Input/Output Box Terminal Assignments - Watts AERCO EXT Installation, Operation & Maintenance Manual

Modulex EXT Commercial Series
CHAPTER 4: Installation Instructions

4.29 Input/Output Box Terminal Assignments

Heating system components such as pump, outside air sensor and flow switch must be
connected to the Input/Output box. Alarm contact, analog control input (0--10V) and Modbus
communication are also connected to the Input/Output box. See figure 4-21a for terminal block
assignments.
Figure 4-21a: E8 Controller Terminal Assignments
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