User's Manual

K9947V3 5/08 Rev. A
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 Honeywell’s ADEMCO
alarm systems that support 5800 series devices. The 5821
can be configured to operate as a stand-alone temperature
sensor and/or as either a Remote Temperature Sensor or
Flood Detector. The 5821 in combination with the
ADEMCO T280R temperature probe is ideal for monitoring
refrigerators and freezers in restaurants, kitchens and
warehouses where food storage is a concern. The 5821 in
combination with the ADEMCO 470PB probe can be used to
sense floods in basements and other areas where there is a
possibility of flooding. The 5821 will send an alarm, via its
RF transmitter, to the control when the preset temperature
limit is exceeded or when a flood is detected. Temperature
monitoring and flood detection is dependent on the
operating mode selected. Refer to Table 1 for applicable
operating modes.
Room temperature is monitored at the device using the
5821’s internal sensor. Refrigerator or Freezer temperature
is monitored remotely using the ADEMCO T280R
temperature probe. Flood detection is monitored remotely
using the ADEMCO 470PB probe with the supplied resistor.
A separate 5821 is required for each external probe being
used.
In refrigerator or freezer applications, when the
temperature increases past the high threshold limit and a
delay of greater than 30 minutes passes, an alarm is
triggered. This preset delay offers greater reliability
against false alarms, especially due to open refrigerator or
freezer doors.
A 3-volt lithium battery powers the 5821. If the 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:
Duracell DL 123A or Panasonic CR123A.
• Observe polarity.
• When replacing the battery, wait at least 30 seconds
after removing the old battery, before installing the new
one.
Install or replace the battery as follows:
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 Figure 1 for location), and slightly
twisting the blade until the cover disengages.
2. Install a 3-volt lithium battery as shown in Figure 1.
TAMPER SUPERVISION
The 5821 tamper supervision feature (Loop 4) causes a
trouble signal to be sent to the control if the unit’s cover is
removed from the base or if an external probe is used and
the wire is cut (open) or the probe is shorted. The tamper
switch is also used to program the unit’s serial number and
loop assignments to the control panel.
SETTING THE OPERATING MODE
Table 1 provides a list of the various operating modes of the
5821 with the respective Loop and DIP Switch settings for
each. Note that Cold Temp Sensing can be used in
combination with any of the other operating modes. To use
the transmitter to monitor two different conditions, you
must program each loop used on the 5821 as its own zone,
and you must set the DIP Switches as shown for the
combination functions in Table 1.
PROGRAMMING THE UNIT
Once you have selected an operating mode and have set the
DIP Switches accordingly, you must enroll the transmitter
in the control panel. When programming the transmitter in
the control panel, note that you must program a separate
zone for each loop you are using on the transmitter. To
program:
1. Enter the control’s Zone Programming mode.
2. Enter the zone number to be programmed.
3. Enter the applicable zone type when prompted (zone
types such as 24-Hr. Aux, Waterflow, etc. should be
used) depending on the function of the zone and the
control panel being used (see the control panel’s
instructions for available zone types and definitions).
4. When prompted, enter Input Type 03 (3 on some
controls) – Supervised RF Transmitter.
5. When prompted for the serial number, transmit from
the detector by pressing the tamper switch.
6. When the serial number is displayed, transmit from the
detector again by pressing the tamper switch.
The current loop number (4) will begin to flash.
7. Manually change the loop number to the desired loop
number for the zone (according to the application—see
Table 1).
8. When programming for this zone is complete, program
other zones for the transmitter as necessary (each loop
requires its own zone.
9. Exit Programming mode when programming is
complete, and test the detector. Refer to the Testing
section.
FCC / IC STATEMENT IS ON PAGE 4
(OR USE BOOK MARK )