Installing Remote Indoor Temperature/Humidity Sensor(S) - Bard MEGA-TEC W090A Service Instructions Manual

Installing Remote Indoor Temperature/Humidity Sensor(s)

One remote indoor temperature/humidity sensor and 35' of 18 gauge 5-conductor shielded cable is included with the
controller. This sensor must be installed for proper operation. Mount the temperature/humidity sensor in a location
least likely to be affected by open doors, rack-mounted fans, radiant heat sources, etc. Locating the sensor between
both return grilles is often the best location, but every installation is unique. Location height should be approximately
60" above the floor. The sensor is best mounted on a 2" x 4" junction box
. Use shielded cable to connect to controller.
conduit
1. Connect wires from the 18 gauge shielded cable to terminals #12, #13, #18, #19 and #22.
Wire
TB# Sensor
Mark
18 B6 NTC OUT Indoor Remote Sensor (Zone 1)
19 GND NTC OUT Ground
12 B2 OUT H
13 GND M (GO)
22 +VDC + (G)
6 7 8 9 10 11 12 13 14 15
2. Connect the other end of the shielded cable to the sensor terminals.
Be sure wires are connected to proper terminals as shown in table
above.
Sensor jumpers need to be positioned for 0-1 V. With sensor oriented
as shown in image to right, move both jumpers to right position (DP1
and DP2 set to OFF). This applies to all indoor temperature/humidity
sensors connected to the LC controller. See illustration mounted
inside of sensor cover for further detail on jumper position.
Earlier versions of this sensor may be mounted in a different
orientation which would affect the positioning of the sensor jumpers.
See page 42 for additional information on sensor orientation.
Manual 2100-705B
Page 20 of 43
Remote Indoor Temperature/Humidity Sensor Installation
Remote Indoor Humidity Sensor: 0-1 VDC (Zone 1)
Ground
Power for B2
20 21 22 23 24 25
16 17 18 19
and it is recommended that the cable be in
FIGURE 16
Description
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
Jumper
DP1
DP2
46 47 48 49 50 51 52 53 54 55 56 57 5