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General| Brand | Thermal Solutions |
|---|---|
| Model | APEX APX425C |
| Category | Boiler |
| Language | English |
Lists available boiler models and provides a general overview of the product.
Explains the meaning of DANGER, CAUTION, WARNING, and NOTICE symbols used in the manual.
Details specific installation rules for horizontally vented gas equipment in Massachusetts.
Provides detailed specifications, ratings, and dimensional data for different boiler models.
Lists contaminants that can cause corrosion and damage to the boiler's combustion system.
Specifies minimum clearances required between vent pipes and combustible materials.
Details how to stack boilers and provides clearance information for installation.
Provides compatibility information for stacking different Apex boiler models.
Outlines general rules and considerations for installing vent and combustion air systems.
Describes the available types of vent and combustion air systems for the boiler.
Specifies maximum allowable lengths for vent and combustion air piping.
Lists various vent and combustion air intake system options available for the boiler.
Provides data on pipe sizes, equivalent lengths, and maximum run lengths for venting.
Details equivalent lengths for various vent and combustion air system components.
Details installation procedures and component requirements for CPVC/PVC venting systems.
Lists the CPVC/PVC vent and air intake components included with the boiler.
Outlines installation procedures and component requirements for polypropylene venting systems.
Lists components required for polypropylene venting systems.
Provides installation procedures and component information for stainless steel venting systems.
Lists Thermal Solutions components for 4-inch stainless steel venting systems.
Details M&G DuraVent FasNSeal components for single wall stainless steel venting.
Lists Z-Flex Z-Vent components for single wall stainless steel venting systems.
Specifies requirements for boiler room ventilation and outdoor air openings.
Provides guidance on correcting issues in common venting systems to meet code requirements.
Covers venting considerations for installing multiple boilers together.
Details the function and installation of the condensate trap and drain line system.
Provides notes on the chemical properties of condensate and disposal requirements.
Lists the maximum condensate flow rates for each boiler model.
Explains the installation of an optional condensate neutralizer kit and its maintenance.
Guides the installation of the boiler's supplied piping and trim components.
Outlines the requirements for the boiler's closed-loop pressurized hydronic piping system.
Provides data on required boiler flow rates and recommendations for circulator selection.
Recommends Taco circulators for near boiler piping configurations.
Recommends Grundfos circulators for near boiler piping configurations.
Details standard requirements for installing safety relief valves and other piping components.
Explains the installation requirements for the safety relief valve.
Lists and explains the function of required and recommended components like flow switches and circulators.
Details the installation requirement for the boiler drain valve.
Provides equivalent length values for typical piping fittings and valves used in system design.
Illustrates the recommended near-boiler piping configuration for heating-only applications.
Shows the recommended piping for systems combining heating and indirect water heating.
Provides guidelines for piping in systems with high dissolved oxygen or chillers.
Details how to size water manifolds for multiple boiler installations.
Illustrates methods to isolate the boiler from oxygenated water using heat exchangers.
Shows a diagram for multiple boiler water piping configurations.
Continues the diagram for multiple boiler water piping configurations.
Covers factors for designing and sizing the gas piping system for adequate supply.
Provides maximum capacity data for natural gas piping based on size and length.
Offers capacity data for LP gas piping and equivalent lengths for fittings.
Details how to connect the boiler's gas valve to the gas supply system.
Illustrates a recommended gas piping configuration for boiler installation.
Specifies the minimum and maximum inlet gas pressure ratings for the boilers.
Covers pressure testing procedures and the location of gas pressure taps and switches.
Details operation and settings for low and high gas pressure switches on specific APX models.
Provides guidance on gas piping for systems with multiple boilers.
Outlines general guidelines for electrical grounding and overcurrent protection.
Explains the need for a separate circuit and the installation of a service switch.
Details power consumption and current draw for different boiler models.
Directs users to wiring diagrams for connecting the boiler's electrical components.
Shows the location of Printed Circuit Boards (PCBs) and the 120 VAC field wiring connections.
Covers low voltage connections and the wiring procedure for the flow switch.
Presents a ladder diagram illustrating the boiler's electrical wiring schematic.
