Lochinvar 402 - 2072 operation manual Direct Vent see

Page 14

Installation & Operation Manual

2 Venting

Vent system options: (Note: Installations shown below are representative, actual installations may vary from those shown.)

A

This option uses a vertical rooftop flue termination

D

This option uses a powered vent assembly to

with air supplied from the equipment room - see

exhaust the flue products out a sidewall with air

page 16.

supplied by a pipe from the sidewall - see page 25.

CONVENTIONAL NEGATIVE

HORIZONTAL DIRECTAIRE

VENTING

 

DRAFT VENTING

 

 

 

 

 

 

NOTE: CAT I B-VENT MATERIALS MAY BE USED WHEN THE

 

 

 

POWERED VENT IS CONNECTED DIRECTLY TO THE OUTSIDE

 

 

 

VENT CAP. IF THE POWERED VENT IS NOT CONNECTED

 

 

 

DIRECTLY TO THE OUTSIDE VENT CAP, THEN CAT IV - AL29-4C

 

 

 

VENT MATERIALS MUST BE USED FROM THE POWERED VENT

 

 

 

TO THE OUTSIDE VENT CAP.

3'

MIN

12"

MIN

B

This option uses a vertical conventional vent for

E

This option uses a sealed AL29-4C flue and a

flue products with air supplied by a pipe from the

separate combustion air pipe to the outdoors.

sidewall or rooftop - see page 19.

This system terminates both the flue and

 

 

 

combustion air inlet in the same pressure zone

VERTICAL DIRECTAIRE VENTING

DIRECT VENT - see page 26.

 

 

 

 

3'

 

 

 

 

 

MIN

 

 

 

 

 

12"

 

 

 

 

 

MIN

 

C

This

option uses a powered vent

assembly

F

This option uses the installation of a special air

to exhaust the flue products out a sidewall

inlet / vent cap on top of the unit - see page 30.

vent

termination with air supplied

from the

 

 

equipment room - see page 22.

 

 

 

SIDEWALL VENTING

 

 

OUTDOOR VENTING

 

 

 

 

NOTE: CAT I B-VENT MATERIALS MAY BE USED WHEN THE

POWERED VENT IS CONNECTED DIRECTLY TO THE OUTSIDE

VENT CAP. IF THE POWERED VENT IS NOT CONNECTED

DIRECTLY TO THE OUTSIDE VENT CAP, THEN CAT IV - AL29-4C

VENT MATERIALS MUST BE USED FROM THE POWERED VENT

TO THE OUTSIDE VENT CAP.

14

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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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