Rtc DFC User Manual

Ph. [phone]

www.RTC-Solutions.com

4380 Oakes Road, Suite 804

Fax [phone]

Email: [e-mail]

Davie, FL 33314

Model No. DFC

DFC

Direct Fired Control

DIGITAL ENHANCED GAS FIRED MODULATING CONTROL

This manual covers the following product(s):

Table of Contents

Overview ............................................................................................................................................................................ 2

Normal Operation ................................................................................................................................................................ 2

Programming ...................................................................................................................................................................... 3

Features ............................................................................................................................................................................. 3

Valve Connections ............................................................................................................................................................... 4

Menu Map ........................................................................................................................................................................... 5

Installation ......................................................................................................................................................................... 6

Specifications ...................................................................................................................................................................... 6

DOC# T0008 2.2.2015 DFC O&M 1

Ph. [phone]

www.RTC-Solutions.com

4380 Oakes Road, Suite 804

Fax [phone]

Email: [e-mail]

Davie, FL 33314

Overview

ENT

DN

UP

DN

UP

Figure 2: DFC Keys

Figure 1: DFC Schematic Layout

The Direct Fired Control (DFC) is a digital gas fired heating control. The control has a simple five button interface with a

four digit LED display. All programmable parameters can be accessed through the user menu with the five button

interface. The DFC’s setpoint temperature sensing operation ranges from 40°F (4°C) to 250°F (121°C). There is a

temperature sensor input that connects to provide a discharge temperature. The setpoint may be adjusted by the controls

internal menu settings or by an external remote, such as the DFTD and RDU. There is a combination of two modulating

outputs that will power either a 0-24V DC solenoid or a 0-10V DC actuated valve. User parameters are stored in non-

volatile memory, and are retained even during a power outage. Also, the DFC is powered by 24V AC.

Normal Operation

The DFC will always display the current discharge air temperature. Press the or

key to change the discharge setpoint temperature. Once the key is pressed, the LED will

display the text for the current setpoint temperature. Use the or key in order to set

a new discharge temperature. Then press the key to save the changes made. If a key is

not pressed for 10 seconds, the DFC will exit without saving. When adjusting the setpoint

range, the setpoint cannot surpass the set Low and High values. For instance, if Low

(“SPLo”) is set to 80°F and High (“SPhi”) is set to 150°F, the setpoint is adjustable between

80°F to 150°F.

DOC# T0008 2.2.2015 DFC O&M 2