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General| Model | MVB 2004A |
|---|---|
| Type | Boiler |
| Efficiency | 80% |
| Fuel Type | Natural Gas |
| Water Connection Size | 2" NPT |
| Input BTU/h | 200, 000 BTU/h |
| Input BTU | 200, 000 BTU/h |
Defines hazard levels (Danger, Warning, Caution, Note) for safety.
Lists critical safety precautions for operation and installation.
Instructions for checking the heater upon receipt and reporting damage.
Explains model identification, ratings, and certifications.
Guidance on installations at altitudes above 2,000 ft.
Figures showing the location of key internal components.
Provides basic data like MBTUH input, connections, and vent size.
Explains the risk of severe burns from hot water and recommended settings.
Details how water temperature relates to scald injury time.
Lists codes and standards that must be followed for installation.
Requirements for the mounting surface and location of the heater.
Specifies minimum clearances for indoor installations.
Specifies minimum clearances for outdoor installations.
Requirements for supplying combustion and ventilation air.
Clearances for vent/air inlet terminations per codes.
Locating heater, circulation requirements, and relief valve piping safety.
Precautions for cold inlet water to prevent condensation and damage.
Guidance on selecting pumps and installing feedwater regulators.
General piping considerations and expansion tank requirements.
Overview of operating modes for hydronic heating systems.
Considerations for water hardness and piping in DHW applications.
Specific requirements for pool heating, pumps, and water chemistry.
Recommended water chemistry levels for pools and spas.
Instructions for connecting gas supply and pressure testing safety.
Requirements for upstream gas pressure and regulator installation.
Codes and guidelines for electrical power connections.
Instructions for field wiring, controllers, and making connections.
Importance of proper venting and classification of appliance categories.
Precautions for vent terminal location, support, and clearances.
Vent termination requirements according to U.S. and Canadian codes.
Guidelines for vertical and common venting systems installation.
Guidelines for installing horizontal through-the-wall direct venting systems.
Guidelines for installing direct vent vertical systems.
Requirements for terminating direct vent vertical systems.
Important precautions when locating and installing heaters outdoors.
How to enable freeze protection and pump operation.
Explanation of ignition module operation and lockout reset.
Description of fixed and optional manual reset high limits.
Information on optional auto-reset high limit and flow switch function.
Function of optional low water cut-off and gas pressure switches.
Function and location of the blocked vent pressure switch.
Overview of user interface and how to adjust the setpoint.
Details various settings and their default values in the Adjust menu.
Lists parameters and descriptions found in the Boiler Menu.
Lists parameters and descriptions found in the Monitor Menu.
Describes functions like error lookup, user tests, and defaults.
Explains how outdoor temperature affects setpoint and heating water temp.
Details how reset ratio is calculated and adjusted for heat loss.
Explains the main wiring diagram and its components.
Steps before initial start-up: filling, purging, and inspections.
Required tools and initial start-up procedure.
Verifying power supply and checking gas supply pressure.
Procedures for checking blower suction, CO2, and manifold pressure.
Checks for thermostats, high limits, flow switches, and pressure settings.
Detailed procedure for leak testing the dual-seat gas valve.
Final checks after start-up, including safety controls and thermostat cycling.
Step-by-step guide for lighting the heater and initial checks.
Procedures for safely shutting off gas to the appliance.
How error codes are displayed and general troubleshooting approach.
Information on faults, error display, and troubleshooting steps.
Explains LED error codes on the PIM™ and their troubleshooting.
Outlines daily, monthly, yearly, weekly, and semi-annual maintenance tasks.
Step-by-step instructions for replacing and maintaining the air filter.
Discusses how contaminants affect condensate and heater materials.
Specific MA rules for CO detectors, signage, and exemptions.
MA requirements for gas pressure switches and regulators.
Defines what the warranty covers, excludes, and heat exchanger periods.
Steps for initiating a warranty claim and contact information.
States warranty limitations, liability, and owner's legal rights.
