Auto-Zone Control Systems Auto-Zone Plus Systems Installation & Operation (Version 03A) - Manual (Page 57)

Auto-Zone Plus
Section 2
Design Guide 2-25
Auxiliary Relay Board for
Zone Controllers
General
An optional auxiliary relay board is available for the Zone Controllers. This board
provides additional outputs for the following applications:
• Parallel Fan
• Box Heat
• Auxiliary Heat (typically perimeter type)
• Series Fan
The board comes shipped with a modular cable which plugs directly into the Zone
Controller connector marked “Expansion.” After connecting the board, the system will need
to be powered OFF then ON for the system to recognize the presence of the relay board.
Figure 2-16:
Auxiliary Relay Board Layout
Warning: Relay contacts are rated for 24VAC pilot duty only! Do not apply
voltages higher than 24VAC.