Lochinvar 2072, 402 service manual What is in this manual?, Service, Maintenance, Troubleshooting

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Copper-fin II/IIE Boiler and Water Heater Service Manual

What is in this manual?

Service

The Copper-fin display

• Display panel readout, buttons and their functions

Control module inputs

• Control module inputs and options

Control module outputs

• Control module outputs and options

General

How the appliance operates

How the control module operates

Access modes -- user and installer

Sequence of operation -- Domestic Hot Water (DHW)/space heating

Control panel menu access

Accessing programming mode and locating menus

(See separate guides covering the ModBus and PC interfaces)

Maintenance

Service and maintenance schedules

Address reported problems

Inspect appliance area and appliance interior

Check all piping for leaks

Flue vent system and air piping

Combustion air filter

Check water system

Check expansion tank

Check relief valve

Check igniter

Check all appliance wiring

Flame inspection

Check flue gas passageways

Inspect and clean burner

Checking combustion air pressure

Checking manifold gas pressure

Cleaning heat exchanger

Review with owner

Control panel parameter access

• Accessing and changing parameters from the display panel

Quick start information -- parameter tables

An index of available adjustments and readouts, where to access them and where to find detailed information.

Copper-fin boiler operation (pages 13 - 14)

A: General

B: Temperature Settings

C: Data Logging

D: Functions

E: DHW Settings

F: Outdoor Air Reset

G: Anti-cycling

H: Control Modes

I: Cascade

J: Building Management System (BMS)

K: Pumps

L: Service Notification

Copper-fin water heater operation (pages

15 - 16)

A: General

B: Temperature Settings

C: Data Logging

D: Functions

E: DHW Settings

F: Anti-cycling

G: Control Modes

H: Cascade

I: Building Management System (BMS)

J: Pumps

K: Service Notification

Troubleshooting

Troubleshooting table - No display

Checking temperature sensors

Troubleshooting table - Noisy system

Troubleshooting table - Fault messages displayed on Operator Interface

4

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Contents Copper-fin II/IIE Boiler and Water Heater Models 402 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid What is in this manual? ServiceMaintenance TroubleshootingService Copper-fin displayControl inputs Control outputs General Operation How the appliance operatesHow the control module operates Sequence of operationSequence of operation OUT 123.8F129HTR Postpurge Display panel menu access Display panel parameter access Parameter table a Boiler Operation OnlyAnti-cycle Time Anti Cycl Tm Parameter table B Water Heater Operation BMS Service Notification Pumps Temperature settings Viewable and changeable control parametersData logging FunctionsDHW settings Outdoor air reset boiler only Anti-cycling Control modes Building Management System BMS CascadeService Notification Circulation pumpsMaintenance Maintenance and annual startup Service technicianOwner maintenance See the User’s Information Manual for instructionsMaintenance Inspect/replace hot surface igniters Check relief valveInspect/replace hot surface igniter Check all wiring Check control settingsInspect and clean burner Perform start-up and checks2Adjusting air shutter 399,999 750,000 Btu/ hr Models Adjusting combustion air pressure Checking manifold gas pressurePressure Regulator Chamber Adjustment Manifold Review with owner Inspect and clean the heat exchangerOiled bearing circulators Troubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit DoesResistance Temperature Checking temperature sensorsTemperature Resistance Noisy No PumpOperation Boiler Pump System Pump DHW PumpFlame Sequence Flow SwitchAnti-cycling Error No Flame IgnHSI Current Low Flame CKTAuto Reset No FlameRunning High LimitManual Reset Inlet LowSensor Open Sensor ShortedLouver Proving Tank OpenAPS Open APS ClosedRem Ctrl Flt Temp O/ShootParameters Progr Service Blk Watch Dog ErrorNo Error Stored Low Voltage
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402, 2072 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.