Provides a detailed diagram of all electrical wiring connections for the boiler.
Illustrates modified wiring for DHW priority with central heating and indirect water heaters.
Shows modified wiring for DHW priority with central heating zone valves and indirect water heaters.
Depicts wiring for multiple boilers using an internal control sequencer.
Illustrates wiring for multi-boiler systems controlled by a Tekmar 265 unit.
Shows wiring for multi-boiler systems controlled by a Tekmar 264 unit.
Discusses wiring considerations for multiple boilers and external control systems.
Outlines essential checks and preparations before initiating boiler startup.
Details procedures for cleaning and treating the heating system water.
Covers procedures for confirming water/gas tightness and vent system integrity.
Addresses conversion to LP gas and setup procedures for high-altitude installations.
Provides step-by-step instructions for starting the boiler for the first time.
Illustrates the basic operating steps for starting the boiler.
Details procedures for initial gas train purging and inspecting the burner flame.
Covers checking gas inlet pressure and performing combustion analysis.
Provides typical combustion readings for natural gas and LP fuels at sea level.
Shows visual guides for burner flame appearance and gas valve details.
Explains how to test the safety limit controls for proper function.
Covers checking thermostat operation and adjusting supply water temperatures.
Details the procedure for converting the boiler from natural gas to LP gas.
Lists approximate throttle screw turns required for LP gas conversion.
Provides guidance on correcting misadjusted throttle screws for optimal performance.
Lists approximate throttle screw turns for natural gas and LP gas conversions.
Lists checks for field wiring and control parameters to ensure proper setup.
A checklist of control parameters that require verification and potential adjustment during startup.
Explains the fundamental operation of the boiler and its key features.
Describes how the boiler responds to different demand inputs and the function of outdoor reset.
Details pump operation and features for multi-boiler sequencing and EMS interface.
Explains how to use the archives feature and transfer data via USB.
Covers how the boiler regulates supply water temperature based on demand priorities.
Outlines the built-in safety and protection features of the boiler.
Explains the boiler's response to various limits like high limit, flue temperature, and flow switches.
Describes how to check limit string status and the function of central heating frost protection.
Guides users on navigating the boiler's touch screen display interface.
Explains access to the main menu and the quick setup parameters for common adjustments.
Details the available setpoint parameters for system configuration.
Covers parameters related to hydronic systems, comfort settings, and response speed adjustments.
Provides a table detailing the boiler's sequence of operation for various states.
Illustrates the boiler's sequence of operation graphically.
Explains the elements displayed on the home screen and their meanings.
Describes the various status screens available for monitoring boiler operation and performance.
Details the Sequencer Master's status screen information.
Provides an overview of the boiler's current status, setpoints, and sensor readings.
Shows the demand status of central heat, DHW, and sequencer functions.
Provides an overview of all installed sensors represented as bar graphs.
Allows viewing and analyzing variable trends from sensors.
Provides a detailed breakdown of the information presented on the status screens.
Guides users on how to access and use the manual operation and tuning features.
Explains how to enter the parameter adjustment mode and the associated security measures.
Details how to adjust system parameters like outdoor sensor and calibration settings.
Covers installer password management and configuration of frost protection settings.
Explains modulation settings and how to configure the boiler type for different altitudes.
Illustrates how to decode the boiler model and type settings.
Details the settings for System, Boiler, and DHW pumps, including overrun and exercise functions.
Provides examples of pump parameter settings for single boiler setups without or with IWH.
Illustrates piping and parameter settings for multiple boilers with IWH (Boiler Piped).
Shows piping and parameter settings for multiple boilers with IWH (Primary Piped).
Provides examples of pump parameter settings for multi-boiler configurations.
Guides on how to enter contractor, service company, and sales representative contact information.
Details parameters for adjusting central heat setpoint, response speed, and modulation.
Covers parameters for adjusting domestic hot water setpoint, response speed, and modulation.
Explains DHW modulation sensor selection and the outdoor reset curve configuration.
Details parameters for configuring outdoor reset, including temperature limits and boost time.
Covers configuration options for the Sequencer Master boiler, including IWH and boiler start delays.
