Model No. DFC
DIGITAL ENHANCED GAS FIRED MODULATING CONTROL
This manual covers the following product(s):
DFC |
Direct Fired Control |
Table of Contents |
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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 |
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Ph. (877) 351-4702 |
www.RTC-Solutions.com |
4380 Oakes Road, Suite 804 |
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Fax (919) 845-8102 |
Email: info@RTC-Solutions.com |
Davie, FL 33314 |
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Overview
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 nonvolatile memory, and are retained even during a power outage. Also, the DFC is powered by 24V AC.
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Figure 1: DFC Schematic Layout |
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Normal Operation |
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The DFC will always display the current discharge air temperature. Press the UP or DN |
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key to change the discharge setpoint temperature. Once the key is pressed, the LED will |
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display the text for the current setpoint temperature. Use the UP or DN key in order to set |
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a new discharge temperature. Then press the ENT key to save the changes made. If a key is |
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not pressed for 10 seconds, the DFC will exit without saving. When adjusting the setpoint |
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range, the setpoint cannot surpass the set Low and High values. For instance, if Low |
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(“SPLo”) is set to 80°F and High (“SPhi”) is set to 150°F, the setpoint is adjustable between |
Figure 2: DFC Keys |
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80°F to 150°F. |
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DOC# T0008 2.2.2015 DFC O&M |
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Ph. (877) 351-4702 |
www.RTC-Solutions.com |
4380 Oakes Road, Suite 804 |
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Fax (919) 845-8102 |
Email: info@RTC-Solutions.com |
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Davie, FL 33314 |
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