Controls; General; Control Boards; Carrier Appcontroller - Carrier 09FC020 Installation, Start-Up And Maintenance Instructions

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NOTES:

1. Place baffle on end opposite the control box.

2. Material: 18 ga. Corrosion Resistant Sheet Metal.

3. Dimensions are in mm [inches].

CONTROLS

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.

Two control boards are used in this unit, the Carrier AppController

and the Equipment Touch™ display.

Fig. 31 — Field-Fabricated and Field-Installed Wind Baffle

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.

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