Figure 1.21 Wiring: Communication Wiring - Bard D36A2P/BLD.10304 Installation And Service Instructions Manual

5. Communication Wiring
Connect the communication wiring from the two wall-mount units to the controller in the manner shown in Figure
1.21. The communication wire should be 2-wire, 18 gauge shielded cable with drain. Any color can be used. Be
sure to match "+" and "-" symbols on controller terminal blocks to prewired unit control terminal block (see Figures
1.23 and 1.24 on pages 30 and 31). Attach communication wire filters as shown below in Figure 1.22. Use separate
conduits for communication and supply wiring.
D-Series
Wall-Mount Unit
Manual 2100-620A
Page 28 of 107
FIGURE 1.21
Communication Wiring
D-Series
Wall-Mount Unit
Bard-Link
TM
Controller