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General| Category | Control Unit |
|---|---|
| Power | 24 VAC |
| Input Voltage | 24 VAC |
| Output Voltage | 24 VAC |
| Sensors | Outdoor Sensor |
| Operating Temperature | 32°F to 122°F (0°C to 50°C) |
Lists the key features and capabilities of the Snow Melting Control 654.
Discusses FCC compliance and potential interference issues with the control.
Lists required tools and materials for installation.
Guidelines for selecting an appropriate control installation site.
Details low-voltage wiring procedures and requirements.
Explains wiring connections for Snow/Ice sensors (090/094).
Explains wiring connections for Snow and Slab sensors.
Explains wiring for outdoor, supply, and boiler return sensors.
Wiring for modulating output signals and tN4 network communication.
Wiring diagrams for tN4 network wiring centers or zone managers.
Wiring diagram for the alert relay output.
Guidance on mounting the outdoor sensor for accurate readings.
Instructions for connecting wires to the outdoor sensor.
Guidance on mounting the universal sensor on pipes or wells.
Procedure to test sensor wiring resistance and continuity.
Procedure to test the control wiring connections.
Procedure to verify the control's power supply voltage.
Details the function of the control's physical switches.
Instructions for using Maximum Heat, Test, Purge, and Off overrides.
Details the control's screen layout, including display elements.
Explains the meaning of operation and status indicators on the display.
Explains common symbols used on the control display.
Guide to accessing and navigating the control's programming menus.
Managing access levels for settings and locking the control.
Displays the snow melt zone number on the tekmarNet® system.
Displays the current outdoor air temperature.
Displays calculated slab target and current slab temperature.
Displays status of Heat, System Pump, and Alert relays.
Displays PWM duty cycle rate and remaining melt time.
Sets desired surface temperatures for melt, idle, and storm modes.
Sets manual melt run time and additional melt time.
Configuration of time, date, and daylight saving settings.
Sets programmable schedule time periods for Events 1 through 4.
Configures temperature units and display backlight operation.
Enables and configures scene modes and the away touch key.
Records system running hours and heat relay cycles.
Records highest and lowest slab and outdoor temperatures.
Manages access levels and displays software version.
Option to load factory defaults and view error history.
Manually test relays and operate the system in various modes.
Adjust boiler firing rate and mixing valve position manually.
Configures operating modes and selects installed sensors.
Enables slab protection and the EconoMelt feature.
Configures boiler type and modulation parameters.
Configures modulation delay and motor speed for boilers.
Configures mixing signal type and actuating motor speed.
Sets the maximum operating temperature for mixing.
Configures network address and displays device count.
Selects snow zone and configures zone tracking options.
General description of snow melting systems and their benefits.
Critical aspect for minimizing snow melting costs using sensors.
Explains how the system heats the slab to melt snow or ice.
Procedure to activate the Away scene for energy savings.
Quickly disable the snow melting system using the Away key.
Defines schedule repetition (24hr/7day) and event setup.
Sets priority levels (None, Conditional, Full) for hydronic systems.
Sets priority levels (None, Conditional, Full) for electric systems.
Operation details for electric snow melting using PWM.
PWM operation for non-dedicated systems.
Operation details when using a dedicated boiler.
Control logic for single stage on/off boilers.
Control logic for single hot-water modulating boilers.
Other boiler control methods and configurations.
Control of mixing valve via analog signal.
Selection and settings for mixing injection pumps.
Periodically runs pumps to prevent seizure.
Post purge heat from boiler to zone after heating.
Lists and describes specific error messages from the system.
Summary of key settings available in the Set Temp menu.
Summary of key settings available in the System menu.
Summary of key settings available in the Boiler menu.
