temperature Sensing is measured by an internal sensor, or
externally using ADEMCO T280R probe, or both. Flood
detection is accomplished using external probe ADEMCO
470PB with the supplied resistor.
externally using ADEMCO T280R probe, or both. Flood
detection is accomplished using external probe ADEMCO
470PB with the supplied resistor.
When the temperature either increases past the high
threshold limit and delay (30 minute delay) or below the low
temperature threshold limit and delay (30 minutes) an
alarm is triggered. This preset delay offers greater
reliability against false alarms due to normal usage of
refrigeration equipment.
threshold limit and delay (30 minute delay) or below the low
temperature threshold limit and delay (30 minutes) an
alarm is triggered. This preset delay offers greater
reliability against false alarms due to normal usage of
refrigeration equipment.
MODES OF OPERATION
The refrigeration mode of the device can be used to monitor
refrigerator or freezer equipment that keep perishables
below a set temperature point. The warm temperature mode
of the device is used to warn of a high temperature
condition, protecting temperature sensitive equipment and
operations. When the temperature rises to the set point
temperature, an alarm is sent.
refrigerator or freezer equipment that keep perishables
below a set temperature point. The warm temperature mode
of the device is used to warn of a high temperature
condition, protecting temperature sensitive equipment and
operations. When the temperature rises to the set point
temperature, an alarm is sent.
Setting the temperature for Alarm.
When the set temperature limit is exceeded, the appropriate
predefined time-delay begins. At the end of the delay, the
alarm is sent.
predefined time-delay begins. At the end of the delay, the
alarm is sent.
The 5821 can be used to operate in several modes as follows:
• Report room air temperature has fallen below 45°F.
• Report room air temperature has exceeded either 75°F
• Report room air temperature has fallen below 45°F.
• Report room air temperature has exceeded either 75°F
or 95
°F as selected via the positioning of Dip Switch 1
and 2.
• Monitor and report temperatures above 10°F or 42°F
using ADEMCO External Sensor Probe T280R as
selected via the positioning of DIP Switch 1 and 2.
selected via the positioning of DIP Switch 1 and 2.
• Monitor and report the presence of water using
ADEMCO External Probe 470PB with supplied resistor
as selected via the position of DIP Switch 2.
as selected via the position of DIP Switch 2.
The 5821 also feature a tamper switch, which causes a
trouble signal to be sent to the control if the unit’s cover is
removed from the base.
trouble signal to be sent to the control if the unit’s cover is
removed from the base.
The Tamper switch is also used when programming the
unit’s serial number at the control.
unit’s serial number at the control.
The 5821 is powered by a 3-volt lithium battery. If the
battery voltage gets too low, the 5821 sends a low battery
signal to the control panel.
battery voltage gets too low, the 5821 sends a low battery
signal to the control panel.
Installing/Replacing the Battery
Important Notes:
• Use 3-volt lithium battery:
• Use 3-volt lithium battery:
Duracell DL 123A or
Panasonic/Sanyo/Varta CR123A.
Panasonic/Sanyo/Varta CR123A.
• Observe polarity.
• When replacing the battery, wait at least 30 seconds
• When replacing the battery, wait at least 30 seconds
after removing the old battery, before installing the new
one.
one.
1. Remove the transmitter's top cover by inserting the flat
blade of a small screwdriver into the pry-off slot at one
end of the unit (see Fig. 1 for location), and slightly
twisting the blade until the cover disengages.
end of the unit (see Fig. 1 for location), and slightly
twisting the blade until the cover disengages.
2. Install a 3-volt lithium battery as shown in Figure 1.
Operating
Mode
Cold Temp
Mode
<45
°F
Warm Temp
Mode
>75
°F
Hot
Temp Mode
>95
°F
Refrig
Mode
>42
°F
Freezer
Mode >10
°F
Flood
Mode
Mode
TAMPER
Mode
Loop Number
Loop 1
Loop 2
Loop 2
Loop 2
Loop 2
Loop 3
Loop 4
Sensor Device
Internal
Sensor
Internal
Sensor
Internal
Sensor
External
Probe
T280R
External
Probe
T280R
External
Probe 470PB
with resistor
PC Board
Mounted
Tamper
Switch
S1
X OFF
OFF ON OFF X
X
Dip
Switch
Setting
S2 X
OFF
ON
ON
On
ON
X
X = Switch position does not matter