Drexma UDG/ADG Programmable Thermostat Quick Start Guide
This guide provides essential information for the installation and basic operation of the Drexma UDG/ADG programmable thermostat.
Product Overview
The Drexma UDG/ADG is a programmable thermostat designed for regulating electric underfloor heating systems. It features a clear display showing the current room temperature, set temperature, and time. The thermostat is a Class II device with reinforced insulation.
Key Features and Components
- Home Screen Display: Shows current temperature, set temperature, time, and operational status.
- GFCI/EGFPD Test Button (1): Used for monthly testing of the Ground Fault Circuit Interrupter / Equipment Ground Fault Protection Device.
- Application (2): Indicates the current mode or function.
- Current Temperature (3): Displays the ambient room temperature.
- Heating Indicator (4): Illuminates when the heating system is active.
- Target Temperature (5): The desired temperature setpoint.
- 4-Event Program (6): Allows scheduling of temperature changes throughout the day.
- Day and Time Display (7): Shows the current day and time.
- Access Main Menu (8): Button to navigate to the main menu.
- On/Off/GFCI/EGFPD Reset Button (9): Used to turn the system on/off and reset the GFCI/EGFPD.
Technical Data
Supply Range: 120/240 Vac 50/60 Hz
Load: Max. 15 A (resistive load)
Max. power: 1800 W at 120 Vac, 3120 W at 208 Vac, 3600 W at 240 Vac
Temperature range: +5 to +40°C / +41 to +104°F
Ambient temp. range: 0 to +25°C / +32 to +77°F
Control Type: Electronic room thermostat
Mounting: Independently mounted, for flush mounting
Terminals: Suitable for field wiring cables of 12 to 22 AWG.
Installation Instructions
- Sensor Placement: The floor sensor is recommended to be placed in a non-conductive installation pipe embedded in the floor, sealed at the end, and positioned as high as possible in the concrete layer. Center the sensor between heating cables.
- Power Supply: Ensure the power supply voltage matches the heating cable's voltage rating. Turn off power at the breaker panel before installation.
- Wiring: Connect power supply wires to the 'Line' terminals and heating cable wiring to the 'Load' terminals on the power base. The floor sensor cable should be routed separately from power wires and the heating cable's cold lead. Ensure insulation is not damaged.
- Mounting the Power Base: Secure the power base to the wall within the electrical box.
- Sensor Connections: Connect the floor sensor to terminals C and D (no polarity). Connect the power module to terminals A and B (refer to power module instructions).
- Final Assembly: Remount the faceplate and tighten the bottom screw.
- Testing: Perform the GFCI/EGFPD test.
Important Warnings
- To avoid electric shock, always disconnect the heating system power supply at the main panel before installation and maintenance.
- Keep thermostat air vents clean and unobstructed.
- Installation must comply with national and/or local electrical codes and be performed by qualified personnel.
- If a power module with EGFPD is installed where a GFCI is required, a separate GFCI must also be installed.
Support and Further Information
For support, contact your installer or retailer.
Scan the QR-code for the full user manual: http://www.ojelectronics.com/UDG
Certifications
The product is UL Listed for the US and Canada, complying with standards such as UL 60730-1, UL 60730-2-9, CSA E60730-1, CSA E60730-2-9, UL 943, and CSA C22.2 No. 144.1.
