17614_ins_wireless_900_rcvr
Installation and Operating Instructions
Wireless 900 MHz Receiver
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com
Specifications subject to change without notice.
rev. 04/21/15
1 of 5
Overview and Identification
The BAPI 900 MHz unit receives a
repeated
or
re-transmitted
RF signal from one
or more wireless temperature or humidity transmitters. The signal from the transmitter
(418 MHz) is received by a
BAPI Repeater
and then re-transmitted at 900 MHz up to
1,000 feet to the 900 MHz Receiver.
The receiver then outputs the values to any Analog Output Module through an RS485
four-wire bus. The Analog Output Modules convert the signal to an analog voltage,
current or resistance for the controller. The receiver can accommodate up to 127
different Analog Output Modules. It is surface, snaptrack or DIN rail mountable with a
79” extendable antenna for optimum recep-
tion.
Note:
The 900 MHz Receiver will only
receive a signal from a Repeater. It will not
receive the signal from the transmitters,
which transmit at 418 MHz.
Customer Provided Tools and Materials
#2 Philips Screwdriver, Drill, Wire
Analog Output Module Training
The installation process requires that each transmitter is trained to
its associated output module or modules so that they receive com-
munications from the correct transmitter. Pushing buttons in a de-
fined sequence on the transmitter and output module will bind the
two units together. The training process is easiest on a test bench
so that the transmitter and receiver/output modules are within
arm’s reach of each other. Training can be done in the field but will
require two people and a set of walkie talkies or cell phones. Be
sure to place a unique identification mark on the transmitter and
associated output module or modules after they have been trained
so that they can be matched together at the job site.
If more than one variable is transmitted by the room transmitter
(temperature, humidity and setpoint for instance), each variable
requires a separate output module. Perform the training sequence
for each output module. Any transmitted variable can be trained to
more than one output module.
TEMPERATURE OR HUMIDITY VARIABLE TRAINING
1. To train an output module to a Temperature or Humidity
variable, select the Resistance, Voltage or Current Output Module calibrated to the
temperature or humidity range you need and connect it to the wireless receiver. Note:
Multiple output modules can be trained to the same transmitter variable if desired.
2. Apply power to the receiver which will supply power to the connected output modules.
The power LED on the receiver will light and remain lit.
(Current Output Modules
must have loop power supplied to the module itself before they can be trained.)
3. Remove the cover of the room transmitter and remove the battery tabs or install the
batteries, observing polarity as shown in Fig 2. The small LED at the bottom right of
the circuit board, next to the setpoint, will flash approximately once every 20 seconds,
indicating a transmission. (The flash is very quick.)
Fig. 3:
Output Module
Service Button
Battery polarity
important or damage
to the unit may occur
Training
Button
Override
Button
Transmit
LED
Setpoint
Slider
Fig. 2:
Room Transmitter with
Optional Setpoint and
Override.
Continued on next page....
Fig. 1:
Two views of the 900
MHz Receiver.
