Lochinvar 402 - 2072, 502 - 2072 service manual Contents

Page 2

Contents

CONTENTS

2

2. MAINTENANCE

 

 

Hazard Definitions

2

Maintenance and Annual Startup

23-30

PLEASE READ BEFORE PROCEEDING

3

3. TROUBLESHOOTING

 

 

Handling Ceramic Fiber Materials

3

Before Troubleshooting

31

When servicing appliance

3

Check Control Module Fuses

31

Appliance operation

3

Table 3A - Troubleshooting Chart - No Display

32

Appliance water

3

Checking Temperature Sensors

33

WHAT IS IN THIS MANUAL

4

Table 3D - Troubleshooting Chart - Noisy System

34

1. SERVICE

 

Table 3E - Troubleshooting Chart - Fault Messages..

35-42

The Copper-fin Display

5

Revision Notes

Back Cover

Control Inputs

6

 

 

 

Control Outputs

7

 

 

 

General Operation

8

 

 

 

Sequence of Operation

9-10

 

 

 

Display Panel Menu Access

11

 

 

 

Display Panel Parameter Access

12

 

 

 

Parameter Table

13-14

 

 

 

Viewable and Changeable Control Parameters

15-22

 

 

 

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

￿DANGER

￿WARNING

￿CAUTION

CAUTION

NOTICE

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

2

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Contents Copper-fin II/IIE Boiler, Water Heater Pool Heater Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials Maintenance What is in this manual?Service TroubleshootingService Copper-fin displayControl inputs Control outputs How the control module operates General OperationHow the appliance operates Sequence of operationSequence of operation OUT 123.8F129HTR Postpurge Display panel menu access Display panel parameter access Datalogging Functions Settingsdhw Resetoutdoor Parameter tableAnti-cycle Delay Yes Temperature settings boiler only Viewable and changeable control parametersData logging FunctionsDHW settings Outdoor air reset boiler only Anti-cycling Control modes Building Management System BMS CascadeService Notification Circulation pumpsOwner maintenance Maintenance Maintenance and annual startupService technician See the User’s Information Manual for instructionsMaintenance Check relief valve Inspect/replace hot surface igniter Inspect/replace hot surface ignitersInspect and clean burner Check all wiringCheck control settings Perform start-up and checksAccess to the burner will require the following steps Checking combustion air pressureAdjusting combustion air pressure Checking manifold gas pressureValve Fitting Control Knob Oiled bearing circulators Inspect and clean the heat exchangerReview with owner Check control module fuses TroubleshootingBefore troubleshooting Check the followingOperation No DisplayNo Burner Unit Does NotTemperature Resistance Checking temperature sensorsResistance Temperature Boiler Pump System Pump NoisyNo Pump DHW PumpAnti-cycling Flow SwitchFlame Sequence HSI Current Low ErrorNo Flame Ign Flame CKTRunning Auto ResetNo Flame High LimitSensor Open Manual ResetInlet Low Sensor ShortedAPS Open Louver ProvingTank Open APS ClosedTemp O/Shoot Rem Ctrl FltProgr Service BlkParameters Low VoltageWrite EEProm Watch Dog ErrorNo Error Stored Program EEProm
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502 - 2072, 402 - 2072 specifications

The Lochinvar 402 - 2072 is a versatile and highly efficient boiler designed to meet the heating demands of modern residential and commercial applications. This model stands out due to its innovative technologies, advanced features, and a high level of reliability, making it an ideal choice for consumers looking for an enduring and economical heating solution.

One of the primary characteristics of the Lochinvar 402 - 2072 is its impressive energy efficiency. With an exceptional annual fuel utilization efficiency (AFUE) rating, this boiler ensures minimal energy waste, allowing homeowners and business operators to save significantly on their energy bills. The model incorporates advanced condensing technology that enables it to extract heat from the combustion gases, maximizing heat transfer and reducing emissions.

The Lochinvar 402 - 2072 is built with a robust stainless steel construction that enhances durability and resilience against corrosion and other environmental factors. This material not only prolongs the lifespan of the unit but also contributes to its outstanding thermal efficiency. Additionally, the boiler's compact design allows for flexible installation options, making it suitable for various spaces, including tight utility rooms and basements.

Equipped with a user-friendly control interface, the Lochinvar 402 - 2072 allows for easy monitoring and adjustment of settings. Its advanced digital display provides real-time data on system performance, ensuring the operator can maintain optimal performance and efficiency.

Another noteworthy feature is the unit's quiet operation. The design includes sound-dampening insulation and high-efficiency circulators, keeping noise to a minimum, which is an essential trait for both residential and commercial settings.

The Lochinvar 402 - 2072 is also designed with safety in mind. It incorporates multiple safety features including an automated vent damper, low water cutoff, and a comprehensive control system that monitors various operating conditions. This proactive approach to safety ensures that potential issues are identified and addressed before they become critical.

In conclusion, the Lochinvar 402 - 2072 boiler presents an exceptional combination of efficiency, durability, and user-friendly features. Its advanced condensing technology, stainless steel construction, and focus on safety make it a leading choice in the competitive boiler market, catering to the heating needs of a diverse range of applications while ensuring environmental responsibility. For those in search of a dependable and efficient heating solution, the Lochinvar 402 - 2072 is certainly worth considering.