Auto-Zone Control Systems Auto-Zone Basic Systems Installation & Operation (Version 02C) - Manual (Page 58)

Section 2 Auto-Zone Basic
2-28 Installation and Wiring
Auxiliary Relay Board for
Zone Controllers
An optional auxiliary relay board is available for the Zone Controllers. This board pro-
vides 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 Control-
ler connector marked “Expansion.” After connecting the board, the system will need to be
powered OFF and then ON for the system to recognize the presence of the relay board.
Figure 2-21: Auxiliary Relay Board Layout
Warning:
Relay contacts are rated for 24VAC pilot duty only! Do not apply
voltages higher than 24VAC.