VMA Replacement Wiring
Diagram
Consider the following information when replacing a
VMA1410, VMA1415, VMA1420, and the VMA1440
controller with a VMA18 controller.
The VMA142x controller has five binary outputs (BOs)
and internally supplies 24 VAC. The VMA18 controller
has three binary outputs (BOs) and supplies 24 VAC to
these BOs. The VMA18 controller has two configurable
outputs (COs) and these two COs require an external
low voltage power source. Refer to
Variable Air Volume
Modular Assembly (VMA) 1400 Series (LIT-635058)
for
the Input/Output (I/O) point differences between the
VMA1410 and VMA1420.
See
Figure 9
for wiring instructions.
12
VMA1826/1832 VAV Controller Installation Instructions
