Lochinvar 402 - 2072 operation manual Maintenance

Page 72

Installation & Operation Manual

9 Maintenance

￿WARNING

￿WARNING

￿WARNING

Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the appliance. Failure to perform the service and maintenance could result in damage to the appliance or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.

The appliance should be inspected annually only by a qualified service technician. In addition, the maintenance and care of the appliance designated in Table 9A and explained on the following pages must be performed to assure maximum appliance efficiency and reliability. Failure to service and maintain the appliance and system could result in equipment failure.

Electrical shock hazard – Turn off power to the appliance before any service operation on the appliance except as noted otherwise in this instruction manual. Failure to turn off electrical power could result in electrical shock, causing severe personal injury or death.

Address reported problems

1.Inspect any problems reported by the owner and correct before proceeding.

Inspect appliance area

1.Verify that appliance area is free of any combustible materials, gasoline and other flammable vapors and liquids.

Inspect appliance interior

1.Remove the outer access panels and inspect the interior of the appliance.

2.Vacuum any sediment from inside the appliance and components. Remove any obstructions.

Check all piping for leaks

Check water system

1.Verify all system components are correctly installed and operational.

2.Check the cold fill pressure for the system. Verify it is correct (must be a minimum of 12 PSI).

3.Watch the system pressure as the boiler heats up (during testing) to ensure pressure does not rise too high. Excessive pressure rise indicates expansion tank sizing or performance problem.

4.Inspect automatic air vents and air separators. Remove air vent caps and briefly press push valve to flush vent. Replace caps. Make sure vents do not leak. Replace any leaking vents.

￿WARNING

Eliminate all system or appliance leaks. Continual fresh makeup water will reduce appliance life. Minerals can build up in sections, reducing heat transfer, overheating heat exchanger, and causing heat exchanger failure. Leaking water may also cause severe property damage.

Check expansion tank

1. Expansion tanks provide space for water to move in and

out as the heating system water expands due to temperature

increase or contracts as the water cools. Tanks may be open,

closed, diaphragm or bladder type. See Section 4 - Water

Connections of the Copper-fin II Installation and Operation

Manual for suggested best location of expansion tanks and

1.Inspect all water and gas piping and verify to be leak free.

2.Look for signs of leaking lines and correct any problems found.

3.Check gas line using the procedure found in Section 3 - Gas Connections of the Copper-fin II Installation and Operation Manual.

air eliminators.

Flue vent system and air piping

1.Check for gastight seal at every connection, seam of air piping, and vent piping periodically inspected by a qualified service agency.

￿WARNING

Venting system must be sealed gastight to prevent flue gas spillage and carbon monoxide emissions, which will result in severe personal injury or death.

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Contents Models 402 Save this manual for future referenceContents Please read before proceeding Special instructionsRemoval of Combustion Chamber Lining or Base Panels Safety information Owner warningCopper-fin II How it works Copper-fin II How it works Copper-fin II How it works Ratings Copper-fin =B=R RatingDetermine unit location Location of unitIndoor clearances from combustible construction Freeze protectionOutdoor boiler installation LocationHydronic systems anti-freeze Combustion and ventilation airOutside Combustion Air Using Direct Venting Minimum Recommended Combustion AIR Supply to Equipment RoomExhaust fans Combustion air filterVenting Identify your appliance’s vent systemCAT IV Flue pipe materials CAT I Negative pressure non-condensingDirect Vent see General information Venting supportBarometric damper location Conventional negative draft venting see Negative draftFlue outlet piping Common Venting SystemsMasonry chimney installations Vertical vent termination clearances and locationInspection of a masonry chimney 1Vent Termination from Peaked Roof 10 ft. or Less From Ridge Vertical DirectAire venting see Combustion air inlet pipingLength of air inlet pipe Sidewall air inletVertical Rooftop Air Inlet Combined air inlet pointsClearances Venting of flue products Directaire Kits Model Horizontal KIT Vertical KITSidewall venting see Sidewall with fanSidewall venting termination Sidewall vent termination clearances and locationDrain tee installation Sidewall venting without fanModels 402 Horizontal DirectAire venting Powered Venting see Venting of flue productsDirect venting see Flue outlet pipingVertical DV venting termination Masonry chimney installation Horizontal DV venting terminationHorizontal Vent Termination Clearances and Location Combustion air inlet pipingConnecting the air inlet pipe to the unit Air inlet piping materialsLength of air inlet pipe Sealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipeMultiple sidewall direct vent installations Vertical and sidewall combustion air inletHorizontal combustion air inlet clearances Vertical Combustion Air Inlet ClearancesOutdoor installation see Outdoor vent/air inlet locationOutdoor vent cap kit Connecting to gas supply Gas connectionsGas pressure test Gas connectionCombination gas valves Gas train and controlsVenting of combination gas valves GAS Piping Size Chart Checking gas supply pressureWater flow switch Water connectionsInlet and outlet connections Heat exchangerHeating boiler installations Relief valvePiping of the boiler system Water connections heating boilers onlyMinimum boiler water temperatures Low Temperature Return Water SystemsLow temperature bypass requirements LTV Valve Kits Model LTV Valve KITLow system water volume Three way valves in systemRadiant floor and snow melt heating systems Maximum Flow for Heating BoilerTemperature / pressure gauge Typical heating boiler installationsInstallation with a chilled water system DHW installationGPM Diameter4Primary/Secondary Piping of Multiple Boilers Floor Drain Heating Supply Loop 6Primary/Secondary Piping with Buffer Tank Installation must comply with Electrical connectionsBoiler operating control module AMP Draw DataLine voltage connections EMS or remote thermostat connectionLow voltage connections DHW Domestic Hot Water thermostatLouver proving switch Alarm contactsLouver relay System supply sensor recommended useWiring of the cascade 4Low Voltage Field Wiring ConnectionsStart-up Check thermostat circuits Check vent and air pipingPlacing the boiler in operation Start the boiler1Lighting Instructions Configuration of the cascade Set DHW operationSet clock Operating information GeneralHow the appliance operates How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation, if used boilers onlyCascade DHW, Night Setback, and Ramp Delay operation with cascade DAY Switching on SequenceSequence of the cascade Sequence of operation Operation DisplayMENU/EXIT Display Screen ENTER/RESET Updown Copper-fin II control moduleAccess modes InstallerUser To save parameters and exit programmingStatus display screens Inlet ***F Inlet OpenInlet Shorted Syssup ***FUnit Pump Delay DHW Pump DelaySTG Demand FAN SpeedOperation of the cascade MIX VAL POS ** %Temperature Rise AT Full Rate Fire 90 GPM Flow Model Temperature Rise FDomestic water heaters Maximum Water FlowWater chemistry 1Typical Water Heater Piping with Storage Tank 2Single Water Heater Piping with Two Storage Tanks 3Multiple Water Heater Piping with a Single Storage Tank 4Multiple Water Heater Piping with Multiple Storage Tanks Pump operation Heat exchangerMinimum Pump Performance Ft. HdThermostat adjustment procedure Minimum water temperatures domestic hot water useDomestic water temperatures Optional relief valve Thermal expansionCathodic protection Location of Cold Water Supply Piping ConnectionsMaintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check all wiring Check control settingsCheck relief valve Inspect/replace hot surface igniter Ignition system checkoutInspect and clean burner Perform start-up and checksCheck burner flame Check flue gas passagewaysInspect and clean the heat exchanger Review with ownerOiled bearing circulators Connection diagram Digital HarnessSplay Diagram LadderFlow Switch
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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.
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