Outlines settings for Sequencer Slave boilers, including address and selection order.
Details adjustable limit settings for modulation, supply, and stack temperatures.
Explains how to tune parameters like response speed, proportional rate, and integral rate for central heat.
Covers tuning parameters for domestic hot water control and lead/lag sequencing.
Details settings for fan speed control, ramps, gains, and slow start functions.
Guides on saving and loading boiler parameters using a USB thumb drive.
Lists requirements for USB drives and a summary of transferable parameters.
Provides steps for setting up a multi-boiler control sequencer system.
Explains the features and roles of the Sequencer Master and Slave boilers.
Illustrates the sequence of operation for multi-boiler systems under various load conditions.
Discusses boiler modulation strategies and how multiple demands are managed.
Covers backup sensor functionality and features enhancing operational availability.
Details the setup process for interfacing the boiler with an Energy Management System.
Explains how to configure remote demand signals for boiler control.
Outlines the parameters for configuring Modbus communication between the boiler and an EMS.
Provides a list of Modbus registers for controlling and setting boiler parameters.
Continues the list of Modbus registers related to boiler setpoints.
Lists Modbus registers for temperature sensors and burner control states.
Details Modbus registers related to lockout and hold codes for troubleshooting.
Lists Modbus registers for monitoring the status of various pumps.
Provides a reference guide for understanding pump status codes.
Highlights safety precautions when handling components containing refractory ceramic fibers.
Details necessary precautions and first aid measures for RCF exposure.
Lists critical safety warnings that must be followed during boiler service and maintenance.
Emphasizes tasks required for warranty compliance and continuous maintenance.
Outlines monthly and annual inspection tasks to ensure safe and efficient operation.
Guides on servicing the igniter, flame sensor, and burner assembly, including cleaning and inspection.
Details inspection procedures for the heat exchanger and condensate trap.
Covers inspection of vent connections, terminals, and air intake for obstructions.
Provides instructions for removing and replacing the condensate overflow switch and trap.
Guides on reinstalling the condensate trap and accessing the control compartment.
Explains how to use the help menu to navigate and identify fault causes.
Provides solutions for common issues where the help icon is not flashing.
Details soft lockout codes, their conditions, possible causes, and corrective actions.
Explains hard lockout codes, their conditions, possible causes, and corrective actions.
Describes how to view the status of individual safety limit contacts.
Guides on monitoring sensor status and diagnosing sensor faults.
Provides help for diagnosing sensor faults and resistance values for temperature sensors.
Lists resistance values for outdoor, header, supply, flue, and return sensors at various temperatures.
Explains additional icons that may appear in the help menu and their possible causes.
Covers accessing and reviewing historical boiler operating data, including sensor history and trends.
Explains how to view and interpret the stored lockout history.
Details how to view cycle/run time history and access the alarm log.
Guides on how to save historical data and alarms to a USB drive for analysis.
Shows examples of trend and alarm data files saved to a USB drive.
Provides a table defining the different boiler states logged in the system.
Information on how to obtain replacement parts and contact customer service.
Lists replacement parts for the heat exchanger and burner assemblies.
Lists replacement parts for the blower and gas train components.
Continues the list of replacement parts for blower and gas train components.
Lists replacement parts for the condensate trap and related components.
Lists replacement parts for the boiler's control system, including PCBs and fuses.
Lists replacement parts for the boiler's jacket, panels, and trim.
Lists additional components and kits such as pressure switches and sensors.
Lists part numbers for various wiring harnesses used in the boiler.
Guides on setting the correct boiler type and altitude range for proper operation at high altitudes.
Provides specific startup procedures for natural gas or LP fuel at high altitudes.
Lists approximate throttle screw turns required for LP gas conversion.
Provides altitude adjustment data, including recommended CO2 ranges and derate percentages.
Details the warranty coverage for heat exchangers and other parts/accessories.
Outlines the one-year limited warranty for commercial grade boilers and supplied parts.
Specifies the warranty terms and conditions for the heat exchanger, including claims procedures.
Lists general terms and conditions applicable to all warranties, including installation and usage requirements.
