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Covers general safety warnings for installation, operation, and potential hazards.
Overview of the manual's purpose and recommended pre-installation review.
Details the limited warranty, registration, and claim procedures.
Explains the structure and meaning of the boiler's model number.
Illustrates the largest and smallest boiler models with key visual features.
Provides detailed physical dimensions and connection sizes for all boiler models.
Lists components included in the boiler's installation kit.
Lists available optional accessory kits for boiler upgrades and features.
Instructions for assembling the automatic vent damper onto the boiler.
Guidance on selecting boiler location and required installation clearances.
Critical safety information regarding venting, combustion air, and flue gas hazards.
Requirements for adequate combustion air supply based on boiler size and location.
General guidelines for natural draft and power venting, including code compliance.
Specific requirements for venting into masonry or Type C chimneys.
Clearance requirements for vent pipe terminations based on US and Canadian codes.
Guidelines for installing the manufacturer's suggested power venter.
Steps for safely removing a boiler from a common venting system.
Requirements for gas supply pressure, piping, and safety devices.
Information on converting the boiler for LP gas operation.
Special safety considerations and code references for LP gas installations.
Guidance on selecting appropriate pumps based on flow rate and headloss requirements.
Requirements for boiler water piping, pressure, and safety relief valve discharge.
Explanation of the Low Loss Header's function and benefits for water flow.
Considerations for installing the boiler with refrigeration systems.
Electrical safety precautions, grounding, and wiring best practices.
Details on connecting the 120V main power supply to the boiler.
Information on installing and using the optional outdoor sensor.
Overview of terminal blocks (TB1, TB2, TB3) for external connections.
Wiring examples for power vent kits and combustion air systems.
Detailed schematic illustrating all electrical connections and components.
Diagram showing the control logic and sequence of operations.
Introduction to the digital control interface and its display indicators.
Details on setting economy, limits, LEDs, and ignition status.
Information on the boiler's out-of-the-box settings for basic operation.
Overview of advanced settings for performance tuning.
Steps for wiring and setting up outdoor reset and warm weather shutdown.
Adjusting temperature units, cut-offs, differentials, and default settings.
How to use the test/settings button to view and test functions.
Location and function of the temperature and pressure gauge.
Critical steps for filling the system and removing all air.
Step-by-step process for starting the boiler and observing system operation.
Guidance on adjusting and verifying the pilot flame for proper operation.
Summary of operating and safety instructions found on the boiler's decal.
Procedure for safely shutting down the boiler and draining for freeze protection.
Instructions for removing covers and panels to access internal components.
Routine maintenance tasks, safety checks, and cleaning procedures.
Description of boiler operation indicators and call for heat signals.
Steps for diagnosing electrical issues by checking voltages and wiring.
Table listing common symptoms, their causes, and recommended remedies.
Flowchart for troubleshooting burner-off conditions based on control LED status.
Flowchart for troubleshooting burner-on conditions based on control LED status.
Diagrams illustrating the location and identification of boiler components.
Comprehensive list of replacement parts with part numbers for each boiler size.
List of available optional accessory kits and their corresponding part numbers.
Definitions of technical terms and components used in the manual.
General| Model | MINI-THERM JX Series |
|---|---|
| Category | Boiler |
| Brand | Laars |
| Fuel Type | Natural Gas or Propane |
| Heat Exchanger Material | Stainless Steel |
| Ignition Type | Direct Spark Ignition |
| Thermal Efficiency | Up to 95% |
| Series | JX |
| Efficiency | Up to 95% |
| Vent Type | Direct Vent |
| Water Content | Varies by model, refer to specific model data sheet |
| Weight | Varies by model, refer to specific model data sheet |
| Dimensions (H x W x D) | Varies by model, refer to specific model data sheet |
