Lochinvar 402 - 2072 operation manual Contents

Page 2

Contents

HAZARD DEFINITIONS

2

PLEASE READ BEFORE PROCEEDING

3

SAFETY INFORMATION

4

THE COPPER-FIN II -- HOW IT WORKS

5-7

RATINGS

8

1. DETERMINE UNIT LOCATION

 

Location of Unit

9

Recommended Service Clearances

9

Non-Combustible / Combustible Flooring

10

Combustion Air Options

10-13

2. VENTING

 

Before You Begin

13

Vent System Options

14

General Venting Information

15

Conventional Negative Draft Venting

16-18

Vertical DirectAire Venting

19-21

Sidewall Venting

22-24

Horizontal DirectAire Venting

25

Direct Venting

26-29

Outdoor Installation

30

3. GAS CONNECTIONS

 

Connecting to Gas Supply

31

Gas Pressure Test

31

Checking Manifold Gas Pressure

31

Combination Gas Valves

32

Checking Gas Supply Pressure

33

4. WATER CONNECTIONS

 

Inlet & Outlet Connections

34

Relief Valve

35

Heating Boiler Installations

35-36

Low Temperature Return Water Systems

36

Low Temperature Bypass Requirements

36

Three Way Valves in System

37

Radiant Floor and Snow Melt Heating Systems

37

Typical Heating Boiler Installations

38

Installation with a Chilled Water System

38

Primary/Secondary Piping of a Single Boiler

39

Primary/Secondary Piping of Multiple Boilers

40

Boiler w/Low Temperature Bypass Piping

41

Primary/Secondary Piping with Buffer Tank

42

5. ELECTRICAL CONNECTIONS

 

 

Boiler Operating Control Module

43

Line Voltage Connections

44

Low Voltage Connections

44

Wiring of the Cascade

45

Low Voltage Field Wiring Connections

46

6. STARTUP

 

 

Check/Control Water Chemistry

47

Freeze Protection (when used)

47

Fill and Test Water System

47

Purge Air from Water System

47

Check for Gas Leaks

47

Check Thermostat Circuit(s)

48

Check Vent and Air Piping

48

Placing the Boiler in Operation

48

Start the Boiler

48

If Boiler Does Not Start Correctly

48

Set Space heating Operation (boiler only)

48

Operating Instructions

49

Set DHW Operation

50

7. OPERATING INFORMATION

 

 

General

51-53

Cascade

53-54

Sequence of Operation

55-56

Copper-fin II Control Module

56

Access Modes

57

Saving Parameters

57

Status Display Screens

58-61

8. DOMESTIC WATER HEATERS

 

 

Initial Setup of Maximum Water Flow

62

Water Chemistry

63

Typical Water Heater Piping w/Storage Tank(s)

64-65

Multiple Water Heater Piping w/Storage Tank(s)

........

66-67

Pump Operation

68

Minimum Water Temperatures (domestic hot water)

69

9. MAINTENANCE

71-75

10. CONNECTION DIAGRAM

76-77

11. LADDER DIAGRAM

78-79

Revision Notes

Back Cover

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.

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Contents Models 402 Save this manual for future referenceContents Removal of Combustion Chamber Lining or Base Panels Please read before proceedingSpecial instructions 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 RatingIndoor clearances from combustible construction Determine unit locationLocation of unit Freeze protectionHydronic systems anti-freeze Outdoor boiler installationLocation Combustion and ventilation airOutside Combustion Air Using Direct Venting Minimum Recommended Combustion AIR Supply to Equipment RoomExhaust fans Combustion air filterCAT IV Flue pipe materials VentingIdentify your appliance’s vent system CAT I Negative pressure non-condensingDirect Vent see Barometric damper location General informationVenting support Flue outlet piping Conventional negative draft venting seeNegative draft Common Venting SystemsInspection of a masonry chimney Masonry chimney installationsVertical vent termination clearances and location 1Vent Termination from Peaked Roof 10 ft. or Less From Ridge Length of air inlet pipe Vertical DirectAire venting seeCombustion air inlet piping Sidewall air inletClearances Vertical Rooftop Air InletCombined air inlet points Venting of flue products Directaire Kits Model Horizontal KIT Vertical KITSidewall venting termination Sidewall venting seeSidewall with fan Sidewall vent termination clearances and locationDrain tee installation Sidewall venting without fanModels 402 Horizontal DirectAire venting Powered Venting see Venting of flue productsVertical DV venting termination Direct venting seeFlue outlet piping Horizontal Vent Termination Clearances and Location Masonry chimney installationHorizontal DV venting termination Combustion air inlet pipingLength of air inlet pipe Connecting the air inlet pipe to the unitAir inlet piping materials Sealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipeHorizontal combustion air inlet clearances Multiple sidewall direct vent installationsVertical and sidewall combustion air inlet Vertical Combustion Air Inlet ClearancesOutdoor vent cap kit Outdoor installation seeOutdoor vent/air inlet location Gas pressure test Connecting to gas supplyGas connections Gas connectionVenting of combination gas valves Combination gas valvesGas train and controls GAS Piping Size Chart Checking gas supply pressureInlet and outlet connections Water flow switchWater connections Heat exchangerPiping of the boiler system Heating boiler installationsRelief valve Water connections heating boilers onlyLow temperature bypass requirements Minimum boiler water temperaturesLow Temperature Return Water Systems LTV Valve Kits Model LTV Valve KITRadiant floor and snow melt heating systems Low system water volumeThree way valves in system Maximum Flow for Heating BoilerInstallation with a chilled water system Temperature / pressure gaugeTypical heating boiler installations DHW installationGPM Diameter4Primary/Secondary Piping of Multiple Boilers Floor Drain Heating Supply Loop 6Primary/Secondary Piping with Buffer Tank Boiler operating control module Installation must comply withElectrical connections AMP Draw DataLow voltage connections Line voltage connectionsEMS or remote thermostat connection DHW Domestic Hot Water thermostatLouver relay Louver proving switchAlarm contacts System supply sensor recommended useWiring of the cascade 4Low Voltage Field Wiring ConnectionsStart-up Placing the boiler in operation Check thermostat circuitsCheck vent and air piping Start the boiler1Lighting Instructions Set clock Configuration of the cascadeSet DHW operation How the appliance operates Operating informationGeneral How the control module operatesTemperature control Protection featuresCascade Boiler temperature regulationOutdoor reset operation, if used boilers only Sequence of the cascade DHW, Night Setback, and Ramp Delay operation with cascadeDAY Switching on Sequence Sequence of operation Operation DisplayMENU/EXIT Display Screen ENTER/RESET Updown Copper-fin II control moduleUser Access modesInstaller To save parameters and exit programmingStatus display screens Inlet Shorted Inlet ***FInlet Open Syssup ***FSTG Demand Unit Pump DelayDHW Pump Delay FAN SpeedOperation of the cascade MIX VAL POS ** %Domestic water heaters Temperature Rise AT Full Rate Fire 90 GPM FlowModel Temperature Rise F 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 Minimum Pump Performance Pump operationHeat exchanger Ft. HdDomestic water temperatures Thermostat adjustment procedureMinimum water temperatures domestic hot water use Cathodic protection Optional relief valveThermal expansion Location of Cold Water Supply Piping ConnectionsOwner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check relief valve Inspect/replace hot surface igniter Check all wiringCheck control settings Ignition system checkoutCheck burner flame Inspect and clean burnerPerform start-up and checks Check flue gas passagewaysOiled bearing circulators Inspect and clean the heat exchangerReview with owner 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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