Carrier 09FC020, Installation, Start-Up And Maintenance Instructions

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Fig. 31 — Field-Fabricated and Field-Installed Wind Baffle
CONTROLS
General
The 09FC utilizes the Carrier AppController electronic control
system that controls and monitors all operations of the unit. The
control system is composed of several components as listed in fol -
lowing sections. Wiring Diagrams and Component Arrangement
Diagrams are shown in Appendix A.
Control Boards
Two control boards are used in this unit, the Carrier AppController
and the Equipment Touch™ display.
Carrier AppController
The Carrier AppController is the heart of the control system. It
contains the operating software and controls the operation of the
machine. The Carrier AppController software continuously evalu -
ates information received from its inputs and controls outputs ac -
cordingly. The Carrier AppController receives inputs from the En -
tering Water, Leaving Water and Outdoor Air temperature Therm -
sitors as well as a 24Vac signal to enable the unit. Based on the
inputs, it controls the 3-Way Bypass Valve, an Alarm relay and
controls the VFD Fan Speed with a 0-10 vdc signal.
pc
NOTES:
1. Place baffle on end opposite the control box.
2. Material: 18 ga. Corrosion Resistant Sheet Metal.
3. Dimensions are in mm [inches].